Search
Search results for
We found
284 results for you
-
Moral Developmental Scale in Iranian Culture
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Davood Manavipour --- Islamic Azad University, IranThe study explored the structure of Moral Developmental Scale in Iranian Islamic culture. Participants were 380 Data were analyzed using Principal component analysis and Confirmatory Factor Analysis. Principal component analysis resulted in four components with Eigen values >1, which together... -
Automatic Continuity of N-Homomorphisms between Banach Algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: TaherG. Honary --- , Iran H. Shayanpour --- , IranAn n-homomorphism between algebras is a linear map θ: A→B such that θ(a 1 a 2…an ) = θ(a1)θ(a2)…θ(an ) for all elements a 1,a 2…, an ∈ A. If A is a unital algebra it is known that every... -
An Algebraic Characterization of Blumberg Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Ahmadi Zand --- Department of Mathematics, IranLet X be a topological space and let C(X) be the ring of continuous real-valued functions on X. We study T′(X) as an over-ring of C(X), where T′(X) denotes the set of all real-valued functions on X such that for... -
σ-Contractible and σ-biprojective Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Taher Yazdanpanah --- Faculty of Mathematical Science, Iran Hashem Najafi --- Faculty of Mathematical Science, IranThe notion of σ-amenability for Banach algebras and its related notions were introduced and extensively studied by M.S. Moslehian and A.N. Motlagh in [10]. We develop these notions parallel to the amenability of Banach algebras introduced by B.E. Johnson in... -
Automatic continuity of n-homomorphisms between FrÉchet algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: TaherG. Honary --- Faculty of Mathematical Sciences and Computer, Iran M. Najafi Tavani --- Department of Mathematics, Islamshahr Branch, Iran H. Shayanpour --- Faculty of Mathematical Sciences and Computer, IranWe impose a condition on a commutative regular Fréchet algebra (A, (pm )) to ensure that A/kerpm is a Fréchet Q-algebra. This implies that if θ is an n-homomorphism on certain Fréchet algebras (A, (pm )) into semisimple commutative Fréchet... -
On the support of general local cohomology modules and filter regular sequences
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Cihad Abdioĝlu --- Department of Mathematics, Turkey Kazem Khashyarmanesh* --- Department of Pure Mathematics, Iran M. Tamer Koşan --- Department of Mathematics, TurkeyLet R be a commutative Noetherian ring with non-zero identity and a an ideal of R. In the present paper, we examine the question whether the support of H a n (N, M) must be closed in... -
Generalized composition and Volterra type operators between QK spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Mahyar --- Department of Mathematics, Iran Sh. Rezaei --- Department of Mathematic, Science and Research Branch, IranIn this paper, the boundedness and compactness of the generalized composition operators and the products of Volterra type operators a nd composition operators between QK spaces are investigated. We also give a necessary condition for multiplication operators between QK spaces to... -
Normed algebras of infinitely differentiable Lipschitz functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mortaza Abtahi --- School of Mathematics and Computer Science, IranLet X be a perfect compact plane set, ω ={w n } be a weight sequence of positive numbers, and 0 < α ≤ 1. Then Lip(X, α, ω) denotes the algebra of infinitely differentiable functions f on X... -
On the second conjugate of the weighted semigroup algebra for a locally compact semigroup
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Saeid Maghsoudi --- Department of Mathematics, Iran Rasoul Nasr-Isfahani --- Department of Mathematical Sciences, IranLet S be a topological semigroup, ω be a weight function on S, and M a (S, ω) be the weighted semigroup algebra of S. Let (S; M a (S, ω)) be the C *-algebra of all... -
Separating maps on Fréchet algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Najafi Tavani --- Department of Mathematics, Eslamshahr Branch, IranLet A be a normal Fréchet function algebra on a topological space X which is the projective limit of a sequence of certain Banach function algebras and satisfies Ditkin's condition. Let B be a function algebra on a topological space... -
On the prime graph of Dn(q) where q ∊ {2, 5}
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Z. Akhlaghi --- Dept. of Pure Math., Faculty of Math. and Computer Sci, Iran M. Khatami --- Department of Mathematics, Iran B. Khosravi --- Dept. of Pure Math., Faculty of Math. and Computer Sci, IranLet G be a finite group. The prime graph Γ(G) of G is defined as follows. The vertices of Γ(G) are the primes dividing the order of G and two distinct vertices p, p′ are joined by an edge if... -
More on operator Bellman inequality
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: F. Mirzapour --- Department of Mathematics, Faculty of Sciences, Iran A. Morassaei --- Department of Mathematics, Faculty of Sciences, Iran M.S. Moslehian --- Department of Pure Mathematics, Center of Excellence in Analysis on Algebraic Structures (CEAAS), IranWe present a Bellman inequality involving operator means for operators acting on a Hilbert space. We also give some Bellman inequalities concerning sesquilinear forms. Finally, we refine the Jensen's operator inequality and use it for obtaining a refinement of the... -
Analytical solution of the transpiration on the boundary layer flow and heat transfer over a vertical slender cylinder
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Abbasbandy --- Department of Mathematics, Iran D. Modarrespoor --- Mechanical Engineering Department, Iran K. Parand --- Department of Computer Sciences, Iran J.A. Rad --- Department of Computer Sciences, IranAn analysis is carried out to study the effects that blowing/injection and suction on the steady mixed convection or combined forced and free convection boundary layer flows over a vertical slender cylinder with a mainstream velocity and a wall surface... -
On convergence of homotopy analysis method and its application to fractional integro-differential equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Abbasbandy --- Department of Mathematics, Iran M.S. Hashemi --- Department of Mathematics and Computer Science, Engineering and Technical Faculty, Iran I. Hashim --- Centre for Modelling & Data Analysis, School of Mathematical Sciences, MalaysiaIn this paper, we have used the homotopy analysis method (HAM) to obtain approximate solution of fractional integro-differential equations (FIDEs). Convergence of HAM is considered for this kind of equations. Also some examples are given to illustrate the high efficiency... -
Invoking the feminine physical ideal: bitch-slapping, she-men and butch girls
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Kiran Pienaar Ian BekkerThis paper presents the results of research on the discursive construction of one aspect of gender identity: the female physical ideal. Applying Butler's (1993) theory of performativity to a real-life local context, it critically analyses how a group of young... -
The body as a site of struggle: oppositional discourses of the disciplined female body
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Kiran Pienaar Ian BekkerThis article presents the results of a study on the discursive construction of one aspect of gender identity, namely the female physical ideal. It reports on an analysis of the discourses of the disciplined female body, as these are drawn... -
Assessment of heavy metal accumulation in Anzali wetland, Iran, using a submerged aquatic plant, Ceratophyllum demersum
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Pourkhabbaz --- Department of Environmental Sciences, Faculty of Agriculture, Iran HR Pourkhabbaz --- Department of Environment, Faculty of Natural Resources, Iran T Khazaei --- Department of Environmental Sciences, Faculty of Agriculture, Iran S Behravesh --- Department of Environmental Sciences, Faculty of Agriculture, Iran M Ebrahimpour --- Department of Environmental Sciences, Faculty of Agriculture, IranThe objective of this study in 2009 was to examine whether levels of cadmium (Cd), copper (Cu), zinc (Zn), lead (Pb) and chromium (Cr) were higher in the leaves than in the stems of a submerged aquatic plant Ceratophyllum demersum... -
An experimental study on food and salinity preferences of two Brachionus plicatilis rotifer strains from Iran
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Malekzadeh Viayeh --- Artemia and Aquatic Animals Research Institute, Iran H Mohammadi --- Department of Fisheries, Faculty of Natural Resources, IranEffects of feeding on four algal species (Chlorella vulgaris, Nannochloropsis oculata, Isochrysis galbana and Scenedesmus obliques) at salinities of 5, 15 and 25 on the population growth parameters of two Iranian strains of the widespread rotifer species Brachionus plicatilis were... -
Home range and movement patterns of Sokoke Scops Owl Otus ireneae
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Munir Virani --- The Peregrine Fund (Kenya Project). Zoology Dept, UKVirani, M. 2000. Home range and movement patterns of Sokoke Scops Owl Otus ireneae. Ostrich 71 (1 & 2): 139–142. -
Disconcerting trends in populations of the endangered Sokoke Scops OwlOtus ireneae in the Arabuko-Sokoke Forest, Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: MunirZ Virani --- , USA Peter Njoroge --- Ornithology Section, Department of Zoology, Kenya Ian Gordon --- , Kenya -
Nesting status of African White-backed Vultures Gyps africanus in the Masai Mara National Reserve, Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Munir Virani --- , USA Paul Kirui --- , Kenya Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland Simon Thomsett --- Ornithology Section, Department of Zoology, Kenya Mwangi Githiru --- Ornithology Section, Department of Zoology, KenyaVulture populations have declined globally as well as regionally within Africa. Little is known about the status of the African White-backed Vulture Gyps africanus in Kenya, but ongoing studies indicate that its population has declined over the last two decades... -
Towards a Technology Policy for Renewable Energy Development in Africa: A Systems of Innovation Perspective
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ogundiran Soumonni --- Wits Business School, South AfricaThe objective of this paper is to use the systems of innovation (SI) perspective to describe how African countries might increase their rates of access to electricity, and by extension their capacity for broad-based industrialization, through renewable energy. The paper... -
Articulating the Construct of Organizational Innovativeness in Iranian SMEs
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mohammad Ali Shafia --- Department of Industrial Engineering, Iran Mammo Muchie --- DST/NRF Research Professor, South Africa Ali Reza Babakhan --- Department of Progress Engineering, IranThis paper investigates Small and Medium Sized Enterprises' (SMEs) innovative moves applied to their practical works. The different dimensions of the organizational innovation implication in Iranian SMEs at Qom province are explored. Based on the findings a model was developed... -
Proposing Organizational Self Sufficiency Theory
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mohammad Ali Shafia --- Department of Industrial Engineering, Iran Mammo Muchie --- DST/NRF Research Professor, South Africa Ali Reza Babakhan --- Department of Progress Engineering, IranIt is becoming increasingly difficult to ignore the positive impacts of advanced manufacturing technologies (AMTs) on organizational performance. Many firms from developing countries attempt to import AMTs from foreign suppliers in order to improve their products' qualities, reduce costs and... -
Factors influencing the breeding performance of the Augur Buzzard Buteo augur in southern Lake Naivasha, Rift Valley, Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: MunirZ Virani DavidM HarperThe breeding performance of the Augur Buzzard Buteo augur in 1995–1998 was compared between three different areas south of Lake Naivasha, Kenya. These were: (1) a national park (Hell's Gate), (2) an undisturbed Acacia woodland-pasture (Mundui) and (3) an intensively... -
Designs from the groups PSL2(q) for certain q
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Darafsheh --- School of Mathematics, College of Science, Iran A. Iranmanesh --- Department of Mathematics, Faculty of Basic Sciences, Iran R. Kahkeshani --- Department of Mathematics, Faculty of Basic Sciences, IranUsing primitive actions of the projective special linear groups PSL2(q), q = 37, 41, 43, 47 and 49 some 1-designs are constructed. The automorphism group of all the constructed designs are found. It is shown that all subgroups of the... -
Algebraic Entropy of Shift Endomorphisms on Abelian Groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maryam Akhavin --- Faculty of Mathematical Sciences, Iran Dikran Dikranjan --- Dipartimento di Matematica e Informatica, Italy Anna Giordano Bruno --- Dipartimento di Matematica e Informatica, Italy Arezoo Hosseini --- Department of Mathematics, Faculty of Science, Iran Fatemah Ayatollah Zadeh Shirazi --- Faculty of Mathematics, Statistics and Computer Science, College of Science, IranFor every finite-to-one map λ : Γ → Γ and for every abelian group K, the generalized shift σλ of the direct sum ⊕Γ K is the endomorphism defined by (x i ) iεΓ ↦ (x λ(i)) iεΓ [3]... -
'You are not alone': the discursive construction of the 'suffering victim' identity on The Oprah Winfrey Show
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Christine Marshall Kiran PienaarThe Oprah Winfrey Show is widely recognised as the leading television talk show worldwide (Garson, 2004) and its appeal lies in its exploration of issues which have universal currency, such as relationship problems, gender-based violence and stories of survival. The... -
A comparative study of the breeding behaviour of the Augur Buzzard, Buteo augur, in two different land-use
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: MunirZ Virani DavidM HarperA comparative study of the breeding behaviour of the Augur Buzzard Buteo augur was made in two contrasting areas on the southern side of Lake Naivasha, Kenya. Hell's Gate National Park represented a natural site, and the lake environs an... -
On the existence and approximation of fixed points for Ćirić type contractive mappings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: B. Djafari-Rouhani --- Department of Mathematical Sciences, USA Sirous Moradi --- Department of Mathematics, IranLet (X, d) be a complete convex metric space, and C be a nonempty, closed and convex subset of X. We consider Ćirić type contractive self-mappings T of C satisfying: for all x, y ∈ C, where 0 < a... -
A survey of metabolic syndrome in first-degree relatives (fathers) of patients with polycystic ovarian syndrome
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: M Akbarzadeh --- Academic Instructor, Iran F Moradi --- Midwife, University of Medical Sciences, Iran MH Dabbaghmanesh --- Department of Internal Medicine, Endocrine and Metabolism Research Center, Iran P Jafari --- Department of Biostatistics, Iran ME Parsanezhad --- Department of Obstetrics and Gynecology, IranObjectives: Women with polycystic ovarian syndrome (PCOS) are at twice the risk of developing metabolic syndrome, compared to women from the general population. The aim of this study was to assess the prevalence of metabolic syndrome in the first-degree relatives... -
Tension capnothorax during laparoscopic transhiatal oesophagectomy—A case report
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: R Bala --- Department of Anaesthesiology and Critical Care, India S Saini --- Department of Anaesthesiology and Critical Care, India JC Dureja --- Department of Anaesthesiology and Critical Care, India N Kad --- Department of Anaesthesiology and Critical Care, India A Thakur --- Department of Anaesthesiology and Critical Care, India S Kiran --- Department of Anaesthesiology and Critical Care, India S Prasad --- Department of Surgery, India R Karwasara --- Department of Surgery, IndiaMinimally invasive transhiatal oesophagectomy (THE) is a common operative procedure for carcinoma of the oesophagus. This technique has many advantages over other surgical approaches to oesophagectomy. Common complications associated with THE are pulmonary in nature and can lead to increased... -
Airway obstruction following mandibular surgery—a case report
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Ghai --- Department of Otorhinolaryngology* & Anaesthesiology, S Kiran --- Department of Otorhinolaryngology* & Anaesthesiology, R Wadbera --- Department of Otorhinolaryngology* & Anaesthesiology, K Kamal --- Department of Otorhinolaryngology* & Anaesthesiology, -
Evaluation of gabapentin in attenuating pressor response to direct laryngoscopy and tracheal intubation
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Kiran --- Department of Anaesthesiology and Critical Care, India D Verma --- Department of Anaesthesiology and Critical Care, IndiaBackground: To evaluate effect of gabapentin in attenuation of haemodynamic responses to direct laryngoscopy and tracheal intubation. -
Anaesthetic management of a patient with thoracopagus
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Kiran --- Department of Anaesthesiology and Critical Care, India KP Kaur --- Department of Anaesthesiology and Critical Care, India KNR Rattan --- Department of Paediatric Surgery, India SK Rattan --- Department of Paediatric Surgery, IndiaWe report the case of a 10-day-old male child weighing 3.5 kg, with mass over the sternal region, a set of four limbs and an omphalocoele that had undergone surgical separation. An exoparasitic twin had fully developed hind limbs, well-developed... -
Anaesthetic management of appendectomy in a patient with cerebral arteriovenous malformation
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: R Taneja --- Department of Anaesthesia, India S Kiran --- Department of Anaesthesia, IndiaBackground: The aim of anaesthetic management for appendectomy in a patient with cerebral arteriovenous malformation (AVM) is to maintain a stable cardiovascular system. As this condition is rare, there are no definitive guidelines regarding the anaesthetic management of such patients. -
Case study: An unusual cause of clotted blood in epidural catheter
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Kiran --- Department of Anaesthesia, Pandit Bhagwat Dayal Sharma, India R Taneja --- Department of Anaesthesia, Pandit Bhagwat Dayal Sharma, IndiaThe failure of an epidural catheter after initially functioning well may be due to kinking, knotting or epidural catheter lumen blockage. The presence of blood in the epidural catheter is usually due to the catheter's traumatic placement or to intravascular... -
Effectiveness of low-dose midazolam plus ketamine in the prevention of shivering during spinal anaesthesia for emergency lower limb surgery
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: K Misiran --- Department of Anaesthesiology and Intensive Care, Faculty of Medicine, Malaysia FZ Aziz --- Department of Anaesthesia and Intensive Care, MalaysiaObjective: This study was conducted to compare the effectiveness of two different dosages of intravenous midazolam in combination with ketamine in the prevention of shivering during spinal anaesthesia for emergency lower limb surgery. -
Improving the Rate of Peak Expiratory Flow Measurements (PEFR) in a General Practice
Item type: Journal Article • Journal: South African Family Practice • Authors: Indiran Govender --- , -
Burnout
Item type: Journal Article • Journal: South African Family Practice • Authors: Indiran Govender --- ,We welcome any brief comments on articles published In the Journal or other Information of Interest to readers. Letters selected for publication that comment on published articles will be forwarded to the original authors of those articles. Final approval of... -
Letters
Item type: Journal Article • Journal: South African Family Practice • Authors: Indiran Govender --- Stanger Hospital, Gina Joubert --- Free State University, -
An unusual complication with xylocaine spray in microlaryngeal surgery
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Ghai --- Department of Anaesthesiology and Critical Care, India R Wadhera --- Department of Otorhinolaryngology, India S Kiran --- Department of Anaesthesiology and Critical Care, India R Taneja --- Department of Anaesthesiology and Critical Care, India -
Schumpeterian Analysis of Economic Catch-up: Knowledge, Path-creation, and the Middle-income Trap
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ogundiran Soumonni --- Wits Business School, University of the Witwatersrand, South Africa -
The knowledge and beliefs of hypertensive patients attending Katleho District Hospital in Free State province, South Africa, about their illness
Item type: Journal Article • Journal: South African Family Practice • Authors: Justin Mpinda --- Katleho District Hospital, South Africa John Tumbo --- Department of Family Medicine and Primary Health Care, South Africa Indiran Govender --- Department of Family Medicine and Primary Health Care, South Africa Benjamin Mills --- Department of Family Medicine and Primary Health Care, South AfricaIntroduction: Hypertension is a common chronic condition. A sound understanding of people’s beliefs is required in this regard. Usually, poor compliance and decisions by patients to stop taking conventional treatment and to use complementary remedies and traditional remedies arise from... -
The effect of constructed-responses and multiple-choice tests on students’ course content mastery
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Lotfollah Karimi --- English Department, IranIn this article the effectiveness of open-ended tasks and multiple-choice item tests on students’ achievement in a linguistic course was investigated. To this end, a true-experimental research method with a randomised pre-test–post-test experimental group design was applied. The author had... -
Decline of Terebralia palustris in South African mangroves
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JL Raw --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa RH Taylor --- School of Hydrology, South Africa NAF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa N Peer --- DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaTerebralia palustris (Linnaeus, 1767), the giant mangrove whelk, is a prominent component of mangrove ecosystem malacofauna in the Indo-West-Pacific region. On the east coast of Africa, the range of T. palustris extends from Kenya to the south-eastern region of South... -
The multipliers related products in Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Javad Laali --- Department of Mathematical Sciences and Computer, IranFor a Banach algebra and a bounded multiplier T of , there is a new Banach algebra T, related to and T, that has the same underlying space as . We investigate the relationship between the Banach algebras and T... -
Development and Validation of an EFL Self-Regulated Learning Questionnaire
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mohammad Salehi --- Sharif University of Technology, Iran Hamid Jafari --- Sharif University of Technology, IranSelf-regulated learning, strangely enough, though having swept educational psychology's literature like a tidal wave and also, compared to other constructs such as metacognition and learning strategies, has remained rather uncharted in language education literature and L2 research. Hence, among the... -
Goldie dimension of rings of fractions of C(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Afrooz --- Department of Mathematics, Iran F. Azarpanah --- Department of Mathematics, Iran O.A.S. Karamzadeh --- Department of Mathematics, IranIt is observed that X is an F-space if and only if C(X) is locally a domain (i.e., C(X)P is a domain for each prime ideal P of C(X)). Consequently, X is an F-space if and only if the primary... -
A numerical scheme for solving differential equations with space and time-fractional coordinate derivatives
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yasir Khan --- Department of Mathematics, China S. Panjeh Ali Beik --- School of Mathematics, Iran Khosro Sayevand --- Department of Mathematical Science, Iran A. Shayganmanesh --- School of Mathematics, IranIn this paper, we apply a numerical scheme for solving fractional differential equations. Our approach is based on an operational matrix of fractional Riemann-Liouville integration with Legendre basis and zeros of Chebyshev polynomials. In this framework the fractional Burgers equation,... -
Characterization of relative n-isoclinism of a pair of Lie algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R.R. Moghaddam --- Department of Mathematics, Mashhad Branch, Iran F. Saeedi --- Department of Mathematics, Mashhad Branch, Iran S. Tajnia --- Department of Mathematics, Mashhad Branch, Iran B. Veisi --- Department of Mathematics, Mashhad Branch, IranIn 1994, Moneyhun introduced and studied the concept of isoclinism in Lie algebras. Moghaddam and parvaneh in 2009 introduced and gave some properties of isoclinism of a pair of Lie algebras. In this paper we introduce the concept of relative... -
Comparison of dexmedetomidine, pethidine and tramadol in the treatment of post-neuraxial anaesthesia shivering
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Lim Fern --- Department of Anaesthesia and Intensive Care, Malaysia Karis Misiran --- Department of Anaesthesia and Intensive Care, MalaysiaObjective: This study was performed to compare the effectiveness of intravenous dexmedetomidine with that of pethidine and tramadol in the treatment of post-neuraxial anaesthesia shivering. -
Sequentially pure injectivity
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Barzegar --- Department of Mathematics, IranInjectivity with respect to pure monomorphisms was studied before in categories of modules and categories of acts. In this paper we study this notion with respect to sequentially pure monomorphisms. -
Food abundance explains the breeding season of a tropical shorebird, the Crab Plover Dromas ardeola
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Giuseppe De Marchi --- Dipartimento di Scienze della Terra e dell'Ambiente, Italy Giorgio Chiozzi --- Museo Civico di Storia Naturale, Italy Dawit Semere --- Research Division, Eritrea Yohannes Mebrahtu --- Research Division, Eritrea Farhad Hosseini Tayefeh --- Department of the Environment Provincial Office, Iran Mohammed Almalki --- Department of Biology, College of Science, Kingdom of Saudi Arabia Mauro Fasola --- Dipartimento di Scienze della Terra e dell'Ambiente, ItalyThe timing of breeding in birds is a life-history trait that generally depends on food availability, but other factors may play a role, particularly in tropical areas where food availability is less seasonal than in temperate or polar areas. We... -
The developmental model of technological capability in the Iranian medical equipment industries: A multi-case study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mohammad-Ali Shafia --- Department of Progress Engineering, Iran Mehdi Mohammadi --- Department of New Sciences and Technologies, Iran Ali-Reza Babakhan --- Department of Progress Engineering, Iran Seyyed S Monajemzadeh --- Policy Making Office of Science and Technology, IranIn recent decades, many countries have selected the industrialisation path and adopted different strategies to improve economic conditions. In addition, wealth creation from science and technology has been welcomed by many theorists of development. Thus, developing countries have tried to... -
Audit firm rotation and audit report: evidence from the Tehran Stock Exchange
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Saman Mohammadi --- Department of Accounting, Iran Mohammad Monfared Maharlouie --- Master of Accounting, Iran Sepideh Kazemi Noori --- Financial Management, IranThis research is an attempt to study the relationship between audit firm rotation and audit reports in companies listed on the Tehran Stock Exchange from 2003 to 2011. Due to the nominal nature of the variables, this study uses a... -
Perceived organisational support influences on job satisfaction and organisational commitment among junior academic staff members
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Fumani Donald Mabasa --- Department of Business Management, South Africa Hlanganipai Ngirande --- Department of Human Resource Management, South AfricaThis study investigated the relationship between perceived organisational support, employee job satisfaction and organisational commitment among junior academic staff of a South African higher education institution (N =70; female = 41 .4%; masters qualification = 85 .7%). Participants completed a... -
Experiences and opinions of first-year students at a previously disadvantaged medical university in South Africa about alcohol consumption
Item type: Journal Article • Journal: South African Family Practice • Authors: Indiran Govender --- Department of Family Medicine and Primary Health Care, South Africa Kathryn Nel --- Department of Psychology, South Africa Morongwa Mirriam Mogotsi --- Department of Family Medicine and Primary Health Care, South AfricaBackground: The use of alcohol amongst first-year students in institutions of higher learning is problematic as it often leads to social and academic problems, for instance high dropout rates and high-risk sexual behaviour. Research on first-year students’ opinions regarding their... -
Effect of ondansetron on the analgesic efficacy of tramadol used for postoperative analgesia: a randomised controlled study
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Archana Murmu --- Department of Anaesthesiology, India Sudeshna Bhar Kundu --- Department of Anaesthesiology, India Amita Pahari --- Department of Anaesthesiology, India Anisha De --- Department of Anaesthesiology, India Dhiman Adhikari --- Department of Anaesthesiology, India Suchismita Pal --- Department of Anaesthesiology, India Abhimanyu Bhattacharya --- Department of Anaesthesiology, India Chiranjib Bhattacharyya --- Department of Anaesthesiology, IndiaBackground: Ondansetron is used to reduce tramadol induced postoperative nausea and vomiting (PONV). Studies on patient-controlled analgesia (PCA) found that ondansetron reduces the analgesic efficacy of tramadol. Drug requirement in PCA and in conventional intravenous analgesia without PCA device may... -
Comparison of biochemical compounds and antioxidant activities in date palm bunch fading disorder
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mahmood Izadi --- Department of Horticultural Science, College of Agriculture, Iran Ali Reza Shahsavar --- Department of Horticultural Science, College of Agriculture, IranDate palm bunch fading disorder, the cause of which remains unknown, is among the most harmful disorders affecting date production. In this study the contents of several biochemical compounds and antioxidant enzyme activity were measured in both faded and non-faded... -
Plant selection and grazing activity of the invasive snail Theba pisana in coastal Algoa Bay, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Sean van Elden --- DST–NRF Research Chair in Shallow Water Ecosystems, South Africa Nelson AF Miranda --- DST–NRF Research Chair in Shallow Water Ecosystems, South Africa Renzo Perissinotto --- DST–NRF Research Chair in Shallow Water Ecosystems, South Africa Janine B Adams --- Department of Botany, South AfricaThe land snail Theba pisana is a coastal species native to the Mediterranean but has been introduced to regions all over the world, including South Africa and Australia, where it is considered a pest. This study examines the diet of... -
A review of fiddler crabs (genus Uca Leach, 1814) in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Nasreen Peer --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa Nelson AF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa Renzo Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaFiddler crabs occur globally across tropical and subtropical coastal habitats including mangrove swamps, which are in decline worldwide. The genus has been well-studied in the Americas, Australia and Asia, whereas information on African species is scarce. This review summarises the... -
Dominating sets of the comaximal and ideal-based zero-divisor graphs of commutative rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Elham Mehdi-Nezhad --- Department of Mathematics and Applied Mathematics, South Africa Amir M. Rahimi --- School of Mathematics, IranLet R be a commutative ring with nonzero identity, and let I be an ideal of R. The ideal-based zero-divisor graph of R, denoted by ΓI (R), is the graph whose vertices are the set {x ∈ R \ I|... -
Equivariant completeness and regular injectivity of S-posets
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Rasouli --- Department of Mathematics, Science and Research Branch, IranIn this paper, considering the actions of a pomonoid S on posets, namely S-posets, we study some relations between equivariant completeness and regular injectivity of S-posets which lead to some homological classification results for pomonoids. In particular, we show that... -
Cobalt-60 is a logical, economical and comparable alternative to Ir-192: analysis and institutional experience from western India
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Upendra Nandwana --- Radiotherapy Department, India Narendra Rathore --- Radiotherapy Department, India Sunnia Gupta --- Radiotherapy Department, India Arvind Shukla --- Radiotherapy Department, India Satish Kumar --- Radiotherapy Department, India Kiran Intodia --- Radiotherapy Department, India Poonam Chand Bana --- Radiotherapy Department, India Abhay Jain --- Radiotherapy Department, IndiaObjectives: The objective of the study was to examine the dosimetry of intracavitary radiotherapy (ICRT) in carcinoma of the cervix using cobalt-60 (Co-60) as source of ICRT, and as an alternative to iridium-192 (Ir-192). -
Evidence of an inverse relationship between cytotoxin-associated gene A-positive Helicobacter pylori infection and oesophageal adenocarcinoma and possible geographical implications
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Y Rasmi --- Department of Biochemistry, Faculty of Medicine, Iran. -
Health-seeking behaviour of people with sexually transmitted infections in the community of Nkomazi East, Mpumalanga
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Indiran Govender --- Department of Family Medicine, Mecha Eche --- Tonga District Hospital, MpumalangaThe control of sexually transmitted infections (STIs) is a priority for the World Health Organization. It is estimated that there are 11 million cases of STIs per year in South Africa. Health-seeking and sexual behaviours are important in the management... -
Tetanus: a patient in a primary healthcare setting
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Indiran Govender --- Department of Family Medicine and Primary Health Care, South Africa Christopher Clark --- Department of Family Medicine and Primary Health Care, South AfricaTetanus is a disease caused by a Clostridium tetani infection, a complication of wounds. We present a case in which a patient presented with seizures and was incorrectly assessed to have epilepsy. Permission to publish this report was obtained from... -
Locating bilharzia transmission sites in South Africa: guidelines for public health personnel
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Chris Appleton --- School of Life Sciences, Nelson Miranda --- Department of Zoology, South AfricaBilharzia surveillance at local authority level in South Africa relies on public health personnel being able to locate transmission sites. Although several methods have been tried, the method of choice is collecting snails, identifying those that serve as intermediate hosts... -
Characteristics of women requesting legal termination of pregnancy in a district hospital in Hammanskraal, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Aluwani Ndwambi --- Department of Family Medicine, South Africa Indiran Govender --- Department of Family Medicine, South AfricaIntroduction: Worldwide, the most commonly reported reason stated by women for undergoing a termination of pregnancy (TOP) is to postpone or stop childbearing. The second most common cited reason is socio-economic concerns, which include a disruption to education or employment,... -
Risk factors for latent tuberculosis infection among healthcare workers in a university-affliated hospital
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Mohammad Nassaji --- Department of Infectious Disease, Iran Raheb Ghorbani --- Department of Social Medicine, IranHealthcare workers represent an important risk group for exposure, infection, and potentially disease by Mycobacterium tuberculosis. The aim of this study was to assess the prevalence and risk factors for latent tuberculosis infection among healthcare workers in a teaching hospital... -
Optimisation of nitrogen and potassium for Aloe vera (L.) Burm.f. in a soilless culture system
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jamal-Ali Olfati --- Horticultural Department, Iran Mohammad Saadatian --- Department of General Science, Faculty of Education, Iraq Eshaq Moqbeli --- Horticultural Department, IranAloe vera (L.) Burm.f. is highly appreciated due to its short growth period and high economic value among all Aloe species, and is used in pharmaceuticals, folk medicine, healthcare, cosmetic products and food products. Hydroponic systems have the potential to... -
Prodromal psychotic symptoms and psychological distress among secondary school students in Abeokuta, Nigeria
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Adeniran O Okewole --- Neuropsychiatric Hospital, Nigeria Sewanu S Awhangansi --- Neuropsychiatric Hospital, Nigeria Mojisola Fasokun --- Military Hospital, Nigeria Adetayo A Adeniji --- Neuropsychiatric Hospital, Nigeria Omotilewa Omotoso --- Neuropsychiatric Hospital, Nigeria Daniel Ajogbon --- Neuropsychiatric Hospital, NigeriaObjective: This study aimed to investigate the relationship between prodromal psychotic symptoms and psychological distress among Nigerian adolescents. -
Some generalizations and unifications of CK (X), Cψ(X) AND C∞(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Taherifar --- Department of Mathematics, IranLet P be an open filter base for a filter F on X. We denote by CP (X) (C∞P (X)) the set of all functions f ∈ C(X) where Z(f ) ({x : |f (x)| <}, ∀n∈ ) contains an... -
Organisational commitment and job retention among nurses in a South African setting: An exploratory study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Terera Sharon Ruvimbo --- Department of Human Resource Management and Labour Relations, South Africa Ngirande Hlanganipai --- Department of Human Resource Management and Labour Relations, South AfricaThe objective of this article was to determine the influence of Human Resource Management practices (compensation and reward practices, performance evaluation practices and managerial leadership practices) on organisational commitment and retention of nurses in a South African public hospital setting... -
Effects of smoke, ash and heat shock on seed germination of seven species from Central Zagros rangelands in the semi-arid region of Iran
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ali Asghar Naghipour --- Department of Natural Resources, Iran Hossein Bashari --- Department of Natural Resources, Iran Seyed Jamaleddin Khajeddin --- Department of Natural Resources, Iran Pejman Tahmasebi --- Faculty of Natural Resources and Earth Science, Iran Majid Iravani --- Department of Natural Resources, IranFire products have been widely identified as germination cues for a number of species from both fire-prone and fire-free ecosystems. However, there is uncertainty about the effects of fire products on seed germination of semi-arid rangeland species. We examined the... -
Noncyclic mappings and best proximity pair results in Hilbert and uniformly convex Banach spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Moosa Gabeleh --- Department of Mathematics, IranA new class of noncyclic mappings, called generalized noncyclic relatively nonexpansive, is introduced and used to study the existence of best proximity pairs in the setting of uniformly convex Banach spaces. We also obtain a weak convergence theorem for noncyclic... -
A novel fixed point theorem for the k-Meir-Keeler function
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mona Nabiei --- Department of Mathematics, Iran Taha Ezzati G. --- Department of Mathematics, IranGeneralized Meir-Keeler functions are introduced that contain a class of weakly uniformly strict contraction maps. A theorem is proven that assures the existence of a fixed point for the closed k-Meir-Keeler functions and provides a con- structive method to find... -
Palliative chemotherapy in recurrent carcinoma cervix: experience from a regional cancer centre in southern India
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Ravikiran Bonanthaya --- Department of Radiation Oncology, India KC Lakshmaiah --- Department of Medical Oncology, India Suresh Babu --- Department of Medical Oncology, India D Lokanatha --- Department of Medical Oncology, IndiaAims: To evaluate the clinical outcome and complications with two different palliative chemotherapy regimens in recurrent cervical carcinoma. -
Training and development for career management and talent development in wholesale and retail industry in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ngirande Hlanganipai --- Department of Human Resource Management and Labour Relations, South Africa Mazanai Musara --- School of Business and Economics,The study investigated ways to achieve sustainable career management as well as talent management for employees of a wholesale and retail industry operating in the city of Polokwane, South Africa. Employees (n = 85; females = 47%) completed a questionnaire... -
α-Baer rings and some related concepts via C(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.R. Aliabad --- , , Iran A. Taherifar --- , , Iran N. Tayarzadeh --- , , IranWe call a commutative ring R an F IN -ring (resp., F SA-ring) if for any two finitely generated I, J ⊴R we have Ann(I)+Ann(J )=Ann(I∩J ) (resp., there is K ⊴ R such that Ann(I)+Ann(J )=Ann(K)). Moreover, we extend... -
Association between vitamin A and E and apolipoprotein A and B levels in type 2 diabetes
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: P. Yavari --- Department of Nutrition and Biochemistry, Iran F. Siassi --- Department of Nutrition and Biochemistry, Iran M. Jalali --- Department of Nutrition and Biochemistry, Iran M. Chamari --- Department of Nutrition and Biochemistry, Iran A. Keshavarz --- Department of Nutrition and Biochemistry, Iran H. Layegh --- Department of Nutrition and Biochemistry, Iran M. Yavari --- Department of Nutrition and Biochemistry, Iran K. Mohammad --- Department of Epidemiology and Biostatistics, Iran B. Larigani --- Undersecretary of Research, IranObjective. To determine the relationship between serum vitamin A and E and apolipoprotein levels in type 2 diabetic patients. -
Non-fatal injuries of interpersonal violence at the Leratong Provincial Hospital, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Saimen Amashnee --- Department of Forensic Medicine, South Africa Gordon Guinevere --- Forensic Medicine, South Africa Govender Indiran --- Family Medicine, South AfricaBackground: Interpersonal violence is a global health issue. More than 1.6 million people die annually as a result of violence. Injured survivors suffer from a range of physical, sexual, reproductive and mental health problems. The aim of this study is... -
The impact of motivational and cognitive involvement on EFL learners’ task performance
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mohammad Reza Hasannejad --- Department of English Language Teaching, Ahar Branch, Iran Masoud Zoghi --- Department of English Language Teaching, Ahar Branch, Iran Hanieh Davatgari Asl --- Department of English Language Teaching, Ahar Branch, IranAlthough the role of task factors which can influence learners’ affective characteristics such as motivation and cognition has been of researchers’ enduring interest, few empirical studies have investigated motivational and cognitive operational impacts on task performance in instructional settings. This... -
Task type and incidental L2 vocabulary learning: Repetition versus task involvement load
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Ali Akbar Ansarin --- University of Tabriz, Iran Aso Bayazidi --- Department of English, Boukan Branch, IranThis study investigated the effect of task type on incidental L2 vocabulary learning. The different tasks investigated in this study differed in terms of repetition of encounters and task involvement load. In a within-subjects design, 72 Iranian learners of English... -
Suspended silt and salinity tolerances of the first zoeal stage of the fiddler crab Uca annulipes (Decapoda: Brachyura) and why marine connectivity is essential to the survival of the species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Peer --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa NAF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaFiddler crabs (Uca spp.) undergo the zoeal stage of development in open-ocean waters, where they experience stable salinity levels, low turbidity and reduced predation. The St Lucia estuarine system has undergone many geomorphological changes, both natural and anthropogenic, and the... -
Epigraph of operator functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohsen Kian --- Department of Mathematics, Faculty of Basic Sciences, IranIt is known that a real function f is convex if and only if the set E(f) = {(x, y) ∈ ℝ × ℝ; f (x) ≤ y}, the epigraph of f is a convex set in ℝ2. We state an extension... -
Stable isotope analysis of consumer food webs indicates ecosystem recovery following prolonged drought in a subtropical estuarine lake
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MS Bird --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa NAF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa N Peer --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa JL Raw --- DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaAssessing changes in food-web structure provides a useful monitoring tool for gauging the resilience of ecosystems in the face of climatic impacts. We consider the ecological resilience of a large estuarine lake (St Lucia Estuary, South Africa) in the wake... -
Knowledge and practice of the prevention of mother-to-child transmission of HIV guidelines amongst doctors and nurses at Odi Hospital, Tshwane District
Item type: Journal Article • Journal: South African Family Practice • Authors: Kingsley Ogbonna --- Department of Family Medicine and Primary Health Care, South Africa Indiran Govender --- Department of Family Medicine and Primary Health Care, South Africa John Tumbo --- Department of Family Medicine and Primary Health Care, South AfricaBackground: Almost 60 million people are infected with and 25 million people have already died from HIV/AIDS. Sub-Saharan Africa is the region most affected, with 67% of all people living with HIV and 91% of all new infections amongst children... -
Habitat associations of birds at Mara Naboisho Conservancy, Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland Munir Z Virani --- The Peregrine Fund, KenyaHabitat associations of birds were quantified through fixed-radius timed bird counts at Mara Naboisho Conservancy within the Greater Mara Region, Kenya. We conducted 73 timed counts in four distinct habitats (riparian, woodland, rocky outcrop and plains) in both dry and... -
The Zero Divisor Graph of 2 × 2 Matrices Over a Field
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ali Reza Ashrafi --- Department of Pure Mathematics, Faculty of Mathematical Sciences, I.R. Iran Adel Tadayyonfar --- Department of Pure Mathematics, Faculty of Mathematical Sciences, I.R. IranA zero divisor graph, Γ(R), is formed from a ring R by having each element of Z(R) \ {0} to be a vertex in the graph and having two vertices u and v adjacent if the corresponding elements from the... -
A 12 year chart review of childhood and adolescent onset psychosis at a Nigerian tertiary mental health facility
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Adeniran O Okewole --- Neuropsychiatric Hospital, Adegboyega Ogunwale --- Neuropsychiatric Hospital, Temilola J Mosanya --- Osun State University Teaching Hospital, Babatunde M Ojo --- Neuropsychiatric Hospital,Objectives: To review the profile of children and adolescents presenting with psychosis at a specialist mental health facility, and to compare childhood with adolescent onset psychosis. -
Using stable isotope analysis to study the diet of Gilchristella aestuaria larvae: preliminary insights into the foodwebs of six South African estuaries
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Costalago --- Department of Ecology, Environment and Plant Sciences, Sweden NAF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Zoology, South Africa NA Strydom --- Department of Zoology, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Zoology, South AfricaSouth African estuarine systems are becoming increasingly altered by anthropogenic and environmental factors, but the consequences of such changes for these systems are still not fully understood. The most common approach for evaluating the ecological status of aquatic systems is... -
Weakly almost periodic functionals on certain Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Rasoul Nasr-Isfahani --- Department of Mathematical Sciences, Iran Mehdi Nemati --- Department of Mathematical Sciences, IranFor a Lau algebra A, we study the Banach space WAP(A) of all weakly almost periodic functionals on A to obtain some equivalent conditions for the existence of topological left invariant means on a topological left introverted subspace X of... -
Remarks on subrings of C(X) of the form I + C* (X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.R. Aliabad --- Department of Mathematics, Iran M. Parsinia --- Department of Mathematics, IranLet A(X) be an intermediate subring of C(X) and I be an ideal of A(X). We give some topological characterizations for the smallest z-ideal Iz (A) containing I and the largest z-ideal Iz (A) contained in I. Using this, we... -
Approximate cohomology in Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Pourabbas --- Faculty of Mathematics and Computer Science, Iran A. Shirinkalam --- Faculty of Mathematics and Computer Science, IranWe introduce the notions of approximate cohomology and approximate homotopy in Banach algebras and we study the relation between them. We show that the approximate homotopically equivalent cochain complexes give the same approximate cohomologies. As a special case, approximate Hochschild... -
An inverse problem for space and time fractional evolution equations with an involution perturbation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bashir Ahmad --- NAAM Research Group, Department of Mathematics, Faculty of Science, Saudi Arabia Ahmed Alsaedi --- NAAM Research Group, Department of Mathematics, Faculty of Science, Saudi Arabia Mokhtar Kirane --- NAAM Research Group, Department of Mathematics, Faculty of Science, Saudi Arabia Ramiz G. Tapdigoglu --- LaSIE, Facult´e des Sciences et de Technologies, FranceWe consider an inverse problem for a space and time fractional evolution equation, interpolating the heat and wave equations, with an involution. Existence and uniqueness results for the given problem are obtained via the method of separation of variables. -
National collective identity in transitional societies: Salience and relations to life satisfaction for youth in South Africa, Albania, Bulgaria, the Czech Republic, Kosovo and Romania
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Radosveta Dimitrova --- Stockholm University, Sweden Pasquale Musso --- University of Palermo, Italy Luzelle Naudé --- University of the Free State, South Africa Skerdi Zahaj --- University of Tirana, Albania Iva Polackova Solcova --- The Czech Academy of Sciences, the Czech Republic Delia Stefenel --- Lucian Blaga University of Sibiu, Romania Fitim Uka --- Private Bearer of Higher Education “Qeap Heimerer”, Kosovo Venzislav Jordanov --- University of World and National Economy (UWNE), Bulgaria Evgeni Jordanov --- Ivan Rilski University, Bulgaria Peter Tavel --- Palacky University, the Czech RepublicIn this study we investigated the salience of the construct of national collective identity and its associations with life satisfaction among adolescents living in transitional societies characterised by relevant change in the last decades. Participants were 1 066 adolescents (M... -
An investigation of the reliability and validity of peer, self-, and teacher assessment
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mohammad Salehi --- Languages and Linguistics Centre, Iran Zahra Sayyar Masoule --- Languages and Linguistics Centre, IranAlternative types of assessment have been introduced to align to students’ learning aims. Although the growing body of literature about alternative types of assessment such as peer-assessment and self-assessment shed light on the advantages and benefits of embedding assessment in... -
The theoretical question of the practical considerations: Some Carnapian reflections
Item type: Journal Article • Journal: South African Journal of Philosophy • Authors: Majid Davoody Beni --- Department of Management, Science and Technology, IranIn spite of some interesting recent research, Carnap’s emphasis on the bearing of the practical features on the constitution of knowledge is not duly appreciated yet. A few decades before the emerging thrill about the pragmatic encroachment in epistemology, it... -
Generalized module extension Banach algebras: Derivations and weak amenability
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Ramezanpour --- School of Mathematics and Computer Science, Iran S. Barootkoob --- Department of Mathematics, IranLet A and X be Banach algebras and let X be an algebraic Banach A-module. Then the ℓ1-direct sum A × X equipped with the multiplication -
Effectiveness of Moringa oleifera seed as a coagulant in domestic wastewater treatment
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: K. A. Adeniran --- Department of Agricultural and Biosystems Engineering, Nigeria T. D. Akpenpuun --- Department of Agricultural and Biosystems Engineering, Nigeria B. A. Akinyemi --- Department of Agricultural and Biosystems Engineering, Nigeria R. A. Wasiu --- Department of Agricultural and Biosystems Engineering, NigeriaAn investigation on the effectiveness of Moringa oleifera seed for the treatment of domestic sewage was carried out in 15 litres plastic pots. Completely randomized design (CRD) experimental design was adopted. The treatments included: the control culture (no Moringa seed),... -
The influence of the wheat rhizosphere on phosphorus desorption kinetics in calcareous soils amended with municipal sewage sludge
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tahereh Raiesi --- Horticultural Science Research Institute, Iran Alireza Hosseinpur --- Department of Soil Science, College of Agriculture, Iran Bijan Moradi --- Horticultural Science Research Institute, IranPlant growth in arid environments is limited by phosphorus (P) availability because of the low concentration of P in the soil solution. In addition, soil processes in the rhizosphere affect the mineral nutrition of plants. Thus, greenhouse and laboratory experiments... -
Incidence and pattern of tuberculosis treatment success rates in different levels of the human development index: a global perspective
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Salman Khazaei --- Department of Epidemiology, Iran Shahab Rezaeian --- Research Center for Environmental Determinants of Health (RCEDH), Iran Vali Baigi --- Department of Epidemiology and Biostatistics, Iran Mohammad Saatchi --- Department of Epidemiology and Biostatistics, Iran Leila Molaeipoor --- Department of Epidemiology, Iran Zaher Khazaei --- Social Determinants of Health Research Center, Iran Somayeh Khazaei --- Faculty of Paramedical Science, Department of Operating Room, Iran Owais Raza --- Department of Epidemiology and Biostatistics, IranBackground: Tuberculosis (TB) treatment success rate remains a public health challenge in many developed and developing countries. The correlation between the incidence and pattern of TB and the Human Development Index (HDI) has not been globally determined. This study aimed... -
A note on graded generalized local cohomology modules
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Hero Saremi --- Department of Mathematics, IranLet be a positively graded commutative Noetherian ring with irrelevant ideal and let ɑ be a graded ideal contained in R+. Let M, N be two finitely generated graded R-modules. In this paper, we study the finiteness and vanishing of... -
Subgroups with large relative commutativity degree
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Farrokhi --- Institute for Advanced Studies in Basic Sciences (IASBS), and Center for Research in Basic Sciences and Contemporary Technologies, IASBS, Iran Hesam Safa --- Department of Mathematics, Faculty of Basic Sciences, IranThe order of subgroups with large relative commutativity degrees are determined. Also a relationship between the number of relative commutativity degrees of a group and the length of its subgroup chains is obtained. -
Investigating the effects of Lactobacillus casei on some biochemical parameters in diabetic mice
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Feizollah Asgharzadeh --- Faculty of Medicine, Department of Clinical Biochemistry and Laboratory Sciences, Iran Asghar Tanomand --- Department of Microbiology, Iran Mohammad Reza Ashoori --- Faculty of Medicine, Department of Clinical Biochemistry and Laboratory Sciences, Iran Ali Asgharzadeh --- Tehran Institute of Psychiatry, Iran Nosratollah Zarghami --- Faculty of Medicine, Department of Clinical Biochemistry and Laboratory Sciences, IranAims: Diabetes mellitus is a metabolic disorder characterised by inadequate pancreatic insulin secretion or the insulin present being unable to perform its function properly. Consistent with the beneficial effects of probiotics and their ability to lower glucose levels, an impact... -
The generic structures and lexico-grammaticality in English academic research papers
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Valeh Valipour --- Department of English Language Teaching, Ahar Branch, Iran Nader Assadi --- Department of English Language Teaching, Ahar Branch, Iran Haniyeh Davatgari Asl --- Department of English Language Teaching, Ahar Branch, IranThe present study aimed to discover how selected English language authors employ specific rhetorical, grammatical, and stylistic elements in presenting new knowledge to the target audience and how they communicate science to the community of academicians in order to convey... -
The distribution of verb tenses and modals in journal articles’ abstracts
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Deny A. Kwary --- English Department, Indonesia Angkita Kirana --- English Department, Indonesia Almira F. Artha --- English Department, IndonesiaThis study aims at analysing the verb tenses and modals used in each sentence found in the abstracts of journal articles and explaining when each verb tense or modal is used. In addition, this study also discusses the similarities and... -
Relationships among motivation (self-efficacy and task value), strategy use and performance in L2 writing
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Saeid Raoofi --- Department of English Language, Iran Yahya Maroofi --- Department of Educational Science, IranThis paper reports on a study that investigated the relationships among self-efficacy, task value, strategy use and performance in L2 writing. The participants were 304 undergraduate ESL (English as a second language) students in Malaysia. Questionnaires and writing performance tests... -
Generalized 2-local isometries of spaces of continuously differentiable functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maliheh Hosseini --- Department of Mathematics, IranLet C(n) (I) denote the Banach space of n-times continuously differentiable functions on I = [0, 1], equipped with the norm ||f||n = max { |f(0)|, |fʹ(0)|, … , |f(n–1)(0)|, ||f(n)||∞} (f ) ∈ C(n) (I)), where ||·||∞ is the supremum norm... -
Continuity of generalized derivations on JB*-algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohammad Gholampour --- Department of Pure Mathematics, Iran Shirin Hejazian --- Department of Pure Mathematics, IranWe prove that every generalized Jordan derivation D from a JB∗-algebra ???? into itself or into its dual space is automatically continuous. In particular, we establish that every generalized Jordan derivation from a C∗-algebra to a Jordan Banach module is... -
Influences of the arbuscular mycorrhizal fungus Glomus mosseae on morphophysiological traits and biochemical compounds of common bean (Phaseolus vulgaris) under drought stress
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ali Ganjeali --- Department of Biology, Faculty of Sciences, Iran Elham Ashiani --- Department of Biology, Faculty of Sciences, Iran Maryam Zare --- Department of Biology, Faculty of Sciences, Iran Elahe Tabasi --- Department of Biology, Faculty of Sciences, IranThe symbiosis of arbuscular mycorrhizae (AM) with plant roots can enhance plant responses, especially to drought stress. An experiment was conducted in a growth chamber to examine the impacts of arbuscular mycorrhizae on improving the drought tolerance of common bean... -
A novel system dynamics’ model for the motors of a sectoral innovation system–simulating and policymaking
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sayyed Mohsen Azad --- Department of Industrial Engineering, Iran Seyed Hassan Ghodsypour --- Department of Industrial Engineering, IranIn recent years, science and technology policymaking has been taken into consideration by many researchers. One of the most important fields of this policymaking is innovation systems’ management; which is divided into national, regional, sectoral and technological innovation systems. In... -
The long way to “extreme psychologism”
Item type: Journal Article • Journal: South African Journal of Philosophy • Authors: Seyyed Mohsen Eslami --- Department of Philosophy, IranIn “Clearing Space for Extreme Psychologism about Reasons”, Mitova argues against two main views about the ontology of reasons. Instead, she presents an argument by elimination for “extreme psychologism” as a prima facie superior alternative. I will argue for the... -
An exploration of the reasons women give for choosing legal termination of pregnancy at Soshanguve Community Health Centre, Pretoria, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Carrien Steyn Indiran Govender --- Department of Family Medicine and Primary Health Care, South Africa John Velaphi NdimandeBackground: Termination of pregnancy (TOP) is one of the most commonly performed gynaecological procedures in the world and was legalised in South Africa in 1996 with the passing of the Choice on Termination of Pregnancy Act, 1996 (Act No. 29... -
Nanofluid flow and heat transfer in a Brinkman porous channel with variable porosity
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shirley Abelman --- School of Computer Science and Applied Mathematics and DST-NRF Centre of Excellence in Mathematical and Statistical Sciences, South Africa Amir Basiri Parsa --- Mechanical Engineering Department, Iran Habib-Olah Sayehvand --- Mechanical Engineering Department, IranThe problem of forced convection in a channel filled with a nanofluidsaturated porous medium is investigated, numerically. A finite difference Computational Fluid Dynamics (CFD) model with structured uniform grid system is employed to solve the momentum and energy equations. In... -
Towards an understanding of the commercialization drivers of research findings in Iran
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Leila Namdarian --- Department of Information Policy, Society and Information Faculty, Iran Ali Naimi-Sadigh --- Department of e-Business, Information Technology Faculty, IranTaking a look at the performance of Iranian universities and research centres, one might notice that despite their Research and Development (R&D) capacities, most have fallen short in research commercialization, leaving them dependent on government funding. Hence, certain mechanisms should... -
Latitudinal gradients and poleward expansion of mangrove ecosystems in South Africa: 50 years after Macnae’s first assessment
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Peer --- DST/NRF Research Chair in Shallow-Water Ecosystems, South Africa A Rajkaran --- Department of Biodiversity and Conservation Biology, South Africa NAF Miranda --- DST/NRF Research Chair in Shallow-Water Ecosystems, South Africa RH Taylor --- Department of Hydrology, South Africa B Newman --- CSIR Natural Resources and the Environment, South Africa F Porri --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa JL Raw --- Department of Botany, South Africa SP Mbense --- Department of Botany, South Africa JB Adams --- Department of Botany, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow-Water Ecosystems, South AfricaMangroves occur in South African estuaries at their poleward distribution limits, extending into temperate habitats. In 1963, William Macnae published the first comprehensive assessment of mangrove swamps in South Africa and made firsthand observations of these mangrove ecosystems. This article... -
Remarks on intermediate C-rings of C(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mehdi Parsinia --- Departemant of Mathematics, IranLet X be a Tychonoff space and A(X) be a subring of C(X) containing C∗(X). We introduce the notion of -ideal in A(X). It is observed that the class of -ideals contains the class of zA-ideals and is contained in... -
Knowledge, attitudes and practices of doctors at Jubilee Hospital, Tshwane District, regarding the syndromic management guidelines for sexually transmitted infections
Item type: Journal Article • Journal: South African Family Practice • Authors: Charles Uchenna --- Department of Family Medicine and Primary Health Care, Sefako Makgatho Health Sciences University, South Africa Indiran Govender --- Department of Family Medicine and Primary Health Care, Sefako Makgatho Health Sciences University, South AfricaBackground: Sexually transmitted infections (STIs) are a public health problem globally, but especially so in sub-Saharan Africa. They contribute significantly to the burden of disease in South Africa and are recognised as major contributors to the human immunodeficiency virus (HIV)... -
A note on weakly Lindelöf frames
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mostafa Abedi --- Esfarayen University of Technology, IranThe notion of σ∗-properness of a subset of a frame is introduced. Using this notion, we give necessary and sufficient conditions for a frame to be weakly Lindelöf. We show that a frame is weakly Lindelöf if and only if... -
Comment on ‘Cell phone use and ill health: is there a definite relationship?’
Item type: Journal Article • Journal: South African Family Practice • Authors: SMJ Mortazavi --- Fox Chase Cancer Center, USA SAR Mortazavi --- School of Medicine, IranProf Gboyega A Ogunbanjo, in his editorial entitled ‘Cell phone use and ill health: is there a definite relationship?’, published in South African Family Practice, has addressed the possible link between mobile phone use and adverse health effects such as... -
Impact of information technology on innovation in determining firm performance
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Indiran Poobalan Naidoo --- Graduate School of Business and Leadership, University of KwaZulu-Natal, South Africa Muhammad Hoque --- Graduate School of Business and Leadership, University of KwaZulu-Natal, South AfricaThe aim of this study is to investigate the strategic relevance of Information Technology (IT). The study used resource-based theory to test if IT was a competitive resource, by examining the role it played between the constructs of innovation capability... -
On unitary down-closed regular monomorphisms of pomonoid actions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Farideh Farsad --- Department of Mathematics, Faculty of Mathematics, Statistics and Computer Science, Iran Ali Madanshekaf --- Department of Mathematics, Faculty of Mathematics, Statistics and Computer Science, IranIn this paper we characterize injective objects in the category of S-posets and S-poset maps for a pomonoid S, with respect to the class of unitary down-closed embeddings. Also, the behaviour of this notion of injectivity with respect to products... -
On c-realcompact spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: O.A.S. Karamzadeh --- Department of Mathematics, Iran Z. Keshtkar --- Department of Mathematics, IranThe c-realcompact spaces are fully studied and most of the important and well-known properties of realcompact spaces are extended to these spaces. For a zero-dimensional space X, the space υ0X, which is the counterpart of υX, the Hewitt realcompactification of... -
The effect of input enhancement and elaboration techniques on learning discourse markers: A gender role study
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Azin Torkaman --- English Teaching Department, Ghazvin Branch, Iran Zohre Mohamadi --- English Teaching and Translation Department, Karaj Branch, IranThis study investigated the comparative effect of input enhancement and elaboration techniques on learning discourse markers (DMs) through reading activities among 120 Iranian male and female intermediate English-as-foreign-language learners. Participants were selected on the basis of their general proficiency and... -
Pre-task planning and explicit instruction: Effects on CALF in an oral jigsaw task and gains in linguistic knowledge
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Karim Sadeghi --- English Language Department, Iran Farah Ghaderi --- English Language Department, IranTask planning and its effect on task performance have attracted generous attention by researchers in task-based language teaching. Scholars have investigated the link between various forms of planning (pre- and within, as well as different lengths of planning times) on... -
Understanding memorable tourism experiences: A case study
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Miranda Cornelisse --- Tourism, The NetherlandsThe desire for new experiences that are truly authentic has become an important mainstream in the tourism industry. The main goal of this empirical case study was twofold: 1) To determine which concept of authenticity in tourism literature is most... -
Some properties of c-covers of a pair of Lie algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Homayoon Arabyani --- Department of Mathematics, Iran Hesam Safa --- Department of Mathematics, Faculty of Basic Sciences, IranIn [H. Safa and H. Arabyani, On c-nilpotent multiplier and c-covers of a pair of Lie algebras, Commun. Algebra 45(10) (2017), 4429–4434], we characterized the structure of the c-nilpotent multiplier of a pair of Lie algebras in terms of its... -
A variance bound for a general function of independent noncommutative random variables
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohammad Sal Moslehian --- Department of Pure Mathematics, Center of Excellence in Analysis on Algebraic Structures (CEAAS), Iran Ali Talebi --- Department of Pure Mathematics, Center of Excellence in Analysis on Algebraic Structures (CEAAS), IranThe main purpose of this paper is to establish a noncommutative analogue of the Efron-Stein inequality, which bounds the variance of a general function of some independent random variables. Moreover, we state an operator version including random matrices, which extends... -
On zero-divisors of near-rings of polynomials
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Abdollah Alhevaz --- Faculty of Mathematical Sciences, Iran Ebrahim Hashemi --- Faculty of Mathematical Sciences, Iran Fatemeh Shokuhifar --- Faculty of Mathematical Sciences, IranIn this paper, we are interested to study zero-divisor properties of a 0-symmetric nearring of polynomials R0[x], when R is a commutative ring. We show that for a reduced ring R, the set of all zero-divisors of R0[x], namely Z(R0[x]),... -
Quasi injectivity and θ-internal order sum in partially ordered acts
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mahdieh Yavari --- Young Researchers and Elites club, Science and Research Branch, IranInjectivity (weakly injectivity) of objects is an important concept which category theory inherited from homological and commutative algebra. One of the useful kinds of weakly injectivity is quasi injectivity. In this paper, we study the relation between different kinds of... -
On Bourbaki associated prime divisors of an ideal
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.R. Aliabad --- Department of Mathematics, Iran M. Badie --- Department of Basic Sciences, IranSuppose R is a reduced ring. The set of Bourbaki associated prime divisors of an ideal I of R is denoted by (I) and (R) is used instead of (0). Inspired by the concept of fixed-place ideal (fixed-place family), we... -
On countably uniform closed-spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Hayati --- Department of Mathematics, Iran M. Namdari --- Department of Mathematics, Iran M. Paimann --- Department of Mathematics, IranLet X be a topological space and Cc(X) be the functionally countable subalgbera of C(X). We call X to be a countably uniform closed-space, briefly, a CU C-space, if Cc(X) is closed under uniform convergence. We investigate that countably uniform... -
Rhetoric-specific features of interactive metadiscourse in introduction moves: A case of discipline awareness
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Hadi Kashiha --- Department of English, Iran Susan Marandi --- Department of English, IranTo gain credibility and get acceptance from academic discourse communities, writers rely heavily on communicating with their audiences through publishing research articles (RAs). Analysing the generic structure of RAs can deal with issues relating to their language style and the... -
d-ideals, f d-ideals and prime ideals
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Safaeeyan --- Department of Mathematics, Iran A. Taherifar --- Department of Mathematics, IranLet R be a commutative ring. An ideal I of R is called a d-ideal (f d-ideal) provided that for each a ∈ I (finite subset F of I) and b ∈ R, Ann(a) ⊆ Ann(b) (Ann(F) ⊆ Ann(b)) implies... -
Red category criteria of the South African triage scale may need to be revised
Item type: Journal Article • Journal: South African Family Practice • Authors: Mohsen Ebrahimi --- Department of Emergency Medicine, Faculty of Medicine, Iran Amir Mirhaghi --- Nursing and Midwifery Care Research Center, Iran -
Some equivalent conditions for Huneke’s two conjectures
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Fatemeh Sohrabi --- Department of Mathematics, Faculty of Sciences, Iran Kamal Bahmanpour --- Department of Mathematics, Faculty of Sciences, Iran Ghader Ghasemi --- Department of Mathematics, Faculty of Sciences, IranIn this paper we give some equivalent conditions for the C. Huneke’s two conjectures concerning the finiteness properties of the local cohomology module , where R is a regular local ring, I is an ideal of R and i ≥... -
Universalization of Indonesian cultural and scientific regulations
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Miranda Risang Ayu Palar --- Faculty of Law, Indonesia Rajah Rasiah --- Asia-Europe Institute, MalaysiaIndonesia ratified the agreement on the establishment of the World Trade Organization, including its annex agreement, the Trade-Related Aspects of Intellectual Property Rights (TRIPS) in 1995. The alignment of Indonesian Intellectual Property Rights (IPRs) with that of the WTO’s TRIPS... -
Indicators of L2 writing value among undergraduate students
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Saeid Raoofi --- Ministry of Education, IranThis article reports on a study that investigated the L2 writing value of undergraduate students in Malaysia. A task-value instrument was developed through a multi-stage process, focusing on the values that students place on academic writing in English. The participants... -
Rings of continuous functions vanishing at infinity on a frame
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ali Akbar Estaji --- Faculty of Mathematics and Computer Sciences, Iran Ahmad Mahmoudi Darghadam --- Faculty of Mathematics and Computer Sciences, IranLet C(X) denote the ring of all real-valued continuous functions on a topological space X; and C∞(X) be the subring of all functions C(X) which vanish at infinity. In [2], the paper “Rings of continuous functions vanishing at infinity,” (Comment... -
Embodiment of rhetorical moves in lexical bundles in abstracts of the medical sciences
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Zeinab Abdollahpour --- English Language Department, Iran Javad Gholami --- English Language Department, Faculty of Humanities, IranThis study investigates the embodiment of rhetorical moves in general and technical lexical bundles (LBs) in the abstract sections (ASs) of research articles in medical sciences and the relationship between them. A corpus of 1 500 empirically oriented ASs of... -
Narrative therapy for depression and anxiety among children with imprisoned parents: A randomised pilot efficacy trial
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Farzad Jalali --- , , Iran Seyedeh Fatemeh Hashemi --- , , Iran Alireza Hasani --- , , IranThis study aimed to determine the efficacy of narrative group therapy in reducing depression and anxiety among children with imprisoned parents. The study design was a randomised clinical trial with an experimental group, and waiting list group as the control... -
Strongly continuous semigroups on locally finite graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bijan Ahmadi Kakavandi --- , IranIn this paper, we propose a unified approach to prove the existence and uniqueness of the solutions of some of the evolution equations in combinatorial graphs. Our approach is based on the theory of strongly continuous semigroups in Banach spaces... -
Approximate symmetries, conservation laws and numerical solutions for a class of perturbed linear wave type system
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Reza Hejazi --- , Iran Soleiman Hosseinpour --- , Iran Elham Lashkarian --- , IranThe present work considers the Lie group analysis of a system of linear wave type perturbed systems. The methodology is based on finding approximate symmetry operators of a given system. Approximate conservation laws are found via an approximate version of... -
Nonlinear diameter preserving maps on function spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Juan J. Font --- Departamento de Matemáticas (IMAC), Spain Maliheh Hosseini --- Department of Mathematics, IranIn this paper we study nonlinear diameter preserving mappings defined between function spaces and obtain generalizations of, basically, all known results concerning diameter preservers. In particular, we give a complete description for algebras of continuously differentiable functions, (little) Lipschitz algebras... -
Blow-up of smooth solutions of the time-fractional Burgers equation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ahmed Alsaedi --- NAAM Research Group, Department of Mathematics, Faculty of Science, Saudi Arabia Mokhtar Kirane --- LaSIE, Faculté des Sciences, Pole Sciences et Technologies, France Berikbol T. Torebek --- Al-Farabi Kazakh National University, KazakhstanThis paper is devoted to the problem of existence of global solutions of the time-fractional Burgers equation. For certain initial-boundary problems for the time-fractional Burgers equation, we obtain necessary conditions of existence (in other words, sufficient conditions of nonexistence) of... -
Knysna Estuary health: ecological status, threats and options for the future
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Claassens --- Department of Zoology and Entomology, South Africa RSK Barnes --- Department of Zoology and Entomology, South Africa J Wasserman --- Department of Botany, DST/NRF Research Chair in Shallow Water Ecosystems, South Africa SJ Lamberth --- Fisheries Research and Development, Department of Environment, Forestry and Fisheries, South Africa NAF Miranda --- Department of Botany and Zoology, South Africa L van Niekerk --- Council for Scientific and Industrial Research, South Africa JB Adams --- Department of Botany, DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaThe Knysna Estuary is South Africa's most important estuary in terms of conservation, containing an estimated 42% of all estuarine biodiversity. Despite formal protection the estuary is open access and vulnerable to resource exploitation, development, pollution and freshwater inflow alterations... -
Generalized yamabe equations on riemannian manifolds and applications to Emden-Fowler problems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: David Barilla --- Department of Economics, Italy Giuseppe Caristi --- Department of Economics, Italy Shapour Heidarkhani --- Department of Mathematics, Faculty of Sciences, Iran Shahin Moradi --- Department of Mathematics, Faculty of Sciences, IranIn this paper, we establish the existence of solutions and multiplicity properties for generalized Yamabe equations on Riemannian manifolds. Problems of this type arise in conformal Riemannian geometry, astrophysics, and in the theories of thermionic emission, isothermal stationary gas sphere,... -
The beneficial effects of growth regulators on forage yield and quality of Amaranthus caudatus under different water stress conditions
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Somayeh Farshbaf-Jafari --- , Iran Alireza Pirzad --- , Iran Mehdi Tajbakhsh --- , Iran Kazem Ghassemi-Golezani --- , IranIn order to improve crop productivity, farmers should have strategies for higher quantity and quality of forage without excessive inputs, like irrigation water. In order to assess forage quality of Amaranthus caudatus in response to irrigation levels (irrigation after 70,... -
Isoclinic relative extensions of pairs of Lie algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Arabyani --- , Iran S. Sheikh-Mohseni --- , IranIn the present paper we introduce the concept of isoclinism on the relative central extensions of pairs of Lie algebras, which forms an equivalence relation and we show that each equivalence class contains a stem relative central extension. Also, we... -
On the minimal path cover sets of union of certain graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kazem Khashyarmanesh --- , Iran Mehrdad Nasernejad --- , IranIn this paper, we study minimal path cover sets of union of certain graphs. As consequences, we study max-path ideals with certain heights. -
Iterative algorithm for a family of monotone inclusion problems in cat(0) spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. Dehghan --- , Iran C. Izuchukwu --- , O.T. Mewomo --- , D.A. Taba --- , Iran G.C. Ugwunnadi --- , EswatiniIn this paper, we introduce a new mapping given by a finite family of multivalued monotone mappings in a CAT(0) space. We further propose a modified Halpern-type algorithm for the mapping and prove a strong convergence theorem for approximating a... -
The missing link in ELT materials: A data-driven conceptualisation
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Seyyed Ali Ostovar-Namaghi --- , Iran Saeed Abbasi-Sosfadi --- , IranDespite their mastery over commercially popular textbooks, many EFL learners feel communicatively incompetent in real communicative interactions outside the classroom context. This data-driven study aims at exploring the roots of this educational ill by interviewing nine experienced English language teachers... -
Comparison between Szeged indices of graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kinkar Chandra Das --- , Republic of Korea A.R. Ashrafi --- , I.R. Iran A. Ghalavand --- , I.R. IranThe Szeged index Sz(G) of a simple connected graph G is the sum of the terms nu (e)nv (e) over all edges e = uv of G, where nu (e) is the number of vertices of G lying closer to... -
On the signed Roman k-domination in graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J. Amjadi --- , I.R. Iran S. Nazari-Moghaddam --- , I.R. Iran S.M. Sheikholeslami --- , I.R. Iran L. Volkmann --- , GermanyLet k ≥ 1 be an integer and G be a simple and finite graph with vertex set V (G). A signed Roman k-dominating function (SRkDF) on a graph G is a function f : V (G) → {−1, 1,... -
Nilpotent lie algebras having the Schur multiplier of maximum dimension
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Peyman Niroomand --- , Iran Afsaneh Shamsaki --- , IranLet L be an n-dimensional nilpotent Lie algebra of nilpotency class c with the derived subalgebra of dimension m. Recently, Rai proved that the dimension of Schur multiplier of L is bounded by . In this paper, in virtue of... -
Approximate biflatness and approximate biprojectivity of some Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Sahami --- , IranIn this paper, we study approximate biflatness and approximate biprojectivity of some Banach algebras. In fact, we characterize approximate biflatness of triangular Banach algebras. We also show under which conditions triangular Banach algebras are not approximately biprojective. As an application,... -
Solvability of infinite systems of second-order differential equations with boundary conditions in ℓP
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Mursaleen --- , India E. Pourhadi --- , Sweden R. Saadati --- , IranIn this paper, governed by the fundamental solutions we introduce the Green’s function of the second-order differential equations in general form with respect to boundary conditions and deal with the solvability of the infinite system of second-order differential equations -
Almost Jordan homomorphisms on Fréchet algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Omidi --- , Iran B. Oulfatian --- , Iran A. Zivari-Kazempour --- , IranIn this paper we study the notation of almost Jordan homomorphism between Fréchet algebras. We show that if (A, (p n )) is a Fréchet algebra and T : A → ℂ is a almost Jordan homomorphism, then either... -
On the fourier algebra of certain hypergroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Seyed Mahmoud Manjegani --- , Iran Jafar Soltani Farsani --- , IranWe consider certain classes of hypergroups and address some problems regarding their Fourier algebras, including zero product preserving maps, local derivations and weak amenability. The key tool in our approach is to show that the Fourier algebra of such hypergroups... -
Are reading comprehension ability and its strategies transferable from L1 to L2? Evidence from upper-intermediate EFL learners in Iran
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mohammad Saber Khaghaninejad --- , IranConsidering the fact that being able to read efficiently would be a key tool for academic success, there has been a plethora of research conducted on this skill with a serious focus on the degree to which reading comprehension is... -
Approximate best proximity point sequences for C*λ mappings in strictly convex Banach spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Gabeleh --- , Iran S.P. Moshokoa --- , South Africa O. Olela Otafudu --- , South AfricaLet A and B be nonempty subsets of a Banach space X and T : A → B be a non-self mapping. An approximate sequence of best proximity points for the mapping T is a sequence {xn } in A... -
Some expansions of functions based upon two sequences of hypergeometric polynomials
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohammad Masjed-Jamei --- , Iran H.M. Srivastava --- , CanadaIn this paper, we introduce two series expansions whose basis functions are two sequences of hypergeometric polynomials. We then present a systematic and detailed study of the general properties of each of these series expansions. We consider several illustrative examples... -
Morita equivalence and Cauchy extensions of Hilbert C*-modules
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kourosh Nourouzi --- , Iran Ali Reza --- , IranIn this paper, we show that the Cauchy extensions of C*-algebras and Hilbert C*-modules preserve Morita equivalence of C*-algebras and Hilbert C*- modules, respectively. In particular, we show that the Cauchy extensions of Hilbert C*-modules preserve adjointable, unitary operators and... -
T-quasi continuous modules
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Parastoo Adhami --- , Iran Javad Moghaderi --- , Iran Adnan Tercan --- , TurkeyIn this paper, we investigate the t-quasi continuous property for modules. It is proved that M is t-quasi continuous, if and only if M is a direct sum of a Z 2-torsion module and a quasi-continuos module. Moreover we characterize... -
Facing challenges and drawing strength from adversity: Lived experiences of Tibetan refugee youth in exile in India
Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Kiran Dolly Sapam --- , India Parisha Jijina --- , IndiaThe current study is a qualitative investigation aimed at exploring the lived experiences of Tibetan youth who had escaped to India as unaccompanied minors and since then have been living as refugees in India without their parents. The study attempts... -
On stability and nonstability of systems of functional equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Madjid Eshaghi --- , Iran Bahman Hayati --- , Iran Mahdie Kamyar --- , Iran Hamid Khodaei --- , IranIn this paper, we consider the stability and nonstability results for the following system of functional equations -
Migration and non-breeding season movements of satellite-tracked Levant Sparrowhawk Accipiter brevipes
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Chien-Hung Yang --- , Taiwan Keith Bildstein --- , United States Siranush Tumanyan --- , Armenia Michael McGrady --- , AustriaIn 2013, we satellite-tracked four juvenile Levant Sparrowhawks Accipiter brevipes from their nests in southern Armenia. Mean departure date from summering areas was 30 August. During autumn, birds migrated toward Africa along both the east and west coasts of the... -
Comparative assessment of technical efficiencies of irrigated crop production farms: A case study of the large-scale Kampe-Omi irrigation scheme, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bashir Adelodun --- , Daegu, Korea Abdulwaheed Adedayo Mohammed --- , Ilorin, Nigeria Kamoru Akanni Adeniran --- , Ilorin, Nigeria Sheu-Usman Oladipo Akanbi --- , Ilorin, Nigeria Taofeeq Sholagberu Abdulkadir --- , Ilorin, Nigeria Kyung Sook Choi --- , Daegu, KoreaThe technical inefficiencies of crop production system in terms of large-scale irrigation schemes are major problems attributed to the underperformance of crop farms. Therefore, the aim of this study was to estimate and compare farm-level technical efficiencies of four major... -
Global existence and blow-up for a space and time nonlocal reaction-diffusion equation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ahmed Alsaedi --- , Saudi Arabia Mokhtar Kirane --- , France Berikbol T. Torebek --- , KazakhstanA time-space fractional reaction-diffusion equation in a bounded domain is considered. Under some conditions on the initial data, we show that solutions may experience blow-up in a finite time. However, for realistic initial conditions, solutions are global in time. Moreover,... -
The schur multiplier of a nilpotent Lie algebra with derived subalgebra of maximum dimension
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Farangis Johari --- , Brazil Peyman Niroomand --- , Iran Afsaneh Shamsaki --- , IranWe give a new bound for the dimension of the Schur multiplier of an n-dimensional nilpotent Lie algebra of class c with the derived subalgebra of dimension n − 2. This new bound sharpens the earlier upper bounds on the... -
Translation and feminism in post-Islamic revolution Iran: A sociological approach
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Ali Jalalian Daghigh --- , Malaysia Mohammad Sadegh Kenevisi --- , Iran Jariah Mohd Jan --- , MalaysiaWith the 1979 Islamic revolution in Iran, the pre-revolution secular modernisation process was interrupted and, as believed by the liberal activists, the Islamisation of rules and domination of political Islamic views in the society imposed restrictions on Iranian women. This... -
The predictive power of vocabulary, syntax and metacognitive strategies for L2 reading comprehension
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mohamadreza Sarbazi --- , Iran Reza Khany --- , Iran Leyla Shoja --- , IranThis article reports on an empirical study that investigated the relative predictive powers of metacognitive awareness of reading strategies, L2 lexical knowledge (depth and breadth combined), and syntactic knowledge for reading comprehension performance in English as a foreign language (EFL)... -
Assessing EFL learners’ written performance: The case of task repetition
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Zahra Fakher Ajabshir --- , Iran Fatemeh Poorebrahim --- , IranPrevious second language acquisition (SLA) research on task repetition has mainly addressed oral production, and the contribution of task repetition to various aspects of writing has received scant attention. This study aimed to investigate the accuracy, complexity and fluency of... -
k-tuple restrained domination in graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Michael A. Henning --- , South Africa Adel P. Kazemi --- , IranFor k ≥ 1 an integer, a set S of vertices in a graph G with minimum degree at least k − 1 is a k-tuple dominating set of G if every vertex of S is adjacent to at least... -
Determinants of digital commerce repeat-purchase behaviour in South Africa: A rural citizen perspective
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Vusani Netshirando --- , South Africa Willard Munyoka --- , South Africa Armstrong Kadyamatimba --- , South AfricaDigital commerce (d-commerce) has become a powerful tool for transforming marketplaces in emerging economies across the world. However, in South Africa, d-commerce, especially among the previously disadvantaged rural citizens, is still nascent. This study investigates the effect of facilitating conditions,... -
Modes of innovation used by SMMEs to tackle social challenges in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nokuthula Lukhele --- , South Africa Ogundiran Soumonni --- , South AfricaInnovation has become critical for many countries in the Global South, particularly in responding to challenges such as slow economic growth, primary commodity dependence, and socio-economic inequalities. Since 1996, the National System of Innovation (NSI) approach has been adopted by... -
Internationalising Learning in Higher Education: The Challenges of English as a Medium of Instruction
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Hossein Davari --- , Iran Saeed Nourzadeh --- , Iran -
Partially ordered objects in a topos
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Homayoun Nejah --- , Iran Mojgan Mahmoudi --- , Iran M. Mehdi Ebrahimi --- , IranIn this paper we study the category of partially ordered objects in a topos E . The definition of a partially ordered object or internal poset is taken from [10], ϵ. Mac Lane and I. Moerdijk, Sheaves in geometry and... -
A Zariski topology on integrally closed maximal subrings of a commutative ring
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alborz Azarang --- , IranLet R be a commutative ring and Xi.c (R) denotes the set of all integrally closed maximal subrings of R. It is shown that if R is a non-field G-domain, then there exists S ∈ Xi.c (R) with (S :... -
Multivalued generalized graphic θ-contraction on directed graphs and application to mixed Volterra-Fredholm integral inclusion equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lakshmi Kanta Dey --- , India Hiranmoy Garai --- , India Hemant Kumar Nashine --- , India Can Huu Nguyen --- , VietnamThe purpose of the present work is to introduce a generalized graphic θ-contraction conditions on a family of mappings defined on subsets of a metric space endowed with a set-transitive directed graph, and discuss common fixed point results without considering... -
Frame congruences via subkernels
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Halimeh Moghbeli --- , IranTo study the quotient of algebras, like frames, whose algebraic structures are determined by a partial order, it is often more common to think about sub-kernels of homomorphisms between such algebras. So, in this paper, we first introduce the concept... -
Multiple solutions for a Kirchhoff-type second-order impulsive differential equation on the half-line
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ghasem A. Afrouzi --- , Iran Shapour Heidarkhani --- , Iran Shahin Moradi --- , IranThis paper presents several sufficient conditions for the existence of at least three weak solutions for the following Kirchhoff-type second-order impulsive differential equation -
Artificial light improves productivity of mini-cuttings in a clonal minigarden of Eucalyptus benthamii and E. dunnii
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Enéas Ricardo Konzen --- , Brazil Natália Saudade de Aguiar --- , Brazil Marcio Carlos Navroski --- , Brazil Clenilso Sehnen Mota --- , Brazil Leticia Miranda --- , Brazil Regiane Abjaud Estopa --- , Brazil Erasmo Luis Tonett --- , Brazil Mariane de Oliveira Pereira --- , BrazilEucalypts are economically important worldwide, being largely propagated by clonal means, that is, frequently achieved by mini-cuttings. Regional climatic conditions, however, interfere with this strategy. Southern Brazil, especially in higher altitudes, has a considerable number of cloudy and cold days... -
Philosophy for Children (PFC) as an educational practice to promote peace and non-violent coexistence
Item type: Journal Article • Journal: South African Journal of Philosophy • Authors: Mahdi Ganjvar --- , IranThe purpose of this article is to show the efficiency of “Philosophy for Children” (PFC) in their spiritual development and its impact on promoting peace and coexistence with others, both coreligionists and non-coreligionists. While analysing the concept of spirituality, the... -
Certain properties of Jordan homomorphisms, n-Jordan homomorphisms and n-homomorphisms on rings and Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Taher Ghasemi Honary --- , I.R. IranWe investigate under what conditions n-Jordan homomorphisms between rings are n-homomorphism, or homomorphism; and under what conditions, n-Jordan homomorphisms are continuous. -
Geometry of almost Kenmotsu Hom-Lie algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: L. Nourmohammadifar --- , Iran E. Peyghan --- , Iran S. Uddin --- , Saudi ArabiaIn the present paper, we introduce left-invariant (almost) Kenmotsu structures on Hom-Lie groups (or, almost Kenmotsu Hom-Lie algebras). Also, we present examples of such structures. It is proved that if the Ricci tensor of Kenmotsu Hom-Lie algebras is η-parallel, then... -
Global nonexistence of solutions for Caputo fractional differential inequality with singular potential term
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Moustafa Khirani --- , Algeria Brahim Tellab --- , Algeria Kamel Haouam --- , Algeria Khaled Zennir --- , Saudi ArabiaThis paper is reserved to discuss the existence of a critical exponent of Fujita type for a class of homogeneous Caputo fractional differential inequality with a singular term by using the test function method, to extend the result of global... -
Native English and non-native authors’ utilisation of lexical bundles: A corpus-based study of scholarly public health papers
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Masoomeh Estaji --- , Iran Mohammad Reza Montazeri --- , IranThis study examined the use of lexical bundles in the results and discussion sections of public health research articles (RAs) by comparing the native English writers with Iranian non-native English writers. To this end, four-, five-, and six-word lexical bundles... -
A cross-cultural, cross-contextual study of interactional metadiscourse in academic research articles: An interpersonal approach
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Rajab Esfandiari --- , Iran Zarrin Khatibi --- , IranIn this empirical study, we have focused on the cross-cultural and cross-contextual analysis of interactional metadiscourse in a corpus of 240 English academic research articles published by American and Persian scholars in national and international journals. Drawing on Hyland’s interpersonal... -
Intermediate rings of a class of ordered field valued continuous functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sudip Kumar Acharyya --- , India Rakesh Bharati --- , India Mehdi Parsinia --- , IranIntermediate rings A(X, K) of K-valued continuous functions lying between B(X, K) and C(X, K), defined over a zero dimensional space X, are investigated and studied in this article, here K stands for a countable subfield of ℝ. It is... -
On zr -ideals of C(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: F. Azarpanah --- , Iran R. Mohamadian --- , Iran P. Monjezi --- , IranIn this paper we introduce and study a class of ideals between z-ideals and z°-ideals (=d-ideals) namely zr -ideals. A zr -ideal is a z-ideal which is at the same time an r-ideal (an ideal I in a ring R... -
An upper bound for the index of the center in capable groups with finite cyclic derived subgroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Marzieh Chakaneh --- , Iran Farangis Johari --- , Iran Saeed Kayvanfar --- , Iran Azam Kaheni --- , IranA group G is said to be capable if it occurs as the central factor group H/Z(H) for some group H. Motivated by the results of Isaacs [11], in Proc. Amer. Math. Soc. 129(10) (2001), pp. 2853-2859, we show that... -
Evolution of Iran’s gas turbine sectoral innovation system as a complex product system (CoPS)
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mostafa Safdari Ranjbar --- , Iran Soroush Ghazinoori --- , Iran Manochehr Manteghi --- , IranMany scholars have studied various sectoral innovation systems that are categorized as mass-produced goods, whereas there are only a few previous studies that have investigated complex product systems (CoPS). CoPS are defined as high-cost, engineering, and software-intensive goods, systems, networks,... -
Building on the strengths of African indigenous knowledge and innovation (AIK&I) for sustainable development in Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olawale R. Olaopa --- Imam AbdulRahaman Bin Faisal University, Dammam, Kingdom of Saudi Arabia Oladiran A. Ayodele --- Osun State University, NigeriaThe effective promotion or utilization of the ingenuity from African indigenous knowledge and innovation (AIK&I) has great potential for reducing some of Africa’s interrelated development challenges listed to be addressed in the Sustainable Development Goals (SDGs). Unfortunately, the concept of... -
HIV status disclosure and antiretroviral therapy adherence among children in Masaka region, Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Robert Kairania --- , Kenya Washington Onyango-Ouma --- , Kenya Tom G Ondicho --- , Kenya Godfrey Kigozi --- , UgandaHIV-infected children are now living into adolescence and early adulthood in large numbers due to the availability and increased use of antiretroviral therapy (ART). However, receipt of HIV status disclosure among children remains low. We assessed the association between disclosure... -
Quasi SV-frames and their properties
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mostafa Abedi --- , IranLet P be a prime ideal of the ring of continuous real-valued functions on a completely regular frame L, i.e., L. We study many new results about the residue class domains L/P with an emphasis on determining when... -
Positive filters and links in an ℓ-group
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Pourgholamhossein --- , Iran M.A. Ranjbar --- , IranIn this paper we continue our research about links and link topologies on ℓ-groups and Riesz spaces. We show that in a Riesz space E, a link topology τ is a vector topology, if and only if the link consists... -
Some notes on the paper “On best proximity points of interpolative proximal contractions”
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Gabeleh --- Ayatollah Boroujerdi University, Iran J. Markin --- , USAIn a recent paper [I. Altun and A. Tasdemir, On best proximity points of interpolative proximal contractions, Quaestiones Math. (2020), DOI: 10.2989/16073606.2020.1785576] the authors proved two best proximity point theorems for a new class of non-self mappings, called interpolative Reich-Rus-Ćirić... -
Characterizations of maximal z°-ideals of C(X) and real maximal ideals of q(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Z. Arjmandnezhad --- Shahid Chamran University of ahvaz, Iran F. Azarpanah --- Shahid Chamran University of ahvaz, Iran A.A. Hesari --- Shahid Chamran University of ahvaz, Iran A.R. Salehi --- Petroleum University of Technology, IranIn this paper we first give elementwise characterizations of real maximal ideals and maximal z°-ideals of C(X). Next, using this we characterize the real maximal ideals of the classical ring of quotients q(X) of C(X) and also maximal z°-ideals of... -
Extensions and dilations of module maps
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Massoud Amini --- Tarbiat Modares University, IranWe study completely positive module maps on C*-algebras which are C*-module over another C*-algebra with compatible actions. We extend several well known dilation and extension results to this setup, including the Stinespring dilation theorem and Wittstock, Arveson, and Voiculescu extension... -
Nearly para-Kähler geometry on Lie groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Leila Nourmohammadifar --- Arak University, Iran Esmaeil Peyghan --- Arak University, IranIn this paper, we introduce left-invariant (strict) nearly para-Kaähler structures on Lie groups (nearly para-Kähler Lie algebras) and present some properties of them. We prove the existence of a unique connection in terms of the characteristic connection on these Lie... -
Functional analysis of stance nouns in English Language Teaching research articles
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Seyed Foad Ebrahimi --- Islamic Azad University, Iran Abdollah Mohsenzadeh --- Islamic Azad University, IranThe study of stance as a linguistic feature that conveys the attitude of writers to their materials and readers has become an important research area. The head noun in noun complement structures is one of the overlooked means of stance... -
The Laplace transform on the rearrangement of invariant spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: René Erlin Castillo --- Departamento de Matemáticas Universidad Nacional de Colombia, Colombia A. Ricardo Miranda B. --- Departamento de Matemáticas Universidad Nacional de Colombia, Colombia Julio C. Ramos-Fernández --- Universidad Distrital Francisco José de Caldas, ColombiaIn a self contained presentation we study the boundedness of the Laplace transform on the rearrangement invariant Lebesgue Lp -space, we use real analysis techniques provided by convex analysis and the K-method. -
On multipliers of pairs of Lie superalgebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Hesam Safa --- University of Bojnord, IranWe study the notion of the Schur multiplier of a pair (N, L) of Lie superalgebras and obtain some upper bounds concerning dimensions. Moreover, we characterize the pairs of finite dimensional (nilpotent) Lie superalgebras for which -
Stone representation theorem for Boolean algebras in the topos M
Set Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mojgan Mahmoudi --- Shahid Beheshti University, Iran Sara Sepahani --- Shahid Beheshti University, IranThe famous Stone representation theorem for Boolean algebras represents them as subalgebras of the powerset Boolean algebras. In this paper, we consider a Stone type representation for Boolean algebras in the functor topos Set M , for a monoid... -
Relationship between hypothyroidism and gestational diabetes mellitus: a retrospective cohort study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Mahmood Moosazadeh --- Mazandaran University of Medical Sciences, Iran Adeleh Bahar --- Mazandaran University of Medical Sciences, Iran Ramin Yeganeh Sarhangi --- Mazandaran University of Medical Sciences, Iran Mohsen Aarabi --- Mazandaran University of Medical Sciences, Iran Mohammad Khademloo --- Mazandaran University of Medical Sciences, Iran -
A new lower bound on the total domination number of a graph
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Majid Hajian --- Shahrood University of Technology, Iran Michael A. Henning --- University of Johannesburg, South Africa Nader Jafari Rad --- Shahed University, IranA set S of vertices in a graph G is a total dominating set of G if every vertex in G is adjacent to some vertex in S. The total domination number, γt (G), is the minimum cardinality of a... -
Attitude of health care workers to patients and colleagues infected with human immunodeficiency virus
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Ayebo E Sadoh --- Institute of Child Health, University of Benin, Wilson E Sadoh --- Department of Child health, College of Medical Sciences, University of Benin, Adeniran Olubukola Fawole --- Department of Obstetrics and Gynaecology, College of Medicine, University of Ibadan, Nigeria Ayo Oladimeji --- Federal Medical Centre, Nigeria Oladapo Sotiloye --- Federal Medical Centre, NigeriaDiscrimination against persons living with HIV/AIDS in hospital settings has been documented. This study examined the attitude of health care workers (HCWs) to nurses, doctors and patients infected with HIV. A total of 345 respondents selected by multistage sampling techniques... -
Public perceptions about HIV/AIDS and discriminatory attitudes toward people living with acquired immunodeficiency syndrome in Iran
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Ebrahim Masoudnia --- , , IranNegative and discriminatory attitudes towards people living with HIV/AIDS (PLWHA) are one of the biggest experienced challenges by people suffering from HIV, and these attitudes have been regarded as a serious threat to the fundamental rights of all infected people... -
The relationship of a weight-efficacy lifestyle with anthropometric indices among middle-aged Iranian women
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Mahbobeh Kianfar --- Ahvaz Jundishapur University of Medical Sciences, Iran Poorandokht Afshari --- Ahvaz Jundishapur University of Medical Sciences, Iran Parvin Abedi --- Ahvaz Jundishapur University of Medical Sciences, Iran Mohammadhossein Haghighizadeh --- Ahvaz Jundishapur University of Medical Sciences, IranBackground: Overweight or obese middle-aged women are at a greater risk of chronic diseases. This study aimed to evaluate the relationship between a weight-efficacy lifestyle and anthropometric indices in middle-aged women. -
Optimising the rate and stages of application of nitrogen fertiliser for stevia under greenhouse conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Alireza Eslami-Firouzabadi --- Shahrekord University Faculty of Agriculture, Islamic Republic of Iran Mojtaba Karimi --- Shahrekord University Faculty of Agriculture, Islamic Republic of Iran Ali Abbasi-Surki --- Shahrekord University Faculty of Agriculture, Islamic Republic of Iran Alireza Shafeinia --- Ramin Agricultural and Natural Resources University, Islamic Republic of Iran Fatemeh Derikvand-Moghadam --- Ramin Agricultural and Natural Resources University, Islamic Republic of IranNitrogen (N) is the nutrient most used by crop producers and its application may affect the N use efficiency in crop production. The present study was conducted in order to determine the optimum N fertiliser rate and application stages (S)... -
Lie triple centralizers on generalized matrix algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Behrooz Fadaee --- University of Kurdistan, Iran Hoger Ghahramani --- University of Kurdistan, Iran Wu Jing --- Fayetteville State University, USAIn this article, we introduce the notion of Lie triple centralizer as follows. Let be an algebra, and be a linear mapping. We say that ϕ is a Lie triple centralizer whenever for all . Then we characterize the general... -
Representation theorems for closed ideals of CB (X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alireza Olfati --- Yasouj University, IranLet CB (X) be the Banach algebra of all continuous bounded ℂ-valued functions on a completely regular Hausdorff space X equipped with the supremum norm. We provide representation theorems for arbitrary closed ideals of CB (X). Indeed, for a closed... -
A family of congruent number elliptic curves of rank three
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lorenz Halbeisen --- , Switzerland Norbert Hungerbühler --- , Switzerland Arman Shamsi Zargar --- University of Mohaghegh Ardabili, IranRecent progress in the theory of Heron triangles and their elliptic curves led to new families of congruent number elliptic curves with rank at least two. Based on these results, we derive a parametric family of congruent number elliptic curves... -
On exactness and homology of hyperchain complexes
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Asieh Pourhaghani --- Ferdowsi University of Mashhad, Iran Hamid Torabi --- Ferdowsi University of Mashhad, IranIn this paper we define the concepts of a “strict morphism” as a suitable map between geometric spaces (as a generalization of hyperstructures), and its kernel. Then we introduce the concepts of a “quotient geometric space”, an “exact sequence”, an... -
Maximal subrings of classical integral domains
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Alinaghizadeh --- Shahid Chamran University of Ahvaz, Iran A. Azarang --- Shahid Chamran University of Ahvaz, IranIt is shown that if R is an integral domain with |R| = 2ʿ, then either R has a maximal subring or R has a prime ideal P which is not a maximal ideal of R, Char(R/P) = Char(R) and... -
Connectedness modulo an ideal; a characterization theorem
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Koushesh --- Isfahan University of Technology, IranLet X be a topological space and let be an ideal of subsets of X. The space X is called connected modulo if there is no continuous mapping f : X → [0, 1] which is 2-valued modulo in the... -
The innovation capability model in higher education: A structural equation modelling approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Fatemeh Ghardashi --- Sabzevar University of Medical Sciences, Iran Maryam Yaghoubi --- Baqiyatallah University of Medical Sciences, Iran Ehsan Teymourzadeh --- Baqiyatallah University of Medical Sciences, Iran Mohammadkarim Bahadori --- Baqiyatallah University of Medical Sciences, Iran Mahmood Salesi --- Baqiyatallah University of Medical Sciences, IranInnovation is the driving force of the knowledge-based economy. The maintenance and sustainability of this innovation depend on the ability to innovate. The present study was a combination design with a structural equation model approach. First, using a qualitative method,... -
A generalization of Taketa’s theorem on M-groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Zeinab Akhlaghi --- Amirkabir University of Technology (Tehran Polytechnic), IranLet G be a finite group. We prove the solvability of G, by assuming that the average degree of non-monomial irreducible characters in Irr(G) is less than 5/2. The bound is sharp. -
On dual-classical Krull dimension of rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sayed Malek Javdannezhad --- Shahid Rajaee Teacher Training University, Iran Sayedeh Fatemeh Mousavinasab --- Shahid Chamran University of Ahvaz, Iran Nasrin Shirali --- Shahid Chamran University of Ahvaz, IranAn ideal L of a ring R is said to be strongly hollow (briefly, sh-ideal) if L ⊆ A + B implies that either L ⊆ A or L ⊆ B, for every pair A and B of ideals of... -
Effect of an educational intervention based on the Theory of Planned Behaviour in type 2 diabetic patients at a foot and eye care practice
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: B Pezeshki --- School of Medicine, Fasa University of Medical Sciences, Iran S Orangi --- School of Health, Fasa University of Medical Sciences, Iran SM Kashfi --- School of Health, Shiraz University of Medical Sciences, Iran P Afzali Harsini --- School of Health, Kermanshah University of Medical Sciences, Iran F Mohammadkhah --- Ramsar School of Nursing, Babol University of Medical Sciences, Iran A Khani Jeihooni --- School of Health, Shiraz University of Medical Sciences, Iran -
On central automorphisms of finite p-groups of class 2
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Shabani-Attar --- Payame Noor University, IranLet G be a finite p-group and let Aut c (G) be the group of all central automorphisms of G. Let be the set of all central automorphisms of G fixing Z(G) elementwise. For a finite p-group of class 2,... -
Almost clean elements in C(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: R. Mohamadian --- Shahid Chamran University of Ahvaz, IranAn element a in a ring R is called almost clean if a can be written as a = r + e, where r is a regular (non zero-divisor) element and e is an idempotent. It is well known that... -
-
Equivalent version of Huppert’s conjecture for codegrees of K 3-groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohsen Ghasemi --- Urmia University, Iran Somayeh Hekmatara --- Urmia University, IranFor a character χ of a finite group G the number cod(χ) = |G: Ker(χ)|/χ(1) is called the codegree of χ. In this note, we verify the equivalent version of Huppert’s conjecture for K 3 -groups. -
Cause-effect patterns in the discussion sections of articles in language studies journals: The discourse of scientific explanation across language sub-disciplines
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mohammad Rahimi --- Islamic Azad University, Iran Amin Karimnia --- Islamic Azad University, Iran Hamed Barjesteh --- Islamic Azad University, IranOne of the basic goals of academic research is to explain the phenomena that researchers observe through causal relations. From a discursive perspective, however, how cause-effect patterns (CEPs) are reflected in academic writing is a major question to be investigated... -
Depth of C(X)-modules
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: F. Azarpanah --- Shahid Chamran University of ahvaz, Iran A.A. Hesari --- Shahid Chamran University of ahvaz, Iran A.R. Salehi --- Petroleum University of Technology, IranIt is shown that the depth of every module over C(X), the ring of all real valued continuous functions on a topological space X, is at most 1. This result is proved for modules over rings of a much more... -
A note on J -spaces and relatively connected subsets
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Simo S. Mthethwa --- University of KwaZulu-Natal, South Africa Ali Taherifar --- Yasouj University, IranIn this note we present an investigation of J -spaces and other types of spaces related to J -spaces. We characterise these spaces using the notion of relatively connected subsets. For a completely regular J -space X, we give a... -
Gradient estimates of a nonlinear Lichnerowicz equation under the Finsler-geometric flow
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shahroud Azami --- Imam Khomeini International University, IranLet (Mn , F(t), m), t ∈ [0, T], be a compact Finsler manifold with F(t) evolving by the Finsler-geometric flow , where g(t) is the symmetric metric tensor associated with F, and h(t) is a symmetric (0, 2)-tensor. In... -
On mixed metric dimension in subdivision, middle, and total graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ali Ghalavand --- Ferdowsi University of Mashhad, Iran Sandi Klavžar --- University of Ljubljana, Slovenia Mostafa Tavakoli --- Ferdowsi University of Mashhad, Iran Ismael G. Yero --- Universidad de Cádiz, SpainLet G be a graph and let S(G), M(G), and T(G) be the subdivision, the middle, and the total graph of G, respectively. Let dim(G), edim(G), and mdim(G) be the metric dimension, the edge metric dimension, and the mixed metric... -
A practical framework for technological learning in developing countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Maryam Nozari --- Islamic Azad University, Iran Reza Radfar --- Islamic Azad University, Iran Soroush Ghazinoori --- Allameh Tabatabaee University, IranThe important role of technological learning in the success of enterprises, especially in developing countries, is undeniable. Besides that, the complex nature of learning requires a comprehensive framework. So, developing countries need to have a learning strategy that can help... -
Effect of group cognitive behavioural therapy on self-efficacy and anthropometric indices among overweight and obese postpartum women
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Arezo Jamshidi --- Ahvaz Jundishapur University of Medical Sciences, Iran Parvin Abedi --- Ahvaz Jundishapur University of Medical Sciences, Iran Najmeh Hamid --- Shahid Chamran University of Ahvaz, Iran Mohammadhossein Haghighizadeh --- School of Health, Iran -
Resilience in Iranian adolescents during the COVID-19 pandemic: Psychometric Evaluation of the Connor-Davidson Resilience Scale
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Hamid Sharif-Nia --- Addiction Institute, Mazandaran University of Medical Sciences, Iran Long She --- Sunway University, Malaysia Erika Sivarajan Froelicher --- University of California San Francisco, USA Gökmen Arslan --- Mehmet Akif Ersoy University, Turkey Sima Hejazi --- North Khorasan University of Medical Sciences, Iran Fatemeh Khoshnavay Fomani --- Tehran University of Medical Sciences, Iran Daniyal Kohestani --- Iran University of Medical Science, Iran Elham Akhlaghi --- Iran University of Medical Sciences, IranBackground: Resilience is a measure of the ability to cope with stress and the accurate measurement of it is critical. This study aimed to translate and evaluate the psychometric properties of the Connor-Davidson Resilience Scale in Iranian adolescents during the... -
Solutions of an anisotropic elliptic problem involving nonlinear terms
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Razani --- Imam Khomeini International University, Iran T. Soltani --- Imam Khomeini International University, IranUsing variational methods, the existence and multiplicity of weak solutions for the following Neumann anisotropic problem -
Existence and regularity results for a degenerate elliptic nonlinear equation on weighted Sobolev spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohsen Alimohammady --- University of Mazandaran, Iran Carlo Cattani --- University of Tuscia, Italy Morteza Koozehgar Kalleji --- Arak University, IranThis paper deals with the existence of many solutions a degenerate weighted elliptic equation which its the number of solutions depend on degeneracy term a i.e., the number of subdomains of Ω\a −1(0) whose boundary is made by submanifolds with... -
On EP matrices, partial isometry matrices and their numerical range
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Gholamreza Aghamollaei --- Shahid Bahonar University of Kerman, Iran Mahdiyeh Mortezaei --- Shahid Bahonar University of Kerman, Iran Mohammad Ali Nourollahi --- , IranIn this paper, some properties of the numerical range of some well-known generalized inverses of matrices, such as Moore-Penrose inverse, Drazin inverse, DMP inverse and CMP inverse, are investigated. In particular, an identification of EP matrices is given via the... -
On the product of vanishing classes in a finite group
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Neda Ahanjideh --- Shahrekord University, IranLet G be a finite group. An element g ∈ G is called a vanishing element of G if there exists an irreducible complex character χ of G such that χ(g) = 0. The conjugacy class of G containing a... -
Two classes of operators related to positively limited sets on Banach lattices
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Halimeh Ardakani --- Payame Noor University, Iran Jin Xi Chen --- Southwest Jiaotong University, ChinaThis paper is devoted to two classes of operators related to positively limited sets on Banach lattices, which we call positively limited operators and positively limited completely continuous operators, respectively. We study the relationship between these two classes of operators... -
On the largest regular subring of C(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Adelzadeh --- Shahid Chamran University of ahvaz, Iran F. Azarpanah --- Shahid Chamran University of ahvaz, Iran R. Mohamadian --- Shahid Chamran University of ahvaz, IranWe call a real-valued function f on a topological space X a locally constant if each point x ∈ X has a neighborhood on which f is constant. The set of all locally constant functions f: X → ℝ is... -
Some new properties of geometrically-convex functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shigeru Furuichi --- Nihon University, Tokyo, Japan Nicuşor Minculete --- University of Braşov, Romania Hamid Reza Moradi --- Islamic Azad University, Iran Mohammad Sababheh --- Princess Sumaya University For Technology, JordanThe class of geometrically convex functions is a rich class that contains some important functions. In this paper, we further explore this class and present many interesting new properties, including fundamental inequalities, supermultiplicative type inequalities, Jensen-Mercer inequality, integral inequalities, and... -
Lax pullback complements in partial morphism categories
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S.N. Hosseini --- Mahani Mathematical Research Center, Shahid Bahonar University of Kerman, Iran L. Yeganeh --- Mahani Mathematical Research Center, Shahid Bahonar University of Kerman, IranThe goal of this article is to characterize the lax pullback complement of a given partial morphism along a total morphism, in an -partial morphism category, where is an exponentiable stable system. To achieve this, we first show that if... -
General decay and blow up of solutions for a plate viscoelastic p(x)-Kirchhoff type equation with variable exponent nonlinearities and boundary feedback
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jorge Ferreira --- Federal Fluminense University, Brazil Erhan Pişkin --- Dicle University, Turkey Mohammad Shahrouzi --- Jahrom University, IranIn this paper, we consider a plate viscoelastic p(x)–Kirchhoff type equation with variable-exponent nonlinearities of the form -
The number of distinguishing colorings of a Cartesian product graph
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Saeid Alikhani --- Yazd University, Iran Mohammad H. Shekarriz --- Yazd University, IranA vertex coloring is called distinguishing if the identity is the only automorphism that can preserve it. The distinguishing threshold θ(G) of a graph G is the minimum number of colors k required that any arbitrary k-coloring of G is... -
Level of food safety knowledge among hospitality professionals: an empirical investigation from India
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Patita Paban Mohanty --- Siksha’ O’ Anusandhan University, India Sunil Tiwari --- School of Business Studies, Central University of Kerala, India Hiran Roy --- International School of Hospitality and Tourism Management, Fairleigh Dickinson University, Canada Rupesh Bhavsar --- Institute of Hotel Management, MGM University, IndiaHospitality professionals with insufficient food safety knowledge (FSK) poses a major risk to food safety in their respective organisations. This study aims to investigate the level of food safety knowledge of hospitality professionals, as well as the attributes influencing food... -
Planar polynomial of the graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Behnaz Tolue --- Hakim Sabzevari University, Iran Alireza Doostabadi --- University of Zabol, Iran Sayed Masih Ayat --- University of Zabol, IranIn this paper, the planar polynomial of a graph is introduced and some of its properties are discussed. The planar polynomial of the graph G is real-rooted if and only if G is planar. This polynomial is not EE-invariant. Some... -
Conformally related invariant (α, β)-metrics on homogeneous spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Azar Fatahi --- University of Isfahan, Iran Masoumeh Hosseini --- University of Isfahan, Iran Hamid Reza Salimi Moghaddam --- University of Isfahan, IranIn this paper, we give the flag curvature formula of general (α, β)-metrics of Berwald type. We study conformally related (α, β)-metrics, especially general (α, β)-metrics that are conformally related to invariant (α, β)-metrics. Also, a necessary and sufficient condition... -
Exploring disciplinary authors’ conflict negotiation in published research article discussions
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mahsa Alinasab --- Urmia University, Iran Mehdi Sarkhosh --- Urmia University, IranResearch article (RA) discussions require authors to underline new research findings through negotiating conflict, known as academic conflict (AC), with a specific strand of literature. However, AC has been either inadequately represented in particular disciplines, or left unnoticed across disciplines... -
Implementing open innovation in a closed biopharmaceutical industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sepehr Ghazinoory --- Tarbiat Modares University, Iran Maryam Nozari --- Islamic Azad University, Iran Hadi Siadati --- Islamic Azad University, IranOver the last decade, biopharmaceuticals’ research, development, production, and sale have involved high risks and costs for companies. Hence companies have moved toward reaping the benefits of open innovation models. Open innovation is a paradigm that forces the company to... -
Evaluating the role of combustible renewable and waste in reducing greenhouse gas emissions in the long run in Malaysia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Jayanthi R Alaganthiran --- Universiti Malaya, Malaysia Santha Chenayah --- Universiti Malaya, Malaysia Rajah Rasiah --- Universiti Malaya, MalaysiaMalaysia has been struggling to effectively manage waste which accounts for a substantial amount of greenhouse gases. Thus, the objective of this study was to identify whether renewable energy from combustible renewable and waste could significantly reduce the total greenhouse... -
On (k, ℓ)-locating colorings of graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Michael A. Henning --- University of Johannesburg, South Africa Mostafa Tavakoli --- Ferdowsi University of Mashhad, IranLet c: V(G) → {1, . . . , ℓ} = [ℓ] be a proper vertex coloring of G and C(i) = {u ∈ V(G): c(u) = i} for i ∈ [ℓ]. The k-color code rk (v|c) of vertex v... -
Characterizing some finite groups by the average order
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Z. Akhlaghi --- Amirkabir University of Technology (Tehran Polytechnic), Iran Behrooz Khosravi --- Amirkabir University of Technology (Tehran Polytechnic), Iran Ashkan ZareZadeh --- Amirkabir University of Technology (Tehran Polytechnic), IranThe average order of a finite group G is denoted by o(G). In this note, we classify groups whose average orders are less than o(S 4), where S 4 is the symmetric group on four elements. Moreover, we prove that... -
Total coalitions in graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Saeid Alikhani --- Yazd University, Iran Davood Bakhshesh --- University of Bojnord, Iran Hamidreza Golmohammadi --- Novosibirsk State University, RussiaWe define a total coalition in a graph G as a pair of disjoint subsets A 1,A 2 ⊆ A that satisfy the following conditions: (a) neither A 1 nor A 2 constitutes a total dominating set of G, and... -
Indicators of grassroots innovations in Iran: A mixed method study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Akram Ghadimi --- , Marzieh Saviz --- Department of Psychology and Education, University of Tehran, Tehran, Iran,Grassroots innovations are bottom-up solutions for solving problems that meet local needs and take into account their interests and values. The main purpose of this study is to identify the indicators of grassroots innovations in Iran. This research is based... -
Grazing effects on forage quality parameters of three rangeland species in arid regions of Semnan, Iran
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Milad Kamiziani --- University of Kurdistan, Iran Shima Nikoo --- Semnan University, Iran Hamed Joneidi Jafari --- University of Kurdistan, Iran Fateme Naghizade Asl --- Gorgan University of Agricultural Sciences and Natural Resources, IranForage quality determines livestock production and overgrazing results in significant changes in forage quality of rangeland species. This study aimed to compare the effects of overgrazing on forage quality of Artemisia sieberi, Zygophyllum eurypterum and Stipa barbata as dominant species... -
Gibberellic and salicylic acids improve seedling emergence, early growth and some physiological characteristics of Phaseolus vulgaris L. under soil compaction
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Hamid Reza Eisvand --- Lorestan University, Iran Hadis Nasrollahi --- Lorestan University, Iran Feizollah Shahbazi --- Lorestan University, Iran Mohammad Feizian --- Lorestan University, Iran Donald L Smith --- McGill University, CanadaHeavy soil compaction and crusting adversely affect the percentage and speed of seedling emergence, particularly in dicotyledonous epigeal plants. This study aimed to evaluate ways to cope with this phenomenon in kidney bean through hormonal priming. A factorial experiment was... -
Lebesgue-Fourier algebras on coset spaces and approximate amenability
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maryam Esfandani --- Isfahan University of Technology, Iran Rasoul Nasr Isfahani --- Isfahan University of Technology, IranLet K be a compact subgroup of a locally compact group G. In this work, we initiate an investigation of the Lebesgue-Fourier algebra S 1 A(G/K) on the coset space G/K with pointwise multiplication; after some general results on the... -
A study of a Kirchhoff-type p(x)-triharmonic problem involving two parameters
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Xiumei Han --- Shandong University of Science and Technology, P.R. China Zohreh Naghizadeh --- University of Science and Technology of Mazandaran, Iran Binlin Zhang --- Shandong University of Science and Technology, P.R. ChinaOur most significant aim is to guarantee multiplicity results for a Kirchhoff-type problem involving two parameters and p(x)-triharmonic operator subject to the Navier boundary condition. More precisely, two critical point theorems are exploited to attain main theorems. -
Exploring participatory scenario planning for sustainable urban tourism development
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Miranda Cornelisse --- Rotterdam University of Applied Sciences, The Netherlands Arjen van Klink --- Rotterdam University of Applied Sciences, The NetherlandsThis viewpoint article explores the potential of multistakeholder participatory scenario planning (PSP) as a tool to foster a sustainable visitor economy in underprivileged neighbourhoods. Feijenoord, a district in Rotterdam, is such an area. While the visitor economy offers economic benefits,... -
Phosphorus sorption kinetics in calcareous soils of selected arid and semi-arid toposequences and its relationship with plant growth
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Jafari --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran H. Shariatmadari --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran Y. Rezainejad --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Iran Sh. Ghalami --- Department of Soil Science, College of Agriculture, Isfahan University of Technology, IranAn array of kinetic equations has been used to describe time-dependent sorption of P by soils. We investigated P sorption kinetics in calcareous soils at upper-, mid-, and lowerslope positions of two arid and two semi-arid landscapes and its relationship... -
Best approximation theorems via relatively u-continuous and Jaggi nonexpansive mappings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Gabeleh --- Ayatollah Boroujerdi University, Iran R. Gholipour --- Yazd University, Iran H. Mazaheri --- Yazd University, Iran S.P. Moshokoa --- Tshwane University of Technology, South AfricaIn this paper, we introduced a new type of cyclic (noncyclic) mappings, called Jaggi relatively nonexpansive mappings and use to investigate the existence of best proximity points (pairs) in the framework of reflexive (strictly convex) Banach spaces by using a... -
On a variant of extremal disconnectedness in locales and spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba Dube --- University of South Africa, South Africa Ali Taherifar --- Yasouj University, IranWe study a variant of extremal disconnectedness in frames, defined by requiring that any two disjoint open sublocales should be separable by disjoint open sublocales each of which is the interior of some zero-sublocale. In spaces, this notion was recently... -
On elliptic curves assigned to a pair of right triangles with an equal hypotenuse
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Arman Shamsi Zargar --- University of Mohaghegh Ardabili, Iran Seiji Tomita --- Tokyo Software Company (Inc.), JapanConsider a pair of right triangles with an equal hypotenuse. This turns out to solve the diophantine system of equations a 2 + b 2 = c 2 + d 2 = e 2 in integers. To this system we... -
Restaurant adoption of social media: an extension of the technology, organisation and environment model
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Rora Puspita Sari --- Padjadjaran University, Indonesia Dika Jatnika --- Padjadjaran University, Indonesia Kurnia Khafidhatur Rafiah --- Padjadjaran University, Indonesia Desty Hapsari Kirana --- Padjadjaran University, Indonesia Fajar Kusnadi Kusumah Putra --- Politeknik Pariwisata NHI Bandung, IndonesiaThe aims of this study examine factors that affect restaurants’ adoption of social media platforms by utilising the technological, organizational, and environmental (TOE) framework, and market orientation and marketing intelligence from the business perspectives. This article utilises the TOE framework... -
Unlocking Northern Cyprus: innovations in destination management for enhanced tourism experiences
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sima Rahimizhian --- Eastern Mediterranean University, Türkiye Foad Irani --- Final International University, TürkiyeThe tourist sector is currently one of those that has paved the way in the application of intelligent communication and information technology. Intelligent information systems can significantly contribute to the continued growth of the tourist business, particularly virtual tourism, given... -
A critical point approach to non-local complex systems of fractional discrete equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Massimiliano Ferrara --- University Mediterranea of Reggio Calabria, Italy Shapour Heidarkhani --- Razi University, Iran Shahin Moradi --- Razi University, IranDiscrete fractional equations have emerged across various fields such as science, engineering, economics, and finance to better capture the characteristics of non-local complex systems. In this discussion, we explore the existence of at least three unique solutions for discrete fractional... -
Complementary bounds for the numerical and spectral radii
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Fuad Kittaneh --- The University of Jordan, Jordan Hamid Reza Moradi --- Islamic Azad University, Iran Mohammad Sababheh --- Princess Sumaya University for Technology, JordanLet denote the C* –algebra of all bounded linear operators on a Hilbert space . Among other results, we show that if are nonzero, then -
Geometric mean Sylow numbers of nonsolvable groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Chimere Stanley Anabanti --- University of Pretoria, South Africa Alireza Khalili Asboei --- Farhangian University, IranLet G be a finite group. We write gsn(G) for the geometric mean Sylow number of G. The Fitting subgroup of G is denoted by F(G). It was recently proved that if gsn(G) < , then G is solvable. In... -
Banaschewski compactifications via special rings of functions in the absence of the Axiom of Choice
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alireza Olfati --- Yasouj University, Iran Eliza Wajch --- University of Siedlce, PolandFor a topological space is the ring of all continuous real functions f on X such that, for every real number ϵ > 0, there exists a countable clopen cover of X such that the oscillation of f on each... -
A note on the construction of non-spatial frames
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Abolghasem Karimi Feizabadi --- Islamic Azad University, Iran Mahmoud Manafi --- Berlin College of Business and Technology (BCBT), Germany Inderasan Naidoo --- University of South Africa (UNISA), South AfricaWe introduce a new type of ideal, which we term a ζ-ideal (zeta-ideal), on a topological space. We present examples of ζ-ideals and study their properties. ζ-Ideals are shown to provide a new paradigm for constructing non-spatial frames. Beyond that,... -
The Liezation of Leibniz superalgebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Behrouz Edalatzadeh --- Razi University, Iran Gelareh Eghbali Kalhor --- Razi University, Iran Ali Reza Salemkar --- Shahid Beheshti University, IranThe Schur SLie-multiplier and SAb-multiplier of Leibniz superalgebras are the Baer invariants of Leibniz superalgebras with respect to the subcategory of Lie and abelian superalgebras, respectively. In this paper, we investigate some connections between these invariants and apply them to... -
Developing an academic word list for mathematics research articles: A corpus-based approach
Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies • Authors: Mina Mahdevar --- Kerman Institute of Higher Education, Iran Mohammadreza Valizadeh --- Agri Ibrahim Çeçen University, Türkiye Ismail Xodabande --- Kharzmi University, IranIn the burgeoning field of English for specific purposes (ESP), understanding the vocabulary demands of specialised disciplines is crucial for both language instruction and academic success. This study specifically addresses the gap in vocabulary resources for the mathematics discipline, an... -
On the sum of annihilators in nearrings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nastaran Naseripour --- Shahrood University of Technology, Iran Ebrahim Hashemi --- Shahrood University of Technology, Iran Mahsa Paykanian --- Shahrood University of Technology, IranA ring is termed a left IN-ring if the right annihilator of the intersection of any two left ideals is equal to the sum of their right annihilators. As a generalization of left IN-ring, a ring is called a right... -
Generalized A-numerical radius inequalities in semi-Hilbert spaces through the angle between two vectors
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mojtaba Bakherad --- University of Sistan and Baluchestan, IranThis paper presents several inequalities related to the A-numerical radius in the context of semi-Hilbert space operators. By integrating modern techniques from operator theory and functional analysis, we derive new inequalities for the A-numerical radius that emphasize the unique characteristics... -
Developing and validating a training package for the provision of telephone crisis intervention services to children and adolescents at risk of suicide
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Maedeh Parvizi --- Iran University of Medical Sciences, Iran Zahra Shahrivar --- Tehran University of Medical Sciences, Iran Nasrin Dodangi --- Psychosis Research Center, University of Social Welfare and Rehabilitation Sciences, Iran Salman Ghaderi --- Social Emergency Center of the Welfare Organization, Iran Saeid Norouzi --- Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Iran Elham Salari --- Tehran University of Medical Sciences, Iran Mojgan Khademi --- Shahid Beheshti University of Medical Sciences, Iran Fariba Arabgol --- Shahid Beheshti University of Medical Sciences, Iran Javad Mahmoudi-Gharaei --- Tehran University of Medical Sciences, IranBackground: Telephone crisis intervention is a readily available and discreet method through which troubled youths can seek assistance. -
On SVc -Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amir Veisi --- Yasouj University, Iran Zahra Keshtkar --- Yasouj University, IranWe say that a topological space X is an SVc-space if Cc (X) is an SV - ring, that is, is a valuation ring for every prime ideal P of Cc (X). The purpose of this paper is to study... -
Generalized Ƶ-solitons on Perfect Fluid Spacetimes in f(r, T)-Gravity
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shahroud Azami --- Imam Khomeini International University, Iran Uday Chand De --- University of Calcutta, India Mehdi Jafari --- Payame Noor University, IranThis research paper aims to investigate the properties of almost generalized Ƶ-solitons and almost gradient generalized Ƶ-solitons on perfect fluid spacetimes within f(r, T)-gravity. Initially, we derive some properties of the potential vector field associated with the almost gradient generalized... -
Feasibility, challenges, and lessons learned in implementing antiretroviral adherence club models in Northern Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ramadhani Abdul --- Amsterdam Institute for Global Health and Development, University of Amsterdam, the Netherlands Lukas Van Duffel --- Doctors with Africa Collegio Universitario Aspiranti Medici Missionari (CUAMM), Tanzania Giulia Martelli --- Doctors with Africa Collegio Universitario Aspiranti Medici Missionari (CUAMM), Tanzania Edda Ndyamukama Joel --- Doctors with Africa Collegio Universitario Aspiranti Medici Missionari (CUAMM), Tanzania Joyce Zacharia Misesemo --- Doctors with Africa Collegio Universitario Aspiranti Medici Missionari (CUAMM), Tanzania Tobias F. Rinke de Wit --- Amsterdam Institute for Global Health and Development, University of Amsterdam, the Netherlands Sayoki Mfinanga --- National Institute for Medical Research, Tanzania Anton Pozniak --- Chelsea and Westminster Hospital NHS Foundation Trust, United Kingdom Sabine Hermans --- Amsterdam Institute for Global Health and Development, University of Amsterdam, the NetherlandsIntroduction: In Tanzania, nearly 1.6 million adults were living with HIV in 2022, with an HIV prevalence rate of 4.4%. We piloted community health worker-managed adherence clubs in two clinics in Shinyanga, Tanzania. We previously demonstrated better stability in care... -
Strong domination number of graphs from primary subgraphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Saeid Alikhani --- Yazd University, Iran Nima Ghanbari --- University of Bergen, Norway Michael A. Henning --- University of Johannesburg, South AfricaA set D of vertices is a strong dominating set in a graph G, if for every vertex x ∈ V (G) \ D there is a vertex y ∈ D with xy ∈ E(G) and deg(x) ≤ deg(y). The... -
The role of STI governance in increasing the efficiency of the University of Tehran Science and Technology Park with an emphasis on its internationalization
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bahareh Heidary --- Governance Faculty, University of Tehran, Tehran, Iran, Maryam Afkhami --- Governance Faculty, University of Tehran, Tehran, Iran,The governance of science, technology, and innovation (STI) is increasingly recognized as a key driver for international collaboration and competitiveness. To ensure effective STI governance, it is essential to understand internationalization parameters, their impact, and the strategic frameworks that enable... -
Dunford-Pettis elements of Banach modules and their applications over commutative Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Fereshteh Hamidi Dastjerdi --- Yazd University, Iran S.M. Sadegh Modarres --- Yazd University, Iran Mehdi Nemati --- Isfahan University of Technology, Iran Sima Soltani Renani --- Isfahan University of Technology, IranRecent research on Dunford-Pettis operators associated with the group algebra L 1 (G) and the Fourier algebra A(G) of a locally compact group has motivated the study of the structure of the Dunford-Pettis space for a Banach module ϵ over... -
Seeds of cooperation, fruits of innovation: Understanding the Iranian vaccine industry in the COVID-19 pandemic-era through the lens of the innovation ecosystem
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mitra Aminlou --- Allameh Tabataba'i University, Iran Soroush Ghazinoori --- Allameh Tabataba'i University, Iran Mehdi Goodarzi --- Allameh Tabataba'i University, Iran Mahdi Elyasi --- Allameh Tabataba'i University, Iran Mostafa Ghanei --- Baqiyatallah University of Medical Sciences, IranThe COVID-19 pandemic highlighted the complexities of vaccine industry innovation. This study aims to understand how Iran’s vaccine industry rapidly responded to the COVID-19 pandemic under severe sanctions by applying an innovation ecosystem-as-structure framework. It addresses two research objectives: identifying...
