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Influence of Soil Organic Matter Content on the Responsiveness of Eucalyptus grandis to Nitrogen Fertiliser
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A.D. Noble --- Institute for Commercial Forestry Research, South Africa M.A. Herbert --- Institute for Commercial Forestry Research, South AfricaIt is widely recognised that the inherent nitrogen (N) mineralisation capacity of a soil is directly related to the organic matter content. Consequently, in estimating the N requirements of Eucalyptus grandis at planting this mineralisation potential must be taken into... -
The Relationship between Soil Water Status, Rainfall and the Growth of Eucalyptus grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D.I. Boden --- Institute for Commercial Forestry Research, South AfricaAvailable soil water is recognised as the main factor influencing the growth of commercial plantations in southern Africa. This is of strategic importance as successive rotations of demanding species such as Eucalyptus grandis may be depleting the soil water reserves... -
Comparison of Eucalyptus grandis Provenances and Seed Orchards in a Frost Frequent Environment
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D.L. Rockwood --- Department of Forestry, USA G.F. Meskimen --- , USAAn international provenance trial of Eucalyptus grandis was established in southern Florida in 1980 and measured for growth and frost-tolerance through 8,8 years. The trial compared 20 Australian provenances 1) among themselves and 2) with seed orchard stock from Florida... -
Effect of Initial Spacing and Thinning on Some Wood Properties of Eucalyptus grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: F.S. Malan --- Division of Forest Science and Technology, M. Hoon --- Division of Forest Science and Technology,A study was made of the effect of thinning intensity on wood density and some wood anatomical properties and their within-tree variation patterns, as well as the extent to which the development of growth-stress splits in logs and sawn boards... -
The Use of Roots to Test N, P and K Deficiencies in Eucalyptus Nutrition
Item type: Journal Article • Journal: South African Forestry Journal • Authors: John Dighton --- , HelenE. Jones --- ,Bioassays have been developed which can provide diagnostics of the nutritional status of trees. They measure the flux of N, P or Rb for K into roots from standard solutions where the rate of influx is inversely related to nutrient... -
The Effects of Phosphorus and Dolomitic Lime on the Production and Volumetrical Conversion Factors of Eucalyptus grandis Wood
Item type: Journal Article • Journal: South African Forestry Journal • Authors: S.V. Valeri --- , Brazil I.B. Aguiar --- , Brazil L. Corradini --- , Brazil S.F. Alvarenga --- , BrazilThe effects of phosphorus and dolomitic lime applications on the stacked wood volume, dry wood weight and form, bark and stacking factors of Eucalyptus grandis Hill ex Maiden trees are presented. The rates of phosphorus (0 kg, 200 kg and... -
Spatial variation of soil and plant properties and its effects on the statistical design of a field experiment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Venter --- , South Africa M.F. Smith --- , South Africa D.J. Beukes --- , South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa M. Van Meirvenne --- Dept. Soil Management and Soil Care, BelgiumThe standard procedure in field experimentation is to use a randomized complete block (RCB) design, striving for the most homogeneous conditions as possible among plots in the same block. However, geostatistical concepts dictate that a spatial dependence exists for observations... -
Application of the 3-PG model to a Eucalyptus grandis stand subjected to varying levels of water and nutritional constraints in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J. M. Campion L.J. Esprey M.C. ScholesThe 3-PG model has shown considerable potential as a tool for predicting forest productivity. As part of a model validation exercise, 3-PG was applied to an irrigated and fertilised Eucalyptus grandis stand in the KwaZulu-Natal Midlands. Simulations were run over... -
The effect of harvesting operations, slash management and fertilisation on the growth of a Eucalyptus clonal hybrid on a sandy soil in Zululand, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: ColinW Smith Ben du ToitHarvesting operations during clearfelling and extraction of timber from commercial plantations result in many processes that may affect long-term site productivity such as soil compaction and residue manipulation. The objective of this work was to evaluate the effects of various... -
Kraft Pulping Properties of Acacia mearnsii and Eucalyptus grandis Grown in Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: A. Muneri --- , AustraliaPulpwood samples from 8-year old Acacia mearnsii and Eucalyptus grandis plantations grown in Zimbabwe were evaluated for kraft pulping, bleaching and papermaking properties. The possibility of co-pulping the two species was also investigated. -
A Site-growth Study of Eucalyptus grandis in the Mpumalanga Escarpment Area
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J.H. Louw --- ,A site-growth study was conducted on Eucalyptus grandis on the granitic soils of the Mpumalanga escarpment area. The objectives were twofold, namely to identify those site factors that can be related to the growth of the species, as well as... -
Predicted and realized genetic gain in Eucalyptus grandis breeding seedling orchard in Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: W.J. GapareResults are presented of a fourth generation breeding seedling orchard of Eucalyptus grandis Hill Maiden of 30 half-sib families. Measurements at one and half and five years were available. Analysis of one and half year data showed no significant differences... -
Psychosocial Experiences of Coloured Grandmothers who are the Primary Care Givers of Their Grandchildren
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Herman Grobler --- North-West University, South Africa Vera Roos --- North-West University, South AfricaThis study explored the psychosocial experiences of grandmothers who care for their grandchildren. A qualitative research design was used. Twelve grandmothers (age range = 50 to 65) from a peri-urban community in the Western Cape (South Africa) were selected as... -
On Sums of Pettis Integrable Random Elements
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.C. FerrandoGiven a complete probability space (Ω, σ, μ) and a Banach space X, we investigate the relationship among different types of convergence in P 1 (μ, X), the space of all X-valued μ -measurable [classes of] Pettis integrable functions, of... -
Lattice Properties of Operators Defined By Random Measures
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.J. Grobler B. de Pagter D.T. RambaneWe prove that the lattice properties of operators defined by random measures hold under general conditions on the measure space. This solves a problem found in a paper of A.R. Sourour on these operators and generalizes his results. -
On the L2n 1– Extension Properties
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lahcène MezragWe have proved that for all compact linear operator u from R into an Lp ([0,1], ν) (0 < p < 1) extends to L 1 ([0,1], ν), where R denotes the closed linear subspace in L 1 ([0,1], ν)... -
The first and last ascents of size d or more in samples of geometric random variables
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Charlotte Brennan Arnold KnopfmacherWe consider words or strings of characters a 1 a 2 a 3…a n of length n, where the letters ai ∈ N are independently generated with a geometric probability -
Hwang's Quasi-Power-Theorem in Dimension Two
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Clemens HeubergerIn a frequently used theorem, H.K. Hwang proved convergence rates for the central limit theorem of a class of random variables whose moment generating function has a "quasi-power" structure. We generalise this result to random vectors of two variables. -
Generalized spacelike Bertrand curves in Minkowski 5-space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Soley Ersoy --- Department of Mathematics, Faculty of Arts and Sciences, Turkey Abdullah Inalcik --- Department of Mathematics, Faculty of Arts and Sciences, TurkeyIn this paper, we give the definition of the generalization of spacelike Bertrand curves and obtain the characterization of these curves in Minkowski 5-space . Moreover, we define three types special spacelike Bertrand curves in Minkowski 5-space -
Factors associated with HIV infection among sexually experienced adolescents in Africa: a pooled data analysis
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Stella Babalola --- Johns Hopkins Bloomberg School of Public Health, United StatesThe article examines the factors associated with HIV status among adolescents aged 15–19 years in 13 African countries: Côte d'Ivoire, Democratic Republic of Congo, Guinea, Kenya, Liberia, Mali, Malawi, Rwanda, Sierra Leone, Swaziland, Tanzania, Zambia and Zimbabwe. The data were... -
Health-promoting practices and the factors associated with self-reported poor health in caregivers of children orphaned by AIDS in southwest Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Rhoda Suubi Muliira --- , Oman Joshua Kanaabi Muliira --- , OmanInformal caregivers worldwide are faced with the dilemma of maintaining their health and meeting the caregiving demands of their loved ones. This study explores the health outcomes of caregiving, caregivers’ health-promoting practices and the challenges to providing care among caregivers... -
Some Effects of Pruning on Growth and Timber Quality of Eucalyptus grandis in Zululand
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, F.S. Malan --- , W.E. Conradle --- ,A pruning trial in Eucalyptus grandis with six pruning regimes and a control displayed negligible effects on growth rates. Recovery after removal of up to 50% of the live crown was rapid. Gains in knot-free timber were insignificantly small while... -
Management of Short Rotation Coppice Crops of Eucalyptus grandis Hill ex Maiden
Item type: Journal Article • Journal: South African Forestry Journal • Authors: J.A. Stubbings --- , A. P.G. Schönau --- ,Results are given of three experiments in the summer rainfall region of the Republic of South Africa which were designed to compare in short rotations the survival, growth, form and final timber yields of the parent seedling crop of E... -
The Silvicultural Treatment of Eucalypt Plantations in Southern Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.J. Poynton --- Department of Water Affairs, Forestry and Environmental Conservation,Approximately 500 000 ha has been afforested in Southern Africa with Eucalyptus spp.—principally E. grandis—for the production of mining timber, pulpwood, rough building and fencing materials and fuel on a short rotation of 6 to 10 years, for telegraph and... -
Inbreeding Effects in Eucalyptus grandis in Relation to Degree of Relatedness
Item type: Journal Article • Journal: South African Forestry Journal • Authors: G. van Wyk --- Department of Water Affairs, Forestry and Environmental Conservation,Introductory remarks refer to the detrimental effects of selfing in E. grandis. How do other types of inbreeding such as the mating of half-sibs or full-sibs compare with out-crossed material? Results from two trials are presented comparing growth performance of... -
Seasonal Changes in Foliar Nutrient Content of E. grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- ,The monthly variations in the concentrations of six macro- and four micro-nutrients in the foliage of Eucalyptus grandis were studied at three different sites for a period of two years, when the trees were between one and three years of... -
Application of a Factorial Design to a Thinning Experiment in Eucalyptus grandis, with Intermediate Results
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- , South AfricaThe background is given to the choice of experimental design for a thinning experiment in E. grandis. A 34 factorial experiment confounded in randomised incomplete blocks of nine units was preferred with thinning intensity, age of first thinning, interval between... -
Final Findings on the Response of Eucalyptus grandis to Fertilising at De Kaap, Eastern Transvaal
Item type: Journal Article • Journal: South African Forestry Journal • Authors: M.A. Herbert --- , South Africa D.A. Jackson --- , South Africa R.Verloren van Themaat --- , South AfricaThe final results are presented of a pair of fertiliser experiments with a seedling crop of Ecucalyptus grandis on fully cultivated sites, one of which incorporated the application of dolomitic lime. Liming had a strong effect on the response of... -
Volume Regression Equations for Eucalyptus Grandis on the Coastal Plain of Zululand
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre,Separate volume regression equations for pulpwood, sawtimber and over-mature Eucalyptus grandis are presented. An investigation of Schumacher and Hall's volume equation indicated that a better fit may be obtained by adding a constant to the dbh as predictor variable. The... -
Rectangular Espacement Does Not Cause Stem Ellipticity in Eucalyptus grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: Brian Bredenkamp --- Natal Forestry Research Centre, Department of Environment Affairs,Eucalyptus grandis grown with varying degrees of rectangularity of growing space showed that stem ellipticity could not be attributed to proximity of nearest neighbours. Stem ellipticity was markedly orientated along wind directions prevailing in the Eastern Transvaal. Extreme rectangularity of... -
Relationship between Growth Rate and Foliar Concentrations of Nitrogen, Phosphorus and Potassium for Eucalyptus grandis
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- , Republic of South Africa M.A. Herbert --- , Republic of South AfricaThe growth responses to applications of N, P, K and lime are described briefly for four comprehensive fertiliser experiments with Eucalyptus grandis. Foliar concentrations of N, P and K were determined for these experiments, and their relationship to growth rate... -
The Response of Eucalyptus grandis to Fertilising with Nitrogen, Phosphorus, Potassium and Dolomitic Lime on a Mispah Soil Series
Item type: Journal Article • Journal: South African Forestry Journal • Authors: M.A. Herbert --- , South AfricaThe final results are presented of a comprehensive N, P,K and dolomitic lime factorial experiment with Eucalyptus grandis planted on a fully cultivated Mispah soil series. On this marginal site, fertilising had a marked effect on the growth of E... -
Productivity Studies of a Large Scale Semi-mechanised Harvesting System for Shortwood in Hilly Terrain
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.M. de Laborde --- ,Large scale extraction of shortwood E. grandis timber by means of a semi-mechanised system in hilly terrain gives high productivity from clearfellings. The system employs wheeled tractors and manually loaded low-bed trailers for infield shortwood harvesting. Loads of five to... -
Pre-commercial Thinning of Eucalyptus grandis for Mining Timber Production
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, C.J. Schutz --- Natal Forestry Research Centre,Eucalyptus grandis was thinned before a commercial yield could be expected. in an attempt to narrow the distribution of diameters and so raise the proportion of timber within mining timber standards. It IS shown that a mid-rotation thinning will not... -
Predicting Growth of Eucalyptus grandis: A Worked Example
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre,A worked example demonstrates the simulation of growth patterns in unthinned stands of Eucalyptus grandis. It is shown how response to thinning can be deduced and projections of diameter and height growth can be made for sites differing in growth... -
Effects of Spacing and Age on Growth of Eucalyptus grandis on a Dry Zululand Site
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- ,The response of unthinned Eucalyptus grandis to initial stand density ranging from 25 to 6 670 stems per hectare up to 22 years of age is described using simple quadratic functions. This method resulted in distorted estimates of growth parameters... -
The Effect of Nitroacta (Urea Formaldehyde) on the Growth and Development of Eucalyptus grandis and Pinus elliottii
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.F. Loxton D. G.M. DonaldA pot trial testing the effect of four rates of urea formaldehyde, applied in two forms, on the growth of Eucalyptus grandis and Pinus elliottii is described. It is concluded that the eucalypt responded linearly to this slow-acting nitrogen source... -
A near mass stranding of cetaceans in St Helena Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PB Best --- , South Africa D Reeb --- , South AfricaA group of 70 false killer whales Pseudorca crassidens and 124 bottlenose dolphins Tursiops sp., and a separate group of 13 Risso's dolphins Grampus griseus, assembled close inshore off a known mass-stranding site in St Helena Bay, South Africa, in... -
False killer whale Pseudorca crassidens mass stranding at Long Beach on South Africa's Cape Peninsula, 2009
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Department of Environmental Affairs, South Africa MA Meÿer --- Department of Environmental Affairs, South Africa M Thornton --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaA mass stranding of false killer whales Pseudorca crassidens at Long Beach near the village of Kommetjie (34°8.18'S, 18°9.77'E) on the Cape Peninsula, South Africa, in May 2009 is described. Theestimated size of stranded group was 55 animals, which is... -
Early post-release survival of stranded Cape fur seal pups at Black Rocks, Algoa Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GJG Hofmeyr --- , South Africa M du Toit --- , South Africa SP Kirkman --- Department of Environmental Affairs, South AfricaThe small and isolated Cape fur seal Arctocephalus pusillus pusillus rookery at Black Rocks, Algoa Bay, South Africa, is an important component of the marine biota of the Addo Elephant National Park. Although little is known of the demographics of... -
The November 2011 irruption of buoy barnacles Dosima fascicularis in the Western Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PG Ryan --- Percy FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South Africa GM Branch --- Marine Research Institute, Department of Zoology, South AfricaNovember 2011 saw an unprecedented irruption of buoy barnacles Dosima fascicularis in coastal waters off the Western Cape, South Africa. Buoy barnacles not uncommonly strand in the region attached to feathers, plastic litter and other small objects, but the 2011... -
Pygmy right whale Caperea marginata records from Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RH Leeney --- Namibian Dolphin Project, Namibia K Post --- Natural History Museum, The Netherlands PB Best --- Mammal Research Institute, South Africa CJ Hazevoet --- Unidade de Zoologia, Rua da Junqueira, Portugal SH Elwen --- Namibian Dolphin Project, NamibiaAll known records of pygmy right whales Caperea marginata in Namibia since 1978 are summarised for the first time, including 12 strandings (live and recently dead animals) and skeletal remains from at least eight more individuals. The majority of strandings... -
Harvesting genetics for productive plantations
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S.D. Verryn --- Tree Improvement Business Area, Environmentek CSIR,Tree breeding has had significant impacts on the success of the South Mrica forest industry. Examples are cited for tree growth rate, where for instance, a mean genetic improvement of39% has been measured in F2 E.grandis over unimproved controls over... -
Genetic improvement of Eucalyptus grandis using breeding seedling orchards and multiple population breeding strategy in Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: W. J. Gapare --- Forest Sciences Centre, Canada R. D. Barnes --- Department of Plant Sciences, University of Oxford, United Kingdom D. P. Gwaze --- Forest Science Laboratory, College Station, USA B. I. Nyoka --- Forest Research Centre, ZimbabweEucalyptus grandis is commercially important in Zimbabwe and a breeding program has been in progress since 1962. A classical breeding strategy was used initially but, in 1981, the Multiple Population Breeding Strategy (MPBS) was implemented and the concept of the... -
Site and stand analysis for growth prediction of Eucalyptus grandis on the Zululand coastal plain
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: M. du Plessis --- , J Zwolinski --- ,The integration of site information with that of tree growth is of special importance in Zululand, where sustainable supply of timber is essential for local processing and export commitments. Site prediction growth models need to be based on easily attainable... -
Effects of site management operations on the nutrient capital of a eucalypt plantation system in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Ben du Toit --- , South AfricaThe Karklo of Project is a case study ofthe effects ofintensive site management operations during the interrotational period, on (a) the nutrient capital of the system, and (b) the availability of growth resources (nutrients and water) in a commercial Eucalyptus... -
Modelling maximum canopy conductance and transpiration in Eucalyptus grandis stands not subjected to soil water deficits
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J. M. Campion --- , Republic of South Africa P.J. Dye --- Environmentek, CSIR, c/o Agrometeorology, Republic of South Africa M.C. Scholes --- School of Animal, Plant and Environmental Sciences, Republic of South AfricaThere is much current interest in predicting the maximum amount of water that can be transpired by Eucalyptus trees. It is possible that industrial waste water may be applied as irrigation water to eucalypts and it is important to predict... -
How a dependent variable's non-randomness affects taper equation fitting
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Kitikidou Kyriaki --- Demokritian University of Thrace, Greece (Department of Forestry and Management of Environment and Natural Resources, Laboratory of Forest Biometry), GreeceIn order to apply the least squares method in regression analysis, the values of the dependent variable Y should be random. In an example of regression analysis linear and nonlinear taper equations, which estimate the diameter of the tree dh... -
Relative success of self and outcross pollen after mixed- and single-donor pollinations in Eucalyptus grandis
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: TN Horsley --- School of Biological and Conservation Sciences, South Africa SD Johnson --- School of Biological and Conservation Sciences, South AfricaA previous observation that self-pollen tubes traversed the style at a slower rate than cross-pollen tubes in Eucalyptus grandis and E. urophylla suggested the presence of cryptic self-incompatibility (CSI) in these species. The aim of the present study was, with... -
A technique to identify annual growth rings in Eucalyptus grandis usingannual measurements of diameter at breast height and gamma raydensitometry
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: S Naidoo --- , South Africa F Ahmed --- , South Africa NW Pammenter --- , South Africa A Zboňák --- Department of Primary Industries and Fisheries, AustraliaMany eucalypt species do not show distinct growth rings because cambial activity does not show a strong response to seasonal variation in climate. Eucalyptus grandis, one of the most important commercial hardwood species in South Africa, is one such example... -
Growth and yield models for Eucalyptus grandis grown in Swaziland
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M du Plessis --- , South Africa H Kotze --- , South AfricaThe aim of this study was to develop a stand-level growth and yield model for short-rotation Eucalyptus grandis grown for pulp wood production at Piggs Peak in Swaziland. The data were derived from a Nelder 1a spacing trial established with... -
Stem biomass and volume models of selected tropical tree species in West Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: GHS Guendehou --- , Bénin A Lehtonen --- , Finland M Moudachirou --- Laboratoire de Pharmacognosie, Faculté des Sciences et Techniques, Bénin R Mäkipää --- , Finland B Sinsin --- Laboratoire d'Ecologie Appliquée, Faculté des Sciences Agronomiques, BéninEstimating tree volume and biomass constitutes an essential part of the forest resources assessment and the evaluation of the climate change mitigation potential of forests through biomass accumulation and carbon sequestration. This research article provides stem volume and biomass equations... -
Stomatal characteristics of Eucalyptus grandis clonal hybrids in response to water stress
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: AlanaB Eksteen --- School of Life Sciences, South Africa Valerie Grzeskowiak --- Sappi Forests, South Africa NickyB Jones --- Sappi Forests, South Africa NormanW Pammenter --- School of Life Sciences, South AfricaThis study describes the stomatal response occurring during water stress and subsequent recovery of three Eucalyptus grandis clonal hybrids. The aim was to investigate the degree to which stomatal conductance (g s) and stomatal density differ between the clonal hybrids... -
Fostering children affected by AIDS in Richards Bay, South Africa: a qualitative study of grandparents' experiences
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Evalyne Nyasani --- , United Kingdom Erna Sterberg --- , South Africa Helen Smith --- , United KingdomGrandparents are increasingly becoming the primary carers of children orphaned by the HIV epidemic in South Africa. Traditional family roles are being reversed as aging family members take responsibility for the physical and psychosocial needs of children. This study uses... -
Genetic control of wood density and bark thickness, and their correlations with diameter, in pure and hybrid populations of Eucalyptus grandis and E. urophylla in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: ECL Retief TK StangerTree diameter under and over bark at breast height (dbh), wood density and bark thickness were assessed on samples from control-pollinated families of Eucalyptus grandis, E. urophylla, E. grandis × E. urophylla and E. urophylla × E. grandis. The material... -
Genetic parameters of pure and hybrid populations of Eucalyptus grandis and E. urophylla and implications for hybrid breeding strategy
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: ECL Retief TK StangerIn order to review Sappi Forests' breeding strategy for E. urophylla × E. grandis hybrids, information is required regarding the genetic control of certain traits and the correlations between them. A hybrid seedling progeny trial was planted, comprising material generated... -
A comparison of deterministically predicted genetic gains with those realised in a South African Eucalyptus grandis breeding program
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: SD Verryn CL Snedden KA EatwellTree breeders attempt to predict the genetic gains that are likely to be achieved through selection and breeding of new generations, using stochastic or deterministic modelling. There are many factors that may cause a discrepancy between the predicted and realised... -
Damage to foliage and stems caused by fungal pathogens in young eucalypt plantations in Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: A Muimba-Kankolongo --- School of Natural Resources, Zambia IN Nawa --- School of Agricultural Sciences, Zambia J Roux --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute, South Africa P Ng'andwe --- School of Natural Resources, ZambiaPlantations consisting of non-native tree species were established on the Copperbelt of Zambia to supplement timber supply from natural forests and to meet the increasing demand of round wood and fuel wood for the copper mines. In early 2004, a... -
Analysis of differences in field performance of vegetatively and seed-propagated Eucalyptus varieties I: survival and leaf gas exchange
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: MEO Mokotedi --- School of Biological and Conservation Sciences, Biological Sciences Building, South Ring Road, Westville Campus, South Africa MP Watt --- School of Biological and Conservation Sciences, Biological Sciences Building, South Ring Road, Westville Campus, South Africa NW Pammenter --- School of Biological and Conservation Sciences, Biological Sciences Building, South Ring Road, Westville Campus, South AfricaThe aim of this study was to compare survival rates and leaf gas exchange of micro- and macro-propagated Eucalyptus grandis × E. nitens, and seed-propagated E. grandis and E. nitens, at a site in Hilton, KwaZulu-Natal, South Africa, where the... -
Clonal differences in log end splitting in Eucalyptus grandis in relation to age, parent performance, growth rate and wood density in two even-aged trials in Mpumalanga, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: FS MalanThis paper discusses the juvenile–mature correlation of log end splitting among Eucalyptus grandis clones from two trials and how differences in splitting relate to differences in wood density, pith-to-bark gradient and growth rate. Two approximately 20-year-old Eucalyptus grandis clonal trials... -
Effect of location and season on the arthropod prey of Nycteris grandis (Chiroptera: Nycteridae)
Item type: Journal Article • Journal: African Zoology • Authors: Sarah Bayefsky-Anand --- Abraham Joshua Heschel School, U.S.A.Analysis of culled arthropod prey parts collected from beneath four feeding perches was used to assess prey taken by Nycteris grandis from November 1987 to May 1988. The perches were located along the Zambezi River in Mana Pools National Park... -
Place Images and Nation Branding in the African Context: Challenges, Opportunities, and Questions for Policy and Research
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Nicolas Papadopoulos --- Sprott School of Business, Canada Leila Hamzaoui-Essoussi --- Telfer School of Management, CanadaThis paper examines nation branding in Africa, based on a comprehensive and integrative review of past research. This considers, among others, current place images on the continent in the context of traditional views, which see it as a poor and... -
A visual analysis of a cultural tourism destination
Item type: Journal Article • Journal: • Authors: Klaes Eringa and Shenghan Zhou --- Stenden Hotel Management School, Stenden University of Applied Sciences, Leeuwarden, The NetherlandsThis research investigates how a relatively unknown town that is elected as cultural capital of Europe can use visual materials to attract visitors from totally different areas in the world, particularly China. The study uses visual cues for two purposes:... -
Growth models for six Eucalyptus species in Angola
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Cristobal Delgado-Matas --- Faculty of Agrarian Sciences, Angola Timo Pukkala --- Faculty of Science and Forestry, FinlandThis study developed growth models for Eucalyptus saligna Sm., E. camaldulensis Dehnh., E. macarthurii H.Deane & Maiden, E. resinifera Sm., E. siderophloia Benth. and E. grandis Hill ex. Maiden, for the central highlands of Angola, and used these models to... -
A tool for identifying potential Eucalyptus nitens seed orchard sites based on climate and topography
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ilaria Germishuizen --- Institute for Commercial Forestry Research, South Africa Robin AW Gardner --- Institute for Commercial Forestry Research, South AfricaShy seed production in orchards of Eucalyptus nitens is a major barrier to the deployment of genetic gain in South African plantations. A machine learning method was used to identify optimal sites for the establishment of E. nitens seed orchards... -
Portfolio strategies for hedging against rand weakness
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: G D I Barr --- Department of Statistical Sciences, C G Holdsworth --- Department of Statistical Sciences, B S Kantor --- Department of Statistical Sciences,This paper considers how portfolios may be structured which provide protection against Rand exchange rate movement and, in particular, against Rand weakness. Two portfolio optimisation methods are used to estimate the portfolio weights of the Top 40 shares listed on... -
Effects of the market factor on portfolio diversification: the case of market crashes
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Cheoljun Eom --- School of Business, Korea Jong Won Park --- College of Business Administration, Korea Yong H. Kim --- Carl H. Lindner College of Business, USA Taisei Kaizoji --- Graduate School of Arts and Sciences, JapanThis paper investigates empirically the effects of the market factor on the degree of portfolio diversification extracted from Markowitz's mean-variance (MV) model to explore an alternative method for improving the practical usefulness of the model. It controls for various properties... -
Can brand personality differentiate fast food restaurants?
Item type: Journal Article • Journal: • Authors: Alisha Ali --- Sheffield Hallam University, City Campus, London, United Kingdom Vishal Sharma --- PriceWaterHouse Coopers, London, United KingdomThis study examines brand personality as an approach to establish brand differentiation in the highly competitive fast food sector. A modified brand personality scale proposed by Musante et al. (2008) was used to develop a questionnaire which was distributed to... -
The place branding of Qatar
Item type: Journal Article • Journal: • Authors: Maaike de Jong --- European Tourism Futures Institute, Stenden University, the NetherlandsDestination branding has become popular. Countries brand themselves to draw visitors and competent expatriates and to create economic diversification. The brand emphasises the uniqueness of the place; it frames the culture and sells its way of life. In the perspective... -
Employer branding: A new approach for the hospitality industry
Item type: Journal Article • Journal: • Authors: Sjoerd A Gehrels --- Stenden University of Applied Sciences, Leeuwarden, the NetherlandsThe Western hospitality industry experiences a shortage of skilled professionals due to a poor image and competition from other sectors. Employer branding, which is used as a human resources strategy to differentiate brands, has the potential to deal with some... -
A Review of “Place Images and Nation Branding in the African Context: Challenges, Opportunities, and Questions for Policy and Research”, (Nicolas Papadopoulos and Leila Hamzaoui-Essoussi)
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Eugene D. Jaffe --- Ruppin Academic Center, IsraelThis review of Nicolas Papadopoulos and Leila Hamzaoui-Essoussi's paper “Place Images and Nation Branding in the African Context: Challenges, Opportunities, and Questions for Policy and Research” touches upon the authors’ objectives and the extent to which they have been carried... -
Brand performance of Chinese domestic vs. international hotels: Perceptions of operators as well as domestic and foreign guests
Item type: Journal Article • Journal: • Authors: Cathy H.C. Hsu --- School of Hotel and Tourism Management, The Hong Kong Polytechnic University, Kowloon, Hong KongThe significant differences in financial performance between internationally branded hotels and domestically branded hotels in China inspired this study. As part of the research, we surveyed hotel operators and guests on their perception of brand performance of the hotel they managed and... -
A comparison of planting and coppice regeneration of Eucalyptus grandis × Eucalyptus urophylla clones in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jacob W Crous --- Sappi Forests, South Africa Louisa Burger --- Department of Forest and Wood Science, South AfricaResults from two coppice compared to replant trials are presented that originated from clone by site interaction (CSI) trials established on high‑ and low‑productivity sites in subtropical coastal KwaZulu‑Natal, South Africa. After the 84‑month CSI trial measurements were completed the... -
Understanding the challenges and opportunities encountered by the elderly in urban KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: M Kasiram --- School of Social Work and Community Development, South Africa D Hölscher --- School of Social Work and Community Development, South AfricaBackground: This article is based on research conducted by students at the University of KwaZulu-Natal as part of the coursework requirements in the research module in social work in students’ final year of study. -
Randomisation in a clinical trial: is it feasible in the Ebola crisis? If it is, then which method is suitable?
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Jesca Mercy Batidzirai --- School of Mathematics, Statistics and Computer Science, South AfricaRandomisation is an integral component of any sensible clinical trial. Randomisation is the only way we can be sure that the patients have been allocated into the treatment arms with as minimum bias as possible, and that the treatment arms... -
Product diversification in South Africa’s commercial timber plantations: a way to mitigate investment risk
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Verena C Griess --- Department of Forest Resources Management, Faculty of Forestry, Canada Britta Uhde --- Department of Forest and Wood Science, South Africa Cori Ham --- Institute of Forest Management, Germany Thomas Seifert --- Institute of Forest Management, GermanyWe used the portfolio method to examine how a forest company can lower investment risk by producing a mix of timber products. We derived optimum combinations of pine (Pinus patula) saw timber production and eucalypt (Eucalyptus grandis) pulpwood production at... -
Minimising instability on manufacturing systems after random disruption
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: John M. Ikome --- Department of Industrial Engineering, South Africa Sesan P. Ayodeji --- Department of Industrial Engineering, South Africa Grace M. Kanakana --- Department of Industrial Engineering, South AfricaOne of the major issues in manufacturing systems is to determine how to deal effectively with unexpected disruption during production operation, (e.g. material unavailability, machine breakdown, employee absenteeism, power failure and additional resources, etc.). This paper presents a comprehensive literature... -
The economics of the carbon sequestration potential of plantation forestry in south-western Uganda
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Isaac Kiyingi --- National Forestry Resources Research Institute, Uganda Abdi-Khalil Edriss --- Department of Agricultural and Applied Economics, Faculty of Development Studies, Malawi Alexander MR Phiri --- Department of Agricultural and Applied Economics, Faculty of Development Studies, Malawi Buyinza Mukadasi --- School of Postgraduate Studies, Uganda Susan Tumwebaze --- School of Forestry, Environment and Geographical Sciences, Uganda Hillary Agaba --- National Forestry Resources Research Institute, UgandaThis study assessed the amount of carbon stored and the economic viability of the small-scale Clean Development Mechanism (CDM) carbon offsets in Pinus caribaea and Eucalyptus grandis plantations under varying rotations. Volume equations were used to estimate carbon stocks and... -
The effect of the glycaemic response of three commonly consumed meals on postprandial plasma glucose in type 2 diabetics at the University of Nigeria Teaching Hospital, Enugu
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: IM Nnadi --- Department of Human Nutrition, Nigeria OO Keshinro --- Department of Human Nutrition, NigeriaObjectives: This study evaluated the glycaemic response of three commonly consumed meals, and the resultant effect on postprandial plasma glucose response in type 2 diabetes mellitus patients at the University of Nigeria Teaching Hospital, Ituku-Ozalla, Enugu State, Nigeria. -
Diversity and distribution of seagrasses in the Union of the Comoros
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CNS Poonian --- Community Centred Conservation (C3), UK K Tuharska --- C3 Madagascar and Indian Ocean Islands Programme, Madagascar MD Hauzer --- C3 Madagascar and Indian Ocean Islands Programme, MadagascarThis study represents the first in situ assessment of seagrasses in the Union of the Comoros. The presence of the following 10 species (ranked in order of abundance) was confirmed: Thalassia hemprichii, Thalassodendron ciliatum, Syringodium isoetifolium, Halodule wrightii, Cymodocea rotundata,... -
Beef traders’ and consumers’ perceptions on the development of a natural pasture-fed beef brand by smallholder cattle producers in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tawanda Marandure --- Department of Animal Science, South Africa Cletos Mapiye --- Department of Animal Science, South Africa Godswill Makombe --- University of Limpopo, Turfloop Graduate School of Leadership, South Africa Baldwin Nengovhela --- Agricultural Research Council – Animal Production Institute, South Africa Phillip Strydom --- Agricultural Research Council – Animal Production Institute, South Africa Voster Muchenje --- Department of Livestock and Pasture Science, South Africa Kennedy Dzama --- Department of Animal Science, South AfricaBeef traders’ and consumers’ perceptions on the development of a natural pasture-fed beef (NPB) brand by smallholder cattle producers were investigated. In total, 18 meat traders (five abattoirs and 13 beef retailers) and 155 beef consumers were interviewed using structured... -
Determinants and opportunities for commercial marketing of beef cattle raised on communally owned natural pastures in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tawanda Marandure --- Department of Animal Science, South Africa Cletos Mapiye --- Department of Animal Science, South Africa Godswill Makombe --- University of Limpopo, Turfloop Graduate School of Leadership, South Africa Baldwin Nengovhela --- Agricultural Research Council – Animal Production Institute, South Africa Phillip Strydom --- Agricultural Research Council – Animal Production Institute, South Africa Voster Muchenje --- Department of Livestock and Pasture Science, South Africa Kennedy Dzama --- Department of Animal Science, South AfricaThe objective of this study was to examine the factors influencing smallholder producers’ potential to sell cattle and identify marketing opportunities for sustainable beef production in South Africa. A total of 95 structured questionnaires was administered to the Ncorha and... -
Genetic parameters for large white pigs reared under intensive management systems in Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: V. O. Ouko --- Department of Animal Science, Kenya E.D. Ilatsia --- Kenya Agricultural and Livestock Research Organization (KALRO), Kenya G. W. Oduho --- Department of Animal Science, Kenya D. K. Kios --- Department of Animal Science, KenyaA lack of performance parameters is one of the factors limiting the implementation of sustainable breeding strategies for the pig industry in Kenya. The objective of this study was to estimate genetic and phenotypic parameters for growth performance of Large... -
The place branding of Qatar
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Maaike de Jong --- European Tourism Futures Institute, Stenden University, the NetherlandsDestination branding has become popular. Countries brand themselves to draw visitors and competent expatriates and to create economic diversification. The brand emphasises the uniqueness of the place; it frames the culture and sells its way of life. In the perspective... -
Employer branding: A new approach for the hospitality industry
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sjoerd A Gehrels --- Stenden University of Applied Sciences, the Netherlands Joachim de Looij --- Hotel Mercure Arthur Frommer, The NetherlandsThe Western hospitality industry experiences a shortage of skilled professionals due to a poor image and competition from other sectors. Employer branding, which is used as a human resources strategy to differentiate brands, has the potential to deal with some... -
Can brand personality differentiate fast food restaurants?
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Alisha Ali --- Sheffield Hallam University, United Kingdom Vishal Sharma --- PriceWaterHouse Coopers, United KingdomThis study examines brand personality as an approach to establish brand differentiation in the highly competitive fast food sector. A modified brand personality scale proposed by Musante et al. (2008) was used to develop a questionnaire which was distributed to... -
A visual analysis of a cultural tourism destination
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Klaes Eringa --- Stenden Hotel Management School, Stenden University of Applied Sciences, The Netherlands Shenghan Zhou --- Stenden Hotel Management School, Stenden University of Applied Sciences, The NetherlandsThis research investigates how a relatively unknown town that is elected as cultural capital of Europe can use visual materials to attract visitors from totally different areas in the world, particularly China. The study uses visual cues for two purposes:... -
Brand performance of Chinese domestic vs. international hotels: Perceptions of operators as well as domestic and foreign guests
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Cathy H.C. Hsu --- School of Hotel and Tourism Management, The Hong Kong Polytechnic University,The significant differences in financial performance between internationally branded hotels and domestically branded hotels in China inspired this study. As part of the research, we surveyed hotel operators and guests on their perception of brand performance of the hotel they... -
Comparing hotels’ employer brand effectiveness through social media and websites
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sjoerd Gehrels --- Stenden Hotel Management School, The Netherlands Natascha Wienen --- Stenden Hotel Management School, The Netherlands Julio Mendes --- Faculty of Economics, PortugalThis research explores hotel companies’ employer branding (EB) through the internet. Many countries in the world will face a gap between the demand for talent in the hospitality and tourism industry and the available talent pool. Previous research found that,... -
Real-world lessons from the hospitality expert
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Robert Bosma --- Mind Your Guest, and Mind Your Brand, The NetherlandsThis article by Robert Bosma gives an insight in the world of hospitality in the real world and his vision about what hospitality is, how it works successfully and why people find it so important to be treated in a... -
Luxury consumption in tourism: The case of Dubai
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sanjay Nadkarni --- Emirates Academy of Hospitality Management, United Arab Emirates Andy Heyes --- Stenden Hotel Management School, The NetherlandsOver the past 30 years, Dubai has quickly developed into what can no doubt be described as one of the pinnacle tourist and business destinations of the world. Fuelled by the vision and generosity of H.H. Sheikh Mohammad bin Rashid... -
Influence of riparian habitats on the distribution of rainforest chameleons in Parc National de Ranomafana, Madagascar
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Jeanneney Rabearivony --- , , Madagascar Lee D. Brady --- , , UK Richard K.B. Jenkins --- , , UK Richard A. Griffiths --- , , UK Achille P. Raselimanana --- , , Madagascar Michel Bisoa --- , Rasoamampionona N. Raminosoa --- , , MadagascarThe spatial and seasonal distribution of chameleon species along ecological gradients within six riparian areas in Parc National de Ranomafana was studied using transects. Eight species of chameleons were recorded (Palleon nasus, Brookesia superciliaris, B. thieli, Calumma gastrotaenia, C. glawi,... -
Vestigial appendicular skeletons in the African and Malagasy skink species Feylinia grandisquamis, Melanoseps ater, Grandidierina lineata and Voeltzkowia mira
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Rachel Liniewski --- , , USA Shane Stanley --- , USA Julia Andrade --- , , USA Phil Senter --- , , USAVestigial appendicular skeletons are present but have not previously been described and illustrated in the skink species Feylinia grandisquamis and Melanoseps ater. Vestigial appendicular skeletons have been described and illustrated in only one specimen of Grandidierina lineata and in a... -
Broad- and narrow-sense heritabilities in a South African cloned open-pollinated Eucalyptus grandis breeding population
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: CL Snedden CZ Roux SD VerrynGenetic variances and heritabilities of a 66-month old cloned Eucalyptus grandis breeding population of families, derived from open-pollinated selections, were estimated. The genetic variance for the growth traits was largely additive genetic variance, whereas the proportion of non-additive genetic variance... -
Diagnosing foliar nutrient dynamics of Eucalyptus grandis in KwaZulu-Natal, South Africa, using optimal element ratios and the diagnosis and recommendation integrated system (DRIS)
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: JM Campion MC ScholesFertilisation is one of the most cost-effective methods of increasing and maintaining the productivity of Eucalyptus grandis plantations in South Africa. This silvicultural practice can be optimised by using the foliar nutrient ratios measured in plants at maximum growth as... -
Genetic parameters and genotype by environment interaction of Eucalyptus grandis populations used in intraspecific hybrid production in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Gert J van den Berg --- Mondi Forests (Pty) Ltd, South Africa Steven D Verryn --- , South Africa Paxie W Chirwa --- Faculty of Natural and Agricultural Sciences, South Africa Francois van Deventer --- Mondi Forests (Pty) Ltd, South AfricaIn South Africa, Eucalyptus grandis is an important species due to its fast growth and general suitability of its timber for a range of products. However, E. grandis is susceptible to fungal diseases such as Crysoporthe austroafricana and Coniothyrium sp... -
A Multidimensional Approach to International Market Selection and Nation Branding in Sub-saharan Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Andreas Schühly --- Strategy Consultant, Germany Helene Tenzer --- Department of International Business, GermanyDespite the strong economic growth of many African countries, foreign investors often overlook their potential. Nation branding can raise the awareness of foreign investors to the particular strengths of these countries. To identify the specific image attributes of a nation... -
Realised genetic gains and estimated genetic parameters of two Eucalyptus grandis × E. urophylla hybrid breeding strategies
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Gert J van den Berg --- Mondi Forests (Pty) Ltd, South Africa Steven D Verryn --- Faculty of Natural and Agricultural Sciences, South Africa Paxie W Chirwa --- Faculty of Natural and Agricultural Sciences, South Africa Francois van Deventer --- Mondi Forests (Pty) Ltd, South AfricaConventionally, Eucalyptus grandis × E. urophylla (GU) hybrid material is first tested as seedlings in progeny trials for at least four years before ortets are selected and ramets of the selected ortets are propagated to test in clonal trials. The... -
A first-approximation simple dynamic growth model for forest teak plantations in Gujarat state of India
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Vindhya Prasad Tewari --- Himalayan Forest Research Institute, India Bilas Singh --- Arid Forest Research Institute, IndiaTectona grandis (teak) is one of the most important tropical timber species occurring naturally in India. In India, teak is the single most important commercial timber species. Scientifically sound growth models, based on advanced modelling techniques, are often not available,... -
A mass mortality of fishes caused by receding water levels in the vegetated littoral zone of the West Kleinemonde Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaOn 15 November 2017 the mouth of the West Kleinemonde Estuary breached following heavy catchment rains and increased river flow. The water level in the estuary following mouth opening decreased by 1.65 m within 24 h, resulting in an almost... -
The bionomics of whitegrub species (Coleoptera: Scarabaeidae) affecting commercial forestry re-establishment in representative areas of the South African summer-rainfall region
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Derian Echeverri-Molina --- Department of Biology, School of Science and Technology, Sefako Makgatho Health Sciences University, South Africa Prem Govender --- Research and Postgraduate Studies Directorate, Sefako Makgatho Health Sciences University, South AfricaSouth African commercial forestry plants mainly Eucalyptus, Pinus and Acacia species. Invertebrate pests play a significant role in the establishment phase of these exotic trees. Whitegrubs, in particular, are known to affect seedling survival during this period. Their pest status... -
Efficacy and safety of Saccharomyces boulardii in the treatment of acute gastroenteritis in the paediatric population: a systematic review
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Morgambal Padayachee --- Division of Human Nutrition, Faculty of Medicine and Health Sciences, South Africa Janicke Visser --- Division of Human Nutrition, Faculty of Medicine and Health Sciences, South Africa Estelle Viljoen --- Department of Human Nutrition and Dietetics, School of Health Care Sciences, South Africa Alfred Musekiwa --- Centre for Evidence-based Health Care, Faculty of Medicine and Health Sciences, South Africa Renée Blaauw --- Division of Human Nutrition, Faculty of Medicine and Health Sciences, South AfricaContext: Gastroenteritis (GE) remains the second major cause of death in the most vulnerable of the world’s populations. Potential treatments include the use of probiotics, with the yeast Saccharomyces boulardii being one such option. -
Functional Diversity and Performance of Direct Marketing Outlets for Smallholder Farmers of Green Gram and Pigeon Pea Commodities in Machakos County, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: John Mulwa Wambua --- Department of Agricultural Economics and Agribusiness, Kenya Margaret Ngigi --- Department of Agricultural Economics and Agribusiness, Kenya Lutta Muhammad --- Kenya Agricultural and Livestock Research Organization, KenyaThe smallholder direct marketing outlets (private grain traders) serve the smallholder farmers poorly in the rural areas of Kenya, making local markets thin and less competitive. The purpose of this study is to evaluate the diversity and the determinant factors... -
HIV testing preferences among pregnant women attending antenatal care and their male partners: a discrete choice experiment in Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Jeffrey E Korte --- Department of Public Health Sciences, USA Michael Strauss --- Health Economics and HIV and AIDS Research Division, South Africa Aissatou Ba --- Department of Public Health Sciences, USA Esther Buregyeya --- School of Public Health, Uganda Joseph KB Matovu --- School of Public Health, Uganda Rose Kisa --- School of Public Health, Uganda William Musoke --- Mildmay Uganda, Uganda Harriet Chemusto --- Mildmay Uganda, Uganda Caroline J Vrana-Diaz --- Department of Public Health Sciences, USA Angela M Malek --- Department of Public Health Sciences, USA Rhoda K Wanyenze --- School of Public Health, Uganda Gavin George --- Health Economics and HIV and AIDS Research Division, South AfricaHIV testing rates remain stubbornly low among men – a crucial target population for reaching the ambitious global and regional goals of the HIV programme. In an era of declining donor funding, identifying cost-effective strategies to increase testing rates amongst... -
Mapping distribution of water hyacinth (Eichhornia crassipes) in Rwanda using multispectral remote sensing imagery
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JA Mukarugwiro --- School of Animal, Plant and Environmental Sciences (APES), South Africa SW Newete --- School of Animal, Plant and Environmental Sciences (APES), South Africa E Adam --- School of Geography, Archaeology and Environmental Studies (GAES), South Africa F Nsanganwimana --- African Center of Excellence for Innovative Teaching & Learning Mathematics & Science, Rwanda KA Abutaleb --- Institute for Soil, Climate and Water, South Africa MJ Byrne --- School of Animal, Plant and Environmental Sciences (APES), South AfricaWater hyacinth, Eichhornia crassipes (C. Mart) Solms (Pontederiaceae), is an invasive aquatic macrophyte with major negative economic and ecological impacts in Rwanda and other East African countries since its establishment in the region in the 1960s. Reliable estimates of water... -
A survey of Great-winged Petrels Pterodroma macroptera breeding at sub-Antarctic Marion Island and a revised global population estimate
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ben J Dilley --- , South Africa David W Hedding --- , South Africa Stefan Schoombie --- , South Africa Peter G Ryan --- , South AfricaAlthough burrow-nesting petrels are the most abundant group of seabirds in the Southern Ocean, their global populations are poorly known, because most species breed on remote islands. For example, there are no accurate estimates for Great-winged Petrel Pterodroma macroptera populations... -
A comparison of experimental designs for cultivar evaluations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Hae Saul --- , South Africa M Booyse --- , South Africa PA Swanepoel --- , South AfricaSpatial heterogeneity and the lack of clear or significant treatment responses in agricultural field experiments complicates recommending the most suitable cultivar(s) to producers for a specific area. Increased attention should be given to the experimental design of cultivar trials, as... -
Experiential branded app engagement and brand loyalty: An empirical study in the context of a festival
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Xi Li --- , China Xinwei Su --- , China YingChuan Wang --- , ChinaThis study investigated the mediating role of emotional responses and app engagement on the relationship between the perception of app features and brand loyalty. Participants were 417 Macao light festivalgoers (female = 53.2%; age range = 31–40 years old). Using... -
Brand loyalty and the Bangtan Sonyeondan (BTS) Korean dance: Global viewers’ perceptions
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hae-won Lee --- , South Korea Joon-ho Kim --- , South KoreaThis study examined the influence of brand trust and loyalty to Korean Bangtan Sonyeondan (BTS), as perceived by global viewers who watched a BTS dance performance on TV and online. The sample consisted of 498 respondents (women = 44. 7%),... -
A business case argument for corporate social responsibility disclosure in Nigeria
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Inalegwu Ode-Ichakpa --- , UK Emmanuel Cleeve --- , UK Chibuzo Amadi --- , UK Godswill Osemeke --- , UKFrom the theoretical perspectives of stakeholder, agency and slack resources, and using fixed effects and random effects models, this study investigates the relationship between corporate social responsibility (CSR) and financial performance. The study adopts fixed and random effects panel estimates... -
The influence of branding on the uptake of voluntary medical male circumcision: a case study of “Ndife Otsogola” in Lilongwe, Malawi
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Patrick Makono --- , Malawi Peter Mhagama --- , Malawi Chimwemwe Tsitsi --- , MalawiBackground: “Ndife Otsogola” [We are forward thinkers] is the voluntary male medical circumcision (VMMC) campaign in Malawi that is part of the HIV and AIDS health promotion strategy. In 2012, the government of Malawi and its VMMC stakeholders developed communication... -
Recruiting for luxury: Case studies of luxury hotel brands and their co-operative activities for recruiting
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Hartwig Bohne --- , GermanyThis article shows success criteria for joint HR projects of hotel companies and universities for recruiting and retention management. Influenced by demographic developments and a changed preference system, employer branding and recruitment are gaining importance, so that joint structures represent... -
The service semiotics of luxury events: An exploration for future research and events management industry practice
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Charles Bladen --- , UKThis article discusses the implications of the role of semiotics in the design and delivery of luxury event-attendees’ experience. Within the contemporary industry and sector, the place of semiotics within the field of design will be established and its importance... -
Developing a satellite-based frost risk model for the Southern African commercial forestry landscape
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Riyad Ismail --- , South Africa Jacob Crous --- , South Africa Giovanni Sale --- , South Africa Andrew Morris --- , South Africa Kabir Peerbhay --- , South AfricaFrost is a sporadic meteorological event affecting the productivity of commercial forests in South Africa. Severe frost occurrences may cause irreversible damage to forest stands, slowing down tree growth or leading to tree mortality. Using the Moderate Imaging Spectrometer (spatial... -
‘Just be Easy, Feel the Music’ – Branding in the Musical and Social Life of Kampala’s Hip-hop Scene
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Simran Singh --- , UKSituating branding as socio-cultural performative practice, this article provides critical insight into the hip-hop scene in Kampala, Uganda, with spatial contexts evoked through ethnographic accounts. Focusing on a recording studio in the city, branding mobilises, first, musical life through performative... -
Optimisation of micropropagation protocols for temperate eucalypt hybrids in South Africa, with a focus on auxin transport proteins
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rafael Keret --- , South Africa Muhammad Nakhooda --- , South Africa Nicoletta B Jones --- , South Africa Paul N Hills --- , South AfricaGlobally the demand for forestry resources is booming, and consequently innovative approaches to cultivate valuable hardwoods, such as eucalypts, are crucial. Although micropropagation offers a means to clonally propagate desirable cultivars, this technique is often variety-specific for eucalypts. Thus, recalcitrant... -
Exploring the impact of rebranding on stakeholders: a case study of Hotel Management School NHL Stenden
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Anna Spenkelink --- , Rodney Westerlaken --- , Javed Suleri --- ,The purpose of this study is to provide a better insight into the impact of rebranding on stakeholders; the case for this study is the rebranding of the Hotel Management School (HMS). This research has explored how the stakeholders have... -
Online incentives and customer voice: The mediating role of community identification
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Miaoling Liu --- , China Bingcheng Yang --- , ChinaWe investigated the mediating role of virtual community identification on the relationship between online incentives and customer voice. We surveyed 369 customers from Apple (n = 198) and Huawei (n = 171) virtual communities. Structural equation modelling results showed that... -
Is the rand a commodity currency? A volatility spillover analysis
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Ayesha Sayed --- , South Africa Ailie Charteris --- , South AfricaSouth Africa is a major commodity exporter, yet it is not clear what impact volatility in commodity prices has on the volatility of its currency. In this study, we examine whether a comprehensive sample of commodities (metals, grains and energy)... -
Density effect on growth variables of eucalypt clones in a Nelder wheel experiment
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Franciele Alba da Silva --- , Brazil Sylvio Péllico Netto --- , Brazil Alexandre Behling --- , Brazil Henrique Soares Koehler --- , Brazil Ataídes Marinheski Filho --- , Brazil Cláudio Cerqueira --- , BrazilNelder’s systematic design enables studies of tree plantation spacing in relatively small areas, which is of great interest for forest planning. However, dependence between observations can arise with this method, making it difficult to use classic statistics for evaluating an... -
The multiplicity of left-to-right maxima in geometrically distributed words
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Archibald --- University of the Witwatersrand, South Africa A. Knopfmacher --- University of the Witwatersrand, South AfricaFor fixed m ≥ 1, we study the number of weak left-to-right maxima which occur exactly m times in words whose letters satisfy a geometric distribution. First, we find the generating function and two exact expressions for the mean. Thereafter... -
Life skills training as HIV/AIDS preventive strategy in secondary schools: evaluation of a large-scale implementation process
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Maretha J. Visser --- University of Pretoria,A life skills and HIV/AIDS education programme was implemented in secondary schools as a strategy to combat the spread of HIV/AIDS among school-going young people in South Africa. As part of a joint effort of the Departments of Health and... -
Phase III microbicide trial methodology: opinions of experienced expanded safety trial participants in South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Janneke van de Wijgert --- IATEC Foundation, Heidi Jones --- Population Council, Annalie Pistorius --- Health Professions Council of South Africa, Alana de Kock --- Infectious Disease Epidemiology Unit of the School of Public Health and Family Medicine, University of Cape Town, South Africa Mohlatlego Sebola --- Health Professions Council of South Africa, Barbara Friedland --- International Programs Division, Population Council, Anwar Hoosen --- Department of Microbiological Pathology, Medunsa Campus of the University of Limpopo, Nicol Coetzee --- UK National Health Service,In preparation for effectiveness trials of candidate vaginal microbicides, scientists are debating trial design and implementation challenges, including choice of control arm(s), product-sharing across arms, and visit schedules. This study involved a survey of South African women participating in an... -
Effect of a multicomponent behavioural PMTCT cluster randomised controlled trial on HIV stigma reduction among perinatal HIV positive women in Mpumalanga province, South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Karl Peltzer --- , South Africa Suat Babayigit --- , , USA Violeta J. Rodriguez --- , , USA Jenny Jean --- , USA Sibusiso Sifunda --- , South Africa Deborah L. Jones --- , , USABackground: We evaluate the impact a multicomponent, behavioural, prevention of mother to child transmission (PMTCT), cluster randomised controlled trial on HIV stigma reduction among perinatal HIV infected women in rural South Africa. Methods: In a cluster randomised controlled trial, twelve... -
Critical review of a revision of Psammophis (Linnaeus 1758) (Serpentes, Reptilia) by Frank Brandstätter
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Barry Hughes --- ,Publication in book form of an earlier thesis (Brandstätter 1995, 1996) has placed in the public domain what purports to be a thorough revision of what is taxonomically one of the most difficult of snake genera—the primarily African but also... -
Aggregation in Bibron's gecko, chondrodactylus bibronii
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Anita Meyer --- University of Stellenbosch, South Africa P. le FrasN. Mouton --- University of Stellenbosch, South AfricaAggregation behaviour in a rock‐dwelling gecko Chondrodactylus bibronii was investigated. In a laboratory setup, individuals were provided with an excess of shelters to determine whether limited availability of optimal shelters may be the cause of this species’ aggregation behaviour in... -
Measuring corporate failure risk: Does long short-term memory perform better in all markets?
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Hyeongjun Kim --- Yeungnam University, Korea Hoon Cho --- Korea Advanced Institute of Science and Technology, Korea Doojin Ryu --- Sungkyunkwan University, KoreaRecently, various corporate failure prediction models that use machine learning techniques have received considerable attention. In particular, using a sequence of a company's historical information, rather than just the most recent information, yields better predictive performance by adopting recurrent neural... -
Dominant tree selection for height estimation and its impact on site classification for African mahogany stands
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Matheus Oliveira Teixeira --- Federal University of Piauí, Brazil Andressa Ribeiro --- Federal University of Piauí, Brazil Gabriel William Dias Ferreira --- Colorado State University, USA Maurício Sangiogo --- , Brazil Antonio Carlos Ferraz Filho --- Federal University of Piauí, BrazilAfrican mahogany plantations are increasing in Brazil, especially those planted with the species Khaya grandifoliola C. DC. Despite the interest in establishing plantations, there is a lack of studies in management practices for the genus. This makes it difficult to... -
A research agenda for African smart public value governance – Insights from a webinar series
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Emamdeen Fohim --- University of Bern, Switzerland Adeelah Kodabux --- Middlesex University Mauritius, Mauritius Amar Seeam --- Middlesex University Mauritius, MauritiusThe article discusses key insights gained from a webinar series that the authors of this article launched when founding the “Centre for African Smart Public Value Governance” (C4SP). As a research centre that aims to improve the quality of public... -
A strong law of large numbers for non identically distributed Pettis integrable random sets in a general Banach space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. El Allali --- University Sidi Mohamed Ben Abdellah, FSTF, Morocco F. Ezzaki --- University Sidi Mohamed Ben Abdellah, FSTF, MoroccoA multivalued version of Cesàro mean convergence theorem is established. As a consequence, various convergence results of strong law of large numbers for pairwise independent Pettis integrable random sets in a Banach space without any additional geometric condition on the... -
Variations and extensions of the Gaussian concentration inequality, Part I
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Daniel J. Fresen --- University of Pretoria, South AfricaThe classical Gaussian concentration inequality for Lipschitz functions is adapted to a setting where the classical assumptions (i.e. Lipschitz and Gaussian) are not met. The theory is more direct than much of the existing theory designed to handle related generalizations... -
Which shrinkage is better? Portfolio selection with a cleaned random matrix
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Young C. Joo --- Shanghai University, China Sung Y. Park --- Chung-Ang University, KoreaCovariance matrix estimation is of great importance in formulating a portfolio. The sample covariance matrix, the most frequently used estimator, is well known to be unstable due to the estimation error, when the sample size is small. A shrinkage approach... -
Grazing capacity change on a small Mediterranean-type South African offshore island following the control of invasive alien European rabbits (Oryctolagus cuniculus)
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa --- Stellenbosch University, South AfricaInvasive alien species (IAS) are one of the most important factors driving extinction rates worldwide. Among the IAS, the impacts of introduced mammals on native biodiversity are most severe, with the European rabbit (Oryctolagus cuniculus) being the most problematic. Globally,... -
Transgenerational transmission in psychoanalysis: A phenomenology of dislocating errands
Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Maurice Apprey --- University of Virginia, USAIn the process of psychical transmission from one generation to the next, who asks what of whom? The evocative expression of an ‘errand’ suggests that a subject is sent on a mission, sent in error, wanders away, and returns home,... -
LovesCompany: evaluating the safety and feasibility of a mental health-focused online community for adolescents
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Anna Van Meter --- New York University Langone Health, USA Neha Agrawal --- Yeshiva University, USABackground: Adolescents are at risk for mental health (MH) disorders but are unlikely to seek services and may be reluctant to talk about their MH. An anonymous, online MH-focused community could help reduce suffering. However, online forums can also promote... -
Investigating stimulating factors for customer booking intentions on brand websites
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Marit de Vries --- NHL Stenden University of Applied Sciences, The Netherlands Niels Klein Poelhuis --- NHL Stenden University of Applied Sciences, The NetherlandsCustomers have ample opportunities regarding channels to use to book a hotel room: offline and online. In the online world, the options are using the hotel’s website, referred to as the brand website, or third party internet sites like online... -
Adults living with type 2 diabetes experiences of a randomised adapted diabetes nutrition education programme: a qualitative process evaluation
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Jane W Muchiri --- University of Pretoria, South Africa Gerda J Gericke --- University of Pretoria, South Africa Paul Rheeder --- University of Pretoria, South Africa -
Complete convergence for the maximal partial sums without maximal inequalities
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Fakhreddine Boukhari --- Abou Bekr Belkaid University, Algeria Nguyen Chi Dzung --- Institute of Mathematics, Vietnam Academy of Science and Technology, Vietnam Lê Vǎn Thaǹh --- Vinh University, VietnamThis work provides the necessary and sufficient conditions for complete convergence for the maximal partial sums of dependent random variables. The results are proved without using maximal inequalities. The main theorems can be applied to sequences of (i) m-pairwise negatively... -
Early selection for rust resistance in eucalypt progenies and implications for other traits of interest in tree breeding
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Daniele Aparecida Alvarenga Arriel --- Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, Brazil Lúcio Mauro da Silva Guimarães --- , Brazil Reginaldo Gonçalves Mafia --- , Brazil Edival Ângelo Valverde Zauza --- , Brazil Acelino Couto Alfenas --- Universidade Federal de Viçosa, BrazilPlanting of resistant clones is the main control strategy for rust caused by Austropuccinia psidii on eucalypts in Brazil. Phenotyping for resistance to rust is performed at the last stage of the breeding programme on genetic material preselected for growth... -
Brand personality and purchase intention: The dual-mediating effects of brand attachment and nostalgia proneness
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Fanyi Zhao --- Seoul School of Integrated Sciences and Technologies (aSSIST University), South Korea Fei Huang --- Seoul School of Integrated Sciences and Technologies (aSSIST University), South KoreaWe examined the roles of brand attachment and nostalgia proneness in the relationship between the brand personality and purchase intention. Participants were 352 Chinese consumers (during the collection of the questionnaires, age ranges were set, but specific age numbers were... -
On a weak law of large numbers and Lp -convergence for general random variables
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Qi Gao --- Henan Normal University, China Yu Miao --- Henan Normal University, ChinaIn the present paper, we consider a sequence of the general random variables, which include the sequences of martingale differences, and establish the weak law of large numbers and the convergence in Lp under some weaker conditions. -
Forecasting oil futures markets using machine learning and seasonal trend decomposition
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Ahhyun Kim --- Sungkyunkwan University, Korea Doojin Ryu --- Sungkyunkwan University, Korea Alexander Webb --- University of Wollongong, AustraliaCan machine learning improve prediction for seasonal commodity prices? We explore the effectiveness of a combined method that integrates seasonal trend decomposition using LOESS (STL) with machine learning (ML), referred to as STL-ML. We apply Extreme Gradient Boosting and Random... -
Random walk labelings of perfect trees and other graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sela Fried --- Israel Academic College, Israel Toufik Mansour --- University of Haifa, IsraelA random walk labeling of a graph G is any labeling of G that could have been obtained by performing a random walk on G. Continuing two recent works, we calculate the number of random walk labelings of perfect trees,... -
Mixed-effect modelling of Tectona grandis L.f. yield at stand-level
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Lucas Araujo Moura --- Federal University of Paraná, Brazil Allan Libanio Pelissari --- Federal University of Paraná, Brazil Luan Demarco Fiorentin --- Federal University of Paraná, Brazil Vinicius Costa Cysneiros --- Federal University of Santa Catarina, Brazil Luciano Rodrigo Lanssanova --- Federal Institute of Science, Technology and Education of Mato Grosso, Brazil Sidney Fernando Caldeira --- Federal University of Mato Grosso, BrazilThe prediction of volume from commercial plantations is essential to manage Tectona grandis L.f. stands. However, the assumptions of regression, especially homoscedasticity and residual independence, are often ignored when fitting longitudinal regression models. Thus, this work aimed to build a... -
Financial analysts’ information role on brand capital
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Yifei Chen --- Southwestern University of Finance and Economics, China Dan Palmon --- , USA Li Zhang --- , USASelf-created intangible assets are crucial in firm valuations but are difficult for investors to evaluate because they are not recognised in financial statements. This study examines whether sell-side financial analysts contribute to the market’s understanding of the value of brand... -
Prediction of ambient air pollution with regression approach using machine learning
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bachandeep Singh Bhathal --- University Institute of Computing, Chandigarh University, India Gaurav Gupta --- Punjabi University, India Brahmaleen Kaur Sidhu --- Punjabi University, IndiaAccurate air quality prediction is vital for managing pollution and protecting public health. This study evaluates the performance of three machine learning models – Decision Tree Regression (DTR), Linear Regression (LR), and Random Forest Regression (RFR) – to forecast the... -
Silvicultural intervention during re-establishment to reduce mortality in eucalypt plantations, South Africa: early results
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ullrich Hechter --- Mondi South Africa (Pty) Ltd, South Africa Keith M Little --- School of Natural Resources Management, Nelson Mandela University, South Africa Julian Moreno Chan --- Institute for Commercial Forestry Research, South Africa Jacob Crous --- Sappi Shaw Research Centre, South AfricaHigh mortality negatively affects rotation-end yield in pulpwood eucalypt stands. Most forest companies in South Africa aim to achieve +90% survival. To ensure optimal survival, companies implement preventative measures such as the use of high-quality plants and optimum re-establishment practices,... -
Seasonal consumption of Thamnochortus spicigerus (Restionaceae) by eland is associated with plant sex and nutrient status
Item type: Journal Article • Journal: African Zoology • Authors: Petro Botha --- Department of Botany and Zoology, Stellenbosch University, South Africa Bruce Anderson --- Department of Botany and Zoology, Stellenbosch University, South AfricaHistoric distributions of large herbivores in the Fynbos Biome remain poorly described and, despite ongoing reintroductions, their dietary strategies and forage selection in the Fynbos Biome are understudied. We monitored an introduction of eland into Cape Flats Dune Strandveld vegetation,... -
Enhancing medical diagnosis with a machine learning-based symptom checker for health assessment
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sita Yadav --- Army Institute of Technology, India Manisha Dudhedia --- Marathwada Mitra Mandal’s College of Engineering Pune, India P. G. Chilveri --- CILPL, India Reena Mahapatra Lenka --- Symbiosis International (Deemed) University, India Radhika Vikas Kulkarni --- Vishwakarma Institute of Technology, India K. Nagaiah --- ICFAI University Raipur Chhattisgarh, IndiaThe growing incidences of chronic illnesses and increased complexity of medical diagnoses point to the desire to have effective, precise, and timely diagnostic instruments to assist medical personnel. The goal of the current study is to develop an ML-based system...
