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Macadamia cultivar evaluation in Natal
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Allan --- Department of Horticultural Science, Republic of South AfricaVegetatively propagated macadamia cultivars were grown in six ecologically different areas in Natal. Nut quality was tested over a number of years. The warm, moist north coast area is best for most cultivars tested with Keaau, Ka'u, Kakea and Beaumont... -
Genetic relationships amongst macadamia varieties grown in South Africa as assessed by RAF markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.P. Peace --- , Australia P. Allan --- Discipline of Horticultural Science, South Africa V. Vithanage --- , Australia C.N. Turnbull --- Department of Agricultural Sciences, U.K B.J. Carroll --- , AustraliaMacadamia is an important horticultural crop of South Africa, and the major cultivars grown have a wide range of attributes. These cultivars originated from diverse backgrounds, but the genetic relationships between them are unclear. Here we describe new insights into... -
Self-orthogonal codes from some Bush-type Hadamard matrices
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dean Crnković --- Department of Mathematics, Croatia B.G. Rodrigues --- School of Mathematical Sciences, South AfricaBy means of a construction method outlined by Harada and Tonchev, we determine some non-binary self-orthogonal codes obtained from the row span of orbit matrices of Bush-type Hadamard matrices that admit a fixed-point-free and fixed-block-free automorphism of prime order. We... -
Hilbert-type inequalities for Hilbert space operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mario Krnić --- Faculty of Electrical Engineering and Computing, CroatiaIn this paper we establish a general form of the Hilbert inequality for positive invertible operators on a Hilbert space. Special emphasis is given to such inequalities with homogeneous kernels. In some general cases the best possible constant factors are... -
Growth of post-weaning abalone Haliotis midae fed commercially available formulated feeds supplemented with fresh wild seaweed
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TS Dlaza GW Maneveldt C ViljoenThe effect of five formulated feeds supplemented with fresh wild seaweed on the growth of post-weaning juvenile abalone Haliotis midae (6–20 mm shell length) was investigated by means of a growth trial at a commercial abalone farm over a period... -
Performance of the Androgen Deficiency in Aging Male questionnaire for the clinical detection of androgen deficiency in black sub-Saharan African men with Type-2 diabetes mellitus
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Theophilus E Ugwu --- Department of Medicine, Nigeria Rosemary T Ikem --- Department of Medicine, NigeriaBackground: The Androgen Deficiency in Aging Male (ADAM) questionnaire is increasingly popular for evaluation of androgen deficiency (AD) in sub-Saharan African men with type 2 diabetes mellitus (DM). However, its reliability in this population is unknown. -
A contextual assessment of the FADAMA III programme in Iwo, Osun State, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ayokunle Olumuyiwa Omobowale --- Department of Sociology, Nigeria Olukunle Tayo Akinola --- Department of Sociology, NigeriaFADAMA is a World Bank development initiative aimed at improving productivity and income of Nigerian farmers through relative science and technological inclusion as well as community and group participation. Following the success of Fadama I and II projects, the government... -
Panopticism, impartial spectator and digital technology
Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Mark Rathbone --- North-West University, South AfricanPanopticism is Michel Foucault’s term for the internalisation of surveillance and cultural control that is closely linked to the panopticon or surveillance architecture (associated with prisons) of Jeremy Bentham during the 18th and 19th centuries. The purpose of this article... -
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... -
Nonlinear evolution equations via resolvent operators on Hadamard manifolds
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Vo Minh Tam --- Dong Thap University, VietnamThe purpose of this work is to study new systems given by evolution equations via resolvent operators for solving Yosida inclusion problems, equilibrium problems and fixed point problems on Hadamard manifolds. Then we show that the systems have a unique... -
Rayleigh quotients of Dillon’s functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Aditi Kar Gangopadhyay --- Indian Institute of Technology Roorkee, India Sugata Gangopadhyay --- Indian Institute of Technology Roorkee, India Mansi Goyal --- Indian Institute of Technology Roorkee, India Aleksandr Kutsenko --- Novosibirsk State University, Russia Bimal Mandal --- Indian Institute of Technology Jodhpur, IndiaThe Walsh-Hadamard spectrum of a bent function uniquely determines a dual function. The duality mapping is the only isometric mapping on the set of bent functions apart from its automorphisms that preserve bentness. The Hamming distance between a bent function...