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Stride and translation invariance in CNNs
(Southern African Conference for Artificial Intelligence Research, 2020)
Convolutional Neural Networks have become the standard for image classification tasks, however, these architectures are not invariant to translations of the input image. This lack of invariance is attributed to the use of ...
Tracking translation invariance in CNNs
(Southern African Conference for Artificial Intelligence Research, 2020)
Although Convolutional Neural Networks (CNNs) are widely used, their translation invariance (ability to deal with translated inputs) is still subject to some controversy. We explore this question using translation-sensitivity ...
Extension of projection mappings
(Taylor & Francis, 2020)
We provide sufficient conditions for a map between projection lattices of semi-finite von Neumann algebras to be extended to a Jordan *-homomorphism. These conditions are sufficiently general for the procedures developed herein ...
Comparing beverage consumption, physical activity and anthropometry among young adult urban- and rural-dwelling African women
(Medpharm, 2020)
Beverage consumption, physical activity, body mass index and waist circumference were compared in age-matched (aged 18–
30 years) groups of young South African women from urban (n = 78) and rural (n = 94) settings. Obesity ...
Association between dietary adherence, anthropometric measurements and blood pressure in an urban black population, South Africa
(Medpharm, 2020)
Objectives:
The aim was to determine participants’ dietary adherence by calculating a diet adherence score based on the Dietary Approaches to Stop Hypertension (DASH)-style diet; (2) to determine if there was an association ...
The effect of coal size on PM2.5 and PM-bound polycyclic aromatic hydrocarbon (PAH) emissions from a domestic natural cross-draft stove
(Elsevier, 2020)
Residential coal combustion has played an important role in the domestic energy supply of Northern China for many decades and will do so for the foreseeable future, although it is also an important contributor to severe ...
The relationship between female adiposity and physical attractiveness amongst adults in rural Ranaka village, Botswana
(Medpharm, 2020)
Objective:
The aim was to assess the relationship between female adiposity and physical attractiveness among men and women
in Botswana.
Design:
A cross-sectional study was undertaken.
Setting:
Ranaka rural village, ...
Autonomic activity and its relationship with the endogenous cardiotonic steroid marinobufagenin: the African-PREDICT study
(Taylor & Francis, 2020)
Aim: Marinobufagenin (MBG), a cardiotonic steroid and a natriuretic hormone, is elevated in response to high salt diet consumption. In animal models salt intake stimulates adrenocortical MBG secretion via increased angiotensin ...
Nonparametric estimation of the cross ratio function
(Springer, 2020)
The cross ratio function (CRF) is a commonly used tool to describe local dependence between two correlated variables. Being a ratio of conditional hazards, the CRF can be rewritten in terms of (first and second derivatives ...
Goodness-of-fit tests in conditional duration models
(Springer, 2020)
We propose specification tests for the innovation distribution in conditional duration models. The new tests are based either on the cumulative distribution function, or on exponential transforms such as the Laplace transform ...