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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 ...
The influence of the roof and floor geological structures on the ash composition produced from coal at UCG temperatures
(Taylor & Francis, 2020)
The mineralogy of the ash and slag formed at typical UCG temperatures were investigated using a bituminous coal from the Theunissen UCG site in the Free State province of South Africa. The ash and slag samples were produced ...
Moisture transport during contact sorption drying of coal fines
(Taylor & Francis, 2020)
Studies have shown that contact sorption drying is a feasible technique to dewater fine (+0.15mm–0.5mm) and ultra-fine (−0.15 mm) coal. The aim of this article is to further investigate the drying mechanism involved. It ...
Contact sorption: a method to reduce the moisture content of coal fines
(Taylor & Francis, 2020)
This paper introduces contact sorption with ceramic sorbents as a method to reduce the moisture content of coal fines produced by coal processing plants. The proposed method was tested on laboratory scale where ceramic ...
Effect of 3d transition metal substitutional dopants and adatoms on mono layer TcS2 ab initio insights
(Elsevier, 2020)
Within the spin polarized density functional theory formalism, the properties (structural, magnetic, electronic and optical) of transition metal (TM) substitutional doping as well as adsorption on monolayer TcS2 has been ...
Adsorption and coadsorption of single and multiple natural organic matter on Ag (1 1 1) surface: a DFT-D study
(Elsevier, 2020)
The nature of the interaction of low molecular weight natural organic matter (NOM) with the Ag (1 1 1) surface is of crucial importance in the environment. The low molecular weight organics used in this study are formic ...
Seasonal variation of hydrochemical characteristics of open-pit groundwater near a closed metalliferous mine in O’Kiep, Namaqualand Region, South Africa
(Springer, 2020)
In this study, the hydrochemical characteristic changes of open-pit groundwater (OPGW) near a closed metalliferous mine proposed for drinking and irrigation usage were investigated. Water samples from an OPGW in O’Kiep ...
Up-flow vs downflow anaerobic digester reactor configurations for treatment of fats-oil-grease laden poultry slaughterhouse wastewater: a review
(IWA Publishing, 2020)
The process of anaerobic digestion has been and still remains the most efficient, cost effective and environmentally benign treatment process for poultry slaughterhouse wastewater (PSW). The PSW is characterized by a high ...
Comparative analysis of brewing wastewater and lactate as carbon sources for microbial community treating acid mine drainage in anaerobic MBBR systems
(Taylor & Francis, 2020)
This study investigated the effect of carbon sources (n = 2) on the performance of a microbial community in an anaerobic moving-bed biofilm reactor (MBBR) treating acid mine drainage (AMD). The 1.5 L anaerobic MBBR was ...