Browsing by Title
Now showing items 30067-30086 of 35418
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Simplified high-level investigation methodology for energy saving initiatives on deep-level mine compressed air systems
(North-West University, 2018)Marginal deep-level mines in South Africa are struggling due to current economic conditions. Reducing operating cost on these marginal mines will increase their profitability. Electricity is one of the fastest growing ... -
Simplified performance monitoring of energy systems
(IEEE, 2014)Large energy consumers face mounting pressure due to recent energy cost increases, as well as regulatory requirements and limitations. Therefore, energy performance monitoring is an essential component of many modern ... -
Simplifying UAS control and improving automation using an RBFNN for gesture and activity recognition
(North-West University (South Africa), 2021)A simplistic view of an unmanned aircraft is that it is an aircraft with a computer system and a radio-link that replaces the pilot. The unmanned aircraft merely forms part of the total system referred to as an Unmanned ... -
Simposium oor maatskaplike werk gehou op 27 Maart 1969 by die P.U. vir C.H.O. tydens die eeufeesviering van die Teologiese skool van die GereformeerdeKerk in Suid-Afrika en Potchefstroom se Universiteit vir Christelike hoër Onderwys
([Place of publication not identified] : [publisher not identified], 1969) -
Simpson, T. 2021. History of South Africa from 1902 to the present [Book review]
(South African Society for History Teaching (SASHT) under the patronage of the Department of Humanities Education in the Faculty of Education at the University of Pretoria, 2021)The book explores South Africa’s journey from the aftermath of the Second Anglo-Boer War (1899–1902) to the democratic dispensation. Drawing on documentary evidence including letters, diaries, eyewitness accounts and ... -
Simulasie in Geskiedenis in die primêre skool (I).
(Historical Society of South Africa / Historiese Genootskap van Suid-Afrika, 1983) -
Simulasie in Geskiedenis in die primêre skool (II).
(Historical Society of South Africa / Historiese Genootskap van Suid-Afrika, 1983) -
Simulated systemic recurrent Mycoplasma infection in rats induces recurrent sickness responses without residual impairment in spatial learning and memory
(Elsevier, 2012)In spite of their prevalence and importance, recurrent acute infections seldom have been investigated in the laboratory. We set out to measure fever and sickness behaviour in simulated recurrent Mycoplasma infection; Mycoplasma ... -
Simulating effects of aerosols on rainfall in southern Africa
(Springer, 2019)Climate-aerosol model ECHAM5-HAM is employed to study effects of aerosol air pollution on rainfall in southern Africa. Aerosols effect the climate through light scattering and absorption, modification of cloud properties, ... -
Simulating operational improvements on mine compressed air systems
(North-West University (South Africa). Potchefstroom Campus, 2018)As the operational costs of deep-level mines increase and gold ore grades decrease, profitability in the South African gold mining sector is becoming a challenge. Electricity tariff increases moreover contribute to the ... -
Simulating operational improvements on mine compressed air systems
(Univ Stellenbosch, 2018)Compressed air systems are one of the most significant energy users on mines, with a contribution of about 20 per cent to the total electrical energy consumption on a mine. Research has shown that these compressed air ... -
Simulating precipitation and temperature in the Lake Champlain basin using a regional climate model: limitations and uncertainties
(Springer, 2020)The Lake Champlain Basin has socioeconomic and ecological significance for the Northeastern United States and Quebec, Canada. Temperatures and extreme precipitation events have been increasing across this region over the ... -
Simulating the injection of magnetized plasma without electromagnetic precursor wave
(Elsevier, 2018)This note aims to explain how to inject magnetized plasma through an open boundary into the simulation domain of a particle-in-cell simulation. If the magnetic field at the boundary is const ... -
Simulation and characterisation of a concentrated solar power plant
(2015)Concentrated solar power (CSP) is an efficient means of renewable energy that makes use of solar radiation to produce electricity instead of making use of conventional fossil fuel techniques such as burning coal. The aim ... -
Simulation and control of a small scale sodium sulphate salt splitting plant
(North-West University (South Africa)., 2022)Base metal refineries produce sodium sulphate solutions as a waste product in the precipitation step. The solution that is formed generally has a concentration of around 100 g Na2SO4/L. Discharging solutions with such high ... -
Simulation and evaluation of flow boiling heat transfer correlations for R-744
(2015)A need to reduce the use of conventional refrigerants in vapour-compression cycles has shifted attention towards natural refrigerants, one of which is carbon dioxide (CO2 or R-744). This study focuses on the evaluation of ... -
Simulation and optimisation of gas storage tanks filled with capacitance
(North-West University, 2003)The Pebble Bed Modular Reactor (PBMR) is a revolutionary small, compact and safe nuclear power plant. It operates on a direct closed Brayton cycle. One of the unique features of this concept is its load following capability ... -
A simulation approach to reconciling customs and trade risk associated with cross-border freight movements
(Stellenbosch Univ., 2016)Suider-Afrika is krities afhanklik van verhoogde uitvoer om ekonomiese groei te bevorder. Logistieke tekortkominge beperk uitvoer, en oorgrens vertragings is ’n sleutelfaktor wat koste verhoog en onsekerheid ... -
A simulation approach to the optimized design of cross-border operations
(IEEE, 2015)Simulations of transport operations have been widely used for scenario analysis and the investigation of competing strategies to optimize traffic flows and logistics operations. This paper applies a simulation approach to ... -
A simulation comparison of aggregation periods for estimating correlations within operational loss data
(Incisive Risk Information, 2016)We investigate the differences in the values of correlations based on different aggregation periods of time series loss data. The aggregation periods considered for this study were annual, quarterly and monthly, ie, the ...
