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Causes, adverse effects and control of soil compaction
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. T.P. Bennie --- Department of Soil Science, G.N. Krynauw --- Department of Agriculture,The causes, adverse effects and control of soil compaction, with special reference to Southern African conditions, are reviewed. The main causes for soil compaction are the well-rounded and -sorted fine sand fraction of the aeolian sandy soils combined with compression... -
Soil compaction by tractor tillage in horticultural fields at Molelwane research farm, Mafikeng, North West Province
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.A. Materechera --- Crop Science Department, Faculty of Agriculture, Science & Technology, Republic of South Africa K. Gaobope --- Crop Science Department, Faculty of Agriculture, Science & Technology, Republic of South AfricaThe study was prompted by concerns that soil compaction in horticultural fields at the University research farm was limiting the performance of fruit trees and vegetable crops after fifteen years of conventional tillage with tractors. Soil penetrometer resistance and bulk... -
Soil compaction under sugar cane (Saccharum hybrid sp.) cropping and mechanization in Mauritius
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.R. Ng Cheong --- , Mauritius K.F. Ng Kee Kwong --- , Mauritius C.C. Du Preez --- Department of Soil, Crop and Climate Sciences, South AfricaFarm machinery is increasingly used in sugar cane production in Mauritius and is expected to cause soil compaction. A study was undertaken to ascertain whether the five major cane-growing soil groups of Mauritius were being compacted as a result of... -
Exploring the Impact of Self-Directed Team Learning in an Air Traffic Control Environment
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- University of Pretoria, Christiaan G. Joubert --- University of Pretoria, Mike van der Linde --- University of Pretoria, Paul J. van Staden --- University of Pretoria,Experienced military air traffic controllers (25 respondents, males = 15, females = 10, years of experience = less than one year = 5 respondents, more than one year but less than three years = 11 respondents and more than three... -
Challenges and coping strategies of orphaned children in Tanzania who are not adequately cared for by adults
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Marguerite Daniel --- Department of Health Promotion and Development, Norway Angela Mathias --- Department of Health Promotion and Development, NorwayOrphaned children in poor rural communities sometimes have no adult who is able to care for them or else the adult caregiver is not able to provide adequate care. Tanzania remains one of the poorest countries in the world, and... -
Occupational safety and health issues on road construction sites in sub-Saharan Africa: A case study from Uganda
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Stephen Nyende-Byakika --- Department of Civil Engineering, South AfricaThe road construction industry in Uganda has been boosted in recent years in an effort to foster economic development. Safety practices within the industry, however, leave a lot to be desired and this exposes workers to unnecessary occupational risks. This... -
Human trafficking in the hotel industry in the Netherlands: the fine line between service, responsibility and liability
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Erwin van der Graaf --- Accor Hotels, The NetherlandsHuman trafficking is the fastest growing form of organised crime and the biggest source of income for criminals in Europe. Within the prostitution sector, there is a shift towards less visible forms such as hotel prostitution. About half of all... -
Human trafficking in the hospitality industry in the Netherlands
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Gonneke Kragt --- , the NetherlandsThis article explores the level of preparedness of front office (FO) employees to recognise and react to human trafficking (HT). The information used for this research was based on relevant literature related to the subject. Also, data for this study... -
Detection of driver fatigue driving behaviour based on deep learning algorithm from the perspective of traffic psychology
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yan Fan --- , ChinaIn modern times, with mass transportation systems, driver fatigue has become one of the main causes of traffic accidents. The development of intelligent transportation systems holds great promise for safety. Increasingly, policies, laws, and regulations will consider artificial intelligence applications... -
Objective understanding of five front-of-pack labels among consumers in Nelson Mandela Bay, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Tracey Ruth Hutton --- , South Africa Annelie Gresse --- , South Africa -
Drug trafficking, use, and HIV risk: The need for comprehensive interventions
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Jessie Mbwambo [d186e18] Sheryl A. McCurdy Bronwyn Myers Barrot Lambdin Gad Paul Kilonzo Pamela KaduriThe rapid increase in communication and transportation between Africa and other continents as well as the erosion of social fabric attended by poverty, ethnic conflicts, and civil wars has led to increased trafficking and consumption of illicit drugs. Cannabis dominates... -
Delta-shocks and vacuums as flux-approximation limit of solutions to the Aw-Rascle model with time-dependent source
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mengqi Cui --- Department of Mathematics, Yunnan Normal University, P.R. China Shuai Fan --- Department of Mathematics, Yunnan Normal University, P.R. China Yu Zhang --- Department of Mathematics, Yunnan Normal University, P.R. ChinaThe flux-approximation limit of solutions to the Aw-Rascle (AR) traffic flow model with time-dependent source is considered. First, the Riemann problem containing flux perturbation and generalized Chaplygin gas (GCG) pressure is solved. Then, it is proved that, as the flux...
