Browsing Research Articles (Logistics) by Title
Now showing items 31-50 of 64
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Macro-logistics trends : indications for a more sustainable economy
(AOSIS OpenJournals, 2013-07)The North American and South African logistics cost calculation-time series are the two longest-running statistical series available worldwide. These calculations indicate that transportation’s contribution to logistics ...
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Modelling the effects of the sterile insect technique applied to Eldana saccharina Walker in sugarcane
(Operations Research Society of South Africa (ORSSA), 2012)A mathematical model is formulated for the population dynamics of an Eldana saccharina Walker infestation of sugarcane under the influence of partially sterile released insects. The model describes the population growth ...
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The number of pickers and stock-keeping unit arrangement on a uni-directional picking line
(Southern African Institute for Industrial Engineering, 2014-11)The order picking process is often the single largest expense in a distribution centre (DC). The DC considered in this paper uses a picking line configuration to perform order picking. The number of pickers in a picking ...
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On the efficient solvability of a simple class of nonlinear knapsack problems
(Operations Research Society of South Africa, 2008)ENGLISH SUMMARY : In this paper the e cient solvability of a class of nonlinear knapsack problems are investigated by means of the problem's necessary and su cient conditions. It is shown that, from the general theory, it ...
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On the solution of petrochemical blending problems with classical metaheuristics
(Operations Research Society of South Africa, 2016)ENGLISH SUMMARY : In this paper a comparison of classical metaheuristic techniques over different sizes of petrochemical blending problems is presented. Three problems are taken from the literature and used for initial ...
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Operations Research : an indispensable toolkit for the logistician
(Operations Research Society of South Africa, 2005)ENGLISH SUMMARY : This paper traces the origin of the word logistics, outlines its conceptual evolution, and explains its meaning in contemporary usage. The background that led to the introduction of Logistics Management ...
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Optimising an integrated crop-livestock farm using risk programming
(Operations Research Society of South Africa, 2004)ENGLISH SUMMARY : Numerous studies have analysed farm planning decisions focusing on producer risk preferences. Few studies have focussed on the farm planning decisions in an integrated croplivestock farm context. Income ...
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Predicting the throughput of grain products at the multipurpose terminal at the Port of Cape Town
(AOSIS Publishing, 2016)ENGLISH SUMMARY : Background: Ports provide vital links in the maritime supply chains on which the trading of countries depend, and their efficiency and performance can contribute largely to the international competitiveness ...
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A procurement decision model for a video rental store : a case study
(Operations Research Society of South Africa, 2007)ENGLISH SUMMARY : A procurement decision model for a video rental store is presented in this paper. The model is based on inventory management, but many classical inventory management principles are inappropriate since ...
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Provincial logistics costs in South Africas Western Cape province : microcosm of national freight logistics challenges
(AOSIS Publishing, 2015-09)Background: Logistics costs are most commonly measured on a national level. An understanding of the provincial logistics landscape can add significant value both to provincial and national policy interventions; such ...
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Prysverlagings op voorraad met ’n dalende vraag
(Operations Research Society of South Africa, 2004)AFRIKAANSE OPSOMMING : Hierdie artikel stel ’n heuristiese benadering voor om die verliese op voorraad met ’n dalende vraag en onbekende tydshorison te minimeer. Die twee metodes wat voorgestel word, gebruik ’n benaderde ...
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Quantifying freight transport volumes in developing regions : lessons learnt from South Africa's experience during the 20th century
(Taylor & Francis, 2012-12)A number of attempts were made during the 20th century to develop national freight flow information for South Africa. This paper discusses these contributions and attempts to identify the major reasons why the research did ...
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Rail renaissance based on strategic market segmentation principles
(University of South Africa (Unisa), 2012)South Africa’s annual State of Logistics survey indicates that the majority of dense, long-distance surface freight is transported by road, placing severe constraints on the country’s freight logistics infrastructure ...
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The relationship between stunting and overweight among children from South Africa : secondary analysis of the National Food Consumption Survey – Fortification Baseline I
(Health & Medical Publishing Group, 2016-01)ENGLISH SUMMARY : Background: Globally, in children the prevalence of overweight and obesity is increasing, and this is associated with an increased risk of noncommunicable diseases in adulthood. There is a need to examine ...
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A review of dietary surveys in the adult South African population from 2000 to 2015
(MDPI, 2015-09)One serious concern of health policymakers in South Africa is the fact that there is no national data on the dietary intake of adult South Africans. The only national dietary study was done in children in 1999. Hence, it ...
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Revitalisation of branch lines in South Africa : a long-term view for sustainability
(AOSIS Publishing, 2010-11-30)South Africa’s national railway management is considering the further closing of a number of branch lines due to profitability pressures from stakeholders. This paper cautions against a myopic approach to such closures. ...
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Selection and scheduling of jobs with time-dependent duration
(Operations Research Society of South Africa, 2007)ENGLISH SUMMARY : In this paper two mathematical programming models, both with multiple objective functions, are proposed to solve four related categories of job scheduling problems. All four of these categories have the ...
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Simulation modelling as a decision support in developing a sterile insect-inherited sterility release strategy for Eldana saccharina (Lepidoptera: Pyralidae)
(Florida Entomological Society, 2016)ENGLISH SUMMARY : A user-friendly simulation tool for determining the impact of the sterile insect technique/inherited sterility technique (SIT/IS) on populations of the African sugarcane stalk borer, Eldana saccharina ...
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Single fixed crane optimisation within a distribution centre
(Southern African Institute for Industrial Engineering, 2011-11)This paper considersthe optimisation of the movement of a fixed crane operating in a single aisle of a distribution centre. The crane must move pallets in inventory between docking bays, storage locations, and picking ...
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SKU assignment to unidirectional picking lines using correlations
(Operations Research Society of South Africa, 2015-07)A real life order picking system consisting of a set of unidirectional picking lines is inves- tigated. Batches of stock keeping units (SKUs) are processed in waves defined as a set of SKUs and their corresponding store ...