Esbeth Van Dyk

Esbeth Van Dyk
iKhanyisa Pty Ltd

Doctor of Philosophy

About

32
Publications
20,403
Reads
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170
Citations
Citations since 2017
7 Research Items
82 Citations
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201720182019202020212022202305101520
Introduction

Publications

Publications (32)
Article
The South African fruit industry is concerned with increasing losses, both financially and of the produce itself, linked to temperature breaks in the export cold chain. To determine the cause(s) of temperature breaks along their export cold chains of table grapes, Company X, a prominent fruit exporter, requested an independent enquiry be conducted...
Article
Full-text available
Blueberries are highly perishable and temperature sensitive. The main purpose of the study was to determine whether logistics processes in the beginning stages of the blueberry supply chain have an influence on the temperature profiles and quality of the fruit further downstream. Temperature trials were conducted on three farms in the Gauteng and t...
Article
Full-text available
Background: Fruit is an important export commodity for South Africa and accounts for 35% of its agricultural exports. South Africa is the second largest citrus exporter in the world, behind Spain. Maintaining the postharvest cold chain is key to ensuring that fruit quality meets export standards. Objectives: The main objectives of this research we...
Article
Full-text available
Background: A major concern plaguing South African pome fruit exporters is the volume of fruit going to waste during the export process. The senescence of fruits and the deterioration in its quality are accelerated by an increase in temperature. Thus, the first step in ultimately extending the shelf life of exported pome fruit and decreasing the ri...
Article
Abstract: Macro-level logistics cost and flow modelling have highlighted intermodal solutions as a means of optimising key South African (SA) freight corridors. This paper explores the critical success factors for translating the macro opportunity to a sustainable intermodal solution for the Fast-Moving Consumer Goods (FMCG) sector. The study ident...
Article
Full-text available
Background: Many participants in the South African wine industry still exhibit low supply chain maturity in the management of their supply chains. This hampers export performance and ultimately client satisfaction. The development and tracking of appropriate metrics are key steps in improving supply chain performance.Objectives: The purpose of this...
Conference Paper
Full-text available
Wine cellars in South Africa are looking for ways to improve profitability. Improving the performance of their supply chains may lead to increased profitability, and will definitely increase competitiveness. Performance measurement can be used as a tool to collect information for making supply chain decisions. Currently there is no performance meas...
Article
Full-text available
Background: South Africa exports a large variety of different fruit types and cultivars worldwide. Yet, there is concern in the South African fruit industry that too much fruit and money is lost each year due to breaks along the fresh fruit export cold chain.Objective: The objective of this article was to identify the influence of logistics activit...
Conference Paper
The South African (SA) wine industry is under performing due to a lack of supply chain management knowledge. Numerous studies in benchmarking and performance measuring have been conducted in a variety of industries, but little was developed for the wine industry. The aim of this article is to propose a methodology for the construction of a performa...
Conference Paper
Full-text available
The South African (SA) wine industry is underperforming due to a lack of supply chain management knowledge. Numerous studies in benchmarking and performance measuring have been conducted in a variety of industries, but little was developed for the wine industry. The aim of this article is to propose a methodology for the construction of a performan...
Article
Full-text available
There is concern in the South African fruit industry that a large amount of fruit and money is lost every season due to breaks in the fruit export cold chain. The possibility of a large percentage of losses in a significant sector of the economy warranted further investigation. This article attempted to highlight some of the possible problem areas...
Article
Full-text available
Copyright: 2008 Sabinet online As a direct result of the 9-11 New York attack all modes of freight and passenger transportation were scrutinised for vulnerabilities. Over 90% of international trade takes place via sea transport for at least some part of the supply chain and as a result there has been a drive to better secure maritime transportation...
Article
Full-text available
The importance of logistics and supply chain management for the South African economy was re-emphasised by the findings of the CSIR’s third annual State of Logistics Survey. To meet current and future demands, the research agenda for logistics needs to be wider than the traditional (mainstream) focus. System inefficiencies as well as specific non-t...
Article
Full-text available
Apart from work in the mining industry during the 1950s, the first real Operations Research (OR) group in South Africa was established at CSIR in the early 1960s. Those initially involved in this group played a significant role in establishing OR at various universities in South Africa. The OR group at CSIR did however continue and today the group...
Technical Report
Full-text available
While the third State of Logistics survey in 2006 focused on the implementation of logistics strategies in a developing economy, the theme for this year’s study is logistics for regional growth and development. South Africa has a leading role to play in the development of the southern African region and is well positioned to take up this challenge....
Article
Full-text available
http://66.102.9.104/search?q=cache:hTmpGu7LpzUJ:dip.sun.ac.za/~vuuren/papers/fruitlog.pdf+%22Modelling+the+South+African+fruit+export+infrastructure:+A+case+study%22&hl=en&ct=clnk&cd=2&gl=za A description is provided of work performed as part of the fruit logistics infrastructure project commissioned by the South African Deciduous Fruit Producers’...
Article
Full-text available
Copyright: 2005 Operations Research Society of South Africa (ORSSA) This paper gives an overview of a discrete-event simulation study that was performed on pallet movement at Fresh Produce Terminals in the port of Durban, South Africa. The study formed part of an extended study of the logistics infrastructure of the South African fresh fruit indust...
Article
This paper presents the concerns for the safety of consumers, in relation to phytosanitary issues; residues of crop protection products and bio-terrorism. Traceability gives the ability to trace and follow a food, feed, food-producing animal or substance intended to be or expected to be incorporated into a food or feed in all stages of production,...
Article
Full-text available
Copyright: 2004 Operations Research for South Africa This paper gives an overview of a study that was done on the logistics infrastructure used by the South African fruit industry. Given the increasing production and export volumes, development of new markets and the shortage of logistics infrastructure capacity during peak seasons, the SA fruit in...
Article
Full-text available
Controlling fruit supply chains is complex. As in other industries the supply chains are developing towards more demand driven chains. Given the nature of the fruit produce, production is hard to control based on the demand. The South African fruit market has to deal with these developments, together with the recent liberalisation of its fruit indu...
Article
A new multicriteria decision aid, QualScal, is applied to the problem of selecting an extramural Fisheries R&D portfolio in the Ministry of Agriculture, Fisheries and Food. QualScal has been developed for the situation where the characteristics of the decision alternatives cannot be readily quantified. The decision-maker is only required to state e...
Chapter
A multidimensional scaling model, QualScal, is developed for the case where the decision maker is only prepared to make qualitative comparisons for pairs of policies, stating whether he is indifferent between two policies or which one he prefers. Quantitative distance information is derived using the successive neighbour method. The scaling is done...
Article
A tractor-trailer problem, with full load, from the class of combined routeing and scheduling problems is described. Distinctive features of the problem are: movements must be carried out within certain time windows; subsets of movements are linked in the sense that they must be executed in a certain order; and different priorities are attached to...
Article
Abstract The dynamics,of chains and networks provides a challenge for the linear decision making process, as chain managers tend to address specific issues and situations in isolation, rather than considering the whole chain,under management.,The results of many research projects and reports from companies,continually highlight the need to enhance...
Article
Full-text available
Copyright: 2007 Operations Research Society of South Africa (ORSSA) Apart from work in the mining industry during the 1950s, the first real Operations Research (OR) group in South Africa was established at CSIR in the early 1960s. Those initially involved in this group played a significant role in establishing OR at various universities in South Af...
Article
Full-text available
This article provides a brief overview of the current State of Logistics and government’s response in terms of the National Freight Logistics Strategy. It reviews focus areas in international and local logistics research that were used to inform the development of a framework within which research themes are identified. Such a locally relevant agen...
Article
2007: Operations Research Society of South Africa (ORSSA) and Operations Research practice in Africa (ORPA) The goal of the study is to lend decision support to management a a wine cellar in three areas of expertise, with Wamakersvallei Winery serving as a special case study. This decision support system is to be delivered in the form of Excel spre...
Article
Full-text available
This survey highlights that South Africa's core structural problems are far worse than expected: Logistics cost represents a considerable percentage of the GDP (14.7% or R180bn). We spend more on transport than generally expected and much more than we should; The "normal" macro economic model is to transport long-distance corridor freight on rail,...
Article
Full-text available
In the first State of Logistics in 2004 the need for measurement and revitalisation of basic infrastructure in South Africa' dual economy was accentuated. The process of addressing these needs has started with the release of the National Freight Logistics Strategy, which delineates a comprehensive development framework, as well as Spoornet's growth...

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