Establishing a framework for the effective design of resilient supply chains with inherent non-linearities

Purpose of this paper: Previous control theory research on supply chain dynamics has predominantly taken a linear perspective of the real world, whereas nonlinearities have usually been studied via a simulation approach. Nonlinearities can naturally occur in supply chains through the existence of physical and economic constraints, for example, capacity limitations. Since the ability to flex capacity is an important aspect of supply chain resilience, there is a need to rigorously study such nonlinearities. Hence, the purpose of this paper is to propose a framework for the dynamic design of supply chains so that they are resilient to nonlinear system structures

Decision support for build-to-order supply chain management through multiobjective optimization

This paper aims to identify the gaps in decision-making support based on multiobjective optimization for build-to-order supply chain management (BTOSCM). To this end, it reviews the literature available on modelling build-to-order supply chains (BTO-SC) with the focus on adopting multiobjective optimization (MOO) techniques as a decision support tool. The literature has been classified based on the nature of the decisions in different part of the supply chain, and the key decision areas across a typical BTO-SC are discussed in detail. Available software packages suitable for supporting decision making in BTO supply chains are also identified and their related solutions are outlined. The gap between the modelling and optimization techniques developed in the literature and the decision support needed in practice are highlighted and future research directions to better exploit the decision support capabilities of MOO are proposed

Decision support for build-to-order supply chain management through multiobjective optimization

This is the post-print version of the final paper published in International Journal of Production Economics. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. Copyright @ 2010 Elsevier B.V.This paper aims to identify the gaps in decision-making support based on multiobjective optimization (MOO) for build-to-order supply chain management (BTO-SCM). To this end, it reviews the literature available on modelling build-to-order supply chains (BTO-SC) with the focus on adopting MOO techniques as a decision support tool. The literature has been classified based on the nature of the decisions in different part of the supply chain, and the key decision areas across a typical BTO-SC are discussed in detail. Available software packages suitable for supporting decision making in BTO supply chains are also identified and their related solutions are outlined. The gap between the modelling and optimization techniques developed in the literature and the decision support needed in practice are highlighted. Future research directions to better exploit the decision support capabilities of MOO are proposed. These include: reformulation of the extant optimization models with a MOO perspective, development of decision supports for interfaces not involving manufacturers, development of scenarios around service-based objectives, development of efficient solution tools, considering the interests of each supply chain party as a separate objective to account for fair treatment of their requirements, and applying the existing methodologies on real-life data sets.Brunel Research Initiative and Enterprise Fund (BRIEF

Impact of information exchange on supply chain strategies

Due to globalisation and the competition faced from Asian countries, there is an emergent need to investigate how to extend the limited capabilities of developing countries in order to survive in the market as well as reach global market. Developing countries play an important role as OEM units to provide global markets with under-brand names. Many difficulties face the industrial zones in these countries in their attempt to reach this target and these prevent them from providing their own brands. For example, many sectors in Egyptian industry are outperformed by Chinese competition and have even lost their domestic market share. Textiles are one of the most affected industries as a result of this competition. The risk of Egyptian fabrics vanishing from global markets is indicated by a huge reduction in export rate after the quota phase-out. Egyptian textile producers rely on global agreements to reach global markets. The period after the Multi-Fibre agreement shows an obvious drop in exportation rates till the Qualified Industrial Zones (QIZ) agreement was issued. Can the same scenario occur after QIZ quota phase-out? What should Egyptian fabric manufacturer do? Since the situation is alarming and may result in exporting the high quality Egyptian cotton to global markets instead of to its domestic manufacturers, the flood of Chinese fabrics in Egyptian Markets requires that the question “how to survive and compete with low-cost Chinese fabrics?” be investigated. The aim of the research was to investigate the deficiencies experienced by Egyptian firms trying to reach global markets and maintain their domestic market share. The research conducted an exploratory-explanatory empirical study to identify the major issues facing textile fabricators in Egyptian industrial zones. Case studies and a survey outcome were matched to provide validated empirical findings. An Interpretive Structuring Modelling approach was used to indicate the stages of supply chain deficiencies based on the case study findings. The major issues causing supply chain deficiencies are defined from the case study analysis and validated using the survey approach. The outcome of the empirical study indicates that supply chain design, integration and IT infrastructure are considered as major issues that lead to the existing deficiencies of the textile industry supply chain in Egypt despite the low level assigned to their importance. At the same time, production and procurement issues are considered as dependant on poor supply chain design, IT infrastructure and unreliable forecasting despite the high level assigned to their importance. A stage-based model for supply chain deficiencies in the Egyptian textile sector was highlighted in this study to indicate dependency and driving power among internal deficiencies. A framework, indicates supply chain deficiencies and their leading factors in Egypt, was concluded from this study. The study points out a number of external issues related to the surrounding environment and the government’s role in contributing to the aggravation of the existing deficiencies. The research uses simulation techniques to test the proposed solution that might provide better supply chain performance. A System Dynamic approach is used to model a case study of the investigated industry. Different scenarios of fulfilling local and international orders have been tested. These scenarios are represented in: expansion of production capacity, reduction of inventory levels or reduction of procurement time. Since addressing the internal deficiency, which empirical study respondents’ pointed out as being the most important one, could not provide an adaquate solution for the existing deficiencies, supply chain re-structuring to represent a collaborative pattern between partners was, therefore, tested and proved to have a great effect on supply chain performance. A collaborative pattern among supply chain partners indicated its positive impact on supply chain performance. The simulation experiments prove that the individual decisions of supply chain partners cannot bring about improvement to supply chain cost and responsiveness. The negative impact of an unreliable logistic system on supply chain performance was confirmed through the simulation experiments. The study provides the managerial levels in textile organisations with a solid causal basis for the supply chain deficiencies in the Egyptian textile sector. The outcome of the work can be employed by governmental authorities to address such difficulties and accelerate the growth of this sector globally. The thesis provides the fundamentals for investigating deficiencies in developing countries that might be extended by other researchers to investigate other defective sectors in Egypt and other developing countries

Structuring postponement strategies in the supply chain by analytical modeling

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Vendor Managed Inventory: why you need to talk to your supplier

Purpose The purpose of this paper is to investigate the concept of Vendor Managed Inventory (VMI) from an inter-organisational perspective. Extant literature on VMI tends to investigate the concept from a focal perspective, even though VMI has originally been born as a collaborative arrangement. Design/methodology/approach The paper is based on a literature review and an empirical study. It provides a comprehensive literature review on VMI and an illustrative case study of a supplier and a buyer jointly implementing VMI. Findings The findings of this paper are twofold. First, a literature review uncovers that contemporary research has delimited the analysis of VMI to a focal company perspective as current VMI cost models tend not to capture the picture of the complete supply chain. Second, it demonstrates through an illustrative case study that adoption of an inter-organisational approach to VMI is vital if companies are to optimize their buyer-supplier relationships. Research limitations/implications Future research should test the implications proposed in the empirical section, as this piece of research can be seen as exploratory case study research with the aim of analytical generalizations. Practical implications The inter-organisational VMI cost perspective in supply chains should be emphasized in purchasing departments since such a perspective significantly raises the awareness of the costs incurred in a supply chain. Originality/value Existing research has not explicitly focused on inter-organisational costs incurred by companies implementing VMI. This study seeks to bridge this research gapPeer Reviewe