Design of Closed Loop Supply Chains

Increased concern for the environment has lead to new techniques to design products and supply chains that are both economically and ecologically feasible. This paper deals with the product - and corresponding supply chain design for a refrigerator. Literature study shows that there are many models to support product design and logistics separately, but not in an integrated way. In our research we develop quantitative modelling to support an optimal design structure of a product, i.e. modularity, repairability, recyclability, as well as the optimal locations and goods flows allocation in the logistics system. Environmental impacts are measured by energy and waste. Economic costs are modelled as linear functions of volumes with a fixed set-up component for facilities. We apply this model using real life R&D data of a Japanese consumer electronics company. The model is run for different scenarios using different parameter settings such as centralised versus decentralised logistics, alternative product designs, varying return quality and quantity, and potential environmental legislation based on producer responsibility.supply chain management;reverse logistics;facility location;network design;product design

The Quality of Insurance Intermediary Services – Empirical Evidence for Germany

Insurance intermediaries help consumers to economize on information and transaction costs in insurance markets. However, competing insurance intermediaries provide heterogeneous services, which are difficult to assess by incompletely informed consumers. Transaction costs economics, search theory and principal agent theory provide arguments on product quality differences between the two main distribution channels in insurance markets (exclusive agents vs. independent intermediaries). The present paper uses a sample of 927 insurance intermediaries in Germany. By performing OLS estimations we test the impact of the different distribution channels, but also of other factors relating to the information processing activities on intermediaries’ service quality. Depending on the proxies used for service quality, we find mixed evidence for the “product quality” hypothesis according to which independent intermediaries provide better service quality than exclusive agents. We find that service quality depends also to a large extent on the information gathering and processing activities of the individual intermediaries.Insurance Distribution Channels, Service Quality

Contract Aware Components, 10 years after

The notion of contract aware components has been published roughly ten years ago and is now becoming mainstream in several fields where the usage of software components is seen as critical. The goal of this paper is to survey domains such as Embedded Systems or Service Oriented Architecture where the notion of contract aware components has been influential. For each of these domains we briefly describe what has been done with this idea and we discuss the remaining challenges.Comment: In Proceedings WCSI 2010, arXiv:1010.233

Identifying the Potential for Results-Based Financing for Sanitation

Results-based financing (RBF) covers a number of financial tools in which funding is contingent on achieving specified outcomes. RBF has been used across various sectors of international development to some success and this paper explores the potential for applying it to sanitation. In doing so, the author considers the presence of misaligned incentives in the sanitation sector, and then walks us through various points along the value chain at which RBF could be employed. Design and implementation of such strategies requires careful consideration of potential challenges, including how to avoid creating perverse incentives

Applying Revenue Management to the Reverse Supply Chain

We study the disposition decision for product returns in a closed-loop supply chain. Motivated by the asset recovery process at IBM, we consider two disposition alternatives. Returns may be either refurbished for reselling or dismantled for spare parts. Reselling a refurbished unit typically yields higher unit margins. However, demand is uncertain. A common policy in many firms is to rank disposition alternatives by unit margins. We show that a revenue management approach to the disposition decision which explicitly incorporates demand uncertainty can increase profits significantly. We discuss analogies between the disposition problem and the classical airline revenue management problem. We then develop single period and multi-period stochastic optimization models for the disposition problem. Analyzing these models, we show that the optimal allocation balances expected marginal profits across the disposition alternatives. A detailed numerical study reveals that a revenue management approach to the disposition problem significantly outperforms the current practice of focusing exclusively on high-margin options, and we identify conditions under which this improvement is the highest. We also show that the value recovered from the returned products critically depends on the coordination between forward and reverse supply chain decisions.remanufacturing;revenue management;onderdelen;revenues;spare parts inventory

Integration of decision support systems to improve decision support performance

Decision support system (DSS) is a well-established research and development area. Traditional isolated, stand-alone DSS has been recently facing new challenges. In order to improve the performance of DSS to meet the challenges, research has been actively carried out to develop integrated decision support systems (IDSS). This paper reviews the current research efforts with regard to the development of IDSS. The focus of the paper is on the integration aspect for IDSS through multiple perspectives, and the technologies that support this integration. More than 100 papers and software systems are discussed. Current research efforts and the development status of IDSS are explained, compared and classified. In addition, future trends and challenges in integration are outlined. The paper concludes that by addressing integration, better support will be provided to decision makers, with the expectation of both better decisions and improved decision making processes

Towards A regional resources strategy consultation

Report produced for emda to inform the agency's input into regional Waste and Resources Strategies. Reviews policy context, available data and views from key stakeholders