Topic
Service level
About: Service level is a research topic. Over the lifetime, 7647 publications have been published within this topic receiving 126093 citations. The topic is also known as: service level.
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TL;DR: The employment of operating curves representing the relationship between mean inventory level and mean delivery delay or service level are described, which makes it possible not only to determine planning parameters and performance indicators for the materials management process but also to evaluate their interdependencies and effects on the logistical performance.
47 citations
Proceedings Article•
01 Jan 2008TL;DR: This paper proposes and discusses extensions to the WS-Agreement protocol addressing issues of dynamic negotiation and creation of service level agreements (SLAs) for grid level scheduling.
Abstract: A typical task of a grid level scheduling service is the orche stration and coordination of resources in the grid. Especially the co-allocation of resources makes high demands on this service. Co-allocation requires the grid level scheduler to coordinate resource management systems located in different domains. Provided that the site autonomy has to be respected negotiation is the only way to achieve the intended coordination. Today, it is common practice to do this by using web service technologies. Furthermore, service level agreements (SLAs) emerged as a new way to manage usage of resources in the grid and are already adopted by a number of management systems. Therefore, it is natural to look for ways to adopt SLAs for grid level scheduling. In order to do this, efficient and flexible protocols are needed, which support dynamic negotiation and creation of SLAs. In this paper we propose and discuss extensions to the WS-Agreement protocol addressing these issues.
46 citations
TL;DR: In this article, an approach for evaluating the interactions between demand forecasting methods and stock control systems, in terms of their effects on global system performances, based on a comparative simulation test of global system costs using historical data, is presented.
46 citations
TL;DR: Using a nonlinear mixed-integer programming model, the authors developed a distribution network with a dual emphasis on minimizing the total distribution costs and improving the customer service levels as discussed by the authors, where the optimal number of regional distribution centers the firm should operate with, identifying where in the United States the firms should locate these distribution centers, and allocation each retailer/customer distribution center to an appropriate regional distribution center, and determining the total transportation costs and service level for each case.
Abstract: This article reports on a marketing initiative at a pharmaceutical company to redesign its distribution network. Distribution affects a firm's cost and customer satisfaction and drives profitability. Using a nonlinear mixed-integer programming model, the authors develop a distribution network with a dual emphasis on minimizing the total distribution costs and improving the customer service levels. Specifically, they address the following issues: They (1) determine the optimal number of regional distribution centers the firm should operate with, (2) identify where in the United States the firm should locate these distribution centers, (3) allocate each retailer/customer distribution center to an appropriate regional distribution center, and (4) determine the total transportation costs and service level for each case. Finally, they conduct a sensitivity analysis to determine the impact of changes in problem parameters on the optimality of the proposed model. This marketing initiative at the studied...
46 citations
Posted Content•
TL;DR: The supply chain coordination issue is discussed and it is found that a buyback contract can also coordinate the supply chain in the presence of the service constraint and the optimal first-stage order quantity may not be monotone with respect to information accuracy.
Abstract: We study a single-period two-stage service-constrained supply chain with an information update. The buyer has two procurement opportunities with the second one after observing a market signal, which updates the demand forecast. He also commits to a service level after observing the market signal. We derive his optimal ordering decisions and show that the critical market signal, the optimal first-stage order quantity, and the optimal expected profit are monotone with respect to the target service level. We also discuss the impact of the forecast quality on the optimal decisions. We show that the optimal first-stage order quantity may not be monotone with respect to information accuracy, as is in the case without the service constraint. In addition, we extend our analysis to the situation when an order cancellation is allowed upon the observation of the market signal. We also compare the results obtained for the problems with and without an order cancellation. Finally, we discuss the supply chain coordination issue and find that a buyback contract can also coordinate the supply chain in the presence of the service constraint.
46 citations