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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01 Mar 2013
TL;DR: An algorithm which considered Preemptable task execution and multiple SLA parameters such as memory, network bandwidth, and required CPU time is proposed and obtained experimental results show that in a situation where resource contention is fierce the algorithm provides better utilization of resources.
Abstract: Today Cloud computing is on demand as it offers dynamic flexible resource allocation, for reliable and guaranteed services in pay-as-you-use manner, to Cloud service users. So there must be a provision that all resources are made available to requesting users in efficient manner to satisfy their needs. This resource provision is done by considering the Service Level Agreements (SLA) and with the help of parallel processing. Recent work considers various strategies with single SLA parameter. Hence by considering multiple SLA parameter and resource allocation by preemption mechanism for high priority task execution can improve the resource utilization in Cloud. In this paper we propose an algorithm which considered Preemptable task execution and multiple SLA parameters such as memory, network bandwidth, and required CPU time. An obtained experimental results show that in a situation where resource contention is fierce our algorithm provides better utilization of resources.
41 citations
TL;DR: This work considers a continuous-review inventory model with a fill rate service constraint with a distribution free approach, and is able to derive closed-form expressions for the optimal order quantity and reorder point.
41 citations
TL;DR: This paper investigates a supply chain system with a sole manufacturer who may face a production disruption, and two independent retailers who compete each other with price and service level, formulated as a manufacturer-Stackelberg game and characterize the equilibrium behaviour of the system.
Abstract: Business competition among the individual retailers in a supply chain is a common event, and it plays an important role in making supply chain decisions.
In a newsvendor setting, this paper investigates a supply chain system with a sole manufacturer who may face a production disruption, and two independent retailers who compete each other with price and service level. The demand at each retailer is random but influenced by the prices and service levels of both the retailers. We formulate the decentralized system as a manufacturer-Stackelberg game and characterize the equilibrium behaviour of the system. We further show that a wholesale price discount scheme can coordinate the supply chain and achieve win–win outcome. A numerical example is given to illustrate the theoretical results and study the impact of production yield due to production disruption on the performance of the supply chain.
41 citations
09 Dec 2007
TL;DR: A discrete event simulation model of the logistic operations at a real high throughput warehouse which handles more than 12 millions of cases annually is developed to evaluate whether specific strategies to share the storage space could lead to reduce the operation costs while keeping the service level as high as possible.
Abstract: Warehouse or distribution centre managers have to decide how to collect the products to fulfill customers requests but also where to locate the products (SKUs) and how much space to allocate to each of them. Moreover, they have to deploy replenishment strategies to guarantee the reliability of their own stocks. These are challenging decisions because of their level of complexity and their high impact on the centre performance in terms of both its throughput and the operation costs. In particular, the goal of this work is to evaluate whether specific strategies to share the storage space could lead to reduce the operation costs while keeping the service level as high as possible. To this end, this paper develops a discrete event simulation model of the logistic operations at a real high throughput warehouse which handles more than 12 millions of cases annually. Preliminary results show that potential economies may be achieved by reducing the number of stock-outs at the picking area where customer orders are collected.
41 citations
TL;DR: In this article, a one-product production/inventory model is presented, where the production rate can be dynamically adjusted in order to cope with random fluctuations in demand and the inventory level is controlled by using one of two possible production rates where under each production rate the production is continually added to the inventory.
Abstract: This paper deals with a one-product production/inventory model, where the production rate can be dynamically adjusted in order to cope with random fluctuations in demand. The inventory level is controlled by using one of two possible production rates where under each production rate the production is continually added to the inventory. The demand process for the product is described by a compound Poisson process. Also, excess demand is lost. In accordance with common practice we consider service measures as the average number of lost-sales occurrences per unit time and the fraction of demand that is lost. For a two-critical-number control rule we derive practically useful approximations for the switch-over level in order to achieve a prespecified service level. Numerical experiments reveal that the approximations are quite accurate.
41 citations