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作者:Tagaras, G; Nikolaidis, Y
作者单位:Aristotle University of Thessaloniki
摘要:In an attempt to improve the procedures for statistical process control many researchers have developed and proposed a variety of adaptive control charts in the last decade The common characteristic of those charts is that one or more of the chart parameters (sampling interval sample size control limits) is allowed to change during operation taking into account current sample information Due to their flexibility adaptive charts are more effective than their static counterparts but they are als...
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作者:Song, JS; Yao, DD
作者单位:University of California System; University of California Irvine; Columbia University
摘要:We study a single product assembly system in which the final product is assembled to order whereas the components (subassemblies) are built to stock Customer demand follows a Poisson process and replenishment lead times for each component are independent and identically distributed random variables For any given base-stock policy the exact performance analysis reduces to the evaluation of a set of M/G/infinity queues with a common arrival stream We show that unlike the standard M/G/infinity qu...
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作者:Berkelaar, A; Dert, C; Oldenkamp, B; Zhang, S
作者单位:Erasmus University Rotterdam; Erasmus University Rotterdam - Excl Erasmus MC; Vrije Universiteit Amsterdam; Vrije Universiteit Amsterdam; Chinese University of Hong Kong
摘要:Decision making under uncertainty is a challenge faced by many decision makers Stochastic programming is a major tool developed to deal with optimization with uncertainties which has found applications in e g finance such as asset-liability and bond-portfolio management Computationally however many models in stochastic programming remain unsolvable because of overwhelming dimensionality For a model to be well solvable its special structure must be explored Most of the solution methods are base...
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作者:Powell, WB; Marar, A; Gelfand, J; Bowers, S
作者单位:Princeton University; Princeton University
摘要:Online models for real-time operations planning face a host of implementation issues that do not a-rise in more strategic arenas. We use the seemingly simple problem of assigning drivers to loads in the truckload motor carrier industry as an instance to study the issues that arise in the process of implementing a real-time dispatch system. Although the project was moderately successful, our focus is not on documenting the benefits, but rather on summarizing the challenges that arose, The most ...
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作者:Baker, SF; Morton, DP; Rosenthal, RE; Williams, LM
作者单位:United States Department of Defense; United States Air Force; United States Air Force Academy; University of Texas System; University of Texas Austin; United States Department of Defense; United States Navy; Naval Postgraduate School; United States Department of Defense; United States Navy; Naval Postgraduate School
摘要:We describe a large-scale linear programming model for optimizing strategic (intercontinental) airlift capability. The model routes cargo and passengers through a specified transportation network with a given fleet of aircraft subject to many physical and policy Constraints. The time-dynamic model captures a significant number of the important aspects of an airlift system in a large-scale military deployment, including aerial refueling, tactical (intracontinental) aircraft shuttles, and constr...
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作者:Thomas, P; Teneketzis, D; Mackie-Mason, JK
作者单位:University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan
摘要:We present an approach to the admission control and resource allocation problem in connection-oriented networks that offer multiple services to users. Users' preferences are summarized by means of their utility functions, and each user is allowed to request more than one type of service. Multiple types of resources are allocated at each link along the path of a connection. We assume that the relation between Quality of Service (QoS) and resource allocation is given, and we incorporate it as a ...
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作者:Balakrishnan, A; Magnanti, TL; Sokol, JS; Wang, Y
作者单位:University of Texas System; University of Texas Austin; Massachusetts Institute of Technology (MIT); University System of Georgia; Georgia Institute of Technology
摘要:The network, restoration problem is a specialized capacitated network design problem requiring the installation of spare capacity to fully restore disrupted network flows if any edge in a telecommunications network fails. We present a new mixed-integer programming formulation for a line restoration version of the problem using a single type of capacitated facility. We examine two different models, for distinct and integrated spare-capacity systems, reflecting technologies used in synchronous t...
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作者:Mulligan, AE; Ahlfeld, DP
作者单位:Woods Hole Oceanographic Institution; University of Massachusetts System; University of Massachusetts Amherst
摘要:A new interior-point algorithm for solving the groundwater-pollution-control design problem is presented. The algorithm requires that the objective function is differentiable in the interior region. Fur minimization problems with nonlinear constraint, and a concave objective function, the technique is shown to be similar to an active set gradient-projection method, where the tangent of the boundary between feasible and infeasible solutions is used to determine a search direction. In this new m...
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作者:Post, T; Cherchye, L; Kuosmanen, T
作者单位:Erasmus University Rotterdam; Erasmus University Rotterdam - Excl Erasmus MC; KU Leuven
摘要:This paper develops a new nonparametric model for efficiency estimation. In contrast to Data Envelopment Analysis (DEA), it does not impose debatable production assumptions like free disposability and convexity, and it does not assume that the data are measured without error. The estimators are asymptotically unbiased and have an asymptotic variance that is comparable to that of stochastic frontier estimators (provided the latter use a correct specification of the functional form for the produ...
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作者:Sherali, HD; Driscoll, PJ
作者单位:Virginia Polytechnic Institute & State University; United States Department of Defense; United States Army; United States Military Academy
摘要:This paper is concerned with applying the Reformulation-Linearization Technique (RLT) to derive tighter relaxations for the Asymmetric Traveling Salesman Problem (ATSP) formulation that is based on the Miller-Tucker-Zemlin (MTZ) subtour elimination constraints. The MTZ constraints yield a compact representation for the Traveling Salesman Problem (TSP), and their use is particularly attractive in various routing and scheduling contexts that have an embedded ATSP structure. However, it is well r...