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作者:ZHAO, QZ; WANG, CY; ZHANG, ZM; ZHANG, YX; WANG, CJ
摘要:This paper describes a project to develop on optimal production plan for crops and livestock in Chang Qing County, People's Republic of China. The production plan was to increase net profit without adverse effects on the environment. We set up four large-scale linear programming models, each having more than 3,000 variables and 100 constraints, for different weather conditions and combinations of crops and livestock production. We obtained optimal solutions using computers. We used game theory...
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作者:CORNER, JL; KIRKWOOD, CW
摘要:In order to provide a guide to source material for practitioners interested in applying decision analysis methods, this paper surveys applications of decision analysis published from 1970 through 1989. In addition, it presents references for useful decision analysis methods that are often omitted from introductory textbooks. As used in this article, the term decision analysis refers to a set of quantitative methods for analyzing decisions which use expected utility as the criterion for identif...
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作者:BANNISTER, CH; KAYE, RJ
作者单位:University of New South Wales Sydney
摘要:A new method for optimizing the operation of a single storage connected to a general linear memoryless system is presented. The model is shown to cover a wide variety of practical situations where a deterministic approximation is valid. The method combines linear and dynamic programming concepts to produce a fast but exact optimization.
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作者:ANILY, S
摘要:Automated warehouses are often faced with the problem of smoothing their stock volume over time in order to minimize the cost due to space acquisition. In this paper, we consider an infinite-horizon, multi-item replenishment problem: In addition to the usual setup and holding costs incurred by each item, an extra charge proportional to the peak stock volume at the warehouse is due. This last cost raises the need for careful coordination while making decisions on the individual item order polic...
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作者:ABOUDI, R; NEMHAUSER, GL
作者单位:University System of Georgia; Georgia Institute of Technology
摘要:This paper presents a class of facet-defining inequalities for an assignment problem with the additional constraints that specified variables are required to be equal to each other. In a special case, the complete polyhedral description is given.
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作者:FLEMING, PJ; SIMON, B
作者单位:University of Colorado System; University of Colorado Denver
摘要:We present a method for approximating sojourn time distributions in open queueing systems based on light and heavy traffic limits. The method is consistent with and generalizes the interpolation approximations for moments previously presented by M. I. Reiman and B. Simon. The method is applicable to the class of systems for which both light and heavy traffic limits can be computed, which currently includes Markovian networks of priority queues with a unique bottleneck node. We illustrate the m...
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作者:OZEKICI, S; PLISKA, SR
作者单位:University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital
摘要:A system subject to catastrophic failure deteriorates according to a delayed Markov process and is subjected to a series of binary tests that may yield false negative and false positive outcomes. A corrective action is carried out when a true positive is observed, thereby reducing the chance of system failure. Costs of inspections, false positives, the corrective action, and failure are incurred, and dynamic programming is used to compute the optimal inspection schedule. Two tractable computat...
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作者:TAMAKI, M
作者单位:University of California System; University of California Berkeley
摘要:A finite number of candidates appear one-by-one in random order with all permutations equally likely. We are able, at any time, to rank the candidates that have so far appeared according to some order of preference. Each candidate may be classified into one of two types independent of the other candidates: available or unavailable. An unavailable candidate does not accept an offer of employment. The goal is to find a strategy that maximizes the probability of employing the best among the avail...
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作者:KLEIN, RS; LUSS, H
摘要:We examine an allocation problem in which limited resources are allocated among competing activities. Certain substitutions among resources are possible. The substitutional relations are formulated using tree structures, where a node (resource) can substitute for all its descendants. Potential applications with such resources are found, for example, in the manufacturing of high technology products. The objective is to minimize the maximum weighted relative deviation of the activity levels from...
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作者:HUM, SH; SARIN, RK
作者单位:University of California System; University of California Los Angeles
摘要:Planning and scheduling of bottleneck operations is a fundamental problem in production management because bottleneck facilities control the output and profitability of the entire system. We develop optimal solutions for the product-mix planning, lot sizing, and scheduling of such bottleneck facilities. The integrated product-mix planning, lot sizing and scheduling problem yields a nonconvex, mixed-integer nonlinear program which is difficult to solve for global optimality. Our strategy is to ...