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作者：KELLA, O
摘要：We consider a machine that works constantly and produces two types of fluid products, one type of product at a time. Whenever there is a positive amount of both types of products, the products are mixed immediately and shipped away. Whenever mixing is infeasible the product that is currently being produced accumulates inventory. The goal is to minimize the long-run average as well as the discounted costs of running such an operation. Inventory incurs a linear holding cost for each type of prod...
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作者：GREEN, L; KOLESAR, P; SVORONOS, A
摘要：We examine the effects of nonstationarity on the performance of multiserver queueing systems with exponential service times and sinusoidal Poisson input streams. Our primary objective is to determine when and how a stationary model may be used as an approximation for a nonstationary system. We focus on a particular question: How nonstationary can an arrival process be before a simple stationary approximation fails? Our analysis reveals that stationary models can seriously underestimate delays ...
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作者：JONEJA, D
摘要：In a multi-echelon assembly system, each production stage has inputs from a number of preceding stages, and supplies at most one succeeding stage. The product of the final stage is used to satisfy external demand in discrete time. There are fixed setup costs and linear inventory holding costs at each stage. The objective is to minimize the cost of operating the system over a finite time horizon. We consider the common case of nonstationary demands, and propose an extremely fast and simple sing...
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作者：MORRISON, DG; SCHMITTLEIN, DC
作者单位：University of Pennsylvania
摘要：How to combine expert opinions is an issue that has many aspects and even more answers. The problem addressed here is the incremental information an additional expert brings when he or she is correlated with the existing experts. R. T. Clemen and R. L. Winkler derive an algebraic formula that gives the surprising answer-usually very little. In this paper, we provide the geometrical intuition behind the Clemen and Winkler result. We also show how the Clemen and Winkler formula breaks down (i.e....
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作者：WHITE, JA
摘要：This paper, which is based on the Omega Rho lecture given at the 1990 ORSA/TIMS meeting in Philadelphia, states the author's necessary and sufficient conditions for effective OR/MS. Then it describes the changing character of this field, considers some opportunities for it, addresses some human resources concerns facing it, and offers a view of what it will do in the 21st century. After addressing some concerns about the higher education culture, it then provides some conclusions about the fut...
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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.
