-
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...
-
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...
-
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...
-
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...
-
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 ...
-
作者：MOINZADEH, K; SCHMIDT, CP
作者单位：University of Alabama System; University of Alabama Birmingham
摘要：In this paper, we develop an approximate model of an inventory control system in which there exist two options for resupply, with one having a shorter lead-time. We assume that demand and the fixed ordering costs are small relative to the holding cost so that a one-for-one ordering policy is appropriate. We consider a policy for placing emergency orders that uses information about the age of outstanding orders. We derive the steady-state behavior of this policy and present some computational r...
-
作者：WEIN, LM
摘要：Motivated by scheduling problems that arise in flexible manufacturing systems, we develop a heuristic procedure to obtain effective flow control (sequencing, routing, and input control) policies for multiclass queueing networks. The procedure employs a Brownian model of J. M. Harrison that approximates a multiclass queueing network with dynamic scheduling capability, if the total load imposed on each station in the queueing network is approximately equal to that station's capacity. In this pap...
-
作者：AVENHAUS, R; BATTENBERG, HP; FALKOWSKI, BJ
摘要：The problem of data verification may be described as two sides that have concluded a contract stipulating that one side (the inspectee) is to report a set of data to the other (the inspector). The inspector has to decide on the basis of his own measurements whether to accept the data reported by the inspectee as correct or to assume they have been falsified. This situation is modeled as a statistical game, and practical solutions are supplied. We consider the verification of n data with a samp...
-
作者：CYERT, RM
摘要：The theme of the October 29-31, 1990, ORSA/TIMS meeting in Philadelphia was Productivity and Global Competition. This paper, which is an address given there, pursues this theme by emphasizing the importance of knowledge in contrast to natural resources as the critical ingredient in economic development in the future, and stresses the rapidity with which knowledge is transferred across national boundaries and the impossibility of restraining it. It forecasts that the competition among nations w...
-
作者：NAGURNEY, A
摘要：This memorial tribute to the late Stella Dafermos summarizes her contributions to equilibrium modeling, analysis, and computation, and provides a list of her published papers.
