-
作者：Dey, D; Sarkar, S; De, P
作者单位：University of Washington; University of Washington Seattle; University of Texas System; University of Texas Dallas; University System of Ohio; University of Dayton
摘要：In recent years, there has been a proliferation of database systems in all types of organizations. In many cases, these databases are developed in different departments and maintained autonomously. Much is to be gained, however, if databases across departments, divisions, or even organizations can be related to one another. One main problem of relating data stored in different databases is the differences in their representation of real-world entities, such as the use of different identifiers ...
-
作者：Nutt, PC
作者单位：University System of Ohio; Ohio State University
摘要：The evaluation of alternatives during organizational decision making was investigated to uncover evaluation tactics used by decision makers and how these tactics and complexity influenced success. Evaluation tactics that relied upon subjective, judgmental, bargaining, and analytical inferences were uncovered from 317 strategic decisions. The complexity of these decisions was measured by the numbers of alternatives considered, number of criteria used, and perceived difficulty of the evaluation ...
-
作者：Clark, BH; Montgomery, DB
作者单位：Northeastern University; Stanford University
摘要：This study examines an aspect of competitive interactions that has attracted increasing research attention: the relationship between deterrence and competitive reputations. We build a conceptual model of the antecedents and consequences of a firm's reputation for being a credible defender of its markets. Theory and limited empirical evidence suggests a firm with this reputation should deter competitive attacks against it. We explore how a manager's competitive cognition about her opponents' (1...
-
作者：Cooper, RB; Niu, SC; Srinivasan, MM
作者单位：State University System of Florida; Florida Atlantic University; University of Texas System; University of Texas Dallas; University of Tennessee System; University of Tennessee Knoxville
摘要：Sarkar and Zangwill (1991) showed by numerical examples that reduction in setup times can, surprisingly, actually increase work in process in some cyclic production systems (that is, reduction in switchover times can increase waiting times in some polling models). We present, for polling models with exhaustive and gated service disciplines, some explicit formulas that provide additional insight and characterization of this anomaly. More specifically, we show that, for both of these models, the...
-
作者：Laguna, M
作者单位：University of Colorado System; University of Colorado Boulder
摘要：The problem of expanding the capacity of a single facility in telecommunications network planning is addressed. This problem can be formulated as a time-dependent knapsack, when relevant information is assumed to be known. We introduce the use of scenarios to model uncertainty in key data. The problem is formulated within the robust optimization framework and solved exactly in two phases. The first phase consists of a dynamic programming recursion and the second one of a shortest path procedur...
-
作者：Fox, CR; Tversky, A
作者单位：Duke University; Stanford University
摘要：We develop a belief-based account of decision under uncertainty. This model predicts decisions under uncertainty from (i)judgments of probability, which are assumed to satisfy support theory; and (ii) decisions under risk, which are assumed to satisfy prospect theory. In two experiments, subjects evaluated uncertain prospects and assessed the probability of the respective events. Study I involved the 1995 professional basketball playoffs; Study 2 involved the movement of economic indicators in...
-
作者：Mandelbaum, A; Reiman, MI
作者单位：Technion Israel Institute of Technology; AT&T; Alcatel-Lucent; Lucent Technologies; Nokia Corporation; Nokia Bell Labs
摘要：We view each station in a Jackson network as a queue of tasks, of a particular type, which are to be processed by the associated specialized server. A complete pooling of queues, into a single queue, and servers, into a single server, gives rise to an M/PH/1 queue, where the server is flexible in the sense that it processes all tasks. We assess the value of complete pooling by comparing the steady-state mean sojourn times of these two systems. The main insight from our analysis is that care mu...
-
作者：Simar, L; Wilson, PW
作者单位：Universite Catholique Louvain; University of Texas System; University of Texas Austin
摘要：Efficiency scores of production units are generally measured relative to an estimated production frontier. Nonparametric estimators (DEA, FDH,...) are based on a finite sample of observed production units. The bootstrap is one easy way to analyze the sensitivity of efficiency scores relative to the sampling variations of the estimated frontier. The main point in order to validate the bootstrap is to define a reasonable data-generating process in this complex framework and to propose a reasonab...
-
作者：Banker, RD; Khosla, I; Sinha, KK
作者单位：University of Texas System; University of Texas Dallas; University of Minnesota System; University of Minnesota Twin Cities
摘要：In recent years, the practitioner literature in operations management has seen a dramatic surge in articles on quality management. It reflects the increased emphasis on quality by U.S. firms, which has been attributed largely to increased competition faced by them. The question of how quality is influenced by competitive intensity, however, has not received much attention, either in the practitioner or the academic research literatures. The notion of competitive intensity itself has not been d...
-
作者：Sikora, R; Shaw, MJ
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign
摘要：This paper describes a framework for the coordination and integration of information systems. By modeling typical enterprise information systems as consisting of multiple agents with different functionalities, the methodology provides the representational formalism, coordination mechanisms, and control schemes necessary for integrating heterogeneous units of an information system while meeting such performance criteria as overall effectiveness, efficiency, responsiveness, and robustness. The f...
