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作者：COHEN, MA; AGRAWAL, N; AGRAWAL, V; RAMAN, A
作者单位：New York University; Harvard University
摘要：The costs, benefits and strategic role of intermediate echelons in distribution networks are not well understood in many industries. This paper describes a study of such multilevel systems in the industrial paper and plastics industry. We quantify the impact of redistributors, who buy products from manufacturers and sell them exclusively to other distributors. The methodology was applied to an industry-wide study. We derived statistics based on optimal distributor policies for channel choice a...
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作者：WINKLER, RL; WALLSTEN, TS; WHITFIELD, RG; RICHMOND, HM; HAYES, SR; ROSENBAUM, AS
作者单位：Duke University; University of North Carolina; University of North Carolina Chapel Hill; United States Department of Energy (DOE); Argonne National Laboratory; United States Environmental Protection Agency
摘要：This paper presents an application of a formal process for encoding experts' probabilistic judgments. The objective is to characterize scientific judgment regarding the risk of chronic lung injury to children aged 8 through 16 and to adult outdoor workers due to long-term ozone exposure in areas with patterns of exposure similar to those found in Southern California and the Northeast. Our measure of injury is the incidence of mild or moderate lesions in the centriacinar region of the lung. pro...
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作者：GAVISH, B
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作者：PALLANT, DL; TAYLOR, PG
作者单位：University of Adelaide; University of Adelaide
摘要：A model for a cellular mobile network is given which uses the dynamic channel allocation strategy proposed by Everitt and Macfadyen (1983). In this model, handovers of calls from one cell to another are explicitly included. The equilibrium distribution of this network is shown to have product form under certain reversibility conditions. The conditions are restrictive and are, perhaps, unlikely to hold in practical models. However, their study does provide insight into the behavior of cellular ...
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作者：CHANG, SG; GAVISH, B
作者单位：Vanderbilt University
摘要：This paper suggests an improved formulation for the multiperiod network topology and capacity expansion problem and proposes new lower bounding schemes based on it. It differs from earlier formulations and solution methods in that entirely new and different subproblems are solved and a number of lower bound tightening schemes are added within the framework of a Lagrangian relaxation. Dual ascent and multiplier adjustment procedures are suggested for the Lagrange multiplier updating procedure. ...
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作者：BALAKRISHNAN, A; MAGNANTI, TL; WONG, RT
作者单位：Massachusetts Institute of Technology (MIT); Nokia Corporation; Nokia Bell Labs; AT&T
摘要：Growing demand, increasing diversity of services, and advances in transmission and switching technologies are prompting telecommunication companies to rapidly expand and modernize their networks. This paper develops and tests a decomposition methodology to generate cost-effective expansion plans, with performance guarantees, for one major component of the network hierarchy-the local access network. The model captures economies of scale in facility costs and tradeoffs between installing concent...
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作者：KARANDIKAR, RL; KULKARNI, VG
作者单位：University of North Carolina; University of North Carolina Chapel Hill
摘要：This paper considers a stochastic fluid model of a buffer content process {X(t), t greater than or equal to 0} that depends on a finite-state, continuous-time Markov process {Z(t), t greater than or equal to 0} as follows: During the time-intervals when Z(t) is in state i, X(t) is a Brownian motion with drift mu(i), variance parameter sigma(i)(2) and a reflecting boundary at zero. This paper studies the steady-state analysis of the bivariate process {(X(t), Z(t)), t greater than or equal to 0}...
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作者：TSENG, KH; HSIAO, MTT
摘要：The optimal control of arrivals to a two-station token ring network is analyzed in this paper. By adopting a maximum system throughput under a system time-delay constraint optimality criterion, we study a network optimality problem with the assumption that both stations have global information (i.e., the number of packers at each station). The controlled arrivals are assumed to be state-dependent Poisson streams and have exponentially distributed service time. The optimality problem will be fo...
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作者：LEE, MJ; YEE, JR
作者单位：University of Hawaii System
摘要：A reconfigurable network is a circuit-switched network where the effective topology and capacities can be dynamically adapted to changes in the traffic requirements or to changes in the structure of the network due to failures. The application of reconfigurable networks considered in this paper is data communications. We formulated the joint topology, capacity and routing problem in a reconfigurable network as a nonlinear, mixed integer programming problem. To solve this problem, we present a ...
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作者：CHANG, CS
作者单位：International Business Machines (IBM); IBM USA
摘要：Unlike the leaky-bucket scheme which regulates the input rare, the filters we study in this paper reduce the variability of interarrival times (subject to a maximum delay constraint for each customer). These filters are called smoothing filters for point processes. By considering the output processes of various queueing systems, we show that an infinite-server queue acts as a smoothing filter for a doubly stochastic Poisson process, and a single-server queue with deterministic service times ac...
