We consider the problem of allocating production capacity among multiple items, assuming that a fixed proportion of overall capacity can be dedicated exclusively to the production of each item. Given a capacity allocation, production of each item follows a base-stock policy, i.e., each demand triggers a replenishment order to restore safety stocks to target levels. We present procedures for cho...

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With the extensive discussion of Supply Chain Management concepts in the recent past, issues concerning efficient inventory policies gain in importance. Several analytical models as well as simulation studies revealed inventory reductions for the entire supply chain by applying information sharing strategies. However, discrepancies in the published results concerning the effects on individual s...

MICHAEL A. DELICHATSIOS,1 ROBERT A. ALTENKIRCH,2 MATTHEW F. BUNDY,3 SUBRATA BHATTACHARJEE,4 LIN TANG2 and KURT SACKSTEDER5 Fire Science and Technology Laboratory CSIRO/DBCE Fire Safety Engineering Division North Ryde, NSW Australia 1670 NSF Engineering Research Center Department of Mechanical Engineering Mississippi State University Mississippi State, MS 39762, USA National Institute of Standar...

In this paper, we consider a dual-channel vendor-buyer system consisting of a buyer and two vendor-owned facilities: a central distribution center (DC) and a regional DC. Orders for a single item are delivered through two distinct channels: an indirect channel, comprising the central DC, the regional DC and the buyer; and a direct channel, comprising the central DC and the buyer, bypassing the ...

By adding a set of redundant constraints, and by iteratively refining the approximation, we show that a commercial solver is able to routinely solve moderate-size strategic safety stock placement problems to optimality. The speed-up arises because the solver automatically generates strong flow cover cuts using the redundant constraints. © 2005 Elsevier B.V. All rights reserved.

We examine a variant of the uncapacitated lot-sizing model of WagnerWhitin involving sales instead of fixed demands, and lower bounds on stocks. Two extended formulations are presented, as well as a dynamic programming algorithm and a complete description of the convex hull of solutions. When the lower bounds on stocks are non-decreasing over time, it is possible to describe an extended formula...

Monthly price and stock data are used to test the influence of Philippine government buffer-stock programs on seasonal and annual variability of producer and consumer rice prices. The period examined is 1974-1990. NFA stock changes are shown to have had some stabilizing influence on seasonal and annual price changes, but the magnitude is small and not statistically significant.

If a government imposes a tax on capital income, it may, as a result, lower the private rate of return on capital below the growth rate of an economy, thereby giving rise to the possibility of running a permanent deficit. Since, however, the before-tax rate of return and not the after-tax rate of return is relevant for judging the dynamical efficiency of the economy, the possibility of a perman...

In this paper, we examine a discrete-time, periodic-review production environment that assembles several hundred items and that possesses limited, perhaps random production capacity. The demand for a large subset of these items is highly erratic and extremely difficult, if not impossible, to predict accurately. Consequently, a coordinated production-inventory strategy, such as the No B/C Strate...