IIE Transactions
1573-9724
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Optimal asymmetric tolerance design
Tập 32 - Trang 1127-1137 - 2000
An asymmetric tolerance design occurs when deviation (from the ideal target) of a quality characteristic in one direction is more harmful than in the opposite direction. Asymmetric tolerances are common in many manufacturing processes. Traditionally, the designer of a manufactured component either would choose the smaller tolerance as the tolerance for both sides of the ideal target, or would set ......
Negotiating price/delivery date in a stochastic manufacturing environment
Tập 31 - Trang 255-270 - 1999
We study a make-to-order manufacturing system consisting of several processing centers that are subject to failures and repairs. Our objective is to build a model that can be used as a tool for negotiating the delivery date and the price of a certain upcoming order. The model takes into account the congestion level of the shop floor at the time the order is placed. Based on the workload of the pro......
A methodology for quantifying the effects of product development on cost and time
Tập 31 - Trang 365-378 - 1999
This paper demonstrates a methodology to quantify past product development efforts in an attempt to better utilize past experiences. The methodology is centered around conducting an observational study, using regression analysis, to expose relationships between various aspects of past product development efforts, including cost and time. The applicability of the methodology is demonstrated by pres......
Dynamic lot sizing with returning items and disposals
Tập 34 - Trang 437-448 - 2002
We analyze a version of the Dynamic Lot Size (DLS) model where demands can be positive and negative and disposals of excess inventory are allowed. Such problems arise naturally in several applications areas, including retailing where previously sold items are returned to the point of sale and re-enter the inventory stream (such returns can be viewed as negative demands), and in managing kits of sp......
The power of coordinated decisions for short-life-cycle products in a manufacturing and distribution supply chain
- 1999
This paper explores ways of conceptualizing and studying the power of coordination and strategic alliances within a manufacturing and distribution supply chain consisting of one manufacturer and one distributor. The supply chain operates to meet price-sensitive random demand of a product with a short product life cycle. We derive closed-form multi-attribute measures of performance for the supply c......
Lot sizing problems with strong set-up interactions
- 1997
We address the problem of coordinated replenishment of products when the products can be produced only in fixed proportion to each other. Such problems commonly arise in the manufacture of sheet/plate metal parts or die-cast parts. The problem is a variant of the well-known Joint Replenishment Problem. We call this problem the Strong Interaction Problem (SIP). After giving a mathematical formulati......
Change-point detection of mean vector or covariance matrix shifts using multivariate individual observations
Tập 32 - Trang 537-549 - 2000
A preliminary control chart is given for detecting a shift in the mean vector, the covariance matrix, or both, when multivariate individual observations are available. The data are partitioned after each observation in turn, and the likelihood ratio statistic for a shift is calculated. The control chart is obtained by plotting these statistics after dividing by the expected value under the conditi......