منابع مشابه
The Equipment-Replacement Problem
To illustrate these assumptions, let us consider a simple numerical example. Suppose a car is needed for three years; that is, suppose N = 3. At the beginning of the first year, we have a 2-year-old car. The annual cost of operating a car is a function of its age; and this cost function is given by: c(0) = 10, c(1) = 20, c(2) = 40, c(3) = 60, and c(4) = 70. The fact that these costs are increas...
متن کاملEquipment replacement: an integration view
Equipment replacement: an integration view " (1989). Retrospective Theses and Dissertations. Paper 9221. The most advanced technology has been used to photo graph and reproduce this manuscript from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer...
متن کاملA medical equipment replacement model.
A simple mathematical model has been developed to identify and prioritize medical equipment in need of replacement. The model contains a total of ten attributes addressing four primary replacement issues: equipment service and support; equipment function; cost benefits; and clinical efficacy. Sensitivity to incomplete or subjective data is significantly reduced through the use of a "yes-no" (0,...
متن کاملDiscrete-continuous analysis of optimal equipment replacement
In Operations Research, the equipment replacement process is usually modeled in discrete time. The optimal replacement strategies are found from discrete (or integer) programming problems, well known for their analytic and computational complexity. An alternative approach is represented by continuous-time vintage capital models that explicitly involve the equipment lifetime and are described by...
متن کاملA Stochastic Dynamic Programming Approach for the Equipment Replacement Optimization under Uncertainty
In this paper, a stochastic dynamic programming (SDP) based optimization model is formulated for the equipment replacement optimization (ERO) problem that can explicitly account for the uncertainty in vehicle utilization. The Bellman approach is developed and implemented to solving the ERO SDP problem. Particular attention is paid to the SDP state-space growth and special scenario reduction tec...
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ژورنال
عنوان ژورنال: Transportation Research Record: Journal of the Transportation Research Board
سال: 2011
ISSN: 0361-1981,2169-4052
DOI: 10.3141/2220-11