Economic analysis of production bottlenecks.
MSC 2010: 26A33, 33E12, 33C60, 44A20The classical economic production model (EPQ) has been extended in many directions to incorporate factors encountered in real-life situations. In this paper, an EPQ model that accounts for the cost of raw material needed for production is examined. It is assumed that the raw material acquired from the supplier contains a percentage of imperfect quality items. At the beginning of the inventory cycle, the raw material is received instantaneously, and a 100% screening...
To establish production plans or replenishment plans, firms use forecasting systems. Such a system is composed of a forecasting method and a lot-sizing method. We propose a scheme to evaluate the reliability of such a system. This evaluation is based on the impact of demand randomness on the long run total cost. The scheme is illustrated with a system including an exponential smoothing technique for the demand forcasting and the Florian and Klein [5] method for the lot-sizing. Simulation results...
Pour établir des plans de production et d'approvisionnements, une entreprise utilise un système de prévisions. Celui-ci est constitué d'une méthode de prévision de la demande et d'une méthode de lot-sizing permettant l'obtention de plans prévisionnels. Nous proposons une démarche permettant d'évaluer la fiabilité des prévisions fournies par un tel système. Cette analyse se base sur l'étude de l'impact des aléas de la demande sur les coûts induits par les plans prévisionnels. Nous avons appliqué...