Showing 1 - 10 of 653,099
This paper is concerned with the problem of production planning in a flexible manufacturing system consisting of a single or parallel failure-prone machines producing a number of different products. The objective is to choose the rates of production of the various products over time in order to...
Persistent link: https://www.econbiz.de/10012835293
The paper is concerned with the problem of optimal production planning in deterministic pull flow lines with multiple products. The objective is to specify the production policy that minimizes the total inventory and backlog costs overtime. Assuming constant product demands and non-decreasing...
Persistent link: https://www.econbiz.de/10012772150
We study a two-stage purchase contract with a demand forecast update. The purchase contract provides the buyer an … opportunity to adjust an initial commitment based on an updated demand forecast obtained at a later stage. An adjustment, if any … of demand distributions. We also discuss how these results can be applied to gain managerial insights that help in making …
Persistent link: https://www.econbiz.de/10012837583
This article analyzes a discrete time lost sales inventory system with partially observed demand and unobserved … shrinkages which happen both before and after the demand realization. When the demand exceeds the remaining inventory, the unmet … demand is lost and unobserved. This problem in general has a nonlinear state evolution, and we use unmoralized probability to …
Persistent link: https://www.econbiz.de/10012838128
Markov-modulated processes have been used in stochastic inventory models with setup costs for modeling demand under the … have been carried out in the literature only under the assumption that unsatisfied demand is fully backlogged. The lost … Markovian demand model with backlogging to analyze the lost sales case; in particular, we establish the optimality of an (s, S …
Persistent link: https://www.econbiz.de/10014218592
The classical economic lot-scheduling problem (ELSP) involves the batch sizing and scheduling of multiple products in a single facility under deterministic conditions over an infinite planning horizon. It is assumed that the products are delivered to customers at continuous rates. In today's...
Persistent link: https://www.econbiz.de/10012935748
in each period based on the observed demand signal in that period. Moreover, the vendor is committed to a specific … with the possibility of supplementing it based on a demand signal observed at the second stage. The problem is to maximize … his expected profit subject to a constraint on his overall service performance across all possible values of the demand …
Persistent link: https://www.econbiz.de/10012757846
true for customer demand. As a result, stationary demand distributions are crude approximations of true customer behavior … comprehensive treatment of inventory models with Markov-modulated demand. The distribution of demand in these models depends on the …. Examples are products with cyclical and seasonal demands, products with distinct life-cycles or products whose demand …
Persistent link: https://www.econbiz.de/10014198970
In this paper, we develop a supply chain/logistics network model for critical needs in the case of disruptions. The objective is to minimize the total network costs, which are generalized costs that may include the monetary, risk, time, and social costs. The model assumes that disruptions may...
Persistent link: https://www.econbiz.de/10014187749
A single machine processing different types of parts is considered. Switching from one type to another involves a setup time. The part types may have different processing times. The resulting scheduling problem is treated as a dynamical system for which several feedback policies that are...
Persistent link: https://www.econbiz.de/10012746791