In this paper, to cope with the stochastic dynamic (or multi-period) problem, two new quadratic assignment-based mathematical models corresponding to the dynamic and static approaches are developed. The product demands are presumed to be dependent uncertain variables with normal distribution having known expectation, variance, and covariance that change from one period to the next one, randomly...

The basic assumption in the traditional inventory model is that all outputs are perfect items. However, this assumption is too simplistic in the most real-life situations due to a natural phenomenon in a production process. From this it is deduced that the system produces non-perfects items which can be classified into four groups of perfect, imperfect, reworkable defective and non-reworkable d...

Coordination and harmony between different departments of a company can be an important factor in achieving competitive advantage if the company corrects alignment between strategies of different departments. This paper presents an integrated decision model based on recent advances of geometric programming technique. The demand of a product considers as a power function of factors such as produ...

The goal of this paper is to introduce the RCFA (Recursive Cost Function Adaptation) algorithm. The derivation of the new algorithm does not use an estimator of the instantaneous error as the previous CFA (Cost Function Adaptation) algorithms did. In the RCFA case, the new error power is computing from the previous error power using an usual LMS recursive equation. The proposed method improves ...

An exploratory home health care (HHC) cost-function model is estimated using State rate-setting data for the 74 traditional (nonprofit) Connecticut agencies. The analysis demonstrates U-shaped average costs curves for agencies' provision of skilled nursing visits, with substantial diseconomies of scale in the observable range. It is determined from the estimated cost function that the sample re...

A cooperative game in partition function form is proposed for a cost allocation problem. The game describes a real situation in which a payoff of any coalition does not only depend on the players in the coalition but also on the coalition structure of the other players. Solution concepts like the stable set and the core are analyzed. Relations of the concepts in the case of the game in partitio...

Many industries thrive on their ability to provide rapid and efficient services to customers. Attaining this goal is particularly critical for life sensitive service providers like fire departments and emergency medical services (EMS). This issue is complicated by the possibility that a vehicle may be unavailable when called for service. In this paper we analyze current techniques for locating ...

Rangeland ecosystems provide a wide range of services such as gas regulation function whose economic value has not been understood. The present study aimed to estimate the economic value of CO2 absorption and oxygen generation services using unit price in Sheikh Musa Rangeland, Mazandaran Province, Iran. In the study area, clipping and weight and photosynthesis methods were applied to estimate ...

This paper proposes the minimization of a new cost function while training backpropagation (BP) neural networks to solve pattern classiication problems. The new cost function is referred to as the gain-weighted normalized-target mean-square error (GWNTMSE). The paper proves that the minimization of the GWNTMSE is optimal in the sense of yielding network classiier with minimum variance from the ...