For many years, purchasing and supplier performance evaluation have been discussed in both academic and industrial circles to improve buyer-supplier relationship. In this study, a novel model is presented to evaluate supplier performance according to different purchasing classes. In the proposed method, clustering analysis is applied to develop purchasing portfolio model using available data in...

this paper considers the fuzzy inventory model for deteriorating items for power demand under fully backlogged conditions. we define various factors which are affecting the inventory cost by using the shortage costs. an intention of this paper is to study the inventory modelling through fuzzy environment. inventory parameters, such as holding cost, shortage cost, purchasing cost and deteriorati...

the relationship between productivity of economic sectors, effective real exchange rate, and purchasing power is a burning economic issue. based on the “balassa – samuelson” theory, higher economic productivity for tradeable goods leads to an increase in effective real exchange rate which is indicative of higher value of domestic money and higher purchasing power of money. the purpose of this s...

In this paper, we consider a newsvendor who is going to invest on dedicated or flexible capacity, our goal is to find the optimal investment policy to maximize total profit while the newsvendor faces uncertainty in lead time and demand simultaneously. As highlighted in literature, demand is stochastic, while lead time is constant. However, in reality lead time uncertainty decreases newsvendor's...

Background & Objctives: With regard to unclear government approach in the insurance sector, multiplicity of rules, high share of households, improper population coverage and lack of cost-effective interventions, this study aimed to analyze the current status of basic health insurance in Iran and its distance from the desirable  status according to upstream documents. In addition, we attempted t...

In this article, real exchange rate behavior and its effects on macroeconomic variables are studied by explaining two models; impulse function and forecasting predicted error decomposition. Studies show that high artificial currency value has caused domestic and foreign accounts equilibrium disturbance and foreign income decrease due to the slackening of commercial and agricultural activities, ...

Modern societies belief life insurance scheme, which is designed to be backbone of man survival, ensure financial security and offers readymade source of long term capital financing for the infrastructural project is capable of combating the besetting problem of man so that life can be made easy and continuous. The dramatic increase in competition within the insurance sector and the needs of in...