The present study aims to provide a model for financing buyer-supplier in Mehrvarzan healthcare Company. The statistical population of the study includes 300 employees of the company. According to Morgan table, 168 people are selected as the statistical sample. Available non-random sampling method has been used. For collecting the required information, the standard buyer-supplier financing ques...

Although many educational institutions allow students to resit exams, a recently proposed mathematical model suggests that this could lead to a dramatic reduction in study-time investment, especially in rational students. In the current study, we present a modification of this model in which we included some well-justified assumptions about learning and performance on multiple-choice tests, and...

This paper addresses the problem of reworking of defective items and develops an integrated cost model so as to minimize the extra costs of reworking/scraping of work pieces. Items to be reworked are the results of quality problem. To improve a product’s quality, the selection of process target is extremely important since it directly affects the process defective rate, material cost, rework or...

In this paper, we study the procurement of an innovation in which firms exert effort and create innovations, where the quality of innovation is stochastic. Both the effort level and the quality of innovation are unverifiable, and the procurer cannot extract up-front payment from the firms. Given the uncertainty of quality realization, there is a trade-off regarding the number of participating f...

We consider the problem of a single seller repeatedly selling a single item to a single buyer (specifically, the buyer has a value drawn fresh from known distribution D in every round). Prior work assumes that the buyer is fully rational and will perfectly reason about how their bids today affect the seller’s decisions tomorrow. In this work we initiate a different direction: the buyer simply r...

The Investment Model of relationship commitment uses interpersonal investment, relationship satisfaction, quality of alternatives, and commitment to predict relationship longevity (Rusbult, 1980, 1983). Although ample support for the Investment Model has been found in heterosexual couples, it appears to be less powerful in predicting stability in same-sex relationships (Beals, Impett, & Peplau,...

in this paper a two-stage supply chain with a buyer and seller have been studied. it is assumed that lead time is probabilistic and demand is fixed. in the decentralized model it can be observed each supply chain member try to make the decision to maximize their profits and it will effect on the other members of supply chain and in the comparison with centralized model with assuming the seller ...

Modifying the proof of a theorem of Wilkie, it is shown that if a one dimnsional set S is definable in an O minimal expansion of the ordered field of the reals, and if it is regularly exponentially near to many integral points, then there is an unbounded set, which is R definable without parameters, and which is exponentially near to S.

In this article we will describe some of the main developments in interest-rate modelling since Black & Scholes’ (1973) and Merton’s (1973) original articles on the pricing of equity derivatives. In particular, we will focus on continuoustime, arbitrage-free models for the full term structure of interest rates. Other models which model a limited number of key interest rates or which operate in ...