Demand considered in most of the classical inventory models is constant, while in most of the practical cases the demand changes with time. In this article, an inventory model is developed with time dependent two parameter weibull demand rate whose deterioration rate increases with time. Each cycle has shortages, which have been partially backlogged to suit present day competition in the market...

This paper considers a credit mechanism for selecting a unique competitive equilibrium (CE). It is shown that in general there exists a “price-normalizing” bundle, with which the enlargement of the general-equilibrium structure to allow for default subject to appropriate penalties results in a construction of a simple credit mechanism for a credit using society to select a unique CE. With some ...

This paper presents a small macroeconometric model examining the determinants of Indian trade and inflation to address the effects of a reform policy package similar to those implemented in 1991. This is different from previous studies along one important dimension that we explicitly incorporate the non-stationarity of the data into our model and estimation procedures, which suggest that the st...

• Two-echelon vehicle routing problem with three important real-world extensions. Simultaneous handling of reverse flows, satellite capacities, and timing aspects. Matheuristic solution approach combines different decomposition strategies. New for efficient feasibility testing local-search moves. Last-mile collection delivery services often rely on multi-echelon logistic systems many types prac...

Modern business environment focuses on improving the operational efficiency of supplier, retailer and customers through integrating their inventory. Although a smoothly running integrated inventory system is ideal, the reality is to deal with imperfectness in transportation. In actual production environments, inventory items are not perfect and defectiveness occurs in random process.  In this p...

We consider a multi-sector Ricardo-Viner model of an economy in which factor mobility is inhibited by a credit market imperfection and use it to address a number of standard questions in trade theory. Opening the economy to trade will tend to increase inequality in a poor country (understood as one with badly developed credit market institutions). Trade volume between poor and rich countries ma...

This paper explores the consequences of using supplier trade credit within a vertical relational contract. The downstream firm operates in an environment where shocks may make it unable to repay. The shocks are unobservable to the supplier, which creates an asymmetric information problem. Trade credit limits the supplier’s possibilities to punish the downstream firm and termination is used in e...

In most inventory models it is assumed that the parameters of the model do not vary with time, and that the payment of orders from the retailer to the supplier is made immediately up on the receipt of these orders. Some suppliers, however, allow a certain fixed period to settle payment accounts. During this fixed period no interest is charged by the supplier, but beyond that period an interest,...

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