we developed an inventory model for decaying items with selling price dependent demand in inflationary environment. deterioration rate is taken as two parameter weibull distribution. shortages in inventory are allowed with partial backlogging. backlogging rate is taken as exponential decreasing function of time. profit maximization technique is used in this study.

In the explosive growth of Business to Business (B2B) Electronic Trades, electronic markets have received a great deal of attention recently. The obtained profit of trading in E-B2B market encourage market participants to remain in the market. Market participants consist of: sellers, buyers, and market owner. In this paper the expected profit function for each market participant has been define...

in this research two models for pricing and inventory decisions of complementary products with and without deterioration assumption are developed. in both of them, we assumed that the demand function of each product is dependent on own price and the price of another one. the aim of this paper is to optimize the total profit of integrated system such that the optimal values for the price of each...

The objective of present study was to derive the economic values for number of inseminations to conception, calving interval, milk yield and stillbirth, using economic data of 10 Iranian Holstein herds. The economic values were derived by using the profit function methods and differentiating a profit equation with respect to the traits of interest. The cow fertility costs herd amortization or r...

We use simulation-based approach to find the optimal feeding strategy for cloned invertase expression in Saccharomyces cerevisiae in a fed-batch bioreactor. The optimal strategy maximizes the productivity and minimizes the fermentation time. This procedure is motivated from Neuro Dynamic Programming (NDP) literature, wherein the optimal solution is parameterized in the form of a cost-to-go or p...

in classic inventory control system, we assume that purchasing cost should be paid at time of delivery. but sometimes in order to encourage retailer to increase his order, postpond payment is provided by supplier as an incentive policy for retailer. in this paper a periodic inventory control model is invetigated in which the period between two consecutive replenishmnet is a random variable. in ...

Industry in Ukraine is among the world’s most energy intensive. Energy was plentiful and cheap in Soviet times and little effort was made to conserve it. Rising energy prices have had a major impact on profits and production, which also creates a tremendous market potential for energy efficient products and services. Yet Ukrainian industry has not implemented significant energy efficiency measu...

The neoclassical theory of investment implies that expected stock returns are tied with the expected marginal benefit of investment divided by the marginal cost of investment. Winners have higher expected growth and expected marginal productivity (two major components of the marginal benefit of investment), and earn higher expected stock returns than losers. The investment model succeeds in cap...