This paper presents an inventory model for deteriorating items over a ®nite time horizon where the demand increases linearly with time. The method is developed by assuming that the successive replenishment cycle lengths are the same. Many O.R. scientists/researchers obtained an optimal replenishment schedule where the replenishment cost is constant in each cycle length over the ®nite time horiz...

There is a growing consensus that a portfolio of customers with different demand lead times can lead to higher, more regular revenues and better capacity utilization. Customers with positive demand lead times place orders in advance of their needs, resulting in advance demand information. This gives rise to the problem of finding effective inventory control policies under advance demand informa...

Upselling is offering an additional product to a customer who just made a purchase. Most catalogers and online sellers in addition to some traditional retailers use upselling. One of the reasons that firms use upselling is to clear inventories of slow-moving items. We investigate the pricing and discounting questions for such an item, which we call the promotional product. In our model, an arri...

the aim of present research was to investigate psychometric properties (reliability ,validity and factor analysis) of children depression inventory (kovacs,1981) in boy and girl students of junior high schools in ahvaz. 399 boy and girl students were randomly selected by multi-stage sampling. the results of factor analysis extracted six factors. among those, the greatest proportion of variance ...

This paper develops a more general production-inventory model for a one-buyermulti-vendor integrated system. We consider the problems where a manufacturer faces problem from the supply side when sourcing a product from heterogeneous suppliers. The model is extended to the situation with shortage permitted, based on shortage being allowed to occur only for the buyer. A numerical example and sens...

The cooperation strategy followed by the buyer and vendor results is an overall effect on the saving percentage along with the impact of inventory costs such as holding cost, fixed and linear backorder cost. This paper deals with buyer vendor incentive inventory model with fixed lifetime product with fixed and linear back order cost. A distinguishing feature of this model is that both fixed and...

A production inventory model with linear trend in demand is developed. Different deterioration rates are considered in a cycle. Shortages not allowed. To illustrate the model numerical example is provided and sensitivity analysis is also carried out for parameters.

An inventory model for deteriorating items with stock and price dependent demand is developed. Holding cost is considered as function of time. Shortages are not allowed. Numerical examples are provided to illustrate the model and sensitivity analysis is also carried out for parameters.

This paper develops a more general production-inventory model for a single-vendor–single-buyer integrated system. Unlike the hitherto existing production-inventory models for the vendor–buyer system, the present model neither requires the buyer’s unit holding cost greater than the vendor’s nor assumes the structure of shipment policy. Secondly, the model is extended to the situation with shorta...

Life cycle sustainability assessment (LCSA) is a still relatively new technique. One of its main application challenges is interpreting the three dimensions of its results in combined fashion. This paper presents the first attempt at an integrated solution-oriented approach in the LCSA, while simultaneously interpreting the results of the three assessments in a combined fashion toward improving...