DWT is a tool for the maintenance of data warehouse structures based on the temporal data warehouse model COMET. Data warehouse systems do not provide support for maintaining changes in dimension data. DWT allows keeping track of modifications made in the dimension-structure of multidimensional cubes stored in an OLAP (On-Line Analytical Processing) system. We present the overall structure of t...

The World Wide Web contains a huge and increasing volume of information. The web warehouse is an efficient and effective means to facilitate utilization of information on the Web, not only to individual users but also to business organizations, especially for decision-making purposes. On the other hand, XML has recently become the new standard for representation and exchange of data on the Web....

Original scientific paper Warehouse management is one of the most important legs in supply chain operations and production management. To support that warehouse execution, a warehouse management system is required. Many warehouses have used various methods to handle this difficult and time consuming evaluation process. The purpose of this paper is to provide a decision support model to make a c...

Any industry has its own supply chain where it is not necessary to have all stages in the supply chain and the optimal o rdering policies of those indiv idual stages may be different. This paper p resents an extension of two–level supply chain inventory model d iscussed in related works. The main consideration of this paper is to determine the optimal ordering policy according to inventory and ...

A study of two warehouse inventory systems with a production unit is developed in this article some constraints which are practical applicability to optimize the total cycle and its cost. evolves three different states retain quality prolong lifetime: state producing items, reworking identified defective being idle. It processes items up certain time point. The screening process starts immediat...

Data warehouse systems integrate data from heterogeneous sources. These sources are autonomous in nature and change independently of a data warehouse. Owing to changes in data sources, the content and the schema of a data warehouse may need to be changed for accurate decision making. Slowly changing dimensions and temporal data warehouses are the available solutions to manage changes in the con...

The pre-build development of warehouse systems leads from a specific customer request to a specific customer quotation. This involves a process of configuring a warehouse system using a sequence of steps that contain increasingly more details. Simulation is a helpful tool in analyzing warehouse design alternatives, but setting up a detailed simulation is too expensive early in the development p...

Many earlier studies dealing with the two-warehouse inventory model assumed that the direct cost of the product was irrelevant and that production processes are perfect and stationary. However, in the real world, the purchase cost is some function of the quantity purchased and the production processes may deteriorate and thus defective items will occur. This paper, therefore, aims at developing...

We consider the one-warehouse multiple retailer inventory model with a submodular joint setup cost function. The objective of this model is to determine an inventory replenishment policy that minimizes the long-run average system cost over an infinite time horizon. Although the optimal policy for this problem is still unknown, a class of easy-to-implement power-of-two policies are 98% effective...