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    International Journal of Operations Research and Optimization (IJORO)




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    1 An Inventory Policy for the Weibull type Demand under the Variable Deterioration rate with effect of Inflation and Partial Backlogging

    Author: Abhinav Goel, Mohd. Aftab Ali,(Pages:167-190)
    Email: aftabkhan307@gmail.com          DOI: N/A

    Abstract:In this Paper we consider an inventory model for the deteriorating items with Weibull type variable demand under the effect of inflation. Since in today’s market, advertisement works as a promotional tool to increase the demand so we consider it as quadratic dependent on the frequency of advertisement and time. The shortages are allowed at the end of replenishment cycle and partially backlogged. A permissible delay period is allowed by the vendor to buyer. An allowed trade credit period works as an incentive tool for the buyer and as a promotional tool for the vendor. Three different cases based on allowed trade credit period are discussed in the model. Numerical example for different cases and sensitivity analysis with respect to different system parameter are presented to illustrate the model. The convexity of the total cost function has also been shown with the help of graphs. Keyword: Deterioration, Permissible Delay, Weibull Type Demand, Shortages, Partial Backlogging, InflationDownload:

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    2 A Literature Review on Simulation Models to Deal with The Multi- Echelon Inventory Control System

    Author: Sandeep Kumar,(Pages:191-206)
    Email: drsk79@gmail.com          DOI: N/A

    Abstract:Inventory management is a key lever in supply chain management. The ability to manage inventory, businesses can avoid high inventory levels, while providing a high level of customer care. With the current increase in the complexity of the supply chain, multi-level inventory management has become a challenging and interesting area of research. In particular, the integration of the entire system, which allows you to manage the inter-dependencies between the various parts of the supply chain. Today is the day, to solve the problem of multi-level inventory control; by means of analytical models is not enough anymore. Many researchers have developed simulation models to overcome the limitations, a mathematical model representing the dynamic behavior of the various parameters that are involved in the multi-level inventory systems. In this article an overview is given for the use of modeling in order to create a multi-level inventory management decision. Classifications of the different simulation models of multi-echelon inventory character of the systems that are used in the literature are also identified. Keyword: Simulation, Multi- echelon inventory systems, Inventory control, Supply chain managementDownload:

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