inventory model,   backorder   buyer ,   vendor,   lot for lot policy In this paper, an inventory model for two-stage supply chain is investigated. A supply chain with single vendor and single buyer is considered. We assume that shortage as a backorder is allowed for the buyer and the vendor makes the production set up every time the buyer places an order and supplies on a lot for lot basis...

This study proposes a new multi-item inventory model with hybrid cost parameters under a fuzzy-stochastic constraint and permissible delay in payment. The price and marketing expenditure dependent stochastic demand and the demand dependent the unit production cost are considered. Shortages are allowed and partially backordered. The main objective of this paper is to determine selling price, mar...

This paper presents a comparative cost performance study of four inventory models. One of them, referred as Requirement Planning, operates using demand forecast to quantify the acquisition decisions. The other three inventory models are the Order Up to Maximum Inventory Level, Base Stock and Fixed Lot Size. The Requirement Planning and Base Stock models operate with minimal purchase order quant...

Here, a fuzzy inventory model for deteriorating items with shortages under fully backlogged condition is formulated and solved. Deterioration rate and demand are assumed to be constant. Shortages are allowed and assumed to be fully backlogged. Fuzziness is introduced by allowing the cost components, demand rate and the deterioration. In fuzzy environment, all related inventory parameters are as...

A new bound is proposed relating the average cost sub-optimality of a myopic policy to its differential cost error. The bound is an expectation over the stationary distribution for this policy. For small queueing networks, we compute or approximate the distribution using the matrix analytic method and numerically test the bound. Product form approximations to the stationary distribution are als...

The management of remanufacturing activities requires new techniques in order to improve these systems for cost optimized operations. However, several factors make the operations of the reverse logistics process difficult. In particular, uncertainties in quantity, quality and timing of returns negatively affect remanufacturing activities such as production planning and inventory control. In thi...

Purpose: Conducting analysis on the current inventory control and proposing suggestions improvements related to in SMEs Y using Material Flow Cost Accounting (MFCA) approach. Research methodology: This research adopts a case study approach with methods including observation, document interviews. Results: Based summation of raw material costs, energy system total allocation product costs loss ca...

Purpose: The aim of this study is to examine or analyze the inventory by integrating analyzes ABC and VED take advantage their advantages together forming an ABC-VED matrix classify according cost criteria functional importance items. Theoretical framework: consists analysis, then matrix. Design / Methodology Approach: researcher relied on case approach in research, due multiplicity features be...

In this paper, we consider a buffer allocation problem in manufacturing flow lines with series-parallel network structure where nodes correspond to buffers of finite capacity, and arcs the machines. The machines are supposed be unreliable, their time failure repair assumed exponentially distributed. Different may have different production rates all deterministic. is determine capacities respect...