Browsing by Author "Vayvay, Ozalp"

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Citation Count: 5
A NEW SYSTEMATIC APPROACH FOR WAREHOUSE MANAGEMENT SYSTEM EVALUATION
(Univ Osijek, Tech Fac, 2016) Apak, Sinan; Tozan, Hakan; Vayvay, Ozalp
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 careful evaluation of warehouse management system. Purchasing an appropriate warehouse management system in a supply value chain is not an easy decision making and is related to fuzziness and uncertainty, which should be considered as a large number of complex factors in multiple evaluation criteria. A Fuzzy Multi Criteria Decision Making approach is adopted to effectively evaluate warehouse management systems. To provide a practical guidance for other companies a real life framework is presented with an application.
Citation Count: 77
Theory of Constraints: A Literature Review
(Elsevier Science Bv, 2014) Simsit, Zeynep Tugce; Gunay, Noyan Sebla; Vayvay, Ozalp
Theory of Constraints (TOC) is a management philosophy which is focused on the weakest ring(s) in the chain to improve the performance of systems. Companies, whether they are in the production or service sector should be more focused on understanding their own structure in terms of processes to survive in a global competition. In this situation, TOC becomes an important problem structuring and solving methodology which changes the way of thinking of managers. Since the TOC first put forth by Goldratt (1984) in his novel The Goal, the theory has drawn wide attention from practitioners and academic researchers. This study provides a review of the TOC evolution literature by its five era; the optimized product technology era, the goal era, the haystack syndrome era, the it's not luck era and the critical chain era. Our search at historical background and basic concepts of TOC aims to see how this philosophy evolves through time and how the main point of TOC researches changes. Crown Copyright (C) 2014 Published by Elsevier Ltd.