فصلنامه مدیریت زنجیره تامین
پیاپی 38 (زمستان 1391)

In this paper, for evaluating and optimal selecting of third-party logistics providers, an integrated approach is proposed that combined QFD, FMEA and Fuzzy AHP techniques. In this approach, proportional to outsourcing company stakeholders’ requirements, evaluation factors are introduced by using of quality houses. The importance level of each stakeholders in decision-making process, weighted relationships of each evaluation factors in proposed approach, are calculated by using of Fuzzy AHP and finally the FMEA approach is used for analyzing likely risks that affect the performance of supply chain. Proposed approach in comparison to other developed approaches, not only consider the voice of outsourcing company’sstakeholdersin decision-making process, but also analyze the risks for perform the logistic outsourcing process in the best manner. In order to prove efficiency, proposed approach is used for a foodstuffs manufacturer company in a case study research.

In recent years, managers and top officials of governmental and military organizations have considered outsourcing as a method for developing their organization, increasing productivity and decreasing non-core operations. But it should be noted that we still have to pay great attention even after outsourcing. In fact, organizations should analyze the outsourced operations and enhance their outsourcing operations based on their achievements, also organization strategy and quantitative and qualitative risks should be managed [11].Outsourcing can be analyzed from different aspects. In this article, a model based on outsourcing analyze in terms of productivity will be proposed. In the proposed procedural model about TFP pattern and extended division method, outsourcing productivity will be analyzed.Variables in the extended division method include: given value, staff number, labor factor share from given value, value of intermediate consumptions, share of intermediate consumptions from given value and value of investment services. In this article, outsourcing of staff salary in a military organization will be reviewed as a case study.Results suggest that productivity level has been 445 in 2007 but it has increased to 1153,1166 and 1229 in 2008 to 2010.Based on these results we can claim productivity level has been increased in recent years, also we can use the proposed model for analyzing all kinds of outsourcing.Target of current research is to propose a model for measuring productivity level of outsourcing. This research is applicable, descriptive and surveying. The studied society is experts group of productivity and outsourcing area and the tool for validating the model is questionnaire. Validity of questionnaire questions is based on Lawshe formula and validity of the whole questionnaire is tested using Cronbakh alpha=0.86, and the questionnaire was validated using ending two sentence examination, therefore proposed model is known as valid because of validity and ending tests, also performance of model was measured in the case study.

Distribution and transportation system design is one of the most important problems faced by distribution companies. In recent years, two major problems in distribution and transportation networks design i.e. distribution centers location and vehicle routing are considered simultaneously, so location-routing problem (LRP) has been created. Since LRP is composed of two NP-hard problems, it is NP-hard too. In this research, in order to actualize problem, more constraints have been considered, therefore there are multiple commodities in distribution network and vehicles are capacitated and time-constrained. The respected mathematical model is proposed and then due to problem’s magnitude, only small instances are generated and solved by LINGO 8.0.

One of the most important aspects of multi echelon inventory management systems is related to spare part; actually, in the real world, it is more economical to repair equipment than replace them. Also, it is possible to benefit from discounts when more spare parts purchased from an external supplier. So, this paper considers a multi-echelon spare-part inventory system with backorders and quantity discount of external supplier and applies a network approach for modeling and solving these problems. Numerical example shows the efficiency of this algorithm.

Growing external competition, decreasing internal expenses and improving productivity, have forced many companies which are involved in supply chain to initiate radical changes and focusing on BPR. Nowadays BPR is one of the favorite ways to optimum management of supply chain management< dealing with challenges and problems. This article not only investigates the concept of BPR but also reviews the most important methods and recent models. Obviously it helps to understanding BPR concept and provides guidance to implementation of BPR in organizations.

Transportation is a challenging issue in the context of operation research. Many of companies expend a lot of money for transportation activities. So, trying to found the good methods for management and planning of the transportation systems is important. Arc routing problem is one of the issues of transportation that have attracted many researches in recent years. Concerning real world application, variant models have been developed by researchers. This paper gives a brief review of the capacitated arc routing problem, and its applications, and some of the solution algorithms. The purpose is to recognize the main attributes of the capacitated arc routing problem, summarize related computational experience, and give the ideas for future research.