فصلنامه مطالعات مدیریت صنعتی
پیاپی 28 (بهار 1392)

The Customs Tariff is based on the World Customs Organization's (WCO) Harmonized Commodity Description and Coding System (HS) and its impact of industry competitiveness is known for everyone. In this paper, by considering IRAN I.R. industries,the impact of change in custom tariff on domestic industries have been analyzed. Many models have been used to analys and evaluate the effect of change in custom tariff on domestic industries. In this paper System Dynamics(SD) approach and modeling has been used to describe this problem. By using Casual Loops(CL) and also Stock And Flow diagram(CFD), the model of problem has achived. At next step, depending on the type of variables(State variable, Rate variable, Auxiliary variable, parameters, …) the relation of variables are identified and the model is completed. At final step the model was sumilated and run by VENSIM software and the results were outcomed. This paper declares that decreasing the custom tariff will improve domestic industries competitiveness in long terms by developing the infrastructure of domestic industry for gaining more market share.

Economic Development of countries caused damages in environment and society. This issue created three dimensional concept for development, based on economy, society and environment that named as a sustainable development. Mining industry is one of the industries that always faced with challenges of sustainable development. Based on this issue and based on need for evaluation tools in sustainable development, this article is specified to recommending suitable tool for evaluating sustainability of development in mining industry. For this purpose after investigation of literature, balance scorecard recognized as a suitable tool, then international indicators are localized based on the expert opinion and Iran mining industry situation, and put in BSC aspects. Finally by using AHP method importance weight of BSC aspects and indicators calculated for recommending quantitative tool to mining industry organizations.

One of the important issues in project management is project portfolio selection. Issue of project selection and related activities is one of the important activities in most of organizations, especially contract companies and developing project centered companies. Issue of project choosing is a periodical activity for choosing suitable portfolio from suggested projects or organizational in process projects which enforce organizational goals in a desirable manner, without spending additional sources or / and neglecting other limitations.. In project portfolio selection, the most important issue which bring up is that this portfolio should conclude which projects. As much as project portfolio selection be more advisable, fulfilment of organization duties would be more probable. In choosing this combination, distinguishing opportunities, assessing amount of project cooperation with goals and organization structure and expenses, profit analysis and project risks has a great importance. In this research has been used from qualitative and quantitative assimilated approach for project portfolio selection. In a way that at first we use DEMATEL (Decision Making Trial and Evaluation Laboratory) method to selection criteria and then with use Data Envelopment Analysis and criteria that selected in previous stage, calculate the efficiency for each project and rank all of them.

Competitiveness is core of businesses in market economics. It means the ability and performance of a firm, sub-sector or a country to sell and supply goods and/or service in a given market. Porter's competitiveness forces model is one of the most well-known framework for analyzing the competitiveness of firms, that has been extensively used to develop and formulate the competitive strategiesof firms in order to increase their competitive edge. The aim of this article is to be measure and analyze Irankhodro firm's competitiveness with using Porter's competitiveness forces model to select a competitive strategy. A questionnaire survey is conducted for collecting research data from Irankhodro firm's managers and expert employees. Then research data is analyzed by fuzzy model based on integrating fuzzy AHP and DEA.The findings of research show: a. the most important of competitive forces with which Irankhodro firm faces, are rival firms competitive intensity and the threat of entry of new competitors. B. Irandkhodro firm was fierce with high fix cost, perceived level differentiation, exist barriers allocation per value added, degree of differentiation of inputs, supplier concentration to firm concentration ratio, buyer propensity to substitutes, switching costs of suppliers relative to firms switching cost. These sub-factors can decrease Irankhodro firm's competitiveness level. C. Irankhodro firm's competitiveness level is moderate, and focus strategy based on cost leadership is the most proper of competitive strategy in order to sustain and enhance competitive power.

This paper uses a panel data stochastic production frontier model to measure economic efficiency of car production industry in Iran. We estimated both time-variant and time-invariant efficiency random effect models. The result shows that economic efficiency in this industry varies overtime between 96.4 to 97.3 percent. The results also show that industry is increasing return to scale.

In this Paper we have used various indices to describe the characteristics of Iran Manufacturing Industries during 1995-2009.We have also estimated empirically the Impact of structural changes on employment generation. The result show that structural changes in output and employment of Iran Manufacturing Industries have been accompanied by a movement away light and consumer non -durables such as Food and Textiles, towards heavy and Capital goods industries producing consumer durables, capital and Intermediate goods. The shift has been basically from low to high labor productive Industries. Our empirical Model too has shown a significant impact of structural changes on employment generation on Manufacturing Industries in Iran. The finding shows that the decrease in the employment share of industries such as Textiles and Food industries have been overcompensated by increase in the employment of electrical and non electrical machineries and transport equipments, indicating the tendencies of manufacturing industries move towards energy intensive and resource based industries such as chemicals and petrochemicals and oil refineries, Machineries and transport equipments.

One of the effective key factors in differentiating and outrunning competitors is the continuous delivery of superior quality to the customers. The secret of success is meeting or getting ahead of customer’s expectations in relation to service quality. By considering the fact that service quality plays an important role in the success of today’s organizations, this article pursues the purpose of investigating the dimensions that have effect on technical services quality of petrochemical commercial company’s sale engineering department, determining the most important service quality dimensions, measuring the gaps existing in the service delivery system and finally promoting and improving the current status of the system. We used the Servqual Model to assess the quality of the services. In this study we tried to customize the model to adapt the specific conditions of the organization, so the Tangibles dimension of the standard model was replaced with service variety and confirmatory factor analysis approach was used to examine the theoretical model of the study. The modified model was analyzed by Lisrel and its validity was confirmed from a statistical point of view. The results of data analysis by SPSS showed that the sale engineering department’s service delivery system was encountered with problems and so the existence of service gaps was proved. Finally practical solutions were provided to promote the service quality and improve the current status of the system.