فصلنامه مطالعات مدیریت صنعتی
پیاپی 16 (تابستان 1386)

The important factors affecting the information search process and following it the decision making for buying, have been widely under survey that the result of this survey shows that this ingredient includes: market specialty, product specialty, consumer specialty and situational condition. In case of consumer specialty, elements like social condition, age, degree of learning, people's knowledge with different kinds of products and their perception of risk have been accurately under survey. But this research for the first time in Iran by studying the consumer life style which consist of group of inside and outside ingredients have a comprehensive and supplementary point of view which trying to study the role of life style in Iranians kind of decision making for purchasing. Considering different existing defragment of consumer behavior we have four kinds of decision making including: extended decision making, limited decision making, decision making based of loyalty to commercial brand and compulsory decision making. In this research by the use of statistical methods including. r2 and Gamma coefficient have been processed the kind of dominant decision making in VALS life style consist of following innovators, experiences, achievers, believers by survey method. Finally it have been determine that the dominant kind of decision making for innovators is extended decision making and for achievers is limited kind of decision making but there isnt a considerable different between two remaining kinds of life style including experiences and believers. So as a result these two life styles will use the four kinds of decision making in the same.

In this paper we develop the concept of boring caused by doing the same jobs to two types of boring, negative or undesirable and positive or desirable, which are felt by operators because of doing similar jobs and not only due to doing the same ones. Based on this new concept, the flexible model has been proposed by which jobs will be scheduled to minimize the total cost of assignment including the cost of doing the jobs by operators and the boring cost so that job scheduled with respect to their similarities in the smallest time period as well as dissimilarities in the biggest given time period. For the reason that the proposed job rotation scheduling model has a multi-­period assignment structure and formulated as an integer non-linear model, it is recognized as a combinatorial optimization problem. So applying the metaheuristic algorithms to overcome the complexity of such a problem is required. We use the genetic and imperialist competitive algorithms to do that and verify their efficiency in comparison to that of Lingo software which solves the small integer nonlinear problems. It is also shown that the quality of imperialist competitive algorithm solutions is better than those of genetic algorithm for the proposed model.

Now days one of the main strategies and policies of firms is purchasing parts from external suppliers. For decision making about selecting suppliers, are considered the different criteria. But because of changes of management levels and external suppliers strategies, could not determine input data precisely. Hence, considering supplier selection problem with regard to the uncertain criteria is necessary. In this paper, a combinatorial model from the well-known method of Compromise Programming (CP) and Interval Programming will be proposed that is called Interval Compromise Programming (ICP). The model can be used for optimizing multi-objective interval problems. For illustrating the proposed model, will be presented a supplier selection problem by considering the objectives of minimizing rejects and purchase cost and maximizing quality of purchased products, where are considered the input parameters as interval numbers. The obtained results compared to the ideal value of each objective can present a representation from situation of optimistic and pessimistic of the problem under uncertainty.

One of the most important function of financial markets and especially stock exchanges is facilitating, accelerating and cost reduction in conversion of financial asset into cash and vice versa. Turnover velocity is the ability to buy and sell considerable amount of securities, quickly and with very little price effect. This feature has been defined for the market as a whole (Such as WFE calculate for its members monthly and yearly) and for individual securities as well. In this research liquidity index is defined as the ratio of the number of shares transacted and total number of issued shares. The relationship between stock liquidity index at time t and its 6 lags is tested among 242 Tehran Stock Exchange (TSE) listed companies during four years (2005 to 2008) in panel data. The stationarity of data is also approved by unit root test. The significant relation between stock liquidity at time t and 6 previous lags is approved, besides, significant relation between Amihud liquidity index and the ratio which be applied in this research is approved. But model's R Squared is not high enough to be a good model for forecasting.

The importance of education in advancement and development of information technology and communication technology has been stabilized as preparation for multilateral development of all countries. Development of these sciences can be regarded as basis for entrepreneurship in all fields. Development and growth of culture of entrepreneurship in working process of active institutes in the field of information technology and communication technology via empowering the employees is very important. In this research with studying the aspects of psychological empowerment the effects of these aspects on inter-organizational entrepreneurship process in Tehran Information Technology Complex have been studied. The total number of managers and employees of different organizational levels which equals to 145 people has been selected as sample society, which the results show that there is high level of correlation between the aspects of psychological empowerment and organizational entrepreneurship. Also the results show that among 5 aspects of psychological empowerment, having the feeling of competence has got the most effect on organizational entrepreneurship process. The results of present research can be used for preparing suitable strategies of human resource in relation to employees that have share in organizational entrepreneurship process and pave the way for a new path for university studying and operational experiences in the field of empowerment of employees, creativity & innovation.

Organizational environment has become more than any time complex, dynamic, and revolutionized. The changes trespass the make managers face with new challenges. Survival and excellence in such an environment is attainable solely with change and adoption with dynamicity. This article attends to cybernetic-scanning management influence which has structure with organization properties that base on cybernetic in organization learning process. Furthermore, attendance cultural learning properties and the role of that as a changeable intermediate. The socio-statistic research is three part of Iran - Khodro company staff and research data gathering with questionnaire. After investigating changeable aspect of reading the research discover is done with use of structural role and hypothesis examination which the consequence of that show accepting all hypothesis and positive role and impress (CSM) in learning culture and the organization role- model learning process. Finally, role-model fit is base on structural equation model and whit attention to data collection consequence of that is signify from suitable fit and acceptable intention role-model.

Selection of appropriate machine tools for a manufacturing company, because that effects on product process, is a very important. But by imprecise information, the selection will be complicated. The VIKOR method is one of new methods for solving problems of multiple criteria decision making where its objective is selecting the best alternative based on the closest feasible solution to the ideal solution. In this article will be proposed a fuzzy approach for the VIKOR method where rating alternatives and importance weights of criteria are considered as fuzzy numbers. Also in the proposed method, importance weight of DMs thoughts is considered different. For illustrating the proposed method, a numerical example about machine tools selection has been presented for illustrating the proposed method, where criteria of alternatives evaluation are flexibility, confidence ability and maintainability of machines.