نشریه مدیریت بهره وری
پیاپی 30 (پاییز 1393)

For many economic planners and policy makers, enhancing productivity has been one of the efficient methods in increasing economic growth. Based on that, countries have invested a great deal to increase total factor productivity. In this article, the effect of human capital, openness to trade and inflation on total factor productivity has been investigated in Iran during 1976-2012. We estimated total factor productivity TFP, using Malmquist index. We also investigated the effects of various factors on productivity, using Johansen and Juselius’ co-integration techniques. Our findings indicate that human capital has a positive effect on productivity. We also found that openness has a positive and inflation has a negative effect on total factor productivity in Iran.

This article is the outcome of the MA dissertation the aim of which is to determine the role of blood groups on the performance of the personnel of Tabriz Justice Administration, because identifying that part of the human characteristics that affects his performance, especially the genetic factors with which the individual joins the organization can partly help the organization to select the proper person to assign tasks to him in order to realize the organizational goals. In order to do the research, we selected 200 perple from among the personnel by using random classified method and distributed among them the performance measurement questionnaire, which had been designed at Likert Scale so that we could measure the relationship between his blood group and the performance of the personnel through the use of Survey – descriptive method. To test the research hypotheses, too, we used oneway variance analysis and Scheffes post hoc test, and we were able to find a significant correlation between the personneis blood groups and their performance.

In this investigation, some of the variables effective on the productivity of customer-contact employees affecting customer perception of perceived service quality as well as the relations among the responses have been tested in the form of a conceptual model. In other words, the role of three major personal characteristics of employees ( self-efficacy, adaptability and job satisfaction), as a bridge between the employee's job characteristics (role conflict and role ambiguity) and customer perceived service quality have been investigated.In order to collect data through using census, the relevant questionnaires were distributed among the members of the first statistical population ( the employeesof private banks in Khuzestan Province totaling 94 people). In this way, 94 customer questionnaires were specialized to the banks by stratified sampling ; then, the bank questionnaires were distributed among their customers by random sampling .The results of the structural equations analysis indicated that with due attention to obtained goodness of fit index, the supposed model has been welldesigned. With due attention to the coefficients obtained from the model test, the 12 suggested hypotheses can be accepted or rejected. As predicted, employee's self-efficacy and job satisfaction have a positive structural effect on customer perceived service quality. Employee's self-efficacy positively affects employee's adaptability with the customer. Contrary to all expectations, the results indicated that employee's adaptability negatively influences customer perceived service quality. And as predicted, it was proved that the employee’s role conflict and role ambiguity have a negative structural effect on employee's adaptability and self-efficacy. Also, employee's role conflict positively affects employee’s role ambiguity. Finally, the results indicated that employee’s role ambiguity has a limited positive effect on employee's job satisfaction. It is worthy of mention that because the relevant coefficients were too small, it is difficult to make a comment on employee's role conflict and self efficacy effects on job satisfaction.

Organizational stress, in addition to threatening employees’ health, adversely affects the quality and quantity of their performance. The aim of this study was to determine the relationship between the performance of managers and employees’ stress in Kerman public organizations. The study was a descriptive-correlation study performed after stratified random sampling. A total of 300 questionnaires were distributed among the employees. To determine the correlation, Spearman correlation test, to analyze the data log–linear analysis, and to compare the variables chi-square test were used. Data analysis was performed through spss18. There was a significant relationship between employees’ stress and the performance ofmanagers. Stress was significantly higher among female, married, older employees, those with educational level of bachelor and higher and those with less than 20 years job experience. Regarding the importance of human resources in the development of societies and in order to achieve the goals of health system and sustainable development, policy makers and human resource managers could implement strategies to increase the efficiency of resource managers and their ability to benefit from available resources more efficiently.

Today, the level of a country's development is directly related to its international trade volume. Using the export-oriented development strategy, countries can achieve growth in national production and therefore increase employment.The necessity to develop non-oil exports in Iran's economy to achieve these goals and to solve the problems due to economy's dependence on oil revenues, particularly in the current period is important. Development of investment and the growth in non-oil exports are important factors in realizing national production goals. Accordingly, the role of science in the economy, due to creating expertise and improving the productivity of production factors, has long had been the focus of attention. Therefore, the present study, by using time series data and Vector Auto Correction (VAR) Model, has tried to investigate the effects of the efficiency of production factors, information and communication technology, and foreign direct investment on non-oil export growth during 1971-2008. The results confirm the impact of the mentioned factors on non-oil exports and clarifies the ways to consider those factors with regard to trade policies.

According to the viewpoint based on resources, the superior performance of organizations can result from their unique resources, integration of resources and ability to respond to the user's environment. According to this viewpoint, the difference in organizations performance is due to the fact that successful organizations possess the strategic resources (physical, human, and organizational) that their competitors lack. Thus, differences in resources have an important role in creating profit for the organization. Among the firm's resources is intellectual capital, which has three dimensions: human, structural and communicational Hence, this study investigates the role of intellectual capital and tendency to entrepreneurship and their effects on the firm performance. The study is a descriptive, survey analysis, which draws on census – taking method .The data were collected from the small and medium firms of Wood and Wood Products industries in Mashhad and analyzed through the use of PLS software. The results indicated that tendency to entrepreneurship has a significant effect on firm performance. In addition, they showed that of the three dimensions of intellectual capital, the communicational capital has the highest rate of effect on the performance of the organization.

The Supply network Viewpoint obliges the companies to expand the Scope and network of their business activities that need management. The complexity of these activities has increased with the globalization of the networks and the geographical diversity of the participants and customers , so their management has become more difficult . During the past years numerous researches have acknowledged the inefficiency of the previous methods in studying the complexity of supply chain as well as their inability in identifying the presence of suppliers on various layers of supply network and have emphasized the necessity of using social networks analysis in studying the complexity of supply chain . The present article has surveyed the supply network of Tractor Motor Manufacturing company by using social networks analysis method and has come to the conclusion that this network contains several structural ruptures , that Motor Manufacturing company possesses a high level of bargaining against suppliers , and that the network has a low innovative power.

This research has been developed to identify the relationship between knowledge management processes and social security organization staff empowering in Ardabil province .In fact , the major and basic question of the research is , ((Is there any relationship between knowledge management processes and staff empowering in the social security organization of Ardabil Province)). In order to analyze the question, knowledge management factors based on Lawson model were analyzed. Spreitzer model has also been used to analyze the empowering situation. The Standard questionnaire for knowledge management processe and its factors as an independent variable includes 24 questions and that of empowering as a dependent variable includes 15 questions. Content validity procedure and views of university professors were used for validity test. The reliability coefficient of the questionnaires was 80% and because Cronbach alpha of the questionnaires was more than 70%, both questionnaires had the needed reliability. The testees are 140 members of social security organization that have been chosen by random sampling procedure. Structural equation model has also been used for analyzing the data. The results show that there is a meaningful relationship between knowledge management and social security organization staff empowering in Ardabil Province.