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In the present study we try to examine the exchange rate changes and financial flexibility as the economic stable indexes on the financial leverage use in the companies so the main issue in this study is to define the financial leverage relation with exchange rate changes and financial flexibility. That is why 88 companies of the companies listed in Tehran stock exchange in 2005–2011. The study type is descriptive–correlative and the multivariable linear regression was used to analyze the data. The findings from the hypotheses test state there is a significant relation between financial leverage and financial flexibility while there isn't relationbetween financial leverage and exchange rate changes.

In present study by virtue of the importance of  the fiscal statement contents and illiquid items ignored by the merchant the depreciation contents relation with abnormal return of the shares and future benefits are examined in order to influence the items under consideration of the investors to take related decisions; 94 companies were selected from the accessible universe in five years (2006-2010) to have the data necessary for the study in order to achieve the goal & with the base of keeping attention to the manufacturing & nonmanufacturing companies in the whole industries of stock market except banks & insurance companies. The simple and multivariable regression statistical techniques Chow and Hausman Test were used to test the hypotheses. The significant test was conducted for the paradigms by using the ‘F’ and ‘T’ statistics. The study findings show local high inflation have affection on the both variable results & makes no relation for first variable,for future benefits shows parallel  movements.

Theories associated with job satisfaction are based on the principle that all environmental elements could shape entire career satisfaction.  In literature, major studies illustrate that positive and negative emotions are largely associated with job satisfaction. Job satisfaction source is not only job position but also other factors such as the physical and social work environment, relationships with supervisors and colleagues, group culture and management style of the managers.  In this study, it is aimed to evaluate and prioritize the five dimensions of job satisfaction in Zanjan Refah Bank employees: (i) the nature of the job (ii) supervisor, (iii) peer, (iv) promotion and (v) payment. In this study a field research was applied with a survey study. To testify the hypothesis, the Pearson parametric and Friedman test was conducted. The major findings of this study are (i) there is a negative correlation exists between level of education and nature of the job  (ii) job promotion and payment, (iii) there is not any significant differences in job satisfaction between men and women.

This paper considers the problem of finding the shortest path in a static network, where the costs are constant. The CE Algorithm based strategy that is presented by Rubinstein to solving rare event and combinatorial optimization problem is modified to finding shortest path in this research. To analyze the efficiency of the used algorithm three sets of small, medium and large sized problems that generated randomly are solved. The results on the set of problems show that the modified algorithm produces good solutions and time saving in computation of large-scale network.