The subject of initial public offering (IPO) and the unusual short-time return of compared with another stocks, allocated many studies and researches in world level and in stock market to itself. The studied researches pointed to the short-time return of IPOs, which are higher than market and its long term return in return. One of the main hypothesis of behavioral finance is overreaction that is the main factor of overreaction in investor behavior is representativeness heuristic. This paper investigates overreaction behavior on shares of IPOs in Tehran stock exchange by considering 2 strategies of buy and hold and cumulative average return. The study investigates the effects of different factors such as price, market value, prior return and trading volume on overreaction. The results show negative effects of price and transaction volume on overreaction. In another words, price and volume of transactions are lower (higher) and higher return (lower) and therefore increased overreaction.

This study aims to identify and to classify Open book accounting (OBA) dimensions according to inter-organizational cost management (IOCM) in petrochemical companies listed in Tehran Stock Exchange. In this research, there are 18 statistical society financial and accounting experts listed in Tehran Stock Exchange. By studying the theoretical literature and conducted investigations inside and outside of the country and also the experts’ comments, the OBA dimensions were identified and then classified by analytical hierarchy process technique. According to the studies and experts’ ideas, four dimensions including nature of data and accounting data disclosure practices, uses of disclosed accounting data, conditions of OBA, cost implementation of OBA were identified as OBA dimensions. The results of examinations were shown that, considering the comments on dimensions of nature of data and accounting data disclosure practices, the form of data disclosure plays a more important role. In uses of disclosed accounting data dimension, coordination and planning among team members play the most important role. According to conditions of OBA dimension, trust is the most important one and in cost implementation of OBA dimension, the cost of the other party plays the most important role.

This study was conducted to evaluate the effect of organizational culture on knowledge management implementation. The proposed study designed a questionnaire and distributed it among individuals 370 managers and employees of GOLDIRAN, an official agent of Korean firm named LG in Iran. The results of this study show that there were positive and meaningful relationships among 4 variables including adaptability, involvement, mission, stability in this firm. Based on the organizational cultures to component development, Stability) maintains the highest average (3.5984), and involvement maintains the lowest average (3.3871).

This paper presents an investigation on the effects of various components of emotional intelligence including self-awareness, emotional management, sympathy, social skills and self- motivation on building brand equity in telecommunication industry. The proposed study of this paper uses two questionnaires, one for measuring emotional intelligence and the other for measuring brand equity. The study was performed among 384 people who had used telecommunication industry services in city of Tehran, Iran. Using Spearman correlation test, as well as structural equation modeling, the study has confirmed the positive effects of four emotional components, including self-awareness, emotional management, social skills and self-motivation influence on building brand equity in telecommunication industry.

The aim of this paper is to review the effect of corporate diversification on information asymmetry and firm performance. To test the research hypothesis, a sample of 47 companies listed in Tehran Stock Exchange over the period 2008-2012 based on panel method was taken. In these models, the presence or absence of effects models (fixed or random) is reviewed and finally the best model is estimated. The results indicate that corporate diversification using entropy influenced on information asymmetry and firm performance. With controlling other variables, the results indicate when ENTROP increases one unit, STDRET increases 0.49 unit but with controlling other variables, the results indicate when ENTROP increases or decreases one unit, ROA does not change.

This paper presents an empirical investigation to detect whether knowledge management (KM) promotes learning organization (LO) or vice versa. The proposed study tries to find out the positive influences of KM components including knowledge acquisition, sharing, and utilization with different LOs dimensions. The study was performed among managers and members of societies of software and computer engineering field in city of Tehran, Iran. One time knowledge management processes were seen as independent variable and another time considered as dependent variables. Pearson correlation and regression analysis were used to test the hypothesis. The results show that KM promotes OLs more than OLs promotes KM.

Significance of identifying human resource competency in organizations and the necessity for valuating human resource in accounting persuade many researchers to design a conceptual model for measuring human resource accounting. This study, first, examines dimensions of various valuation models of human resource and then they are compared with Goleman individual and social competency indicators. Next, individual, organizational and social competency indicators are designed through developing Goleman model. Finally, Analytical Hierarchy Process (AHP) and experts’ ideas in human resource accounting in superior universities of the world are used to classify the indicators; and the conceptual model of measuring human resource accounting is designed based on guidelines of management and human capital development vice-presidency and inspiring effort rate of return method.

This paper presents an empirical investigation on how to document some experiments on special and governmental guidance schools managers of Abadan province in Iran. Statistical society of this research includes all education managers and teachers in governmental and nongovernmental guidance schools of Abadan province located in southern part of Iran. The study selects 222 teachers and managers, randomly, and using some questionnaires, we try to find important items to document. The questionnaire covers 6 main groups including students, teachers, school manager, connection with parents, connection with society, education planning. The study finds out whether there was any difference between teachers’ educational background and six groups of people. However, the investigation does not find any difference between teachers’ educational background and six groups of studies.

During the past few years, there have been growing interests in business development of herbal supplements in many developing countries especially in Iran. Herbal supplements are used to cure many deceases such as medicating anxiety, acne, weight loss, depression, etc. In this paper, we present an empirical investigation to detect important factors influencing exporting herbal supplements. The proposed study designs a questionnaire consists of 31 questions, distributes it among 210 experts who are professional in the area of production and distribution of herbal supplements and using factor analysis, the study detects eight factors including supportive laws and regulations, organizational atmosphere, marketing structure, knowledge oriented, feasibility study, research and development, competitive strategy and partnership strategies.

This paper presents an implementation of system dynamics model to determine appropriate product mix by considering various factors such as labor, materials, overhead, etc. for an Iranian producer of cosmetic and sanitary products. The proposed model of this paper considers three hypotheses including the relationship between product mix and profitability, optimum production capacity and having minimum amount of storage to take advantage of low cost production. The implementation of system dynamics on VENSIM software package has confirmed all three hypotheses of the survey and suggested that in order to reach better mix product, it is necessary to reach optimum production planning, take advantage of all available production capacities and use inventory management techniques.