During the past few years, Tehran Stock Exchange (TSE) has been changed into one of the most popular places to invest and index has been quadrupled in fewer than three years. As a result, many people have been attracted to invest on TSE market. This paper presents an empirical investigation to study the effects of investors’ personal characteristics including financial management skills, wealth and financial intelligence on investors’ risk tolerance among 384 randomly chosen investors who were active on TSE market in city of Esfahan, Iran. Using structural equation modeling, the study has determined that financial management skills, wealth and financial intelligence influence positively on investors’ risk tolerance.

This paper studies the impacts of different factors influencing on perceived organization change in municipality organization in city of Tehran, Iran. The proposed study uses two questionnaires, one for measuring the effects of five factors including partnership, communication, training, believe in change and organization commitment and the other for organizational change in Likert scale. The study has been implemented among 147 regular employees of municipality organization in city of Tehran, Iran. Using simple regression analysis, the study has detected that all mentioned factors influence organizational change, positively. In addition, Freedman test indicates that partnership maintains the highest impact followed by believe in change, communication, organizational commitment and training.

This paper studies the impacts of four components of organizational culture on brand promise in one of Iranian producer of detergent and sanitary products. The proposed study uses two questionnaires, one for measuring the effects of organizational culture and the other for brand promise in Likert scale. Cronbach alphas for organizational culture and brand promise are calculated as 0.83 and 0.91, respectively. The study has been implemented among 211 regular customers of producer of detergent and sanitary products. Using Spearman correlation ratio as well as stepwise regression analysis, the study has detected that three components of organizational culture including tribal culture, entrepreneurial culture, and market culture influence positively on brand promise and bureaucratic culture influences negatively on brand promise.

This paper studies the relationship between dividend changes and future profitability of listed companies in Tehran Stock Exchange. Using the information of 191 companies, the study has implemented some regression techniques. The results of the research model analysis indicate that the changes in dividend contain significant and important information content, for the future profitability and dividend changes, and have an important and positive impact on the future profitability of the company. The results also show that changes in dividend can improve the company & apos; s future performances and messages to recovery the activities and future performance of the company. However, the results have shown the greatest impact on the performance of the dividend changes, for a year after considered year and not for two years after. In other words, the information content of dividend changes are more about the performance of the next year and the information provided is lower in the next two years.

The increase in the number of universities for the last decade in Iran increases the need for higher education institutions to manage their enrollment, more effectively. The purpose of this study is to design a model to improve the first year university student adjustment by examining the effects of academic self-efficacy, academic motivation, satisfaction, high school GPA and demographic variables on student’s adjustment to university. The study selects a sample of 357 students out of 4585 bachelor first year student who were enrolled in different programs. Three questionnaires were used for collection of data for this study, namely academic self-efficacy, academic motivation and student satisfaction with university. Structural equation modeling was employed using AMOS version7.16 to test the adequacy of the hypothesized model. Inclusion of additional relationship in the initial model improved the goodness indices considerably. The results suggest that academic self-efficacy were related positively to adjustment, both directly (B=0.35) and indirectly through student satisfaction (B=0.14) and academic motivation (B=0.9). The results indicate a need to develop programs that effectively promote the self-efficacy of first year student of student to increase college adjustment and consequently retention rate.

This paper examines the relationship between quality of life and mental health among regular employee who work for Esfahan Steel Company, Iran. The study uses two questionnaires, one for measuring quality of life, which is adopted from Goldberg and Williams (2000) [Goldberg, D., & Williams, P. (2000). General health questionnaire (GHQ). Swindon, Wiltshire, UK: NFER Nelson.]. In addition, the study uses another questionnaire, which is adopted from Juniper et al. (1994) [Juniper, E. F., Guyatt, G. H., Willan, A., & Griffith, L. E. (1994). Determining a minimal important change in a disease-specific quality of life questionnaire. Journal of clinical epidemiology, 47(1), 81-87.]. Using Pearson correlation ratio as well as stepwise regression technique, the study has determined a positive and meaningful relationship between quality of life and mental health care.

This study was aimed at highly stereoselective ring-opening of epoxides with acetic anhydride in the presence of molecular sieves 4Å as an efficient reagent. Yields of the 1,2-diacetates are uniformly good to excellent and the reagent may be recycled without the requirement for purification. High yields, short reaction times, ease of preparation and simple work-up procedure (filtration) are advantages of this method.

A new and simple synthetic methodology for the preparation of 3-arylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-diones and 3-aryl-5-oxo-7-thioxo-7,8-dihydropyrimido[4,5-c]pyridazin-5(6H)-ones by a one-pot three component reaction of barbituric acid or thiobarbituric acid with arylglyoxals in the presence of catalytic amount of ZrOCl2∙8H2O as green Lewis acid and hydrazine hydrate at ambient temperature in water was reported. All of these pyrimidopyridazines derivatives have one clustered water molecule in their molecular structure. The use of ZrOCl2∙8H2O catalyst is feasible because of its easy availability, convenient handling, high stability, simple recovery, reusability, good activity and eco-friendly.

Indium (III) chloride (InCl3) and metaphosphoric acid ((HPO3)n) were found to be efficient and recyclable catalysts for the synthesis of 1,8-dioxooctahydroxanthene derivatives as biologically important molecules in high turnover numbers and rates. Several substituted xanthenes can be prepared in high yield and purity by direct reaction of cyclic B-diketones and aldehyde derivatives in the presence of a catalytic amount of InCl3 and (HPO3)n as Lewis acids and at ambient temperature under solvent-free conditions. This newly reported procedure profit some advantages such as short reaction times, high yields of products, cheap, easy to use, facile practical conditions, and wholesome with green chemistry without using harmful solvents.

When a structure is influenced by the earthquake external force, some energy imposed to the structure is dissipated and remained energy causes structure displacements. Dissipated energy in the structure depends on the type of structure and its optimal engineering design. In any typical structure, the type of connections, stiffness of structure, dampers, place of windfall and damper and other factors play significant role in the amount of dissipated energy. This article introduces a new resilience factor which is a function of energy dissipation factors of input seismic energy. Mathematical equations are presented for this factor and its limits are determined for different periods. The applicability of the proposed factor is also investigated for two typical structural examples.