structural equation model

A correlational survey research design was utilized to investigate self-regulated Learning (SRL) and teacher-student interaction factors that had been realized to have contributive roles in EFL learners' academic success. A sample of 218 EFL learners (male = 102 and female = 116) was drawn with the aid of a prior sample size calculator for the structural equation models from 645 students. They were within the age range of 18-45 and were enrolled at Islamic Azad University, Tabriz Branch. The structural equation model (SEM) hypothesis testing procedure revealed that the teacher-student interaction directly and significantly influenced learners' academic accomplishments. Likewise, the obtained results indicate that the impact of the teacher-student interaction on EFL learners' academic achievement is mediated by the effects of SRL. Correspondingly, the obtained results indicate that the theorized model fits the data. The causal contribution of psychological factors, consisting of the teacher-student interaction and SRL, to EFL learners’ academic achievement was validated. The findings of this exploratory research have certain implications for classroom practice which are elaborated in detail in this paper.

Purpose: the aim of this study was to provide a model for sharing knowledge among the faculty members of Islamic Azad University, due to the increasing need for organizations to share the knowledge at all organizational levels. Methodology: In terms of purpose and data type, this is a mixed study. The statistical population in the qualitative section consisted of 23 specialists and experts, and in a small section, 1803 faculty members were selected in the cluster sampling method using Krejcie-Morgan table. A questionnaire was developed to determine the knowledge sharing indices using the previous studies and interviewing with the experts. Findings: Validity of the questionnaire was confirmed through face validity, content and construct, and its reliability was obtained greater than 0.70 for all components, using Cronbach's alpha and the mixed reliability coefficient. Based on the obtained structural equation, the organizational factors (0.89) and individual factors (0.38) explain the variance of knowledge sharing among the faculty members. The value of fitting goodness index is greater than 0.9 and the value of the mean square error estimate was obtained 0.051. Conclusion: For the successful implementation and deployment of knowledge sharing at all levels among the faculty members, the organizational factors must be strongly considered and the probable barriers eliminated; as well as the individual and personality factors to be taken into account.

Purpose- Rural tourism can be considered a country-related experience that includes a wide range of attractions and activities. They can be related to agriculture and might increase opportunities to provide services to local communities. In the same time, they can change the nature of geographical landscapes. Thus, this study aimed to investigate the feasibility of rural tourism development using the structural equation model in Gaikan Village of Aligudarz County. Design/methodology/approach- This is applied study, in terms of purpose, and in terms of method, it is descriptive-analytical. To fulfill the purpose of the study, field study and survey were used. Using Cronbach's alpha test, the reliability for two feasibility components (attractions and capabilities of rural tourism, and obstacles and problems of rural tourism development), were 0.79 and 0.80, respectively, which indicates the good fit of the research tool. The statistical population consisted of three categories of experts, tourists and villagers (270 people in total: 13 experts, 129 tourists and 128 villagers) who were selected by simple random sampling. In order to analyze the data, exploratory factor analysis and structural equation modeling in SPSS20 and AMOS software were used. Findings- The findings showed that the most important attractions and tourism capabilities of Gaikan Village are in four main categories: cultural and religious attractions, use of organic product, rural welfare facilities and services, and natural attractions. Also, the most important restrictions and obstacles of tourism development in this village are: lack of proper investment, avoidance of using agricultural products and related industries, ignorance of local people about the benefits of tourism, lack of amenities, and creating environmental pollution. The last one has a significant relation with tourist development. Research limitations/implications - Lack of proper access to transportation infrastructure, roads, and accommodations in the area of Aligudarz County has created limitations for the development of tourism in the study area. Moreover, access to tourists and key informants of rural issues (statistical population of the study) was one of the problems in the research. Practical implications - Due to the lack of transportation, accommodation, and public infrastructure in Gaikan Village, establishing the accommodations such as hotels as well as camps are suggested in the region. Originality/value- The feasibility of tourism development can lead to understanding the tourism process in accordance with the local systems and finally, designing a suitable local model.

Iran attempts to expand the non-oil exportsfor diminishing the dependency on oil export income. This research tries to examine the export and trade balance of Iran's agricultural sector. Accordingly, the gravity model was used for export, applying panel data from 1997 to 2017. Also, the trade balance of Iran's total agricultural and the related sectors’commodities was examined. It should be noted that for the trade balance, time series data from 1978 to 2018 were used. The results of the gravity model show a negative effect for the variable of distance. The coefficients of Iran’s per capita GDP and also the GDP of trading partners are positive, as expected. It was found that a one percent increase in the per capita GDP of Iran causes a rise of 3.42 percent in the export of agricultural products; however,that of importing countries haslow statistical significance. Based on the coefficient obtained for the population, an increase in the population of the importing countries raises the demand for Iran's agricultural products.The degree of trade openness revealed a positive and significant effect on the export of agricultural products. The coefficient for the real exchange rate was found to be around 0.9 percent. It was also found that the volatility of the exchange rate is related directly to the export of agricultural products. Comprehensive sanctions have a negative and significant effect, while less restricting sanctions have an insignificant effect on the export of agricultural products. The global economic crisis has also had a dampening effect on exports. For trade balance, the results show that the value added of the agriculture has a positive effect on the trade balance of entire agriculture and sectors. The real exchange rate has a negative effect on the trade balance of agricultural commodities as a whole and livestock and agronomy sectors, confirming the J-Curve theory while it was not supported for the horticultural sector. Also, the variable of exchange rate volatility was included in the model using two measures of positive and negative series of exchange rate changes and the Autoregressive Conditional Heteroskedasticity (ARCH) effect, but their effect on the trade balance was not the same in terms of both the direction and statistical significance. The trade openness for the agricultural and horticultural sector was found with a positive coefficient, indicating that their production is based on comparative advantage. However, for the sectors of agronomy and livestock, it illustrated a negative effect. Sanctions have also harmed the trade balance.

Organizational DNA expresses a method of investigation, thinking, reflection and thought about organizations, which examines the patterns of organizations, management practices, leadership style and other concepts related to the organization. Organizational DNA uses very diverse approaches to understand and recognize the organization, instead of organizational models and forms, by examining issues such as teamwork, decision-making, and development and improvement of human resources as separate or at least independent variables. In this research, by using the theoretical framework and using quantitative and qualitative methods, it has been done to identify the dominant DNA in Tocafulad Holding companies and determine the relationship model of hidden components using covariance analysis. The statistical population includes 435 employees of Isfahan Tokafulad companies and 6 company experts who used a mixed or mixed design to conduct the research. The technique of structural equations has been used to improve the model and evaluate the components and indicators to check and identify the model. In order to answer the research question, the steps are: 1) presentation of the conceptual model of the relationship between the corporate DNA and the investigated components, 2) quantitative evaluation of the components and indicators of the model, 3) determining the mutual influence of the hidden variables and the obvious variables of the model and 4) the relationship Between the apparent variables of the components with each other and the verification of the initial conceptual model has been carried out and then the model has been improved and finally the dominant DNA has been determined. The research showed that semantic DNA with a factor load of 0.93 is the dominant DNA in 4 out of 6 companies under investigation. It was also found that planning and payment system are the least important and change processes are the most important in line with the improvement model. In the improved model based on covariance analysis, the mutual effects of payment system and planning with mission, leadership style with teamwork, performance management with decision-making, interpersonal relations with change processes and change processes with work group should be considered.