درخت حوزه‌های تخصصی

Purpose: The purpose of this study was to determine the impact of leadership style on innovation according to the mediating role of commitment and organizational climate. Methodology: The research method was applied in terms of purpose and descriptive-survey in terms of data collection method. The statistical population of the study consisted of all employees of the Tax Administration of Iran. Using Cochran formula and stepwise cluster random sampling, 752 individuals were considered as the sample size. Data were collected using standardized and transformational leadership questionnaires by Bass & Avilio (2000); organizational commitment by Meyer & Allen (1997); Holpin & Croft (2000); After collecting the questionnaires, the data were analyzed by mean, standard deviation, percent, frequency and table using SPSS software and statistical inference was made by structural equation modeling using lisrel software. Path coefficients and software significant coefficients were used to investigate the research hypotheses. Findings: The results showed that the degree of fit of the proposed model was appropriate according to the research components; transformational leadership on innovation with mediator role of organizational commitment was 0.90, transformational leadership on innovation with mediator role of organizational commitment. 0.82, pragmatic leadership influenced innovation with mediator role of organizational commitment 0.99, also pragmatic leadership influenced innovation with mediator role 0.71. Conclusion: Managers can increase employees' organizational commitment by adopting transformational leadership style or a combination of transformational and pragmatic leadership style rather than pragmatic style.

Basically, relationship of the interior and exterior spaces of architecture, also, the relationship is always an indication of the architecture type. Corbusier believed that all historical background of the architecture just focus on osmium of the wall. Size of the opened space is an indication of its correlation with the adjacent environment; namely, entrance is a combination of differently structured spaces rather than just an opening and “Porch” is one of the mentioned elements of the Iranian architecture. It is multifunctional; the porch separates the entrance from the corridor and the courtyard; it is an independent space including stone benches for seating and social interactions. This paper is defining the porch, to know why and how the independent element is developed in Iranian residential architecture. The porch is analyzed for its function and form; some concepts are discussed in the process of porch development including: privacy, climate, joint and so forth.

Purpose - Rural production cooperatives (RPCs) play an important role in sustainable development in rural areas by considering three principles: domination, possession, and agency in the agriculture sector. The purposes of this study are to measure the stability of RPCs and presenting effective strategies to achieve it from the managers’ view point. Design/methodology/approach - The present study is a mixed-research method using analytic-descriptive method, including two different questionnaires. One questionnaire aiming at prioritizing and measuring the stability of the RPCs was prepared and presented to the members of RPCs. Stability was measured with 24 indices in three economic, social, and environmental dimensions using Shannon Entropy technique, according which the cooperatives were prioritized. The other questionnaire was prepared to present the best approach to achieve sustainable development from the view point of the managing directors and the board of directors. The best strategy was adopted using SWOT and ANP analysis. Findings - Regarding the sustainable development, the findings of the study indicated that among rural production cooperatives in Isfahan, 12 cooperatives were unstable, 8 cooperatives were semi-stable, and 8 cooperatives were stable; this type of farming system is semi-stable. Developmental strategy (SO) was adopted as the best strategy to achieve sustainability, and the focus was on endogenous development through reinforcing internal strengths to obtain external opportunities. It includes promoting self-reliance through increasing members’ participation in cooperative, empowering the staff and members (i.e. the experienced managing director and the staff with required specialty and expert holding promotional classes), using multilevel, multi-sectorial, multi-cluster, collaborative, and holistic approaches to manage the RPCs, and promoting systems based on collaborative team work. Practical Implications - In rural sustainable development planning, sustainable farming systems must be considered as the focal core of any development plan. Since a big part of farming system in rural areas is devoted to smallholdings, promoting cooperation culture by the rural development planners can prepare the ground for empowering the villagers to obtain sustainable development. Originally/value: For the first time in Iran, the current research attempted to present functional strategies for RPCs development using a mixed-method design.