درخت حوزه‌های تخصصی

on one hand, Iran due to the low annual rainfall and lack of appropriate spatial and temporal distribution in precipitation is considered as an arid and semi-arid country experiencing stress and water scarcity; on the other hand, 90% of annual water consumption has been allocated to agriculture sector in Iran and efficiency and productivity of water consumption do not enjoy favorable status in this sector. While it can overcome this problem by use of virtual water criterion in trade with the countries which enjoy water status such as Turkey. In this regards, the present study has examined this issue in form of selected agriculture goods based on common indices for detection of trade opportunities. Cosine criterion indicated that the degree of similarity and complementary of Turkey’s export with Iran is greater than structural similarity of Iran’s export with Turkey. With regard to trade potential calculations, Iran and Turkey have high export capacity in trade of agriculture goods. Further, Index of Drysdale indicated that the possibility for development of trade from Turkey to Iran is greater than trade from Iran to Turkey and ultimately adjustment of Balasa index based on virtual water trade process indicated that Iran should change its import and export priorities at area of agriculture products. Further, results from research indicate that applying virtual water criterion and removing the products lacking relative advantage in trade between Iran and Turkey result in increase in export of Turkey’s agricultural products to Iran and increase in Iran’s benefit in trade of virtual water.

Today's world has been built on the basis of competition and uncertainty, thus the role of facilitators, such as technology and information technology is undeniable. In this research developed Technology Acceptance Model to identify and prioritizing the factors affecting was used on formation of decision and behavior of customers in adoption of Internet banking of Post Bank. The statistical population consisted of all consumers of Post Bank in Tehran. Total of 400 questionnaires was distributed among community members; ultimately 384 usable questionnaires were coded and were entered into SPSS and LISREL software up to use the analysis of data. Results of factor analysis indicated proper fitting of the model and compliance of extracted factors with designed questions and explained variables in the model of the research. At the inferential statistics level also the results of using single sample T-test and ANOVA Friedman tests often were confirmed research hypotheses. Furthermore were showed the ease of application variable has the most influence on Internet banking adoption and next variables had been in order being applied, the security of private information, being pleasure existence of appropriate hardware and familiarity with Internet banking.

Improving employment opportunities for people and reducing the economic burden on government requires a broad and concentrated effort on private sectors. Private sector growth is a key engine for creation jobs. The major advantage of private sector is its employment potential at low capital cost. These sectors are the nursery of entrepreurship, often driven by individual creativity and innovation. Entrepreneurs seek opportunities and innovations often provide the instrument for them to succeed. However, certain social, cultural and structural factors are inherent within a society which can affect entrepreurial activity. The purpose of present paper is exploring a set of positive and negative factors which can result in either stimulating or damping the activity of entrepreneurs in Iran. The statistical population includes successful entrepreneurs of Iran’s provinces in 2014 that were selected as sample randomly. The result shows that success achieved by the entrepreneurs is positively correlated with their risk taking abilities. The overall conclusion clears that the family and government support influence

Historical fabric of Arak, as one of the most important inorganic cities in urbanization history of Iran, has been implemented from the beginning based on predetermined plan and project. During the age that majority of cities in Iran used to be created organically and gradually based on public needs, all steps of construction of Arak City including spatial organization, physical structure, communicative network system, activity distribution pattern and composition of urban elements were firstly designed and then implemented. The main objective of this study is to identify and analyze the physical features of monuments of Arak city to discover the behavioral system of monuments with the composition features standard. According to the research objective, the method applied is descriptive, analytical and comparative method based on field and library investigations. In this study, first architectural composition features including scale, proportion, hierarchy, axis, focus point, composition center, modulus, flexibility, rhythm and geometry are analyzed in each monument. Then, the monuments were classified in sub-factors of each composition feature and then, through comparing the classified groups, common features of monuments in each sub-factor with most frequency are extracted. The results obtained from the study showed existence of unit behavioral system in special groups of monuments compared to architectural composition features leading to typology of Arak’s historical monuments.

Security as one of the basic human needs has a special place in relaxation, comfort and spiritual needs provision. For this reason, security is always of managers, planners, architects and urban designers' interest. Solutions and strategies of security provision have been fundamentally changed following prevailing change of housing architecture patterns from homes to residential complexes and high-rise buildings. Principles, concepts and patterns of residential complexes form are also more originated from its resources and ideas shaping namely Western culture rather than Iranian-Islamic foundations. Individual and social security is emphasized as one of effective aspects in housing design and residential complexes in Islam. The present study was done aimed to explain a conceptual framework for Iranian-Islamic design of residential complexes. The method is a qualitative type and using documents and Islamic texts and also a few examples of residential complexes and validation by experts. The results of the study show that two main principles are dignity and privacy and subsidiary principles are contentment, clarity, nature, evolution from diversity to unity, classification and spatial hierarchy and proximity of the main structure of conceptual framework of individual and social security in residential complexes.

Biology has been a brilliant teacher and a precious textbook to man-made construction for thousands of years, because it allows one to learn and be inspired by nature’s remarkable and efficient structural systems. Concepts unfortunately have this in common that in general use often specifies incorrectly some phenomena. There was a turning point in each period of time which human has discovered a new sight about the world and nature order in a way, and then has presented this relation by numeral, artful and industrial language. The relation between nature and human considers different periods. At first it was bio-utilization which degrades the value of nature as a source of energy and material. After revolution in science development and attention to the damages which they made to environment, they tried to change their look to this issue and expand the mean of relation between human and nature. Birth of such word like bio architecture emphasize on the new point of view at nature. The role of nature and importance of natural resources in human’s social-economic (and even his psychological) life is undeniable, and also it is essential to note that God is the Creator and man the explorer. This paper aims to call a close multidisciplinary collaboration that promotes engineers to build more sustainable and smart structural systems for bridges in the 21st century. In this article survey the introduction of bionic architecture and related categories.

Quality of urban areas and improvement of it have always been considered as one of the main issues in the process of urbanization. It might be possible to consider this importance as the result of fundamental changes in intellectual patterns during the past two decades in one side and its proposal in all aspects of human life on the other side though this is one of the main influential concepts in urban landscape and vision, and there are various approaches available regarding this matter. These approaches have decreased the nature of landscape concept to simple decorating concept and even considering it equal to any type of interaction between human and environment and it identification. So there are several results for each definition in terms of planning and management. Urban landscape &ndash as the objective of city &ndash is the most impressive urban index for human beings. The issue of lack of attention to city vision and landscape, and efforts in identifying and creating of it, is one of the most important problems of cities. Increase in Population as a threat to city life, migration of rural population to urban areas and large cities, traffic, air pollution, open space, green space and playgrounds and several other issues, are among the items that have been discussed relatively more than issue of urban landscape and its problems and more papers and books have been written on it. Urban landscape is in fact all the elements that can be seen in the city and can be watched by human eyes. These items form urban landscape when they are integrated and combined with several factors in every moment. This article seeks to enhance the environmental quality to organize urban landscape in Sa&rsquodi Street through discovery of historical meanings, cultural codes and local architectural terms in visual landscape of the city, and giving sense to it in physical and visual formats. Therefor with review of Store street in New York &ndash as an foreign sample - and Hamze street in Isfahan &ndash as a domestic sample &ndash the existing situation of Sa&rsquodi street is reviewed and SWOT analysis is then implemented for examining the weaknesses and strength factors and regulating the urban landscape of this street through field-documentary studies.