درخت حوزه‌های تخصصی

Current article is allocated to the report of a research in which the income elasticities of urban families” demand for public education in time period of 2008-2013 were estimated separately according to the income deciles and by applying Rotterdam Demand System, it was clarified that public education is normal commodity. Different size of estimative elasticities indicated that public education is necessary for the families belonged to the sixth and tenth income deciles and it is lux for first to fifth income deciles and it can be expected that if the income of families belonged to the first to fifth deciles faces with reduction, mentioned families for one percent reduction of income will reduce their demand for public education more than one percent and they will consume the related sources for necessary commodities and services. In contrast, the families belonged to the sixth to tenth deciles reduce the share of lux commodities and services in their cost basket so that not to be forced to reduce their public education costs proportional with income reduction. Therefore, the effective policies on families” income should be compiled and executed in a manner that not to cause to reduce the demand of families for education and especially groups with low and medium income.

The how and why of Tehran development and construction of its Citadel has always been of interest to researchers. At the same time, Issues such as its time of obtaining importance and prosperity on the one hand, and establishing and appellation of its Citadel as the most important official complex of the Qajar period on the other, are among the concerns mostly ignored by the scholars. Addressing the above- raised questions, the present study has been analyzing the development time of the city as well as construction and name of its Citadel by checking reliable historical references and also scrutinizing the related assumptions regarding them.

Urban spaces and in other words urban design and architecture have been found with close linkage with art and beauty especially the arts such as painting and sculpture. Addressing beauty at different areas such as creation of galleries to offer works of art, addressing form of urban spaces and representing works of art in urban environment have improved social life and increased identity, consensus and collective solidarity. On the other hand, it can provide an interesting and calm environment for the citizens and residents. Concurrent with the socio-political developments in the twentieth century and the progress of science and technology, all the areas of the arts were subjected to change. The metamorphosis of the art and stylistic developments took place and a large number of artists tended to innovative phenomena. Since the art at the twentieth century especially the second half of the twentieth century sought to affect the addressee, a group of the contemporary artists including sculptors have not known the tight enclosure of museums and galleries to represent their works and preferred to display their works at open space and wide and large places of cities. Representing works at open space requires largeness of dimensions of works at multiple scale and use of modern materials and techniques. Sol Lewitt (1928 - 2007) has been regarded among the artists at contemporary age at the area of Minimalism and Conceptual Art. American philosopher and theorist and contemporary art critic, Arthur Coleman Danto, has conducted articles in criticism to works by Sol Lewitt and has appeared in exhibition of his works. Lewitt made the earliest structures in 1965 and continued his activity at the 1970s by expansion of plans and planning for the larger projects which have been being made based on morphological and conceptual ideas. Ultimately his arrangements were proposed at huge scale and extended from the space of galleries and museums which tended to conceptual and minimalist art to the urban space. In the present research, works of this artist and ideas of Arthur C. Danto about minimalism and works of Sol Lewitt are analyzed. The main questions are as follow: What outcome representation of these works has in natural environment and urban space? how the border between art has removed the daily life and addressee?

Recreation (creativity) is undoubtedly one of the important designing bases and a durable, matchless and unique factor which determines distinction, excellence, and elegance of a building in comparison with other buildings; and architecture as one of the manifestations of human life in a special time and place can be a reflection of thoughts, ideas and living method and also represent identity in shape of thought and creativity which is known as creator of architecture work from viewpoint of architecture. Firstly reflection of architect’s character in architecture work, then cultural concept of the work and its belonging to a specific social and ideological movement and besides talent and creativity of the artist, the cultural and artistic movements affect drastically on the result of architect’s act who is creator of the art work in form of an architecture event. Therefore it can be mentioned that variables of the present research are nominal and qualitative; the dependent variables are also of the same type. The effects of economic, political, social and cultural movements can also be mentioned which are expressed in form of concepts such as tangible and intangible strategies. The present paper attempted to analyze metaphors used in the major building of Behsharh Industrial Group, which is an objective evidence of Nader Ardalan’s work. The analysis was done in a historical-interpretation method and in qualitative form.

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

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.

In today's communities achieving to effectiveness of urban advertising is one of troubles of advertisement industry. This research is trying to answer this question that using three-dimensional design in urban advertising has what place in urban field? This query has been conducted in the method of iconological analysis on chosen urban advertising works of last 15 years in the world with the goal of achieve to volume effect on effectiveness of public advertisement. Results show that reason of effectiveness of chosen urban advertising (billboard) of last 15 years in the world (2000-2015) is -due to public audience of commercial advertisement and services- using volume display in the amount of 86.7% which among this number 83.3% of them have interacted with around environment space.