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been analyzing the development time of the city as well as construction and name of its Citadel by checking reliable historical references and also scrutinizing the related assumptions regarding them.

Primary man in trying to find food went everywhere. But by forming ranching arranged a chain of places and became emigrant. By happening industrial revolution, human life was centralized on one place. Places that base on its advantages make different biologic and behavioral types. Forming cities in seaboard, river shore, boundary of mountains and Champaign cause to make different cultures that shows habitat and continent effects on their inhabitants. This definition of human means native man was removing in industrial revolution because modern life advantages aren't depended on habitat. Loom factories develop in every longitude and latitude and cause to form cities that have sit on beds without native values. In fact dependency on a special place in agriculture ages lost its special value and come off in everywhere. In the other hand, in information and media revolution of globalization life Advantages Sea themselves in communication and virtual space that is quite placeless. In fact if we define habitat as an interacting situation between human and a place, we can survey this concept evolution and change procedure from past to now and study its results and effects on human life space quality. In this study we survey efficacy on and getting effect of habitat by studying cultural and anthropologic evolution and genesis of habitat concept and restudy its relation with human real and virtual residential space.

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?