structure and function of socio – economic systems present different spatial effects in different countries of the world. in this study, structure and function of social and economical systems is analyzed to identify of changes within urban spatial structure. in tehran, effects of political and economic factor is analyzed for identification of changes of its spatial structure and its periphery ...

today, online social networks are very popular due to the possibility of creating relationships between people all over the world. these social networks with possibilities such as friend recommendation generally use local features derived from social graph structure. for friend recommendation, there are different algorithms with local and global approaches. in this paper, we proposed an algorit...

the research discussed in this article consists of the process ended to propos a structure for social welfare and security which took more than 11 months in social security research institute. the main topics discussed are as follows: 1- the importance of social security and its relationship to economic growth, social justice, human generosity and national honor. 2- the basis and opportunities ...

The present research identifies and prioritizes the effective organizational structure components using content (theme) analysis and Delphi technique and hierarchical analysis (Case Study of Regional Electric Companies of Iran). The present study is applied  based on purpose and is exploratory-survey based on the nature and method of data collection. The statistical population of this study inc...

Much economic theory, especially the orthodox variety, keeps away from structural methods and makes little or no reference to social structure: the word ‘structure’ is used only rarely and casually, so that its sense remains unclear. This paper argues that economics might gain from a richer, more fluid treatment of social structure, as proposed in recent social theory. After considering the str...