in this article, political developments in iran after the islamic revolution has been studied to answer this question we describe and identify the nature of iran's political system and mechanisms of change in these political systems and we try to prove this hypothesis that political developments in iran in this period has been involved changes in government. this changes have affected by c...

“Social Choice: Recent Developments” Walter Bossert and John A. Weymark In the past quarter century, there has been a dramatic shift of focus in social choice theory, with structured sets of alternatives and restricted domains of the sort encountered in economic problems coming to the fore. This article provides an overview of some of the recent contributions to four topics in normative social ...

Almost without exception the nations of the world are committed to programs of social security-programs that vary from country to country but have in common the establishment of protection, generally through compulsory social insurance, against such risks as sickness and the economic consequences of unemployment, disability, old age, and death. The following survey, based largely on a longer re...

it has been encountering with large modifications and developments during recent decades and it makes large developments at rey & islamshahr regions. as the habitation areas as shaped in different dimensions. thought it can investigate the implicational structural at large scales even at littler scales too. nevertheless the essential applications of living areas on over coming life need such ha...