a lot of people think that the economic development of a country is associated with its grossdomestic product (gdp), but gdp does not consider aspects as important as the environmental performanceof a country. nowadays, environmental issues are one of the most important aspects of the long termdevelopment of a country and play an important role in a nation’s wealth. although the analysis of cou...

research centers are among the most important institutes in a scientific society. using the altavista search engine and webometric methods, this research tries to find the performance and impact of the top research centers of the islamic world countries. the results reveal that from 57 countries, 40 of them did not have any research centers scored in webometric ranking and the rest of them had ...

background: this study made an attempt to make the quantitative and qualitative evaluation of hematological research output in five islamic countries iran, turkey, malaysia, saudi arabia and egypt which have the most scientific productions from 1996-2013. materials and methods: the current study was carried out during the 1st to 31st of september, 2014 in blood transfusion research center, shir...

Abstract The role of transportation in the economic process is central. Transportation’s benefits, however, can be dampened because its environmental and social cost. A central question then arises as to degre sustainability a national system. In present paper we develop mathematical model define assess sustainability. relies on number indicators encompassing impact, efficiency, safety, contrib...