Abstract Using administrative German data, we show that large cities allow for a more efficient matching between workers and firms this has important consequences geographical inequality. Specifically, the match high-quality plants is significantly tighter in relative to small cities. Wages are higher not only because of worker quality but also stronger assortative matching. Strong magnifies wa...

the present article studies the appearnace of iranian authors in sci database for the 1993-1997 period. it tries to present an actual picture of scientific activities in iran and the world. for this purpose, scientific information of iranian origin in form of articles dealing with basic sciences, were extracted. irans position has been compared with the rest of the world. it was found that 0.1 ...

Circular development could produce more resource efficient, ecologically regenerative and resilient cities. This pathway offers many ecological, social economic benefits. However, there are also challenges to implementation, not least a heavy reliance on the market transform urban systems of provision. A regulatory policy framework is essential for circular transformation, until activities beco...

dezful a city at the far north of khuzestan on the southwest of the great iran is considered as an agriculture pole. this city as one of the iranian ancient cities was under hostile attacks of the iraqi ba’athist enemy throughout the holy defense era from 1980 to 1988 and during the five stages of the war of cities, in particular. so, in most of the enemy aerial and ground attacks against 127 i...

"Using published census data, metropolitan area population and employment statistics are constructed for several large Latin American cities in 1950, 1960, and 1970, and compared to similar statistics from selected North American cities. The Latin cities are experiencing decentralization of population and some decentralization of employment. Overall population density patterns of large Latin ci...

a reconsideration of the standpoints adopted by the islamic victory of the islamic revolution will be an attempt to evaluate our present situation and to gain a more profound view toward future standpoits. first, the manner of irans' treatment with the united front of the west is considered. the political standpoits adopted on the basis of islamic views play the crucial role which explain ...

BACKGROUND Creating healthy cities promotes socio-economic development, thus, the creation of such cities has been receiving more attention from the Chinese government and the Chinese people. In the current study, the intention was to conduct a comprehensive evaluation of the creation of healthy cities in Henan province in central China. METHODS We randomly selected 18 cities (7 healthy citie...