منابع مشابه
Does distance matter? Tuition fees and enrollment of first-year students at German public universities⇤
We use the recent introduction of tuition fees at public universities in seven of the sixteen German states to identify the effects of tuition fees on university enrollment of first-year students at German public universities. Our study differs from previous research in two important ways. Firstly, we take into account the location of universities and include a spatial variable, which measures ...
متن کاملAutumn spring.
artists; signatures and monograms, an international directory. Castagno, John. Scarecrow Pr., ©2007 567 p. $225.00 Castagno, a multimedia artist and sculptor and author of other books in the Artists’ Signatures and Monograms series, presents a reference for identifying, authenticating, and verifying signatures and works of wellknown and little-known abstract artists. About 2,300 painters, print...
متن کاملWhy red-dominated autumn leaves in America and yellow-dominated autumn leaves in Northern Europe?
متن کامل
Changes in autumn senescence in northern hemisphere deciduous trees: a meta-analysis of autumn phenology studies.
BACKGROUND AND AIMS Many individual studies have shown that the timing of leaf senescence in boreal and temperate deciduous forests in the northern hemisphere is influenced by rising temperatures, but there is limited consensus on the magnitude, direction and spatial extent of this relationship. METHODS A meta-analysis was conducted of published studies from the peer-reviewed literature that ...
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ژورنال
عنوان ژورنال: Journal of JSEE
سال: 2012
ISSN: 1341-2167,1881-0764
DOI: 10.4307/jsee.60.2_2