全文获取类型
收费全文 | 680篇 |
免费 | 36篇 |
出版年
2022年 | 4篇 |
2021年 | 9篇 |
2020年 | 8篇 |
2019年 | 22篇 |
2018年 | 26篇 |
2017年 | 35篇 |
2016年 | 29篇 |
2015年 | 36篇 |
2014年 | 20篇 |
2013年 | 161篇 |
2012年 | 20篇 |
2011年 | 23篇 |
2010年 | 13篇 |
2009年 | 19篇 |
2008年 | 15篇 |
2007年 | 8篇 |
2006年 | 6篇 |
2005年 | 9篇 |
2004年 | 9篇 |
2003年 | 11篇 |
2002年 | 8篇 |
2001年 | 10篇 |
2000年 | 12篇 |
1999年 | 8篇 |
1997年 | 8篇 |
1996年 | 9篇 |
1995年 | 10篇 |
1993年 | 10篇 |
1992年 | 7篇 |
1991年 | 6篇 |
1990年 | 6篇 |
1989年 | 4篇 |
1987年 | 4篇 |
1986年 | 5篇 |
1982年 | 7篇 |
1977年 | 11篇 |
1976年 | 8篇 |
1975年 | 7篇 |
1972年 | 5篇 |
1971年 | 6篇 |
1969年 | 5篇 |
1967年 | 4篇 |
1966年 | 4篇 |
1965年 | 3篇 |
1964年 | 3篇 |
1962年 | 3篇 |
1961年 | 3篇 |
1960年 | 3篇 |
1959年 | 4篇 |
1950年 | 3篇 |
排序方式: 共有716条查询结果,搜索用时 15 毫秒
11.
ABSTRACT. Traditional models of regional diversification do not capture the trade-off between stability and living standards. In this paper, we characterize regions as open activity models subjected to both productivity and price shocks. We then partially rank small diversification policies by the direction in which they point away from the current industrial structure in mean-variance space. Some general patterns emerge. In particular, diversification for regional self-sufficiency and away from regional comparative advantage may be undesirable. 相似文献
12.
The purpose of this paper, prepared as a background document for the UNRISD/University of the West Indies conference on Economic Crisis and Third World Countries, is to provide a framework for consideration of societal changes accompanying economic recession and restructuring in Africa, Latin America and the Caribbean over the past decade. It is the central argument of the paper that adaptation to crisis should not be considered a temporary phenomenon, interrupting a single, lineal process of modernization which can be expected to resume its course once current difficulties are overcome. On the contrary, both crisis and adjustment have profoundly modified the structure of incentives within which individuals and households must attempt to ensure their livelihood, encouraging new patterns of behaviour with long-term implications for the nature of the economy, society and political practice. After a brief review of the macroeconomic background of crisis in each region, this central hypothesis is explored through a very preliminary analysis of the changing life chances of various kinds of upper, middle and lower income groups — emphasizing not only the costs but also the opportunities which have been associated with economic restructuring. Some individual and collective reactions to change are then considered, before raising a series of questions concerning the implications of crisis and adjustment for the state and civil society. 相似文献
13.
14.
15.
Terri‐Leigh Aldred Charis Alderfer‐Mumma Sarah de Leeuw May Farrales Margo Greenwood Dawn Hoogeveen Ryan OToole Margot W. Parkes Vanessa Sloan Morgan 《The Canadian geographer》2021,65(1):82-96
Rural, remote, northern, and Indigenous communities on Turtle Island are routinely—as Cree Elder Willie Ermine says—pathologized. Social science and health scholarship, including scholarship by geographers, often constructs Indigenous human and physical geographies as unhealthy, diseased, vulnerable, and undergoing extraction. These constructions are not inaccurate: peoples and places beyond urban metropoles on Turtle Island live with higher burdens of poor health; Indigenous peoples face systemic violence and racism in colonial landscapes; rural, remote, northern, and Indigenous geographies are sites of industrial incursions; and many rural and remote geographies remain challenging for diverse Indigenous peoples. What, however, are the consequences of imagining and constructing people and places as “sick”? Constructions of “sick” geographies fulfill and extend settler (often European white) colonial narratives about othered geographies. Rural, remote, northern, and Indigenous geographies are discursively “mined” for narratives of sickness. This mining upholds a sense of health and wellness in southern, urban, Euro‐white‐settler imaginations. Drawing from multi‐year, relationship‐based, cross‐disciplinary qualitative community‐informed experiences, and anchored in feminist, anti‐colonial, and anti‐racist methodologies that guided creative and humanities‐informed stories, this paper concludes with different stories. It unsettles settler‐colonial powers reliant on constructing narratives about sickness in others and consequently reframes conversations about Indigenous well‐being and the environment. 相似文献
16.
F. Albarde J. Blichert‐Toft F. de Callataÿ G. Davis P. Debernardi L. Gentelli H. Gitler F. Kemmers S. Klein C. Malod‐Dognin J. Milot P. Tlouk M. Vaxevanopoulos K. Westner 《Archaeometry》2021,63(1):142-155
The reasons why the Western Mediterranean, especially Carthage and Rome, resisted monetization relative to the Eastern Mediterranean are still unclear. We address this question by combining lead (Pb) and silver (Ag) isotope abundances in silver coinage from the Aegean, Magna Graecia, Carthage and Roman Republic. The clear relationships observed between 109Ag/107Ag and 208Pb/206Pb reflect the mixing of silver ores or silver objects with Pb metal used for cupellation. The combined analysis of Ag and Pb isotopes reveals important information about the technology of smelting. The Greek world extracted Ag and Pb from associated ores, whereas, on the Iberian Peninsula, Carthaginians and Republican‐era Romans applied Phoenician cupellation techniques and added exotic Pb to Pb‐poor Ag ores. Massive Ag recupellation is observed in Rome during the Second Punic War. After defeating the Carthaginians and the Macedonians in the late second century bce , the Romans brought together the efficient, millennium‐old techniques of silver extraction of the Phoenicians, who considered this metal a simple commodity, with the monetization of the economy introduced by the Greeks. 相似文献
17.
García-Heras Manuel Agua Fernando Madiquida Hilario Fernández Víctor M. de Torres Jorge Villegas María-Ángeles Ruiz-Gálvez Marisa 《African Archaeological Review》2021,38(2):297-318
African Archaeological Review - A set of beads made of glass, gastropod mollusk shell, and fishbone from a Swahili occupation level on Ibo Island (northern Mozambique) is dated to the eleventh and... 相似文献
18.
19.
20.
A pair of mandibular rami from a brown bear (Ursus arctosL.) was found at the rock shelter of the Grande-Rivoire in the Castelnovian level. Both exhibit a peculiar deformation affecting the bone between the first and second molars and the roots of these teeth.The perfect symmetry of this deformation, the absence of pathological features, and the misplacement of the teeth suggest that a thong had been placed around the mandible while the animal was young; the mandible then grew around the thong.The interest of this find is that it both demonstrates the taming of a bear and the complexity of the relationships between humans and animals during the late Mesolithic. 相似文献