首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   4586篇
  免费   211篇
  2023年   29篇
  2020年   64篇
  2019年   118篇
  2018年   144篇
  2017年   200篇
  2016年   174篇
  2015年   121篇
  2014年   115篇
  2013年   1555篇
  2012年   103篇
  2011年   103篇
  2010年   138篇
  2009年   124篇
  2008年   101篇
  2007年   81篇
  2006年   76篇
  2005年   60篇
  2004年   78篇
  2003年   80篇
  2002年   80篇
  2001年   63篇
  2000年   58篇
  1999年   52篇
  1998年   50篇
  1997年   54篇
  1996年   28篇
  1995年   34篇
  1994年   35篇
  1993年   44篇
  1992年   38篇
  1991年   42篇
  1990年   30篇
  1989年   24篇
  1988年   36篇
  1987年   33篇
  1986年   29篇
  1985年   47篇
  1984年   42篇
  1983年   48篇
  1982年   39篇
  1981年   43篇
  1980年   41篇
  1979年   39篇
  1978年   40篇
  1977年   40篇
  1976年   50篇
  1975年   27篇
  1974年   25篇
  1973年   20篇
  1971年   15篇
排序方式: 共有4797条查询结果,搜索用时 46 毫秒
51.
52.
Manufacturing profitability and growth declined sharply in Canada between 1955 and 1984. The spatial extent of this decline has not previously been documented. This article examines manufacturing performance in six regions of Canada. The analysis reveals significant interregional performance differences that appear to be increasing. Two different types of inter-firm competition are identified in the article: competition in production and competition in the market. Empirical investigation reveals that changes in production conditions had a greater impact on regional profitability in five of the six regions studied. In the remaining region, poor market performance was the primary cause of the reduction in profits after 1955.
Au Canada la rentabilité et la croissance industrielle ont profondément diminué entre les années 1955 et 1984. L'ampleur spatiale de cette baisse n'a jamais été docu-mentée. Cette étude examine le comportement et les performances de fabrication dans six régions canadien-nes. De considérables différences inter-régionales, qui semblent toujours s'accentuer sont mises en évidence. Dans cette recherche, deux genres de concurrence entre les societes son identifiés: la concurrence dans la production, et la concurrence dans le marché. L'analyse empi-rique montre que certains changements dans les conditions de production ont eu un effet considérable sur la rentabilité régionale pour cinq des six régions en question. En ce qui concerne la dernière région, la baisse des profits a partir de 1955 est dûe essentiellement à la mauvaise performance du marché.  相似文献   
53.
Book reviews     
Australian politics

Cora Vellekoop Baldock, Volunteers in Welfare (Sydney: Allen & Unwin, 1990) pp.xii + 171. $19.95 ISBN 0 04 442213 X.

Hugh V. Emy and Andrew Linklater (eds.), New Horizons in Politics: Essays with an Australian Focus (Sydney: Allen & Unwin, 1990) pp.vii+207. $17.95 ISBN 0 04 442269 5.

P. Hay, R. Eckersley and G. Holloway, Environmental Politics in Australia and New Zealand (Hobart: University of Tasmania, 1989) pp.200. $n.p. ISBN 0 85901 405 3.

Peter Larmour (ed.) The Greening of Government: The Impact of the Labor/Green Accord on Government in Tasmania (Hobart: Royal Australian Institute of Public Administration, 1990) pp.iv + 74. $12.00.

Ian McAllister, Malcolm Mackerras, Alvaro Ascui and Susan Moss Australian Political Facts (Longman Cheshire, 1990) pp.x + 234. $12.99 ISBN 0 582 71258 0.

John Summers, Dennis Woodward and Andrew Parkin (eds.), Government, Politics and Power in Australia (Melbourne: Longman Cheshire, 4th edition, 1990) pp.375. $n.p. 0 582 86843 2.

Comparative and international politics

Archie Brown (ed.), Political Leadership in the Soviet Union (London: Macmillan, 1989) pp.xi + 245. $14.99 ISBN 0 333 41343 1.

Henry P. Frei, Japan's Southward Advance and Australia—from the sixteenth century to World War II (Melbourne: Melbourne University Press, 1991) pp.xvii + 303. $34.95 ISBN 0 522 843921.

Manuel Antonio Garreton, The Chilean Political Process (Translated by Sharron Kellum and Gilbert W. Merkx) (London: Unwin Hyman, 1989) pp.xix + 220. $39.95 ISBN 0 04 497069 2.

Timothy Garton Ash, We The People, The Revolution of ‘89, Witnessed in Warsaw, Budapest, Berlin & Prague (Cambridge: Granta Books, 1990) pp.156. $12.99 ISBN 0 14 014023 9.

Misha Glenny, The Rebirth of History: Eastern Europe in the Age of Democracy (London: Penguin, 1990) pp.xiii + 245. $14.99 ISBN 0 14 014394 7.

Dennis Gilbert, Sandinistas: the party and the revolution (Oxford: Basil Blackwell, 1988, paperback edition, 1990) pp.xii + 238. $29.95 ISBN 1 55786 072 6.

Dennis Kavanagh and Peter Morris, Consensus Politics from Attlee to Thatcher (Basil Blackwell, 1989) pp.ix + 137. £6.95 ISBN 0 631 16566 5.

Institute of Southeast Asian Studies, Southeast Asian Affairs 1990. (Southeast Asian Studies, 1990) pp.x + 395. $US37.00 ISBN 0377 5437.

David Lane, Soviet Society under Perestroika (Boston: Unwin Hyman, 1990) pp.xv + 401. $34.95 ISBN 0 04 445167 9.

Ralph Miliband, Divided Societies: Class Struggle in Contemporary Capitalism (Oxford: Clarendon Press, 1989) pp.x + 277. $n.p. ISBN 0–19827535–8.

J.D.B. Miller and John Vincent (eds.), Order and Violence: Hedley Bull and International Relations (Oxford: Clarendon Press, 1990) pp.viii + 220. $55.00 ISBN 0 19 827555 2.

Peter Riddell, The Thatcher Decade: How Britain has changed during the 1980s (Oxford: Basil Blackwell, 1989) pp.x + 236. $39.50 ISBN 631 16274 7.

Carlyle A. Thayer, War by Other Means: National Liberation and Revolution in Vietnam 1954–1960 (Sydney: Allen and Unwin, 1989) pp.xxx + 256. $19.95 ISBN 0 04 370187 6.

Malcolm Waters, Class and Stratification: Arrangements for Socioeconomic Inequality Under Capitalism (Melbourne: Longman Cheshire, 1990) pp.ix + 199. $n.p. ISBN 0 582 86833 5.

Political theory and methodology

Rodney Barker, Political Legitimacy and the Stale (Oxford: Clarendon Press, 990) pp. 216. $62.50 ISBN 0 19 827495 5.

John Braithwaite and Philip Pettit, Not Just Deserts (Oxford: Clarendon Press, 1990) pp.viii + 229. $65.00 ISBN 0 19 824233 6.

David Gauthier, Moral Dealing: Contract, Ethics, and Reason (Ithaca: Cornell University Press, 1990). pp.377. $14.95 ISBN 0 8014 2431 3.

G.T. Kaplan and C.S. Kessler (eds.), Hannah Arendt (Sydney: Allen and Unwin, 1989) pp.xi + 178. $16.95 ISBN 0 04 920109 3.

David W. Lovell, Marx's Proletariat: The Making of a Myth (N.Y.: Routledge, 1988) pp.261. $27.59 ISBN 0–415–00116–1.

Schmidtz, David. The Limits of Government: An Essay on the Public Goods Argument (Boulder: Westview Press, 1991) pp.xviii + 197. $21.00 ISBN 0 81 330871 2.

Michael Thompson, Richard Ellis, Aaron Wildavsky, Cultural Theory (Boulder, San Francisco and Oxford: Westview Press, 1990) pp.xiv + 296. $49.95 ISBN 0 8133 7863 X.  相似文献   

54.
55.
56.
57.
Previous research efforts demonstrate the use of location covering in the spatial structuring of central places within a single-good context. In a multilevel context, this paper similarly develops a mathematical programming approach to the siting of central places based on the “protection” of inner (or threshold) markets. The objective function maximizes both market coverage of demand and market overlap, subject to an upper bound on market overlap; this allows the formation of different market structures consistent with the various K-valued central place systems of Christaller and Lösch. Siting examples serve to illustrate the working of the protected threshold model in isotropic settings. Furthermore, ways in which the present model might be extended for other situations are examined.  相似文献   
58.
James Pattison 《对极》2023,55(4):1213-1233
This paper draws on a multimethod ethnographic study, conducted between 2016 and 2017 in Shirebrook, Derbyshire, England—a small and relatively isolated deindustrialising colliery town—examining how residents negotiate living in stigmatised territory. In doing so, microspatial strategies of distancing, avoidance, and deflection are illustrated, revealing how residents reassign and deepen stigma in particular locations within a stigmatised territory. This highlights the relationship between social and physical space, and while spatial strategies of negotiation do not mitigate stigma, they do (re)produce internal social hierarchies within a place that is homogenised from the outside through disparaging narratives. A key contribution reveals the significance of the racialised production of space in shaping how territorial stigma is negotiated within this distinct socio-spatial location. Residents use strategies to redirect the stigma toward those seen as out of place and draw attention away from sticky sites of racialised urban stigma towards symbols of unspoilt rural Englishness.  相似文献   
59.
In 2022, an Athenian red-figured cup attributed to Makron was returned to Italy by New York’s Metropolitan Museum of Art. The cup had been acquired in fragments, through purchase and gift, from multiple sources over several years, starting with two fragments from the restorer Fritz Bürki in 1978. A second cup, also attributed to Makron, was acquired in a parallel way. The sources for the fragments from both cups point to galleries collectors and donors – Summa Galleries, Frieda Tchachos, Elizabeth Hecht, and Dietrich von Bothmer – who have been associated with other material that has been repatriated to Italy in recent years. It is suggested that some of the incised ‘signatures’ by Hieron that are found on cups attributed to Makron may have been applied since antiquity.  相似文献   
60.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号