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   8620篇
  免费   322篇
  2020年   116篇
  2019年   163篇
  2018年   172篇
  2017年   211篇
  2016年   288篇
  2015年   183篇
  2014年   168篇
  2013年   2187篇
  2012年   213篇
  2011年   260篇
  2010年   236篇
  2009年   211篇
  2008年   204篇
  2007年   172篇
  2006年   164篇
  2005年   113篇
  2004年   114篇
  2003年   105篇
  2002年   114篇
  2001年   126篇
  2000年   136篇
  1999年   172篇
  1998年   114篇
  1997年   77篇
  1996年   89篇
  1995年   94篇
  1994年   91篇
  1993年   94篇
  1992年   97篇
  1991年   76篇
  1990年   75篇
  1989年   79篇
  1988年   85篇
  1987年   92篇
  1986年   88篇
  1985年   122篇
  1984年   121篇
  1983年   129篇
  1982年   99篇
  1981年   104篇
  1980年   107篇
  1979年   102篇
  1978年   94篇
  1977年   108篇
  1976年   86篇
  1975年   95篇
  1974年   84篇
  1973年   80篇
  1972年   62篇
  1971年   66篇
排序方式: 共有8942条查询结果,搜索用时 15 毫秒
971.
K. N. YU  J. M. MIAO 《Archaeometry》1998,40(2):331-339
The energy dispersive X-ray fluorescence technique was employed to study non-destructively the surface of 66 samples of Chinese porcelain, of different periods and origins, and determine the contents of 13 chemical elements, namely, Ti, Mn, Fe, Co, Ni, Cu, Zn, Ga, Pb, Rb, Sr, Y and Zr. Principal components analysis was performed on these 13 variables, and scatter plots, incorporating the first, second and third principal components, used to study the clustering behaviour of the data. Based on these results, discriminant analysis was then performed on the data, and discriminant functions established for attributing the period and origin of the porcelains.  相似文献   
972.
To date, there has not been a sustained attempt to bring the philosophy of the Third Way into foreign policy. In order to fill this gap, the authors turn to the idea of 'good international citizenship' pioneered by the former Australian Foreign Minister, Gareth Evans. It is argued that good international citizenship provides a conceptual rationale for an ethical foreign policy as well as a standard for judging the priority accorded to the goals of security, trade and human rights. Through an examination of a number of cases, the authors conclude that Britain's record as a good international citizen has been uneven and argue—against Labour's critics—that the government has set a new course for Britain's way in the world. More importantly, it has encouraged a public debate about the meaning and priority accorded to the promotion of different values.  相似文献   
973.
Reviews     
Shicite Islam: Polity, Ideology, and Creed , Yann Richard, trans. Antonia Nevill, Oxford, U.K. and Cambridge, U.S.A.: Blackwell, 1995, pp. 217, chronology, glossary, bibliography, index.

Mongols and Mamluks: The Mamluk‐Ilkhanid War, 1260–1281 , Reuven Amitai‐Preiss, Cambridge: Cambridge University Press, 1995, xv + 272 pp.

The Bukharans: A Dynastic, Diplomatic and Commercial History 1550–1702 , Audrey Burton, Richmond, Surrey: Curzon Press, 1997, 664 pp.

Cahiers d'Asie Centrale, No. 1/2 (1996): Inde‐Asie centrale. Routes du commerce et des idées , Tashkent: l'Institut Français d'études sur l'Asie centrale/Aix‐en‐Provence: Editions Edisud, 1996, 366 pp.

The Diary of H.M. Shah of Persia during his tour through Europe in A.D. 1873 , trans. from the Persian by J.W. Redhouse, London, 1874, reprinted 1995, with a new introduction by Carole Hillenbrand, Bibliotheca Iranica. Reprint Series No. 2, Mazda Publishers, Costa Mesa, Calif., [xvi] + xi + 427 pp.

Presse und Öffentlichkeit im Nahen Osten , Christoph Herzog, Raoul Motika, and Anja Pistor‐Hatam, eds., Heidelberg: Heidelberger Orientverlag, 1995, viii + 183 pp.

The Army and the Creation of the Pahlavi State in Iran, 1910–1956 , Stephanie Cronin, London: Tauris Academic Studies, 1997, 296 pp., 3 appendices.

The Republic of Armenia, Volume III: From London to Sèvres, February‐August, 1920; Volume IV: Between Crescent and Sickle: Partition and Sovietization , Richard Hovannisian, Berkeley: University of California Press, 1996, xx + 534 pp., xii + 496 pp.

Majlis va Intikhabat: az Mashrūtah ta Payan‐i Qajar , Mansoureh Ettehadieh (Nezam‐Mafi), Tehran: Nashr‐i Tarikh‐i Iran, 1375/1996–97, 368 pp.

L'Iran au XXe siècle , Jean‐Pierre Digard, Bernard Hourcade, Yann Richard, Paris: Fayard, 1996, 459 pp.

The Shicis of Iraq , Yitzhak Nakash, Princeton: Princeton University Press, 1994, xiv + 312 pp., cloth and paperback.

Debating Religion and Politics in Iran: The Political Thought of Abdolkarim Sorush , Valla Vakili, New York, N.Y.: Studies Department, Occasional Paper Series, no. 2, The Council on Foreign Relations, Inc., 1996, 56 pp.

Tanker Wars: The Assault on Merchant Shipping during the Iran‐Iraq Conflict, 1980–1988 , Martin S. Navias and E. R. Horton, London and New York: I.B. Tauris Publishers, 1996, ix + 244 pp., including appendix, notes, index of ships, and general index. Cloth.

The Turbulent Gulf: People, Politics and Power , 2nd ed., Liesl Graz, London and New York: I.B. Tauris Publishers, 1992. 311 pp., including notes, appendices, bibliography, and index. Paperback.

The Topkapi Scroll: Geometry and Ornament in Islamic Architecture , Gülru Necipo?lu, with an essay on the geometry of the muqarnas by Mohammad al‐Asad, Santa Monica: Getty Center for the History of Art and the Humanities, 1995, xiii + 395, plates, plan, bibliography, index, $160.00.

Techniques et ressources en Iran du 7e au 19e siècle , Parviz Mohebbi, Tehran: Institut Français de Recherche en Iran, 1996.

Suppressed Persian: An Anthology of Forbidden Literature , Paul Sprachman, Costa Mesa, Calif.: Mazda Publishers, lviii + 111 pp., $29.95.  相似文献   

974.
In this paper a model of spatial Cournot competition among retail firms is devised and used to assess the effect of a variety of structural factors on retail prices and profits. The model illustrates the spatial chain of interaction that firms must anticipate to reach equilibrium when organized in chains or as independents. It shows the sensitivity of price to the location of stores, the number of stores per location, and transportation cost.  相似文献   
975.
976.
Abstract. Since the First World War, grants of territorial autonomy have been a widespread means by which regimes of diverse ideologies and political cultures have attempted to address the demands of regional cultural communities within their borders. Cantonisation, or asymmetrical decentralisation along territorial-cultural lines, has been a common form of territorial autonomy employed by these states. Yet, despite its importance, little is known about whether and why such cantonisation measures have helped or hindered the search for peace and stability in culturally heterogeneous states. Part of the answer lies in analysing the historical-political contexts, or historical paths, by which cantonisation arrangements have emerged. Comparative analysis identifies five such paths: international settlements; state-building; democratisation or transitions from authoritarian rule; democratic maintenance; and decolonisation. Each of these paths poses distinctive problems for the evolution of the cantonisation arrangement.  相似文献   
977.
978.
979.
980.
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