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   67887篇
  免费   3003篇
各国政治   4477篇
工人农民   2818篇
世界政治   5918篇
外交国际关系   3804篇
法律   31508篇
中国共产党   10篇
中国政治   762篇
政治理论   20653篇
综合类   940篇
  2021年   404篇
  2020年   1161篇
  2019年   1515篇
  2018年   1644篇
  2017年   1933篇
  2016年   2163篇
  2015年   1826篇
  2014年   2100篇
  2013年   10502篇
  2012年   1586篇
  2011年   1691篇
  2010年   1808篇
  2009年   2044篇
  2008年   1726篇
  2007年   1694篇
  2006年   1864篇
  2005年   1744篇
  2004年   1626篇
  2003年   1443篇
  2002年   1499篇
  2001年   1499篇
  2000年   1309篇
  1999年   1179篇
  1998年   1084篇
  1997年   985篇
  1996年   944篇
  1995年   904篇
  1994年   912篇
  1993年   938篇
  1992年   943篇
  1991年   977篇
  1990年   922篇
  1989年   979篇
  1988年   961篇
  1987年   972篇
  1986年   961篇
  1985年   1015篇
  1984年   928篇
  1983年   961篇
  1982年   886篇
  1981年   825篇
  1980年   643篇
  1979年   695篇
  1978年   591篇
  1977年   525篇
  1976年   484篇
  1975年   420篇
  1974年   432篇
  1973年   438篇
  1972年   388篇
排序方式: 共有10000条查询结果,搜索用时 11 毫秒
951.
A life-span developmental perspective suggests that variations in social context will lead to differences among individuals in their action orientations. An action orientation is defined by an individual's values, control beliefs, goal orientation, and decision-making perspective. To investigate differences in the action orientations of adolescents embedded in different contexts, 83 sophomore and senior high school students on either a vocational training or college-preparatory trajectory participated in the study. A discriminant function analysis of action orientations showed that the action orientations of vocational training and college-preparatory students differed: College-preparatory students had a career preparation action orientation and vocational students had an adult preparation action orientation; also, sophomores may have had a socializing orientation. The findings are discussed in terms of the developmental tasks facing students in different grades and on different life-course trajectories. Received Ph.D. from West Virginia University. Research interests are cognitive and social cognitive development in cultural and institutional contexts.Received Ph.D. from the University of Iowa. Research interests include adult developmental and problem solving.  相似文献   
952.
Reviews     
Stephen White, Alex Pravda & Zvi Gitelman, eds, Developments in Soviet Politics. London: Macmillan, 1990, xvii+310 pp., £35.00 h/b, £9.99, p/b.

Jiri Valenta & Frank Cibulka, eds, Gorbachev's New Thinking and Third World Conflicts. New Brunswick, NJ: Transaction Publishers, 1990, xxxiii+352 pp., $34.95, £25.95.

John Bushnell, Moscow Graffiti: Language and Subculture. Boston, MA: Unwin Hyman, 1990, xii+263 pp., £28.00 h/b, £9.95 p/b.

Susanne Oxenstierna, From Labour Shortage to Unemployment? The Soviet Labour Market in the 1980s. Stockholm: Almqvist & Wiksell International, 1990, 311 pp., SEK 206.00.

E. Biberaj, Albania, A Socialist Maverick. Boulder, San Francisco, and Oxford: Westview Press, 1990, viii+157 pp., £22.95.

Christopher Cerf & Marina Albee, eds, Small Fires: Letters from the Soviet People to Ogonyok Magazine 1987–1990, with an introduction by Vitaly Korotich, editor‐in‐chief of Ogonyok, and an afterword by Andrei Sakharov. New York: Summit Books, 1990, 303 pp., $22.95.  相似文献   

953.
Reviews     
Terry L. Thompson & Richard Sheldon, eds, Soviet Society and Culture: Essays in Honor of Vera S. Dunham. Boulder, CO: Westview Press, 1988, xiii+290 pp., £21.00.

Michael Rywkin, Soviet Society Today. New York: M.E. Sharpe, 1989, xii+243 pp., $35.00 h/b, $12.50 p/b.

David Lane, Soviet Society Under Perestroika, London: Unwin Hyman, 1990, xv+401 pp., £40.00 h/b, £12.95 p/b.

Catherine Merridale, Moscow Politics and the Rise of Stalin: The Communist Party in the Capital, 1925–32. London: Macmillan, 1990, xv+328 pp., £47.50.

Roger Pethybridge, One Step Backwards, Two Steps Forward: Soviet Society and Politics under the New Economic Policy. Oxford: Clarendon Press, 1990, xi+453 pp., £48.00.

Francois Heisbourg, ed., The Strategic Implications of Change in the Soviet Union. London: Macmillan, 1990, vi+227pp., £40.00.

Neil Fodor, The Warsaw Treaty Organisation: a Political and Organizational Analysis. London: Macmillan, 1990, 235 pp., £40.00.

Gerald Segal, The Soviet Union and the Pacific. Boston, MA: Unwin Hyman, 1990, xiii+236 pp., £30.00 h/b, £10.95 p/b.

Philip S. Gillette & Willard C. Frank, Jr, eds, The Sources of Soviet Naval Conduct. Lexington, IN: Lexington Books, 1990, xvii+297 pp., $39.95.

Sylvia Woodby & Alfred B. Evans, Jr, eds, Restructuring Soviet Ideology: Gorbachev's New Thinking. Boulder, CO: Westview Press, 1990, 226 pp., £22.50.

Nikolai N. Petro, ed., Christianity and Russian Culture in Soviet Society. Boulder, CO: Westview Press, 1990, xi+244pp., £17.95 p/b.

David A. Dyker, Yugoslavia: Socialism, Development and Debt. London: Routledge, 1990, xi+201 pp., £30.00.

Agnes Heller & Ferenc Fehér, From Yalta to Glasnost. The Dismantling of Stalin's Empire. Oxford: Basil Blackwell, 1990, viii+288 pp., £35.00.

Elemer Hankiss, East European Alternatives. Oxford: Clarendon Press, 1990, xiv+319 pp., £35.00.

George Blazyca & Ryszard Rapacki, eds, Poland into the 1990s: Economy and Society in Transition. London: Pinter, 1991, x+148 pp., £27.50.

Michael D. Kennedy, Professionals, Power and Solidarity in Poland: A Critical Sociology of Soviet‐Type Society. Cambridge: Cambridge University Press, 1991, xiv+421 pp., £45.00, $59.50.

Graham Smith, ed., The Nationalities Question in the Soviet Union. London: Longman, 1990, x+389 pp., £22.50 h/b, £12.95 p/b.

James Muckle, Portrait of Soviet School under Glasnost. Basingstoke: Macmillan Press, 1990, ix+205 pp., £35.00.

Piers Beirne, ed., Revolution in Law: Contributions to the Development of Soviet Legal Theory, 1917–1938. Armonk, NY: M. E. Sharpe, 1990, xiii+202 pp., $49.95.

Richard M. Connaughton, The Republic of the Ushakovka: Admiral Kolchak and the Allied Intervention in Siberia, 1918–20. London: Routledge, 1990, ix+193 pp., £30.00.

Vitaut Kipel & Zora Kipel, eds, Byelorussian StatehoodReader and Bibliography. New York: Byelorussian Institute of Arts and Sciences, 1988, 398 pp.  相似文献   

954.
Deoxyribonucleic acid (DNA) was isolated from a number of spongy and compact human bone tissue specimens, and the yield was estimated on a "per milligram of starting tissue" basis. DNA was, in addition, isolated from a number of corresponding blood and bone tissue specimens. Spectrophotofluorometry and ethidium bromide visualization on minigels were used to estimate the quantity and degree of degradation of DNA. The DNA from several blood-bone pairs is shown to give concordant restriction fragment length polymorphism (RFLP) typing results by two different typing protocols with five different single-locus probes. DNA from several additional blood-bone pairs is shown to give concordant results for human leucocyte antigen (HLA)-DQ alpha phenotypes following polymerase chain reaction (PCR) amplification and hybridization to specific allele-specific oligonucleotide (ASO) probes, and for the variable numbers of tandem repeats (VNTR) length polymorphisms 3' to the human apolipoprotein B (APOB) gene following PCR amplification with specific primers and analysis of the products by electrophoresis and ethidium bromide visualization.  相似文献   
955.
956.
Social scientists have increasingly become involved in the submission of amicus curiae or friend of the court briefs in legal cases being decided by state and federal courts. This increase has triggered considerable debate about the use of briefs to communicate relevant social science research. This article evaluates the strengths and weaknesses of various methods of summarizing social science research for the courts. It also reviews the procedures for submitting briefs developed by the American Psychology-Law Society which, in collaboration with the American Psychological Association, has submitted its first brief inMaryland v. Craig, a case recently decided by the U.S. Supreme Court.The authors wish to thank James Ogloff, Kathy Roesch, and Claudia Worrell for their comments on an earlier draft  相似文献   
957.
In 1989, after almost two decades of substance-by-substance standard setting, the Occupational Safety and Health Administration (OSHA) promulgated its Air Contaminants Standard, imposing new exposure limits for 376 toxic substances encountered in U.S. industry. In marked contrast to earlier regulations, the Air Contaminants Standard has generated relatively little industry opposition. This paper analyzes the standard in the context of the twenty-year debate over the appropriate role for technological feasibility and economic compliance costs in occupational health policy. The political feasibility of the new standard is traced to OSHA's abandonment of "technology forcing" in favor of reliance on "off-the-shelf" technologies already in use in major firms. While important as an embodiment of OSHA's new "generic" approach to regulation, the Air Contaminants Standard cannot serve as a model for future occupational health policy, due to its reliance on informal, closed-door mechanisms for establishing regulatory priorities and permissible exposure limits.  相似文献   
958.
Although gunshot is by far the most common means of homicide in the United States, significant numbers of homicides are also perpetrated by other means. Blunt-force injuries are produced by a variety of objects, including hands and feet and many different weapons. Some of these objects produce distinctive patterns of injury of potential evidentiary value. This paper presents a series of 20 consecutive blunt-force homicides in adults. Seventy percent (14 cases) of the victims were men. Thirty percent (six cases) followed an argument or altercation. A number of the weapons used were "weapons of opportunity" seized in the course of the incidents. Sixty-nine percent (nine cases) of known assailants were acquainted with their victims. Few characteristic patterned injuries were seen. Not surprisingly, craniocerebral trauma was the most common cause of death. One half (10 cases) the victims survived their assaults for varying periods of time. Homicides due to blunt-force injury still pose a significant challenge for the forensic pathologist, who must obtain a complete and accurate history of the fatal incident, interpret patterns of injury and other findings at autopsy, and correlate all of the findings to make an accurate ruling of the cause and manner of death.  相似文献   
959.
InMaryland v. Craig, the United States Supreme Court relied heavily on a brief prepared by a committee of the American Psychology-Law Society on behalf of the American Psychological Association (APA). The APA brief concluded that sexually abused children may be particularly vulnerable to distress in the legal process, especially when forced to confront the defendant face to face, and that such acute distress may be inconsistent with the state's interests in promotion of reliable testimony and child welfare. APA also argued that psychological theory and research provide foundations for individualized determination of the need for measures to protect children from face-to-face confrontation. *** DIRECT SUPPORT *** AFE06051 00002  相似文献   
960.
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