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   374篇
  免费   11篇
各国政治   19篇
工人农民   34篇
世界政治   33篇
外交国际关系   26篇
法律   175篇
中国政治   8篇
政治理论   88篇
综合类   2篇
  2022年   3篇
  2021年   4篇
  2020年   8篇
  2019年   14篇
  2018年   10篇
  2017年   16篇
  2016年   16篇
  2015年   10篇
  2014年   15篇
  2013年   52篇
  2012年   8篇
  2011年   19篇
  2010年   10篇
  2009年   22篇
  2008年   14篇
  2007年   16篇
  2006年   12篇
  2005年   13篇
  2004年   4篇
  2003年   14篇
  2002年   10篇
  2001年   5篇
  2000年   6篇
  1999年   8篇
  1998年   7篇
  1997年   6篇
  1996年   7篇
  1995年   9篇
  1994年   3篇
  1993年   4篇
  1991年   3篇
  1990年   2篇
  1989年   4篇
  1986年   2篇
  1985年   4篇
  1982年   3篇
  1980年   3篇
  1979年   1篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
  1975年   1篇
  1974年   1篇
  1973年   1篇
  1972年   2篇
  1971年   2篇
  1970年   1篇
  1968年   1篇
  1967年   1篇
  1966年   1篇
排序方式: 共有385条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
Eighteen external quality assessment (proficiency testing) samples were prepared from client specimens collected with the Intercept® oral fluid collection device and by spiking drug-free oral fluid. Samples were circulated in pairs at quarterly intervals to 13 UK and USA based laboratories for analysis by a panel of OraSure micro-plate Intercept® enzyme immunoassay kits and hyphenated mass spectrophotometric techniques. During the survey, there was a single case of non-specificity in a false report for methadone. The major errors were of lack of sensitivity relative to the concentration thresholds specified for the immunoassays. The sensitivity for overall ‘present’/‘not found’ reports calculated as true positives/(true positives + false negatives) were for the amfetamine specific assay 50%, methyl-amfetamines 93%, barbiturates 64%, cannabinoids 73%, cocaine and metabolites 100%, benzodiazepines 69%, methadone 95%, opiates 79% (opiates excluding oxycodone 93%), phencyclidine 93% and human gamma-globulin 97%. A small number of the sensitivity errors were attributable to errors in chromatographic confirmation techniques.  相似文献   
5.
Reviews     
Susan Gross Solomon (ed.), Beyond Sovietology: Essays in Politics and History. New York and London: M.E. Sharpe, 1993, 254 pp., £38.00.

Alice H. Amsden, Jacek Kochanowicz & Lance Taylor, The Market Meets Its Match. Restructuring the Economics of Eastern Europe. Cambridge, MA: Harvard University Press, 1994, 250 pp.

Robert E. Ebel, Energy Choices in Russia. Washington, DC: Center for Strategic and International Studies, 1994, xii + 152 pp., $16.95.

Michael Waller, The End of the Communist Power Monopoly. Manchester: Manchester University Press, 1993, viii + 287 pp., £35.00 h/b., £9.99 p/b.

Minxin Pei, From Reform to Revolution: The Demise of Communism in China and the Soviet Union. Cambridge, MA: Harvard University Press, 1994, 253 pp., £29.95.

William G. Rosenberg & Lewis H. Siegelbaum (eds), Social Dimensions of Soviet Industrialisation. Bloomington and Indianapolis, IN: Indiana University Press, 1993, xix + 296 pp., £12.99 p/b.

Taras Kuzio & Andrew Wilson, Ukraine: Perestroika to Independence. Basingstoke: Macmil‐lan Press, 1994, xiv + 260 pp., £40.00.

Russell F. Farnen (ed.), Nationalism, Ethnicity, and Identity. Cross National and Comparative Perspectives. New Brunswick, NJ, and London: Transaction, 1994, xiv + 538 pp., £49.95.

Edwin Thomas Bacon, The Gulag at War: Stalin's Forced Labour System in the Light of Archives. Basingstoke: Macmillan, 1994, xii + 190 pp.

Robert S. Ross, China, the United States and the Soviet Union: Tripolarity and Policy Making in the Cold War. Armonk, NY: M. E. Sharpe, 1993, x + 204 pp., £42.00.  相似文献   

6.
Child mortality was analyzed in relation to 3 dimensions of reproductive behavior: birth intervals, additional children desired, and contraceptive use. Study data were drawn from a 1978 survey conducted in 2 predominantly rural governorates, Beheira and Kafr El-Sheikh, in lower Egypt. Within each governorate, 2 districts were selected on the basis of their distance from the capital of the governorate, agricultural output by major crops, percent of the population urban, infant mortality rate, and crude birthrate. Within each of the 4 districts, villages were randomly drawn from 3 strata: villages lacking any governmental services; villages with limited services (health center or primary school); and villages served by a combined unit center providing integrated services. A random sample of household heads was selected from household registration records of the provision office of each district. 1200 interviews were obtained from 685 households. Restriction of the sample to women with 1 or more live births, and the elimination of 13 cases with incomplete or inaccurate information, yielded 1010 cases for analysis. The basic measure of actual fertility was birth intervals. For the total sample and within each age category, cumulative fertility is higher the greater the number of child deaths. The data demonstrate a strong relationship between child mortality experience and cumulative fertility. The problem lies in interpreting such results. With some exceptions, birth intervals increased as expected with increasing parity. Women without child death experience displayed longer birth intervals than women who had not lost a child. With the single exception of the 7th parity women, all differences were statistically significant. The data fail to eliminate potential biological influences on subsequent fertility. With biological influences adequately controlled, no behavioral differences remained. Women who experienced child mortality desired greater numbers of additional children than women without child death experience. 19% of respondents were ever users of contraception, with women of low parity the least likely ever to have used contraception.  相似文献   
7.
Presidents traditionally have had great success when nominating justices to the Supreme Court, with confirmation being the norm and rejection being the rare exception. While the confirmation process usually ends with the nominee taking a seat on the Court, however, there is a great deal of variance in the amount of time it takes the Senate to act. To derive a theoretical explanation of this underlying dynamic in the confirmation process, we draw on a spatial model of presidential nominations to the Court. We then employ a hazard model to test this explanation, using data on all Supreme Court nominations and confirmations since the end of the Civil War. Our primary finding is that the duration of the confirmation process increases as the ideological distance between the president and the Senate increases. We also find evidence that suggests that the duration increases for critical nominees and chief justices and decreases for older nominees, current and previous senators, and nominees with prior experience on state and federal district courts .  相似文献   
8.
9.
The construction industry is the most male-dominated labour market in every country in Europe. In Britain and Denmark, women constitute only 1% of those employed in this industry. In spite of the barriers to women entering and remaining in skilled construction work, inroads have been made. Amongst housepainters in Denmark, for instance, women constitute 27% of the workforce and 40% of trainees, and in a number of local authorities' Direct Labour Organisations in Britain, relatively high proportions are to be found. Through the example of two women painters in Britain and Denmark, each with over 14 years' continuous employment, the authors identify the opportunities and obstacles to women entering and remaining in the construction industry. The commonalities and differences between the two countries are illustrated, and it is shown how integration has successfully occurred where social and working conditions are better. The paper concludes that gender segregation and the exclusion of women can be attributed to structural discrimination through training and recruitment mechanisms, the nature of labour relations, employment conditions and the wage system.  相似文献   
10.
I examine why states violate norms they embrace as members of international society. The rationalist answer, that norms are violated whenever they conflict with interests, is underspecified and empirically challenged. Constructivists cannot address violations well from their structural, sociological perspective. I argue from political psychology that violations stem from the motivated biases of actors who face a moral dilemma between personal desires and social constraints. These biases compel leaders to interpret norms and situations in a manner that justifies violation as socially acceptable. The ability to do so depends on the norm and the situation. The more parameters a norm possesses, and the more ambiguous those parameters are, the easier it is for actors to interpret them favorably to justify violation. Oftentimes norms are what states make of them. If the situation is plausible for states to claim exemption, they violate; otherwise they are constrained. The U.S. invasion of Panama illustrates these dynamics.  相似文献   
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