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   71004篇
  免费   3282篇
各国政治   4492篇
工人农民   2950篇
世界政治   6257篇
外交国际关系   3842篇
法律   34107篇
中国共产党   11篇
中国政治   751篇
政治理论   20929篇
综合类   947篇
  2021年   410篇
  2020年   1167篇
  2019年   1519篇
  2018年   1686篇
  2017年   2003篇
  2016年   2187篇
  2015年   1825篇
  2014年   2101篇
  2013年   10543篇
  2012年   1686篇
  2011年   1796篇
  2010年   1861篇
  2009年   2081篇
  2008年   1826篇
  2007年   1806篇
  2006年   1931篇
  2005年   1829篇
  2004年   1723篇
  2003年   1563篇
  2002年   1568篇
  2001年   1796篇
  2000年   1553篇
  1999年   1355篇
  1998年   1156篇
  1997年   1022篇
  1996年   986篇
  1995年   948篇
  1994年   982篇
  1993年   986篇
  1992年   1039篇
  1991年   1076篇
  1990年   1005篇
  1989年   1070篇
  1988年   1044篇
  1987年   1060篇
  1986年   1048篇
  1985年   1096篇
  1984年   980篇
  1983年   1044篇
  1982年   934篇
  1981年   889篇
  1980年   695篇
  1979年   742篇
  1978年   609篇
  1977年   559篇
  1976年   519篇
  1975年   439篇
  1974年   435篇
  1973年   437篇
  1972年   390篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
301.
302.
The results of additional validation studies of a sensitive microplate hemagglutination assay for ABO reverse grouping of bloodstains are presented. The results of the validation study demonstrate the reliability of the microplate assay for use in routine serological casework. Based on these studies, the microplate assay has now replaced the Lattes crust test for ABO reverse grouping of bloodstains in the FBI Laboratory.  相似文献   
303.
This study examines changes in the rate of offending in a sample of 8,834 males whose official juvenile law-violating careers included 26,650 offense episodes between ages 8 and 17 The rate of offending of active offenders (i.e., lambda) varied substantially as a function of age, increasing monotonically with age. Lambda, however, was not related to the age at first offense. In fact, the average lambda was amazingly constant at each individual age level regardless of the age at which offending began or desisted. Results are discussed in the light of age-crime curves known from other data sets and from the perspective of developmental changes in the rate of offending as youths grow older.  相似文献   
304.
305.
306.
To account for variance in great powers responses to threats and the implications for the peacefulness of the international system since the late nineteenth century, this article elucidates a theory which refines and synthesizes economic liberal perspectives and realist balance of power theory. I argue that different patterns and levels of economic interdependence in the great power system generate societal-based economic constraints on, or incentives for, state leaders of status quo powers hoping to mobilize economic resources and political support to oppose perceived threats. This mobilization process influences strongly the preferences of status quo powers, other states beliefs about those preferences, and the interpretation of signals in balance of power politics. In this way, economic ties influence the strategies great powers pursue. Firm balancing policies conducive to peace in the international system are most likely, I then hypothesize, when there are extensive economic ties among status quo powers and few or no such links between them and perceived threatening powers. When economic interdependence is not significant between status quo powers or if status quo powers have strong economic links with threatening powers, weaker balancing postures and conciliatory policies by status quo powers, and aggression by aspiring revisionist powers, are more likely. I then illustrate how these hypotheses explain the development of the Franco-Russian alliance of the 1890s and its effectiveness as a deterrent of Germany up to 1905, British ambivalence toward Germany from 1906 to the First World War, the weakness of British, French, Soviet, and American behavior toward Germany in the 1930s and World War II, and the American and European responses to the Soviet threat, including the NATO alliance, and the "long peace" of the post-1945 era.  相似文献   
307.
The application of Lacanian psychoanalytic semiotics to the intersecting categories of criminal justice and mental health is relatively novel. In this paper the phenomenon of transcarceration or the repeated channeling of disordered defendants (subjects) through institutional regimes of discipline and coercion is outlined. Attention is directed at the intra-psychic and intersubjective mechanisms responsible for the structuring of discourse. Lacan's schematization on the constitution of master narratives through the Discourse of the Master is also delineated. The author concludes by demonstrating how transcarceration is fundamentally about language and privileged speech patterns which agents of both systems as well as subjects themselves perpetuate. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
308.
Blood previously acidified with aqueous saturated ammonium chloride solution was extracted with ethyl acetate. The dried extract was subjected to acetonitrile–hexane partition. The acetonitrile portion was analysed for the presence of acidic and neutral drugs by HPLC–DAD (200 mm×2.1 mm I.D. microbore ODS-Hypersil column) and GC–FID (25 m narrow-bore×0.25 mm I.D. HP-5 column with 0.33 μm film thickness). The protocol was found to be suitable for both clinical toxicology (including emergency toxicology) and postmortem toxicology. At least 66 drugs of interest were unequivocally identified by RRTs (HPLC) and UV spectra (DAD) match while another 12 were unequivocally identified by double RRTs match (HPLC and GC). Quantitation was facilitated by incorporating calibration blood standards in each assay batch. The five drugs most commonly encountered in clinical blood specimens (1150 cases) were: paracetamol (47.4% of the cases); chlormezanone (6.6%), theophylline (1.74%), naproxen (1.65%) and mefenamic acid (1.56%). The following drugs were detected in toxicologically significant quantities in postmortem blood specimens (245 cases): phenobarbitone (1.22% of the cases), naproxen (0.82%), chlormezanone (0.82%), theophylline (0.82%), carbamazepine (0.41%) and paracetamol (0.41%).  相似文献   
309.
310.
Cubitt  Robin P. 《Public Choice》1997,93(1-2):165-178
Economics Research Centre, School of Economic and Social Studies, University of East Anglia, Norwich NR4 7TJ, U.K. The paper investigates the claim of Gylfason and Lindbeck (Public Choice, 1994) that a stagflationary bias arises from the interaction between monetary policymaking and wagesetting if, among other things, the government and unions share a concern for inflation. It uses a game theoretic model of this interaction, in which the government plays an economy-wide union. Though simple, this nests several other models as special cases. In that corresponding to Gylfason and Lindbeck's model, the factors which they identify are shown to be sufficient for stagflationary bias, in a specified sense. However, for the union to care about inflation is not a necessary condition. The main result of the paper concerns the more general model. It establishes a set of necessary and sufficient conditions for stagflationary bias, as previously defined. These conditions do not include a shared concern for inflation. The paper comments briefly on the significance of this result for stagflation and economic modelling.  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