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   75314篇
  免费   3291篇
  国内免费   5篇
各国政治   4504篇
工人农民   3076篇
世界政治   6282篇
外交国际关系   3941篇
法律   37790篇
中国共产党   49篇
中国政治   834篇
政治理论   21096篇
综合类   1038篇
  2021年   423篇
  2020年   1194篇
  2019年   1553篇
  2018年   1780篇
  2017年   2076篇
  2016年   2268篇
  2015年   1857篇
  2014年   2119篇
  2013年   10666篇
  2012年   1808篇
  2011年   1982篇
  2010年   1958篇
  2009年   2187篇
  2008年   2039篇
  2007年   2071篇
  2006年   2179篇
  2005年   2058篇
  2004年   1918篇
  2003年   1725篇
  2002年   1746篇
  2001年   1951篇
  2000年   1685篇
  1999年   1486篇
  1998年   1200篇
  1997年   1025篇
  1996年   1001篇
  1995年   958篇
  1994年   985篇
  1993年   995篇
  1992年   1120篇
  1991年   1210篇
  1990年   1132篇
  1989年   1142篇
  1988年   1164篇
  1987年   1127篇
  1986年   1146篇
  1985年   1182篇
  1984年   1051篇
  1983年   1091篇
  1982年   927篇
  1981年   903篇
  1980年   701篇
  1979年   760篇
  1978年   645篇
  1977年   575篇
  1976年   518篇
  1975年   467篇
  1974年   490篇
  1973年   481篇
  1972年   407篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
111.
This paper uses historical content analysis to examine the implementation ofthe Racketeer Influenced Corrupt Organizations Act (RICO). It is argued thatthe historical events leading to the definition of organized crime as an alienconspiracy still affect RICO's use some 30 years after its passage. This paper applies state-centered theory to the theoretical frameworks of sociology of knowledge and innovation diffusion. This approach is used to relate the current implementation and controversy of RICO to the alien conspiracy view. Thought of in this context, legal implementation is the result of a knowledge creation and diffusion process. This paper demonstrates how one knowledge diffusionprocess (the acceptance of organized crime as a national conspiracy in 1970) leads to a new knowledge diffusion process (the use of RICO).  相似文献   
112.
Law and Philosophy -  相似文献   
113.
This paper reports results of a study based on a nationally representative sample of U.S. youth (N = 11,549) that asked two questions: (1) How does family structure affect the likelihood of adolescent death beyond that of race/ethnicity, sex, socioeconomic status, personal behavior, and other structural factors and (2) under what conditions might appeals for social justice be warranted for relative mortality statuses and for absolute gains in mortality? The study found that marital instability increases the likelihood of dying when controlling for a variety of other factors including class, race/ethnicity, sex, and unemployment rate in area of residence. The author argues that this finding lends support to social justice arguments to redistribute resources in such a way as to ensure the likelihood of absolute gains in mortality. The study also found, however, that race/ethnicity/sex also accounted for the likelihood of dying independently of family structure when controlling for socioeconomic and other factors. The author argues that this finding lends support to social justice arguments to redistribute resources on the basis of relative mortality statuses.  相似文献   
114.
Restriction fragment length polymorphism (RFLP) analysis for the purpose of individualization is now being used in casework in the People's Republic of China. This report describes the use of the multilocus minisatellite probe 33.15 to solve three cases, including two homicides and a rape. In the third case, fetal tissue was analyzed to prove that the alleged rapist was, in fact, the father. In each case, analysis of deoxyribonucleic acid (DNA) resulted in a positive match. The probability of chance association of the DNA fingerprint was calculated as 5.6 x 10(-12), which is similar to the figures reported in the literature.  相似文献   
115.
This research note critically evaluates conventional methods for allocating homicides with an unknown victim/offender relationship to meaningful categories, and it proposes an alternative approach. We argue that conventional methods are based on a problematic assumption, namely, that the missing data mechanism is “ignorable.” As an alternative to these methods, we propose an imputation algorithm derived from a log‐multiplicative model that does not require this assumption. We apply this technique to estimate levels of homicides disaggregated by victim/offender relationship using the Federal Bureau of Investigation's Supplementary Homicide Report (SHR) data for 1996 and 1997, and we compare the resulting estimates with those obtained from the application of conventional procedures. Our results yield a larger proportion of stranger homicides than are obtained from the conventional methods.  相似文献   
116.
大鼠液压冲击脑损伤TGF-β1及其受体TβR I的表达   总被引:7,自引:1,他引:6  
目的观察脑损伤后TGF-β1及其受体TβRI蛋白表达及其时序性变化,探讨脑损伤的分子机制及法医学脑损伤时间推断。方法用免疫组织化学方法观察大鼠液压冲击脑损伤后TGF-β1及其受体TβRI蛋白在伤后不同时间(30 min、1 h、3 h、6 h、12 h、1 d、3 d、7 d)的表达情况,以正常大鼠及手术大鼠作为对照。结果 (1)正常及手术对照组大鼠脑组织内有低水平的TGF-β1及TβRI表达;(2)脑损伤后1~3d,大脑皮质和脑干TGF-β1/TβRI蛋白表达逐渐增加,7 d时仍维持在高表达水平;(3)海马冲击后12 h~1 d逐渐增加,3 d时仍处于高表达水平,7 d时已开始下降。结论脑损伤可诱导TGF-β1/TβRI基因在脑内表达,其时序性改变可望用于法医学脑损伤时间推断。  相似文献   
117.
118.
119.
120.
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