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   22281篇
  免费   1242篇
各国政治   905篇
工人农民   1006篇
世界政治   1564篇
外交国际关系   758篇
法律   14993篇
中国共产党   28篇
中国政治   171篇
政治理论   3960篇
综合类   138篇
  2021年   130篇
  2020年   484篇
  2019年   531篇
  2018年   679篇
  2017年   679篇
  2016年   749篇
  2015年   558篇
  2014年   632篇
  2013年   2296篇
  2012年   601篇
  2011年   651篇
  2010年   643篇
  2009年   692篇
  2008年   666篇
  2007年   647篇
  2006年   660篇
  2005年   550篇
  2004年   569篇
  2003年   459篇
  2002年   496篇
  2001年   907篇
  2000年   799篇
  1999年   618篇
  1998年   307篇
  1997年   241篇
  1996年   234篇
  1995年   238篇
  1994年   214篇
  1993年   208篇
  1992年   395篇
  1991年   418篇
  1990年   394篇
  1989年   379篇
  1988年   391篇
  1987年   367篇
  1986年   395篇
  1985年   394篇
  1984年   324篇
  1983年   301篇
  1982年   226篇
  1981年   219篇
  1980年   172篇
  1979年   279篇
  1978年   156篇
  1977年   116篇
  1975年   128篇
  1974年   166篇
  1973年   126篇
  1972年   110篇
  1971年   97篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
This article outlines the new regionalism movement and its metropolitanagenda, reviews federal efforts to promote new regionalism underISTEA and TEA–21, considers how the new federal policieschanged the role of metropolitan planning organizations (MPOs)in transportation planning by examining the MPO for the Louisvillemetropolis, and assesses the MPO process in Louisville. Thelocal decision of whether to build a new bridge across the OhioRiver was a major test of the enhanced MPO process. Federaltransportation policies enhanced regional coordination and cooperationin transportation planning in the Louisville metropolis resultingin a consensus plan to build two bridges across the Ohio River.However, the MPO process did not lead to the development ofa metropolitan-wide interest or perspective. Moreover, the newregionalist agenda was not advanced because sprawl was not afactor in the decision on whether and where to build the bridges.  相似文献   
72.
73.
74.
Most studies that consider the factors influencing the decision to leave an abusive relationship rely on retrospective, self-report data. In addition to the biased samples that are frequently obtained in such investigations, the methodological shortcomings of survey research limit its explanatory power, particularly when applied to such sensitive topics as family violence. This report introduces an alternative method for studying the decision to leave an abusive relationship. Forty-five men and 68 women were studied using an experimental computer game of an abuse-like relationship. The tendency to leave this relationship was measured under four differing conditions of severity and frequency of abuse. A logit analysis revealed that the frequency of abuse was more consequential to women's decisions to leave, while severity of abuse was more salient for men. In addition, the hypothesized model, including frequency of abuse, severity of abuse, and locus of control, fits well for women but not for men. The implications of these findings, as well as the validity and future application of experimental games, are discussed.  相似文献   
75.
76.
Comparison of a suspected biter's dental arches with the patterned injury of a bite mark is especially difficult when the bite occurs in an anatomic location with a small radius of curvature or with complex or compound curves. The authors present two case reports in which human skin was used as a template for the reproduction of a bite. In one case the victim's skin was used; in the other, the skin of a anatomically similar person was used. The use of inked dental casts, photography, and transparent overlays significantly reduced the errors common to analysis of bite marks in these highly curved areas.  相似文献   
77.
78.
In motorcycle accidents involving two riders, medicolegal identification of the driver is necessary when one or both riders die. It is particularly important in the latter case, because the survivor almost always insists that he or she was not driving. One characteristic injury that distinguishes the driver from the passenger is inguinal contusion-laceration (accompanied internally by pelvic fracture). This injury, caused by collision of the pelvis with the fuel tank, identifies the driver.  相似文献   
79.
80.
Retention of offender DNA samples serves an important quality assurance role for forensic DNA laboratories. Consistent with the principles of confidentiality underlying the establishment of the state and national DNA databases, safeguards are in place to protect the DNA samples from unauthorized use.  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