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   13517篇
  免费   411篇
各国政治   612篇
工人农民   555篇
世界政治   961篇
外交国际关系   563篇
法律   7774篇
中国共产党   35篇
中国政治   148篇
政治理论   3105篇
综合类   175篇
  2021年   94篇
  2020年   207篇
  2019年   189篇
  2018年   301篇
  2017年   359篇
  2016年   395篇
  2015年   299篇
  2014年   313篇
  2013年   1427篇
  2012年   323篇
  2011年   379篇
  2010年   298篇
  2009年   399篇
  2008年   480篇
  2007年   483篇
  2006年   428篇
  2005年   406篇
  2004年   396篇
  2003年   327篇
  2002年   331篇
  2001年   423篇
  2000年   387篇
  1999年   325篇
  1998年   215篇
  1997年   168篇
  1996年   183篇
  1995年   168篇
  1994年   176篇
  1993年   167篇
  1992年   227篇
  1991年   296篇
  1990年   237篇
  1989年   239篇
  1988年   253篇
  1987年   237篇
  1986年   267篇
  1985年   205篇
  1984年   186篇
  1983年   187篇
  1982年   131篇
  1981年   141篇
  1980年   126篇
  1979年   119篇
  1978年   107篇
  1977年   91篇
  1976年   79篇
  1975年   71篇
  1974年   84篇
  1973年   85篇
  1971年   55篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
In the early 1970s, Grand Canyon National Park intended to designate its land to “Wilderness,” including the controversial Colorado River corridor. However, by the end of the 1970s the potential for Wilderness designation was off the table, and would never seriously return for genuine consideration. Using Schattschneider's model of conflict, we explain how the organization of this conflict privileges the “causal story” of Wilderness opponents, and therefore why the canyon is not designated. It is our contention that members of Congress will not stand forward to support Wilderness designations without simultaneously providing benefits for extractive land use because (1) congressional representatives are more penalized for supporting than opposing Wilderness designations, (2) Wilderness advocacy groups do not pressure congressional delegates as firmly as opposition groups, and (3) key local congressional members are not likely to see Wilderness as a salient issue worth the risk of negative exposure. If these findings hold, the implication is that we may have reached the end of significant Wilderness designations in highly visible areas, unless critical aspects in land use conflict change.  相似文献   
13.
14.
15.
16.
17.
18.
19.
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   
20.
Unwanted sexual attention (UWSA) encompasses unsolicited verbal comments, gestures, stares, and other noncontact behaviors made regarding one's sexuality and physical appearance. The present study examined the correlates and impact of such UWSA perpetrated toward girls by family members. The first objective of the study was to explore whether family climate is associated with intrafamilial UWSA. This included looking at three types of dysfunctional parenting styles (unaffectionate, unavailable, and patriarchal) as well as exploring the co-occurrence of UWSA by adult and child relatives. The second objective was to then measure the impact of such intrafamilial UWSA on childhood emotional health, after controlling for parenting style and the experience of more traditional forms of child sexual abuse (CSA). Of the 296 university women (mean age = 19) who participated in the study, 70% (N = 206) reported UWSA from a family member prior to age 18. Whereas each dysfunctional parenting style was related to presence of UWSA, a simultaneous multiple regression analysis indicated that two of the parenting styles, patriarchal and parental unavailability, also predicted frequency of nonphysical UWSA within the family. Presence of UWSA from a child relative was significantly correlated with presence of UWSA from an adult relative. Additionally, a hierarchical multiple regression, entering the three parenting styles simultaneously in the first step, childhood sexual abuse in the second step, and familial UWSA in the last step, indicated that the frequency of UWSA by family members significantly predicted poorer childhood mental health when controlling for the other variables. Overall, results indicate that while the specific parenting styles which co-occur with UWSA may be detrimental in their own right, the impact of UWSA on girls appears to be above and beyond that of either parenting styles or CSA. Clinical implications are discussed.  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