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   67980篇
  免费   3290篇
各国政治   4509篇
工人农民   2895篇
世界政治   6056篇
外交国际关系   3820篇
法律   31597篇
中国共产党   11篇
中国政治   771篇
政治理论   20669篇
综合类   942篇
  2021年   412篇
  2020年   1165篇
  2019年   1522篇
  2018年   1686篇
  2017年   1957篇
  2016年   2183篇
  2015年   1834篇
  2014年   2109篇
  2013年   10533篇
  2012年   1600篇
  2011年   1714篇
  2010年   1815篇
  2009年   2073篇
  2008年   1738篇
  2007年   1711篇
  2006年   1875篇
  2005年   1783篇
  2004年   1662篇
  2003年   1481篇
  2002年   1498篇
  2001年   1548篇
  2000年   1360篇
  1999年   1240篇
  1998年   1114篇
  1997年   977篇
  1996年   960篇
  1995年   918篇
  1994年   913篇
  1993年   936篇
  1992年   939篇
  1991年   969篇
  1990年   909篇
  1989年   949篇
  1988年   946篇
  1987年   979篇
  1986年   946篇
  1985年   1017篇
  1984年   910篇
  1983年   977篇
  1982年   877篇
  1981年   828篇
  1980年   654篇
  1979年   675篇
  1978年   594篇
  1977年   523篇
  1976年   486篇
  1975年   400篇
  1974年   396篇
  1973年   409篇
  1972年   359篇
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
111.
112.
Fibres used in forensic casework suffer from a disadvantage common to other forms of trace evidence--it is not possible to state with absolute certainty that they originate from a specific source. Target fibre studies, population studies and research on 'blocks of colour' have effectively demonstrated the polymorphism of textile fibres (particularly man-made ones) and have shown that when a fibre is believed to have a specific putative source, the chance that it has originated from a different source purely by coincidence is extremely remote. A study by Houck MM (Houck MM, Inter-comparison of unrelated fibre evidence. Forensic Science International 2003; 135: 146-149) has shown that no coincidental matching fibres were recovered from items of clothing examined in 20 unrelated crimes. The study involved over two million comparisons. This work goes a step further, and using the example of blue polyester fibres shows that even within a very narrow segment of the whole general fibre population, many examples of a specific colour/type of man-made fibre taken from random sources can be compared and the chance of any two being the same is very low. These studies should help to show the specificity and value of transferred fibres in providing forensic evidence.  相似文献   
113.
114.
115.
Book Reviews in This Article:
Robert Jay Lifton, The Nazi Doctors: Medical Killing and the Psychology of Genocide.
Eric Stovcr and Elena O. Nightingak, eds., The Breaking of Bodies and Minds: Torture, Psychiatric Abuse and the Health Professions.
Elliot S. Valenstein, Great and Desperate Cures: The Rise and Decline of Psychosurgery and Other Related Treatments for Mental Illness.  相似文献   
116.
117.
Abstract This study examines changes in legislative support for the governor's legislative agenda in Georgia during the governor's first term in office (1991–94). I analyze the factors that led legislators to support the governor's agenda, as well as how the level of support changed between election years and off‐years. I use multivariate OLS models of gubernatorial support to determine how support varied (1) between the parties, (2) between factions within parties, and (3) over time. I find that there was wide variation in support among factions in the majority party and that support varied widely between election years and off‐years.  相似文献   
118.
119.
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   
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