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   12225篇
  免费   185篇
各国政治   429篇
工人农民   1162篇
世界政治   605篇
外交国际关系   502篇
法律   6398篇
中国政治   19篇
政治理论   3256篇
综合类   39篇
  2021年   23篇
  2020年   51篇
  2019年   58篇
  2018年   1349篇
  2017年   1293篇
  2016年   1138篇
  2015年   145篇
  2014年   92篇
  2013年   645篇
  2012年   296篇
  2011年   997篇
  2010年   1102篇
  2009年   688篇
  2008年   833篇
  2007年   802篇
  2006年   133篇
  2005年   182篇
  2004年   276篇
  2003年   248篇
  2002年   141篇
  2001年   72篇
  2000年   93篇
  1999年   72篇
  1998年   106篇
  1997年   87篇
  1996年   62篇
  1995年   101篇
  1994年   88篇
  1993年   69篇
  1992年   72篇
  1991年   56篇
  1990年   54篇
  1989年   64篇
  1988年   64篇
  1987年   77篇
  1986年   62篇
  1985年   77篇
  1984年   71篇
  1983年   57篇
  1982年   59篇
  1981年   53篇
  1980年   39篇
  1979年   48篇
  1978年   44篇
  1977年   42篇
  1976年   26篇
  1975年   23篇
  1974年   23篇
  1973年   24篇
  1969年   20篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
In this study, we examined the role of dispositional optimism in mediating distress among students who experienced traumatic events, including child physical abuse, emotional abuse, and sexual abuse. Participants included 199 undergraduate and graduate students (aged 18–63 years) from a private university in Oregon. In this study, dispositional optimism partially mediated distress among individuals who had experienced child physical abuse and child emotional abuse; participants with higher levels of optimism had lower levels of distress. In addition, dispositional optimism fully mediated distress among individuals who had experienced traumatic events such as rape, assault, and fire; participants with higher levels of optimism had lower levels of distress. Contrary to prediction, the experience of child sexual abuse was not associated with distress. Clinical implications of these results are addressed.  相似文献   
993.
994.
995.
A comparison of 20 years of aircraft production in Europe and America. U.S. cost increases in the system acquisition process have resulted in large part from unforeseen (sometimes unforseeable) engineering difficulties in the development phase, and from substantial production commitment before development was complete. Common European strategy completed basic development before beginning production and demonstrated utility through prototypes, using early proof-testing of engines, electronics and airframes. An alternative acquisition strategy to that used in the 1960s in the United States is recommended for the next decade: (1) incremental acquisition, based on a sequence of decision points and a succession of development and production phases; and (2) pronounced austerity in early development phases. These changes would result in lessened cost growth and lower U.S. acquisition costs, as well as in improved predictability of schedule and system performance outcomes.The following statement was prepared for the Committee on Armed Services, United States Senate, and was presented on December 7, 1971.  相似文献   
996.
What We Have Learned About Teaching Multiparty Negotiation   总被引:1,自引:1,他引:0  
This article grows out of our experience teaching an advanced course on multiparty negotiation. The main question underlying the course is: “How can experts in two‐party negotiations make themselves effective multiparty negotiators?” In this article, we describe what and how we taught, what we think worked, and what we decided to change after the first year of teaching.  相似文献   
997.
998.
We consider two important notes on optimal law enforcement with corruption. First, we analyze the role of asymmetric information on the emergence of collusion between criminals and enforcers. Second, our paper proposes that the optimal criminal sanction for the underlying offense is not necessarily maximal. We achieve this result by coupling the criminal sanction for the underlying offense with a criminal sanction for corruption, both imposed on offenders. A higher criminal sanction for the underlying offense implies that the government must spend more resources to detect and punish corruption (since the likelihood of collusion increases). Thus, the government could reduce this sanction, save on detection, and increase the criminal sanction for corruption (in order to offset the negative effect on deterrence). We are grateful to Mitch Polinsky and two anonymous referees for helpful suggestions. The usual disclaimers apply.  相似文献   
999.
This study examines whether or not using a person as a standard/comparison improves the ability of a child witness to provide more accurate detail about a previously observed person. Study participants included 135 children who observed a male stranger and were then later asked to describe and answer various questions about that person using a third-person standard/comparison. Despite the fact that one-half of participants were exposed to a standard/comparison, neither participants’ gender or exposure to the standard/comparison improved recollection outcomes. However, the gender of the standard/comparisons - especially where female - did have a significant effect on the recall ability of male participants.  相似文献   
1000.
Research into community corrections officers’ perceptions of the needs of ex-offenders has largely been overlooked. While some empirical research has emerged regarding federal parole officers’ perceptions, it is conceptually incomplete. A gap in the literature remains regarding the concordance or discordance between offenders and community corrections officers’ perceptions of offender needs and the opportunities for success upon release. Using a sample of community corrections officers in Seattle, Washington, this research examined officer perception of ex-offender needs, the value officers’ placed on the specific needs, and the opportunities available for offenders to meet their needs. Differences between officers emerged including the finding that female officers rated needs and challenges for offenders significantly different than male officers. Policy implications of the research are discussed. This research was made possible due to a grant award from the College of Arts and Sciences at Seattle University. This research was first presented at the 2005 Academy of Criminal Justice Sciences Conference in Chicago. We are grateful to Mac Pevey and Keven Bovenkamp from the Washington State Department of Corrections and Bill Corn and Tim McTighe from United States Probation and Pretrial Services for their support, assistance, and for making the study possible. A special thanks to our research assistant Tania Reyes who was instrumental in collecting the data for this investigation.  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