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   1522篇
  免费   46篇
各国政治   62篇
工人农民   85篇
世界政治   180篇
外交国际关系   84篇
法律   751篇
中国政治   15篇
政治理论   387篇
综合类   4篇
  2022年   7篇
  2021年   14篇
  2020年   30篇
  2019年   42篇
  2018年   53篇
  2017年   69篇
  2016年   58篇
  2015年   38篇
  2014年   41篇
  2013年   219篇
  2012年   48篇
  2011年   56篇
  2010年   34篇
  2009年   31篇
  2008年   45篇
  2007年   44篇
  2006年   62篇
  2005年   55篇
  2004年   35篇
  2003年   48篇
  2002年   41篇
  2001年   25篇
  2000年   28篇
  1999年   15篇
  1998年   32篇
  1997年   26篇
  1996年   13篇
  1995年   20篇
  1994年   20篇
  1993年   26篇
  1992年   24篇
  1991年   10篇
  1990年   18篇
  1989年   22篇
  1988年   18篇
  1987年   20篇
  1986年   12篇
  1985年   15篇
  1984年   13篇
  1983年   9篇
  1982年   14篇
  1981年   14篇
  1980年   9篇
  1979年   7篇
  1978年   7篇
  1977年   10篇
  1976年   10篇
  1973年   10篇
  1967年   6篇
  1965年   8篇
排序方式: 共有1568条查询结果,搜索用时 328 毫秒
181.
The purpose of this study was to specify the effects of alcohol on the performance of ship operators as a contribution to the development of new strategies against the risks of alcohol in water traffic. The nautical performance of 21 captains before and after alcohol consumption was assessed on a ship piloting simulator. The simulated scenarios represented passages of a container vessel through the German Bight. Performance was examined by nautical instructors according to standardised protocols. Mean (S.D.) blood alcohol concentrations (BACs) of 0.100 (0.024) g/dl before and 0.100 (0.017) g/dl after the performance trial resulted in striking effects on the nautical performance. The categories most severely affected were foresight and analysis of situation (impairment in 18 of 21 cases), concentration (impairment in 16 of 21 cases), accurateness, risk disposition and navigation (impairment in 15 of 21 cases). Chart work, preparation and communication were impaired in 12, 11 and 10 of 21 cases, respectively. None of the participants were capable to operate the simulated ship with an adequate safety after ingestion of alcohol. From these findings, and in consideration of the well-established impairment of a multitude of mental and physical functions by alcohol, it can be concluded that even low BACs bear high risks in water traffic, a concentration above 0.1 g/dl will hinder a sufficiently safe performance of ship operators. This should be considered in alcohol education and legislation.  相似文献   
182.
183.
184.
185.
186.
187.
This reflection on major developments in the past, present, and future of the wider field of violence and trauma is a personal (and probably biased) sampling of what the authors hold to be important. The authors reviewed advances for victims and perpetrators of violence separately. For victims, the authors note that empirical research has established the potential traumatic impact of violence as well as various predictors of what makes persons vulnerable to adverse psychological consequences. The authors also note that the definitions of violence and trauma have evolved to include such behavioral patterns as stalking. Finally, encouraging evidence regarding the efficacy of exposure-based treatments for victims of violence is reviewed, as well as discouraging evidence regarding the efficacy of single-session debriefing following trauma. For the perpetrators, the importance of individual assessment in planning interventions is underscored, and advances in explicit and implicit assessment techniques are discussed.  相似文献   
188.
189.
190.
Sexual misconduct has emerged as a widespread problem throughout the criminal justice system as indicated by law enforcement officer sexual assault incidents in various cities and the findings of the recent National Prison Rape Elimination Act Research Commission. Through multivariate statistical analysis of data from two Department of Defense-wide surveys (2002 and 2006), this paper examines the indicators and cofounders of sexism, sexual harassment, and sexual assault with attention to change during the study period. Findings inform a suggested anticipatory model for prevention and intervention in military settings that, based on shared characteristics such as male dominance and authoritarian culture, provide an approximate reference context for criminal justice sexual misconduct best practices consideration.  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