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   74457篇
  免费   3369篇
各国政治   4825篇
工人农民   3060篇
世界政治   6453篇
外交国际关系   4102篇
法律   35793篇
中国共产党   13篇
中国政治   787篇
政治理论   21837篇
综合类   956篇
  2021年   456篇
  2020年   1239篇
  2019年   1606篇
  2018年   1846篇
  2017年   2141篇
  2016年   2356篇
  2015年   1928篇
  2014年   2188篇
  2013年   11079篇
  2012年   1808篇
  2011年   1928篇
  2010年   1950篇
  2009年   2201篇
  2008年   1983篇
  2007年   1989篇
  2006年   2112篇
  2005年   1991篇
  2004年   1865篇
  2003年   1630篇
  2002年   1718篇
  2001年   1890篇
  2000年   1646篇
  1999年   1439篇
  1998年   1189篇
  1997年   1039篇
  1996年   1021篇
  1995年   1000篇
  1994年   985篇
  1993年   1012篇
  1992年   1073篇
  1991年   1106篇
  1990年   1039篇
  1989年   1068篇
  1988年   1066篇
  1987年   1061篇
  1986年   1093篇
  1985年   1119篇
  1984年   1008篇
  1983年   1026篇
  1982年   924篇
  1981年   864篇
  1980年   689篇
  1979年   755篇
  1978年   611篇
  1977年   546篇
  1976年   499篇
  1975年   426篇
  1974年   457篇
  1973年   444篇
  1972年   382篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
381.
382.
383.
384.
The study presents a method for the demonstration of esophageal varices at autopsy by gastroesophageal phlebography. The veins visible on the radiographs were controlled and evaluated by studying the gross appearance of sections of the esophagus at the level of the varicose veins and by histologic examination of the sections. The phlebography was found to be useful in estimating the varicose and normal veins of the esophagus. The study indicates further that the degree of varicosity is not always proportional to the severity of cirrhosis of the liver, and there may be varicose esophageal veins in patients with liver or heart disorders without hepatic cirrhosis.  相似文献   
385.
386.
387.
388.
This study examined the nature of police response to domestic violence incidents with a focus on the identification of areas of police intervention that female victims of domestic abuse find “most” helpful and “least” helpful. The first part of the study was based on the analysis of a random sample of incident reports of domestic abuse cases recorded in 2000 and 2001. These reports were examined to obtain information about the characteristics of domestic abuse victims and summary information about the incidents of domestic abuse offenses. The second stage of the research study involved a telephone survey conducted with a random sample of fifty female domestic abuse victims who called the police. The study examined female victims' perceptions of how the police responded to the domestic abuse incidents, how helpful or not so helpful victims found the police to be when they responded to their calls, and how their cases were handled by the legal system.  相似文献   
389.
390.
The purpose of this study was to examine the relationship between job demands, job resources, and burnout, and to examine if burnout could predict both work and health-related outcomes among police officers. The participants were 223 Norwegian police officers, and data were collected using a questionnaire. The study was part of a national survey of both health care and non-health care professions. The overall level of burnout was low among police officers compared to other occupational groups tested in Norway. Both job demands and job resources were related to burnout, especially work-family pressure was an important predictor for all of the three burnout dimensions. Burnout predicted individual outcomes, such as psychosomatic complaints and satisfaction with life, as well as work outcomes, such as job satisfaction, intention to quit, and organizational commitment. Suggestions for potential interventions to reduce burnout and negative individual and organizational consequences are presented.  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