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   24223篇
  免费   366篇
  国内免费   14篇
教育   17259篇
科学研究   1953篇
各国文化   255篇
体育   2450篇
综合类   7篇
文化理论   246篇
信息传播   2433篇
  2021年   261篇
  2020年   398篇
  2019年   632篇
  2018年   839篇
  2017年   784篇
  2016年   775篇
  2015年   451篇
  2014年   602篇
  2013年   4494篇
  2012年   514篇
  2011年   563篇
  2010年   439篇
  2009年   465篇
  2008年   497篇
  2007年   461篇
  2006年   438篇
  2005年   366篇
  2004年   403篇
  2003年   320篇
  2002年   336篇
  2001年   471篇
  2000年   517篇
  1999年   440篇
  1998年   264篇
  1997年   258篇
  1996年   314篇
  1995年   256篇
  1994年   263篇
  1993年   207篇
  1992年   338篇
  1991年   354篇
  1990年   324篇
  1989年   350篇
  1988年   311篇
  1987年   314篇
  1986年   309篇
  1985年   351篇
  1984年   286篇
  1983年   274篇
  1982年   225篇
  1981年   223篇
  1980年   233篇
  1979年   335篇
  1978年   236篇
  1977年   212篇
  1976年   186篇
  1975年   166篇
  1974年   172篇
  1973年   173篇
  1971年   151篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
941.
The behavior of narcotics-addicted and nonaddicted newborns on the first 2 days of life was assessed with the Brazelton Neonatal Behavioral Assessment Scale. In addition to classic signs of narcotics abstinence, addicted infants were less able to be maintained in an alert state and less able to orient to auditory and visual stimuli. These deficits were especially pronounced at 48 hours of age. Addicted infants were as capable of self-quieting and responding to soothing intervention as normal neonates, although they were substantially more irritable. These characteristics and addicted infants' greater resistance to cuddling are discussed in terms of their potential impact on early infant-care-giver interaction.  相似文献   
942.
This paper proposes a framework for understanding fatal maltreatment by mothers based on an in-depth study of incarcerated women. Despite its extreme outcome, fatal maltreatment is not homogeneous. While the specifics of each case varied, the circumstances leading to the fatality followed a similar progression. The framework is characterized by a recurrent pattern of abuse culminating in the fatality. All of the women had abused the deceased child prior to the fatality. The women provided warning signals to professionals and to members of their personal networks (kin, friends, neighbors) by alerting them to the abusive incidents. The fatal incident was not a one-time assault, but the exit point of a continuing pattern of abusive interactions that was maintained by the woman's ability to explain, rationalize, and minimize the abuse to herself and to her network. Future research efforts must be directed beyond the fatal incident to the circumstances leading up to it. Intervention and education must be aimed beyond biological parents to the wider network and community.  相似文献   
943.
Nonprofessional library support staff traditionally hold what are considered to be low-paying, nonchallenging positions. These negative factors make retaining creative and productive employees difficult. This article outlines the approach taken at the Medical College of Georgia's Robert B. Greenblatt, M.D. Library to devise a structure of library staff positions that becomes progressively more demanding. A new nine-level Library Staff Classification Plan resulted. This plan also enables and encourages employees to acquire more skills and to accept more responsibility in order to qualify for higher-level library positions or to advance their present position to receive comparable rewards. The plan expresses the level of responsibilities expected, the employee qualifications desired, and lists representative duties across the spectrum of typical library tasks.  相似文献   
944.
945.
竞技武术近年来发展迅速。本文通过对相关文献资料的查阅,对竞技武术功能的积极方面和消极方面进行了分析。结果表明,竞技武术必须贯彻“以人为本”的理念才能持续健康地发展。  相似文献   
946.
947.
948.
    
  相似文献   
949.
950.
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