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   37200篇
  免费   1386篇
  国内免费   11篇
  2018年   569篇
  2017年   546篇
  2016年   618篇
  2015年   439篇
  2014年   539篇
  2013年   3512篇
  2012年   912篇
  2011年   946篇
  2010年   600篇
  2009年   571篇
  2008年   900篇
  2007年   797篇
  2006年   740篇
  2005年   639篇
  2004年   611篇
  2003年   629篇
  2002年   619篇
  2001年   1186篇
  2000年   1145篇
  1999年   874篇
  1996年   499篇
  1995年   478篇
  1994年   467篇
  1993年   439篇
  1992年   912篇
  1991年   807篇
  1990年   809篇
  1989年   711篇
  1988年   724篇
  1987年   700篇
  1986年   695篇
  1985年   690篇
  1984年   619篇
  1983年   505篇
  1982年   396篇
  1981年   418篇
  1980年   396篇
  1979年   574篇
  1978年   438篇
  1976年   396篇
  1975年   541篇
  1974年   524篇
  1973年   595篇
  1972年   561篇
  1971年   506篇
  1970年   449篇
  1969年   428篇
  1968年   550篇
  1967年   467篇
  1966年   446篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
932.
The idea of a psychopathology of fate or what had come to be called a fate neurosis has failed to retain any established place in the structure of psychoanalytic thought. The clinical observations and theoretical formulations, to which the idea of a fate neurosis answered, have been subsumed in the course of things by more fundamental and systematic conceptualizations. A review of Helene Deutsch's (1930) paper, "Hysterical Fate Neurosis," is therefore bound to be largely an excursion into an area of intellectual history. However, such history never fails to shed light on certain ongoing clinical and theoretical problems that may have lost too much to current developments in psychoanalytic thought. It is with this historical purpose that the present study of Deutsch's classic paper on a fate neurosis is undertaken.  相似文献   
933.
Distraction and coping with pain   总被引:7,自引:0,他引:7  
  相似文献   
934.
The question of left hemisphere dysfunction in infantile autism   总被引:3,自引:0,他引:3  
  相似文献   
935.
Is there a cell-biological alphabet for simple forms of learning?   总被引:5,自引:0,他引:5  
  相似文献   
936.
This paper proposes test statistics based on the likelihood ratio principle for testing equality of proportions in correlated data with additional incomplete samples. Powers of these tests are compared through Monte Carlo simulation with those of tests proposed recently by Ekbohm (based on an unbiased estimator) and Campbell (based on a Pearson-Chi-squared type statistic). Even though tests based on the maximum likelihood principle are theoretically expected to be superior to others, at least asymptotically, results from our simulations show that the gain in power could only be slight.  相似文献   
937.
The effects of tobacco smoking on responses to electrical stimulation were studied according to a Method of Limits (ML) threshold analysis and a Sensory Decision Theory (SDT) analysis. For the ML procedure, Detection Threshold (DT), Pain Threshold (PT) and Tolerance Level (TL) measures were obtained. For the SDT procedure, nonparametric estimates of capacity to discriminate between stimulus intensities (P(A)) and response criterion (B) were calculated. There was no main effect of tobacco smoking on responses to electrical stimulation. Males had consistently higher ML thresholds than females in both the NS and S condition. Males also tended to increase in DT and PT after smoking. From a comparison between the effects of smoking on ML and SDT measures it was suggested that PT is related mainly to sensory factors and TL to response factors.  相似文献   
938.
Asymmetric neural control systems in human self-regulation   总被引:15,自引:0,他引:15  
  相似文献   
939.
The paper contains a detailed study of the St. Pauls' riots of April 1980. Particular attention is paid to the limits of participation in the event and the limits of crowd action. It is argued that these limits show clear social form and cannot be explained in terms of the individualistic theories that dominate crowd psychology. Instead a model of crowd behaviour based on the social identity model is advanced to account for the observations. It is concluded that crowd behaviour is more sophisticated and creative than hitherto allowed and that the neglect of this field should be remedied.  相似文献   
940.
Buchanan examines, and finds inadequate, several philosophical approaches to justifying and specifying the content of a universal right to a decent minimum of health care: utilitarian arguments, Rawlsian ideal contract arguments, and Norman Daniels' equality of opportunity argument. Also rejecting the libertarian hypothesis that there is no right to a decent minimum of care, he contends that the claim that society should guarantee certain health care services can be supported by a pluralistic approach encompassing special right-claims, harm prevention, prudential arguments emphasizing public health benefits, and beneficence.  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