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   23413篇
  免费   979篇
  国内免费   11篇
  2020年   258篇
  2019年   310篇
  2018年   448篇
  2017年   470篇
  2016年   499篇
  2015年   397篇
  2014年   399篇
  2013年   1976篇
  2012年   698篇
  2011年   740篇
  2010年   443篇
  2009年   417篇
  2008年   593篇
  2007年   623篇
  2006年   523篇
  2005年   487篇
  2004年   446篇
  2003年   453篇
  2002年   477篇
  2001年   776篇
  2000年   738篇
  1999年   556篇
  1998年   226篇
  1997年   204篇
  1996年   235篇
  1992年   449篇
  1991年   444篇
  1990年   431篇
  1989年   407篇
  1988年   423篇
  1987年   379篇
  1986年   390篇
  1985年   393篇
  1984年   313篇
  1983年   281篇
  1982年   209篇
  1981年   210篇
  1979年   349篇
  1978年   258篇
  1977年   214篇
  1975年   287篇
  1974年   357篇
  1973年   370篇
  1972年   290篇
  1971年   285篇
  1970年   282篇
  1969年   251篇
  1968年   349篇
  1967年   308篇
  1966年   287篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
221.
The study was designed to examine the influence of significant others (mothers, fathers, and male and female peers) on continuing involvement in sport by adolescent females. Survey data were collected from 376 girls using a forced-choice, self-administered questionnaire. Maintenance of involvement was measured by the proportion of possible years in which the respondents were involved in physical activity within each of three participation contexts (intramural, interschool, and community sport). Several indicators of significant other influence were used. The degree to which involvement in physical activity is maintained is positively related to the source, amount and type of influence received from significant others, and varied by the participation context. Overall, the socializing influence of significant others was able to account for 11% of the variance in intramural activity, 20% of the variance in interschool sport, and 10% of the variance in community-based activity.This study was funded by a grant from Fitness Canada.  相似文献   
222.
223.
224.
225.
Eleven subjects were asked to silently read slides of the letters “P” and “T,” and to view meaningless control slides similarly as they were presented visually. One-eighth-second electromyographic excerpts were sampled from the baseline and response periods. The data were then transformed into the frequency domain for inferential analyses. The mean power spectral frequencies for the response period were significantly lower than those for the base-line in the overall analysis. There were, however, no significant changes from baseline as a function of kind of stimulus (T, P, or Control) or muscle activated (lips or tongue). It was concluded that there was a generalized responding, not unique to the processing of the specific stimuli studied. Frequency analysis of EMG measures of covert behavior holds some promise of yielding unique information not available through traditional analysis procedures, but more sensitive methods than those used here would be required to demonstrate this.  相似文献   
226.
227.
Alcohol, probably the most popular mood-altering drug, has frightening consequences when abused. Genetic factors and sociocultural influences contribute to alcoholic behavior. Study of endocrines, neurotransmitters, and neuropeptides may reveal biological markers to help identify those at risk for alcoholism. Drinking patterns are often based on the expectation of alcohol's mood-altering quality. The focus of treatment has expanded to include not only drinking behavior but also emotional, social, and vocational adjustment. Controlled drinking has proved effective for some, so that complete abstinence is no longer the sole goal of therapy. Behavioral, martial, group and individual, outpatient and inpatient therapy, and drugs as adjuncts, all help some alcoholics, but none is a cure for all. Answers still lag behind questions but researchers have registered some advances that challenge therapists to enlarge therapeutic approaches to fit the multifaceted picture of alcoholism.  相似文献   
228.
229.
230.
The purpose of this work is to explore the phenomenon of negativism and the analyst's response to it during the course of analytic work with a patient in whom negativism is a central behavioral pattern. Melville's short story, "Bartleby the Scrivener," describing in telling detail the response of a sympathetic lawyer to profound and pervasive negativism in his legal scribe, is discussed as a literary analogy to the analyst-analysand dyad. Aspects of the concept of negativism within psychoanalysis are discussed. The potential usefulness of understanding certain unexpected countertransference responses to pervasive negativism is explored, as this is a relatively neglected area of psychoanalytic technique. A case is presented describing the analysis of a patient whose character, like Bartleby's, is a mixture of profound negativism along with schizoid, obsessional, and masochistic elements.  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