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   21699篇
  免费   886篇
  国内免费   10篇
  22595篇
  2020年   209篇
  2019年   243篇
  2018年   388篇
  2017年   336篇
  2016年   377篇
  2015年   288篇
  2014年   345篇
  2013年   1589篇
  2012年   655篇
  2011年   625篇
  2010年   398篇
  2009年   391篇
  2008年   554篇
  2007年   600篇
  2006年   510篇
  2005年   506篇
  2004年   445篇
  2003年   393篇
  2002年   434篇
  2001年   874篇
  2000年   857篇
  1999年   603篇
  1998年   237篇
  1997年   219篇
  1996年   226篇
  1992年   480篇
  1991年   468篇
  1990年   476篇
  1989年   407篇
  1988年   374篇
  1987年   379篇
  1986年   364篇
  1985年   363篇
  1984年   335篇
  1983年   285篇
  1982年   201篇
  1981年   188篇
  1979年   315篇
  1978年   239篇
  1977年   209篇
  1975年   254篇
  1974年   321篇
  1973年   332篇
  1972年   252篇
  1971年   248篇
  1970年   228篇
  1969年   250篇
  1968年   312篇
  1967年   269篇
  1966年   243篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
171.
172.
This paper demonstrates a method of transferring research data from a remote clinic to a large university mainframe for data manipulation and statistical analysis. Data collected by an Apple //e computer were transferred to an IBM 3031 mainframe by sending data files to an IBM PC by telephone modem or by direct hardwire connection to the PC. The IMB PC performed data-formatting routines and then uploaded the files to the mainframe for storage. Advantages and disadvantages of sending data over telephone lines via a modem are discussed.  相似文献   
173.
Single-subject statistics were used to analyze physiological data [electromyographic (EMG) temperature] recorded from two patients receiving computer-assisted biofeedback treatment in a clinic. When the data were analyzed by an ANOVA method or a regression technique, the results demonstrated that both patients learned to significantly reduce EMG levels. The rationale of using single-subject statistics is discussed, and the applicability of the statistical technique to the clinic population is illustrated.  相似文献   
174.
An electronic spreadsheet simulator can be used to enable students to conduct simulated microelectrode recording experiments. In addition, it can be used both to let students explore the operation of models of hypothetical neural networks and to let them design and develop their own neural models.  相似文献   
175.
The synchronous paradigm is a model of families whose members remain uninvolved and disconnected from each other yet somehow maintain relatively unvarying or even rigid patterns of behavior. In the synchronous paradigm, calm agreement and harmonious unity of action are valued above all. The concept of synchronous operation was first formulated by Constantine to solve certain theoretical problems growing out of the work of Kantor and Lehr. The theory has been elaborated upon through linkages established with other clinical and theoretical models of family dysfunction. Clinical experience in treating synchronous families has now contributed more detailed and practical understanding. Clinically, disabled synchronous families may present as bland, boring, or even death-like. They may have considerable difficulty accommodating to necessary developmental changes or to the demands of life crises, employing a variety of strategies to maintain the appearance of synchrony at the expense of adaptation. Their ability to ignore change and to absorb interventions can tax the abilities of even the most creative and energetic therapist. On the other hand, the quiet efficiency of the family and the social sensitivity of its members can be strong assets. Awareness of their strengths and special vulnerabilities can help the family therapist work more effectively with synchronous families.  相似文献   
176.
177.
178.
We evaluated a procedure for identifying potential reinforcers with profoundly retarded individuals. In Experiment 1, six persons were repeatedly exposed to 16 stimuli, and approach behaviors to each stimulus were used to identify preferred and nonpreferred stimuli. In Experiment 2, we examined the reinforcing properties of preferred and nonpreferred stimuli by delivering them contingently on the occurrence of arbitrarily selected responses. Results revealed that the preferred stimulus conditions typically produced higher rates of responding than did either the baseline or the nonpreferred stimulus conditions, suggesting that the procedure can be used to assess reinforcer value for individuals with limited behavioral repertoires.  相似文献   
179.
N. T. Feather 《Sex roles》1985,12(5-6):491-500
A study involving 197 university undergraduates (83 males, 114 females) tested the hypothesis that depressive symptoms assessed by the short form of the Beck Depression Inventory (BDI) would be negatively related to masculinity (M) scores from the Personal Attributes Questionnaire (PAQ) but unrelated to femininity scores (F). It was also hypothesized that the negative relationship between masculinity and self-reports of depressive symptoms may be due to shared variance in self-esteem. The results supported predictions. In particular, the negative relationship linking masculinity to depressive symptoms disappeared when the effects of self-esteem were partialed out. Results are discussed in terms of the thesis that self-esteem may reflect in part the dominant masculine values of Western-type cultures and that manifestations of psychological ill health may occur when there is reduced opportunity to engage in behaviors that reflect these values.  相似文献   
180.
Fagot  Beverly I.  Hagan  Richard 《Sex roles》1985,12(3-4):341-351
Sex Roles - Forty-eight toddler boys and girls, 18 to 36 months of age, were observed in play groups. The assertive acts of each child and the responses of peers and teachers were recorded. The...  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