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   80463篇
  免费   3305篇
  国内免费   37篇
  2020年   901篇
  2019年   1102篇
  2018年   1563篇
  2017年   1633篇
  2016年   1650篇
  2015年   1201篇
  2014年   1411篇
  2013年   6797篇
  2012年   2599篇
  2011年   2692篇
  2010年   1666篇
  2009年   1678篇
  2008年   2366篇
  2007年   2274篇
  2006年   2105篇
  2005年   1771篇
  2004年   1752篇
  2003年   1726篇
  2002年   1619篇
  2001年   2734篇
  2000年   2608篇
  1999年   1929篇
  1998年   919篇
  1997年   767篇
  1996年   841篇
  1995年   761篇
  1994年   763篇
  1993年   743篇
  1992年   1616篇
  1991年   1507篇
  1990年   1482篇
  1989年   1399篇
  1988年   1374篇
  1987年   1298篇
  1986年   1261篇
  1985年   1361篇
  1984年   1094篇
  1983年   918篇
  1979年   1118篇
  1978年   838篇
  1977年   731篇
  1975年   936篇
  1974年   1026篇
  1973年   1095篇
  1972年   910篇
  1971年   816篇
  1969年   739篇
  1968年   929篇
  1967年   798篇
  1966年   831篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
861.
In a previous essay I criticized Engelhardt's libertarian conception of justice, which grounds the view that society's obligation to assure access to adequate health care for all is a matter of beneficence [1]. Beneficence fails to capture the moral stringency associated with many claims for access to health care. In the present paper I argue that these claims are really matters of justice proper, where justice is conceived along moderate egalitarian lines, such as those suggested by Rawls and Daniels, rather than strong egalitarian lines. Further, given the empirical complexity associated with the distribution of contemporary health care, I argue that what we really need to address the relevant policy issues adequately is a theory of health care justice, as opposed to an all-purpose conception of justice. Daniels has made an important start toward that goal, though there are some large policy areas which I discuss that his account of health care justice does not really speak to. Finally, practical matters of health care justice really need to be addressed in a ‘non-ideal’ mode, a framework in which philosophers have done little.  相似文献   
862.
The sentence verification technique (SVT), developed by Royer, Hastings, and Hook (1979), provides developmental and educational researchers with an alternative way of assessing text comprehension based on all of the information contained in a passage. Students must decide if test sentences have the same meaning as sentences that appeared in an original passage. The program described here automates the more laborious aspects of constructing SVT tests. The user must create a passage using a word processor. The program will prompt the user for information as needed. Finally, printable text files (SVT test and answer key) are generated. The program is written in BASIC for IBM and IBM-compatible computers.  相似文献   
863.
864.
In this study, the authors analyzed demographic data on 403 Oklahoma inmates who went through the Regimented Inmate Discipline Program in 1984–1985. Also, a sample of the inmates was interviewed to identify the most supportive components of the program.  相似文献   
865.
The literature reports a number of reasons why abuse of people with mental retardation occurs. These causes of abusive behavior can be divided into three categories: organizational variables, staff characteristics, and client characteristics. The author examines each of the variables and presents recommendations for reducing their contributions to abusive behavior.  相似文献   
866.
This study demonstrated procedures to promote the acquisition and transfer of stimulus control of an age-appropriate exercise skill. Three young adults diagnosed as mentally handicapped in a residential setting were taught a commercial dancercise routine during individual training sessions using a package of instructional procedures. A combination of a multiple baseline across subjects and a multiple baseline across response groups design showed that skill acquisition occurred only after each subject received training, and that performance did not generalize across exercise response groups. Training progressively incorporated more participants, new teachers, and new settings. Ultimately, subjects performed in a community dancercise class attended by 100 nonhandicapped persons.  相似文献   
867.
Discrimination of facial expressions of emotion by depressed subjects   总被引:2,自引:0,他引:2  
A frequent complaint of depressed people concerns their poor interpersonal relationships. Yet, although nonverbal cues are considered of primary importance in interpersonal communication, the major theories of depression focus little attention on nonverbal social perception. The present study investigated the ability of depressed, disturbed control, and normal American adults to make rapid discriminations of facial emotion. We predicted and found that depressed subjects were slower than normal subjects in facial emotion discrimination but were not slower in word category discrimination. These findings suggest that current theories of depression may need to address difficulties with nonverbal information processing. There were also no significant differences between depressed and disturbed control subjects, suggesting that the unique social-behavioral consequences of depression have yet to be identified.  相似文献   
868.
This study focused on the relations between performance on a three-choice probability-learning task and conceptions of probability as outlined by Piaget concerning mixture, normal distribution, random selection, odds estimation, and permutations. The probability-learning task and four Piagetian tasks were administered randomly to 100 male and 100 female, middle SES, average IQ children in three age groups (5 to 6, 8 to 9, and 11 to 12 years old) from different schools. Half the children were from Middle Eastern backgrounds, and half were from European or American backgrounds. As predicted, developmental level of probability thinking was related to performance on the probability-learning task. The more advanced the child's probability thinking, the higher his or her level of maximization and hypothesis formulation and testing and the lower his or her level of systematically patterned responses. The results suggest that the probability-learning and Piagetian tasks assess similar cognitive skills and that performance on the probability-learning task reflects a variety of probability concepts.  相似文献   
869.
A sample of physician-referred chronic insomniacs was randomly allocated to either progressive relaxation, stimulus control, paradoxical intention, placebo or no treatment conditions. Treatment process and outcome were investigated in terms of mean and standard deviation (night to night variability) measures of sleep pattern and sleep quality. Only active treatments were associated with significant improvement, but the nature of treatment gains varied. In particular, stimulus control improved sleep pattern, whereas relaxation affected perception of sleep quality. All improvements were maintained at 17 month follow-up. Results are discussed with reference to previous research and guidelines are given for clinical practice.  相似文献   
870.
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