全文获取类型
收费全文 | 25731篇 |
免费 | 847篇 |
国内免费 | 12篇 |
专业分类
26590篇 |
出版年
2019年 | 245篇 |
2018年 | 297篇 |
2017年 | 336篇 |
2016年 | 381篇 |
2015年 | 298篇 |
2014年 | 327篇 |
2013年 | 1834篇 |
2012年 | 629篇 |
2011年 | 644篇 |
2010年 | 406篇 |
2009年 | 421篇 |
2008年 | 600篇 |
2007年 | 542篇 |
2006年 | 481篇 |
2005年 | 477篇 |
2004年 | 443篇 |
2003年 | 448篇 |
2002年 | 465篇 |
2001年 | 685篇 |
2000年 | 674篇 |
1999年 | 469篇 |
1998年 | 244篇 |
1992年 | 467篇 |
1991年 | 452篇 |
1990年 | 457篇 |
1989年 | 458篇 |
1988年 | 408篇 |
1987年 | 420篇 |
1986年 | 445篇 |
1985年 | 481篇 |
1984年 | 410篇 |
1983年 | 376篇 |
1982年 | 271篇 |
1981年 | 314篇 |
1980年 | 243篇 |
1979年 | 439篇 |
1978年 | 317篇 |
1977年 | 286篇 |
1976年 | 274篇 |
1975年 | 409篇 |
1974年 | 459篇 |
1973年 | 484篇 |
1972年 | 410篇 |
1971年 | 403篇 |
1970年 | 378篇 |
1969年 | 401篇 |
1968年 | 493篇 |
1967年 | 476篇 |
1966年 | 453篇 |
1958年 | 252篇 |
排序方式: 共有10000条查询结果,搜索用时 11 毫秒
921.
A comparison was made of the scores of 171 Japanese boys and 156 Japanese girls, and of 204 English boys and 165 English girls, on the Visual Aesthetic Sensitivity Test. Also compared were 145 male and 163 female Japanese students, with 38 male and 73 female English students. Japanese children had scores significantly higher than English children, while Japanese students had scores significantly lower than English students. There was little evidence of age increments in score for either group of children. Difficulty levels of the 42 item-pairs were very similar in the two cultures, as were internal (split-half) reliabilities. It is concluded that cultural differences between the two countries, as far as visual aesthetic appreciation is concerned, seem at best minimal. 相似文献
922.
THE DEVELOPMENT OF BEHAVIORAL OBSERVATION SCALES FOR APPRAISING THE PERFORMANCE OF FOREMEN 总被引:2,自引:0,他引:2
Behavioral observation scales (BOS) were developed for first line foremen. BOS are similar to behavioral expectation scales (BES) in that both are based on a job analysis procedure known as the critical incident technique. However, the BOS differ from BES in that, in developing BOS, (a) a group of individuals is observed and rated on a five-point scale as to the frequency with which they engage in the behavior described by each incident/statement, (b) a total score for each individual is determined by summing the observer's responses for each behavioral item, and (c) an item analysis (or factor analysis, depending upon the sample size) is conducted to select the most discriminating items. Those items with the highest correlations with the total score on a scale are retained to form one behavioral criterion or scale (BOS). 相似文献
923.
Four cases of brain-stem tumor were described, in which myokymias were electromyographically derived from the region of several cerebral nerves. An attempt is made to interpret the effects of twitching by reference to the electromyogram. Myokymias are a positive indication of organic brain stem damage. The use subtle techniques of electromyographic examination shows that this muscular hyperkinesis is not so infrequent a symptom as is generally believed. 相似文献
924.
The scientific basis of psychotherapeutic findings involves a number of difficulties which are above all connected with the insufficient state of basic research in this field. In this situation, significant advances can only be expected on the basis of a systematic long-term investigation and research programme. This applies in particular to the problems of personality and efficiency diagnostics and to group process research. On the basis of some intermediate results, it is shown that by the combined and systematic use of procedures a number of possibilities for the differentiated recording of the complex processes in therapeutic groups can be obtained. 相似文献
925.
926.
G E Kühne R Beier M Heim W Knorr L Perina H Richter V Rossberg R Sorger N Waldow 《Psychiatrie, Neurologie, und medizinische Psychologie》1979,31(4):203-212
The antidepressants trimipramine and imipramine were compared within the framework of a multiclinical study performed under the conditions of a controlled clinical experiment. There has been found a time-different remission of affective und psychomotoric symptoms. The panthymoleptic action of trimipramine and other antidepressants is discussed with reference to these results. Trimipramine influences psychotic states, especially if in depression anxiety is combined with agitation, also in hypochondriac forms of depression. 相似文献
927.
Subjects classified either the numerosity or numeric value of elements in successive stimulus displays. In separate experiments, responses were indicated by oral naming, card sorting, manual tapping, and oral “tapping.” Incongruent levels of numeric value slowed naming and sorting, but not tapping, when numerosity was the cue for responding. Incongruent numerosity slowed tapping, but not naming and sorting, when numeric value was the cue. Changes in stimulus response mapping may thus critically alter the ability to ignore an irrelevant stimulus dimension. 相似文献
928.
Dennis R. Moore Patricia Chamberlain Leona H. Mukai 《Journal of abnormal child psychology》1979,7(3):345-355
This study compared the follow-up incidence of court-recorded nonstatus offenses for three groups of adolescent children. These children had been seen 2 to 9 years earlier for problems with aggression in the home (N = 21), for stealing problems (N = 25), or for normative comparisons (N = 14). The results showed that 77% of the children with stealing problems had court-recorded offenses. This was significantly higher than the aggressive children, whose rate did not differ from the normative sample. These findings suggested that young aggressive children were not at risk for adolescent court contact. Instead, it was the young child with identified stealing problems who was highly likely to become an official delinquent. It also appeared that parental reports of stealing events constituted a predictive measure of later criminal acts. 相似文献
929.
Developmentally, attitudes toward casual alcohol use and toward the abuse of alcohol should be related to the development of value content and value structure. Two studies were conducted that found this to be generally so with upper elementary schoolchildren. A negative attitude toward the abuse of alcohol was definitely related to general measures of the intemalization of those values necessary to be a part of any group as well as the rejection of acts generally considered to be deviant in our culture. Attitudes toward casual use of alcohol were also somewhat related, but not as strongly. However, alcohol attitudes were unrelated to stage of moral development or other measures of thinking processes. Some shifts across age and sex were also noted. Programs oriented toward the prevention of alcohol abuse may need to communicate the value norms of our society and can proceed without impacting attitudes toward casual alcohol use. 相似文献
930.
H Goodglass S E Blumstein J B Gleason M R Hyde E Green S Statlender 《Brain and language》1979,7(2):201-209
This study compared two levels of syntactic encoding with respect to their effect on aphasics' auditory comprehension. The same informational content was presented either as an embedded sentence or as two contiguous simplé propositions. A similar contrast was utilized to compare sentences containing relational terms of time, comparison, instrumentality, as well as sentences involving conjunction reduction, with parallel messages expressed in expanded, simplified form. A picture-verification paradigm was used. Comprehension was significantly enhanced only in the case of embedded sentences, with a tendency for Broca's aphasics to show the maximum effects. 相似文献