全文获取类型
收费全文 | 43814篇 |
免费 | 933篇 |
国内免费 | 5篇 |
出版年
2019年 | 355篇 |
2018年 | 3801篇 |
2017年 | 3158篇 |
2016年 | 2648篇 |
2015年 | 507篇 |
2014年 | 524篇 |
2013年 | 2180篇 |
2012年 | 1272篇 |
2011年 | 3117篇 |
2010年 | 2932篇 |
2009年 | 1960篇 |
2008年 | 2373篇 |
2007年 | 2825篇 |
2006年 | 706篇 |
2005年 | 787篇 |
2004年 | 782篇 |
2003年 | 662篇 |
2002年 | 657篇 |
2001年 | 582篇 |
2000年 | 657篇 |
1999年 | 478篇 |
1998年 | 351篇 |
1997年 | 285篇 |
1996年 | 282篇 |
1995年 | 282篇 |
1994年 | 256篇 |
1992年 | 375篇 |
1991年 | 375篇 |
1990年 | 388篇 |
1989年 | 354篇 |
1988年 | 331篇 |
1987年 | 293篇 |
1986年 | 312篇 |
1985年 | 337篇 |
1984年 | 290篇 |
1983年 | 321篇 |
1982年 | 266篇 |
1981年 | 284篇 |
1980年 | 251篇 |
1979年 | 362篇 |
1978年 | 332篇 |
1977年 | 259篇 |
1975年 | 311篇 |
1974年 | 342篇 |
1973年 | 329篇 |
1972年 | 280篇 |
1971年 | 249篇 |
1968年 | 288篇 |
1967年 | 273篇 |
1966年 | 245篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
321.
A total of 45 subjects in three age groups (younger, middle-age, older) were trained to word process on microcomputers using a commercial training program and an experimenter-designed test and evaluation protocol. Although all of the subjects mastered the essentials of word processing, the older group took significantly longer to complete the training and evaluation procedures and performed more poorly on a review examination that tested their knowledge of the word-processing commands and techniques. The results are discussed in relation to requirements for trainer assistance, motivational factors, and the need to design training protocols that meet the needs of older adults. 相似文献
322.
William T. Riley P. Alex Mabe James M. Schear 《Journal of psychopathology and behavioral assessment》1987,9(1):67-74
Seventy-five patients admitted to the psychiatric unit of a general hospital were administered a brief neuropsychological screening battery. Discharge diagnoses obtained from the medical records revealed that 20% had brainbased pathology. A discriminant function analysis resulted in a five-variable model (Symbol-Digit Modalities Test, educational level, Psychiatric-Organic subscale of the MMPI, and Shipley Vocabulary and Abstraction scores) which correctly classified 84% of the subjects, with 87% correct identification of the brain-damaged group. A jackknife cross-validation procedure resulted in comparable hit rates. 相似文献
323.
JAMES F. SCORZELLI 《Journal of counseling and development : JCD》1987,65(5):238-240
The emergence of counseling in Malaysia illustrates the importance of a strong professional association and counseling training programs at the university level. 相似文献
324.
325.
326.
M Süss G Rabending F Heydenreich 《Psychiatrie, Neurologie, und medizinische Psychologie》1987,39(2):98-102
A classifier based on the linear regression model was developed to automatically detect sharp transients in EEG, matching the definition of spikes and sharp waves accepted by IFSECN. Practical applications proved the accuracy of the method which succeeded in detecting 84% of sharp transients previously found by an experienced electronencephalographer. Computerized search for sharp transients in EEG records will be particularly useful in long term EEG records obtained from epileptic patients. 相似文献
327.
The paper investigates 54 myelograms and their influence on diagnostic thinking efficacy, on patient management efficacy, and on ultimate outcome efficacy, using statistical methods. Conventional myelography contributes to diagnostic thinking efficacy having a LLR- value of approximately 0.9. With an accuracy value of 0.95 it can be regarded as a reliable method of diagnosis. It alters diagnostic thinking efficacy in no less than 83% (94%) of the cases and patients management efficacy in 89%. Thus, by definition, myelography may be said to affect the state of health of the myelographed patients in 94.4%. 相似文献
328.
Four of our own cases that presented a clinical picture of dementia are discussed. A study of the relative literature has failed to reveal any "swing" in the pattern of the clinical condition: Just as it did ninety years age, paralytic dementia accounts today for well over 60% of all cases, those clinical pictures erroneously regarded as "typical" "classic", accounting for a mere 10%-15% of cases. The need for routine lues serology is pointed out. 相似文献
329.
James C. Dean D.Min 《Journal of religion and health》1987,26(4):270-276
Adherents to the traditional model of alcoholism explain alcoholic behavior as a consequence of alcoholism. Alcoholism is identified as an unseen, unmeasured entity inherent in alcoholics. This concept parallels the thinking of Copernicus, Kepler, Galileo, and Newton, who believed in an unseen, unmeasurable creator behind the physical world. These traditional approaches contrast with the emergent model of alcoholism and twentieth-century scientific thought. Emergent scientific model adherents explain alcoholic behavior without resort to unseen factors. Since the traditional and emergent scientific models begin with different assumptions, model adherents experience communication difficulties. Future developments with determine which model will dominate the field of alcohol studies and treatment. 相似文献
330.
Keller FS 《Journal of the experimental analysis of behavior》1987,48(3):453-455