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   25725篇
  免费   851篇
  国内免费   12篇
  2019年   245篇
  2018年   298篇
  2017年   339篇
  2016年   381篇
  2015年   298篇
  2014年   327篇
  2013年   1837篇
  2012年   628篇
  2011年   645篇
  2010年   406篇
  2009年   422篇
  2008年   600篇
  2007年   544篇
  2006年   481篇
  2005年   478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   471篇
  1966年   450篇
  1958年   252篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
The accreditation standards outlined in the article are used by the International Association of Counseling Services, Inc., as the basis for the formal accreditation of college and university counseling programs throughout the United States and Canada. They reflect the program elements and practice standards that are deemed essential in a counseling center that provides high-quality services to students.  相似文献   
973.
The significant differences between the Diagnostic and Statistical Manual of Mental Disorders (DSM-III-R; American Psychiatric Association, 1987) and the DSM-IV (American Psychiatric Association, 1994) are described, focusing on the types of mental disorders counselors frequently diagnose and treat. These include several disorders included in the children's section as well as Adjustment Disorders, Substance-Related Disorders, Mood Disorders, Anxiety Disorders, and Personality Disorders.  相似文献   
974.
975.
In this comment, I examine Amsel’s theory in the light of rats’ reaction not to frustrative non-reward per se, but to the more complicated case in which frustrative nonreward is part of a rule-based sequence of reward quantities. The discussion goes beyond Amsel’s emphasis on dispositional memory to consider cognitive and representational memory—the signaling properties of reinforcement and nonreinforcement. The strengths and weaknesses of Amsel’s theory are discussed with the fresh perspective that this viewpoint provides, and some issues emerge that may be fruitful for further study.  相似文献   
976.
977.
One thousand, one hundred and twenty-one Jewish concentration camp survivors were compared with 367 Jewish controls who had not been in a concentration camp, and had not lost any family members in such a camp. Of interest was the mortality of camp and comparison groups, on the hypothesis that the stress of being in a camp would adversely affect inmates. It was found that former camp inmates were over twice as likely to die of cancer, coronary heart diesease, or other causes as the comparison subjects of similar age and sex composition, and that severity of stress was correlated with mortality in the expected direction. Diathesis, determined by means of a special interviewer-administrated questionnaire, was found to interact synergistically with stress in producing high mortality.  相似文献   
978.
979.
The past 15 years have witnessed a call for allopathic medicine to incorporate psychosocial perspectives into education and clinical practice. While a biopsychosocial perspective has influenced academic medicine in areas such as primary care and psychiatry, its direct impact on clinical medicine has been questionable. One barrier to the incorporation of psychosocial information into medicine which has only recently received attention has been different cultural assumptions which govern medicine versus the social-behavioral sciences. These assumptions are examined in the context of four issues: knowledge paradigms, models of education, acculturation of psychosocial knowledge into medicine, and patient autonomy. This cultural analysis provides a vantage point for understanding similarities as well as points of divergence between psychosocial and biomedical knowledge and practice.  相似文献   
980.
Despite the many technological developments in arterial perfusion and cardiac surgical procedures, open-heart surgery is still believed to pose a significant risk for cerebral injury. There are several potential causes of brain damage during open-heart surgery, including prolonged or severe arterial hypotension, as well as emboli emanating from the cardiopulmonary bypass circuit or the operative field. This article reviews the available neuropsychological studies of outcome following cardiac valve replacement and coronary artery bypass grafting. Because both procedures are life-saving operations, the research in this area has been quasi-experimental and fraught with methodological problems. Nonetheless, the findings converge to suggest that cognitive dysfunction occurs after open-heart surgery, and that the deficits are attributable, at least in part, to factors specific to the operation or to the patient being maintained on cardiopulmonary bypass. Preliminary findings suggest that embolization is the primary cause of perioperative deficits in uncomplicated operations. Studies have also consistently found preoperative deficits in this population, suggesting that neuropsychological dysfunction is caused by severe chronic cardiac disease as well as open-heart surgery.  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