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   32511篇
  免费   1111篇
  国内免费   14篇
  33636篇
  2020年   330篇
  2019年   366篇
  2018年   447篇
  2017年   505篇
  2016年   542篇
  2015年   443篇
  2014年   497篇
  2013年   2675篇
  2012年   894篇
  2011年   918篇
  2010年   572篇
  2009年   615篇
  2008年   879篇
  2007年   810篇
  2006年   730篇
  2005年   732篇
  2004年   683篇
  2003年   663篇
  2002年   685篇
  2001年   791篇
  2000年   772篇
  1999年   579篇
  1998年   369篇
  1997年   312篇
  1992年   539篇
  1991年   520篇
  1990年   512篇
  1989年   521篇
  1988年   466篇
  1987年   470篇
  1986年   499篇
  1985年   549篇
  1984年   478篇
  1983年   439篇
  1982年   329篇
  1981年   372篇
  1979年   477篇
  1978年   373篇
  1977年   337篇
  1976年   335篇
  1975年   465篇
  1974年   509篇
  1973年   525篇
  1972年   447篇
  1971年   430篇
  1970年   399篇
  1969年   423篇
  1968年   519篇
  1967年   503篇
  1966年   485篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
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   
992.
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   
993.
994.
995.
996.
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   
997.
998.
999.
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   
1000.
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