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   57382篇
  免费   2088篇
  国内免费   19篇
  59489篇
  2018年   841篇
  2017年   814篇
  2016年   898篇
  2015年   656篇
  2014年   807篇
  2013年   4983篇
  2012年   1386篇
  2011年   1464篇
  2010年   961篇
  2009年   911篇
  2008年   1409篇
  2007年   1259篇
  2006年   1197篇
  2005年   1027篇
  2004年   1009篇
  2003年   1024篇
  2002年   1019篇
  2001年   1684篇
  2000年   1618篇
  1999年   1265篇
  1998年   600篇
  1996年   696篇
  1995年   676篇
  1994年   629篇
  1992年   1270篇
  1991年   1151篇
  1990年   1142篇
  1989年   1031篇
  1988年   1066篇
  1987年   1004篇
  1986年   1038篇
  1985年   1043篇
  1984年   914篇
  1983年   774篇
  1982年   607篇
  1981年   649篇
  1979年   904篇
  1978年   706篇
  1977年   595篇
  1976年   636篇
  1975年   813篇
  1974年   890篇
  1973年   975篇
  1972年   837篇
  1971年   790篇
  1970年   712篇
  1969年   727篇
  1968年   895篇
  1967年   798篇
  1966年   802篇
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
211.
Previous research on the effect of lecture handouts on student learning indicates that students who are given skeletal handouts usually perform better in course examinations than students who take all their own notes. The present study investigates whether the amount of detail in the handout is a critical factor in this. A randomized groups experiment was conducted in the context of a course on dental surgery. Four lecture handout conditions (headings and full text; headings and key points; headings only; no supplementary materials) were compared on tests 2 days and 2 weeks after the lecture. The significant differences between conditions were: ‘headings only’ better than ‘headings and key points’ on the first test; ‘headings only’ better than ‘no supplementary materials’ on the second test; and ‘headings and full text’ better than ‘no supplementary materials’ on the second test. These results indicate that the amount of detail is a critical factor in handout effectiveness.  相似文献   
212.
The authors discuss the results of a study designed to assess nationally certified counselors' perceptions of the relevance of elements of the National Board for Certified Counselors examination to their work as counselors. Support for the validity and appropriateness of the examination in regard to perceived relevance and lack of differentiation on the basis of respondent characteristics were found.  相似文献   
213.
This study attempted to ascertain the most appropriate content and placement of visual stimuli in a hospital-based study of the veridicality of out-of-body perception in the near-death experience (NDE), and the likelihood that a subject in such a study would notice, clearly perceive, and accurately recall a visual stimulus. Based on the questionnaire responses of 63 subjects who had near-death out-of-body experiences (ND OBEs), at least some of the respondents described sufficiently complete and accurate visual perception during the experience to warrant the pursuit of veridicality research in hospitals. Recommended stimulus content for such research includes a surface with intense color and lighting, and simple number and/or letter combinations. Stimuli should be as far below ceiling level as possible while maintaining double-blind criteria. Some characteristics of the individual NDE and NDEr may affect veridical perception during the ND OBE.This paper was derived in part from her Ed.D. dissertation submitted to the Northern Illinois University Graduate School.  相似文献   
214.
215.
Near-death experiencers (NDErs) commonly report shifts in basic values and attitudes, toward intensified compassion and a sense of unconditional love, sprituality, and a sense of mission, and away from materialism and competitiveness. Some researchers have suggested that these attitudinal shifts represent a new stage in human evolution, which will produce major social change. However, knowledge of these reputed NDE aftereffects has been based on NDErs' subjective reports, unverified by objective measures. This study examined relationships between three NDErs' levels of moral, ego, and faith development, as measured by standardized instruments, and extensive qualitative data describing their NDEs and personal attributes. The results suggest that currently available instruments, designed to measure the lower self, may not reflect the awakening to a transpersonal plane of functioning that follows an NDE.Dr. Newsome is in the private practice of psychotherapy and counseling. This paper was derived in part from her Ph.D. thesis submitted to Walden University.  相似文献   
216.
217.
An account is given of the nineteenth-century case of the Tichborne Claimant, in which someone purporting to be Sir Roger Tichborne, a missing heir, arrived in England from Australia 13 years after Sir Roger had been assumed drowned at sea. Many people, including Lady Tichborne, Sir Roger's mother, positively identified him. Others insisted that he was an impostor. A civil court and a criminal trial each found against The Claimant for various reasons, but the question of The Claimant's true identity remains open to this day. The case of the Tichborne Claimant is used to illustrate issues in identification that are of contemporary interest. The particular matter of how faces change over time is briefly discussed.  相似文献   
218.
Clinical judgments on the treatability and prognosis of mentally disordered offeenders (MDO) may strongly influence legal dispositions and the availability of treatment resources. This study examined 1,238 discharge summaries for MDOs referred for court assessments. Psychiatrists evidenced marked variability in how often they recommended treatment and how frequently they judged patients to have a poor prognosis. Two logit analyses suggested that diagnosis and consultation by other clinicians were associated with (a) treatment recommendations (i.e., Axis I diagnosis and social work consultations) and (b) prognosis (i.e., Axis II diagnosis and psychology consultations).  相似文献   
219.
Young and older adults were presented with pictures for study. Their recognition of the information was tested at five retention intervals: immediately, and 48 hr, 1 week, 2 weeks, and 4 weeks later. The main finding of interest was that picture recognition did not show an age-related decline until the 1-week retention interval.  相似文献   
220.
Aging has previously been shown to produce a generalized proportional slowing of all cognitive operations. In contrast, the present results suggested that Alzheimer's disease produces a disproportionate reduction in the speed with which patients carry out one or more mental operations. The tasks that demented patients found particularly difficult involved either a self-directed search of their lexicon or the use of familiarity information.  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