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   39205篇
  免费   1547篇
  国内免费   15篇
  2019年   401篇
  2018年   594篇
  2017年   597篇
  2016年   638篇
  2015年   476篇
  2014年   598篇
  2013年   2831篇
  2012年   1049篇
  2011年   1049篇
  2010年   731篇
  2009年   675篇
  2008年   991篇
  2007年   961篇
  2006年   885篇
  2005年   806篇
  2004年   762篇
  2003年   728篇
  2002年   779篇
  2001年   1255篇
  2000年   1233篇
  1999年   937篇
  1998年   420篇
  1997年   429篇
  1996年   421篇
  1992年   807篇
  1991年   758篇
  1990年   755篇
  1989年   682篇
  1988年   685篇
  1987年   652篇
  1986年   682篇
  1985年   664篇
  1984年   598篇
  1983年   523篇
  1982年   391篇
  1981年   392篇
  1979年   601篇
  1978年   482篇
  1977年   415篇
  1976年   418篇
  1975年   516篇
  1974年   636篇
  1973年   667篇
  1972年   501篇
  1971年   519篇
  1970年   463篇
  1969年   523篇
  1968年   625篇
  1967年   573篇
  1966年   557篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
942.
943.
The impact of professional negotiations on the current educational scene is examined and related to clarification of the school counselor role. Role confusion continues in the school situation, and negotiations may well be the way to bring about a change in the status quo. Negotiations for counselors are explored from the standpoints of dimensions of negotiations, implementation of negotiations, and attitude of professional associations. Conclusions are that negotiations have significant implications for counselor role delineation.  相似文献   
944.
A work experience project for low income adults is described. “Counselors” in this project were found to have little experience; little training in interviewing, statistics, psychological analysis, or other guidance and counseling techniques; and inadequate supervision. Results on aptitude tests were reported on the average 26 days after test administration. Occupational information was sadly lacking. The question is raised: When is a counselor… ?  相似文献   
945.
This study sought to assess students' reactions toward their vocational and educational counseling at a university counseling center. Students receiving educational-vocational counseling during the 1968-69 academic year served as subjects whose responses to a 29-item questionnaire were used to determine their reactions to counseling. The majority of clients who were counseled by advanced trainees or doctorate level staff viewed their counseling experience positively. A large percentage of the clients of beginning practicum students viewed their counseling negatively. The findings suggested weaknesses in vocational counseling facilities, in counselors' skills, and in training of beginning practicum students. Implications for change are suggested and the need for assessment in counseling agencies is emphasized.  相似文献   
946.
Today's college students are finding an increasing need for legal information. At California State College, Los Angeles, a lawyer from the community was retained by the college counseling center to consult with students who had legal questions. During the academic year 1968-69, 302 students took advantage of this service. Although most of their questions dealt with selective service, other areas of concern included landlord-tenant matters, domestic relations, and criminal and civil law. Student reactions were sampled by means of a questionnaire. The general response was highly favorable, thus supporting the need for a legal counseling service on the college campus.  相似文献   
947.
948.
Summary The effect of mental arithmetic (standard multiplication, with eyes closed) and eye-opening on the power spectral density of the EEG (recorded bipolarly from occipital and parietal regions) have been compared. The EEG was recorded on magnetic tape from normal subjects, (medical students) in a constant environment and subsequently analysed by an analogue computer (Noratom Instrument for Statistical Analysis and Computation, ISAC).Absolute measurements made from 15 subjects with eyes closed have shown that peaks of power at 10 Hz vary from 9 to 46 V2 per Hz. Qualitatively, suppression of power at 10 Hz is greater due to eye-opening than mental arithmetic.Analysis of pooled power spectral density functions from 11 subjects showed that the effect of eye-opening differed significantly from the effect of mental arithmetic at 2.5 and 12.5 Hz. Suppression of lower frequency alpha activity was more pronounced during calculation than during eye-opening. Compared with the eyes closed condition, eye-opening showed a highly significant suppression at 10 and 12.5 Hz (alpha activity) and from 15 to 25 Hz (beta activity). Mental arithmetic induced significant suppression at 7.5 and 10 Hz and from 15 to 30 Hz. Eye-opening enhanced lower frequency activity which calculation suppressed.Variation was greater between first, second and third calculations in pooled power spectral densities than between corresponding eye-opening epochs. It is suggested that these differences in effects of eye-opening and mental arithmetic reflect differences in underlying cerebral activity, rather than that an underlying factor common to both effects may be orbital in origin.  相似文献   
949.
950.
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