全文获取类型
收费全文 | 19379篇 |
免费 | 269篇 |
国内免费 | 32篇 |
专业分类
教育 | 13233篇 |
科学研究 | 1916篇 |
各国文化 | 181篇 |
体育 | 1848篇 |
综合类 | 28篇 |
文化理论 | 135篇 |
信息传播 | 2339篇 |
出版年
2021年 | 150篇 |
2020年 | 305篇 |
2019年 | 435篇 |
2018年 | 497篇 |
2017年 | 598篇 |
2016年 | 521篇 |
2015年 | 351篇 |
2014年 | 471篇 |
2013年 | 3389篇 |
2012年 | 405篇 |
2011年 | 454篇 |
2010年 | 361篇 |
2009年 | 383篇 |
2008年 | 371篇 |
2007年 | 389篇 |
2006年 | 344篇 |
2005年 | 306篇 |
2004年 | 562篇 |
2003年 | 442篇 |
2002年 | 452篇 |
2001年 | 347篇 |
2000年 | 388篇 |
1999年 | 286篇 |
1998年 | 168篇 |
1997年 | 189篇 |
1996年 | 216篇 |
1995年 | 183篇 |
1994年 | 172篇 |
1993年 | 158篇 |
1992年 | 250篇 |
1991年 | 244篇 |
1990年 | 216篇 |
1989年 | 273篇 |
1988年 | 247篇 |
1987年 | 261篇 |
1986年 | 248篇 |
1985年 | 295篇 |
1984年 | 242篇 |
1983年 | 236篇 |
1982年 | 204篇 |
1981年 | 168篇 |
1980年 | 137篇 |
1979年 | 224篇 |
1978年 | 181篇 |
1977年 | 158篇 |
1976年 | 177篇 |
1975年 | 133篇 |
1974年 | 151篇 |
1973年 | 129篇 |
1971年 | 134篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
892.
893.
894.
William E. Wiethoff 《Quarterly Journal of Speech》2013,99(2):197-207
A special mode of resistance, insolence, forced the Southern gentry to acknowledge a unique power among slaves: their speech. This essay (1) explains the lasting significance of the gentry's efforts to suppress slave speech, (2) recounts the elements of insolence according to ancient and modern authorities on rhetoric, and (3) illustrates how slaves suffered for using this discursive tactic effectively. The nature and limits of slave insolence illuminate several troubled dimensions of plantation society. 相似文献
895.
896.
Working with robots is an attractive possibility for educators at many levels. The price and availability of robotic hardware are favorable, there are often examples in the media of school groups doing robotic projects, and the projects support group design and co-operative activity. Still, these projects cannot be organized without considerable effort. In this article, we look at some of the opportunities and pitfalls that are encountered when working with robots in an educational setting, illustrating them with anecdotes from our experience with eight small robot-building projects, with participants ranging in age from nine to adult, and duration ranging from a single day to a full semester. We suggest some of the benefits of these projects and outline the problems organizers and participants will be likely to face. 相似文献
897.
Laurie E. Powers Tracee Garner Betsy Valnes Peter Squire Alison Turner Todd Couture 《Exceptionality》2013,21(1):45-56
Abstract Although transition outcomes for youth with disabilities have shown some improvement and transition support practices have been identified, many young people continue to face transition barriers that preclude their full participation in key adult life activities. While research efforts have largely been professionally driven, there is emerging literature suggesting that the use of participatory, empowerment methodologies may bolster the identification of appropriate research methods and useful solutions to problems, as well as promoting the application of findings to accomplishing practice and policy improvements. The purpose of this study was to use a youth-directed, participatory action methodology to investigate youths' perceptions of the value of transition promotion experiences identified as effective by professionals, and to examine the level at which youth with disabilities participate in those experiences. A survey was developed and administered to 202 young people with disabilities by leaders from the National Youth Leadership Network. Findings indicated that youth generally endorse the importance of validated transition promotion practices; however, they reported having limited opportunity to participate in them. Implications related to the use of participatory action methodologies and needed practice and policy improvements are discussed. 相似文献
898.
Margaret E. Mahoney 《Mentoring & Tutoring: Partnership in Learning》2013,21(1):32-33
The very short time now available in higher education institutions for the coverage of subject‐specific content in PGCE courses gives problems in ensuring adequate time for effective workshop safety training, especially for those students who will be responsible for the management of pupils in resistant materials workshops. The schedule prescribed by the National Association of Advisers and Inspectors in Design and Technology (NAAIDT) provides a recognised base for the content of such courses. This paper examines the theoretical issues involved, weighs conflicting demands and describes one solution found workable under the current NAAIDT scheme. 相似文献
899.
Standards‐based progress reports (SBPRs) require teachers to grade students using the performance levels reported by state tests and are an increasingly popular report card format. They may help to increase teacher familiarity with state standards, encourage teachers to exclude nonacademic factors from grades, and/or improve communication with parents. The current study examines the SBPR grade–state test score correspondence observed across 2 years in 125 third and fifth grade classrooms located in one school district to examine the degree of consistency between grades and state test results. It also examines the grading practices of a subset of 37 teachers to determine whether there is an association between teacher appraisal style and convergence rates. A moderate degree of grade–test score convergence was observed using three agreement estimates (coefficient kappa, tau‐b correlations, and classroom‐level mean differences between grades and test scores). In addition, only small amounts of grade–test score convergence were observed between teachers; a much greater proportion of variance lay within classrooms and subjects. Appraisal style correlated weakly with convergence rates, but was most strongly related to assigning students to the same performance level as the test. Therefore using recommended grading practices may improve the quality of SBPR grades to some extent. 相似文献
900.
N. G. McCrum 《牛津教育评论》2013,39(4):369-397
Abstract The academic efficiency and social justice of entry procedures at Oxford and Cambridge Universities are examined over the past quarter of a century. For each major subject the mean A‐level scores of males and females entering from state and independent schools are compared with mean final examination scores in the major subjects. In any comparison of state and independent cohorts of the same gender, within the bounds of normal statistical fluctuation, the difference in A‐level score is a good predictor of the difference in finals score. For example, when between state men and independent men the difference in A‐level score is zero, the difference between mean finals score is zero also. The origin of female under‐achievement is examined. In most subjects there is pronounced gender inequality due to the following chain of circumstances: (1) to break‐even in finals women require at entry better grades at Advanced Level than men; (2) women used to have much the better A‐levels and so, in finals a quarter of a century ago, they matched and even — in some subjects — surpassed the men; (3) the A‐levels of women entering Oxford and Cambridge Universities fell off during the 1970s; (4) today female A‐level scores are slightly worse than male A‐level scores, and so female finals scores are much worse, in most subjects, than male finals scores. The concept of an ideal subject is defined; this is a subject in which zero difference in A‐level score between male and female yields zero difference in finals score. Law at Cambridge and chemistry at Oxford are ideal subjects. Ideal subjects are rare at Oxbridge: most subjects exhibit a significant male lead in finals when male and female have equal A‐level scores. The most non‐ideal subject at Oxford is mathematics, in which zero difference in A‐level score between males and females yields a male lead in finals score of 13%: at Oxford the other non‐ideal subjects are physics (male lead at equal A‐levels 11%), philosophy, politics and economics (9%), history (8%), modem languages (8%) and English (5%). An ideal subject is a paradigm which requires even‐handedness between male and female cohorts in the following parameters: (1) efficiency of course selection from school; (2) efficiency of teaching; (3) efficiency of finals assessment; (4) latent ability. A pronounced relative decline in the A‐level scores of girls educated in state maintained schools entering English and Welsh universities occurred in the 1970s; it is attributed to the reform of the state school system, particularly the growth in mixed‐sex comprehensive schools and the decline in the number of female single‐sex grammar schools. A peculiar aspect of the admissions filters at both Oxford and Cambridge ensures that state‐school educated men gaining entry do so with A‐level scores markedly superior to those of the other three cohorts. 相似文献