全文获取类型
收费全文 | 1315篇 |
免费 | 9篇 |
国内免费 | 2篇 |
专业分类
教育 | 1046篇 |
科学研究 | 38篇 |
各国文化 | 22篇 |
体育 | 113篇 |
文化理论 | 25篇 |
信息传播 | 82篇 |
出版年
2021年 | 9篇 |
2019年 | 26篇 |
2018年 | 19篇 |
2017年 | 36篇 |
2016年 | 27篇 |
2015年 | 10篇 |
2014年 | 27篇 |
2013年 | 281篇 |
2012年 | 29篇 |
2011年 | 34篇 |
2010年 | 25篇 |
2009年 | 42篇 |
2008年 | 50篇 |
2007年 | 39篇 |
2006年 | 31篇 |
2005年 | 24篇 |
2004年 | 25篇 |
2003年 | 22篇 |
2002年 | 26篇 |
2001年 | 19篇 |
2000年 | 23篇 |
1999年 | 19篇 |
1998年 | 22篇 |
1997年 | 21篇 |
1996年 | 21篇 |
1995年 | 12篇 |
1994年 | 18篇 |
1993年 | 14篇 |
1992年 | 10篇 |
1991年 | 12篇 |
1990年 | 14篇 |
1989年 | 16篇 |
1988年 | 17篇 |
1987年 | 15篇 |
1986年 | 17篇 |
1985年 | 16篇 |
1984年 | 14篇 |
1983年 | 14篇 |
1982年 | 14篇 |
1981年 | 18篇 |
1980年 | 16篇 |
1979年 | 22篇 |
1978年 | 17篇 |
1977年 | 22篇 |
1976年 | 15篇 |
1975年 | 9篇 |
1974年 | 12篇 |
1973年 | 10篇 |
1972年 | 7篇 |
1971年 | 9篇 |
排序方式: 共有1326条查询结果,搜索用时 15 毫秒
81.
Miller PR Gittard SD Edwards TL Lopez DM Xiao X Wheeler DR Monteiro-Riviere NA Brozik SM Polsky R Narayan RJ 《Biomicrofluidics》2011,5(1):13415
In this study, carbon fiber electrodes were incorporated within a hollow microneedle array, which was fabricated using a digital micromirror device-based stereolithography instrument. Cell proliferation on the acrylate-based polymer used in microneedle fabrication was examined with human dermal fibroblasts and neonatal human epidermal keratinocytes. Studies involving full-thickness cadaveric porcine skin and trypan blue dye demonstrated that the hollow microneedles remained intact after puncturing the outermost layer of cadaveric porcine skin. The carbon fibers underwent chemical modification in order to enable detection of hydrogen peroxide and ascorbic acid; electrochemical measurements were demonstrated using integrated electrode-hollow microneedle devices. 相似文献
82.
Gregory Trevors Melissa Duffy Roger Azevedo 《Educational technology research and development : ETR & D》2014,62(5):507-528
Hypermedia learning environments (HLE) unevenly present new challenges and opportunities to learning processes and outcomes depending on learner characteristics and instructional supports. In this experimental study, we examined how one such HLE—MetaTutor, an intelligent, multi-agent tutoring system designed to scaffold cognitive and metacognitive self-regulated learning (SRL) processes—interacts with learner’s prior domain knowledge to affect their note-taking activities and subsequent learning outcomes. Sixty (N = 60) college students studied with MetaTutor for 120 min and took notes on hypermedia content of the human circulatory system. Log-files and screen recordings of learner-system interactions were used to analyze notes for several quantitative and qualitative variables. Results show that most note-taking was a verbatim copy of instructional content, which negatively related to the post-test measure of learning. There was an interaction between prior knowledge and pedagogical agent scaffolding, such that low prior knowledge students took a greater quantity of notes compared to their high prior knowledge counterparts, but only in the absence of MetaTutor SRL scaffolding; when agent SRL scaffolding was present, the note-taking activities of low prior knowledge students were statistically equivalent to the number of notes taken by their high prior knowledge counterparts. Theoretical and instructional design implications are discussed. 相似文献
83.
Roger Kaufman 《Performance Improvement》2014,53(2):35-39
While it is conventional and comfortable to start professional performance improvement with analysis, doing so might make us wrong about 80% to 90% of the time. Analysis and cure, using Harless's (1975) immortal insight, are vital, but starting there is problematic. First do an assessment to justify where the organization is headed (and why go there) and then analysis and cure will be powerful. 相似文献
84.
The article presents an analysis of how diversity is defined and attended to in Swedish schools. The research reported has been carried out as a case study of categorizing practices that concern the uses of neuropsychiatric diagnoses, notably ADHD. The data were collected as part of a larger study. The interaction over a two-year period between the parents of a boy (William, aged 5.5 years) and representatives of the school (school psychologist, principal, teacher etc.) has been analysed. It is shown that parents and professionals provide different accounts of William’s difficulties. The parents, while not denying that their son causes problems in class, argue that the boy will mature and that the problems will disappear. The representatives of the school try to convince the parents that a neuropsychiatric examination of the boy will be beneficial to all parties. The long process of negotiation can be understood as a rhetorical drama, where the category ‘ADHD’ serves as the resolution of a complex institutional problem in the modern welfare state. 相似文献
85.
86.
87.
J. Bruce Francis Michalina Vaughan Colin Flood Page Sally Tomlinson R. A. Becher Margaret C. Ives John Urry K. G. Collier Meir Zadok Charles Carter Jürgen Schramm Jean Barry Graeme C. Moodie Donald Bligh R. A. King D. G. Mulcahy Peter Scott F. R. Charmer T. R. Bone John A. Hughes Roger Greenhough Alec M. Ross John Wakeford Joyce Skinner Duncan B. Nimmo Cedric Cullingford L. R. B. Elton 《Higher Education》1979,8(6):709-744
88.
Adriana Bernardi Francesca Becherini Marco Verità Patrick Ausset Maura Bellio Ulrike Brinkmann Helene Cachier Anne Chabas Felix Deutsch Marie-Pierre Etcheverry Franco Geotti Bianchini Ricardo H.M. Godoi Velichka Kontozova-Deutsch Roger Lefèvre Tiziana Lombardo Peter Mottner Chiara Nicola Isabelle Pallot-Frossard René Van Grieken 《Journal of Cultural Heritage》2013,14(6):527-536
The methodology of protecting the European stained glass windows against environmental risk (e.g. meteorological factors, air pollution, microorganisms) by means of an external glazing is not new. In spite of many scientific studies carried out in the last 20 years, some questions were still up for discussion. The European VIDRIO (2002–2005) project gave an answer to these questions. The research carried out by the different project partners established a new multidisciplinary approach aimed at evaluating the efficiency of the protective glazing systems and their effects on stained glass windows conservation, and finally at assessing the most appropriate strategy to preserve stained glass windows. Scientific results showed that the so-called isothermal glazing (i.e. ventilation by the air coming from the inside of the building) protected efficiently the ancient stained glass window from environmental attack (i.e. rain, pollutants, condensation, thermal shocks) with very limited secondary effects. The scientific research highlighted that its efficiency was strongly related to the technical design of the protective system. In particular, the ventilation and the size of the interspace had to be carefully considered. The research developed within the VIDRIO project was turned into general recommendations to the owners and practitioners on the best practice for the stained glass windows future conservation. 相似文献
89.
90.
Roger Merry 《British Journal of Special Education》1991,18(2):71-74
Next year Britain will enter the Single European Market. This may encourage greater alignment of special educational legislation here with the laws in other member countries. Roger Merry, senior lecturer in education, School of Education, Leicester University, asks what lesson can be learned from practice in Europe, especially in relation to the National Curriculum. 相似文献