全文获取类型
收费全文 | 11959篇 |
免费 | 5篇 |
专业分类
教育 | 9248篇 |
科学研究 | 1225篇 |
各国文化 | 4篇 |
体育 | 377篇 |
文化理论 | 386篇 |
信息传播 | 724篇 |
出版年
2021年 | 5篇 |
2020年 | 6篇 |
2019年 | 19篇 |
2018年 | 2190篇 |
2017年 | 2088篇 |
2016年 | 1585篇 |
2015年 | 124篇 |
2014年 | 127篇 |
2013年 | 173篇 |
2012年 | 225篇 |
2011年 | 697篇 |
2010年 | 836篇 |
2009年 | 432篇 |
2008年 | 646篇 |
2007年 | 1153篇 |
2006年 | 76篇 |
2005年 | 403篇 |
2004年 | 455篇 |
2003年 | 367篇 |
2002年 | 140篇 |
2001年 | 11篇 |
2000年 | 25篇 |
1999年 | 3篇 |
1998年 | 10篇 |
1997年 | 19篇 |
1996年 | 12篇 |
1995年 | 5篇 |
1994年 | 5篇 |
1993年 | 7篇 |
1991年 | 7篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 5篇 |
1987年 | 3篇 |
1986年 | 4篇 |
1985年 | 9篇 |
1984年 | 4篇 |
1982年 | 11篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1976年 | 4篇 |
1974年 | 4篇 |
1973年 | 3篇 |
1972年 | 3篇 |
1970年 | 3篇 |
1968年 | 4篇 |
1835年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
Wie können Ergebnisse der Kompetenzdiagnostik in Forschungsprojekten sinnvoll zurückgemeldet werden?
Reporting on research results to students, teachers and institutions is a big challenge within competence assessment research: students individually have to be given feedback about how they performed, teachers have to be provided with information about their classes, education authorities are interested in actual research results. For feedback being helpful for students, teachers and institutions, the following questions have to be thought of: (1) Who is the feedback given to? What is the aim of the feedback? (2) Which results shall be reported? (3) How should feedback theoretically look like? And (4) how does feedback depend on the given general framework? The given article discusses these questions and offers a “checklist” to research projects with a focus on competence assessment. 相似文献
902.
This article is focussing on a historical approach to the term of aesthetic education from three different angles: as history of ideas, biographies and images. Aesthetic education is thereby understood as performative and reflective involvement with aesthetics and the fine arts such as arts, theatre and literature etc. A first approach is defining the history of ideas as a theoretical reconstruction of aesthetic concepts and their educational relevance; this history is also discussing educational theories and their aesthetic implications. It is more or less an implicit and compensatory history because the important contexts are not visible at first sight; and the aesthetic and pedagogical theories often need a reciprocal addition. A biographical perspective is hereby concentrated on the biography of artists. Thereby the educational science of biographies are highlighting the situation of the arts and the artists, the development of becoming an artist, the progression as an artist and the artistic institutions in a educational-aesthetic nexus. Such a perspective is supplementing the history of ideas concerning cultural and socio-historical dimensions as well as institutional and biographic aspects. Finally, the history of images is focusing on the thesis that every picture also includes a programme of aesthetic education. In pictures the process of productive and reflective visualisation is expressed: paintings refer to their production and their understanding. For the method of the historical-educational iconography of aesthetic education a historicizing matrix from production aesthetics, work aesthetics and reception aesthetics is suggested. This matrix is combined with a theory of education as transformation of self-relation, of relations to other individuals and the world. The three approaches just mentioned are exemplified by Leonardo da Vinci and his famous picture “Vitruvian Man” from 1492. 相似文献
903.
Jean Murray 《Teachers and Teaching》2013,19(1):143-160
Abstract This article reports on research analysing how primary initial teacher educators define and participate in research activities. A representative sample of teacher educators in one institution in the UK were interviewed in depth to identify individuals' perceptions of the place of research in their work. All the interviewees saw their most important role as teaching and supporting students. In all cases, research was seen as a low priority. Engagement in research was seen as moving away from the practical, school and student centred world of primary initial teacher education towards a more conventionally ‘academic’ world. The established researchers within the teacher education community were seen as a privileged elite. Two clusters of factors which influence these perceptions are defined as: firstly, the effects of the changing nature of the institution and internal structures it has generated in response to national changes; and secondly, the ways in which the interviewees define their work its conditions and its underlying values. These factors and the tensions they cause are explored in relation to the pressures placed on the teacher education communities by the 1996 Research Assessment Exercise and the development of increased partnerships with schools. 相似文献
904.
Due to its unique, flexible structure and low cost, virtually any student can participate in the Applied Tailored Leadership Adventure for Success (ATLAS) Leadership Certificate Program at the University of Arizona. 相似文献
905.
906.
Weihua Zhou 《Publishing Research Quarterly》2008,24(1):32-39
In China, educational publishing is devoted to publishing mainly textbooks and teaching materials. For a long time, education
publishing has dominated others in China’s publishing industry. However, after entering the new century, especially in the
last 2 years, there has been the impact of changes in the College-Entrance Examination, the Invitation to Bid for Compilation
and Publication of Textbooks, government procurement and Scientific and Technological Advancement for supplementary books.
Therefore, publishing for education has been losing its previous major role and dominance. For making a leap forward and breakthrough
in educational publication, we must open up a new train of thought for the development of educational publishing, we need
three distinct transformations: first, change in publishing mode from extensive to intensive growth. Second, transformation
from variety-scale to market-scale expansion. Third, transformation from being just a provider of content to one providing
both content and services. 相似文献
907.
Andreas Veglis 《Publishing Research Quarterly》2008,24(2):111-123
This paper attempts a direct comparison of the available alternative channels that can be employed in a cross media publishing
scheme. More precisely it examines the content, the publishing speed, and the rhythm of the publishing channels. Interesting
conclusions are drawn concerning the characteristics of each channel. A new publishing channel is proposed in order to allow
newspapers to directly compete with radio and TV channels. 相似文献
908.
Features for image retrieval: an experimental comparison 总被引:6,自引:0,他引:6
909.
Negation recognition in medical narrative reports 总被引:1,自引:0,他引:1
Substantial medical data, such as discharge summaries and operative reports are stored in electronic textual form. Databases
containing free-text clinical narratives reports often need to be retrieved to find relevant information for clinical and
research purposes. The context of negation, a negative finding, is of special importance, since many of the most frequently
described findings are such. When searching free-text narratives for patients with a certain medical condition, if negation
is not taken into account, many of the documents retrieved will be irrelevant. Hence, negation is a major source of poor precision
in medical information retrieval systems. Previous research has shown that negated findings may be difficult to identify if
the words implying negations (negation signals) are more than a few words away from them. We present a new pattern learning
method for automatic identification of negative context in clinical narratives reports. We compare the new algorithm to previous
methods proposed for the same task, and show its advantages: accuracy improvement compared to other machine learning methods,
and much faster than manual knowledge engineering techniques with matching accuracy. The new algorithm can be applied also
to further context identification and information extraction tasks.
相似文献
Lior RokachEmail: |
910.
Document length is widely recognized as an important factor for adjusting retrieval systems. Many models tend to favor the
retrieval of either short or long documents and, thus, a length-based correction needs to be applied for avoiding any length
bias. In Language Modeling for Information Retrieval, smoothing methods are applied to move probability mass from document
terms to unseen words, which is often dependant upon document length. In this article, we perform an in-depth study of this
behavior, characterized by the document length retrieval trends, of three popular smoothing methods across a number of factors,
and its impact on the length of documents retrieved and retrieval performance. First, we theoretically analyze the Jelinek–Mercer,
Dirichlet prior and two-stage smoothing strategies and, then, conduct an empirical analysis. In our analysis we show how Dirichlet
prior smoothing caters for document length more appropriately than Jelinek–Mercer smoothing which leads to its superior retrieval
performance. In a follow up analysis, we posit that length-based priors can be used to offset any bias in the length retrieval
trends stemming from the retrieval formula derived by the smoothing technique. We show that the performance of Jelinek–Mercer
smoothing can be significantly improved by using such a prior, which provides a natural and simple alternative to decouple
the query and document modeling roles of smoothing. With the analysis of retrieval behavior conducted in this article, it
is possible to understand why the Dirichlet Prior smoothing performs better than the Jelinek–Mercer, and why the performance
of the Jelinek–Mercer method is improved by including a length-based prior.
相似文献
Leif AzzopardiEmail: |