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   490篇
  免费   18篇
教育   335篇
科学研究   30篇
各国文化   7篇
体育   72篇
综合类   1篇
文化理论   7篇
信息传播   56篇
  2023年   2篇
  2022年   1篇
  2021年   10篇
  2020年   17篇
  2019年   30篇
  2018年   31篇
  2017年   28篇
  2016年   25篇
  2015年   18篇
  2014年   21篇
  2013年   104篇
  2012年   26篇
  2011年   20篇
  2010年   9篇
  2009年   21篇
  2008年   11篇
  2007年   16篇
  2006年   10篇
  2005年   16篇
  2004年   12篇
  2003年   15篇
  2002年   8篇
  2001年   7篇
  2000年   10篇
  1999年   5篇
  1998年   3篇
  1997年   3篇
  1996年   5篇
  1995年   4篇
  1994年   1篇
  1992年   2篇
  1991年   2篇
  1990年   2篇
  1989年   3篇
  1988年   2篇
  1985年   1篇
  1981年   1篇
  1978年   2篇
  1977年   1篇
  1976年   2篇
  1974年   1篇
排序方式: 共有508条查询结果,搜索用时 15 毫秒
91.
The role of false belief in establishing children's social relationships during the transition to school was examined and compared to other social cognitive constructs. One hundred and fourteen 5‐year‐olds were recruited during their 1st year of school (Time 1); 106 children were retained 1 year later. False belief, emotion expression recognition, empathy, verbal ability, and peer‐rated social preference were measured at both times. False belief at Time 1 had a direct influence on concurrent social preference, over and above the influence of emotion expression recognition and empathy. False belief made no independent contribution to later social preference accounting for stability in social preference. The role of social cognitive development is discussed with respect to how children establish and maintain their position in a peer group.  相似文献   
92.
93.
Regulation     
Bill F. Chamberlin and Charlene J. Brown, eds., THE FIRST AMENDMENT RECONSIDERED: NEW PERSPECTIVES ON THE MEANING OF FREEDOM OF SPEECH. AND PRESS (New York: Longman, 1982---$27.95)

Marc A. Franklin, CASES AND MATERIALS ON MASS MEDIA LAW (Mineola, N.Y.: The Foundation Press, 1982---$26.00)

LEGAL AND BUSINESS ASPECTS OF THE ADVERTISING INDUSTRY 1982 (Practicing Law Institute, 810 7th Avenue, New York, N.Y. 10019---$30.00, paper)

PRIVACY (Social Issues Resources Inc., P.O. Box 2507, Boca Raton, Fla. 33432---two loose-leaf volumes containing a total of 180 articles, $117.00, also available separtately at $65.00 and $52.00 respectively)  相似文献   
94.
Although there have been efforts to define, describe, and classify business models, current literature does not provide a structured method of comparing business models between companies within or between industries. This article outlines a conceptual business model and proposes 5 components that a business model for content delivery should include: the product, the consumer, the revenue, the price, and the delivery. By using the newspaper and magazine industry as an example, we empirically test the impact of these 5 components on profit. Furthermore, we address 2 key issues content providers are confronted with when selling digital content: First, how much of the digital content is available free or at cost, and second, is the digital product as complementary or a substitute to the physical product. Finally, we assess the risk of cannibalizing the physical product with the digital one by a multiple regression analysis.  相似文献   
95.
Is your library market-driven, product-driven or customer-driven? New internet-based data and tools are now available for public libraries that enable you to be customer-driven—for your own unique service area. This article shows how three library systems are using these tools—focused on market segmentation data and geographic information system (GIS) technology—to deliver more relevant customer services. Each solution described in the article was developed in close collaboration between CIVICTechnologies and the library, involving research to understand the library's objectives and desired outcomes, and using the data needed to meet each library's unique challenge.  相似文献   
96.
ABSTRACT

The preservation state of parchment primarily depends on the structure of the collagen fibre network, which in turn is responsible for optical anisotropy, i.e. birefringence. Polarised light microscopy can therefore be used as a non-invasive technique that allows recording of birefringence distribution in the parchment, which directly relates to stress–strain distribution. Using samples from diverse sources (commercial parchment, parchment used by restorers for book binding, and parchment fabricated for the purpose of this study), we assessed the capability of polarised light microscopy for various diagnostics. We performed, for instance, identification of gelatinised regions, layered or ?brous regions in parchment cross section, qualitative analysis of parchment fat content (lipids), observation of stress-induced patterns resulting from tensile tests, and observation of water diffusion. These proof-of-principle experiments extend the capability of polarised light microscopy far beyond its common use and open the path to its deployment in conservation studies.  相似文献   
97.
Dr. Morgan discusses the recommended content of economics courses, describes several significant projects in economics education, and provides sources from which teachers may obtain complete reports of these projects.  相似文献   
98.
Although molecular-level details are part of the upper-secondary biology curriculum in most countries, many studies report that students fail to connect molecular knowledge to phenomena at the level of cells, organs and organisms. Recent studies suggest that students lack a framework to reason about complex systems to make this connection. In this paper, we present a framework that could help students to reason back and forth between cells and molecules. It represents both the general type of explanation in molecular biology and the research strategies scientists use to find these explanations. We base this framework on recent work in the philosophy of science that characterizes explanations in molecular biology as mechanistic explanations. Mechanistic explanations describe a phenomenon in terms of the entities involved, the activities displayed and the way these entities and activities are organized. We conclude that to describe cellular phenomena scientists use entities and activities at multiple levels between cells and molecules. In molecular biological research, scientists use heuristics based on these intermediate levels to construct mechanistic explanations. They subdivide a cellular activity into hypothetical lower-level activities (top-down approaches) and they predict and test the organization of macromolecules into functional modules that play a role in higher-level activities (bottom-up approaches). We suggest including molecular mechanistic reasoning in biology education and we identify criteria for designing such education. Education using molecular mechanistic reasoning can build on common intuitive reasoning about mechanisms. The heuristics that scientists use can help students to apply this intuitive notion to the levels in between molecules and cells.  相似文献   
99.
ABSTRACT

Students in senior pre-university education encounter difficulties in the application of mathematics into physics. This paper presents the outcome of an explorative qualitative study of teachers’ beliefs about improving the transfer of algebraic skills from mathematics into physics. We interviewed 10 mathematics and 10 physics teachers using a semi-structured questionnaire that was based on an algebraic transfer problem. Almost all teachers acknowledged this transfer problem and considered it to be important. We found a continuum of teachers’ beliefs about aspects influencing transfer, including beliefs on improving this transfer. Together with identified improvement aspects about coherent mathematics education, these may help reduce physics teachers’ frustrations who spend extra time on re-teaching mathematics. Teachers think that transfer does not happen, because students see both subjects as separate disciplines. Contrary to most physics teachers, most mathematics teachers do not feel the need to collaborate with physics teachers. We found two extreme, opposite beliefs about the transfer of algebraic skills into physics. An intermediate group believes that only an integrated approach can solve the transfer problem. Some of the teachers’ beliefs could be organised into a beliefs system. Further research could investigate to which extent such beliefs systems exist and which beliefs these contain.  相似文献   
100.
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