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   221篇
  免费   9篇
教育   188篇
科学研究   9篇
各国文化   8篇
体育   5篇
文化理论   2篇
信息传播   18篇
  2023年   2篇
  2022年   2篇
  2021年   4篇
  2020年   7篇
  2019年   8篇
  2018年   9篇
  2017年   11篇
  2016年   12篇
  2015年   8篇
  2014年   7篇
  2013年   46篇
  2012年   10篇
  2011年   4篇
  2010年   4篇
  2009年   9篇
  2008年   3篇
  2007年   7篇
  2006年   5篇
  2005年   4篇
  2004年   7篇
  2003年   5篇
  2002年   6篇
  2001年   1篇
  2000年   4篇
  1999年   3篇
  1998年   2篇
  1997年   3篇
  1996年   2篇
  1995年   3篇
  1994年   3篇
  1993年   3篇
  1992年   3篇
  1991年   1篇
  1989年   1篇
  1988年   2篇
  1987年   1篇
  1985年   1篇
  1984年   1篇
  1982年   2篇
  1981年   1篇
  1979年   2篇
  1977年   2篇
  1976年   3篇
  1975年   3篇
  1974年   1篇
  1970年   1篇
  1965年   1篇
排序方式: 共有230条查询结果,搜索用时 15 毫秒
11.
Students from rural areas face additional burdens, such as affordability, academic preparation, and lack of college-going resources that make seeking, enrolling, and attending college more difficult. Community colleges offer hope to achieve a college degree for many rural students, and well-developed articulation agreements can be one way of improving access for these students.  相似文献   
12.
13.
The age for starting school varies throughout the world, but is usually between the ages of 5 and 7 although nursery education is sometimes provided before then. For the purposes of this article, however, pre-school children are considered to be those up to the age of 5, which is the age at which schooling begins in the United Kingdom.Wherever an age is mentioned, in relation to a suitable toy, it is intended only as a general guide, for children vary to some extent in their rates of development. The differing economic situations, customs, cultures and environments of every country must also affect rates of growth, physical, mental and emotional.Toy designer, Member of the Industrial Society for Artists and Designers. Presenter and adviser on BBC television programmesMaking Toys andParents and Children. Free-lance lecturer and visiting lecturer to Southwark College, on play, toys and toy-making.  相似文献   
14.
15.
ABSTRACT

In many countries, collections of historic aircraft, conserved in Air and Space museums or local associations, reflect the importance of a national or local history. Mostly parked outdoors, aircraft suffer from significant corrosion requiring conservation operations. During renovation, metallic parts are often replaced by association members. This can lead to a major loss of information since industrial archives dealing with materials and processes do not always survive. However, if these elements can be considered, they could be a fundamental source of information on the materials originally used and of the technical history of aeronautics. This work reports a thorough study of aluminium-based alloy parts collected on a Breguet aeroplane dating from the 1950s, during its recent renovation. Thanks to an approach coupling multi-scale material characterisation and research in archives, information on the industrial knowledge is revealed. Several historic grades of aluminium-based alloys were found, namely A-U4G, A-U4G1, and A-U3G, depending on the role of the part. Similarly, different protective coatings were identified (anodic oxidation, primers, and paintings), depending on the role of the metallic part and its location in the plane. Knowledge of the materials from bulk metal to the coated surface is necessary for good conservation practices regarding aeronautical heritage artefacts. Related documents and archives also fundamentally help in understanding such complex artefacts.  相似文献   
16.
The 2017 virtual issue of the Health Information and Libraries Journal (HILJ) is published to link to the 12th International Congress on Medical Librarianship and the 2017 EAHIL Workshop taking place in Dublin, Ireland on 12–16 June 2017. The conference title is Diversity in Practice: integrating, inspiring and innovative and it is exploring how health science librarianship, in all its diversity, is integrating, inspiring and innovating practice. These themes have been used to compile this virtual issue, which contains published articles selected from HILJ from the June 2014 issue through to September 2016. The virtual issue mirrors the format of a regular issue of HILJ, namely a review article, six original articles and our three regular features: ‘Dissertations into Practice’, ‘International Perspectives and Initiatives’ and ‘Teaching and Learning in Action’. All articles included in this virtual issue are available free online.  相似文献   
17.
A major shortcoming of macro-spatial research undertaken to date in Israel pertains to the neglect of state investment-related measures and the extent to which they mediate unequal opportunities to learn (OTL) and educational opportunities between localities. In the present study, OTL refer to class size and high-school tracking patterns. Educational opportunities refer to two measures: the school system's holding power and access to educational credentials. Two specific questions were raised in this respect: first, we looked into the extent to which the size and ethnic stratification of Israeli localities, and their differential dependence on state financial schemes, affect available OTL and educational opportunities. Second, we examined how a locality's OTL affect educational opportunities. The data on which the present study is based are aggregated at locality level and refer to 89 localities, of which 21 were Arab and 78 were Jewish. Bentler's EQS Structural Equation Modeling (SEM) program was applied to test the research questions. The findings suggest that locality characteristics and dependence on state finance directly affect both OTL and educational opportunities. However, the school system's holding power and access to educational credentials is affected by differential mechanisms. On the one hand, locality-level variables and average class size significantly affect the school system's holding power. On the other hand, access to educational credentials is affected primarily by a locality's ethnic affiliation and its dependence on state funding. The implications of these findings for educational policy and reform are then discussed.  相似文献   
18.
This paper presents research findings on childrens’ responses to migratory separation and later reunion in Caribbean families and the needs of these families when parents migrate and leave their children behind. Implications of this type of separation on children, parents and surrogate caregivers are discussed. The challenges that counsellors in both the ‘sending’ and host countries face working with this population are also examined and suggestions made for psychosocial intervention and guidelines for counselling in both societies. The need for culturally competent counsellors to work with the growing population of immigrants in North America and Europe is indicated.  相似文献   
19.
20.
In this study, researchers compared the concordance of teacher-level effectiveness ratings derived via six common generalized value-added model (VAM) approaches including a (1) student growth percentile (SGP) model, (2) value-added linear regression model (VALRM), (3) value-added hierarchical linear model (VAHLM), (4) simple difference (gain) score model, (5) rubric-based performance level (growth) model, and (6) simple criterion (percent passing) model. The study sample included fourth to sixth grade teachers employed in a large, suburban school district who taught the same sets of students, at the same time, and for whom a consistent set of achievement measures and background variables were available. Findings indicate that ratings significantly and substantively differed depending upon the methodological approach used. Findings, accordingly, bring into question the validity of the inferences based on such estimates, especially when high-stakes decisions are made about teachers as based on estimates measured via different, albeit popular methods across different school districts and states.  相似文献   
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