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   1045篇
  免费   26篇
教育   743篇
科学研究   48篇
各国文化   11篇
体育   180篇
文化理论   30篇
信息传播   59篇
  2023年   10篇
  2022年   13篇
  2021年   18篇
  2020年   37篇
  2019年   70篇
  2018年   85篇
  2017年   76篇
  2016年   64篇
  2015年   50篇
  2014年   44篇
  2013年   224篇
  2012年   49篇
  2011年   22篇
  2010年   27篇
  2009年   15篇
  2008年   24篇
  2007年   19篇
  2006年   27篇
  2005年   17篇
  2004年   7篇
  2003年   14篇
  2002年   8篇
  2001年   9篇
  2000年   8篇
  1999年   5篇
  1998年   9篇
  1997年   7篇
  1996年   10篇
  1995年   10篇
  1994年   9篇
  1993年   7篇
  1992年   5篇
  1990年   4篇
  1989年   7篇
  1988年   5篇
  1987年   3篇
  1986年   3篇
  1985年   3篇
  1981年   4篇
  1980年   3篇
  1979年   2篇
  1978年   3篇
  1977年   3篇
  1976年   3篇
  1974年   5篇
  1973年   2篇
  1972年   5篇
  1969年   2篇
  1968年   2篇
  1956年   3篇
排序方式: 共有1071条查询结果,搜索用时 15 毫秒
871.
Historical buildings and castles that have been turned nowadays into museums, as an exhibition area for precious cultural heritage (CH) items, need more attention since they are CH objects by themselves. Moreover, the preservation techniques require often, significant interventions; however such changes are not always possible or are very limited. The aim of the present study was to investigate the influence of outdoor air pollution on the composition of particulate matter and gases inside the museum of Wawel Castle in Cracow, Poland. During this study a combination of micro and trace analysis techniques were applied, including energy dispersive X-ray fluorescence (EDXRF) and electron probe microanalysis (EPMA). An intensive transport of air pollutants coupled with accumulation of the particles inside the museum was noticed (considerably higher in winter than summer). A high content of carbon and organic matter agglomerated with inorganic particles was determined. Those particles are of special concern because of their adhesive properties and reactivity. It was also noted that the conditions inside the museum favour the reaction of the particles with gaseous pollutants. It was especially the case for nitrate particles.  相似文献   
872.
At latest in the upper school, physical education (PE) offers opportunities to deal with games and sport not only in a motor but also in a cognitive manner. The present paper asks if and under what conditions an instructional design integrating theory and practice in PE promotes meaningful learning and knowledge construction. It brings out the less considered cognitive learning potential of upper school PE and advances hypotheses about their occurrence. The results of the empirical study show that pupils in upper school PE already use learning activities that promote meaningful learning. It also shows that meaningful learning activities are restricted to a self-regulated and intrinsic learning motivation. Intrinsic learning motivation itself is highly dependent on the pupils’ academic self-concept in PE.  相似文献   
873.
From the perspective of Dual Coding Theory, comics facilitate comprehension of aspects beyond those of art, language and literature. Some authors and projects such as Manga Edutainment Project to Open New Worlds defend the use of manga (Japanese comics) as an educational resource for the teaching of different subjects, including history, society and culture. After the introduction, the paper carries out a brief review of the role of the teaching of values and socio-historical commitment in the work of Osamu Tezuka (1928–89). Finally, a discussion is carried out of the educational potential of his work Adolf in relation to questions about historical conscience, attention to identity conflicts and emotions, and to the delegitimization of war, leading us to recognize the educational potential of Tezuka’s work and its capacity to construct ethical values.  相似文献   
874.
875.
With a need to implement an agile software development methodology in government programs, this study was conducted to explore how organizations transitioned from a traditional waterfall software development method to agile methods. To accomplish this study, a case study research was utilized. A multimillion-dollar government-contracted program in the US was studied. The research findings reveal key challenges faced by organizations during the transition and the lessons learned that can be applied to future programs. Propositions for future research are also presented.  相似文献   
876.
877.
878.
The purpose of this study was to validate and cross-validate the Beunen-Malina-Freitas method for non-invasive prediction of adult height in girls. A sample of 420 girls aged 10-15 years from the Madeira Growth Study were measured at yearly intervals and then 8 years later. Anthropometric dimensions (lengths, breadths, circumferences, and skinfolds) were measured; skeletal age was assessed using the Tanner-Whitehouse 3 method and menarcheal status (present or absent) was recorded. Adult height was measured and predicted using stepwise, forward, and maximum R (2) regression techniques. Multiple correlations, mean differences, standard errors of prediction, and error boundaries were calculated. A sample of the Leuven Longitudinal Twin Study was used to cross-validate the regressions. Age-specific coefficients of determination (R (2)) between predicted and measured adult height varied between 0.57 and 0.96, while standard errors of prediction varied between 1.1 and 3.9 cm. The cross-validation confirmed the validity of the Beunen-Malina-Freitas method in girls aged 12-15 years, but at lower ages the cross-validation was less consistent. We conclude that the Beunen-Malina-Freitas method is valid for the prediction of adult height in girls aged 12-15 years. It is applicable to European populations or populations of European ancestry.  相似文献   
879.
There is a dearth of research and writing on women's cricket in South Africa. In an attempt to enhance understanding of the nature and effects of women's involvement in the game of cricket over the past 200 years, this essay offers a chronological account of the sport and the role women played in it. It draws on readings from the international scholarship on women's early involvement in sport, the fragments that have existed to date about women's cricket in South Africa and some newly discovered primary material from the 1950s onwards. The essay aims to provide a historical context and open a window for historians and social analysts into an area few knew existed before. There is now a distinctive history and subculture of cricket with multiple social dimensions for scholars to explore; here I offer some preliminary insights.  相似文献   
880.

Objectives:

The 170-year history of the library of the Royal Society of Medicine in Budapest illustrates both that political and cultural context matter and that “medical” libraries, if they survive, in due course become primarily “medical history” libraries.

Methods:

Two of the authors are on the staff of the Semmelweis Medical History Library; the third is a US scholar who makes frequent use of the library. Together, they avail themselves of archival and published materials—and personal experience with the collection—to establish the context that produced the original library, trace its evolution, and describe its present-day incarnation.

Results:

A tale of transformation emerges that reflects how collections are likely to change. The authors present events and individuals in the life of the Royal Society''s library and paint a picture of the value of today''s Semmelweis Medical History Library. Unique treasures in the collection are described.

Conclusion:

The story told here is of how a particular nineteenth-century library became a twenty-first–century institution. The authors establish its peculiarly Hungarian context and potential value to librarians and historians from outside Hungary. The overall message is that general medical libraries everywhere are perforce likely to become medical historical libraries over time.

Highlights

  • Context matters. The historical background of a library helps determine its functions and its future; shifts in modes of publishing affect and monetary concerns shape the development and preservation of an historical collection.
  • Libraries evolve. Medical libraries undergo a normal and profoundly useful transformation over time into repositories of medical history.
  • Books alone do not a library make: Libraries can and should be settings for continuing education, cultural affirmation, and assistance to scholars by preserving and making available for use a variety of sometimes rare archival and published materials.

Implications

  • Knowing the political and cultural background of a library is essential to understanding its history as well as its present-day status.
  • Preserving and expanding historical collections demands vigilance and creative management, especially under difficult fiscal and political circumstances. The loyal and diligent work of Hungarians and others who helped build and preserve this library can serve as a model for other threatened collections.
  • Sharing the story of a relatively unknown library''s development brings its general assets and unique resources to the attention of a wider audience of librarians and scholars. Few outside Hungary have previously had any way of knowing about the Semmelweis Medical History Library''s rich holdings.
  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