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   4496篇
  免费   66篇
  国内免费   2篇
教育   3240篇
科学研究   419篇
各国文化   45篇
体育   329篇
综合类   1篇
文化理论   47篇
信息传播   483篇
  2023年   38篇
  2022年   46篇
  2021年   91篇
  2020年   120篇
  2019年   203篇
  2018年   309篇
  2017年   273篇
  2016年   238篇
  2015年   144篇
  2014年   184篇
  2013年   884篇
  2012年   137篇
  2011年   113篇
  2010年   96篇
  2009年   100篇
  2008年   108篇
  2007年   88篇
  2006年   70篇
  2005年   66篇
  2004年   58篇
  2003年   49篇
  2002年   39篇
  2001年   27篇
  2000年   34篇
  1999年   38篇
  1998年   36篇
  1997年   25篇
  1996年   28篇
  1995年   26篇
  1994年   23篇
  1993年   28篇
  1992年   36篇
  1991年   33篇
  1990年   34篇
  1989年   32篇
  1988年   30篇
  1987年   20篇
  1986年   32篇
  1985年   29篇
  1984年   29篇
  1983年   23篇
  1982年   29篇
  1980年   24篇
  1979年   24篇
  1976年   21篇
  1967年   19篇
  1941年   19篇
  1939年   23篇
  1937年   41篇
  1936年   40篇
排序方式: 共有4564条查询结果,搜索用时 62 毫秒
21.
Few studies have identified individual differences in vocational knowledge or its association with career aspirations or expectations of children. We investigated whether individual differences in grade, gender, academic achievement, and SES predict levels of vocational knowledge, and further examined the relationship between vocational knowledge and career aspirations and expectations. Children in the fourth through seventh grades (N = 132) from two rural school districts were administered measures of vocational knowledge, expectations, and aspirations. The results of this study suggest no differences in vocational knowledge in groups differing in grade, gender, and SES; however, academic achievement was a significant predictor of vocational knowledge. Moreover, results of regression analysis demonstrated that vocational knowledge adds significantly to the prediction of career aspirations and expectations. These results contribute to the emerging literature exploring mechanisms involved in the career development of rural children.  相似文献   
22.
Tony Ribera, Sarah Fernandez, and Matt Gray apply a scholarly approach to assessing student learning in the cocurriculum.  相似文献   
23.
Researchers suggest there is an increasing apathy in the study of natural history in academic settings and in the scientific community. However, most studies of environmental knowledge do not address knowledge of local flora and fauna; they are concerned with the knowledge of environmental issues or broad ecological knowledge. Ecoliteracy established local natural history as fundamental to environmental knowledge and seeks to determine the knowledge of local environments and factors associated with that knowledge. This study investigated ecoliteracy in Mississippi, determining knowledge of local flora and fauna of undergraduate and graduate students at the largest universities. Ecoliteracy levels in Mississippi were low. Students had a rudimentary knowledge of local flora and fauna, despite coursework in natural history. Students majoring in wildlife and fisheries and biology had more advanced knowledge of local flora and fauna than non-biology majors. Students were most knowledgeable of reptiles and amphibians, and least of fish and endangered species. The number of environmental courses taken and environmental sensitivity were positively correlated with ecoliteracy, and were strong predictors of ecoliteracy. Ecoliteracy was influenced by coursework and experience with degree programs including fieldwork. Natural history knowledge was deficient at Mississippi universities. Researchers suggest reintroducing coursework focused on ecoliteracy.  相似文献   
24.
This account examines the action learning process adopted by Emerald Group Publishing Ltd., embedded in the organization through the in-company Emerald Academy. In case study format, the paper emphasizes that in order to align learning with organizational objectives joined up thinking and practice is needed beyond the learning and development function, with ownership taken of the process at all levels. To date the Emerald action learning corporate academy process is in its sixth year. It builds upon a tradition of management development through action learning which goes back to the early days of the company. Organizations seeking to develop a similar process would need to consider organizational commitment and readiness.  相似文献   
25.
Abstract: Food science laboratory courses are traditionally taught as a series of preplanned laboratories with known endpoints. In contrast, inquiry‐guided (IG) laboratories allow students to ask questions, think through problems, design experiments, then adapt and learn in response to unexpected results. This study examined the effects of converting the course, “Analytical Techniques in Food and Bioprocessing Sciences” from a traditional approach (2008 to 2010 data) to an IG approach (2011 data) by assigning teams of 2–3 students a food and a set of 5 analyses to conduct over the course of the semester. Students were required to choose and justify the use of specific methods for each analysis, as well as to develop a supply list and a budget for the semester‐long project. During the semester, students were required to post and discuss their weekly progress with the instructor, teaching assistants, and the rest of the class using an online discussion forum. At the end of the semester, students were required to present the results of their analysis in both oral and written formats. Overall course grades were significantly higher (P≤ 0.05) using IG in 2011 compared to 2010 and 2009, but not to 2008 grades. Numerical course evaluations for the instructor, overall course, and lab, as well as written course evaluations all significantly (P≤ 0.05) improved. This suggests that an IG approach may measurably improve student performance in terms of course grades and the ability to complete semester long projects. It may also increase student satisfaction with the course, as measured by numerical and written end of semester surveys.  相似文献   
26.
In this study, an electro-mechanical valve (EMV) system for the intake valve ofa fottr stroke, single cylinder, overhead valve and spark ignition (SI) engine was designed and constructed. An engine with the EMV system and a standard engine were tested to observe the effects of the EMV on engine performance and emissions at different speeds under full load. The EMV engine showed improved engine power, engine torque and break specific fuel consumption (BSFC). A 66% decrease in CO emissions was also obtained with the EMV system, but hydrocarbons (HC) and NOx emissions increased by 12% and 13% respectively.  相似文献   
27.
28.
Research has shown that both historically and currently there has been sex-differentiated staffing in American public schools, with a disproportionate number of female teachers at the elementary level. Concern long has been expressed regarding the impact this might have on the sex-role development of American children and the perpetuation of stereotypic staffing patterns. This article supports the hypothesis that psychologically androgynous individuals might be more likely than masculine or feminine individuals to base teaching level choice upon individual preference without regard for its stereotype as more appropriate for one sex than the other. Data collected from preservice teachers at Washington State University support this hypothesis. It was found that while feminine females were more apt to choose the elementary teaching level, masculine males were more apt to choose secondary teaching. In comparison, androgynous preservice teachers of both sexes were as likely to choose the elementary as secondary teaching level.  相似文献   
29.
Primary objective: Teacher evaluation is being revamped by policy-makers. The marginalized status of physical education has protected this subject area from reform for many decades, but in our current era of system-wide, data-based decision-making, physical education is no longer immune. Standardized and local testing, together with structured observation measures, are swiftly being mandated in the USA as required elements of teacher evaluation systems in an effort to improve school programs and student achievement. The purpose of this investigation was to document how this reform was initiated and the experiences of teachers, students and administrators, from three high school physical education programs, during initiation of this reform. Documenting how physical education programs respond to such reforms develops our understanding of top-down reform efforts and helps to identify conditions under which such reforms have the intended effect on physical education teachers and student learning in physical education.

Theoretical framework: Fullan’s three phases of school change has been used to analyze and guide school change efforts in several subject areas including physical education. The phases are initiation, implementation and institutionalization. This study is situated primarily within the first phase of school change, the initiation phase.

Methods and procedures: This study took place over a 21-month period in 3 suburban school districts in a northeast metropolitan area of the USA. Interviews with district physical education administrators, high school physical education teachers and students were conducted. Field notes of physical education classes, informal interviews and related artifacts including pre- and post-physical education assessments were collected. To ensure trustworthiness, several steps were taken including member checks, triangulation and peer review. The data were analyzed to find common themes and patterns using the constant comparative method.

Results: Several themes emerged: (1) changes in curriculum and assessment; (2) effect on administrators; (3) stakeholder apathy and (4) department collaboration.

Conclusion: Changes, although minor, did take place in the wake of this top-down teacher reform; however, additional research needs to be completed to determine whether or not these changes are meaningful or long lasting.  相似文献   

30.
The aim of this study was to examine the association between alcohol consumption, alcohol sponsorship in sports and preferences of sponsored sportspeople regarding sponsorships/consumption. We investigate the impact of alcohol sponsorship on sportspeople in the Australian population using a national survey of sportspeople (N?=?2367), representing a range of club and professional sports. The results show an association between alcohol sponsorship of sport and increased alcohol consumption among sports participants (i.e. ‘sportspeople’). Additionally, a preference for sponsored alcohol brands was found by sponsored sportspeople. Our research adds to the growing evidence for policy review of alcohol sponsorship of sports and extends prior studies investigating impacts of alcohol sponsorship upon sports participants by generalizing to a large, national sample of sportspeople.  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