全文获取类型
收费全文 | 1409篇 |
免费 | 40篇 |
国内免费 | 2篇 |
专业分类
教育 | 1040篇 |
科学研究 | 115篇 |
各国文化 | 28篇 |
体育 | 114篇 |
文化理论 | 19篇 |
信息传播 | 135篇 |
出版年
2022年 | 8篇 |
2021年 | 11篇 |
2020年 | 25篇 |
2019年 | 37篇 |
2018年 | 44篇 |
2017年 | 60篇 |
2016年 | 40篇 |
2015年 | 37篇 |
2014年 | 36篇 |
2013年 | 323篇 |
2012年 | 35篇 |
2011年 | 42篇 |
2010年 | 27篇 |
2009年 | 38篇 |
2008年 | 36篇 |
2007年 | 33篇 |
2006年 | 32篇 |
2005年 | 27篇 |
2004年 | 30篇 |
2003年 | 38篇 |
2002年 | 29篇 |
2001年 | 14篇 |
2000年 | 17篇 |
1999年 | 27篇 |
1998年 | 20篇 |
1997年 | 17篇 |
1996年 | 17篇 |
1995年 | 12篇 |
1994年 | 8篇 |
1993年 | 15篇 |
1992年 | 18篇 |
1991年 | 14篇 |
1990年 | 18篇 |
1989年 | 22篇 |
1988年 | 13篇 |
1987年 | 15篇 |
1986年 | 12篇 |
1985年 | 10篇 |
1984年 | 13篇 |
1983年 | 16篇 |
1982年 | 19篇 |
1981年 | 11篇 |
1980年 | 8篇 |
1979年 | 13篇 |
1978年 | 15篇 |
1976年 | 12篇 |
1975年 | 7篇 |
1973年 | 6篇 |
1970年 | 7篇 |
1964年 | 6篇 |
排序方式: 共有1451条查询结果,搜索用时 15 毫秒
201.
Philip J. Schluter Richard Audas Jesse Kokaua Brigid McNeill Barry Taylor Barry Milne Gail Gillon 《Child development》2020,91(1):e59-e76
Literacy success lays the foundation for children's later educational, health, and well-being outcomes. Thus, early identification of literacy need is vital. Using data from New Zealand's national preschool health screening program for fiscal years 2010/2011–2014/2015, demographic and health variables from 255,090 children aged 4 years were related to whether they received a literacy intervention in early primary school. Overall, 20,652 (8.1%) children received an intervention. Time-to-event analysis revealed that all considered variables were significantly related to literacy intervention (all p < .01), but the full model lacked reasonable predictive power for population screening purposes (Harrell's c-statistic = .624; 95% CI [.618, .629]). Including more direct literacy measures in the national screening program is likely needed for improvement. 相似文献
202.
Chen Chen Gerhard Sonnert Philip M. Sadler Dimitar Sasselov Colin Fredericks 《科学教学研究杂志》2020,57(6):879-910
Massive Online Open Courses (MOOCs) provide opportunities to learn a vast range of subjects. Because MOOCs are open to anyone with computer access and rarely have prerequisite requirements, the range of student backgrounds can be far more varied than in conventional classroom-based courses. Prior studies have shown that misconceptions have a huge impact on students' learning performance; however, no study has empirically examined the relationship between misconceptions and learning persistence. This study of 12,913 MOOC-takers examines how students' misconceptions about the upcoming course material affect course completion. Using a survival analysis approach, we found that, controlling for the score in a pre-course test, students holding more misconceptions had a higher dropout rate at the start of the course, an effect that diminished over time. Other student variables were found to have a positive impact on survival that persisted throughout the entire course: U.S. location, higher age, an intention to complete, better English skills, prior familiarity with the subject, motivation to earn a certificate, and score and time spent on the previous problem set (homework). By contrast, student gender, education level, number of previous MOOCs completed, and motivation to participate in online discussion forums did not affect survival. 相似文献
203.
204.
Philip M. Sadler 《科学教学研究杂志》1998,35(3):265-296
We stand poised to marry the fruits of qualitative research on children's conceptions with the machinery of psychometrics. This merger allows us to build upon studies of limited groups of subjects to generalize to the larger population of learners. This is accomplished by reformulating multiple choice tests to reflect gains in understanding cognitive development. This study uses psychometric modeling to rank the appeal of a variety of children's astronomical ideas on a single uniform scale. Alternative conceptions are captured in test items with highly attractive multiple choice distractors administered twice to 1250 8th through 12th-grade students at the start and end of their introductory astronomy courses. For such items, an unusual psychometric profile is observed—instruction appears to strengthen support for alternative conceptions before this preference eventually declines. This lends support to the view that such ideas may actually be markers of progress toward scientific understanding and are not impediments to learning. This method of analysis reveals the ages at which certain conceptions are more prevalent than others, aiding developers and practitioners in matching curriculum to student grade levels. This kind of instrument, in which distractors match common student ideas, has a profoundly different psychometric profile from conventional tests and exposes the weakness evident in conventional standardized tests. Distractor-driven multiple choice tests combine the richness of qualitative research with the power of quantitative assessment, measuring conceptual change along a single uniform dimension. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 265–296, 1998. 相似文献
205.
The aim of this study was to determine whether subtest scatter might be an indicator of learning disabilities (LDs), psychopathology, or of both, in a sample of normal adolescents. Subjects completed the WISC‐III and the MMPI‐A and then their scores for the WISC‐III subtests, verbal scatter (VScatter), performance scatter (PScatter), full scale scatter (FScatter) scores, perceptual organisation factor (PO), and the SCAD profiles were calculated. The MMPI‐A was scored and the clinical scales were extracted. The hypothesis that subtest scatter is associated with LDs was generally not supported. There was a relationship between subtest scatter and psychological disturbance in adolescent males, however the results for females were less clear. Further, high PScatter in adolescent males was associated with an MMPI‐A codetype 4‐2/2‐4, indicating tendencies toward depressive features, delinquent behavior, and possibly substance abuse, tendencies which are likely to lead to school failure. © 1999 John Wiley & Sons, Inc. 相似文献
206.
Corliss A. O'Bryan Philip G. Crandall Katrina Shores-Ellis Donald M. Johnson Steven C. Ricke John Marcy 《Journal of Food Science Education》2009,8(4):93-100
ABSTRACT: Food companies and supporting industries need inexpensive, revisable training methods for large numbers of hourly employees due to continuing improvements in Hazard Analysis Critical Control Point (HACCP) programs, new processing equipment, and high employee turnover. HACCP-based food safety programs have demonstrated their value by reducing the number and frequency of multimillion-dollar food recalls. The focus for the future must be proactive training of plant personnel to ensure continuous improvements in plant food safety and quality. In response to this need, we developed training modules focused on applying HACCP principles, quality aspects, and production information to individual poultry unit operations. Learning objectives were evaluated using discount usability testing techniques to optimize the delivery system and to ensure a satisfactory e-learning experience. Discount usability testing of this virtual orientation was successful in obtaining vast amounts of feedback. Usability issues with the training materials were identified. Expected completion times were not met by most participants, indicating that a change in the format of the course might be necessary, perhaps segmenting the modules into smaller sections to be reviewed independently of one another. Another suggestion by the evaluators was to include narration for the sections, which might in turn speed up the completion times. A navigation error was discovered by these users, as well as other critical errors in design. Other errors, such as font inconsistencies and page design changes, were also discovered by the participants. 相似文献
207.
Philip G. Altbach 《Asia Pacific Education Review》2009,10(1):15-27
The research university is a central institution of the twenty-first century—providing access to global science, producing
basic and applied research, and educating leaders of the academe and society. Worldwide, there are very few research universities—they
are expensive to develop and support, and the pressures of massification have placed priorities elsewhere. For developing
countries, research universities are especially rare, and yet they are especially important as key ingredients for economic
and social progress. This article argues for the importance of research universities in developing and middle-income countries
and points out some of the challenges that such institutions face. 相似文献
208.
Katherine Bell Steven William Glover Colin Brodie Anne Roberts Colette Gleghorn 《Health information and libraries journal》2009,26(2):136-142
Background: Within NHS North West England there are 24 primary care trusts (PCTs), all with access to different types of library services. This study aims to evaluate the impact the type of library service has on online resource usage. Methodology: We conducted a large‐scale retrospective quantitative study across all PCT staff in NHS NW England using Athens sessions log data. We studied the Athens log usage of 30 381 staff, with 8273 active Athens accounts and 100 599 sessions from 1 January 2007 to 31 December 2007. Results: In 2007, PCTs with outreach librarians achieved 43% penetration of staff with active Athens accounts compared with PCTs with their own library service (28.23%); PCTs with service level agreements (SLAs) with acute hospital library services (22.5%) and with no library service (19.68%). This pattern was also observed when we looked at the average number of Athens user sessions per person, and usage of Dialog Datastar databases and Proquest full text journal collections. Discussion: Our findings have shown a correlation of e‐resource usage and type of library service. Outreach librarians have proved to be an efficient model for promoting and driving up resources usage. PCTs with no library service have shown the lowest level of resource usage. 相似文献
209.
210.
China and India together account for almost 25% of the world’s postsecondary student population. Most of the enrolment growth
in the coming several decades will be in developing countries, and China and India will contribute a significant proportion
of that expansion, since China currently educates only about 20% and India 10% of the age cohort. Both countries are expanding
the higher education sector, while at the same time seeking to improve its quality. Challenges of funding, educating qualified
academics, and building a sustainable academic culture are significant. An emerging private higher education sector and developing
masters and doctoral programmes are additional pressures. Internationalization is a key factor as well, as both countries
seek to expand their global profile and develop strategies for international programmes. Also, higher education development
is central to future economic growth of these two of the world’s fastest growing economies. 相似文献