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   649篇
  免费   11篇
  国内免费   3篇
教育   468篇
科学研究   64篇
各国文化   7篇
体育   67篇
文化理论   12篇
信息传播   45篇
  2022年   7篇
  2021年   9篇
  2020年   15篇
  2019年   19篇
  2018年   30篇
  2017年   17篇
  2016年   20篇
  2015年   19篇
  2014年   17篇
  2013年   109篇
  2012年   17篇
  2011年   17篇
  2010年   16篇
  2009年   16篇
  2008年   14篇
  2007年   10篇
  2006年   10篇
  2005年   13篇
  2004年   15篇
  2003年   13篇
  2002年   9篇
  2001年   9篇
  1998年   10篇
  1997年   6篇
  1995年   7篇
  1993年   4篇
  1992年   5篇
  1991年   7篇
  1990年   8篇
  1989年   6篇
  1988年   6篇
  1986年   7篇
  1985年   8篇
  1984年   6篇
  1983年   4篇
  1982年   12篇
  1981年   7篇
  1980年   6篇
  1979年   7篇
  1978年   15篇
  1977年   5篇
  1976年   9篇
  1975年   4篇
  1974年   4篇
  1972年   5篇
  1971年   6篇
  1969年   9篇
  1959年   5篇
  1957年   7篇
  1956年   4篇
排序方式: 共有663条查询结果,搜索用时 312 毫秒
51.
Why to teach mathematics so as to be useful   总被引:1,自引:1,他引:0  
  相似文献   
52.
53.
Entrepreneurship: Exploring the knowledge base   总被引:1,自引:0,他引:1  
Entrepreneurship research has a long tradition and since the 1980s the field has grown significantly. In this study we identify the ‘knowledge producers’ who have shaped the field over time and their core entrepreneurship research works. A unique database consisting of all references in twelve entrepreneurship ‘handbooks’ (or state-of-the-art books) has been developed. The chapters in these handbooks were written by experts within the field, and it can be assumed that the most frequently cited references represent ‘core knowledge’ with relevance to entrepreneurship research.From our analysis, it appears that entrepreneurship is a rather changeable field of research, closely linked to disciplines such as ‘management studies’ and ‘economics’. Over time, the field has become more formalized with its own core knowledge, research specialities and an increasing number of ‘insider works’. However, it is still based on some fairly old theoretical frameworks imported from mainstream disciplines, although during the last decade we have seen the emergence of a number of new field-specific concepts and theories. We argue that to successfully develop entrepreneurship research in the future, we need to relate new research opportunities to earlier knowledge within the field, which calls for a stronger ‘knowledge-based’ focus. We would also like to see greater integration between the fields of entrepreneurship and innovation studies in the future.  相似文献   
54.
This paper addresses the challenge of striking a balance between, on one hand, mitigating uncertainty through the existence of systematic processes and structures and, on the other, stimulating creativity through allowable variation in work processes and structures. Both objectives are fundamental aspects of product development work. Our main finding is that both objectives can be achieved simultaneously. We introduce trust as a mediating variable. We show first, that being systematic in the processes for obtaining information and applying explicit organizational rules and structures in product development work creates an atmosphere of trust in the organization. Second, we show that trust increases creativity. The paper contributes to an understanding of how and why trust is important in product development organizations and of how trust can be actively managed. Above all, the paper contributes to the understanding of how uncertainty and creativity should be managed in organizations conducting product development.  相似文献   
55.
Wrist injuries are frequently observed after falls in snowboarding. In this study, laboratory experiments mimicking forward and backward falls were analysed. In six different falling scenarios, participants self-initiated falls from a static initial position. Eighteen volunteers conducted a total of 741 trials. Measurements were taken for basic parameters describing the kinematics as well as the biomechanical loading during impact, such as impact force, impact acceleration, and velocity. The effective mass affecting the wrist in a fall also was determined. The elbow angle at impact showed a more extended arm in backward falls compared to forward falls, whereas the wrist angle at impact remained similar in forward and backward falls. The study results suggest a new performance standard for wrist guards, indicating the following parameters to characterize an impact: an effective mass acting on one wrist of 3-5 kg, an impact angle of 75 degrees of the forearm relative to the ground, and an impact velocity of 3 m/s.  相似文献   
56.
BACKGROUND: Information technology (IT) has slowly been implemented in many health-care organizations (i.e. hospitals). The use of computers has advanced to home care and long-term facilities. Consequently, it is important that nurses are able to demonstrate competence and feel confident in the use of IT. Yet, research has reported that nursing students have varying degrees of competence and experience with IT. AIMS: The purpose of this study was to ascertain nursing students' and nursing educators' self-reported attitudes, skills and experiences using IT. METHODS: Data were collected through a written survey distributed and completed by 247 nursing students (45 of whom were registered nurses who participated in extension courses) and 52 staff members from the nursing faculty at a university in Sweden. RESULTS: Two-thirds of the students and 92% of the nursing educators had access to the Internet from their homes. Of the students, 71% identified their IT skills as being sufficient for their current or future work as a registered nurse. Nurse educators were less confident in the students' ability, reporting that only 29% of nursing students had sufficient IT skills. Comparatively, 48% of the nursing educators believed that they themselves had sufficient IT skills for their role as a nurse educator. CONCLUSIONS: It is important that nursing students have basic IT skills and are familiar with e-mail, word-processing and various databases on the World Wide Web. Findings indicate that participants had a deficit in these skills, suggesting the need to integrate IT into the nursing curriculum.  相似文献   
57.
58.
Book reviews     
H.R. Kells Self‐Study Processes: A Guide to Self‐Evaluation in Higher Education (4th Edition). Phoenix, AZ: The Oryx Press, 1995. Paperback. ISBN 0 89774 903 0 Price $34.95 (North America) 194pp

David Warner and David Palfreyman (eds) Higher Education Management, The Key Elements. Buckingham: The Society for Research on Higher Education and Open University Press, 1996. Paperback. ISBN 0 335 19569 5 Price £19.99. 239 pages.  相似文献   
59.
A double-blind randomized controlled trial of n-3 long-chain polyunsaturated fatty acid (n-3 LCPUFA) supplementation or matching placebo during third trimester of pregnancy was conducted within the COPSAC2010 mother-child cohort consisting of 736 women and their children. The objective was to determine if maternal n-3 LCPUFA pregnancy supplementation affects offspring neurodevelopment until 6 years. Neurodevelopment was evaluated in 654 children assessing age of motor milestone achievement, language development, cognitive development, general neurodevelopment, and emotional and behavioral problems. Maternal n-3 LCPUFA supplementation during pregnancy improved early language development and reduced the impact of emotional and behavioral problems. The n-3 LCPUFA supplementation was in boys associated with the earlier achievement of gross motor milestones, improved cognitive development, and a reduced impact of emotional and behavioral problems.  相似文献   
60.
Neoliberalism has become a highly dominating and taken-for-granted way of organising the university sector around the world. In the critical educational literature, this market-based rationality has been scrutinised in detail over the past decades. However, rather scant attention has been directed to how university managers and administrators, apart from setting up quasi-markets, may intervene more directly to give the invisible hand of the market a helping hand. Aiming to address this lacuna, the purpose of the current article is to develop an empirically grounded taxonomy of different types of such interventions, and to theorise them in terms of the different facets of the neoliberal milieu that they reproduce and the various forms of subjectivising work among academics that they seek to engender. We do so by means of a qualitative study of so-called ‘Grants Offices’ at three Swedish universities. The findings arguably add to and problematise our understanding of how neoliberal markets work in academia in three different ways. First, while extant research has noted that university managers and administrators may intervene beyond the setting up of neoliberal markets per se, our study is to our knowledge the first one that identifies and systematises a broad array of such interventions. Second, it problematises the view of neoliberal markets as a form of monolithic entity that produces a uniform competitive pressure on academics. Third, and related, it furthers our understanding of the type of subjectivity that competitive milieus are assumed to bring about.  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