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   206篇
  免费   3篇
教育   159篇
科学研究   8篇
各国文化   1篇
体育   15篇
文化理论   2篇
信息传播   24篇
  2023年   2篇
  2020年   5篇
  2019年   5篇
  2018年   5篇
  2017年   8篇
  2016年   4篇
  2015年   3篇
  2014年   7篇
  2013年   48篇
  2012年   3篇
  2011年   5篇
  2009年   3篇
  2008年   8篇
  2007年   5篇
  2006年   7篇
  2005年   5篇
  2004年   2篇
  2003年   4篇
  2002年   3篇
  2001年   1篇
  1998年   3篇
  1997年   2篇
  1996年   5篇
  1995年   3篇
  1993年   2篇
  1992年   3篇
  1991年   1篇
  1990年   2篇
  1988年   2篇
  1987年   5篇
  1986年   1篇
  1985年   1篇
  1984年   3篇
  1983年   1篇
  1982年   2篇
  1981年   3篇
  1980年   6篇
  1979年   8篇
  1978年   2篇
  1977年   3篇
  1976年   1篇
  1975年   1篇
  1974年   5篇
  1973年   1篇
  1971年   1篇
  1969年   1篇
  1966年   1篇
  1964年   2篇
  1960年   1篇
  1959年   1篇
排序方式: 共有209条查询结果,搜索用时 244 毫秒
101.
Academic spin-offs often lack business expertise, face uncertainties regarding their innovation and their markets, and do not have a clear idea of how their product will create value. In spite of this vagueness, academic entrepreneurs must articulate a business model and rapidly establish trustworthy relationships with potential users, purchasers and capital investors. One may thus wonder how their technology development process is influenced by the long-term expectations of their putative customers as well as the short-term requirements of capital investors? This longitudinal case study examines how the business models of three Canadian health technology spin-offs sought to address the value expectations of clinical users and capital investors, how tensions were resolved, and the impact this had on technology design. We describe the synergistic readjustments, drastic reconfiguration and mismatch between business model and technology design we observed. Our discussion highlights the mediating mechanisms by which business models and technology design influence each other, clarifying why the initial value proposition of the spin-offs was either refined or reframed. Beyond confirming the importance of differentiating business models in the health technology industry, our study suggests that it is not only who makes decision that matters, but also how stakeholders’ value expectations get embedded in a spin-off's value proposition.  相似文献   
102.
Outcomes of interviews with seven educational psychologists, focused on issues of epistemological and ontological positioning, are reported. The interviews were conducted within a qualitative, biographical research paradigm which examines the ways in which a person’s meaning-making is impacted upon by all aspects of their life experience. Thematic analysis suggests most participants are ambivalent about the scientific basis of their work and the contribution of peer reviewed research to their practice, and they regard the utility or social value of their professional practice as more important than its congruence with a recognised evidence base. This standpoint is compared to the philosophical position of pragmatism, which resists the assumptions of realist perspectives and contests the primacy of scientific methodology and methods in the establishment of knowledge claims. Implications for the professional practice of educational psychologists beyond the present study are discussed.  相似文献   
103.
104.
It is assumed that a perfect balance between student academic achievement and the quality of the university they attend is beneficial both for students and higher education institutions (HEIs). Matching theory predicts the existence of perfect match between the two groups in the absence of transaction costs associated with university enrolment. However, in this study we show cases of mismatch situations in Russia under the Unified State Exam—the standardised student admission mechanism. The reasons for minimal transaction costs and the emergence of unequal access to HEIs were studied. Based on data on Moscow high school graduates who entered university, the determinants of the mismatch between the quality of universities and applicant abilities were assessed. Whilst overall favourable matching results are established, we show that individual student achievement results are subject to the influence of school and family characteristics. Thus, inequality of access can be formed at stages preceding higher education enrolment.  相似文献   
105.
黄金时间是每晚6点到10点这段时间,在这段时间里公众大多在看电视。黄金时间的商业广告费用最高,每分钟高达上百万美元。当你在黄金时间里不再盯着别人通过专业技能大把赚钱,而是开始行动,去实现自己的梦想和目标,那么你在成功的道路上就会取得长足的进步。  相似文献   
106.
107.
108.
This paper addresses the nature of governors in the governance of further education colleges in an English context. It explores the complex relationship between governors (people/agency), government (policy/structure) and governance (practice), in a college environment. While recent research has focused on the governance of schooling and higher education there has been little attention paid to the role of governors in the lifelong learning sector. The objective of the paper is to contribute to the debate about the purpose of college governance at a time when the Learning and Skills Council commissioning era ends and new government bodies responsible for further education and training, including local authorities, arrive. The paper analyses the nature of FE governance through the perspectives and experiences of governors, as colleges respond to calls from government for greater improvement and accountability in the sector. What constitutes creative governance is complex and controversial in the wider framework of regulation and public policy reform. As with other tricky concepts such as leadership, professionalism and learning, college governance is best defined in the contexts, cultures and situations in which it is located. College governance does not operate in a vacuum. It involves governors, chairs, principals, professionals, senior managers, clerks, community, business and wider agencies, including external audit and inspection regimes. Governance also acts as a prism through which national education and training reforms are mediated, at local level. While governing bodies are traditionally associated with the business of FE—steering, setting the tone and style, dealing with finance, funding, audit and procedural matters—they are increasingly being challenged to be more creative and responsive to the wider society. Drawing on a recent case study of six colleges, involving governors and key policy stakeholders, this paper explores FE governance in a fast changing policy environment.  相似文献   
109.
The injunction to innovate which has permeated our societies in the last few decades has had a significant impact on engineers and their training. The idea of progress has since taken a back seat to the quest for innovation which saves time, space and reduces aims to short term performance objectives. However, marked by the technologism and productivism of the 20th century, the idea of innovation has also absorbed the new principles of sustainability and responsibility which have imposed themselves upon engineering research and activities in a henceforth internationalised world. It is within this context that engineer training institutions have sought to counter the injunctions to innovation and the stresses and strains that they produce. Based on three studies carried out in Europe and in several developing countries in North Africa and South East Asia, this article examines the curricula the institutions have implemented in order to observe current trends in innovation training initiatives in relation to locally‐perceived expectations and requirements. We have observed that technologism and productivism, which are still very present in the principles which guide European engineer training, are in competition with the principles of low‐cost engineering which satisfies user requirements and respects environmental constraints. As for the pedagogical initiatives, the phenomena of standardisation and commodification of higher education have led to the development of active learning (projects, problem‐based learning, fablabs, etc.). However, studies demonstrate that pedagogical orientation depends on how innovation is conceptualised and varies according to the scale of the educational institutions. A closer examination of the concepts of innovation reveals the epistemological issues concerning the way the engineering problems have been constructed.  相似文献   
110.
The aim of this investigation was to define the effectiveness of non-contact drying using ultrasonic vibrations. Disk radiators were used for carrying out experiments, and a special drying chamber was designed to provide resonant amplification of ultrasonic vibrations (from 130 to 150 dB). Drying of ginseng and other vegetables demonstrated that the application of ultrasonic vibrations reduced power inputs by 20% in comparison with convective drying. It also led to a decrease of 6% in final moisture content, if the duration of drying was constant. The level of intensification of ultrasonic drying was high (up to 50 g for 1 kg of drying material), which helped to lower the temperature of the drying agent and improve the quality of the dried products.  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