Externalities, technological complementarities and sustained economic growth     

Kenneth I. Carlaw  Richard G. Lipsey   《Research Policy》2002,31(8-9)

Externalities as conventionally defined miss many of the spillovers that are both causes and consequences of the technological changes that underlie economic growth. We introduce a much wider concept called technological complementarities. New general purpose technologies (GPTs) rejuvenate the growth process by creating technological complementarities, which are adequately measured neither by total factor productivity (TFP) nor by externalities. There would be major gains from technological change even if the returns on capital invested in innovation never exceeded the returns on investing in existing technologies so that there were neither externalities nor positive changes in TFP.  相似文献   

The role of social embeddedness in professorial entrepreneurship: a comparison of electrical engineering and computer science at UC Berkeley and Stanford   总被引：1，自引：0，他引：1  

Martin Kenney  W Richard Goe 《Research Policy》2004,33(5):691-707

Professorial entrepreneurship has recently attracted much attention. This paper draws upon historical research, a survey of faculty, and an Internet-based methodology for identifying professorial affiliations with entrepreneurial firms at two of the premier electrical engineering and computer science departments in the US, The University of California, Berkeley and Stanford. We employ the concept of “nested embeddedness” to explain why the faculty members in these two institutions have different levels of entrepreneurship and corporate involvement. EE&CS faculty at both universities were found to be socially embedded in departments and disciplines that supported and placed value on entrepreneurial activities. However, while being embedded in a university environment with a history of success and high level of support for entrepreneurship, EE&CS faculty at Stanford had a significantly greater level of corporate involvement, including the founding of start-ups. Although significantly less than Stanford, the level of corporate involvement among EE&CS faculty at Berkeley was also substantial. This suggests that being embedded in an academic department and disciplines with cultures that are supportive of entrepreneurial activity can help counteract the disincentives created by a university environment that is not strongly supportive of these activities.  相似文献   

The information requirements and information-seeking behaviours of health and social care professionals providing care to children with health care needs: a pilot study     

Jackson R  Baird W  Davis-Reynolds L  Smith C  Blackburn S  Allsebrook J 《Health information and libraries journal》2007,24(2):95-102

OBJECTIVES: The objectives of this work were to identify the sources of information currently received, information-seeking behaviours, information requirements and preferences for future information provision amongst health and social care professionals providing care to children with health care needs. METHODS: Data were collected using a cross-sectional postal questionnaire survey. RESULTS: A wide range of information resources was reported as being available to professionals. However, a large proportion of respondents found it necessary to perform additional searches for information, suggesting that current resources were not satisfying their needs. The majority of professionals reported a preference for electronic formats, whilst a smaller proportion preferred hard copy materials. Participants promoted the use of informal networks as a means of support and exchange of information. CONCLUSION: Supplementing the information that is provided in electronic and hard copy formats, by enhancing informal networks, may be the most effective way of meeting the information needs of this group of professionals.  相似文献   

Focus-on-form instructional methods promote deaf college students' improvement in English grammar     

Berent GP  Kelly RR  Aldersley S  Schmitz KL  Khalsa BK  Panara J  Keenan S 《Journal of deaf studies and deaf education》2007,12(1):8-24

Focus-on-form English teaching methods are designed to facilitate second-language learners' noticing of target language input, where "noticing" is an acquisitional prerequisite for the comprehension, processing, and eventual integration of new grammatical knowledge. While primarily designed for teaching hearing second-language learners, many focus-on-form methods lend themselves to visual presentation. This article reports the results of classroom research on the visually based implementation of focus-on-form methods with deaf college students learning English. Two of 3 groups of deaf students received focus-on-form instruction during a 10-week remedial grammar course; a third control group received grammatical instruction that did not involve focus-on-form methods. The 2 experimental groups exhibited significantly greater improvement in English grammatical knowledge relative to the control group. These results validate the efficacy of visually based focus-on-form English instruction for deaf students of English and set the stage for the continual search for innovative and effective English teaching methodologies.  相似文献   

Identifying future scientists: predicting persistence into research training     

McGee R  Keller JL 《CBE life sciences education》2007,6(4):316-331

This study used semistructured interviews and grounded theory to look for characteristics among college undergraduates that predicted persistence into Ph.D. and M.D./Ph.D. training. Participants in the summer undergraduate and postbaccalaureate research programs at the Mayo Clinic College of Medicine were interviewed at the start, near the end, and 8–12 months after their research experience. Of more than 200 themes considered, five characteristics predicted those students who went on to Ph.D. and M.D./Ph.D. training or to M.D. training intending to do research: 1) Curiosity to discover the unknown, 2) Enjoyment of problem solving, 3) A high level of independence, 4) The desire to help others indirectly through research, and 5) A flexible, minimally structured approach to the future. Web-based surveys with different students confirmed the high frequency of curiosity and/or problem solving as the primary reason students planned research careers. No evidence was found for differences among men, women, and minority and nonminority students. Although these results seem logical compared with successful scientists, their constancy, predictive capabilities, and sharp contrast to students who chose clinical medicine were striking. These results provide important insights into selection and motivation of potential biomedical scientists and the early experiences that will motivate them toward research careers.  相似文献   

Teachers' education, classroom quality, and young children's academic skills: results from seven studies of preschool programs   总被引：10，自引：0，他引：10  

Early DM  Maxwell KL  Burchinal M  Alva S  Bender RH  Bryant D  Cai K  Clifford RM  Ebanks C  Griffin JA  Henry GT  Howes C  Iriondo-Perez J  Jeon HJ  Mashburn AJ  Peisner-Feinberg E  Pianta RC  Vandergrift N  Zill N 《Child development》2007,78(2):558-580

In an effort to provide high-quality preschool education, policymakers are increasingly requiring public preschool teachers to have at least a Bachelor's degree, preferably in early childhood education. Seven major studies of early care and education were used to predict classroom quality and children's academic outcomes from the educational attainment and major of teachers of 4-year-olds. The findings indicate largely null or contradictory associations, indicating that policies focused solely on increasing teachers' education will not suffice for improving classroom quality or maximizing children's academic gains. Instead, raising the effectiveness of early childhood education likely will require a broad range of professional development activities and supports targeted toward teachers' interactions with children.  相似文献   

Three universities in Georgia, Kazakhstan and Kyrgyzstan: the struggle against corruption and for social cohesion     

Stephen P. Heyneman 《Prospects》2007,37(3):305-318

Universities may contribute to a nation’s social cohesion through both direct and indirect means. In their syllabi they may include techniques necessary for understanding complex social problems. Faculty may model good behaviour in terms of listening and understanding points of view that may contradict their own. University administrators may illustrate ways to lead honourably, which can enhance the chances for achieving consensus with respect to future dilemmas. This project assessed typical areas of university tension, including academic freedom, equity of participation and academic honesty. Three different universities were chosen as sites for faculty interviews—a foreign private university in Kyrgyzstan, a flagship state university in Georgia, and a regional teacher training college recently upgraded to university status in Northeast Kazakhstan. Results suggest that the single most important arena wherein universities can influence social cohesion in these countries is the manner by which they address education corruption. The paper reproduces the statements of those faculty members who participate in corruption as well as those who refuse to participate. It concludes with some predictions about the future of the relationship of higher education to social cohesion.

Stephen P. HeynemanEmail:

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Stephen P. Heyneman   received his PhD in comparative education from the University of Chicago in 1976. He served the World Bank for 22 years. Between 1976 and 1984 he helped research education quality and design policies to support educational effectiveness. Between 1984 and 1989 he was in charge of external training for senior officials world wide in education policy. Between 1989 and 1998, he was responsible for education policy and lending strategy, first for the Middle East and North Africa and later for the 27 countries of Europe and Central Asia. In July 2000 he was appointed professor of International Education Policy at Vanderbilt University. Current interests include the effect of higher education on social cohesion, the international trade in education services and the economic and social cost to higher education corruption.  相似文献   

Beyond nature-nurture     

Weinberg RA 《Monographs of the Society for Research in Child Development》2007,72(3):145-149

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Reconsidering the Character and Role of Inquiry in School Science: Analysis of a Conference   总被引：2，自引：1，他引：1  

Richard Grandy  Richard A. Duschl 《Science & Education》2007,16(2):141-166

We summarize a conference on scientific inquiry bringing together science educators, cognitive scientists and philosophers of science with three goals:

1.	to establish how much consensus exists about scientific inquiry,
2.	to discuss implications of that consensus for teaching science,
3.	to identify areas where consensus is lacking to establish where further research and discussion would be most valuable.

This research was supported by NSF grant ESIE #0343196 awarded to the authors. The opinions expressed in this article are those of the authors and do not necessarily reflect the views of the National Science Foundation. Paper presented at the International History and Philosophy of Science and Science Teaching Group meeting in Leeds, England July 15–18, 2005.  相似文献   

Inclusive education is not dead,it just smells funny     

Stephen J. Ball 《British Journal of Educational Studies》2019,67(2):277-278

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