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Eric Von Hippel 《Research Policy》1982,11(2):95-115
It has been empirically observed that, in some industries product users are the most frequent sources of product innovations while, in other industries, product manufacturers are. I hypothesize that such differences are caused by differences in the ability of these two “functional” categories of innovators to appropriate innovation benefit. I explore this hypothesis by examining the real-world effectiveness of mechanisms (such as patents and lead time) used for the appropriation of innovation benefit and the dependence of this effectiveness on the functional relationship between innovator and innovation. 相似文献
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Ruth Von Blum 《Journal of Science Education and Technology》1992,1(2):121-134
Explorations in Middle School Science is a set of 72 computer-simulated laboratory lessons in life, earth, and physical Science for grades 6–9 developed by Jostens Learning Corporation with grants from the California State Department of Education and the National Science Foundation.3 At the heart of each lesson is a computer-simulated laboratory that actively involves students in doing science improving their: (1) understanding of science concepts by applying critical thinking to solve real problems; (2) skills in scientific processes and communications; and (3) attitudes about science. Students use on-line tools (notebook, calculator, word processor) to undertake in-depth investigations of phenomena (like motion in outer space, disease transmission, volcanic eruptions, or the structure of the atom) that would be too difficult, dangerous, or outright impossible to do in a live laboratory. Suggested extension activities lead students to hands-on investigations, away from the computer. This article presents the underlying rationale, instructional model, and process by whichExplorations was designed and developed. It also describes the general courseware structure and three lesson's in detail, as well as presenting preliminary data from the evaluation. Finally, it suggests a model for incorporating technology into the science classroom. 相似文献
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Von Jessee 《Parenting, science and practice》2018,18(1):28-44
Objective. The present study looks at predictors that may be associated with father–child relationship quality and whether relationship quality appears to be transmitted across generations. Design. This study includes 2,970 U.S. families who participated in the Fragile Families and Child Well-Being Study. Structural equation modeling was used to assess associations between fathers’ relationship with paternal grandfathers (PGF) during their own childhood and when their own children are 1 year old, father involvement at age 1, and child reports of father-child relationship quality at age 9. Results. Paternal grandfathers involvement with fathers during childhood was positively associated with the father-paternal grandfathers relationship at child age 1, which in turn was associated with greater father involvement at age 1. More father involvement at age 1 was associated with child reports of better father-child relationships at age 9. The pathways from paternal grandfathers involvement during fathers’ childhood and father–paternal grandfathers relationships at age 1 to father–child relationship quality at age 9 were fully mediated by father involvement at age 1. Conclusions. Patterns of father involvement and the quality of father–child relationships tend to be passed down across generations. To ensure an active, positive father involvement and its associated benefits for children, parenting interventions should focus promoting positive fathering behaviors to promote positive relationships with children in their own and future generations. 相似文献
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In this paper, we discuss methodological issues that emerged as we worked through a small empirical research project, ‘Engaging Aboriginal students in education through community empowerment’. Recent national policy statements (see, for example, MCEETYA 2000, NBEET 1995) argue the importance of education/research that keeps the locus of control within the Aboriginal community as a means to further the goal of self-determination and improve educational outcomes. In keeping with these recommendations, our project aimed to challenge assimilationist frameworks and sought to ‘empower’ members of the local Aboriginal community through participation in the project. 相似文献
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In a series of laboratory studies, mechanical engineers and engineering students with different levels of experience and knowledge designed a device. As a starting point, the numerous ways of solving the problem were classified. Secondly, a model was tested which explained differences in designing as an interaction of domain-specific and heuristic competence. Thirdly, individual characteristics, marking not only the ways of proceeding in design, but also in other complex situations, are considered as a designer's personal style. The article closes with some hypotheses about the development of differences in the use of strategies, competence and style. 相似文献
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Von Ogden Vogt 《Religious education (Chicago, Ill.)》2013,108(10):986-992
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Moira Von Wright 《欧洲师范教育杂志》1997,20(3):257-266
This article discusses the encounters between the changing expectations on the teacher role, teacher education and Swedish student teachers’ beliefs about their role as teachers, with special emphasis on the socialisation process of the pupils and the teacher's possible influence on it. The discussion is based on two empirical studies among Swedish compulsory school student teachers (M. von Wright, (1996) Propedeusis? Om motet mellan lärarstuderande och lärarutbildningen, in: Grundskollärarutbüdningen 1995. En utvärdering. Högskoleverkets rapportserie 1996:1 R.; M. von Wright (1997) Socialisationsprocessen. Metaforer och synsätt hos blivande lärare. Licentiatuppsats. Lärarhögskolan i Stockholm). The results show that student teachers when they enter their education on the one hand tend to carry with them explicit expectations which strongly reflect the values of what is considered pedagogically correct. At the same time students express implicit beliefs and underlying conceptions of human development, which in many cases are incoherent. During teacher education the pedagogically correct beliefs might become replaced, but implicit beliefs as affinity to certain pedagogical discourses are not changed or brought to awareness unless they are seriously challenged and problematised. Yet these beliefs direct the students’ attention. Changing demands on the teacher role bring about expectations on a shift in thinking about teaching and learning. Teacher education and educators can play important roles in making the students aware of their everyday beliefs and eventually change them. 相似文献