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How top management team diversity affects innovativeness and performance via the strategic choice to focus on innovation fields 总被引：1，自引：0，他引：1
Past innovation research has largely neglected potential effects of corporate governance issues on strategic choices, and thereby on innovation management outcomes. The theory of upper echelon implies that strategic choices result from idiosyncrasies of top management teams (TMT). Building on this theory, we hypothesize that TMT diversity enhances firm performance by facilitating an innovation strategy that increases the firm's new product portfolio innovativeness. Our findings support the relevance of considering a corporate governance view for explaining innovation outcomes. Empirically, we can show that TMT diversity has a strong impact on the strategic choice of firms to focus on innovation fields. Such focus then drives new product portfolio innovativeness and firm performance. As corporate governance arrangements thus seem relevant in the context of innovation management, we can derive implications for both policy makers and innovation researchers. 相似文献
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Isabelle Hugener Christine Pauli Kurt Reusser Frank Lipowsky Katrin Rakoczy Eckhard Klieme 《Learning and Instruction》2009,19(1):66-78
Based on a coding of 39 videotaped three-lesson units on the introduction to the Pythagorean Theorem, three teaching patterns were identified: lecturing, developing based on a problem, and discovery based on a problem. The analysis showed no effect of the teaching patterns on student achievement, whereas effects were discovered on students' perceived learning quality. The discovery teaching pattern had negative effects on the emotional quality of learning. However, this pattern exhibited high degree of externally rated cognitive activation. The lecturing approach to the introduction to the Pythagorean Theorem supported students' self-perceived understanding. 相似文献
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This paper analyses whether strategic motives for patenting influence the characteristics of companies’ patent portfolios. We use the number of citations and oppositions to represent these characteristics. The analysis is based on survey data from German companies, which are combined with EPO data covering applications from 1991 to 2000. We find clear evidence that the companies’ patenting strategies are related to the characteristics of their patent portfolios. First, companies using patents in the traditional way to protect their technological knowledge base receive a higher number of forward citations for their patents. Second, the motive of offensive - but not of defensive - blocking is related to a higher incidence of oppositions, whereas companies using patents as bartering chips in collaborations receive fewer citations and fewer oppositions to their patents. 相似文献
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Consolidation of paint on stained glass windows: Comparative study and new approaches 总被引：2，自引：0，他引：2
Stained glass windows belong to the most precious pieces of art in many European countries. Examples of heavily endangered paint on glass are reported in the literature and mainly related to condensation effects and air pollution, as stained glass windows preferably remain in their original architectural surrounding. Several surface coatings and paint treatments have been proposed to consolidate and protect degraded paint. Very often, the selection of the materials is based more on practical aspects than on scientific research. This study concerns the comparison of some traditional, modern and newly developed consolidants for the preservation of historic glass paintings. Experiments have been carried out with model painted glass samples simulating weathering phenomena of originals. Traditional materials like Paraloid B72, modern ones like SZA (proposed by the Fraunhofer-Institut für Silicatforschung, ISC), and three new consolidants prepared by the sol–gel method and based on different hybrid organic–inorganic alkyl-alkoxysilane systems have been considered. The adhesion, penetration, stability, hydrophobicity, mechanical and chemical resistance are properties and requirements tested to prove their effectiveness and range of use. The three new materials developed in this study for the consolidation of paint on glass have the potential to offer alternatives to existing materials. Nevertheless, further research is necessary before their application in restoration workshops can be recommended. A strategic approach is requested to avoid risks for these valuable historical originals and to contribute to the long-term preservation of the paint on stained glass windows in their original sites. 相似文献
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Social media open up multiple options to add a new dimension to learning and knowledge processes. Particularly, social networking sites allow students to connect formal and informal learning settings. Students can find like-minded people and organize informal knowledge exchange for educational purposes. However, little is known about in which way students use social networking sites for informal learning and about characteristics of these students. In this paper, three studies examined the study-related knowledge exchange via StudiVZ, the German equivalent of Facebook. Results indicated that about one fifth of participants exchange study-related knowledge through StudiVZ and that these students are especially freshers seeking contact with other students and orientation. Consistent with previous research, it is shown that students use social networking sites mainly for social interaction and integration. However, results also imply that communication about social issues on social networking sites goes hand in hand with study-related knowledge exchange. 相似文献
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Hochberg Katrin Becker Sebastian Louis Malte Klein Pascal Kuhn Jochen 《Journal of Science Education and Technology》2020,29(2):303-317
Journal of Science Education and Technology - Mobile devices (smartphones or tablets) as experimental tools (METs) offer inspiring possibilities for science education, but until now, there has been... 相似文献
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In the context of learning implementation of new ideas e.g. knowledge management in organizations often is neglected. Concerning
knowledge management measures we demonstrate its implementation in organizations. A theoretical framework was developed showing
the necessary basic conditions for implementing knowledge management. Subsequently we integrate the framework into a process
model illustrated by a case study. 相似文献
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A. Katrin Arens Friederike Helm Fabian Wolff Jens Möller 《Journal of Experimental Education》2020,88(2):245-264
AbstractThis study extended the internal/external reference model to multiple languages including students’ language of instruction, first foreign language, and second foreign language. We examined whether social and dimensional comparisons play similar roles in the formation of students’ self-concept related to different languages and whether dimensional comparisons result in contrast or assimilation effects. All students had German as the language of instruction and English as the first foreign language. Students were divided into a subsample (N?=?487) learning French as a second foreign language and a subsample (N?=?481) learning Latin. Invariance tests demonstrated that the achievement–self-concept relations were similar across the subsamples, but interesting group differences became apparent when analyzing the French and Latin subsamples separately. 相似文献