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找出推动文明演进的内在核心要素是大力推进新时期生态文明建设的关键。本文从技术经济范式变革的视角构建了一个“技术—组织—环境”的分析框架,探讨了黄河流域农业文明的演进过程与内在机理。研究表明：①农业技术经济范式的变革是农业文明演进的根本动力,它包括以人为主体的农业通用技术的革命,生产组织方式的变化以及农业地理环境的变迁;②黄河流域农业文明的演进呈现明显的阶段性,可划分为新石器时代木石锄耕农业文明、青铜时代金属器锄耕农业文明、铁器时代精耕细作农业文明、机器时代工业化农业文明和计算机时代信息生态农业文明五个阶段;③农业文明的演进呈螺旋式上升,其形态的演变是农业技术经济范式三组分及其带来的生产力和生产关系之间协同创新和协同演化的结果;④促进技术经济范式的绿色化转型是生态文明建设的关键内核。建设以绿色信息技术为核心的资源节约、环境友好的信息生态农业文明将是未来农业文明的发展方向。 相似文献
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刘明阳为近现代天津著名藏书家,藏书以明刻罕传史料书为收藏重点,是近现代夫妇藏书家的典范,目前所得知的刘氏藏书下限为民国二十五（1936）年。随着古籍普查的逐步深入,刘氏藏书越来越多地展现出来,将对津冀地区藏书史的研究添上浓重的一笔。 相似文献
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We have followed a group of students in the potential pipeline for science through their last years of upper secondary school and in the context of a university mentorship program. The student group is defined by their choice of Mathematics at A-level which is mandatory for admission to tertiary STEM education in Denmark. Rich data (repeated interviews, questionnaires (pre-and post-) and observations) from 14 target students have been collected. Using Late Modern identity theory as a lens, we have analysed students’ identity narratives in order to establish their trajectories in relation to university in general, and towards science studies and science careers in particular. We find that the diversity of students’ educational identity narratives can be characterized and their trajectories understood in terms of a Four Factor Framework comprising: general identity process orientations (reflecting, committing, exploring), personal values, subject self-concepts and subject interests. In various ways these constructs interact and set the range and direction of the students’ searches for future education and careers. Our longitudinal study suggests that they have enough permanence to enable us to hypothesize more or less secured paths of individual students to tertiary science (or other areas of academia). 相似文献
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Erling Roland 《Educational research; a review for teachers and all concerned with progress in education》2013,55(1):55-67
Bullies, victims and pupils neutral to bullyingwere compared on depressive symptoms and suicidal thoughts.The sample included 2,088 Norwegian boys and girls in grade 8. The results revealed that both bullies and victims had significantly higher mean scores than neutral pupils on both depressive symptoms and suicidal thoughts. Victims had a significantly higher mean score on depressive thoughts than the bullies. On suicidal thoughts, the mean score for bullies was above that of the victims, but this differencewas not significant. Girls had significantly higher mean scores than boys on both depressive symptoms and suicidal thoughts. This was the case for all pupils, and for victims, bullies and the neutral pupils. Questions of causality between depressive symptoms, suicidal thoughts and involvement in bullying are discussed and research on this issue is suggested. 相似文献
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Most research on bullying in schools has focussed on characteristics of bullies or victims, and their families. Relatively little has investigated the school's contribution to pupil bullying. Information was obtained from teachers in 22 Norwegian primary schools on bullying and 3 aspects of professional culture. The school highest in bullying had significantly worse scores on all professional culture variables than the school lowest on bullying. The results are discussed with reference to the possibility that improvement in professional culture may contribute to less bullying and overall improvement in behaviour. In turn, these may be prerequisites for improvement in academic standards. 相似文献
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Jeroen P.J. de Jong Shiko M. Ben-Menahem Nikolaus Franke Johann Füller Georg von Krogh 《Research Policy》2021,50(8):104270
Individual consumers in the household sector increasingly develop products, services and processes, in their discretionary time without payment. Household sector innovation is becoming a pervasive phenomenon, representing a significant share of the innovation activity in any economy. Such innovation emerges from personal needs or self-rewards, and is distinct from and complementary to producer innovations motivated by commercial gains. In this introductory paper to the special issue on household sector innovation, we take stock of emerging research on the topic. We categorize the research into four areas: scope, emergence, implications for business, and diffusion. We develop a conceptual basis for the phenomenon, introduce the articles in the special issue, and show how each article contributes new insights. We end by offering a research agenda for scholars interested in the salient phenomenon of household sector innovation. 相似文献
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The role of competitive funds as a source of funding for academic research has increased in many countries. For the individual researcher, the receipt of a grant can influence both scientific production and career paths. This paper focuses on the importance of the receipt of a research grant for researchers’ academic career paths utilizing a mixed methods approach that combines econometric analysis with in-depth qualitative interviews. The analysis has novel elements both in terms of its subject (impact of funding grants on individuals’ academic career paths) and approach. The results of this study indicate that while research grants have a positive impact on the research performed under the grant itself, there are very important secondary effects on research performance through positive effects on academic career advancement. The probability of obtaining a full professorship for grant recipients is almost double that for rejected applicants, 16 percent compared to 9 percent. The probability for career advancement in general is about 9 percentage points higher for grant recipients. Qualitative interviews support these quantitative results by providing insights into how grants impact research careers, through heightened status, recognition, networking and other factors. 相似文献
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Erling Ljoså 《European Journal of Engineering Education》1995,20(2):195-199
Four major issues concerning quality in European distance education are addressed. (1) The lack of flexibility in educational institutions is a threat to the quality of the present education system. (2) New technologies offer new potential, but also confront us with a need for quality assessment and assurance. (3) New markets in industry and in new regions of Europe highlight the need for quality standards and guidelines. (4) Finally, public assessment and control of quality are under continuous discussion. In general, quality assurance should be approached in various ways and with different measures at institutional, national and international levels. 相似文献
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