Effects of fit between teachers’ instructional beliefs and didactical principles of reading programs     

Lars Behrmann  Elmar Souvignier 《European Journal of Psychology of Education - EJPE》2015,30(3):295-312

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The effect of textile air permeability on the drag of high-speed winter sports apparel     

Lars Morten Bardal  Robert Reid 《Sports Engineering》2014,17(2):83-88

In a number of sport disciplines characterized by high velocities, aerodynamic performance of sports apparel is a concern. The goal is often to reduce the aerodynamic drag force and thereby increase speed. In the design of optimized competition apparel the fabric properties will be very important. One fabric property which has traditionally been considered an influencing parameter on aerodynamic performance is the air permeability. In this paper the effect of air-permeability, treated as an independent variable, upon aerodynamic drag on a bluff body is investigated. Similar multilayer textiles with internal membranes regulating air permeability were tested on cylindrical models in wind tunnel experiments in order to identify a possible relation between air-permeability and drag force. A weak dependence of flow transition on air-permeability could be found, but this could be considered to have a limited effect on the aerodynamic performance of sports garments.  相似文献   

A journey of negotiation and belonging: understanding students’ transitions to science and engineering in higher education     

Henriette Tolstrup Holmegaard  Lene Møller Madsen  Lars Ulriksen 《Cultural Studies of Science Education》2014,9(3):755-786

The paper presents results from a longitudinal study of students’ decisions to enrol on a higher education science programme and their experiences of it. The aim is to give insights into students’ transition process and negotiation of identity. This is done by following a cohort of 38 students in a series of qualitative interviews during a 3-year period starting as they were about to finish upper secondary school. We find that the students’ choice of study is an ongoing process of meaning-making, which continues when the students enter higher education and continuously work on their identities to gain a sense of belonging to their science or engineering programme. The use of a narrative methodology provides understanding of choice of study as involving changes in future perspectives and in the interpretation of past experiences. Further, we gain access into how this meaning-making process over time reflects the students’ negotiations in terms of belonging to higher education and their coping strategies when their expectations of their new programme interact with their first-year experiences.  相似文献   

Dynamic in situ chromosome immobilisation and DNA extraction using localized poly(N-isopropylacrylamide) phase transition     

Eriksen J  Thilsted AH  Marie R  Lüscher CJ  Nielsen LB  Svendsen WE  Szabo P  Kristensen A 《Biomicrofluidics》2011,5(3):31101-311014

A method of in situ chromosome immobilisation and DNA extraction in a microfluidic polymer chip was presented. Light-induced local heating was used to induce poly(N-isopropylacrylamide) phase transition in order to create a hydrogel and embed a single chromosome such that it was immobilised. This was achieved with the use of a near-infrared laser focused on an absorption layer integrated in the polymer chip in close proximity to the microchannel. It was possible to proceed to DNA extraction while holding on the chromosome at an arbitrary location by introducing protease K into the microchannel.  相似文献   

Crowdfunding as Donations to Entrepreneurial Firms     

Kevin J. Boudreau  Lars Bo Jeppesen  Toke Reichstein  Francesco Rullani 《Research Policy》2021,50(7):104264

The bulk of today's (“preorder-,” “reward-,” “gift-,” and “donation-based”) crowdfunding raises funds for small, private entrepreneurial ventures without granting funders private claims to the projects’ income or the ability to guarantee the realization and delivery of project outcomes. We theorize and show empirically – via a mixed-method approach applied to a representative and remarkably informative case – that the payoff structure for crowdfunders, akin to a public good contribution problem, leads to the tangible value of main project outputs exerting little influence on contributions to crowdfunding. This then raises the question of which funder motivations fund seekers may have to address to crowdfund their projects. We demonstrate the especially large role of non-pecuniary motivations and pinpoint three particular motivations that profit-seeking entrepreneurs may stimulate to be financed through crowdfunding. The findings hold important implications for entrepreneurs’ crowdfunding strategies, platform design, and our understanding of how this funding institution works in general. The study also adds to emerging research on the implications of the public good nature of crowdfunding.  相似文献   

A New Form of Education and Examination in the Subjects of Engineering Mechanics at the University Of Luleå     

Jan Dahl  Lars Karlsson 《European Journal of Engineering Education》1978,3(3-4):277-283

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THE INTERNATIONAL COUNCIL OF SCIENTIFIC UNIONS (ICSU)∗:     

Lars ERNSTER 《Higher Education in Europe》1984,9(4):41-49

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Swedish Schools The National Action Programme for ICT in     

Lars Kajlert 《Educational Media International》2013,50(2-3):111-118

The National Action Programme, for information and communication technologies in the classroom is a unique effort by the Government to help safeguard equivalent standards and quality between schools. The national curricula adopted in 1992 prescribes a change of focus from teaching to learning. In this change ICT can be a powerful tool for learning and as such promote the transition. Evaluations of ICT projects in schools provide strong evidence that only when the organisation of work has been changed can the introduction of ICT fully support the children's learning. Le programme d’action national pour les TIC dans les écoles suédoises. Le programme national d'action pour les TIC dans les classes constitue de la part du Gouvernement une tentative unique pour maintenir des standards et une qualité équivalente entre les écoles. Le curriculum national adopté en 1992 prescrit un changement d'intérêt – de point de vue – de l'enseignement vers l'apprentissage. Les TIC peuvent devenir un outil particulièrement efficace pour soutenir l'apprentissage et peuvent donc jouer un rÔle important dans cette évolution. Les évaluations des projets d'école intégrant les TIC mettent cependant en évidence le fait que l'introduction des TIC ne soutient réellement l'apprentissage que si l'organisation du travail a elle aussi été changée. Das nationale Aktionsprogramm für ICT (Information and Communcation Technologies) an

schwedischen Schulen. as nationale Aktionsprogramm für Informations- und Kommunikationstechnologien in der Schule ist eine einzigartige Anstrengung der schwedischen Regierung, gleichwertigen Standard und Qualität zwischen den Schulen sicherzustellen. Der 1992 übernommene nationale Lehrplan schreibt einen Positionswechsel vom lehren zum lernen vor. In diesem Uebergang kann ICT ein wertvolles Instrument für die neue Entwicklung in der Bildung sein. Analysen von ICT Projekten an Schulen liefern den sicheren Beweis, Organisation des Unterrichts entsprechend modifiziert wurde. dass ICT die Ausbildung der Schüler im vollen Umfang unterstützen kann, sobald die  相似文献   

Parents’ Expectations About Participating in Antenatal Parenthood Education Classes     

Ingegerd Ahldén  Siw Ahlehagen  Lars Owe Dahlgren  Ann Josefsson 《The Journal of perinatal education》2012,21(1):11-17

Our objective was to assess parents’ expectations about participating in antenatal parenthood education classes and to determine whether their expectations might be related to gender, age, and educational level. Data from 1,117 women and 1,019 partners residing in three cities in Sweden were collected with a questionnaire in a cross-sectional study. Participants believed that antenatal education classes would help them to feel more secure as parents and to be better oriented toward childbirth. Men had more positive expectations about the childbirth than the women. The participants mostly wanted help in preparing for parenthood and in learning infant care skills, followed by help in preparing for childbirth. The participants’ expectations were affected by gender, age, and educational level. The expectant parents appeared to want more focus on preparation for parenthood than on childbirth.  相似文献   

Validating and Optimizing the Effects of Model Progression in Simulation-Based Inquiry Learning   总被引：1，自引：1，他引：0  

Yvonne G. Mulder  Ard W. Lazonder  Ton de Jong  Anjo Anjewierden  Lars Bollen 《Journal of Science Education and Technology》2012,21(6):722-729

Model progression denotes the organization of the inquiry learning process in successive phases of increasing complexity. This study investigated the effectiveness of model progression in general, and explored the added value of either broadening or narrowing students?? possibilities to change model progression phases. Results showed that high-school students in the ??standard?? model progression condition (n?=?19), who could enter subsequent phases at will, outperformed students from a control condition (n?=?30) without model progression. The unrestricted condition (n?=?22) had the additional option of returning to previous phases, whereas the restricted condition (n?=?20) disallowed such downward progressions as well as upward progressions in case insufficient knowledge was acquired. Both variants were found to be more effective in terms of performance than the ??standard?? form of model progression. However, as performance in all three model progression conditions was still rather weak, additional support is needed for students to reach full understanding of the learning content.  相似文献