Rapid mask prototyping for microfluidics     

B. G. C. Maisonneuve  T. Honegger  J. Cordeiro  O. Lecarme  T. Thiry  D. Fuard  K. Berton  E. Picard  M. Zelsmann  D. Peyrade 《Biomicrofluidics》2016,10(2)

With the rise of microfluidics for the past decade, there has come an ever more pressing need for a low-cost and rapid prototyping technology, especially for research and education purposes. In this article, we report a rapid prototyping process of chromed masks for various microfluidic applications. The process takes place out of a clean room, uses a commercially available video-projector, and can be completed in less than half an hour. We quantify the ranges of fields of view and of resolutions accessible through this video-projection system and report the fabrication of critical microfluidic components (junctions, straight channels, and curved channels). To exemplify the process, three common devices are produced using this method: a droplet generation device, a gradient generation device, and a neuro-engineering oriented device. The neuro-engineering oriented device is a compartmentalized microfluidic chip, and therefore, required the production and the precise alignment of two different masks.  相似文献   

Introduction to the Special Issue on Developing Executive Education Programs with Online Distance Education          下载免费PDF全文

Marc J. Schniederjans  Dennis Lanham  Stephen B. LeGrand 《Decision Sciences Journal of Innovative Education》2017,15(1):4-7

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Innovation,experience and artists’ age-valuation profiles: evidence from eighteenth-century rococo and neoclassical painters     

John W. Galbraith  Douglas J. Hodgson 《Journal of Cultural Economics》2015,39(3):259-275

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The Coming of Age of the Academic Career: Differentiation and Professionalization of German Academic Positions from the 19th Century to the Present     

Cathelijn J. F. Waaijer 《Minerva》2015,53(1):43-67

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Tim Henman,British tennis and the social construction of English identity in the 1990s and 2000s     

Robert J. Lake 《Sport in Society》2017,20(11):1745-1764

Tim Henman was inarguably the best English player, and the most popular and socially significant British player, since Fred Perry. Throughout his career, media constructions of him fluctuated from being heralded as a potential Wimbledon champion, to a weak, underachieving perennial loser. Throughout his career, and despite the constant transition of dominant narratives, Henman’s quintessential ‘Englishness’ remained a key component, expressed through his image, appearance, ostensible personality/character and playing style. His ‘Englishness’ was especially apparent against the backdrop of the Wimbledon Championships, which used Henman’s success in its marketing of ‘tennis in an English garden’. This paper assesses the shifting meanings behind, and values of, Henman’s sustained image, and examines how changes in the narratives of Henman as a player reflected broader shifts in English identity. It is argued that Henman played a significant role in how Englishness was constructed, both in Britain and abroad, during the 1990s and 2000s.  相似文献   

Warum scheiterte 1920 August Biers Antrag auf einen „Doktor der Leibesübungen“?     

Univ.-Prof. Dr. Jürgen Court 《Sportwissenschaft》2011,41(2):91-99

This article deals with the first years of foundation of the private Deutsche Hochschule für Leibesübungen (DHfL). It focuses on the question of why August Bier’s application for a Doktor der Leibesübungen in 1920 was refused. In the same year the DHfL also made an application for the education in state-run schools which was already task of the state-run Preußische Landesturnanstalt at Spandau. As the DHfL combined this application with its insistence on its autonomous status an application for a Doktor der Leibesübungen had implied financial, conceptual and institutional obligations for Prussia and at the same time a renuncitation of its sovereign rights. This thesis was proved by a comparison between the doctorate in physical education and the doctorate for businessmen at Cologne University.  相似文献   

Educational concerns of Arabic speaking migrants from Sudan and Iraq to Melbourne: Expectations on migrant parents in Australia     

W.J. Sainsbury  A.M.N. Renzaho 《International Journal of Educational Research》2011,50(5-6):291-300

Families immigrating to Australia face many challenges integrating into the educational system, including language barriers and interrupted schooling. We have qualitatively evaluated the educational concerns of Arabic migrants from Sudan and Iraq to Melbourne, Victoria, Australia, a city that receives a high percentage of Australia's immigrants. Using an interactive paradigm incorporating focus group discussions for thematic analysis, we concluded that the parents’ frame of reference for education was a more didactic style of learning. Parents viewed education as an essential part of the way forward for their children in Australia. However, it was stressful for them to try to cope with a new host nation's expectation of their involvement in their children's education while at the same time dealing with a language barrier. Professionals should look to empower parents with structural information about the key elements of the educational curriculum with minimal reliance on written technical language and match their expectations of parental involvement to the situation of the parents.  相似文献   

Science Instruction for Students with Learning Disabilities: A Meta‐Analysis     

William J. Therrien  Jonte C. Taylor  John L. Hosp  Erica R. Kaldenberg  Jay Gorsh 《Learning disabilities research & practice》2011,26(4):188-203

Although science has received much attention as a political and educational initiative, students with learning disabilities (LD) perform significantly lower than their nondisabled peers. This meta‐analysis evaluates the effectiveness of instructional strategies in science for students with LD. Twelve studies were examined, summarized, and grouped according to the type of strategy implemented. Effect sizes (ES) were calculated for each study. Across all studies, a mean ES of .78 was obtained, indicating a moderate positive effect on students with LD science achievement. Findings also align with past reviews of inquiry‐based instruction for students with special needs, indicating that students with LD need structure within an inquiry science approach in order to be successful. Additionally, results suggest that mnemonic instruction is highly effective at increasing learning disabled students' acquisition and retention of science facts.  相似文献   

Neuroanatomy Learning: Augmented Reality vs. Cross-Sections     

Dylan J.H.A. Henssen  Loes van den Heuvel  Guido De Jong  Marc A.T.M. Vorstenbosch  Anne-Marie van Cappellen van Walsum  Marianne M. Van den Hurk  Jan G.M. Kooloos  Ronald H.M.A. Bartels 《Anatomical sciences education》2020,13(3):353-365

Neuroanatomy education is a challenging field which could benefit from modern innovations, such as augmented reality (AR) applications. This study investigates the differences on test scores, cognitive load, and motivation after neuroanatomy learning using AR applications or using cross-sections of the brain. Prior to two practical assignments, a pretest (extended matching questions, double-choice questions and a test on cross-sectional anatomy) and a mental rotation test (MRT) were completed. Sex and MRT scores were used to stratify students over the two groups. The two practical assignments were designed to study (1) general brain anatomy and (2) subcortical structures. Subsequently, participants completed a posttest similar to the pretest and a motivational questionnaire. Finally, a focus group interview was conducted to appraise participants’ perceptions. Medical and biomedical students (n = 31); 19 males (61.3%) and 12 females (38.7%), mean age 19.2 ± 1.7 years participated in this experiment. Students who worked with cross-sections (n = 16) showed significantly more improvement on test scores than students who worked with GreyMapp-AR (P = 0.035) (n = 15). Further analysis showed that this difference was primarily caused by significant improvement on the cross-sectional questions. Students in the cross-section group, moreover, experienced a significantly higher germane (P = 0.009) and extraneous cognitive load (P = 0.016) than students in the GreyMapp-AR group. No significant differences were found in motivational scores. To conclude, this study suggests that AR applications can play a role in future anatomy education as an add-on educational tool, especially in learning three-dimensional relations of anatomical structures.  相似文献   

Innovative approaches towards an economic fusion reactor     

Houyang Guo  Francis Y C Thio  Michl W Binderbauer  Richard J Buttery  Thomas R Jarboe  Rajesh Maingi  John S Sarff  Peter C Stangeby  Derek A Sutherland  Mickey R Wade  Michael C Zarnstorff 《国家科学评论(英文版)》2020,7(2):245

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