Gold coated optical fibers as three-dimensional electrodes for microfluidic enzymatic biofuel cells: Toward geometrically enhanced performance     

Denis Desma?le  Louis Renaud  Sophie Tingry 《Biomicrofluidics》2015,9(4)

For the first time, we report on the preliminary evaluation of gold coated optical fibers (GCOFs) as three-dimensional (3D) electrodes for a membraneless glucose/O₂ enzymatic biofuel cell. Two off-the-shelf 125 μm diameter GCOFs were integrated into a 3D microfluidic chip fabricated via rapid prototyping. Using soluble enzymes and a 10 mM glucose solution flowing at an average velocity of 16 mm s⁻¹ along 3 mm long GCOFs, the maximum power density reached 30.0 ± 0.1 μW cm⁻² at a current density of 160.6 ± 0.3 μA cm⁻². Bundles composed of multiple GCOFs could further enhance these first results while serving as substrates for enzyme immobilization.  相似文献   

Orienting Toward Face‐Like Stimuli in Early Childhood          下载免费PDF全文

Punit Shah  Francesca Happé  Sophie Sowden  Richard Cook  Geoffrey Bird 《Child development》2015,86(6):1693-1700

Newborn infants orient preferentially toward face‐like or “protoface” stimuli and recent studies suggest similar reflexive orienting responses in adults. Little is known, however, about the operation of this mechanism in childhood. An attentional‐cueing procedure was therefore developed to investigate protoface orienting in early childhood. Consistent with the extant literature, 5‐ to 6‐year‐old children (n = 25) exhibited orienting toward face‐like stimuli; they responded faster when target location was cued by the appearance of a protoface stimulus than when location was cued by matched control patterns. The potential of this procedure to investigate the development of typical and atypical social perception is discussed.  相似文献   

Phonological skill,lexical decision and letter report performance in good and poor adult spellers     

Jackie Masterson  Veronica Laxon  Sophie Lovejoy  Victoria Morris 《Journal of Research in Reading》2007,30(4):429-442

Two groups of undergraduate students, matched for reading skill but differing in spelling ability, participated in three experiments with the aim of exploring the causes of differences in spelling skill in this population. In the first experiment participants were presented with a range of tasks to investigate the possibility that the poor spellers had poorer phonological abilities than the good spellers. No significant differences were observed. In Experiment 2, a lexical decision task was used. The words in the task differed in orthographic neighbourhood size (N) and frequency. Analysis of the latencies revealed effects of frequency and N, but the effect of spelling group was not significant and neither was the interaction with N. Analysis of the errors revealed that the poor spellers made significantly more errors than the good spellers. In Experiment 3 participants were asked to identify the letters in briefly presented words and non‐words. There was a significant effect of stimulus type in favour of words. Poor spellers made more errors in the task than the good spellers, although the difference was restricted to non‐words. Finally, an analysis of the errors made in spelling to dictation by the two groups was carried out. This revealed that the poor spellers were more likely than the good spellers to make errors that were not phonologically plausible and that differed markedly from the target. Overall, the results are interpreted in terms of a partial orthographic representations explanation of poor spelling in good readers.  相似文献   

A STUDY OF REFLECTIVE THINKING: PATTERNS IN INTERPRETIVE DISCUSSION     

Sophie Haroutunian-Gordon 《Educational theory》1998,48(1):33-58

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Improving high school students' understanding of potential difference in simple electric circuits     

Laurent Liégeois  G′erard Chasseigne  Sophie Papin  Etienne Mullet 《International Journal of Science Education》2013,35(9):1129-1145

This paper reports two studies into the understanding of the concept of potential difference in the current-potential difference-resistance context among 8th-12th graders (Study 1), and the efficiency of a learning device derived from Social Judgment Theory (Study 2). These two studies showed that: (a) when asked to infer potential difference from resistance and current information, most participants only relied on current and ignored or greatly underestimated the importance of resistance information; (b) exposure to an electricity course did not much alter the way participants infer potential difference from resistance and current information; (c) a simple learning device considerably improved the way participants infer potential difference from resistance and current information; and (d) this observed improvement promised to be durable, at least in the short term.  相似文献   

Two Decades of Cumulative Microtraining in The Netherlands: An Overview     

H.T. van der Molen  G.N. Smit  M.A. Hommes  G. Lang 《Educational Research and Evaluation》2013,19(4):347-378

ABSTRACT

In addition to recent meta‐analyses, the goal of this article is to give a narrative review and a meta‐analysis of 20 studies into the effectiveness of communication skills training programs, using a cumulative microtraining format (CMT). The aims of all training programs are directed at increasing knowledge of social skills, extension of the behavior repertoire and change of experience of communication situations (reduction of anxiousness and improvement of self‐confidence). Four groups of trainees are included in the study: (1) students, (2) paraprofessionals, (3) clients with problems in living, (4) communication skill trainers. The results of our meta‐analysis are comparable with the results of other meta‐analyses. The strongest effect is found for knowledge, but the effects for behavior and experience are also substantial. Explanations for the strong effects are: (1) the careful analysis of communication situations before the development of the training programs; (2) the cumulative character of the programs.  相似文献   

The Role of External Professionals in Education about Sexual Orientation−towards good practice     

Nicola Douglas  Sophie Kemp  Peter Aggleton  Ian Warwick 《Sex education》2013,13(2):149-162

Throughout England, young people in schools are entitled to a comprehensive programme of sex education as part of Personal, Social and Health Education (PSHE). Current debate about the content of such a programme is informed by new government guidance on sex and relationship education as well as pre-existing concerns about homophobic bullying, sexual health and mental health. In an English local authority, an externally funded Young Gay and Bisexual Men's Development Worker provided educational activities to address sexual orientation and identity issues to four schools. An evaluation sought to identify whether successes had been achieved and why. A further aim was to identify useful learning about the role of external professionals in carrying out effective education about sexual orientation with young people in schools. The evaluation was developed within the context of a number of 'real-world' limitations. Nevertheless, a significant number of project successes (and areas for development) were documented. Successes included raising awareness of key issues among pupils and supporting teachers engaged in PSHE. Key factors contributing to success included: adequate preparation of teachers and pupils in schools; an appropriately skilled and experienced project worker; and a considered approach to building partnerships with schools and working with young people.  相似文献   

Conditions of Success of a School's Self-Evaluation: Some Lessons of an European Experience     

Denis Meuret  Sophie Morlaix 《School Effectiveness & School Improvement》2013,24(1):53-71

This study uses data from an European Project on school self-evaluation. A hundred and one schools experimented with self-evaluation and reported on what they did and what were the outcomes of the process. It is therefore possible to look at which characteristics of the process are associated with a positive appreciation of its effects. This analysis is conducted by confronting 2 general models of self-evaluation, named here the “technical” and the “participating” models. The 2 models are presented, then their ability to explain the success of a process of self-evaluation is compared. The explaining power of both models appears to show similarities, a result which makes it relevant to look at their optimal combination.  相似文献   

The motivations, values and future plans of Australian academics   总被引：1，自引：0，他引：1  

Emmaline Bexley  Sophie Arkoudis  Richard James 《Higher Education》2013,65(3):385-400

The Australian academic profession is more differentiated than is acknowledged in national and institutional policies and academic roles are more diverse than many academics themselves may recognise. However, the evolution of the nature and purposes of the profession and its implicit diversification have been incremental and largely unplanned. A consequence of this piecemeal approach is the attitudes and pressures on academic staff uncovered by this study, including a widespread intent to leave the Australian higher education sector for other work, or work in overseas universities. The study is based on a large-scale survey of over 5,500 academics across 19 Australian universities, and explores the attitudes, motivators and career plans of the present academic workforce in Australia.  相似文献   

A conceptualisation of whole‐class scaffolding     

Jantien Smit  Henriëtte A. A. van Eerde  Arthur Bakker 《British Educational Research Journal》2013,39(5):817-834

The concept of scaffolding refers to temporary and adaptive support, originally in dyadic adult–child interaction. It has become widely used, also in whole‐class settings, but often in loose ways. The aim of this paper is to theoretically and empirically ground a conceptualisation of whole‐class scaffolding so that it remains close to the origin of the scaffolding concept, but also provides scope for features not salient in one‐to‐one interaction. Drawing an analogy with Vygotsky's concept of Zone of Proximal Development we argue why the extension to whole‐class settings is justified. We further distinguish three key characteristics for whole‐class scaffolding—diagnosis, responsiveness and handover to independence—and illustrate these with examples from a teaching experiment focusing on whole‐class scaffolding language in a multilingual mathematics classroom (age 10–12). The empirical data led to a metaphorical distinction between online and offline enactment of key characteristics, during respectively outside whole‐class interaction. Diagnoses can namely also be made outside lessons, for instance by reading pupils' work; responsiveness can also be realised in adapting instructional activities; and handover to independence can also be fostered in the design of lessons. In addition to this layered nature (online vs. offline), whole‐class scaffolding is often distributed over time. Finally, whole‐class scaffolding is cumulative with pupils' independence emerging as the cumulative effect of many diagnostic and responsive actions over time. We suggest these three features are at the core of whole‐class scaffolding that is deliberately employed to foster long‐term learning processes.  相似文献