Sleep restriction and degraded reaction-time performance in Figaro solo sailing races     

RÉmy Hurdiel  HANS P.A. Van Dongen  Christophe Aron  Peter McCauley  Laure Jacolot  Denis Theunynck 《Journal of sports sciences》2013,31(2):172-174

Abstract

In solo offshore sailing races like those of the Solitaire du Figaro, sleep must be obtained in multiple short bouts to maintain competitive performance and safety. Little is known about the amount of sleep restriction experienced at sea and the effects that fatigue from sleep loss have on sailors’ performance. Therefore, we assessed sleep in sailors of yachts in the Figaro 2 Beneteau class during races and compared response times on a serial simple reaction-time test before and after races. Twelve men (professional sailors) recorded their sleep and measured their response times during one of the three single-handed races of 150, 300 and 350 nautical miles (nominally 24–50 h in duration). Total estimated sleep duration at sea indicated considerable sleep insufficiency. Response times were slower after races than before. The results suggest that professional sailors incur severe sleep loss and demonstrate marked performance impairment when competing in one- to two-day solo sailing races. Competitive performance could be improved by actively managing sleep during solo offshore sailing races.  相似文献   

The semantic effects of consulting a textual database on rewriting     

Jacques Crinon  Denis Legros   《Learning and Instruction》2002,12(6)

Children 8-10-years old were asked to write a story and then to improve it using resource texts. A first group accessed the resource texts through a computer database, a second group read the texts on paper and no texts were given to a third group. Regardless of their reading abilities, the children using computers produced more propositions during rewriting and, in particular, more macrostructural propositions. Inventions inspired by the resource texts outnumbered borrowings, particularly in the computer-assisted group. Our interpretation stresses the effect of the database learning environment on the reprocessing of mental models involved in generating first drafts.  相似文献   

Computer Uses in School Administration: a pilot project     

Denis J Simair 《British journal of educational technology : journal of the Council for Educational Technology》1982,13(2):114-128

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Children's Norm Enforcement in Their Interactions With Peers     

Bahar Köymen  Elena Lieven  Denis A. Engemann  Hannes Rakoczy  Felix Warneken  Michael Tomasello 《Child development》2014,85(3):1108-1122

This study investigates how children negotiate social norms with peers. In Study 1, 48 pairs of 3‐ and 5‐year‐olds (N = 96) and in Study 2, 48 pairs of 5‐ and 7‐year‐olds (N = 96) were presented with sorting tasks with conflicting instructions (one child by color, the other by shape) or identical instructions. Three‐year‐olds differed from older children: They were less selective for the contexts in which they enforced norms, and they (as well as the older children to a lesser extent) used grammatical constructions objectifying the norms (“It works like this” rather than “You must do it like this”). These results suggested that children's understanding of social norms becomes more flexible during the preschool years.  相似文献   

Word reading and word spelling in French adult literacy students: the relationship with oral language skills     

Elsa Eme  Eric Lambert  Denis Alamargot 《Journal of Research in Reading》2014,37(3):268-296

We analysed word reading and spelling in French adults with low levels of literacy (A‐IL). As well as examining phonological and lexical processes, we explored the relationship between literacy and oral language skills. Fifty‐two adult literacy students were compared with reading level‐matched pupils in Years 1–3 of primary school on reading tasks (pseudoword reading, word reading, text comprehension), spelling tasks (pseudoword spelling, text dictation) and oral language tasks. A‐IL scored the same as children on word reading and spelling but less well on pseudoword reading and spelling. They also produced fewer phonologically acceptable errors in the dictation. Regarding oral language skills, as a group A‐IL encountered greater difficulty in phonology than in morphosyntax and semantics, and correlations revealed strong relationships between literacy levels and oral skills, particularly in the domain of phonology. Within their group, however, A‐IL displayed several distinct language profiles. These could reflect different risk factors leading to functional illiteracy and are discussed regarding the cognitive and environmental causes of impaired reading acquisition.  相似文献   

The Media Audience: A Brief Biography—Stages of Growth or Paradigm Change?     

Denis McQuail 《The Communication Review》2013,16(1-2):9-20

The concept of audience was widely adapted from its earlier origins in public spectacles and performance to apply to the new circumstances of mass media reception in the early 20th century, and especially to the public for film and broadcasting. It could even be applied more generally to include print media. The then novel usage of the term was a component in the larger paradigm of mass communications that in turn rested on certain preconceptions about its ‘mass’ character. These preconceptions have been challenged by subsequent research and theory. More recently, however, the ongoing transformation of the means of communication may have rendered the whole mass communication paradigm itself obsolescent, and with it the concept of a mass audience. In this article it is argued that paradigmatic change in ideas about the audience may be less due to a shift in technology than to the more fundamental theoretical changes of the intervening period.  相似文献   

Using web design with pre‐service teachers as a means of creating a collaborative learning environment     

Margaret Leahy  Denis Twomey 《Educational Media International》2013,50(2):143-151

This study involves a group of over 300 third‐year Bachelor of Education students attending St Patrick’s College of Education, Dublin, Ireland. Working in groups of not more than three, the students completed an assignment to create a WebQuest. On construction of the WebQuest the students were asked to reflect on the experience, considering issues such as collaboration, cooperation, planning, decision‐making, time management, project direction and design. They were also asked to reflect on the impact of the exercise on their own learning styles and its influence on their concepts of teaching and learning. Finally, they were asked if the exercise had affected their ideas of how to use the Internet in school and if they envisage using WebQuests as part of their teaching in the future. Their reflections were facilitated by a questionnaire. Results of the project have implications for future course design.

Die Erstellung eines Webdesigns durch Lehramtsstudenten als Mittel, eine kollaborative Lernumgebung zu erzeugen

Diese Studie umfasst eine Gruppe von mehr als 300 Lehrerstudenten des St. Patrick’s College of Education in Dublin, Irland. In Gruppen von nicht mehr als drei Personen füllten die Studenten einen Zusatz zur Erzeugung eines Webfragebogens aus. Im Verlauf der Arbeit an der Konstruktion des WebQuest wurden sie aufgefordert, über die Erfahrung mit Dingen wie Zusammenarbeit, Kooperation, Planung, Entscheidungsfindung, Zeitmanagement, Projektziel und Konzeption nachzudenken. Zusätzlich wurden sie angehalten, über den Einfluss dieser Übung auf ihren eigenen Lehrstil und auf ihre Konzepte von Lehren und Lernen zu reflektieren. Schließlich wurden sie befragt, ob diese Übung ihre Einschätzung, wie das Internet im Schulunterricht genutzt werden könne und ob sie sich vorstellen könnten, WebQuests im Rahmen ihres zukünftigen Unterrichts einzusetzen. Ihre Reflexionen wurden durch einen Fragebogen unterstützt. Die Ergebnisse des Projekts haben Auswirkungen auf zukünftige Lehrgangsentwürfe.

Comment utiliser la conception de sites Web avec des enseignants en formation initiale pour créer un environnement d’apprentissage collaboratif

Cette étude porte sur un groupe de plus de 300 étudiants de Licence en Education inscrits à l’Institut St Patrick de formation des Maîtres de Dublin. Travaillant en groupes de trois au maximum, ces étudiants ont mené à bien un projet de création d’un WebQuest.Au moment de la construction de ce WebQuest, on a demandé aux étudiants de réfléchir sur l’expérience en cours et sur les problèmes de collaboration, de coopération, de planification, de prise de décision,de gestion du temps,d’ orientation et de conception du projet. On leur a aussi demandé de réfléchir à l’impact de cet exercice sur leurs propres styles d’apprentissage et à son influence sur la façon dont ils envisageaient l’enseignement et l’apprentissage.On les a finalement interrogés pour savoir si cet exercice avait affecté leur façon de penser aux usages de l’Internet à l’école et si ils (elles) envisageaient d’utiliser WebQuest dans leur enseignement à l’avenir. Un questionnaire a facilité la réponse à ces questions. Les résultats de ce projet auront des conséquences pour la conception des cours à venir.  相似文献   

The Irish Christian Brothers and the National Board of Education: Challenging the Myths     

Denis McLaughlin 《History of education》2013,42(1):43-70

For close to 170 years the general consensus from historians has been that Edmund Rice, who founded the Irish Christian Brothers in 1802, was an unenthusiastic applicant to the National Board of Education in Ireland in 1832 and later withdrew his schools because he believed his education was incompatible with the philosophy underpinning the conduct of Board schools. Three myths were created and have circulated over many years to uphold and sustain a pretence that this was the situation which prevailed. These myths are that the Christian Brothers were reluctant participants with the Board; that the Board’s system of education was inimical to the Brothers; and that the Christian Brothers left the Board as a matter of principle. This paper contests these myths and argues that they made virtue of an internal rift that dramatically divided the Christian Brothers politically for over a century. This was a rift that sidelined Edmund Rice and those who supported him.  相似文献   

Adaptation of the Students' Motivation Towards Science Learning (SMTSL) questionnaire in the Greek language     

Irini Dermitzaki  Panayiota Stavroussi  Denis Vavougios  Konstantinos T. Kotsis 《European Journal of Psychology of Education - EJPE》2013,28(3):747-766

The present study aimed at adapting in the Greek language the Students' Motivation Towards Science Learning (SMTSL) questionnaire developed by Tuan, Chin, and Shieh (INT J SCI EDUC 27(6): 639-654, 2005a) into a different cultural context, a different age group, that is, in university students and with a focus on physics learning. Three hundred and fifty Greek student teachers participated in the study. The original instrument consisted of 35 items allocated in six scales: self-efficacy, use of active learning strategies, science learning value, performance goals, achievement goals, and learning environment stimulation. The instrument's internal consistency was acceptable and comparable to previous studies' reports. Confirmatory factor analysis (CFA) was applied on the data in order to test an a priori hypothesis regarding the SMTSL's factorial structure based on previous studies' findings. The results of the study showed that the six-factor conceptual model of students' motivation proposed by the SMTSL applies in this different cultural setting and in this group of university students with reference to physics learning. Along with the six distinct motivational constructs confirmed, students' motivational beliefs were also explained by a general motivational construct assumed to be at their basis. Suggestions for further improvement of the Greek version of the SMTSL are also discussed.  相似文献   

Evolutionary Essentialism     

Walsh  Denis 《The British journal for the philosophy of science》2006,57(2):425-448

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