School Schedules Affect Sleep Timing in Children and Contribute to Partial Sleep Deprivation     

Tâmile Stella Anacleto  Taísa Adamowicz  Laura Simões da Costa Pinto  Fernando Mazzilli Louzada 《Mind, Brain, and Education》2014,8(4):169-174

Although the environmental light/dark cycle is the main zeitgeber for the human species, the social cues seem to be important in the synchronization of circadian rhythms. In Brazil, the existence of two school schedules—one with only morning classes (MG) and other with only afternoon classes (AG)—allows the investigation of the effect of school activities on light exposure and sleep/wake patterns in children. Forty‐seven children wore wrist actimeters for a week for registration of light and sleep data. MG children presented shorter sleep duration on school days than the children from the AG. The results showed that during school days MG children were exposed to bright light earlier in the morning when compared to AG children. Nevertheless, there were no differences in light exposure after sunset. The results reflect the role of school schedules and artificial light in shaping light exposure, and its association with sleep timing in children.  相似文献   

Where Pop Meets Purl: Knitting,the Curation of Craft,and the Folk/Mass Culture Divide     

Julie Wolfram Cox  Stella Minahan 《Curator: The Museum Journal》2015,58(3):235-249

Since the 1970s, the de‐differentiation of high and low culture has legitimized the curation of craft and popular culture. The curation of some crafts, such as quilting, has assisted in reducing art‐craft distinctions, and the exhibition of fashion and popular music has highlighted links between folk culture (e.g., stories, songs, and crafts) and mass culture. With reference to the craft of knitting, we draw on the concept of the contact zone) to show how the current breaching of museum boundaries by yarn bombers can draw further attention to inclusions and exclusions in museum curation. Just as traditional age and gender distinctions are both problematized and perpetuated in public images and press reports on knitting, we argue that discussion of new forms and new contributors to curation processes may be tempered by broader analysis of the representation of craft within popular culture.  相似文献   

Balancing the Books: Modes of Assessment in A Level English Literature     

Stella Canwell  Jane Ogborn 《English in Education》1993,27(2):27-31

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Equal Opportunities: rhetoric or action     

Sue Lees  Maria Scott 《Gender and education》1990,2(3):333-343

During the last 10 years many higher educational institutions following the ILEA initiatives and equal opportunity (EO) legislation of the mid 1970's, announced they were equal opportunity institutions. This paper questions whether such pronouncements and declared policies have had any more than a marginal effect on the power structures and day to day running of institutions. It proposes that a positive action programme should be adopted to increase the proportion of women lecturers in higher education. More idealistically still, it discusses a transformational model of EO which would challenge the public private divide and democratise institutions. It draws on the experience of equal opportunities initiatives in a number of higher educational institutions and emphasises the importance of understanding resistance to change.  相似文献   

International publishing: the FID experience     

Stella Keenan 《Learned Publishing》1990,3(1):11-18

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Bridging culture with cognition: a commentary on “culturing conceptions: from first principles”     

Stella Vosniadou 《Cultural Studies of Science Education》2008,3(2):277-282

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Systematic Evaluation of Professional Performance: Legally Supported Procedure and Process     

Stella Beatriz Kerl  John L. Garcia  C. Sue McCullough  Melissa Elaine Maxwell 《Counselor Education & Supervision》2002,41(4):321-332

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Towards a Better Understanding of the Dynamic Role of the Distance Language Learner: Learner perceptions of personality,motivation, roles,and approaches     

Stella Hurd 《Distance Education》2006,27(3):303-329

This study investigated the experience of learners enrolled on an Open University (UK) French course, and included personality factors, motivation, and tutor and student roles. The data gathered via multiple elicitation methods gave useful insights into issues of special relevance to distance language education, in particular the lack of fit between an inherently social discipline such as language learning and the distance context, whose main characterizing feature is remoteness from others. Motivation was seen to play a crucial role in success, along with tutor feedback, and personal responsibility for learning. Increased confidence and self‐regulation were beneficial outcomes of the process of learning at a distance, and numerous suggestions for learning approaches based on personal experience were offered for language learners new to distance learning. The study concluded that the task for distance practitioners is to build on the insights shown by learners themselves, in order to target support where it is most needed.  相似文献   

Evaluating the effects of analogy enriched text on the learning of science: The importance of learning indexes     

Stella Vosniadou  Irini Skopeliti 《科学教学研究杂志》2019,56(6):732-764

Research has shown that differences in the prior knowledge of the participants and in the learning indexes adopted can explain why some studies show positive learning effects of analogy enriched text while others do not. In the present studies, these two factors were combined into one through the construction of a learning index that measured incremental positive changes in the participants' prior knowledge after reading an analogy enriched or no analogy text. A second learning index was also used to evaluate whether the participants created well-formed conceptual models after reading the science text. These learning indexes were used in two studies in which the effects of analogy enriched versus no analogy text were compared on the learning of the scientific explanations of the day/night cycle and of the seasons. The participants were 3rd and 5th graders in the first study and 6th graders and college students in the other. Although only few of the participants learned the correct scientific explanation, those who read the analogy enriched text produced more incremental positive changes in their pretest explanations at posttest and delayed test and created more well-formed conceptual models close to the scientific one than those who read the no analogy text. They also recalled more information and created fewer invalid inferences in their recalls. The results indicate that analogies can be used without reservation to facilitate the learning of science and have broader implications about how to evaluate the learning of science in general.  相似文献   

Variability and typical error in the kinematics and kinetics of the maximal instep kick in soccer     

Adrian Lees  Nader Rahnama 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):283-292

The purpose of this paper was to establish the variability and typical error of kinematic and kinetic variables representing the maximal instep kick in soccer for both the kicking and support legs. Ten skilled (good amateur or semi-professional) soccer players performed 20 maximal instep kicks of a stationary ball into a goal mouth. Motion of the kicking and support legs was recorded by an optoelectronic motion analysis system, and a six degrees of freedom model was used to compute kinematic and kinetic variables. Participants repeated the kicks on a second day at least 1 week later. The mean within-subject coefficient of variation across the kinematic and kinetic variables, trials, and days was 16% and did not change substantially as trial number increased or between day of test. Increasing trial number reduced the typical error (as determined by the standard error of the mean) such that for 20 trials 75% of the variables were below an arbitrary 5% threshold. It was concluded that for kicking investigations, 10–15 trials could be used and typical errors of 5% should be expected.  相似文献