Just One More Episode: Predictors of Procrastination with Television and Implications for Sleep Quality     

Liese Exelmans  Adrian Meier  Leonard Reinecke  Jan Van Den Bulck 《Mass Communication and Society》2019,22(5):654-685

Sleep experts have raised concern over the effects of electronic media use on sleep. To date, few studies have looked beyond the effects of duration and frequency of media exposure or examined the underlying mechanisms of this association. As procrastinatory media use has been related to lower well-being, we used data from two survey studies (N₁ = 821, N₂ = 584) to investigate (a) predictors of procrastinatory TV viewing and (b) the link between procrastinatory TV viewing and sleep quality. Findings from both studies indicate that those with a stronger viewing habit, higher TV involvement, and an eveningness preference reported more procrastinatory TV viewing. Procrastinatory TV viewing was related to subjective sleep quality, sleep latency, sleep efficiency, and daytime dysfunction. This association was fully mediated by perceived stress. As sleep is key for the replenishment of self-control, procrastinators may be setting themselves up to fail at self-regulating, a situation exacerbated by the omnipresence of media in today’s society.  相似文献   

The relationship between strength asymmetries and jumping performance in professional volleyball players     

Pedro Schons  Rodrigo Gomes Da Rosa  Gabriela Fischer  Guilherme Pereira Berriel  Carolina Gassen Fritsch  Fábio Yuzo Nakamura 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(5):515-526

Knee peak torque (PT) is associated to jump performance in volleyball players. It is not clear whether muscle strength imbalances of the knee joint can influence jump performance. The purpose of study was to analyse the association between PT and knee muscular imbalances with jump performance in professional volleyball players. Eleven elite male volleyball players (90.3 ± 9.7 kg body mass and 1.94 ± 0.06 m height) were evaluated in an isokinetic dynamometer at speeds of 60, 180 and 300 deg/s. Muscle strength imbalances were obtained through calculation of contralateral deficit between limbs and the conventional ratio (hamstrings/quadriceps). Countermovement jump (CMJ) was performed on a force plate to calculate mechanical power and height. Association was found between knee extensor PT at 180 deg/s with CMJ power (r = 0.610, p = 0.046). Conventional ratio at 300 deg/s showed negative association with CMJ (r = ?0.656, p = 0.029). The optimal ratio between knee extensors PT in relation to the flexors PT is associated with the greater mechanical power in CMJ. Contralateral deficit does not seem to be associated with the CMJ performance. Considering the knee extensor PT is associated with CMJ power, our findings suggest that strength-based training in volleyball athletes should not omit the conventional muscle ratio.  相似文献   

Yeast-Leavened Laminated Salty Baked Goods: Flour and Dough Properties and Their Relationship with Product Technological Quality     

Ana E. de la Horra  María Eugenia Steffolani  Gabriela N. Barrera  Pablo D. Ribotta  Alberto E. León 《Food Technology and Biotechnology》2015,53(4):446-453

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A “gathering of enthusiastic expense account tourists”?     

Jr.-Prof. Dr. H.E. Meier 《Sportwissenschaft》2011,41(4):300-314

The paper addresses the question whether the cooperative relationship between organized sport and state actors has left an impact on the legislative organization of sport policy-making. The idea of whether the Sport Committee of the Bundestag can be categorized as a constituency committee staffed mainly with lobbyists from the sport associations and backbenchers is examined. Empirical results for the hypotheses are mixed. Committee assignments and career trajectories show some features supporting the idea that membership in the Sport Committee is mainly interesting for legislators with a strong sport background. However, committee members have strong party ties suggesting that the committee is also of relevance for the political parties and is under party control. The Sport Committee member’s ties with the sport bodies indicate patterns of co-optation between sport and legislature.  相似文献   

A Cross-Linguistic,Longitudinal Study of the Foundations of Decoding and Reading Comprehension Ability     

Markéta Caravolas  Arne Lervåg  Marína Mikulajová  Sylvia Defior  Gabriela Seidlová-Málková  Charles Hulme 《Scientific Studies of Reading》2013,17(5):386-402

ABSTRACT

The present study investigated the moderating role of orthographic consistency on the development of reading comprehension in four language groups (English, n = 179; Spanish, n = 188; Czech, n = 135; Slovak, n = 194) from kindergarten to Grade 2. In all languages, early variations in phoneme awareness/letter knowledge, rapid automatised naming, and emerging decoding skills, but not oral language, predicted variations in decoding skills at the end of Grade 1; these in turn predicted reading comprehension in Grade 2. For the three consistent orthographies (Spanish, Slovak, and Czech), kindergarten language skills were another significant predictor of Grade 2 reading comprehension. This effect was absent in the English sample, where variations in decoding skills were a more powerful predictor. These results provide the first longitudinal evidence for effects of orthographic consistency on the development of reading comprehension and provide support for the simple view of reading.  相似文献   

Finding facts and constructing memory: the creation and custody of human rights records in South America     

Gabriela Andaur Gómez 《档案与原稿》2013,41(3):158-170

Gabriela Andaur Gómez is currently a student in the Master of Archival Studies at the School of Library, Archival, and Information Studies at The University of British Columbia, in Vancouver, Canada. Her interest in Human Rights records arose from her experience as the Coordinator of the Archives of the Federación de Estudiantes de la Universidad de Chile (FECH), the repository responsible for safeguarding the records produced by the student Federation from the dictatorship period to the present, and for documenting the Chilean student movement. Ms Andaur Gomez holds a BA in History from the Universidad de Chile (2010) and is a scholarship holder of the Becas Chile program of the Government of Chile. She will soon start work as a Graduate Research Assistant for the Records in the Cloud project at UBC.

Human rights records have been characterised as those created during the reign of repressive governments or in a transitional context, produced by the state or non-governmental organisations and whose content is related to, or is evidence of, the occurrence of human rights violations. This paper examines three major types of human rights records produced in South America during the second half of the twentieth century, with the aim of identifying their characteristics, the functions that they have served and the challenges that have emerged in relation to their preservation and custody.  相似文献   

Future teachers’ conceptions concerning the learning capacity of pupils in multicultural schools in South Africa     

Corinne Meier  Eleanor Letnmer 《Prospects》2001,31(3):333-352

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Prediction and the Periodical Aspect as Generators of Knowledge in a Social Practice Framework     

Gabriela?BuendíaEmail author  Francisco?Cordero 《Educational Studies in Mathematics》2005,58(3):299-333

We start from the assumption that school mathematics knowledge could be better explained if social practices were considered to be generators of knowledge. This perspective changes the way we look at what school mathematics knowledge is and what it takes to teach and learn it. In this article, we will present a teaching situation about periodic functions, which was designed with this perspective in mind. The design was based on the assumption that the scientific notion of periodic function is related with the social practice of prediction. In the situation, prediction as a social practice is transformed into a situational line of argument which redefines that which is periodical. The situation brings into play meanings for the repetition of a movement, which takes place in time in the context of graphs of functions. Our analysis of the situation will focus on the prediction tools that participants generated in order to define that which is periodical. We will conclude with some implications of our observations for the teaching of mathematics.  相似文献   

Growing Early Childhood Education Teachers in Rural Areas     

Donna Hannaway  Poomoney Govender  Petro Marais  Corinne Meier 《Africa Education Review》2019,16(3):36-53

Currently in South Africa, there are over 20 000 underqualified Grade R teachers who are enlisted into service to ensure that Grade R teaching can continue. The aim of the study reported on was to investigate the challenges and needs faced by underqualified teachers in order to promote the professional development of teachers teaching in rural areas. Phenomenology was used as the research design. By means of a qualitative research approach, purposeful sampling selected only underqualified early childhood education (ECE) teachers teaching in rural schools for more than five years or more in three provinces, as well as their school principals. The findings revealed the following needs and challenges: the need for resources; poor infrastructure; lack of parental involvement; overcrowded classrooms; the need for in-service training; needs of the rural communities; and support from an open distance learning (ODL) institution.  相似文献   

Physical Chemistry in Practice: Evaluation of DVD Modules     

James U. Dyer  Marcy Towns  Gabriela C. Weaver 《Journal of Science Education and Technology》2007,16(5):431-442

The Physical Chemistry in Practice (PCIP) DVD contains video programs (modules) and experimental data that present the research of scientists working in applications of physical chemistry. The DVD allows students to learn about cutting edge research in physical chemistry while making connections to the theoretical concepts learned in lecture. PCIP-DVD allows students to build verbal and pictorial models of the experiments, instrumentation, and data that can be integrated with the material covered in lecture. For each of the modules implemented students were tested in a pre/post test fashion over content related objectives. For every module the students demonstrated a statistically significant improvement in their understanding.  相似文献