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81.
We develop and use a numerical model to investigate the window of opportunity of free kicks in association football. The planar multibody forward dynamics model comprises a two segment leg model with joint actuations, a football, a wall and the turf. Contact mechanics is defined to model the impact of the foot and the ball’s interaction with the different elements in the environment. The optimum kick is determined using the global optimization algorithm differential evolution, requiring millions of kick simulations. The sensitivity of various solutions to parameter perturbation is investigated. It is concluded that toe kicks are theoretically superior to instep kicks, but are difficult to perform reliably. The results also show that small perturbations in parameters can lead to embarrassingly failed kicks.  相似文献   
82.
Derived from Basic Psychological Needs Theory (BPNT) is the notion that the social environment may promote athletes’ basic psychological needs, which are considered important for positive development and optimal motivational functioning. The present study investigated the predictive value of perceived justice and coach feedback on basic needs satisfaction in the context of youth football. Participants were Norwegian youth football players (N?=?532) participating in a national tournament. During the initial stage of the tournament, players completed the Coaching Feedback Questionnaire, Perceived Justice in Sport Questionnaire and Basic Psychological Needs in Exercise Scale under supervision. Regression analysis showed that perceived justice and positive/instructive coaching feedback positively predicted players’ needs satisfaction, while negative feedback and non-reinforcement/ignoring mistakes were not significant predictors of needs satisfaction. Together, perceptions of justice and coach feedback explained 24% of the variance in athletes’ needs satisfaction. The findings thereby indicate that athletes’ perceptions of fairness and coach feedback are important in understanding youth athletes’ needs satisfaction.  相似文献   
83.
This article studies similarities and disparities between the two nations England and Norway as they could be observed before and during the London 2012 Olympics, and discuss them in the historical perspective of geopolitical and sportive relations. The main perspective is how these relations have been seen and experienced from Norway. The article also studies whether the London Olympics of 2012 did present new forms of relationships between the two geographical neighbours. The article discusses the role of ball games, preferably team handball at the 2012 Games, as one example of where sporting interests differ. The article reflects upon these matters in a historical context. It builds upon traditional historical methods, document and media analysis. It also looks at the 2012 London Olympics against the background of the former London Games of 1908 and 1948, and the overall historical sports relations between England, ‘land of sport’ and a small country like Norway, who generally has been on the receiving end of these interchanges. Such asymmetric relationships invite to a critical use of perspectives like cultural imperialism and post-colonialism. The article discusses whether such perspectives can be fruitful also when one discusses matters between the so-called First World nations. As the title of the article indicates, Norway and England are both close, politically and culturally, while also being strangers to one another, e.g. in parts of the sports culture. The 2012 Olympics seemed to reinforce this impression.  相似文献   
84.
85.
This article summarizes a reformulation of the main findings and perspectives from a cross-sectional and longitudinal qualitative study of the development of 100 counselors and therapists. The results are presented as a phase model and as a formulation of 14 themes of counselor/therapist development. The following six phases are described: The phases of the lay helper, the beginning student, the advanced student, the novice professional, the experienced professional, and the senior professional. The themes describe central processes of counselor/therapist development. The themes are addressing different issues such as shifts in attentional focus and emotional functioning, the importance of continuous reflection for professional growth, and a life-long personal/profession integration process. Sources of influence for professional functioning and development are described. The results show consistently that interpersonal experiences in the personal life domain (early family life and adult personal life) and the professional life domain (interacting with clients, professional elders, and peers) are significant sources of influence for professional development.  相似文献   
86.
Inappropriate, aggressive and disruptive behaviour in the classroom can be detrimental to child and teacher well-being. This study involved a longer-term evaluation of the Incredible Years Teacher [Classroom Management] programme (IYTP) undertaken mainly within disadvantaged schools in south-west Ireland. The IYTP is designed to strengthen teacher classroom management competencies. Eleven teachers, who had previously participated in a group-randomised control trial (RCT), took part in a 12-month post-baseline follow-up assessment. Psychometric and observational measures were administered to assess teachers when interacting with children (n?=?217) in their classes. Qualitative data were collected from a sub-sample of teachers to explore their perceptions of programme impact and utility. The quantitative results showed some significant improvements in teachers’ classroom management, although few changes were recorded on teacher-child observation measures. Qualitative findings indicated continued implementation of proactive disciplining strategies and higher levels of teacher self-efficacy. These results suggest, albeit tentatively in view of the study limitations, that the IYTP can benefit teacher classroom management, as well as teacher well-being, particularly within disadvantaged schools where behavioural problems tend to be more prevalent. The IYTP could prove useful in improving teacher competencies and the classroom environment in the longer term, although a need for further research is indicated.  相似文献   
87.
Children as readers of picture books and the ways they respond to, and make meaning from, such texts are the focus of this article, which reports on a small-scale study undertaken in Norway and Wales, UK. The theoretical framing of the research draws on concepts of the multimodal ensemble in picture books and of the reading event as part of a social practice. The research design was developed from the team’s analysis of two texts, Pappa by Svein Nyhus (1998) and What does Daddy Do? by Rachel Bright (2009). Twenty-four children, who were 7 and 8 years old, took part in the study. This was built around two reading events for each book, staged as an immediate response and as a guided response. The data subsequently collected were analysed according to three overarching organisational principles, as book world, real world and play world. For both Daddy and Pappa, the first reading event showed the children’s responses were mainly directed towards exploring the book world. On the second reading event, references to the real world predominated for Daddy, while for Pappa the book world was again dominant. Across both reading events and for both books, the playworld revealed those occasions when the children expanded the meaning of the story, demonstrating an inventive ability to play with the text. Overall, the children’s responses moved fluidly across the three worlds, showing them to be energetically making connections between the reading, their experience of books and their own lives.  相似文献   
88.
Engen  Liv  Høien  Torleiv 《Reading and writing》2002,15(7-8):613-631
In the present study the mainfocus is on the impact of phonologicalawareness on reading comprehension. The studyinvolved 1300 children in Grade 1. Syllableawareness, phoneme awareness, word decodingand reading comprehension were each assessedwith two or three subtests. The results wereanalyzed by structural modeling. Due to themarked skewness observed for some of themanifest variables, separate analyses wereperformed for students with average worddecoding performance and for students with poorword decoding. Both among average and poordecoders, phonological awareness had a directimpact on reading comprehension, indicatingthat phonological factors play an independentrole in the processing of text. One possibleway to explain this observation is that atleast two critical factors in comprehension,vocabulary and short-term memory, are bothdetermined in part by phonological ability. Itmight also be the case that phonologicalawareness partly reflects metacognitiveprocesses assumed to be involved in readingcomprehension.  相似文献   
89.
This ethnographic study investigates cooperation between homes and schools in a Danish context from the perspective of ‘ethnic minority fathers’. I analyse how experiences of an ‘implicit’ mistrust can make ethnic minority fathers reluctant to cooperate with child institutions such as schools. It is argued that this mistrust is related to a hegemonic negative image of these fathers as oppressive, aggressive, and/or absent and careless. To conceptualize this mistrust, I argue for the concept of ‘mistrusted masculinity’. The analysis directs attention to the rhythms of the fathers’ everyday lives, offering examples of how the absence of some ethnic minority fathers in home–school cooperation may be explained by long working hours and ‘constraining jobs’. The research found that a ‘new role of the father’ is evident in the behaviours and attitudes of both ‘native Danish fathers’ and ethnic minority fathers.  相似文献   
90.
This paper is based on a systematic literature review relevant to classroom integration of computer technologies in schools. The purpose of this review is to gain an accumulated view of uses, impacts and implementations of 1:1 computing initiatives for school children. Unlike previous reviews this study is not limited to certain countries or certain technologies. It includes any devices used in 1:1 computing (not just the PC), and schools worldwide. The paper investigates the themes being researched regarding 1:1 use in schools as well as exhibits some which are not yet being researched but should be important to investigate. The study finds mixed results including positive, negative and no-effects. The findings of this review are expected to be useful both for academics as well as policy makers for gaining insights for further research and successful educational policy reforms.  相似文献   
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