Kinematic analysis of the drag flick in field hockey     

Rony Ibrahim  Gert S. Faber  Jaap H. van Dieën 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(1):45-57

Attaining high speed of the stick head and consequently of the ball is essential for successful performance of the drag flick in field hockey, but the coordination pattern used to maximise stick head speed is unknown. The kinematics of the drag flick was studied in ten elite hockey players who performed twenty shots each towards a target located 1.5 m high. A 150 Hz active marker motion analysis system was used, alongside two force plates to detect foot touchdown. Angular velocity and contribution to stick endpoint speed of upper body joints were analysed. Repeated measures ANOVA was used to compare timing of onset and peak angular velocities between joints. Participants used a kinematic pattern that was close to a proximal-to-distal sequence. Trunk axial rotation and lateral rotation towards the target, right wrist flexion and left wrist extension were the main contributors to stick endpoint speed. Coaches should emphasise trunk rotations and wrist flexion and extension movements for maximising stick head speed. Given the high level of the participants in this study, the coordination of joints motions, as reported here, can serve as a guideline for drag flick training.  相似文献   

Popularizing Nanoscience: The Public Rhetoric of Nanotechnology, 1986-1999     

Brenton Faber 《Technical Communication Quarterly》2006,15(2):141-169

This study examines the representations of nanoscale science and technology in written popular media from 1986 to 1999. Nanoscale science is an emergent field that examines the principles of matter at a molecular level. This article presents the representations through which nanoscale science and technology was initially introduced to the public. Written popular media influences the ways stakeholder groups perceive, support, and fund science and technology. From 1986 to 1999 this field was introduced to the general public through articles in newspapers, magazines, and other general interest publications. During this period, nanoscale science and technology had a fragmented public image as proponents of various representations of the field competed for legitimacy. The study demonstrates that the emergence of nanoscience and technology in the popular media occurred as a competitive and transitional social-rhetorical process in which the new emerged within existing and established understandings of science but was mediated by biographical and other social accounts of the research.  相似文献   

A Feedback Procedure for Teacher Trainees Working with Parent Tutors of Reading     

Wilson Henderson  Ted Glynn 《教育心理学》1986,6(2):159-177

Abstract In this pilot study, four third‐year teacher trainees were trained to give feedback to parents who were tutoring their own children in reading using the Pause Prompt and Praise procedures. The trainees learnt to teach the procedures to the parents and then to give feedback by prompting parents to remember and explain their own tutoring behaviours. Baseline measures showed that when trainees were asked to help parents in any way they could to implement the procedures, they used very intrusive forms of prompts. Following training trainees used much less intrusive forms of prompts, giving parents more opportunity to remember and explain their own tutoring behaviours. It was argued that less intrusive forms of prompting when giving feedback may have been of more assistance to parents in learning the procedures than more intrusive forms of prompting, since parents may have learned to become more independent of trainee support. This, in turn, may have contributed to the substantial gains in children's reading levels which occurred.  相似文献   

Prevalence,School Progress and Referral of Mildly Retarded Children in Regular Classes     

Tony Cooper  Keri Wilton  Ted Glynn 《International Journal of Disability, Development & Education》1985,32(1):5-11

This study sought to determine the prevalence of mildly retarded children in a sample of 312 primary school classes (N (pupils) = 8,967). Schools were chosen at random from each of the eight Psychological Service districts of metropolitan Auckland; all Grade 2‐5 classes in the sample schools were included in the investigation. Eighty percent of the teachers surveyed believed they had one or more mildly retarded children in their classes, yielding an overall prevalence rate of 8.04 percent (N = 721). Approximately one‐third of the children designated as mildly retarded were considered by their teachers to be not coping academically as well as socially, but of these 75 percent had not been referred for special educational consideration. Comparisons among the eight districts revealed that prevalence/referral rates and characteristics of identified/referred children did not differ significantly across districts. Results are discussed in terms of their policy implications for the identification and referral of mildly retarded children in need of special educational services.  相似文献   

Book Reviews     

Ted Goodhew  Professor R. F. Dearden    John Alcock  Caroline Lodge 《Pastoral Care in Education》2013,31(3):231-240

Ted Goodhew, T.R.I.S.T. Advisory Teacher, Berkshire County Council, ‘New Directions in Pastoral Care’, Edited by Peter Lang & Michael Marland, 1985 Blackwell —

Professor R. F. Dearden, University of Birmingham, Profiles and Records of Achievement, Patricia Broadfoot (ed) 1986 Holt, Rinehart and Winston £6.50 paperback

Pat Salder, Education for Capability, Ed Tyrrell Burgess N. F. E. K./Nelson 1986 £10.95

John Alcock, University of Warwick, Solo Monologues for Drama,John Goodwin and Bill Taylor 1985 Edward Arnold Ltd £2.15

Caroline Lodge, White Hart Lane School, London, Sharing,Beryl Heather FPA Education Unit 1984 52pp £3.50  相似文献   

Acquisition and Management of Digital Content at the Library of Congress     

Ted Westervelt 《期刊图书馆员》2015,68(1-4):269-273

The Library of Congress has been actively building digital content within its collection for some years now. This article addresses this digital collection building, covering both the technical means and the practical results. It discusses the underlying philosophies that are guiding the Library of Congress and identifies the areas in which the Library wishes to expand its operations along with the key questions it faces currently in meeting this goal. Finally, it seeks to share the lessons it has learned in the process.  相似文献   

The Dutch motor skills assessment as tool for talent development in table tennis: a reproducibility and validity study     

Irene R. Faber  Maria W. G. Nijhuis-Van Der Sanden  Marije T. Elferink-Gemser  Frits G. J. Oosterveld 《Journal of sports sciences》2015,33(11):1149-1158

A motor skills assessment could be helpful in talent development by estimating essential perceptuo-motor skills of young players, which are considered requisite to develop excellent technical and tactical qualities. The Netherlands Table Tennis Association uses a motor skills assessment in their talent development programme consisting of eight items measuring perceptuo-motor skills specific to table tennis under varying conditions. This study aimed to investigate this assessment regarding its reproducibility, internal consistency, underlying dimensions and concurrent validity in 113 young table tennis players (6–10 years). Intraclass correlation coefficients of six test items met the criteria of 0.7 with coefficients of variation between 3% and 8%. Cronbach’s alpha valued 0.853 for internal consistency. The principal components analysis distinguished two conceptually meaningful factors: “ball control” and “gross motor function.” Concurrent validity analyses demonstrated moderate associations between the motor skills assessment’s results and national ranking; boys r = ?0.53 (P < 0.001) and girls r = ?0.45 (P = 0.015). In conclusion, this evaluation demonstrated six test items with acceptable reproducibility, good internal consistency and good prospects for validity. Two test items need revision to upgrade reproducibility. Since the motor skills assessment seems to be a reproducible, objective part of a talent development programme, more longitudinal studies are required to investigate its predictive validity.  相似文献   

Why do researchers decide to publish in questionable journals? A review of the literature     

Tove Faber Frandsen 《Learned Publishing》2019,32(1):57-62

Peer review is a cornerstone of scientific publication, and consequently, predatory journals are feared to be a threat to the credibility of science as they perform no or low‐quality peer review. The question of why researchers decide to publish in a questionable journal remains relatively unexplored. This paper provides an overview of the existing literature on why researchers decide to publish papers in questionable journals, specifically whether or not they search for a low‐barrier way to getting published while being aware that the chosen journal probably does not adhere to acceptable academic standards. The choice of a publication outlet can be seen as a submission tree that consists of various incentives, and explaining why authors publish in deceptive journals may thus consist of a combination of awareness and motivational factors. Awareness and motivation of diligent authors is very different from that of unethical authors. Unethical authors may use a lack of awareness to excuse their actions, but they may actively search for a low‐barrier way to getting published. As there are different types of authors who publish in deceptive journals, we need different approaches to solve the problem.  相似文献   

An industrial communications training program     

Ted J. McLaughlin 《Communication Studies》2013,64(2):43-53

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A Regional Approach to the Training of Deputy Heads     

Ted Wragg 《Cambridge Journal of Education》1979,9(2-3):107-111

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