Segmental sequencing of kinetic energy in a computer-simulated golf swing   总被引：1，自引：1，他引：0  

Ian C. Kenny  Alex J. McCloy  Eric S. Wallace  Steve R. Otto 《Sports Engineering》2008,11(1):37-45

The concept of the transfer of kinetic energy (KE) sequentially through the human body from proximal to distal segments is an influential concept in biomechanics literature. The present study develops this area of research through investigation of segmental sequencing of the transfer of KE by means of computer simulation. Using a musculoskeletal computer model previously developed by the authors, driven using three-dimensional kinematic data from a single elite male golfer, combined inverse and forward dynamics analyses enabled derivation of KE. Rigid body segments of torso, hips, arms and clubhead were examined in line with previous literature. Using this method a driver swing was compared to a 7 iron swing. Findings showed a high level of correlation between driver and iron peak KE and timing of peak KE relative to impact. This seems to indicate equivalent trunk and arms linear velocity, thus force applied, for an iron shot and a driver shot. There were highly significant differences between KE output for body segments for both clubs. In addition, peak KE magnitudes increased sequentially from proximal to distal segments during swing simulations for both the driver and 7 iron. This supports the principle of the summation of speed. However, timing of peak KE was not sequential from proximal to distal segments, nor did segments peak simultaneously. Rather, arms peaked first, followed by hips, torso and club. This seems to indicate a subjective optimal coordination of sequencing.

Ian C. KennyEmail:

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Managing a modern university: is it time for a rethink?     

John Daniel Kenny 《高等教育研究与发展》2009,28(6):629-642

The corporate approaches introduced in the late 1980s and now prevalent in universities in Australia have led to irrevocable changes in the way universities are managed and academics work. The management approaches widely applied in Australian universities are largely based on a top‐down corporate management model, with central control over policy and budget driven by the need to meet stringent external accountability requirements. This form of management rewards compliance and predictability. The economic environment over this period has changed drastically, becoming more global and uncertain. The prevailing management processes are not suited to the modern economic environment. A modern university is expected to operate more as an enterprise, but to do so effectively it needs flexible and responsive forms of management that are more inclusive of academics in the decision making process. This paper explores the organisational management literature and links it to the context in which universities operate. It considers the implications for managers and academics, as key stakeholders in a modern university, in this changeable environment.  相似文献   

Preparing Pre‐Service Primary Teachers to Teach Primary Science: A partnership‐based approach     

John Kenny 《International Journal of Science Education》2013,35(10):1267-1288

This paper reports on the effectiveness of a professional partnership approach to preparing pre‐service primary teachers to teach science. The study involved final year BEd pre‐service primary teachers at the University of Tasmania, each working in the class of a volunteer colleague teacher. The programme provided an authentic science teaching experience in which pre‐service teachers were supported to plan and teach a sequence of work in a chosen science topic and reflect upon the experience. Many reported an initial lack of confidence in science and no experience with teaching it during their normal practice teaching. During 2007 and 2008, teachers from 17 schools in Northern Tasmania volunteered to work with the pre‐service teachers in their classrooms for one lesson a week over a six‐week period. The findings indicated that this approach was an effective way to build the confidence of pre‐service teachers and may also have benefits for practising teachers.  相似文献   

Too cool for school? Musicians as partners in education     

Ailbhe Kenny 《Irish Educational Studies》2013,32(2):153-166

This article addresses the distinctive role that artists play in education. Although there has been a growing body of research internationally into artists involved in teaching and learning processes, the practice of artists in education in Ireland has developed in an uneven and sometimes disjointed manner. The field of ‘arts in education’ and issues surrounding its policy and practice in Ireland are investigated here. This article takes music as a focus in examining musicians' engagement in educational partnerships. Discussions around the role of artists in educational settings, successful partnerships and professional development are presented. Interviews carried out with a purposive sample of eight musicians are thematically analysed to provide meaningful insight into these debates drawn from actual practice. In this way, the article contributes to developing research into arts in education and, more specifically, music in education. In doing so, it hopes to underpin future policy, practice and stimulate further research in this area.  相似文献   

All Things Being Equal: The Development and Functionality of Occam's Reader     

Ryan Litsey  Kenny Ketner 《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(1-2):59-62

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The World of Music     

Warren Craig  Norm N. Nite  Jerry Osborne  Bruce Hamilton  Kenny Rogers  Len Epand 《Communication Booknotes Quarterly》2013,44(6):112-115

Musical Instruments of the World: An Illustrated Encyclopedia (New York: Bantam Books, 1978—$9.95, paper)

Warren Craig's Sweet and Lowdown: America's Popular Song Writers (Metuchen, N.J.: Scarecrow Press, 1978—$25.00)

Norm N. Nite's Rock On: The Illustrated Encyclopedia of Rock 'n Roll– The Modern Years, 1964-Present (New York: Crowell, 1978—$14.95)

Jerry Osborne and Bruce Hamilton's Popular and Rock Records 1948-1978 (Phoenix, Arix.: O'Sullivan Woodside & Co., 1978—$7.95, paper)

Kenny Rogers and Len Epand's Making it with Music: Kenny Rogers' Guide to the Music Business (New York: Harper & Row, 1978—$12.95)

Anthony Fawcett's California Rock/California Sound: The Music of Los Angeles and Southern California (Los Angeles: Reed Books, 1978—$19.95/9.95)

Rock Critics' Choice: The Top 200 Albums (New York: Quick Fox, 1978—$4.95, paper)

Alan Kinzler's Bob Dylan: The Illustrated Record (New York: Harmony Books/Crown, 1978—$15.00/8.95)

John Blair's The Illustrated Discography of Surf Music 1959-1965 (J. Bee Productions, P.O. Box 1584, Riverside, Calif. 92502—$4.00, paper)

Alan Lomax's Folk Song Style and Culture (New Brunswick, N.J.: Transaction Books (Rutgers), 1978—$6.95, paper)

Nat Hentoff's The Jazz Life (New York: DaCapo, 1978—$5.95, paper)

George Hoefer, Music on My Mind: The Memoirs of an American Pianist (New York: DaCapo, 1978—$6.95, paper)

Valerie Wilmer's As Serious as Your Life: The Story of the New Jazz (London: Allison & Busby, 1977—E6.50 or about $13.00)  相似文献   

Developing the characteristic spirit of publicly managed schools in a more secular and pluralist Ireland     

J. O’Flaherty  O. McCormack  J. Gleeson  B. O’Reilly  E. O’Grady  N. Kenny 《Cambridge Journal of Education》2018,48(3):317-333

This discussion paper considers the identification and definition of the ‘characteristic spirit’ of publicly managed schools in the Republic of Ireland. Some international approaches to values in publicly funded schools are introduced along with relevant contextual aspects of Irish education including the cultural diversity and secularisation of modern Irish society. The Irish Education Act (1998) gives ultimate responsibility for school values and ‘characteristic spirit’ to the school ‘patron’, a role legally separate from that of school ownership and school management. The underlying values of privately managed faith-based schools are well established. However, the ‘characteristic spirit’ of publicly managed Education and Training Board schools remains largely undeveloped. Appropriate responses to this challenge are identified and discussed.  相似文献   

Child abuse reporting: teachers' perceived deterrents     

Kenny MC 《Child abuse & neglect》2001,25(1):81-92

OBJECTIVE: There are three general objectives: First, to determine the number of reports of abuse made by teachers, their knowledge of child abuse laws and reporting procedures, and their perceived deterrents in reporting abuse; second, to determine if there were gender or ethnic differences in reporting; and third, to evaluate teachers responses to case vignettes. METHOD: A survey of 197 teachers was conducted. They were given a questionnaire that included demographic information, knowledge of child abuse laws and procedures, and two scenarios of legally reportable child abuse. RESULTS: Seventy-three percent of this sample reported that they had never made a report of child abuse, while those who had made reports made an average of one report. Only 11% of teachers reported that there were instances in which they believed abuse may have occurred, but failed to report. Additionally, these teachers felt that their pre- and post-service training did not adequately prepare them for abuse reporting. The most common reasons cited for not reporting abuse were fear of making an inaccurate report, feeling as though child protective services do not help families, and no apparent physical signs of abuse. There were no gender differences in reporting. The teachers' responses to the case vignettes were not consistent with their previous reports. CONCLUSIONS: In general, most teachers reported having never made a child abuse report. Although only a small percentage of teachers reported failing to report abuse, when presented with legally reportable case vignettes, many failed to report. The majority of teachers report receiving inadequate training in child abuse signs, symptoms, and reporting procedure. There is an obvious need for more education for teachers that addresses their perceived deterrents and aids them in feeling more confident in making reports of child abuse.  相似文献   

Children’s voices in mini soccer: an exploration of critical incidents     

Jimmy O’Gorman  Kenny Greenough 《Soccer & Society》2016,17(6):810-826

Since being adopted by The English Football Association as the preferred format of football to be played by children aged 10 and under, mini soccer has evolved and expanded into a popular activity for children. Yet little is known about the experiences of those participating in the game. In addition, adult-organized activities such as mini soccer are increasingly seen by parents and adults as suitable pursuits for their children to participate in. Yet the perspective of the child participating in mini soccer, as with many other activities, is largely ignored in academic literature. This is especially true in the social sciences, where research has historically been done ‘on’ children, rather than ‘with’ children. In this study, we seek to address this imbalance by including children as active participants in the research process. In doing so, we devised a methodology based on audiovisual methods to create participatory conditions between children and researchers interested in investigating their experiences of mini soccer in England. Children were asked to identify aspects of their experience which they felt were noteworthy to create video recordings of critical incidents that directly involved them participating in mini soccer. These were used as a discussion tool in focus groups to explore how and why children felt the incidents were critical, and how their experience of them shaped their participation. The methodology employed helped capture children’s differentiated views of the same incidents, and highlighted the diversity of their experiences. It is recommended that similar audiovisual methodologies are employed to inform future policy and strategy development in grassroots football that includes children as participants.  相似文献   

Academic work and performativity     

John Kenny 《Higher Education》2017,74(5):897-913

Neoliberal reforms in higher education have resulted in corporate managerial practices in universities and a drive for efficiency and productivity in teaching and research. As a result, there has been an intensification of academic work, increased stress for academics and an emphasis on accountability and performativity in universities. This paper critically examines these developments in institutions and draws on evidence from universities across the sector and a detailed case study in one university to identify the impacts of these changes on academic work. Given its ubiquity and the link of academic productivity to institutional experience, the paper argues that assumptions underpinning academic performance management need to be rethought to recognise the fundamentally intrinsic motivational nature of academic work. The paper explores the effects of performance management on individual academics as a case study in one institution and proposes a re-design of academic performance management to improve productivity based on the evidence.  相似文献