Elite tennis player sensitivity to changes in string tension and the effect on resulting ball dynamics

Eighteen elite male tennis players were tested to determine their ability to identify string tension differences between rackets strung from 210 N (47 lb) to 285 N (64 lb). Each player impacted four tennis balls projected from a ball machine before changing rackets and repeating the test. Eleven participants (61%) could not correctly detect a 75 N (17 lb) difference between rackets. Only two participants (11%) could correctly detect a 25 N (6 lb) difference. To establish whether varying string tensions affected ball rebound dynamics, the ball’s rebound speed and landing position were analysed. The mean rebound ball speed was 117 km h⁻¹, with only the trials from the 210 N racket producing significantly lower (P < 0.05) rebound speeds than the 235 N and 260 N rackets. This is contrary to previous laboratory-based tests where higher rebound speeds are typically associated with low-string tensions. The anomaly may be attributable to lower swing speeds from participants as they were not familiar with such a low string tension. Ball placement did not appear related to string tension, with the exception of more long errors for the 235 N racket and fewer long errors for the 285 N racket. It was concluded that elite male tennis players display limited ability to detect changes in string tension, impact the ball approximately 6% faster than advanced recreational tennis players during a typical rallying stroke, and that ball placement is predominantly unrelated to string tension for elite performers.     

Collaboration in a Virtual World: Support for Conceptual Learning?

Immersive and semi-immersive Virtual Reality (VR) systems have been used for training in the execution of procedures, in exploring (often static) 3D structures such as architectural designs or geographical features, and in designing buildings or constructing molecules. In a separate line of technological development, the availability of distributed computing capabilities has led to VR systems that provide facilities for groups of students that are geographically separated to learn together in a collaborative manner. However, relatively little work has been done to investigate the advantages of such Collaborative Virtual Environments (CVEs) for learning the underlying conceptual content.A pilot study is described which features several worlds designed as part of the Distributed Extensible Virtual Reality Laboratory (DEVRL). The basic results are presented along with a discussion as to how the research could be moved forward to provide improved support for conceptua l learning. The discussion also raises the issues of how the interfaces design affects conceptual learning; of navigation and conceptual learning; of the role of collaboration in learning; and of the difficulties associated with constructing dynamic VR worlds. © IFIP, published by Kluwer Academic Publishers     

Effects of focus of attention on baseball batting performance in players of differing skill levels

This study addressed the question, what should baseball players focus their attention on while batting? Less-skilled and highly skilled (college) baseball players participated in four dual-task conditions in a baseball batting simulation: two that directed attention to skill execution (skill/internal [movement of the hands] and skill/external [movement of the bat]) and two that directed attention to the environment (environmental/irrelevant [auditory tones] and environmental/external [the ball leaving the bat]). Batting performance for highly skilled players was best in the environmental/external condition and worst in the skill/internal condition. Performance of less-skilled batters was significantly better in the two skill conditions than in either of the two environmental conditions. We conclude that the optimal focus of attention for highly skilled batters is one that does not disrupt proceduralized knowledge and permits attention to the perceptual effect of the action, whereas the optimal focus of attention for less-skilled batters is one that allows attention to the step-by-step execution of the swing.     

Trends Influencing the Growth of Digital Textbooks in US Higher Education

Over the next 5 years, digital textbook sales in the United States will surpass 25% of combined new textbook sales for the Higher Education and Career Education markets. Moreover, we expect digital to be the dominant form factor in Higher Education textbooks inside of 7 years. This growth in digital textbooks will boost revenues in excess of $1.5 billion within 5 years (Private: Digital Textbooks Reach the Tipping Point in the US Higher Education—A Revised 5-Year Projection). This growth will also create avenues for new digital product models, allow new content publishers to enter the textbook market, lead to fundamental shifts in purchasing patterns around learning materials, and expedite the formal adoption of open educational resources to augment premium digital content.     

Building colleges for the future: pedagogical and ideological spaces

This article focuses on the Building Colleges for the Future (BCF) initiative (2008) which saw a wave of new-build Further Education (FE) colleges spring up across England in the final years of the New Labour government. It draws on qualitative data from a research study focusing on four new-build colleges in the West Midlands of England to theorise the BCF initiative. Using theory derived primarily from Lefebvre, the paper contextualises BCF within a frame of neoliberalisation and discusses the impact of the ‘production of space’ represented by the initiative with a research focus on two areas: pedagogy and ideology. The main findings are that these new-build colleges can be interpreted as spatial expressions of policy-makers and others’ perceptions of teaching and learning; in ideological terms, they also trumpet a ‘new lifestyle’ and a ‘new art of living’ for FE staff and students that is however, in tension with residual pedagogical practices and values. The article concludes that despite being an expression of neoliberal abstract space, these new-builds can still be seen as providing a frame for alternative individual and collective encounters with education which may subvert and outlast the processes of neoliberalisation that they appear to embody.     

College re-culturing,marketisation and knowledge: the meaning of incorporation

The further education (FE) sector in England has experienced two decades of marketisation. This article takes as its focus the first five years of incorporation (1993–1998) for one case study college in a city (‘Coppleton’) in the West Midlands of England, five years that were dominated by a contract dispute. Data from interviews with trade unionists active in Coppleton College (anonymised name) and from a trade union archive are set against selected official College documents in a genealogical enquiry into the college's corporate identity as an educational institution and employer during this time. This article looks behind the ‘legibility’ of the incorporated college and its knowledge production practices and focuses on excluded narratives, specifically the experiences of union activists caught up in a new era of industrial relations. In analysing the data, theories of New Public Management and marketisation reveal that Coppleton College has features that make it culturally distinct from its unincorporated forebear. The corporation as an institutional model – it is argued – brought with it features including institutional self-interest, an authoritarian culture, the erosion of trust, and the stifling of dissent as part of an incorporated view of knowledge production that worked against staff and the public interest.     

Partnership as cultural practice in the face of neoliberal reform

This article examines the nature of an on-going educational partnership between a Higher Education institution and a number of Further Education (FE) colleges in the West Midlands region of England, forged against the backdrop of sectoral marketisation and neoliberal reform. The partnership originates in the organisation and administration of Initial Teacher Education (ITE) courses for FE student-teachers across a range of sites. These collaborative ITE programmes prepare students to teach in FE settings and conceptualise the FE teacher as a critically informed practitioner, equipped to engage with research and knowledge production practices in the sector. The permeable grouping of teacher educators that has emerged identifies itself as a ‘community of practice’ and uses this concept in the development of a pattern of cultural interaction that scaffolds the continuing professional development of practitioners across the region. This article outlines the underpinning values of the Higher Education (HE)/FE partnership and explores how the partnership has responded to the neoliberal policyscape. Through a number of examples, the authors illustrate how this community seeks to translate shared beliefs into everyday practice, not least through a critical and participatory approach to practitioner research activities which challenges the performative practices that have come to dominate FE in England.     

A design model for lifelong learning networks

The provision of lifelong learning facilities is considered to be a major new direction for higher and distance teaching educational institutes catering for the demands of industry and society. ICT networks will in future support seamless, ubiquitous access to lifelong learning facilities at home, at work, in schools and universities. This implies the development of new ways of organizing learning delivery that goes beyond course and programme-centric models. It envisions a learner-centred, learner-controlled model of distributed lifelong learning. We present a conceptual model for the support of lifelong learning which is based on notions from self-organization theory, learning communities, agent technologies and learning technology specifications such as IMS Learning Design. An exploratory implementation has been developed and used in practice. We reflect on the findings and future directions.     

Sharpening a tool for teaching: the zone of proximal development

Vygotsky's Zone of Proximal Development (ZPD) provides an important understanding of learning, but its implications for teachers are often unclear or limited and could be further explored. We use conceptual analysis to sharpen the ZPD as a teaching tool, illustrated with examples from teaching critical thinking in zoology. Our conclusions are the following: teachers should assign tasks that students cannot do on their own, but which they can do with assistance; they should provide just enough assistance so that students learn to complete the tasks independently and, finally, teachers can increase learning gains by providing learning environments that enable students to do harder tasks than would otherwise be possible and by assigning the hardest tasks students can do with assistance. This analysis provides a sharp and useful tool for supporting learning across all curriculum areas.     

Perspectives on Age and Continuing Professional Development for Nurses: A Literature Review

The need for nurses to participate in continuing professional development (CPD) is growing to keep abreast of rapid changes in nursing care. Concurrently, the nursing workforce is growing older. Ageing leads to changes in biological, psychological, and social functioning. Little is known about the effects of age-related changes on nurses’ CPD. A literature review was conducted to examine whether and how CPD differs across age groups. A framework with five perspectives on age was used in an attempt to distinguish factors contributing to these age differences. Given the limited research on this topic with respect to nurses, we also included studies of workers in general. The literature search revealed 27 relevant studies. In general, older workers appeared less likely to participate in CPD, when considering formal learning activities and late-career workers (older than 50/55 years). We found no clear age patterns for motivation to participate in CPD, for learning outcomes, and for participation in informal and non-formal learning activities. The study showed that more nuanced results are found when studies distinguish at least three age groups. By using different perspectives of age, a comprehensive overview of age-related factors in CPD was generated and gaps in current research were identified. Recommendations for further research are discussed, such as the need for research on whether the types of learning activities that nurses undertake change with ageing.