On the acoustic signature of golf ball impact

In this paper, we present results on the measurement and analysis of the sound that is produced by the sharp impact loading of a golf ball by a flat massive object (e.g. the face of a golf club). We discuss: (a) the motivation for such a study; (b) some necessary background information on how golf balls vibrate; (c) the techniques used to acquire and analyse the data; and (d) an analysis of the sound made by dropping balls on a smooth, massive concrete target surface. These results establish a simple method for rapid and non-destructive measurement of the effective high-frequency elastic shear moduli of balls and ball cores.     

Interaction of wrestling shoe and competition surface: effects on coefficient of friction with implications for injury

The purpose of this study was to determine whether there is a significant difference in the co-efficient of friction (Fc) between old versus new wrestling shoes and mats and to investigate the effect of perspiration. Fc was measured by dragging a weighted shoe over a wrestling mat surface and measuring the vertical and horizontal forces produced. Three different shoe conditions were assessed over two mat types for both wet and dry conditions for a total of 12 conditions. To simulate the wet condition, saline solution was smeared over the surface of the mat. There was a significant effect of shoe, mat, and wet/dry conditions. In addition, significant interactions of shoe by mat, shoe by dry/wet, and mat by dry/wet were observed. Overall, Fc was 36% higher for the new wrestling mat compared to the old wrestling mat. Application of the saline solution reduced Fc by 14% compared to the dry condition. Comparison of the mean Fc for all three shoe types revealed the Fc for the older design shoe was 23% to 28% lower than the brand new shoe and the worn newer design, respectively. A high Fc, such as in the new mat/new shoe combination, has the potential to increase the risk of knee and ankle injuries by fixing the foot more securely to the ground.     

‘They think it’s all Dover!’ Popular newspaper narratives and images about the English football team and (re)presentations of national identity during Euro 2012

The 2012 UEFA European Football Championship (‘Euro 2012’) – Europe’s quadrennial football bonanza was held in Poland and the Ukraine between June 8th and July 1st. Occurring between Elizabeth II’s Diamond jubilee and the London 2012 Olympic Games, the eyes of the media were fixated on the pride and joy of English football, its men’s national team. With national consciousness at an all-time high, articles in England’s tabloid, ‘red-top,’ daily national newspapers The Sun and Daily Mirror were tracked for three weeks as they lavished their attentions on the national pastime. Their coverage of the English team reflected a heightened consciousness of English national identity. Drawing on Guibernau’s strategies for creating and uniting citizens around a collective national identity, this study examined how England’s popular media presented and represented England’s national identity to reflect the real and imagined versions of Englishness during this major sporting event.¹1. Montserrat Guibernau, The Identity of Nations (Cambridge: Polity, 2007). By focusing on The Sun and Daily Mirror’s narratives about, and images of, the English team during the Euro 2012 tournament, this paper focuses on how English national identity ebbed and flowed during a time of seismic change within the country. Shaped by an inductive textual analysis, this paper shows how the press fluctuated between optimistic notions of the present and future English national identity and traditional ‘olde England’ in an almost formulaic fashion.     

FAST-Future Academic Scholars in Teaching: A High-Engagement Development Program for Future STEM Faculty

Doctoral granting institutions prepare future faculty members for academic positions at institutions of higher education across the nation. Growing concerns about whether these institutions are adequately preparing students to meet the demands of a changing academic environment have prompted several reform efforts. We describe a professional development model designed to prepare the future faculty to integrate the multiple components of academic careers. The program emphasizes the study and application of effective teaching practices centered on student learning and assessment and expectations for faculty careers. We describe the impact of the program on its participants.     

明星与政治

Bono vs.Pretty Much Eyerything博诺vs .几乎每件事Bono befriends O’Neill and Ghana President JohnKufuor. His Case:You name it,he’s trying to fix it:hunger,education,health care,orphans,whatever makes peopleunhappy;lately,he's pushing debt relief for the ThirdWorld nations and stopping the spread of AIDS in Africa.     

Antenarrative and managerial practice

An antenarrative approach to organizational communication acknowledges the fragmented, collective, situated, and performative nature of organizational stories and storytelling. Adopting an antenarrative approach to managerial practice focuses our attention on the ways individuals manage the multi‐voiced nonlinear character of organizfitional life. Antenarrative theory and its significance for managerial practice is overviewed followed by an explication of how an organizational consultancy firm has developed systemic story making as a core practice for managing the multiple, often conflicting stories comprising organizational experience. Systemic story making raises significant issues regarding how antenarrative theory may consider the relationships among stories, inquiry, and change.     

Land degradation,government subsidy,and smallholders’ conservation decision: the case of the loess plateau in China

Land degradation is one of the severe environmental problems in China. In order to combat land degradation, a soil conservation program was introduced since 2000 to reduce soil erosion by converting slope-cultivated land into forestry and pasture. This paper represents the first systematic attempt to investigate the impact of the soil conservation program on land degradation in the loess plateau. The results indicate that the soil conservation program to convert slope fields into forest or pasture is an effective way to combat soil erosion. However, a subsidy that is higher than profit of land use activity of slope fields before their conversion into forest and pasture is needed to encourage farmers to join the conservation program. A policy measure to encourage and assist farmers to develop sedentary livestock by using crops produced from fields as well as fodder and forage grass from the converted slope fields might contribute to combat soil erosion. Increase in off-farm job opportunities may encourage households to reduce cultivation in slope fields. That implies a policy measure to encourage rural urbanization might contribute to combat soil erosion.     

The long-term athlete development model: physiological evidence and application

Within the UK, the "Long Term Athlete Development" (LTAD) model has been proposed by a variety of national governing bodies to offer a first step to considering the approach to talent development. The model, which is primarily a physiological perspective, presents an advancement of understanding of developing athletic potential alongside biological growth. It focuses on training to optimize performance longitudinally, and considers sensitive developmental periods known as "windows of opportunity". However, it appears that there are a number of problems with this theoretical model that are not necessarily transparent to coaches. Principally, the model is only one-dimensional, there is a lack of empirical evidence upon which the model is based, and interpretations of the model are restricted because the data on which it is based rely on questionable assumptions and erroneous methodologies. Fundamentally, this is a generic model rather than an individualized plan for athletes. It is crucial that the LTAD model is seen as a "work in progress" and the challenge, particularly for paediatric exercise scientists, is to question, test, and revise the model. It is unlikely that this can be accomplished using classical experimental research methodology but this should not deter practitioners from acquiring valid and reliable evidence.     

To be genuine in artificial circumstances: evaluating the theatre analogy for understanding teachers’ workplace and work

This paper provides teachers and teacher educators with food for thought by developing a broad, contemporary re-evaluation of the often-used analogy between teaching and the theatre. It does so by synthesizing insights from scholarly works in education with insights from writing about theatre, including both historical work and published interviews with practicing stage actors. This approach throws into relief particular ways in which teaching does and does not resemble acting as described by its present-day practitioners. A key parallel is observed between the central challenges faced by teachers and actors: acting requires being truthful in imaginary circumstances, while teaching requires being genuine in artificial circumstances. Using work on bildung, the nature of this challenge is examined, and a call is made to help teachers and students better appreciate the intimate, reciprocal and shared nature of good teaching – a challenge in a culture where corporate interests aggressively promote personalized and “anytime, anywhere” learning. The paper also addresses the phenomenon of massive online courses, which enthusiasts like to believe teach themselves. This idea, I suggest, is as absurd as the notion that a great theatre building could obviate the need for a strong cast. .