Improving Museum Docents' Communication Skills

This article presents the results of a study evaluating a program to help museum docents improve accessibility for visitors with communication challenges (such as hearing, language and/or speech disorders). This was done by adapting docent presentations. The docents' speech patterns were evaluated before and after a training program, and showed significant improvements in the rate, duration, and use of pauses in their speech. There also was significant improvement in ensuring that view of their faces remained unobstructed—important for people with communication disorders—in order to facilitate the consistent visibility of their facial expressions and visual cues. The training was found to be effective in adjusting the docents' presentations so that the museum experience would be improved for visitors with communication challenges.     

美国解决全球气候变化政策解析

介绍了美国目前限制和减少温室气体排放的方法和政策及其影响,并在分析温室气体排放和全球气候变化的科学数据的基础上,对现行政策进行评述并追踪美国在减少温室气体排放方面所做的努力及这些努力中潜在的可能具有的政策效力。     

Variability in clubhead presentation characteristics and ball impact location for golfers' drives

The purpose of the present study was to analyse the variability in clubhead presentation to the ball and the resulting ball impact location on the club face for a range of golfers of different ability. A total of 285 male and female participants hit multiple shots using one of four proprietary drivers. Self-reported handicap was used to quantify a participant's golfing ability. A bespoke motion capture system and user-written algorithms was used to track the clubhead just before and at impact, measuring clubhead speed, clubhead orientation, and impact location. A Doppler radar was used to measure golf ball speed. Generally, golfers of higher skill (lower handicap) generated increased clubhead speed and increased efficiency (ratio of ball speed to clubhead speed). Non-parametric statistical tests showed that low-handicap golfers exhibit significantly lower variability from shot to shot in clubhead speed, efficiency, impact location, attack angle, club path, and face angle compared with high-handicap golfers.     

Effects of golf shaft stiffness on strain, clubhead presentation and wrist kinematics

The aim of this study was to quantify and explain the effect of shaft stiffness on the dynamics of golf drives. Twenty golfers performed swings with two clubs designed to differ only in shaft bending stiffness. Wrist kinematics and clubhead presentation to the ball were determined using optical motion capture systems in conjunction with a radar device for capturing ball speed, launch angle, and spin. Shaft stiffness had a marginally small effect on clubhead and ball speeds, which increased by 0.45% (p < 0.001) and 0.7% (p = 0.008), respectively, for the less stiff club. Two factors directly contributed to these increases: (i) a faster recovery of the lower flex shaft from lag to lead bending just before impact (p < 0.001); and (ii) an increase of 0.4% in angular velocity of the grip of the lower flex club at impact (p = 0.003). Unsurprisingly, decreases in shaft stiffness led to more shaft bending at the transition from backswing to downswing (p < 0.001). Contrary to previous research, lead bending at impact marginally increased for the stiffer shaft (p = 0.003). Overall, and taking effect sizes into account, the changes in shaft stiffness in isolation did not have a meaningful effect on the measured parameters, for the type of shaft investigated.     

Influence of shaft length on golf driving performance

The aim of this study was to determine how shaft length affects golf driving performance. A range of drivers with lengths between 1.168 m and 1.270 m, representing lengths close to the 1.219 m limit imposed by R&A Rules Limited (2008), were assembled and evaluated. Clubhead and ball launch conditions and drive distance and accuracy were determined for seven category 1 golfers (handicaps 0.21 +/- 2.41) who performed shots on a purpose-built practice hole. As shaft length increased from 1.168 m to 1.270 m, initial ball velocity increased (+ 1.8 m/s, P < 0.01). Ball carry (+ 4.3 m, P = 0.152) also increased, although not significantly so. Furthermore, as shaft length increased, for all club comparisons there was no decrease in accuracy. Ball launch conditions of spin components and launch angle remained unaffected by shaft length. Launch angle increased (0.8 degree, F = 1.074, P = 0.362) as driver shaft length increased. Our results show that clubhead and ball velocity together with ball carry tended to increase with no loss of accuracy.     

Competition,gender and the sport experience: an exploration among college athletes

Worldwide, sport and physical activity rates of women generally lag behind those of men. One reason for this could be the way that sport cultures typically frame and value competition. This study provides an examination of the meaning and impact of ‘competition’ on the sport participation experiences of men and women. Using Interpretative Phenomenological Analysis, individual and group interviews were conducted with 76 current and former male and female collegiate athletes from both varsity and club sports regarding the impact of competition on their sport experiences. Results revealed that women and men tended to view and interpret competition differently, which strongly impacted their sport experiences. Sport programming that embraces a balance of cooperation and competition may be valuable for attracting and retaining both male and female participants.     

National Media Coverage and the Creation of a Canadian ‘Hockey World’: The Winnipeg-Montreal Stanley Cup Hockey Challenges, 1899–1903

This essay examines media coverage of five Stanley Cup hockey championship series played between hockey clubs based in Winnipeg and Montreal from 1899 to 1903. Coverage of the Winnipeg–Montreal challenges contributed significantly to the growth of a Canadian ‘hockey world’ – and a broader ‘world of sport’ – during the late nineteenth and early twentieth centuries. First, press reports and telegraph re-enactments linked fans in Winnipeg and Montreal together. At the same time, newspapers in other Canadian centres provided coverage of Stanley Cup matches. As the media constructed a shared sports information system throughout Canada, people were drawn into a wide-ranging community of interest centred on sport. Telegraph bulletins, in particular, gave fans a strong sense of participation in games that were being played in other places. By 1903, Stanley Cup hockey challenges had become ‘national’ Canadian events, followed by audiences across the country through news stories and ‘live’ telegraph reconstructions.     

The [un]spoken challenges of administrator collaboration: An exploration of one district leadership team’s use of protocols to promote reflection and shared theories of action

This article explores the use of protocol-structured dialogue in promoting reflective practices and shared theories of action within a district leadership team. Protocols have been used to make individuals’ theories of action visible and subject to evaluation. This is important for leaders trying to establish coherence across a system; in order to establish coherence, individuals on leadership teams need to be able to surface, test, and sharpen and align their internal pictures of how change works. The author draws on qualitative data from a year-long study of one team as it prepared to implement a capacity-building initiative that would promote collaboration and reflection in schools across the district. Findings illustrate how, as administrators experimented with reflective practice using protocols, divergent theories of leadership’s role in setting a clear direction for school-based reflection emerged, with principals looking for district-wide goals to drive school-based reflection and the superintendent looking to leave decisions about goals to individual school leaders. Our findings suggest that the team’s capacity for aligning these theories was limited because protocol-structured dialogue was carried out as a generic problem-solving exercise. As such, it did not promote visible, productive reasoning in the system’s formal leader, the district superintendent. Moreover, protocol-structured discussion did not mediate the problematic effects of formal authority distinctions or longstanding relationships within the administrative leadership team.