Could knee joint mechanics during the golf swing be contributing to chronic knee injuries in professional golfers?     

Howie Carson  Jim Richards  Simon G. S. Coleman 《Journal of sports sciences》2020,38(13):1575-1584

ABSTRACT

Full three-dimensional movements and external moments in golfers’ knees and the possible involvement in injuries have not been evaluated using motion capture at high sample frequencies. This study measured joint angles and external moments around the three anatomical axes in both knees of 10 professional golfers performing golf drives whilst standing on two force plates in a motion capture laboratory. Significant differences were found in the knee joint moments between the lead and trail limbs for the peak values and throughout all stages during the swing phase. A significantly higher net abduction moment impulse was seen in the trail limb compared with the lead limb (?0.518 vs. ?0.135 Nms.kg^?1), indicating greater loading over the whole swing, which could contribute to knee lateral compartment or anterior cruciate ligament injuries. A significant correlation (r = ?0.85) between clubhead speed at ball contact and maximum joint moment was found, with the largest correlations being found for joint moments at the top of the backswing event and at the end of the follow-through. Therefore, although knee moments can contribute to high clubhead speeds, the large moments and impulses suggest that they may also contribute to chronic knee injuries or exacerbate existing conditions.  相似文献   

Good High Schools for Students with Disabilities     

Catherine Cobb Morocco  Cynthia Mata Aguilar  Karen Clay  Nancy Brigham  Naomi Zigmond 《Learning disabilities research & practice》2006,21(3):135-145

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Great Britain and allied scientific information: 1939–1945     

Richards PS 《Minerva》1988,26(2):177-198

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Consolidation of Black-dyed Māori Textile Artefacts: Evaluating the Efficacy of Sodium Alginate     

Catherine A. Smith  Rachel A. Paterson  Bronwyn J. Lowe  Rangi Te Kanawa 《文物保护研究》2018,63(3):139-154

Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change.  相似文献   

Coming Clean about Cleaning. Professional and Public Perspectives: Are Conservators Truthful and Visitors Useful in Decision-making?     

Katy Lithgow  Stavroula Golfomitsou  Catherine Dillon 《文物保护研究》2018,63(5):392-396

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Reasons for Student Engagement in Extra-Class Communication     

Stacy L. Young  Manuel D. Pulido  Catherine F. Brooks 《Communication Research Reports》2018,35(2):172-177

This study extends instructional communication research on extra-class communication (ECC) by presenting an integrative analysis comparing the explanatory utility of student- and instructor-oriented reasons for student engagement in frequent ECC. Results from 495 college students suggested that student-oriented reasons, specifically the relational and functional student motives, were the only significant, positive predictors of students’ perceptions of frequent ECC engagement. Other student motives (excuse making, participation, sycophancy) and perceptions of instructor approachability did not significantly predict perceived frequency of ECC engagement.  相似文献   

The Motivations of Book Publishers in Germany and Australia: An Empirical Comparison     

Albert Martin  Susanne Bartscher-Finzer  Anne Richards 《Publishing Research Quarterly》2018,34(1):69-88

Our study compares the motivations of Australian and German book publishers. The results demonstrate remarkable similarities, but also a significant difference regarding the effects of the publishers’ self-concept. In the German case the publishers with a dominant economic orientation are more proactive than the publishers with a dominant cultural orientation. In the Australian case, this correlation does not exist. The same difference holds for the relationship between the economic orientation and extrinsic motivation. We discuss these results and examine empirical evidence and theoretical suggestions to explain the differing findings. The data stem from surveys conducted in the two countries with responses of 196 (Germany) and 54 publishers (Australia).  相似文献   

EHCP Implementation in the Early Years: constrictions and possibilities     

Hazel Richards 《Support for Learning》2021,36(2):204-221

In England, Education and Health Care Plans (EHCPs) created changes for SENCOs, including those working in private, voluntary and independent (PVI) early years settings. Such SENCOs hold, as a minimum, a relevant Level-3 qualification, with subsequent training and support being optional, varied and sometimes difficult to access. This situation has implications for EHCP implementation and for the roles and responsibilities of SENCOs because effective realisation of the joint working, early identification and intervention prioritised in EHCPS require power, knowledge and skills. SENCOs from one Local Authority in England participated in this mixed-methods research. Identity theory and Bronfenbrenner's bio-ecological theory were applied to analyse the macro through to micro level influences. This revealed seven key influences: information and resources; ethos and support; quality of evidence; relationships; knowledge and skills; purpose and outcomes. This paper presents the manifestation of these in the experience of eight Early Years SENCOs working PVI settings.  相似文献   

Diverse socio-technical aspects of a digital archive of Aboriginal languages     

Catherine Bow 《档案与原稿》2019,47(1):94-112

ABSTRACT

A socio-technical approach is taken to explore a digital archive of Australian Indigenous cultural heritage. The Living Archive of Aboriginal Languages is considered in terms of what it is currently doing and what it was intended to do. Two ethnographic stories focusing on user interactions and the outcomes of an online survey serve to evaluate the effectiveness of the Archive from the perspective of different users. This is then juxtaposed with a consideration of the original grant application, outlining what was envisaged for the project. This analysis serves to highlight some of the contingent relations and diverse socio-technical aspects of a specific knowledge infrastructure, as it allows multiple forms of interaction, new connections and generative activities as people discover, access and interact with the content now and into the future.  相似文献   

The Potential Impact of COVID-19 on Student Learning and How Schools Can Respond     

Adam E. Wyse  Eric M. Stickney  David Butz  Amanda Beckler  Catherine N. Close 《Educational Measurement》2020,39(3):60-64

There is no denying the impact that the coronravirus disease (COVID-19) outbreak has had on many aspects of our lives. This article looks at the potential impact of COVID-19 on student learning as schools abruptly morphed into virtual learning environments using data from several instructional, practice, and assessment solutions offered by Renaissance. First, three hypothetical learning scenarios are considered using normative data from Star assessments to explore the potential impact on reading and math test performace. Next, data on Focus Skills are used to highlight which grades may have missed the most foundational math and reading content if instruction was stopped or reduced. Last, data from two of Renaissance's practice tools are used to evaluate whether students were practicing key skills following school closures. The article concludes that academic decline will likely occur but may be tempered by the increased use of practice tools; effects may look different for math and reading; and may impact grades and schools differently. As such, schools may need to leverage decision-making frameworks, such as the Multi-tiered Systems of Support/Response-to-Intervention (MTSS/RTI) framework, more than ever to identify needs and target instruction where it matters most when school begins in fall 2020.  相似文献