In-season changes in ventricular morphology and systolic function in adolescent female athletes     

Andrew M. Watson  Carol Coutinho  Kristin Haraldsdottir  Stacey Brickson  Warren Dunn  Marlowe Eldridge 《European Journal of Sport Science》2018,18(4):534-540

Purpose: To evaluate the influence of physical maturity on the changes in ventricular morphology and function with sport training in female youth athletes.

Methods: Thirty-two female athletes (age 13–18 years) underwent height and weight measurement and 2-D echocardiographic evaluation immediately prior to, and following, a 20-week soccer season. Pre- and post-season left ventricular end-diastolic diameter (LVEDD), end-diastolic volume (LVEDV), ejection fraction (LVEF), stroke volume (LVSV), mass (LVM), and posterior wall thickness (LVPWT), right ventricular end-diastolic diameter (RVEDD), end-diastolic area (RVEDA), and fractional area change (RVFAC), and interventricular septal thickness (IVST) were compared. In-season change in each variable was compared across pre-season hours of vigorous physical activity (0–1, 2–3, >3 hours).

Results: Significant increases were identified in LVEDV (51.3?±?10.4?v 56.4?±?9.6?ml/m², p?=?0.001) and RVEDA (10.5?±?1.9?v 11.3?±?2.5?cm²/m², p?=?0.040), but not LVEDD, LVM, LVPWT, LVSV, RVEDD, RVEDA, RVFAC, or IVST (p?>?0.05 for all). In-season changes in echocardiographic variables did not differ across hours of pre-season vigorous physical activity (p?>?0.05 for all).

Conclusion: Among female adolescent soccer players, in-season training elicits changes in resting ventricular volume, but not wall thickness or systolic function. These adaptations do not appear to be influenced by pre-season physical activity level.  相似文献   

On my honor: creating space for thinking and living Girl Scouts differently in (post)colonial Hawai‘i     

Patricia Espiritu Halagao  Julie Kaomea 《Gender and education》2018,30(7):866-881

Girl Scouts aims to foster leadership by encouraging girls to discover themselves, make connections, and take action to make the world better. This paper chronicles the five-year journey of eight professional mothers of color who sought to provide their daughters with a space to ‘think and live differently’ as Girl Scouts and young women of color in (post)colonial Hawai‘i. Through questionnaires and a semi-structured focus group interview, mothers reflect on their original intentions to create a ‘safe space’ for their daughters to engage with the politics of gender, race, and class and to rethink, review, and rework their identities. Mothers’ reflections reveal success in creating safe spaces for the critical analysis of gender, but comparatively less success in critical analyses of race and class – a phenomenon that the mothers suggest may have been complicated by (1) the enduring myth of Hawai‘i as a multicultural paradise, (2) Girl Scouts’ assimilationist history, and (3) the mothers’ own relatively privileged positions.  相似文献   

Taking risks with a growth mindset: long-term influence of an elementary pre-service after school science practicum     

T. J. Cartwright  B. Hallar 《International Journal of Science Education》2018,40(3):348-370

In this study, we present the long-term influence of an after school science practicum associated with an elementary science methods course. The practicum or field experience could be considered a community-based service learning programme as it is situated both within and for the community. Study participants included eight third- and fifth-grade teachers who had participated in elementary science methods courses; four of these teachers participated in the after school teaching practicum while four participants experienced a more traditional observation-based elementary science practicum. All of these teachers were in their second or third year teaching which was 3–4 years after taking the methods course. Investigation methods included questionnaires, field observations and semi-structured, individual interviews. Teachers more regularly utilised reform-based teaching strategies and cited the after school teaching practicum as preparing them to use these strategies in their own classrooms. All teachers exhibited a growth mindset to some degree, but the after school practicum participants did demonstrate a wider use of reformed-based teaching strategies and a higher growth mindset. Elementary teachers perceive risk associated with these key aspects of instruction: (1) managing instruction and classroom management, (2) teaching science through guided inquiry, and (3) overcoming adoptions in other ‘mandated’ curriculum like math and reading.  相似文献   

Optimising the blended learning environment: the Arab Open University experience     

Tahrir Hamdi  Mohammed Abu Qudais 《Open Learning》2018,33(1):46-62

This paper will offer some insights into possible ways to optimise the blended learning environment based on experience with this modality of teaching at Arab Open University/Jordan branch and also by reflecting upon the results of several meta-analytical studies, which have shown blended learning environments to be more effective than their face to face and online only counterparts. Three key elements will be presented as important ways for improving the blended learning environment: forging genuine collaborative partnerships between institutions in terms of the team-writing of Open and Distance Learning (ODL) material, adopting a more theoretically based instructional approach, such as the cognitive apprenticeship (CA) model, which emphasises making thinking visible and developing a comprehensive understanding of blended education in order to help students achieve their educational goals.  相似文献   

Cooperative Governance of Successful Public Schooling: Successes,Frustrations and Challenges     

Erika Serfontein 《Africa Education Review》2018,15(4):67-83

In search of embodying values that underpin democracy at school level, the objectives of the article include exploring expectations generated by the constitutional dispensation (Constitution of the Republic of South Africa, 108/1996, section 41) and delineating those moulded by the South African Schools Act (84/1996, Preamble). While the latter formally signify a State-education-partnership, the intention for teachers, learners and parents to accept especially governance responsibilities towards school democracy prompted our focused three-way alliance between parent-teacher-learner parties for the purpose of this article. Our conceptual framework is informed by Permuth, Mawdsley and Silver (2015), who contend that the essentially new facet of moving towards integrating qualitative research with doing traditional legal research could expand legal reasoning and even complement it with empirical credibility. Authenticated by Adler (2015), the article therefore combines focusing on cooperative governance as an act to shape schooling in the traditional legal way (by asking what questions) with qualitative research features to inform us by also asking how and why questions. We chose a documentary design with a comparative angle; selected documentary resources; and took an exploratory approach to gain understanding and weigh the investigated documents by comparing and appraising primary and secondary sources. We also regarded whatever was embedded yet not recorded as similarly important to what was recorded and how a specific concept was extended (De Waal and Serfontein 2015). Reviewing relevant case law, we present an overview of cooperative school governance progress; a constitutional challenges-based intervention; continuous acceptance of responsibility and accountability; and successes, frustrations and challenges concerning the future pathway to successful schooling. Given the snowballing set of demands on public schools, the catch is for partners to know each other's strengths and weaknesses so that balanced contributions will cause governance towards quality education. The drastic parental governance and leadership role-change, with higher moral-social responsibility levels, calls for carefully designed conferences to guide parent-partners’ exercising the necessary discretion underpinned by critically considering the significance of serving society.  相似文献   

An investigation into the complex process of facilitating effective professional learning: CPD tutors’ practices under the microscope     

Kyriaki Makopoulou 《Physical Education & Sport Pedagogy》2018,23(3):250-266

Background: Research evidence on what makes CPD effective is accumulating. Yet, fundamental questions about the specific features that lead to programme success. Furthermore, very little research investigates the nature and quality of CPD providers’ (tutors) practices. Taking a closer look at how CPD providers support teachers to learn is therefore an important direction for research in order to offer specific guidance on how to design and deliver future CPD programmes for maximum impact.

Purpose: The present study aimed to advance this line of inquiry by seeking to examine tutors’ perceptions and practices in the context of a short course on Inclusive Physical Education. Two research questions were addressed: (1) What were the tutors’ perceptions of effective CPD delivery? And (2) How were these interpretations evidenced in practice? The short course, delivered by 40 different tutors across the country, was part of a National CPD programme which reached and educated over 5000 school staff in England. The scale of this programme thus offered an ideal setting in which to address the research questions.

Participants and setting: A case study design was adopted where the case was identified at the level of individual courses. A cluster sampling procedure was adopted (one cluster for each of the nine geographical areas in England). Where possible, systematic sampling within the nine clusters was employed (i.e. collect evidence from the first two courses delivered in each cluster each year). A total of 27 courses, delivered by 20 tutors across eight geographical areas in England, were selected as cases and all tutors involved in their delivery were invited to participate in the study.

Data collection: To explore tutors’ perceptions of effective CPD delivery (research question 1), qualitative data were collected via an online questionnaire and individual interviews. To examine how these interpretations were evidenced in practice (research question 2), both quantitative and qualitative data were collected via systematic observations and ethnographic field notes.

Data analysis: Qualitative data were analysed using a constructivist approach to grounded theory. Quantitative data from the observations were entered into SPSS version 21 (IBM Statistics) for analysis.

Findings: Findings indicate that tutors’ perceptions and beliefs did not always materialise. Data from the observations suggest variation in the ways tutors structured, supported and facilitated professional learning. This variation was evident not only in the actual time dedicated to practical vs. theoretical activities and active vs. passive learning opportunities but also in tutors’ ability to facilitate professional learning. This finding suggests that there is a significant set of skills involved in supporting, nurturing and challenging professional learning in CPD contexts. It is therefore important to consider how tutors can be best supported to develop and implement these skills effectively.

Conclusion: The results consolidate existing understandings about the importance of (inter)active and practical learning opportunities in CPD; but also add nuance and detail on the diverse ways in which tutors engaged participants in the learning process. Findings draw our attention to the important issue of the selection and continuing education of CPD tutors.  相似文献   

Inter-agency cooperation in the quality assurance of transnational education: challenges and opportunities     

Fabrizio Trifiro 《Quality in Higher Education》2018,24(2):136-153

This paper presents the findings of a study undertaken by the United Kingdom Quality Assurance Agency for Higher Education (QAA), with support from the International Network for Quality Assurance Agencies in Higher Education (INQAAHE), aimed at investigating the challenges and limits to cross-border cooperation in the quality assurance of transnational education. The study builds on the outcomes of the recently concluded Erasmus Mundus project Quality Assurance of Cross-Border Higher Education (QACHE) and in particular the QACHE Toolkit developed as part of the project to foster cooperation between quality assurance agencies in quality assuring transnational education. Based on the responses to a survey sent to QAA’s partner agencies in key sending and receiving countries of transnational education, the study extract recommendations to agencies to help them developing viable strategies for inter-agency cooperation, identifying concrete ways in which they might or might not cooperate across borders.  相似文献   

Student‐Generated Pre‐Exam Questions is an Effective Tool for Participatory Learning: A Case Study from Ecology of Waterborne Pathogens Course          下载免费PDF全文

Max Teplitski  Tracy Irani  Cory J. Krediet  Mariachiara Di Cesare  Massimiliano Marvasi 《Journal of Food Science Education》2018,17(3):76-84

This multiyear study helps elucidate how the instructional practice of student‐generated questions support learning in a blended classroom in science, technology, engineering, and mathematics subjects. Students designed multiple‐choice pre‐exam questions aimed at higher levels of learning, according to Bloom's taxonomy. Student‐generated questions were edited by the instructor and then discussed by the students in the classroom and in an online forum. We tested the hypothesis that this intervention improves student learning, measured as student achievement on the exam following the intervention, and compared to student achievement on the traditional exam (prior to which a review session focused on instructor‐led recitation of the key concepts). Following the intervention in all years, average grade on the post‐intervention exam increased by 7.44%. It is important to point out that not all students benefited equally from this activity. Students who were in the 4th quintile (60% to 80%) based on the results of the 1st exam demonstrated the highest achievement improving their performance on average by 12.37% percentage points (measured as a score on the 2nd exam). Gains were not observed in the semesters when the intervention was not implemented. In this study we provided students detailed instructions on how to design questions that focus on testing higher levels of learning.  相似文献   

The Importance of Principals Supporting Dual Language Education: A Social Justice Leadership Framework     

David DeMatthews  Elena Izquierdo 《Journal of Latinos & Education》2018,17(1):53-70

Recent calls for social justice to be a key aspect of principal preparation have been made, but content related to the efficacy of dual language education has been a neglected area of educational leadership research, coursework, and principal preparation standards. We draw on scholarship focused on dual language education, social justice leadership, and the new Professional Standards for Educational Leadership to describe how principals can create dual language programs and lead for social justice and conclude with implications for preparation programs.  相似文献   

面子、奖罚与知识共享的跨层次研究          下载免费PDF全文

段光  庞长伟  金辉 《科研管理》2018,39(8):161-168

基于激励的“挤出效应”,研究面子观对个体知识共享行为的影响,以及团队奖罚的跨层次调节效应。以74个知识团队为样本的跨层次实证分析表明：挣面子与知识共享正相关,而丢面子与知识共享负相关;团队奖罚会弱化挣面子对知识共享的促进作用,也会弱化丢面子对知识共享的抑制作用,表明团队奖罚对面子的作用存在挤出效应。最后,提出了相应的管理建议与对策。  相似文献