Infant maltreatment-related mortality in Alaska: correcting the count and using birth certificates to predict mortality     

Parrish JW  Gessner BD 《Child abuse & neglect》2010,34(12):951-958

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Different levels of leadership for learning: investigating differences between teachers individually and collectively using multilevel factor analysis of the 2011-2012 Schools and Staffing Survey     

Jared Boyce 《International Journal of Leadership in Education》2018,21(2):197-225

This study investigated the differences between how individual teachers perceive leadership for learning and how teachers collectively perceive leadership for learning, using a large nationally generalizable data-set of 7070 schools from the National Center for Education Statistics 2011–2012 Schools and Staffing Survey. This study used cross-validation multilevel factor analysis to find that individual teachers view leadership for learning as consisting of six factors (school influence, classroom control, collegial climate, student attendance, neighbourhood context, teacher commitment) whereas teachers collectively (e.g. as a faculty) perceive three factors that are non-isomorphic with the individual-level factors (instructional leadership, management, social environment). These results imply that teachers collectively have a functional view of leadership, while individual teachers have views more aligned to specific areas of influence. This article provides the beginning of a theoretical framework for future multilevel educational leadership research into teacher leadership and leadership for learning.  相似文献   

Running economy,mechanics, and marathon racing shoes     

Iain Hunter  Aubree McLeod  Dru Valentine  Tyler Low  Jared Ward  Ron Hager 《Journal of sports sciences》2013,31(20):2367-2373

ABSTRACT

The choice of marathon racing shoes can greatly affect performance. The purpose of this study is to metabolically and mechanically compare the consumer version of the Nike Vaporfly 4% shoe to two other popular marathon shoes, and determine differences in running economy. Nineteen subjects performed two 5-minute trials at 4.44m/s wearing the Adidas Adios Boost (AB), Nike Zoom Streak (ZS), and Nike Vaporfly 4% (VP) in random order. Oxygen uptake was recorded during minutes 3–5 and averaged across both shoe trials. On a second day, subjects wore reflective markers, and performed a 3-minute trial in each shoe. Motion and force data were collected over the final 30 seconds of each trial. VP oxygen uptake was 2.8% and 1.9% lower than the AB and ZS. Stride length, plantar flexion velocity, and center of mass vertical oscillation were significantly different in the VP. The percent benefit of the VP over AB shoe was predicted by subject ground time. These results indicate that use of the VP shoe results in improved running economy, partially due to differences in running mechanics. Subject variation in running economy improvement is only partially explained by variation in ground time.  相似文献   

Systematically increasing contextual interference is beneficial for learning sport skills     

Jared M. Porter  Richard A. Magill 《Journal of sports sciences》2013,31(12):1277-1285

Abstract

To better understand the contextual interference effect, in two experiments we investigated a form of practice schedule that provided novices with systematic increases in contextual interference. This new type of practice schedule was compared with traditional blocked and random scheduling for two types of sports skills. In Experiment 1, we tested the hypothesis that practising variations of the same task with systematic increases in contextual interference would lead to superior performance compared with blocked or random scheduling. Participants practised golf putting tasks following a blocked, random or increasing schedule, which involved initial blocked trials, followed by serial practice trials, and ended with random scheduling. Participants who followed the increasing schedule had superior retention test performance. In Experiment 2, we tested if these learning benefits were observed when learning tasks controlled by different generalized motor programs. Participants practised three different basketball passes (chest, overhead, single arm) in a blocked, random or increasing schedule. Participants practising with gradual increases in contextual interference performed better on retention and transfer tests than participants practising with blocked or random scheduling. The results of these two experiments indicate that a practice schedule offering systematic increases in contextual interference facilitates skill learning.  相似文献   

‘What about the community impact?’: The Corpus Christi ‘hook’     

Emily S. Sparvero  Stacy Warner 《Sport Management Review》2013,16(4):524-532

This case study draws on theory in the following areas (1) public financing of sport facilities and in particular, the method of bonds and the impact on and involvement of local taxpayers, (2) community impact of minor league sport teams, and (3) leveraging of sport teams and facilities. This case is centered on Justin Drew, the president of the Corpus Christi Hooks, who must work with city officials to ensure that his minor league baseball team does not lose local support. The city of Corpus Christi helped finance the Hooks’ stadium a few years prior, and now with new members on City Council, tough economic times, and a history of folded professional sports teams in the city, Drew must be proactive in seeing that the Hooks do not meet a similar fate.The case presents a common challenge confronted by communities that host professional sport teams. In many cases, cities must provide some level of public financing for sport facilities in order to attract or retain a team. To gain public support, various promises are made about the potential for the team to transform the community. However, once public funding is secured and a team and facility is in place, it is unclear who has the responsibility for delivering on these promises. The situation presented in this case is not unique. In fact, similar claims are made about the impact of a sports team, regardless of the size of the host community or the type of team. This case gives students the opportunity to measure impact and also think critically about how to leverage a sports team to create value for the community. Although the characters in the case are fictitious the case draws upon actual facts and data from public records regarding Corpus Christi and their minor league baseball team, the Hooks; thus, providing students with a realistic dilemma to consider. The case is intended for use in Sport Finance/Economics and Sport Policy courses, but could also be adapted for other courses such as Sport Marketing, Sport Communication, Facilities and Event Management or even Research Methods.  相似文献   

Hierarchical Mentoring: A Transformative Strategy for Improving Diversity and Retention in Undergraduate STEM Disciplines     

Zakiya S. Wilson  Lakenya Holmes  Karin deGravelles  Monica R. Sylvain  Lisa Batiste  Misty Johnson  Saundra Y. McGuire  Su Seng Pang  Isiah M. Warner 《Journal of Science Education and Technology》2012,21(1):148-156

In the United States, less than half of the students who enter into science, technology, engineering, and mathematics (STEM) undergraduate curricula as freshmen will actually graduate with a STEM degree. There is even greater disparity in the national STEM graduation rates of students from underrepresented groups with approximately three-fourths of minority students leaving STEM disciplines at the undergraduate level. A host of programs have been designed and implemented to model best practices in retaining students in STEM disciplines. The Howard Hughes Medical Institute (HHMI) Professors Program at Louisiana State University, under leadership of HHMI Professor Isiah M. Warner, represents one of these programs and reports on a mentoring model that addresses the key factors that impact STEM student attrition at the undergraduate level. By integrating mentoring and strategic academic interventions into a structured research program, an innovative model has been developed to guide STEM undergraduate majors in adopting the metacognitive strategies that allow them to excel in their programs of study, as they learn to appreciate and understand science more completely. Comparisons of the persistence of participants and nonparticipants in STEM curricular, at the host university and with other national universities and colleges, show the impact of the model’s salient features on improving STEM retention through graduation for all students, particularly those from underrepresented groups.  相似文献   

The digital course training workshop for online learning and teaching     

Jared Keengwe  David Georgina 《Education and Information Technologies》2012,17(4):365-379

A primary concern with Information Technology (IT) training has been that IT-based training focuses upon the technical or point and click aspects of learning management system (LMS) platforms and pedagogy-enhancing software without any concern for the content of the courses. The Digital Course Training Workshop (DCTW) approach examined in this article addresses this concern by supporting a content-first approach. The DCTW approach—an initiative at a Midwestern University—is aimed at supporting faculty through the process of transitioning from face-to-face (F2F) courses to online teaching. Participating faculty enter the week-long seminar with traditional course content and leave with digital content transitioned into the appropriate LMS platform. This article is intended to stimulate reflections on the need for systematic faculty professional development programs and activities to help higher education faculty in the transition process from traditional to online courses.  相似文献   

Is It Good to Share? An Effectiveness Study of the Indiana Share Program     

Jared Harmon 《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(5):254-268

This article reports the results of an effectiveness study conducted on the Indiana Share Program, a collective interlibrary loan borrowing program managed by the Indiana State Library. A subset of interlibrary loan departments in Indiana was surveyed regarding satisfaction with the interlibrary loan process. Filled request and turnaround time statistics for the year 2010 were also collected. These were compared with the same survey and statistics gathered from the Share Program group. The study found that Share fared well in the statistics. The survey answers were also very similar, showing no statistically significant difference.  相似文献   

The diamond rock drill     

John Warner 《Journal of The Franklin Institute》1872,93(5):314-316

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Practical remarks on the saturation of marine boilers     

James H. Warner 《Journal of The Franklin Institute》1857,63(5):315-319

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