The force-time profile of elite front crawl swimmers

In this study, we used recently developed technology to determine the force-time profile of elite swimmers, which enabled coaches to make informed decisions on technique modifications. Eight elite male swimmers with a FINA (Federation Internationale de Natation) rank of 900+ completed five passive (streamline tow) and five net force (arms and leg swimming) trials. Three 50-Hz cameras were used to video each trial and were synchronized to the kinetic data output from a force-platform, upon which a motorized towing device was mounted. Passive and net force trials were completed at the participant's maximal front crawl swimming velocity. For the constant tow velocity, the net force profile was presented as a force-time graph, and the limitation of a constant velocity assumption was acknowledged. This allowed minimum and maximum net forces and arm symmetry to be identified. At a mean velocity of 1.92+0.06 m s?1, the mean passive drag for the swimmers was 80.3+4.0 N, and the mean net force was 262.4+33.4 N. The mean location in the stroke cycle for minimum and maximum net force production was at 45% (insweep phase) and 75% (upsweep phase) of the stroke, respectively. This force-time profile also identified any stroke asymmetry.     

Reading information about a scientific phenomenon on webpages varying for reliability: an eye-movement analysis

Students search the Web frequently for many purposes, one of which is to search information for academic assignments. Given the huge amount of easily accessible online information, they are required to develop new reading skills and become more able to effectively evaluate the reliability of web sources. This study investigates the distribution of their visual attention while reading webpages using eye-tracking methodology. The aim was to examine whether information received differential attention depending on the reliability of the source and whether the individual characteristics of topic-specific prior knowledge and epistemic beliefs moderated their visual behavior during reading. Factual knowledge after reading was also examined. Forty-nine university students read four webpages providing verbal and graphical information about the universal validity of the central dogma of molecular biology, which varied for reliability. Indices of first-pass and second-pass reading or inspection were used to trace the processing of information within each page. Findings revealed that readers made an implicit source evaluation as they spent a longer time inspecting the pictures about the more and less familiar information within the most reliable source during the immediate, more automatic, processing. In addition, topic-specific epistemic beliefs moderated this processing as readers with more availing convictions about knowledge attended more the information provided in pages that required more discernment. Moreover, readers increased their factual knowledge of the topic after reading. Educational implications are outlined.     

International perspectives on student awareness,experiences and perceptions of research: implications for academic developers in implementing research‐based teaching and learning

This paper explores the implications of the effective integration of research, teaching and learning for academic development through the lens of an international multi‐institutional comparison of student perceptions of research and its impact on their learning environment. The study, with a sample of over 500 final‐year undergraduate students across three institutions in the UK and Canada, represents a spectrum of research and teaching intensive universities and is one of the largest exploring undergraduate student perceptions of research in the linking teaching and research literature. The results indicate a complex relationship between student perceptions and experiences of research and the type of institution, as well as the individual, institutional and national context. They also inform the discussion of particular issues that academic developers face and the strategies they use to improve the integration of research and teaching to benefit the undergraduate learning experience in their institution.

Cet article explore les implications, pour le développement pédagogique, de l’intégration effective de la recherche, de l’enseignement et de l’apprentissage à l’aide de la lentille d’une comparaison internationale multi institutionnelle des perceptions étudiantes à l’égard de la recherche et de leur impact sur l’environnement d’apprentissage. L’étude, reposant sur un échantillon de plus de 500 étudiants en dernière année de 1^er cycle, provenant de trois institutions au Royaume‐Uni et au Canada, représente un spectre d’universités centrées sur l’enseignement ou sur la recherche. L’étude constitue une des recherches les plus importantes au sujet des perceptions étudiantes à l’égard de la recherche dans la littérature portant sur le lien entre l’enseignement et la recherche. Les résultats indiquent une relation complexe entre les perceptions et les expériences des étudiants, et le type d’institution, de même qu’avec les contextes individuel, institutionnel et national. Les résultats contribuent aussi à la discussion de questions particulières auxquelles les conseillers pédagogiques font face ainsi que les stratégies que ceux‐ci utilisent en vue d’améliorer l’intégration de la recherche et de l’enseignement de façon à en faire bénéficier l’expérience d’apprentissage au 1^er cycle au sein de leur institution.     

Assessing mentoring in organizations: an evaluation of commercial mentoring instruments

The purpose of this article is to inform readers about the types of instruments available for assessing and improving mentoring in organizations. Extensive review of the psychological, business and medical literature was conducted to identify commercially published, practitioner‐oriented instruments. All of the instruments that were identified – including the Alleman mentoring activities questionnaire, Mentoring in the moment, Mentoring skills assessment, and Principles of adult mentoring scale – are evaluated herein. Each instrument’s target audience, raters, subscales, response options, psychometric properties, and relative strengths and weaknesses are described. Although these instruments are reported to be used extensively, evidence of their validity is not always available. This review presents information that, in combination with first‐hand inspection of the instruments, should enable practitioners to differentiate between instruments that may be a fit for their needs from those that are not. Furthermore, it may introduce academic readers to instruments that are not covered in the scholarly literature in spite of their common use for non‐research purposes.     

Grouping Students for Elementary School Mathematics: A Survey of Principals in 12 States

ABSTRACT

In this study I explored how elementary school students are initially assigned to homeroom classrooms (criteria used and heterogeneous vs. homogeneous grouping), subsequently assigned to mathematics classes (e.g., self‐contained, regrouped, departmentalized), and grouped for mathematics instruction within classes (e.g., whole‐class, two groups, individualized). This three‐dimensional typology of school and classroom organization was used to survey 571 elementary school principals from 12 states. Results showed that students were generally assigned to heterogeneous self‐contained homeroom classes, that they remained in these same classes for mathematics, and that mathematics was usually taught to entire classes (whole class). Within‐class ability grouping, within‐grade regrouping, and departmentalized plans were used increasingly for mathematics at the intermediate grades, but across‐grade or Joplin Plan programs were infrequent.     

Direct Behavioral Consultation in Head Start to Increase Teacher Use of Praise and Effective Instruction Delivery

Chronic disruptive behaviors during early childhood are associated with many poor developmental outcomes including, but not limited to, school dropout and conduct disorder during adolescence. Much is known regarding effective intervention procedures for disruptive classroom behaviors by preschool children. Unfortunately, evidence-based intervention procedures may not be implemented with integrity in applied settings. Direct behavioral consultation may increase teacher intervention integrity because of direct training procedures used with teachers and students during routine classroom activities. This study evaluated a nondisruptive direct training method for increasing Head Start teachers' use of praise and effective instruction delivery. Results indicated that the direct training procedure implemented during routine instructional activities resulted in increased use of praise and effective instruction delivery that maintained following training. Additionally, increased use of praise and effective instruction delivery resulted in reductions in children's disruptive classroom behavior.     

亲爱的父亲们,节日快乐!

Hi Brad, The Father's Day is coming.I am always too shy to express my feeling to my father as he,in my eyes,is so serious.Maybe his action has said all for him,and there's so little left to the words.Brad,do you also prefer to have actions instead of words to say everything for you? Please tell me more about your story of being a father.     

你好,夏威夷!

半年不见的Brad又回来了!喜欢旅行和爱好广泛的他,似乎永远都会为我们带来不同的精彩故事和见闻。那让我们依旧跟随他的文字和图片,穿越空间上的距离,一同享受那游走在世界的美丽心情!     

面对不喜欢的团队活动

不少单位和集体都会组织一些团队建设活动,以增强同事间的了解和公司的凝聚力,这些活动常常也是一个职场新人融入新团队的最好时机之一。但是有时候你并不想参加这样的活动,心里会暗自盘算着去还是不去的利弊,那正好来听听有着丰富职场经验的Brad的忠实建议。