Growth influences biomechanical profile of talented swimmers during the summer break     

Marc F. Moreira  Jorge E. Morais  Daniel A. Marinho  António J. Silva  Tiago M. Barbosa 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(1):62-74

This study aimed to analyse the effect of growth during a summer break on biomechanical profile of talented swimmers. Twenty-five young swimmers (12 boys and 13 girls) undertook several anthropometric and biomechanical tests at the end of the 2011–2012 season (pre-test) and 10 weeks later at the beginning of the 2012–2013 season (post-test). Height, arm span, hand surface area, and foot surface area were collected as anthropometric parameters, while stroke frequency, stroke length, stroke index, propelling efficiency, active drag, and active drag coefficient were considered as biomechanical variables. The mean swimming velocity during an all-out 25 m front crawl effort was used as the performance outcome. After the 10-week break, the swimmers were taller with an increased arm span, hand, and foot areas. Increases in stroke length, stroke index, propelling efficiency, and performance were also observed. Conversely, the stroke frequency, active drag, and drag coefficient remained unchanged. When controlling the effect of growth, no significant variation was determined on the biomechanical variables. The performance presented high associations with biomechanical and anthropometric parameters at pre-test and post-test, respectively. The results show that young talented swimmers still present biomechanical improvements after a 10-week break, which are mainly explained by their normal growth.  相似文献   

Parent and Teacher Perceptions of Individualised Transition Planning     

Georgette Goupil  Marc J. Tassé  Nathalie Garcin  & Catherine Doré 《British Journal of Special Education》2002,29(3):127-135

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Possible Lives: The Promise of Public Education by Mike Rose     

Marc Cutright 《Interchange》1997,28(1):83-85

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āwhina: a programme for Māori and Pacific tertiary science graduate and postgraduate success     

Marc Wilson  Maree Hunt  Liz Richardson  Hazel Phillips  Ken Richardson  Danna Challies 《Higher Education》2011,62(6):699-719

In New Zealand, Māori (indigenous New Zealanders) and Pacific students tend not to attain the same levels of educational success as Pākehā (New Zealanders of European descent). Addressing this problem is a particular challenge in the sciences. The kaupapa (values-base) of Te Rōpū Āwhina (Āwhina) is to produce Māori and Pacific professionals to contribute to Māori and Pacific development and leadership through the creation of an inclusive off- and on-campus whānau (extended family) environment where high expectations, aspirations and achievement, collective success, and reciprocity are normalised. This paper reviews theories and practices of recruitment and retention relevant to Māori and Pacific students at tertiary level, presents the rationale for Āwhina in the Faculties of Science and Architecture and Design at Victoria University of Wellington, and assesses the impact of the whānau. Based on analyses of quantitative measures of student achievement, and biennial surveys of student responses from the first 6 years of Āwhina, it is suggested that the results are consistent with improving Māori and Pacific graduate and postgraduate achievement and retention. Potential implications for efforts to reduce disparities in tertiary education in New Zealand and elsewhere are summarised.  相似文献   

Software product evolution for Intellectual Capital Management: The case of Meta4 PeopleNet     

Ricardo Colomo-PalaciosAuthor VitaeEduardo FernandesAuthor Vitae  Pedro Soto-AcostaAuthor Vitae  Marc Sabbagh^{Author Vitae} 《International Journal of Information Management》2011,31(4):395-399

Software must evolve in order to adapt to new demands and scenarios. In the case of packaged software that can be customized, this evolution implies the maintenance of both out-of-the-box and customized functionality alike. New user interface technologies provide a way to interact with applications that software vendors are forced to incorporate in order to meet new user and market requirements. Packaged software vendors are facing software evolution processes in order to attract more customers and conserve the existing ones. This case analysis describes the evolution of packaged software, Meta4 PeopleNet, towards the addiction of Rich Internet Applications features to a Human and Intellectual Capital Management tool. The findings and lessons learned presented in this case study provide useful insights for packaged software vendors facing software product evolution.  相似文献   

The application of archival concepts to a data-intensive environment: working with scientists to understand data management and preservation needs     

Dharma Akmon  Ann Zimmerman  Morgan Daniels  Margaret Hedstrom 《Archival Science》2011,11(3-4):329-348

The collection, organization, and long-term preservation of resources are the raison d??être of archives and archivists. The archival community, however, has largely neglected science data, assuming they were outside the bounds of their professional concerns. Scientists, on the other hand, increasingly recognize that they lack the skills and expertise needed to meet the demands being placed on them with regard to data curation and are seeking the help of ??data archivists?? and ??data curators.?? This represents a significant opportunity for archivists and archival scholars but one that can only be realized if they better understand the scientific context.  相似文献   

Bandpass sorting of heterogeneous cells using a single surface acoustic wave transducer pair     

Gergely Simon  Caroline Busch  Marco A. B. Andrade  Julien Reboud  Jonathan M. Cooper  Marc P. Y. Desmulliez  Mathis O. Riehle  Anne L. Bernassau 《Biomicrofluidics》2021,15(1)

Separation and sorting of biological entities (viruses, bacteria, and cells) is a critical step in any microfluidic lab-on-a-chip device. Acoustofluidics platforms have demonstrated their ability to use physical characteristics of cells to perform label-free separation. Bandpass-type sorting methods of medium-sized entities from a mixture have been presented using acoustic techniques; however, they require multiple transducers, lack support for various target populations, can be sensitive to flow variations, or have not been verified for continuous flow sorting of biological cells. To our knowledge, this paper presents the first acoustic bandpass method that overcomes all these limitations and presents an inherently reconfigurable technique with a single transducer pair for stable continuous flow sorting of blood cells. The sorting method is first demonstrated for polystyrene particles of sizes 6, 10, and 14.5 μm in diameter with measured purity and efficiency coefficients above 75 ± 6% and 85 ± 9%, respectively. The sorting strategy was further validated in the separation of red blood cells from white blood cells and 1 μm polystyrene particles with 78 ± 8% efficiency and 74 ± 6% purity, respectively, at a flow rate of at least 1 μl/min, enabling to process finger prick blood samples within minutes.  相似文献   

An evolving Learning Management System for new educational environments using 2.0 tools     

Miguel Á. Conde  Francisco J. García-Peñalvo  María J. Rodríguez-Conde  Marc Alier  María J. Casany  Jordi Piguillem 《Interactive Learning Environments》2014,22(2):188-204

The tools used in learning processes are in a continuous state of flux. One of the most significant changes is the application of Information and Communications technologies (ICTs) to educational contexts. This provides new possible ways to carry out learning activities, new learning services, the possibility to use new kinds of contents and activities, etc. However, ICTs have not provided as many advantages as they were supposed to, so changes are necessary. In this context, a new set of tools, Web 2.0, offers a new way to understand the Web, in which the user is the centre. Further, users can cooperate in order to define contents. This concept is also applied in technology-mediated learning but there are important problems when one tries to integrate such tools and concepts with existing systems. This paper explores the integration of these tools in traditional learning environments, the various possibilities and their advantages and drawbacks. After that, an interoperability scenario is described and two experiences are presented to show how 2.0 tools can be integrated in learning activities, and its effect in educational process.  相似文献   

Exploring the validity of assessment in anatomy: Do images influence cognitive processes used in answering extended matching questions?          下载免费PDF全文

Marc A.T.M. Vorstenbosch  Shifra T. Bouter  Marianne M. van den Hurk  Jan G.M. Kooloos  Sanneke M. Bolhuis  Roland F.J.M. Laan 《Anatomical sciences education》2014,7(2):107-116

Assessment is an important aspect of medical education because it tests students' competence and motivates them to study. Various assessment methods, with and without images, are used in the study of anatomy. In this study, we investigated the use of extended matching questions (EMQs). To gain insight into the influence of images on the validity of test items, we focused on students' cognitive processes while they answered questions with and without images. Seventeen first‐year medical students answered EMQs about gross anatomy, combined with either labeled images or answer lists, while thinking aloud. The participants' verbal reports were transcribed verbatim and then coded. Initial codes were based on a task analysis and were adapted into final codes during the coding process. Results showed that students used more cues from EMQs with images and visualized more often in EMQs with answer lists. Ready knowledge and verbal reasoning were used equally often in both conditions. In conclusion, EMQs with and without images elicit different results in this think aloud experiment, indicating different cognitive processes. They seem to measure different skills, making them valid for different testing purposes. The take‐home message for anatomy teachers is that questions without images seem to test the quality of students' mental images while questions with images test their ability to interpret visual information. It makes sense to use both response formats in tests. Using images from clinical practice instead of anatomical drawings will help to improve test validity. Anat Sci Educ 7: 107–116. © 2013 American Association of Anatomists.  相似文献   

New insights into Jin and post-Jin polychromy and refurbishment practices: A multi-disciplinary,multi-analytical approach     

John Twilley  Kathleen M. Garland  Marc F. Wilson 《文物保护研究》2014,59(5):S165-S168

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