The development of science teachers' knowledge on models and modelling: promoting,characterizing, and understanding the process     

Rosária Justi  Jan van Driel 《International Journal of Science Education》2013,35(5):549-573

Models play an important role in science education. However, previous research has revealed that science teachers' content knowledge, curricular knowledge, and pedagogical content knowledge about models and modelling are often incomplete or inadequate. A research project was conducted that aimed at promoting and gaining an understanding of the development of beginning science teachers' knowledge in this area. The teachers, who were enrolled in a teacher's training programme, participated in a special course on models and modelling, and conducted a research project in their classes about this theme. The data gathered in this project support the discussion to the extent that both the activities of the course and the conducting of and reflection on their research projects contributed to the development of teachers' knowledge. From the results, we propose some guidelines for educational researchers interested in this area.  相似文献   

Heart rate and perceived muscle pain responses to a functional walking test in McArdle disease     

John P. Buckley  Ros M. Quinlivan  Julius Sim  Roger G. Eston  Deborah S. Short 《Journal of sports sciences》2013,31(16):1561-1569

Abstract

The aim of this study was to assess a 12-min self-paced walking test in patients with McArdle disease. Twenty patients (44.7 ±11 years; 11 female) performed the walking test where walking speed, distance walked, heart rate (HR) and perceived muscle pain (Borg CR10 scale) were measured. Median (interquartile range) distance walked was 890 m (470–935). From 1 to 6 min, median walking speed decreased (from 75.0 to 71.4 m?min^–1) while muscle pain and %HR reserve increased (from 0.3 to 3.0 and 37% to 48%, respectively). From 7 to 12 min, walking speed increased to 74.2 m?min^–1, muscle pain decreased to 1.6 and %HR reserve remained between 45% and 48%. To make relative comparisons, HR and muscle pain were divided by walking speed and expressed as ratios. These ratios rose significantly between 1 and 6 min (HR:walking speed P = .001 and pain:walking speed P < .001) and similarly decreased between 6 and 11 min (P = .002 and P = .001, respectively). Peak ratios of HR:walking speed and pain:walking speed were inversely correlated to distance walked: r_s (HR) = ?.82 (P < .0001) and r_s (pain) = ?.55 (P = .012). Largest peak ratios were found in patients who walked < 650 m. A 12-min walking test can be used to assess exercise capacity and detect the second wind in McArdle disease.  相似文献   

The impact of impairment on kinematic and kinetic variables in Va’a paddling: Towards a sport-specific evidence-based classification system for Para Va’a     

Johanna S. Rosén  Anton Arndt  Victoria L. Goosey-Tolfrey  Barry S. Mason  Michael J. Hutchinson  Olga Tarassova 《Journal of sports sciences》2013,31(17):1942-1950

ABSTRACT

Para Va’a is a new Paralympic sport in which athletes with trunk and/or leg impairment compete over 200 m. The purpose of this study was to examine the impact of impairment on kinematic and kinetic variables during Va’a ergometer paddling. Ten able-bodied and 44 Para Va’a athletes with impairments affecting: trunk and legs (TL), legs bilaterally (BL) or leg unilaterally (UL) participated. Differences in stroke frequency, mean paddling force, and joint angles and correlation of the joint angles with paddling force were examined. Able-bodied demonstrated significantly greater paddling force as well as knee and ankle flexion ranges of movement (ROM) on the top hand paddling side compared to TL, BL and UL. Able-bodied, BL and UL demonstrated greater paddling force and trunk flexion compared to TL, and UL demonstrated larger bottom hand paddling side knee and ankle flexion ROM compared to BL. Significant positive correlations were observed for both male and female athletes between paddling force and all trunk flexion angles and ROM in the trunk and pelvis rotation and bottom hand paddling side hip, knee and ankle flexion. The results of this study are important for creating an evidence-based classification system for Para Va’a.  相似文献   

Understanding the validity of data: a knowledge-based network underlying research expertise in scientific disciplines     

Ros Roberts 《Higher Education》2016,71(5):651-666

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Supporting students for success in online and distance education (Third edition)     

Ros Morpeth 《Open Learning》2013,28(3):258-260

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Playing outdoors,spaces and places,risk and challenge     

Ros Garrick 《Early Years: An International Journal of Research and Development》2010,30(3):283-285

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Editorial Developing readers     

Ros Fisher  Morag Stuart 《Journal of Research in Reading》2004,27(4):339-341

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Motivational profiles as a combination of academic goals in higher education     

Antonio Valle  José Carlos Núñez  Ramón G. Cabanach  Susana Rodríguez  Pedro Rosário  Cándido J. Inglés 《教育心理学》2015,35(5):634-650

The aim of the current study was to obtain information from students in higher education on different motivational profiles that resulted from the combination of three academic goals (i.e. learning goals (LG), performance-approach goals and performance-avoidance goals). Moreover, information related to the relevance of each goal within each motivational profile was explored to explain conditions closely related to the academic engagement. The sample consisted of 2556 students from five Spanish universities. Motivational profiles were obtained by using cluster analysis followed by a relevance analysis of each goal within each motivational profile. The results support the hypothesis concerning motivational profiles, and further suggest for motivational profiles with a predominance of LG to be more adaptive. According to our findings, high level of LG in one’s motivational profile appear to be a powerful protective factor in maintaining high interest in academic work, as well as high control beliefs and self-efficacy.  相似文献   

Personal, Political, Theoretical: Learning Journals and Education     

Ros King 《English in Education》2002,36(3):20-27

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Supporting optimal child development through Early Head Start and Head Start Programs: Secondary data analyses of FACES and EHSREP: An introduction     

T’Pring R. Westbrook 《Early childhood research quarterly》2012

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