An Annotated Guide to Multicultural Education     

Mary Cervantes Clarkson 《Teaching Education》2013,24(1):193-205

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The Effects of a Model-Based Physics Curriculum Program with a Physics First Approach: a Causal-Comparative Study   总被引：2，自引：2，他引：0  

Ling L. Liang  Gavin W. Fulmer  David M. Majerich  Richard Clevenstine  Raymond Howanski 《Journal of Science Education and Technology》2012,21(1):114-124

The purpose of this study is to examine the effects of a model-based introductory physics curriculum on conceptual learning in a Physics First (PF) Initiative. This is the first comparative study in physics education that applies the Rasch modeling approach to examine the effects of a model-based curriculum program combined with PF in the United States. Five teachers and 301 students (in grades 9 through 12) in two mid-Atlantic high schools participated in the study. The students’ conceptual learning was measured by the Force Concept Inventory (FCI). It was found that the ninth-graders enrolled in the model-based program in a PF initiative achieved substantially greater conceptual understanding of the physics content than those 11th-/12th-graders enrolled in the conventional non-modeling, non-PF program (Honors strand). For the 11th-/12th-graders enrolled in the non-PF, non-honors strands, the modeling classes also outperformed the conventional non-modeling classes. The instructional activity reports by students indicated that the model-based approach was generally implemented in modeling classrooms. A closer examination of the field notes and the classroom observation profiles revealed that the greatest inconsistencies in model-based teaching practices observed were related to classroom interactions or discourse. Implications and recommendations for future studies are also discussed.  相似文献   

Isometric Knee Extension and Plantar Flexion Muscle Fatigue and Fiber Type Composition in Female Distance Runners     

Walter Kroll  Priscilla M. Clarkson  Anthony M. Melchionda  Anthony Wilcox 《Research quarterly for exercise and sport》2013,84(2):200-207

Abstract

Plantar flexion and knee extension fatigue patterns elicited by 25 serial isometric contractions were assessed on eight female distance runners. Fiber type composition of the vastus lateralis and gastrocnemius muscles was examined by a needle biopsy technique. Two different isometric exercise regimens were administered: 10-sec contractions separated by 5-sec intertrial rest (10:5) designed to elicit a rapid rate of fatigue, and 10-sec contractions separated by 20-sec intertrial rest (10:20) designed to induce less fatigue. No fatigue pattern was found for the 10:20 regimen which was consistent with previous data on male distance runners but unlike male power athletes who did exhibit significant fatigue. Significant fatigue decrements were found for the 10:5 knee extension (55.7%) and plantar flexion (75.8%) conditions. Fiber type composition and fatigue decrements did not correlate. Knee extension and plantar flexion maximum strength correlated significantly with the amount of fatigue induced with r's of .82 and .83, respectively. For each separate muscle group, maximum isometric strength was a better predictor of fatigability than fiber type composition. Even though differences in maximal strength and muscle mass existed between knee extension and plantar flexion muscle groups, elicited fatigue curves were similar in pattern differing only in absolute level. High versus low strength classification analysis showed similar knee extension but dissimilar plantar flexion fatigue patterns. Results suggest that the role of fiber type composition, muscle mass, and maximum strength level as they influence local muscular fatigue patterns must be elucidated for each muscle group separately.  相似文献   

A Study of Three Movements in Classical Ballet     

Priscilla M. Clarkson  Theresa E. Kennedy  Jeanne Flanagan 《Research quarterly for exercise and sport》2013,84(2):175-179

Abstract

The purpose of this study was to determine the frequency and magnitude of specific variables perceived to have affected U.S. Olympic athlete performance. Participants included 296 Atlanta Olympians and 83 Nagano Olympians. Olympians rated how they perceived specific variables influenced their Olympic performance. Results revealed that numerous variables, including performance influences, such as preparation for distractions and loss of composure; team variables, such as strong cohesion and positive coach-athlete relationships; coaching variables, including coach's ability to deal with crises and coaching expectations; family-friend variables, including general social support and getting event tickets for family and friends; and environmental concerns, such as venue transportation difficulties and Olympic village distractions; were perceived to influence performance. Findings verified the results of qualitative interviews conducted with Olympic athletes and coaches.  相似文献   

The Relationships Among Isokinetic Endurance,Initial Strength Level,and Fiber Type     

Priscilla M. Clarkson  James Johnson  Dennis Dextradeur  William Leszczynski  Jackson Wai  Anthony Melchionda 《Research quarterly for exercise and sport》2013,84(1):15-19

Abstract

Knee extension isokinetic peak torque was assessed at angular velocities of 0, 30, 180, and 240[ddot]/sec, and isokinetic endurance was assessed by 50 consecutive contractions at 180[ddot]/sec in eight college age men. Also, muscle fiber type of the vastus lateralis was determined and related to isokinetic strength and fatigability. To determine the influence of initial strength on isokinetic endurance the 50 serial isokinetic contractions were assessed after subjects performed two bicycle exercise regimens designed to affect initial strength levels. Neither isokinetic peak torques (made relative to MVC or per Kg of body weight) nor the amount of strength loss over the 50 contractions correlated with fiber type. The peak torques at 180[ddot]/sec at the start of the 50 contractions differed over the three conditions (unfatigued and after the two bicycle exercise regimens), however, the amount of of strength loss over the 50 trials was similar for the three conditions. Also, the patterns of the three isokinetic fatigue curves were remarkably similar. Thus, the initial strength level across the treatments did not affect the rate of fatigue. However, when the treatment conditions were examined separately, the amount of strength loss over the 50 trials correlated significantly with initial strength. Thus, factors other than, or in addition to, fiber type and initial strength level must influence the rate of isokinetic fatigue.  相似文献   

Static Strength Increase and Its Effect upon Triceps Surae Reflex Time     

J. Gavin Reid 《Research quarterly for exercise and sport》2013,84(4):691-697

Abstract

This study was to investigate the effect of increased muscle strength on the duration of the triceps surae reflex time. Subjects were 60 students within the age range of 18 to 20 years. The subjects were divided into two groups of equal size—a control and an experimental group. The experimental group performed isometric and isotonic plantar flexor muscle resistance exercises for 40 min. twice a week for a period of 6 weeks. The subjects were tested for plantar flexor static strength and triceps surae reflex time at approximately the same time of day prior to, and at the termination of, the training period. For the experimental group, the statistical analysis revealed a significant decrease in the triceps surae reflex time following strength training. The results of this study appear to warrant the conclusion that an increase in static strength through training has a significant shortening effect upon the triceps surae reflex time.  相似文献   

Applying a Force and Motion Learning Progression over an Extended Time Span using the Force Concept Inventory     

Gavin W. Fulmer  Ling L. Liang  Xiufeng Liu 《International Journal of Science Education》2013,35(17):2918-2936

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Neighborhoods Matter: The Role of Universities in the School Reform Neighborhood Development Movement     

Henry Louis Taylor Jr.  Linda McGlynn  D. Gavin Luter 《Peabody Journal of Education》2013,88(5):541-563

Where you find distressed neighborhoods, you will also find poorly performing public schools. Yet many contemporary school reform efforts ignore neighborhood-level factors that undeniably impact school performance. The purpose of this study is to use a case study approach with social institutional and urban school reform regime frameworks to demonstrate why school reform and the re-creation and redevelopment of distressed neighborhoods should occur simultaneously. At the same time, researchers will examine the role of higher education in catalyzing partnerships with so-called anchor institutions for the explicit purposes of simultaneously improving neighborhoods and reforming schools. By focusing on a federal Choice neighborhood initiative, the study will not only make the case for connecting school reform and neighborhood development but also present a model that demonstrates how this can happen. The study will also make a strong case for the university's unique role in fostering neo-collaborative structures fit to take on wicked problems of neighborhood distress and urban decline.  相似文献   

Product design engineering – a global education trend in multidisciplinary training for creative product design     

Ian de Vere  Gavin Melles  Ajay Kapoor 《European Journal of Engineering Education》2010,35(1):33-43

Product design is the convergence point for engineering and design thinking and practices. Until recently, product design has been taught either as a component of mechanical engineering or as a subject within design schools but increasingly there is global recognition of the need for greater synergies between industrial design and engineering training. Product design engineering (PDE) is a new interdisciplinary programme combining the strengths of the industrial design and engineering. This paper examines the emergence of PDE in an environment of critique of conventional engineering education and exemplifies the current spread of programmes endorsing a hybrid programme of design and engineering skills. The paper exemplifies PDE with the analysis of the programme offered at Swinburne University of Technology (Australia), showing how the teaching of ‘designerly’ thinking to engineers produces a new graduate particularly suited to the current and future environment of produce design practice. The paper concludes with reflections on the significance of this innovative curriculum model for the field of product design and for engineering design in general.  相似文献   

Fundamentals of oil-shale retorting     

M.J. Gavin  Leslie H. Sharp 《Journal of The Franklin Institute》1920,190(4):573-574

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