The treatment of uncertainty in the sciences     

Dennis H. Rouvray B.Sc.  ARCS  Ph.D.  DIC 《Endeavour》1997,21(4):154-158

For some 300 years the modelling of uncertainty in the sciences has been totally dominated by probabilistic methods. Now, following major criticism of the theoretical foundations of probability theory, other approaches to dealing with uncertainty are being explored.  相似文献   

From learning to labour to learning for marginality: school segregation and marginalization in Swedish suburbs     

Dennis Beach  Ove Sernhede 《British Journal of Sociology of Education》2011,32(2):257-274

In this article, using data from ethnographic research, we try to present some glimpses of the way education is described as an experience and possibility ‘from below’, by pupils who grow up and study in schools in the most segregated and territorially stigmatized suburbs on the outskirts of our major cities. What we feel they describe is an experience of schooling for surviving the social and economic consequences of curtailed citizenship in a post‐industrial society rather than one of schooling that offers possibilities of integration and full citizenship or social transformation. Our findings have significant policy implications in this respect. Sweden has historically pursued projects aimed at educational inclusion but has recently taken a significant turn toward neo‐liberalism and educational consumerism, since which time various disadvantaged groups have become increasingly concentrated compared with others in under‐achieving schools in an economically threatened public sector. The article discusses some aspects and possible consequences of this development.  相似文献   

Whole-body vibration effects on the muscle activity of upper and lower body muscles during the baseball swing in recreational baseball hitters     

Reyes GF  Dickin DC  Crusat NJ  Dolny DG 《Sports biomechanics / International Society of Biomechanics in Sports》2011,10(4):280-293

The purpose of this study was to evaluate the effects of whole-body vibration (WBV) on the muscle recruitment of selected upper and lower body muscles during the baseball swing. Participants were recreationally trained males (n = 16, 22 +/- 2 years, 181.4 +/- 7.4 cm, 84.7 +/- 9.0 kg), with previous baseball experience. Subjects participated in three randomized sessions on separate days, consisting of three sets of five swings offa hitting tee. Exercises (upper and lower body dynamic and static movements) with or without WBVexposure were performed between swing sets. During each swing, the gastrocnemius, biceps femoris, gluteus maximus, pectoralis major, latissimus dorsi, and triceps brachii were evaluated for electromyographic (EMG) activity. EMG values were normalized to EMG measured during maximal voluntary isometric contraction. Statistical analysis revealed no significant differences in EMG activity across the three treatments. In addition, the results displayed a specific muscle recruitment order during the swing, starting with the lower body followed by the upper body muscles. This study was the first to report the recruitment order during the baseball swing. Although acute exposure to WBV did not significantly alter the muscle recruitment, these results may prove useful for practitioners looking to enhance baseball swing performance.  相似文献   

Perspective Paper: Assessing Air Quality as Part of a Physical Therapy Plan of Care     

Dennis C. Sobush  Monika Burrescia 《Cardiopulmonary Physical Therapy Journal》2011,22(1):20-24

Purpose: The purposes of this clinical perspective paper are (1) to expand physical therapists’ awareness to the topic of air quality as a health priority when providing professional services; and (2) to provide templates for screening the indoor clinical environments and patient profiles to avert respiratory exacerbations, especially in persons with asthma. Summary of Key Points: The location where a physical therapist practices determines the air quality indices to which a person is exposed. Poor indoor air quality can expose a person to even greater compromise of respiration (ie, Sick Building Syndrome) than outdoor air quality secondary to an array of factors like building materials, the ventilation exchange rate of an enclosed space, chemicals used in cleaning, and humidity. Statement of Conclusions: Extrinsic (ie, environmental) and intrinsic (eg, pre-disposition to airway hypersensitivity) factors must be accounted for by physical therapists to safeguard their patients and themselves from experiencing respiratory compromise and/or distress as a result of a treatment session or their place of employment. Recommendations: Efforts to screen indoor environments for potential triggers and patient risk profiles for abnormal airway reactivity should routinely be undertaken. Individualized Action Plans should be prospectively prepared and readied for implementation when warranted.Key Words: asthma, Sick Building Syndrome, indoor air quality, respiratory impairment  相似文献   

Coaching competency and satisfaction with the coach: a multi-level structural equation model     

Myers ND  Beauchamp MR  Chase MA 《Journal of sports sciences》2011,29(4):411-422

The purpose of this initial predictive validity study was to determine the ability of measures derived from the Athletes' Perceptions of Coaching Competency Scale II?-?High School Teams (APCCS II-HST) to predict satisfaction with the head coach. Specification of the statistical model was informed by the mediational model of coach-athlete interactions. The technical quality of the satisfaction measure was evaluated before testing the predictive validity of the coaching competency measures. Data were collected from athletes of seven sports. Athlete observations (N?=?748) were clustered within teams (G?=?74). Multi-group confirmatory factor analyses (CFA) provided evidence for factorial invariance of a reduced version of the satisfaction measure by athlete gender. Multi-level CFA provided evidence of model-data consistency for a reduced version of the satisfaction measure. Multi-level structural equation modelling provided evidence for the ability of latent coaching competency to positively predict latent satisfaction at both the athlete level (technique competency and motivation competency) and the team level (coaching competency) and for close model-data fit. Implications of this study include: that the APCCS II-HST should be viewed as a replacement for the Coaching Competency Scale when the intended population is appropriate; a preliminary multi-level measurement model for satisfaction with one's coach that should be considered as a potential starting point in subsequent studies; and empirical support for a key relationship proposed in the mediational model of coach-athlete interactions.  相似文献   

Assessing and Addressing Student Barriers: Implications for Today's College Classroom          下载免费PDF全文

Dorothy A. Osterholt  Sophie Lampard Dennis 《About Campus》2014,18(6):18-24

The increasingly diverse set of learners in colleges and universities poses considerable challenges for educators. Dorothy A. Osterholt and Sophie Lampard Dennis explain the four domains of learning they have identified and suggest ways to apply them to help students overcome a variety of obstacles to learning.  相似文献   

Structural and conceptual interweaving of mathematics methods coursework and field practica     

Damon L. Bahr  Eula Ewing Monroe  Dennis Eggett 《Journal of Mathematics Teacher Education》2014,17(3):271-297

This paper describes a study of observed relationships between the design of a preservice elementary mathematics methods course with accompanying field practicum and changes in the extent to which participating prospective teachers identified themselves with the mathematics reform movement after becoming practicing teachers. The curriculum of the course with its embedded field practicum experiences was designed to support prospective teachers in interweaving methods coursework and pedagogical instruction with classroom practice. University and elementary school structures were interwoven by conducting weekly mathematics methods course sessions at a school site followed immediately by related practicum experiences in classrooms in the school. The interweaving of conceptualizations about mathematics teaching and learning was facilitated as the methods instructor provided professional development for classroom teachers simultaneously with the methods course, encouraging the teachers to create “reform-friendly” classroom environments. Survey data from 68 prospective teachers involved in the project were analyzed to identify and describe relationships between course/practicum experiences and the degree to which they as practicing teachers, 1–3 years following the course/practicum, identified with a reform mathematics perspective, as well as to examine factors influencing those relationships.  相似文献   

No Laughing Matter: Values,Perception, and the Demise of AIDS Jokes     

Dennis Hall 《Journal of American culture (Malden, Mass. : 2003)》1993,16(2):25-30

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Retirement preparation programs: Issues in planning and selection     

Helen Dennis 《Journal of Career Development》1986,13(2):30-38

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Research results of the National Day Care Study : By Jeffrey Travers and Barbara D. Goodson (with others). Cambridge,MA: Abt books, 1980. Pp. 256. No price listed (paper).     

Dennis R. Young 《Economics of Education Review》1982,2(3):301-303

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