Agreement between Polar and SRM mobile ergometer systems during laboratory-based high-intensity,intermittent cycling activity     

Howard T. Hurst  Stephen Atkins 《Journal of sports sciences》2013,31(8):863-868

Abstract

The purpose of this study was to assess the agreement between two mobile cycle ergometer systems for recording high-intensity, intermittent power output. Twelve trained male cyclists (age 31.4 ± 9.8 years) performed a single 3 min intermittent cycle test consisting of 12 all-out efforts, separated by periods of passive recovery ranging from 5 to 15 s. Power output was recorded using a Polar S710 heart rate monitor and power sensor kit and an SRM Powercrank system for each test. The SRM used torque and angular velocity to calculate power, while the S710 used chain speed and vibration to calculate power. Significant differences (P < 0.05) in power were found at 8 of the 12 efforts. A significant difference (P = 0.001) was also found when power was averaged over all 12 intervals. Mean power was 556 ± 102 W and 446 ± 61 W for the SRM and S710 respectively. The S710 underestimated power by an average of 23% with random errors of ?/÷ 24% when compared with the SRM. Random errors ranged from 36% to 141% with a median of 51%. The results indicate there was little agreement between the two systems and that the Polar S710 did not provide a valid measure of power during intermittent cycling activity when compared with the SRM. Power recorded by the S710 system was influenced greatly by chain vibration and sampling rates.  相似文献   

Sport governance encounters: Insights from lived experiences     

David Shilbury  Lesley Ferkins  Liz Smythe 《Sport Management Review》2013,16(3):349-363

This study explored sport governance practice from the lived experience of one informant spanning a 30-year period in the governance of two sport organisations (basketball and cricket). Hermeneutic phenomenology, the methodological framework used for this study, seeks to grasp the everyday world, and draw insight and meaning from it. The method involves a series of in-depth interviews with one research participant, supplemented by document analysis. Interviews were analysed using an interpretative process which blended the world views of both the participant and researchers. The participant lived through an era of increasing professionalisation within sport. His narrative, which tapped into his governance expertise at state, national and international levels, provides insights into the transition from an amateur to a commercial culture, referred to in this paper as ‘two worlds colliding’. From this narrative, three related themes were identified and labelled, ‘volunteer and cultural encounters’; ‘structural encounters’; and ‘adversarial encounters’. In drawing on hermeneutic philosophy, and highlighting that which has been hidden from view, direction for future research and practice within the sport governance domain is offered. These directions invite scholars to think about future sport governance research as it relates to federated structures and how collaborative governance theory can sharpen the focus in this domain.  相似文献   

Is reported childhood sexual abuse associated with the psychopathological characteristics of patients who experience auditory hallucinations?     

Offen L  Waller G  Thomas G 《Child abuse & neglect》2003,27(8):919-927

OBJECTIVE: The aim of this study was to determine whether reported childhood sexual abuse is related to the severity of symptoms in patients who experience auditory hallucinations. METHOD: A sample of 26 adult male and females with psychotic disorders involving auditory hallucinations were interviewed and were asked to complete three self-report measures: the Dissociative Experiences Scale (DES-II and DES-taxon versions); the Beck Depression Inventory (BDI); and the Beliefs About Voices Questionnaire (BAVQ). They were also asked about any history of sexual abuse in childhood. RESULTS: A history of childhood sexual abuse was reported by 10 of the 26 patients (38.5%), and was associated with higher levels of depression and dissociation, as well as being linked to a tendency to regard the voices as more malevolent. The same three features were all associated with the age at first reported abuse, with a younger age of first experience being related to higher levels of psychopathology in all instances. CONCLUSIONS: These results require replication and refinement in future research, but indicate a need for greater attention to be paid to the possible role of childhood sexual abuse when understanding and treating auditory hallucinations.  相似文献   

Elborn,S. (2015) Handbook of Teaching Early Reading: more than phonics Leicester: UKLA. ISBN: 13:978–1–897638–98–9     

Liz Chamberlain 《Literacy》2016,50(2):110-110

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Beyond Relative Autonomy Theories of the State in Education     

Liz Gordon 《British Journal of Sociology of Education》1989,10(4):435-447

This paper argues against C. Fritzell's claim that relative autonomy theory “has substantial potential within the sociology of education”. It is argued that the inconsistencies in both conception and application of this approach have led to the virtual omission of the sphere of the state from the neo‐Marxist sociology of education. This omission seriously limits research into the politics of education and leads to analyses that are over‐generalised or reductionist, and which tend to make untestable assertions about the relationship between state structures and state agents. The notions of ‘limits’ and ‘capacity’ are examined as being possible analytic tools to promote more adequate reconceptualisations of the state in education.  相似文献   

Enchanting a disenchanted child: revolutionising the means of education using Information and Communication Technology and e‐learning     

Liz Beastall 《British Journal of Sociology of Education》2006,27(1):97-110

The Department for Education and Skills currently shows a high regard for the potential of technology transforming the British education system. Government White papers demonstrate e‐learning‐based unification strategies that reinforce the message that introducing Information and Communication Technology (ICT) will raise standards in schools. This paper examines the effect of these developments on teachers and pupils, and questions the government’s motivation for change. The introduction of ICT has not been complemented by increased levels of effective professional development for teaching staff in the pedagogy of ICT across the curriculum and may have merely served to reinforce the generational digital divide. In attempting to enchant the pupils, the government may have alienated the teachers. This paper suggests that the Department for Education and Skills should place more emphasis on developing strategies and providing funding for solutions to gaps in the professional development of teachers in their pedagogical understanding of ICT across the curriculum.  相似文献   

Problematic placement: pathways pre-service teachers’ perspectives on their infant/toddler placement   总被引：1，自引：0，他引：1  

Liz Rouse  Anne-Marie Morrissey  Mohammadali Rahimi 《Early Years: An International Journal of Research and Development》2012,32(1):87-98

The inclusion of an infant/toddler placement in a ‘pathways’ early childhood teaching degree, where students already have qualifications and experience in working with young children, can be problematic. This pilot study investigated student teachers’ views on their infant/toddler (birth-to-two-years) placement. Sixty-six students completing their early childhood education degree at an Australian university responded to a survey seeking their perspectives on the effectiveness of the placement in developing teacher confidence, knowledge and skills, and the quality of the supervision they received. The participants had entered their degree with a two-year Diploma of Children’s Services. Responses indicated significant dissatisfaction with the quality of supervision, the absence of teacher-mentors, and the lack of opportunities to practise new approaches. Participants commented that they ‘already knew’ how to work with this age group, and that they aspired to work with older children. The results align with other findings on factors associated with positive placements, and raise questions about the effectiveness of the infant/toddler placement in its current form.  相似文献   

International trends in health science librarianship: part 1 - the English speaking world     

Browne R  Lasserre K  McTaggart J  Bayley L  McKibbon A  Clark M  Perry GJ  Murphy J 《Health information and libraries journal》2012,29(1):75-80

This is the second in a series of articles exploring international trends in health science librarianship in the first decade of the 21st century. The invited authors were asked to reflect on developments in their country - viz. Australia, Canada, New Zealand and the United States. Future issues will track trends in Northern Europe, the Nordic countries, Southern Europe and Latin America. JM.  相似文献   

Science Choreography: A Movement-Based Approach to Biology Teaching     

Laura Grabel  Michael Weir  Laurel F. Appel  Elizabeth Johnson  Richard McCarthy  Liz Lerman 《CBE life sciences education》2013,12(4):582-583

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Refereeing Process in Mathematics and Physics: Meaningful Changes and Models for Improvement     

Inna K. Shingareva  Carlos Lizárraga-Celaya 《Publishing Research Quarterly》2013,29(3):271-284

Contemporary scientific publishing in mathematics and physics (as in other exact sciences) is a complex and rapidly changing process. The most important element of this process, namely, the refereeing process is considered. In particular, meaningful changes towards refereeing process in mathematics and physics are identified and predicted. Considering a transition that takes place from the traditional refereeing system to other models and introducing the four basic parameters of the refereeing process, namely, the review stage, the openness for editors, referees and authors, journals and e-journals, feedback and e-feedback, several different models are proposed and described for improving the traditional refereeing system (e.g., 2-stage open and semi-open pre-review models, 1-stage open and blind pre-review models, and 0-stage open post-review models).  相似文献