Comparison of two methodological approaches for the mechanical analysis of single-joint isoinertial movement using a customised isokinetic dynamometer*     

Mathieu Plautard  Gaël Guilhem  Vincent Fohanno  Antoine Nordez  Christophe Cornu 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(3):287-302

Compared to isokinetic and isometric tests, isoinertial movements have been poorly used to assess single-joint performance. Two calculation procedures were developed to estimate mechanical performance during single-joint isoinertial movements performed on a customised isokinetic dynamometer. The results were also compared to appreciate the effects of measurement systems and calculation procedures. Five participants performed maximal knee extensions at four levels of resistance (30, 50, 70 and 90% of the one-repetition maximum, 1-RM). Joint angular velocity and torque were assessed from customised isokinetic dynamometer measures (method A) and from weight stack kinematic (method B). Bland–Altman plots and mean percent differences (M_diff) were used to assess the level of agreement for mean and peak angular velocity and torque. A Passing–Bablok regression was performed to compare the angular velocity-angle and torque-angle relationships computed from the two analysis methods. The results showed a high level of agreement for all mechanical parameters (M_diff < 6% for all parameters). No statistically significant differences were observed between methods A and B in terms of angular velocity-angle and torque-angle relationships except at 30% of 1-RM for the torque-angle relationship. Both methodologies provide comparable values of angular velocity and torque, offering alternative approaches to assess neuromuscular function from single-joint isoinertial movements.  相似文献   

Energy Internet forums as acceleration phase transition intermediaries     

Sampsa Hyysalo  Jouni K. Juntunen  Mari Martiskainen 《Research Policy》2018,47(5):872-885

Citizen users play important roles in the acceleration phase of energy transitions, during which small-scale renewable energy technologies (S-RET) become taken up more widely. From users’ perspective, turning the early, and typically slow, proliferation into a more rapid and widespread diffusion requires not only the adoption of S-RET but also the adaptation, adjustment, intermediation and advocacy of S-RETs. These activities become necessary because S-RET face a variety of market, institutional, cultural and environmental conditions in different countries. New Internet-based energy communities have emerged and acted as key user-side transition intermediaries that catalyse these activities by qualifying market information, articulating demand and helping citizen users to reconfigure the standard technology to meet the specificities of different local contexts. In doing so, Internet communities foster an appreciatively critical discourse on technology. Such user intermediation is important in expanding the markets for S-RET beyond that of enthusiasts, environmentalists and other early adopters, to the early majority of adopters who demand more exposure, clearer information and less uncertainty about new technology options.  相似文献   

Examining social studies teachers’ resistances towards teaching Aboriginal perspectives: the case of Alberta     

David Scott  Raphaël Gani 《Diaspora, Indigenous, and Minority Education》2018,12(4):167-181

From 2005–2010 the province of Alberta introduced a social studies program of study mandating that all K–12 teachers use the lens of First Nations, Metis, and Inuit perspectives to help students understand the past as well as key concepts and contemporary issues. This paper offers a systematic examination of a range of data sources, including government reports, surveys, and peer-reviewed journal articles, which have documented teachers’ responses to this curricular mandate. Our analysis revealed a typology of resistances towards this curricular directive that have remained constant over a nearly twenty-year period. Guided by insights from sociocultural theory and the work of Indigenous scholars (e.g.; Marker, 2011), we trace the origins and limitations of these resistances.  相似文献   

Peer Assessment Training in Teacher Education: Effects on performance and perceptions     

Dominique M. A. Sluijsmans  Saskia Brand-Gruwel  Jeroen J. G. van Merriënboer 《Assessment & Evaluation in Higher Education》2002,27(5):443-454

The implementation of peer assessment receives much attention in teacher education. This paper reports the effects of peer assessment training on the performance of student teachers. Ninety-three student teachers were randomly assigned to control groups and experimental groups. The experimental groups were trained in defining performance criteria, giving feedback and writing assessment reports. This was done through peer assessment tasks that were embedded in a redesigned course. Analyses of data derived from peer assessment reports written by the students showed that the experimental groups surpassed the control groups in the quality of the assessment skill. As a result of the training, students from the experimental groups also scored significantly higher grades for the end products of the course than students from the control groups. The results of the questionnaire showed that all students were significantly more satisfied with the redesigned course.  相似文献   

Characteristics of hospital-based Munchausen Syndrome by Proxy in Japan     

Fujiwara T  Okuyama M  Kasahara M  Nakamura A 《Child abuse & neglect》2008,32(4):503-509

OBJECTIVE: This article explores characteristics of Munchausen Syndrome by Proxy (MSBP) in Japan, a country which provides an egalitarian, low cost, and easy-access health care system. METHODS: We sent a questionnaire survey to 11 leading doctors in the child abuse field in Japan, each located in different hospital-based sites. Child abuse doctors answered questions regarding the characteristics of MSBP cases for whom they had helped care. RESULTS: Twenty-one MSBP cases (20 families) were reported. Characteristics of the victims included: no differences based on sex, 4.6 years of age on average when MSBP was confirmed, and an average of 1.9 years duration of MSBP abuse. Biological mothers were at least one of the perpetrators in 95% of cases. Among the 12 cases (57%) who remained with their families, 2 victims died. Only 5% of perpetrators had a medical background or relatives who engaged in healthcare work. CONCLUSION: There are similar features of MSBP cases between Japan and other English-speaking countries, such as the UK or the US. However, perpetrators of MSBP in Japan did not have a medical background. Easier access to hospital resources in Japan may give greater opportunities for perpetrators to obtain medical knowledge from doctors or nurses. PRACTICE IMPLICATIONS: The findings suggest that perpetrators of MSBP should not be assumed to possess a medical background in a country which provides universal medical care such as Japan. A contributory factor of MSBP may be the high frequency of medical consultations and equal level of accessibility of medical resources for Japanese citizens. Social welfare services that need to decide on custody for MSBP victims should recognize the relatively high risk of life-threatening danger in their family of origin. Further collaboration between hospital staff including pediatricians, nurses, medical social workers and staff at the social welfare services is needed to protect children from MSBP.  相似文献   

The translucent cadaver: An evaluation of the use of full body digital x-ray images and drawings in surface anatomy education     

Kotzé SH  Mole CG  Greyling LM 《Anatomical sciences education》2012,5(5):287-294

It has been noted by staff at the Faculty of Health Sciences, Stellenbosch University that medical students neglect the study of surface anatomy during dissection. This study reports on the novel use of Lodox® Statscan® images in anatomical education, particularly the teaching of surface anatomy. Full body digital X‐ray images (Lodox Statscan) of each cadaver (n = 40) were provided to second year medical students. During dissection students were asked to visualize landmarks, organs, and structures on the digital X‐ray and their cadaver, as well as palpate these landmarks and structures on themselves, their colleagues, and the cadaver. To stimulate student engagement with surface anatomy, dissection groups were required to draw both the normal and actual position of organs on a laminated image provided. The accuracy of the drawings was subsequently assessed and students were further assessed by means of practical identification tests. In addition, students were asked to complete an anonymous questionnaire. A response rate of 79% was obtained for the student questionnaire. From the questionnaire it was gathered that students found the digital X‐ray images beneficial for viewing most systems' organs, except for the pelvic organs. Although it appears that students still struggle with the study of surface anatomy, most students believed that the digital X‐rays were beneficial to their studies and supported their continued use in the future. Anat Sci Educ. © 2012 American Association of Anatomists.  相似文献   

Caregivers’ cortisol levels and perceived stress in home-based and center-based childcare     

Marleen G. GroeneveldHarriet J. Vermeer  Marinus H. van IJzendoornMariëlle Linting 《Early childhood research quarterly》2012,27(1):166

The current study examined professional caregivers’ perceived and physiological stress, and associations with the quality of care they provide. Participants were 55 female caregivers from childcare homes and 46 female caregivers from childcare centers in the Netherlands. In both types of settings, equivalent measures and procedures were used. On non-work days, caregivers’ salivary cortisol levels decreased between 11 am and 3 pm, whereas on work days, caregivers’ cortisol levels remained at the same level during this period. Caregivers’ cortisol levels and perceived stress did not differ across the two types of settings. In home-based childcare, caregivers offered higher-quality caregiving, compared to caregivers in center-based childcare. In home-based childcare - but not in center care - caregivers’ negative appraisal was associated with less positive caregiver behavior. These findings suggest that work at childcare influences cortisol secretion in professional caregivers, and that perceived stress but not cortisol is associated with quality of care.  相似文献   

The differential effects of task complexity on domain-specific and peer assessment skills     

Marjo J. van Zundert  Dominique M. A. Sluijsmans  Karen D. Könings  Jeroen J.G. van Merriënboer 《教育心理学》2012,32(1):127-145

In this study the relationship between domain-specific skills and peer assessment skills as a function of task complexity is investigated. We hypothesised that peer assessment skills were superposed on domain-specific skills and will therefore suffer more when higher cognitive load is induced by increased task complexity. In a mixed factorial design with the between-subjects factor task complexity (simple, n?=?51; complex, n?=?59) and within-subjects factor task type (domain-specific, peer assessment), secondary school students studied four integrated study tasks, requiring them to learn a domain-specific skill (i.e. identifying the six steps of scientific research) and to learn how to assess a fictitious peer performing the same skill. Additionally, the students performed two domain-specific test tasks and two peer assessment test tasks. The interaction effect found on test performance supports our hypothesis. Implications for the teaching and learning of peer assessment skills are discussed.  相似文献   

Family counseling in the Netherlands for Turkish-origin parents of deaf children with a cochlear implant     

Wiefferink CH  Vermeij BA  Uilenburg N 《American annals of the deaf》2012,156(5):459-468

Cultural elements such as language, beliefs about health, and family context play important roles in the uptake of rehabilitation and treatment of deafness. Because of cultural issues, minority groups often do not receive optimal care. Focusing on the Netherlands, the researchers explored how the rehabilitation and counseling of deaf children of Turkish-origin parents can be improved. The most important findings were that (a) most parents initially did not believe their child was deaf and regretted later that they did not start hearing rehabilitation earlier; (b) parents had little confidence in the Dutch health care system and sought a second opinion from a medical doctor of their own national origin; (c) parents did not know how to be actively involved in the care of their deaf child. Implications for practice aimed at improving rehabilitation and counseling for these children are described.  相似文献   

Pathways underlying somatic complaints in children and adolescents who are deaf or hard of hearing     

Kouwenberg M  Rieffe C  Theunissen SC  Oosterveld P 《Journal of deaf studies and deaf education》2012,17(3):319-332

Frequent somatic complaints are not only a problem in themselves but also related to other difficulties. So far, no conclusive findings have been reported about the prevalence of and factors underlying these complaints in children and adolescents who are deaf or hard of hearing (DHH). Such information would be valuable for prevention and intervention. Therefore, the aim of this study was to examine the prevalence of somatic complaints and their relation with emotional functioning in DHH youngsters, as compared with hearing youngsters. This was established by assessing how somatic complaints, mood states, and sense of coherence were experienced by 186 Dutch participants (mean age = 11;07 years). DHH and hearing groups were compared using multivariate analysis of variance and structural equation modeling. The results showed that somatic complaints were reported equally often for both groups, but that the pathways leading to these complaints were partly different. Only in DHH participants were feelings of fear associated with more somatic complaints. The results suggest that DHH children and adolescents would benefit from support in the regulation of fear and its causes. Other aspects affecting adjustment outcomes of DHH youngsters were education type and communication mode.  相似文献