排序方式： 共有58条查询结果，搜索用时 15 毫秒
51.
Maria Cristina Matteucci Carlo Tomasetto Patrizia Selleri Felice Carugati 《European Journal of Psychology of Education - EJPE》2008,23(4):421-432
Achievement evaluation in school contexts may be considered as a kind of social judgment, which is affected by social and
moral determinants since it is not merely an estimation of pupils’ accomplishment (Dompnier, Pansu, & Bressoux, 2006; Weiner,
2003). Teachers’ judgments have been investigated starting from the analysis of two theoretical approaches: the norm of internality
(Dubois, 2003), and the attributional approach to social motivation (Weiner, 2006). In order to study the social valorization
of internal explanations referring to effort in school context, an empirical research has been conducted. Our study investigates
how teachers evaluate fictitious pupils, which are supposed to explain events by means of different types of causal explanations.
According to our results, pupils providing effort-based explanations receive more positive judgments. Findings are discussed
by considering effort as a key principle of school environments. 相似文献
52.
53.
Abstract Several recent investigations showed that the best marathon time of an individual athlete is also a strong predictor variable for the race time in a 100-km ultra-marathon. We investigated similarities and differences in anthropometry and training characteristics between 166 100-km ultra-marathoners and 126 marathoners in recreational male athletes. The association of anthropometric variables and training characteristics with race time was assessed by using bi- and multi-variate analysis. Regarding anthropometry, the marathoners had a significantly lower calf circumference (P?相似文献
54.
Weitkunat T Knechtle B Knechtle P Rüst CA Rosemann T 《Journal of sports sciences》2012,30(10):1003-1013
Body mass changes during ultra-endurance performances have been described for running, cycling and for swimming in a heated pool. The present field study of 20 male and 11 female open-water swimmers investigated the changes in body composition and hydration status during an ultra-endurance event. Body mass, both estimated fat mass and skeletal muscle mass, haematocrit, plasma sodium concentration ([Na+]) and urine specific gravity were determined. Energy intake, energy expenditure and fluid intake were estimated. Males experienced significant reductions in body mass (-0.5 %) and skeletal muscle mass (-1.1 %) (P < 0.05) during the race compared to females who showed no significant changes with regard to these variables (P > 0.05). Changes in percent body fat, fat mass, and fat-free mass were heterogeneous and did not reach statistical significance (P > 0.05) between gender groups. Fluid intake relative to plasma volume was higher in females than in males during the ultra-endurance event. Compared to males, females' average increase in haematocrit was 3.3 percentage points (pp) higher, urine specific gravity decrease 0.1 pp smaller, and plasma [Na+] 1.3 pp higher. The observed patterns of fluid intake, changes in plasma volume, urine specific gravity, and plasma [Na+] suggest that, particularly in females, a combination of fluid shift from blood vessels to interstitial tissue, facilitated by skeletal muscle damage, as well as exercise-associated hyponatremia had occurred. To summarise, changes in body composition and hydration status are different in male compared to female open-water ultra-endurance swimmers. 相似文献
55.
Corsetti R Lombardi G Barassi A Lanteri P Colombini A D'Eril GM Banfi G 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(2):237-246
Introduction
The study of cardiac response to strenuous and continuous exercise is crucial to understanding the physiology of endurance. N-terminal proB-type natriuretic peptide (NT-proBNP) is a potential marker for monitoring myocardial wall stress, and troponins (TnT and TnI) are widely used in the diagnosis of cardiac ischemia and infarction. Strenuous exercise may generate transitory ischemia, myocardial stress, and diastolic left ventricular dysfunction, inducing the increased production of both these biomarkers. We measured changes in NT-proBNP and TnT in elite cyclists during a 3-week stage race, a model of strenuous exercise.Materials and methods:
The study population was 9 professional cyclists participating in the 2011 Giro d’Italia. Pre-analytical and analytical phases scrupulously followed official recommendations. Anthropometric data, net energy expenditure and cardiac indexes (rate, diastolic and systolic blood pressure) were recorded. Blood samples were drawn pre-race (day −1) and at days 12 and 22; NT-proBNP and highly sensitive-troponin (Hs-TnT) concentrations were assayed and corrected for plasma volume changes.Results:
Body-mass index decreased and energy expenditure increased by 52% during the race. NT-proBNP concentrations increased [day −1: 23.52 ng/L (9.67–34.33); day 12: 63.46 ng/L (22.15–93.31); P = 0.039; day 22: 89.26 ng/L (34.66–129.78) vs. day −1; P < 0.001] and correlated with heart rate (r = −0.51; P = 0.006), systolic pressure (r = 0.39; P = 0.046) and energy expenditure (r = 0.70; P < 0.001). TnT concentrations did not vary, but a widened TnT amplitude distribution was observed.Conclusions:
Increases in NT-proBNP correlated with higher energy expenditure over a 3-week cycling stage race, possibly indicating myocardial stress. 相似文献56.
The purpose of this paper is to identify how ethnically diverse schools can discursively maintain a good reputation. Reputation allows attracting the mixed student population necessary to achieve inclusion or closing the gap between the attainment of ethnic majority and minority students. In semi‐market educational systems where students are free to attend the school of their choice yet education has no market price, the share of ethnic minority students functions as one of the main indicators of a school's educational quality. Ethnically diverse schools are thus perceived as offering lower quality education. Based on the case of a highly ethnically diverse, inclusive secondary school in the exclusive Flemish secondary educational semi‐market, we found that a positive reputation could be achieved through three related discursive practices: affirming the high‐quality education of the school, redefining the relation between students' ethnic diversity and educational quality and reconstructing ethnic diversity as an educational resource. 相似文献
57.
Hyperlink format, categorization abilities and memory span as contributors to deaf users hypertext access 总被引：1，自引：0，他引：1
Fajardo I Farjardo I Arfé B Benedetti P Altoé G 《Journal of deaf studies and deaf education》2008,13(2):241-256
Sixty deaf and hearing students were asked to search for goods in a Hypertext Supermarket with either graphical or textual links of high typicality, frequency, and familiarity. Additionally, they performed a picture and word categorization task and two working memory span tasks (spatial and verbal). Results showed that deaf students were faster in graphical than in verbal hypertext when the number of visited pages per search trial was blocked. Regardless of stimuli format, accuracy differences between groups did not appear, although deaf students were slower than hearing students in both Web search and categorization tasks (graphical or verbal). No relation between the two tasks was found. Correlation analyses showed that deaf students with higher spatial span were faster in graphical Web search, but no correlations emerged between verbal span and verbal Web search. A hypothesis of different strategies used by the two groups for searching information in hypertext is formulated. It is suggested that deaf users use a visual-matching strategy more than a semantic approach to make navigation decisions. 相似文献
58.
Simona Cristiano Patrizia Proietti 《The Journal of Agricultural Education and Extension》2019,25(2):103-116
Purpose: This study explores the potential of the Farm Accountancy Data Network (FADN) to assess the technical, economic and environmental effects of cooperative innovation projects at farm level.
Design/Methodology/Approach: The analysis of the FADN potential relies on the classification of innovations and the co-identification, through the Most Significant Change (MSC) approach, of the most relevant indicators for tracking and assessing the performances of innovations and attributing to them the effects of a specific innovation.
Findings: The study shows that the FADN has a certain range of useful indicators and that they have a good coverage of the different types of innovation. Furthermore, the farm visits let emerge the importance of participatory approaches to capture the different changes and interplays occurred in farming processes.
Practical implications: The paper lays the foundations for the adaptation of the current methodology for data collecting and provides useful insights concerning the overcoming representativeness claims, costs’ issues, and problems related to the observation time limit.
Theoretical implications: The paper reveals the importance of participatory monitoring and evaluation approaches in helping the collection of more robust and relevant account data on farm, as well as in attributing certain results to a specific innovation and recognising synergies and side-effects of cooperative processes.
Originality/Values: The paper provides some recommendations on how to enlarge the scope of the FADN survey in order to be used effectively in the analysis of the performance of cooperative innovations at farm level. 相似文献