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Andrea Giorgi Maurizio Vicini Luca Pollastri Erica Lombardi Emilio Magni Andrea Andreazzoli 《Journal of sports sciences》2018,36(22):2608-2613
Bioelectrical impedance vector-analysis (BIVA) describes cell-mass, cell function and hydration status of an individual or a group. The goal of the present investigation was to provide bioelectrical impedance data for 525 male road cyclists (155 professionals, 79 elite, 59 elite-youth, and 232 amateurs) at the time of their optimal performance level. Data were plotted on the resistance-reactance (R-Xc) graph to characterize cyclists group vectors using BIVA. Compared to the general male population, the mean vector position of the road cyclists indicates a higher body cell mass (BCM) and phase angle (p<0.001). The vector position of the high-performance, compared to the amateur cyclists showed similar patterns with higher BCM and phase angles and higher reactance values for the high-performance athletes (p<0.001). The bio-impedance data were used to calculate the 50%, 75%, and 95% tolerance ellipses of each group of cyclists. The characteristic vector positions of the road cyclists indicate normal hydration and greater muscle mass and function of the high-performance cyclists compared to amateur cyclists and the normal population. The cyclists specific tolerance ellipses, particularly the high-performance cyclists might be used for classifying a cyclist according to the individual vector position and to define target vector regions for lower level cyclists. 相似文献
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Antonio Volpentesta Nicola Frega Maurizio Muzzupappa 《European Journal of Engineering Education》2001,26(4):391-405
This paper deals with a semester-long educational experience the authors led at the University of Calabria for reproducing current developments and uncertainties in real-world concurrent engineering, knowledge management practice and virtual enterprise organization. Students with different backgrounds (mechanical engineering, computer science engineering and management engineering) were selected in order to form a laboratory class and then were divided into many multidisciplinary teams. Such teams played different roles and were required to collaborate on the Web to simulate a virtual enterprise, which was aimed at designing virtual prototypes of average complexity articles. In addition to that, any team was involved in the construction of a knowledge base for codifying the explicit knowledge arising from the execution of technical and managerial tasks. The paper deals with models, methodologies and technologies that have been used in this laboratory experience and, moreover, it describes an approach for simulating, in an educational environment, some aspects of the behaviour of virtual enterprises generated by a virtual organization. 相似文献
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Maurizio Marinelli 《Asia Pacific Journal of Education》2007,27(2):115-129
This article is written in line with the debate on internationalisation in higher education, especially taking into consideration the connections between the rise of East Asia and the need to internationalise the universities in the West. The author focuses specifically on his professional experience as a member of the Expanding East Asian Studies programme at Columbia University (from now on ExEAS) in 2003–2004. He briefly illustrates his contribution to ExEAS and focuses on the ways this specific endeavour forced him to rethink critically his previous experience as researcher and instructor of East Asia-related disciplines. Through this article, he aims to problematise some of the established categories with which East Asian studies is often approached, and he points out the need to reconsider the shifting points of dialogue, rethinking the reductionist ways in which China and Japan are often constructed within the Western academy. 相似文献
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AbstractGrounded in achievement goal theory and self-determination theory, this cross-sectional study examined the relationship between perceived motivational climate and individuals’ motivation as well as the mediation effect of psychobiosocial states as conceptualised within the individual zones of optimal functioning (IZOF) model. Young students (N = 167, age range 14–15 years) taking part in physical education classes completed measures of teacher-initiated motivational climate, task and ego orientation, motivation and psychobiosocial states. Simple and serial mediation analyses indicated that a perceived mastery climate and individuals’ task orientation were related to intrinsic motivation and identified regulation through the mediation of pleasant/functional psychobiosocial states. In contrast, a perceived performance climate was related to external regulation and amotivation through the mediation of unpleasant/dysfunctional psychobiosocial states. Regression analysis results also showed that discrete psychobiosocial states accounted for a significant proportion of variance in motivational variables. Taken together, findings highlight the role of psychobiosocial states as mediators of the relationship between motivational climate and an individual’s motivation, and suggest that educators should consider a wide range of individual’s functional and dysfunctional reactions deriving from their instructional activity. 相似文献
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Maurizio Fanchini Carlo Castagna Aaron J. Coutts Federico Schena Alan McCall Franco M. Impellizzeri 《Journal of sports sciences》2014,32(20):1950-1957
AbstractThe aim of this study was to compare the reliability, internal responsiveness and interchangeability of the Yo-Yo intermittent recovery test level 1 (YY1), level 2 (YY2) and submaximal YY1 (YY1-sub). Twenty-four young soccer players (age 17 ± 1 years; height 177 ± 7 cm; body mass 68 ± 6 kg) completed each test five times within pre- and in-season; distances covered and heart rates (HRs) were measured. Reliability was expressed as typical error of measurement (TEM) and intraclass correlation coefficient (ICC). Internal responsiveness was determined as effect size (ES) and signal-to-noise ratio (ESTEM). Interchangeability was determined with correlation between training-induced changes. The TEM and ICC for distances in the YY1 and YY2 and for HR in YY1-sub were 7.3% and 0.78, 7.1% and 0.93 and 2.2% and 0.78, respectively. The ESs and ESTEMs were 0.9 and 1.9 for YY1, 0.4 and 1.2 for YY2 and ?0.3 and ?0.3 for YY1-sub. Correlations between YY1 vs. YY2 and YY1-sub were 0.56 to 0.84 and ?0.36 to ?0.81, respectively. Correlations between change scores in YY1 vs. YY2 were 0.29 and ?0.21 vs. YY1-sub. Peak HR was higher in YY1 vs. YY2. The YY1 and YY2 showed similar reliability; however, they were not interchangeable. The YY1 was more responsive to training compared to YY2 and YY1-sub. 相似文献
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Antonella D'Amico Maurizio Cardaci Santo Di Nuovo Jack A. Naglieri 《Learning and individual differences》2012,22(1):128-132
Lynn (2010a, 2010b) argued that individuals from south Italy have a lower IQ than individuals from north Italy, and that these differences in IQ are at the basis of north–south gap in income, education, infant mortality, stature, and literacy. In the present paper, we discuss several theoretical and methodological aspects which we regard as flaws of Lynn's studies. Moreover, we report scores of southern Italian children on Raven's Progressive Matrices and a north–south comparison for the PASS theory of intelligence as measured by the Cognitive Assessment System (Taddei & Naglieri, 2006). Both results reveal similar levels of performance of northern and southern Italian children in fluid intelligence and PASS (Planning, Attention, Simultaneous, and Successive) cognitive abilities. 相似文献
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Massimo Papini Roberto Leonetti Maurizio Timpanelli Luca Mercatali Gavino Maciocco 《International journal for the advancement of counseling》1999,21(3):221-230
This report deals with a program to train the General Practitionners and Pediatricians (P&;P) in child and adolescent mental health (CAMH) counselling, undertaken by the Community Service child neuropsychiatrists (CNs) in the Mugello, a mountain region near Florence (Italy) of approx. 500 square miles, with about 58,000 residents of which 9,000 under eighteen years of age. The program began in 1996 and, after an organizational phase, the P&;P's professional interests and needs dealing with CAMH were tested (review phase). The remarkable P&;P's interest and motivations in CAMH were confirmed by the significant percentage (about 50%) of voluntary attendance and the high percentage (about 91%) of active participation in the meetings and by the 50% increment of first referrals to specialists during a test-period lasting two month (February--March 1997/96). A close-ended questionnaire investigated the most frequent CAMH problems faced by the P&;P, which prevalently turned out to be ordinary events. The high rate (about 54%) of missing responses to questions about the P&;P's possibility to aknowledge their own sources of knowledge on such problems and the high positive response rate (about 70%) indicating a non professional source of knowledge reveal the P&;P's awareness of professional insecurity in CAMH, and this was the cause of their difficulties in distinguishing between ordinary events and psychopathology. The P&;P replied positively in 93% of the cases to the question “do you think it is useful for your professional self-confidence to examine these problem areas in depth?” The method that they preferred proved to be “continuing training courses” (35%). These results provided the basis for the implementation phase with a continuing professional training program. The P&;P's awareness of professional insecurity and the admission of their need for training and information in CAMH motivate their requests for CNs Counselling reference in order to deal with psychiatric cases, while the P&;P's humane approach with patients, revealed during the meetings and in the questionnaire, simplifies the task of training the P&;P to become counsellors in CAMH problems which are less severe. 相似文献
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Fiorenzo Franceschini Maurizio Galetto Domenico Maisano Luca Mastrogiacomo 《Journal of Informetrics》2013,7(1):109-116
Based on an idea by Kosmulski, Franceschini et al. (2012, Scientometrics 92(3), 621–641) propose to classify a publication as “successful” when it receives more citations than a specific comparison term (CT). In the intention of the authors CT should be a suitable estimate of the number of citations that a publication – in a certain scientific context and period of time – should potentially achieve. According to this definition, the success-index is defined as the number of successful papers, among a group of publications examined, such as those associated to a scientist or a journal. In the first part of the paper, the success-index is recalled, discussing its properties and limitations. Next, relying on the theory of Information Production Processes (IPPs), an informetric model of the index is formulated, for a better comprehension of the index and its properties. Particular emphasis is given to a theoretical sensitivity analysis of the index. 相似文献
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