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61.
Marco Nese Francesco Nicotra Charles A. Pleasance Aaron Foisi Nmungwun Heather E. Hudson 《Communication Booknotes Quarterly》2013,44(2):48-49
Antonio Meucci 1808–1889 by Marco Nese and Francesco Nicotra (Italy/Italy Magazine, 150 Fifth Ave., New York, NY 10011—price not given, ISBN not provided) The Spirit of Independent Telephony by Charles A. Pleasance (Independent Telephone Books, PO Box 321, Johnson City, TN 37601—$29.50, ISBN 0-9622205-0-7) Video Recording Technology: Its Impact on Media and Home Entertainment by Aaron Foisi Nmungwun (Hillsdale, NJ: Lawrence Erlbaum Associates, 1989—$49.95/$24.95, ISBN 0-0858-0360-2 hard, and 0-8058-0622-9 paper) Communication Satellites: Their Development and Impact by Heather E. Hudson (New York: Free Press, 1990—$24.95, ISBN 0-02-915320-4) 相似文献
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This article presents in summary a selection of the work conducted by OECD in the field of technology and education, which has been an on-going focus of OECD work since the 1980s. Recently, much of this has been under the heading of ‘New Millennium Learners’, but it has also included the widening of student achievement surveys towards digital literacy; reviews of e-learning in higher education, surveys on Open Education Resources (OER); technology as a source of innovation; and analyses of the digital resources market and educational technology patents. The article proposes the more holistic focus on ‘learning environments’ through which to analyse the very diverse ways in which technology can be integrated into education and as a design framework. This is drawn from a report of the OECD Innovative Learning Environments (ILE) project to be published in 2013, itself based on 40 case studies from different countries and regions. It suggests that contemporary learning environments should be: i) Innovating the ‘pedagogical core’; ii) Engaging the ‘Design/Redesign Leadership Circle’; iii) Widening connections and capacity through partnerships; and iv) Promoting 21st century effectiveness (based on the principles derived from the 2010 ILE learning research review). The article then applies this framework to show how technology shapes learning environments in many different ways. The article questions over-reliance on individuals navigating successfully to access non-formal learning opportunities and rejects the argument that learning institutions should simply adapt more adequately to available technologies. Instead, technology should be fully exploited in well-designed learning environments. 相似文献
64.
Dina Guglielmi Ilaria Bruni Silvia Simbula Franco Fraccaroli Marco Depolo 《European Journal of Psychology of Education - EJPE》2016,31(3):323-340
Despite the growing body of research on work engagement, little is known about what drives work engagement among different age cohorts. This study aims to investigate whether engagement varies across age cohorts and examine the job resources that foster teacher engagement. A questionnaire was distributed to 537 teachers who were employed in elementary, lower and upper secondary school. Findings show that work engagement did indeed vary across the diverse age group and is influenced by different resources. In line with previous studies, data revealed that the engagement of younger teachers is driven by the opportunity for development and interaction with colleagues, while older employees appreciate the opportunity to see their competencies acknowledged. What is most noteworthy is the opportunity to design practices and to provide every age group with the appropriate set of motivators. 相似文献
65.
Annemarie M.H. de Witte Marco J.M. Hoozemans Monique A.M. Berger Lucas H.V. van der Woude Dirkjan Veeger 《Journal of sports sciences》2016,34(9):811-820
Improved understanding of mobility performance in wheelchair basketball is required to increase game performance. The aim of this study was to quantify the wheelchair-athlete activities of players in different field positions and of different playing standard during wheelchair basketball matches. From video analysis, absolute and relative duration and frequency of wheelchair movements and athlete control options were examined in 27 national standard and 29 international standard players during entire wheelchair basketball matches. Between-group factorial analysis of variances identified that national players drove more forward (42.6 ± 6.8 vs. 35.4 ± 3.7%; effect size Cohen’s d (ES) = 1.48) and started more often driving forward (33.9 ± 2.6 vs. 31.8 ± 2.8; ES = 0.77) during a match while the mean activity duration for a single driving forward activity was longer (4.3 ± 0.9 vs. 3.7 ± 0.6 s; ES = 0.75) than for international players. Furthermore, national players performed fewer rotational movements (21.8 ± 4.0 vs. 28.9 ± 7.8%; ES = –1.30) and started less often with the rotational movements (35.0 ± 3.6 vs. 40.5 ± 5.5; ES = –1.21) while the mean activity duration for a single rotation activity was shorter (2.1 ± 0.3 vs. 2.3 ± 0.3 s; ES = –0.67) than for international players. Differences in mobility performance among guard, forward and centre players were minimal. The results should help wheelchair basketball coaches specify wheelchair-handling training techniques and means to optimise wheelchair-athlete configurations. 相似文献
66.
Joost P. Pluijms Rouwen Cañal-Bruland Marco J.M. Hoozemans Morris W. Van Beek Kaj Böcker Geert J.P. Savelsbergh 《Journal of sports sciences》2016,34(16):1588-1595
The aim of the current study was twofold: (1) to validate the use of action sport cameras for quantifying focus of visual attention in sailing and (2) to apply this method to examine whether an external focus of attention is associated with better performance in upwind sailing. To test the validity of this novel quantification method, we first calculated the agreement between gaze location measures and head orientation measures in 13 sailors sailing upwind during training regattas using a head mounted eye tracker. The results confirmed that for measuring visual focus of attention in upwind sailing, the agreement for the two measures was high (intraclass correlation coefficient (ICC) = 0.97) and the 95% limits of agreement were acceptable (between ?8.0% and 14.6%). In a next step, we quantified the focus of visual attention in sailing upwind as fast as possible by means of an action sport camera. We captured sailing performance, operationalised as boat speed in the direction of the wind, and environmental conditions using a GPS, compass and wind meter. Four trials, each lasting 1 min, were analysed for 15 sailors each, resulting in a total of 30 upwind speed trials on port tack and 30 upwind speed trials on starboard tack. The results revealed that in sailing – within constantly changing environments – the focus of attention is not a significant predictor for better upwind sailing performances. This implicates that neither external nor internal foci of attention was per se correlated with better performances. Rather, relatively large interindividual differences seem to indicate that different visual attention strategies can lead to similar performance outcomes. 相似文献
67.
Identification of a nonlinear dynamic biological model using the dominant parameter selection method
Ilya Ioslovich Marco Ivan Ramirez-Sosa Moran 《Journal of The Franklin Institute》2010,347(6):1001-1014
The identification of nonlinear models sometimes encounters problems because of the limited amount of available measurements in combination with a large number of uncertain model parameters to be identified. E.g., the determination of the chemical composition of a lettuce crop is a rather expensive procedure; thus the number of experimental measurements is limited. As a result, the number of parameters of the dynamic model that can be successively identified is also limited, and the subset of the parameters to be identified must be chosen in a reasonable way.Parameter estimation for an extended nonlinear three-state model for lettuce growth in greenhouses is presented in this paper. The varying structural nitrogen concentration and water contents are the new elements included in the model. The dominant parameter selection (DPS) method was used to select a suitable set of identifiable parameters. The resulting calibrated model predicts quite well the experimental data which also include observations with severe nitrogen stress. 相似文献
68.
Ralph Bathurst Marco van Gelderen 《Journal of Higher Education Policy & Management》2014,36(4):395-407
In this paper, we explore the work life of a scholar new to academia in her methods of leading informally. We discuss five vignettes that offer moments of learning and reflection, including reducing performance anxiety, privileging financial accountability, the rise of the virtual world, the impact of silence, and the potential for confrontation to strengthen working relationships. We offer suggestions as to how contemporary leaders may adapt to the freedom that artful action offers. 相似文献
69.
Joost P. Pluijms Rouwen Cañal-Bruland Marco J.M. Hoozemans Geert J. P. Savelsbergh 《Journal of sports sciences》2015,33(4):398-410
In search of key-performance predictors in sailing, we examined to what degree visual search, movement behaviour and boat control contribute to skilled performance while rounding the windward mark. To this end, we analysed 62 windward mark roundings sailed without opponents and 40 windward mark roundings sailed with opponents while competing in small regattas. Across conditions, results revealed that better performances were related to gazing more to the tangent point during the actual rounding. More specifically, in the condition without opponents, skilled performance was associated with gazing more outside the dinghy during the actual rounding, while in the condition with opponents, superior performance was related to gazing less outside the dinghy. With respect to movement behaviour, superior performance was associated with the release of the trimming lines close to rounding the mark. In addition, better performances were related to approaching the mark with little heel, yet heeling the boat more to the windward side when being close to the mark. Potential implications for practice are suggested for each phase of the windward mark rounding. 相似文献
70.
Gino Mirocle Crisci Mauro Francesco La Russa Marco Malagodi Silvestro Antonio Ruffolo 《Journal of Cultural Heritage》2010,11(3):304-308
This study is aimed at an assessment of the properties of two polymeric products applied to Norway spruce (Picea abies) and White poplar (Populus alba) wood species. It contributes to ongoing research experiments on the consolidating properties of two synthetic resins and their potential synergic action on wood, resulting from their different interaction with the substrate: Paraloid B72 and Regalrez 1126. Experiments were carried out on a series of samples of the two wood varieties. The consolidants were applied alone and one after the other, with one coat of Regalrez and then one of Paraloid. Porosity and variations in pore size distribution were ascertained by mercury intrusion porosimetry (MIP). Colorimetric and IR spectroscopic measurements were also taken before and after aging by solar radiation and freeze/thaw cycles, to verify the possible slowing of photodegradation of the treated wood and the consolidating resistance. Results confirm that both products penetrate the wood with a different behaviour. After double treatment with Regalrez + Paraloid, a significant advantage was observed in terms of mechanical resistance and pore size distribution, although no advantages as regards resistance to photo-oxidizing processes or colour changes were observed. 相似文献