排序方式： 共有116条查询结果，搜索用时 31 毫秒
81.
Margaret Kirkwood Bob Sharp Giuseppe de Vito & Myra A Nimmo 《British journal of educational technology : journal of the Council for Educational Technology》2002,33(2):159-172
Traditional approaches to teaching exercise physiology are costly in terms of staff time and consumable expenses. Ethical considerations, large student numbers and availability of technical expertise magnify the delivery problems. In an attempt to overcome these problems, a CD-ROM version of a basic course in exercise physiology was designed and delivered to a group of undergraduate sport and exercise science students. It simulated five tests of aerobic endurance which are traditionally taught using laboratory methods. A controlled experiment was conducted to compare the two delivery methods, as part of an independent, formative evaluation. Although there were equal knowledge gains and the CD-ROM design and content were well rated by students who used it, this approach has engendered less student interaction, commitment to wider reading and in-depth understanding. Tutorials and other approaches designed to promote more active learning are now being introduced to accompany the use of the CD-ROM. 相似文献
82.
Giuseppe Carlo Marano 《浙江大学学报(A卷英文版)》2008,9(1):15-25
Based on a multiobjective approach whose objective function （OF） vector collects stochastic reliability performance and structural cost indices, a structural optimization criterion for mechanical systems subject to random vibrations is presented for supporting engineer＇s design. This criterion differs from the most commonly used conventional optimum design criterion for random vibrating structure, which is based on minimizing displacement or acceleration variance of main structure responses, without considering explicitly required performances against failure. The proposed criterion can properly take into account the design-reliability required performances, and it becomes a more efficient support for structural engineering decision making. The multiobjective optimum （MOO） design of a tuned mass damper （TMD） has been developed in a typical seismic design problem, to control structural vibration induced on a multi-storey building structure excited by nonstationary base acceleration random process A numerical example for a three-storey building is developed and a sensitivity analysis is carried out. The results are shown in a useful manner for TMD design decision support. 相似文献
83.
This paper investigates some of the biological constraints that shape the process of literacy acquisition. It explores the possibility of isolating processing components of reading which correspond to computational units of equivalent size in the neural architecture. After reviewing and evaluating the current approaches to the biology of literacy acquisition, the paper considers three interconnected topics: (a) developmental dissociations, (b) early stages of literacy acquisition (in a transparent orthography), and (c) effects of remedial intervention for children with reading disorders. Developmental dissociations between reading and severe mental retardation, motor impairment, congenital anarthria and inaccuracy in phonemic awareness tasks reveal the functional independence of the reading processes. The early stages of literacy acquisition in a transparent orthography show a very steep increase in word and non-word reading accuracy; a speed that could hardly be accounted for by unconstrained learning. Finally, rehabilitation treatments of reading disorders either produce no specific effects, or marginal improvements in reading accuracy, which fade away in the long term. Concurrently, these data suggest that the process of literacy acquisition is largely constrained by a specific biological architecture which mimics the functional properties of a modular system. It is speculated that the core component of reading is a metaphonological parser, designed to perform automatic cross-modal associations between visual and sublexical units, according to the paradigms set up by any orthographic system. The phylogenetic implications of the specificity hypothesis are discussed. 相似文献
84.
Passiatore Ylenia Pirchio Sabine Carrus Giuseppe Maricchiolo Fridanna Fiorilli Caterina Arcidiacono Francesco 《European Journal of Psychology of Education - EJPE》2019,34(1):209-224
European Journal of Psychology of Education - This is an introductory paper to the special section “Multilingual learning and social inclusion of children: The development of educational... 相似文献
85.
Pirchio Sabine Passiatore Ylenia Carrus Giuseppe Taeschner Traute 《European Journal of Psychology of Education - EJPE》2019,34(1):225-238
European Journal of Psychology of Education - The increasing multicultural character of European society and the growing presence of children from immigrant families in European schools represent a... 相似文献
86.
Antonio Serra Daniela Manno Emanuela Filippo Rosa Vitale Giuseppe Sarcinelli Lucio Calcagnile Gianluca Quarta Giuseppe Giovannelli Benedetto Bozzini Aldo Siciliano 《Journal of Cultural Heritage》2010,11(2):233-238
Out of the staters collection of the National Archaeological Museum of Taranto, during the full examination of about one hundred coins minted by the Greek colony of Taras between the V century BC and the III century BC, our attention has been devoted to a lead coin, which has been regarded for many years as a genuine silver coin. This artifact, entry number 13 in the inventory list for the Parabita hoard, has been studied with the combined use of surface and micro-analytical techniques (SEM, EDX, PIXE, XRD). The joint use of different analytical techniques allowed us to obtain information about the morphology, the structure and the chemical composition of the analysed coin, that revealed a lead core coated with a bi-layer of copper and silver. 相似文献
87.
Cecilia Sanna Armida Sodo Giuseppe Laguzzi Giovanna Mancini Marina Bicchieri 《Journal of Cultural Heritage》2009,10(3):356-361
The need to preserve cultural heritage on paper requires the setting up of methods and treatments that can be applied to original documents. The cellulose main degradation processes are hydrolysis and oxidation. Only the first one has been widely investigated. The Istituto Centrale per la Patologia del Libro (ICPL) focused its attention on oxidation phenomena and studied a particular class of reducing agents, namely the borane-amine complexes. During the investigation it was found that the borane tert-butylamine complex, besides being the most promising reducing agent, was also able to react with carboxylic functions. In the present study 1H and 13C NMR, Pulsed field gradient NMR spectroscopy as well as Raman spectroscopy were used as analytical tools to disclose the mechanism of the interaction between the borane tert-butylamine complex and the carboxylic functions. Given the complexity of the paper/environment interactions and the subsequent degradation phenomena, we worked on simplified models based on small carbohydrate molecules in order to reproduce the behavior of degraded paper after reductive restoration. Modified D-glucose and D-cellobiose were used in this first step in order to set up the analytical methods before approaching more complex systems such as microcrystalline cellulose and paper. Our results give the experimental evidence that borane tert-butylamine complex is also able to neutralize acidic functions. This finding has important perspectives in paper restoration. 相似文献
88.
Teresa Cerchiara Giuseppe Chidichimo Maria Caterina Gallucci Rita Ferraro Danilo Vuono Alfonso Nastro 《Journal of Cultural Heritage》2009,10(3):396-402
One of the problems in the field of cultural heritage is the degradation of artworks and especially paintings. They appear very sensitive to environmental conditions. In this work, Spanish broom canvas is proposed as a novel painting support. In order to assess the deterioration properties of this new type of canvas, three degradation processes (exposure to wet atmosphere, to acidic attack and to UV light) were simulated and investigated. The deterioration state of the samples was monitored with Infrared Spectroscopy (FT-IR) and Thermogravimetric Analysis (TGA). The structure of the canvas was also analyzed by Scanning Electron Microscopy (SEM). These techniques were successfully applied to study the occurrence significant changes of samples. The exposure to acidic and UV attack produced deep changes on the samples (only on the canvas surface in the case of UV light), while no significant effect was identified on the sample after the exposure to wet atmosphere. The results obtained from Spanish broom canvas are reported in comparison to flax canvas. 相似文献
89.
Doping in sports is commonplace. The prevention of harm to the athlete, the guarantee of fair play, and a level playing field for all competitors are the basis of the current anti-doping strategies. As healthcare systems are forced to allocate increasing resources to prevent and treat the prevailing pathologies worldwide, funding for anti-doping campaigns will necessarily be restricted. Ideally, additional resources should be devoted to increasing the number of athletes tested, the panels of tests used, and the frequency of out-of-competition controls. Since doping prevention cannot be considered a priority for most healthcare systems, such an approach is unaffordable and an alternative framework should be devised, focused primarily on harm reduction rather than fair play. The identification of abnormal deviations from reference values, regardless of pathological or artificial causes, would allow the athlete to be followed and tested using conventional laboratory tests, which are affordable to governments and healthcare systems and available to clinical laboratories. Although this strategy would not detect cheating, it would safeguard athletes' health. 相似文献
90.