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111.
This work presents the results of the investigation carried out on a group of terracotta sculptures (modelli) (sixteenth to eighteenth century) belonging to the extraordinary collection of Palazzo Venezia in Rome. The study, the diagnostic analysis, and the conservation work, were possible thanks to the grant supplied by the Getty Foundation of Los Angeles and by the bank Intesa San Paolo. The terracotta modelli had a practical function as they were of great use as sketches to the creation of the final masterpieces or as models for restoration. As a consequence, the terracotta models allow reconstructing the creative process of artists and restorers, fundamental to outlining the ancient workshop production. X-ray fluorescence spectroscopy, micro-stratigraphic investigation, Fourier transform infrared spectroscopy, and micro-Raman spectroscopy were chosen as useful techniques to study the morphology and composition of the surface-painted layers. Usually the surfaces were painted in order to simulate the materials of the sculpture for which the model was created, for example lead white was used to obtain a white surface simulating marble. But, often the models were re-painted to make them more attractive for the antique trade. So, several pigments have been found on the surfaces such as zinc white, Prussian blue, chrome yellow, and mono-azo pigment. In some cases, the characterization of the surface paintings was particularly important to the final decision about removing or leaving the surface paint in place.  相似文献   
112.
113.
There is more to schools than buildings and a collection of hired teachers. They develop values, transmit aspirations and require certain sets of beliefs. Unless schools convince students of the importance of what they teach, their chances of success are very slim. In a society which puts much value on university diplomas, convincing students that plumbing is the best occupation in the world may prove to be well-nigh possible. The most successful vocational programmes tend to be those that are operated either by systems dedicated to vocational education or by specialized schools within the regular system. Many planners will insist on solutions that lead to some degree of physical segregation. But given the usually high correlation between social class origin and school achievement, it is undeniable that we end up with a system that segregates the poor in courses of study that lead to lower-level occupations.
Zusammenfassung Schulen sind mehr als nur Gebäude und eine Ansammlung angestellter Lehrer. Sie entwickeln Werte, vermitteln Hoffnungen und bauen auf bestimmten Glaubenssätzen auf. Solange Schulen ihre Schüler nicht von der Wichtigkeit dessen, was unterrichtet wird, überzeugen, sind ihre Aussichten auf Erfolg gering. In einer Gesellschaft, die einem Universitätsdiplom einen hohen Stellenwert einräumt, dürfte es fast unmöglich sein, Schüler davon zu überzeugen, daß Klempner der beste Beruf der Welt ist. Die erfolgreichsten Berufsprogramme sind meistens die, die von den der Berufsausbilding verpflichteten Systeme oder von Fachschulen innerhalb des regulären Systems durchgeführt werden. Zahlreiche Bildungsplaner werden auf Lösungen bestehen, die zu einem gewissen Grad von Segregation führen. Geht man aber von der im allgemeinen engen Verknüpfung zwischen sozialer Herkunft und Schulleistung aus, so kann nicht geleugnet werden, daß dies zu einem System führt, das die Minderbemittelten in Ausbildungsvorgänge einweist, die sie nur auf einfache Berufe vorbereiten.

Résumé Les écoles sont bien plus que de simples bâtiments et une équipe d'enseignants. Elles développent des valeurs, transmettent des aspirations et requièrent certains modèles de croyances. Si les écoles ne convainquent pas les élèves de l'importance de leur enseignement, leurs chances de succès sont très minces. Dans une société qui attache de la valeur aux diplômes universitaires, il semble pratiquement impossible de persuader les apprenants que le métier de plombier est le meilleur du monde. Les programmes d'enseignement professionel les plus efficaces semblent être ceux qui procèdent soit par des systèmes spécialisés de formation professionelle soit par des écoles spécialisées intégrées dans le système formel. Les spécialistes de la planification insisteront sur les solutions qui conduisent à un certain degré de séparation physique. Cependant, étant donné la corrélation habituellement élevée entre l'origine sociale et les acquis scolaires, il est indéniable que nous aboutirons à un système qui isolera le pauvre dans des cours qui mènent à des métiers de bas niveau.
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114.
Several student and course characteristics were examined in relation to student ratings of instruction. Students at a major Canadian university completed the Universal Student Ratings of Instruction instrument at the end of every course over a three‐year period, providing 371,131 student ratings. Analyses of between‐group differences indicate that students who attend class often and expect high grades provide high ratings of their instructors (p < .001). In addition, lab‐type courses receive higher ratings than lectures or tutorials, and courses in the social sciences receive higher ratings than courses in the natural sciences (p < .001). Regression analyses indicated, however, that student and course characteristics explain little variance in student ratings of their instructors (<7%). It is concluded that student ratings are more related to teaching instruction and behavior of the instructor than to these variables.  相似文献   
115.
The present work is an approach to study the Cuban model for educating the elderly, and its aim is to describe the main features of the experience developed by this country. The University of the Third Age is more than three decades old in Latin America, but none of the countries in the region can show a state educational policy regulating and orienting its development. Cuba is the only country that has designed an educational program for older adults at a national level. The model is the most outstanding one among the rest of the countries in the American continent. This research is based on documentary analysis and interviews held with leaders and managers of the Chair for Older Adults, who were located in different towns of Cuba. Results led to a reconstruction of a set of dimensions of the Cuban model, such as the process of institutionalization, syllabus organization, the process of expansion and universalization, and educators' training strategies for elders. Finally, bearing in mind the features of Cuban political organization and gerontological positions, it was possible to draw the future evolution and challenges faced by the Cuban model for educating older adults.  相似文献   
116.
This paper investigates the impact of referee reliability on the quality and efficiency of peer review. We modeled peer review as a process based on knowledge asymmetries and subject to evaluation bias. We tested various levels of referee reliability and different mechanisms of reviewing effort distribution among agents. We also tested different scientific community structures (cohesive vs. parochial) and competitive science environments (high vs. low competition). We found that referee behavior drastically affects peer review and an equal distribution of the reviewing effort is beneficial only if the scientific community is homogeneous and referee reliability is the rule. We also found that the Matthew effect in the allocation of resources and credit is inherent to a ‘winner takes all’ well functioning science system, more than a consequence of evaluation bias.  相似文献   
117.
The purpose of this study was to determine differences in hamstrings-to-quadriceps (H/Q) peak torque ratios evaluated at different angular velocities between men and women who participate in judo, handball or soccer. A total of 166 athletes, including 58 judokas (26 females and 32 males), 39 handball players (22 females and 17 males), and 69 soccer players (17 females and 52 males), were evaluated using an isokinetic dynamometer. The H/Q isokinetic peak torque ratios were calculated at angular velocities of 1.05 rad · s?1 and 5.23 rad · s?1. In the analysis by gender, female soccer players produced lower H/Q peak torque ratios at 1.05 rad · s?1 than males involved in the same sport. However, when H/Q peak torque ratio was assessed at 5.23 rad · s?1, there were no significant differences between the sexes. In the analysis by sport, there were no differences among females at 1.05 rad · s?1. In contrast, male soccer players had significantly higher H/Q peak torque ratios than judokas (66 ± 12% vs. 57 ± 14%, respectively). Female handball players produced significantly lower peak torque ratios at 5.23 rad · s?1 than judokas or soccer players, whereas males presented no ratio differences among sports At 5.23 rad · s?1. In the analysis by velocity, women's muscular ratios assessed at 1.05 rad · s?1 were significantly lower than at 5.23 rad · s?1 for all sports; among men, only judokas presented lower ratios at 1.05 rad · s?1 than at 5.23 rad · s?1. The present results suggest that sport modality and angular velocity influence the isokinetic strength profiles of men and women.  相似文献   
118.
This paper describes a scientific approach aimed at studying the ancient part of Palazzo d’Accursio (Bologna, Italy), a masonry building which is part of the Italian cultural heritage. Laser scanning and the inspection of digital images are used to detect traces of restoration works and other interesting features related to both architectural marks and natural or anthropic events. One of the main elements of the method is the analysis of residual maps, obtained by computing the differences between the point coordinates of the façade and reference fit planes. The obtained results, based on both radiometric and geometrical analysis, are used to provide a reasonable hypothesis as to the original configuration of the studied building, while taking into account the available historical information about the constructive phases of the building.  相似文献   
119.
The importance of community learning in effecting social change towards ecological sustainability has been recognised for some time. More recently, the use of Information and Communication Technology (ICT) tools to promote socio-ecological sustainability has been shown to have potential in community education for sustainable development (ESD). The effective design and use of technology for community learning implies an understanding of a range of cross-dimensional factors including: socio-cultural characteristics and needs of the target audience; considerations of available and culturally responsive types of technology; and non-formal pedagogical ESD strategies for community empowerment. In addition, both technology itself and social communities are dynamically evolving and complex entities. This article presents a case study which evaluated the potential of ICT for promoting ecological literacy and action competence amongst community members in southern Chile. The case study addressed the ecological deterioration of a lake, which is having deep social, economic, recreational and cultural implications locally. The authors’ research involved developing a theoretical framework for the design, implementation and use of ICT for community learning for sustainability. The framework was based on key ideas from ESD, ICT and community education, and was underpinned by a systems thinking approach to account for the dynamism and complexity of such settings. Activity theory provided a frame to address overarching socio-cultural elements when using technology as a mediating tool for community learning. The authors’ findings suggest that the use of an ICT tool, such as a website, can enhance ecological literacy in relation to a local socio-ecological issue.  相似文献   
120.
Jump performance is considered an important factor in many sports. Thus, strategies such as weightlifting (WL) exercises, traditional resistance training (TRT) and plyometric training (PT) are effective at improving jump performance. However, it is not entirely clear which of these strategies can enable greater improvements on jump height. Thus, the purpose of the meta-analysis was to compare the improvements on countermovement jump (CMJ) performance between training methods which focus on WL exercises, TRT, and PT. Seven studies were included, of which one study performed both comparison. Therefore, four studies comparing WL exercises vs. TRT (total n = 78) and four studies comparing WL exercises vs. PT (total n = 76). The results showed greater improvements on CMJ performance for WL exercises compared to TRT (ESdiff: 0.72 ± 0.23; 95%CI: 0.26, 1.19; P = 0.002; Δ % = 7.5 and 2.1, respectively). The comparison between WL exercises vs. PT revealed no significant difference between protocols (ESdiff: 0.15 ± 0.23; 95%CI: ?0.30, 0.60; P = 0.518; Δ % = 8.8 and 8.1, respectively). In conclusion, WL exercises are superior to promote positive changes on CMJ performance compared to TRT; however, WL exercises and PT are equally effective at improving CMJ performance.  相似文献   
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