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121.
Rafael Capurro 《International Information and Library Review》2013,45(3-4):257-276
The paper deals with theoretical and practical challenges of the information society in the 21st century. In the first part an overview of past and current activities in the field of information ethics at UNESCO is provided (Virtual Forum, Second International Congress on Information Ethics, Observatory on the information Society). The second part presents a historical interpretation of the development of modern information society with the emerging networked world society with its characteristics of interactivity and decentralization. The diversity of moral norms and traditions within this global medium gives rise to the question concerning an Internet-morality as a challenge to ethical thinking. The third part deals with the question of our identity within the framework of a digital ontology. The concepts of “net” and “information” are analysed. A future information ethics is based on a digital ontology. Living in the information age is considered from the point of view of both an ethical imperative and the art of living. 相似文献
122.
ResumenEn este trabajo se abordan cuestiones básicas relativas a la manipulación y retención de la información en la Memoria de Trabajo y su vinculación con la adquisición lectora desde la perspectiva de los modelos interactivos de procesamiento de la información. Se plantean cuatro experimentos aplicados a niños de nivel lector alto y bajo de primero, tercero y quinto de EGB, respectivamente. Los resultados indican que sólo existen diferencias significativas entre grupos de distinto nivel lector en aquellas tareas con mayor implicaión de componentes funcionales, mientras que las diferencias más importantes entre cursos se dan entre primero y tercero, tanto para componentes estructurales como funcionales. 相似文献
123.
André Koscianski Rafael João Ribeiro Sani Carvalho Rutz da Silva 《Research in Science & Technological Education》2013,31(3):255-269
Background : Advance organizers are instructional materials that help students use previous knowledge to make links with new information. Short animation movies are a possible format and are well suited for physics, as they can portray dynamic phenomena and represent abstract concepts. Purpose : The study aimed to determine guidelines for the construction of an instructional short animation movie, with the role of an advance organizer. A film was created in order to evaluate the effectiveness of the approach, making part of a physics lesson and concerning the subject ‘moment of a force’. Sample : The study took place in a Brazilian school in the city of Arapoti, in the south region of the country. Thirty-eight students participated, having an average age of 16 and following the third year of high school. Design and methods : Criteria drawn from a literature review directed the construction of the movie and the lesson. Data were collected using pre- and post-tests; registers of oral comments were also done during the class. The post-test included open-ended questions, allowing students to write remarks concerning the lesson and the animation. Conclusions : The article describes steps and guidelines to orient the process of designing an animation movie with the role of advance organizer. Data indicated that the movie facilitated the construction of links between pre-existent knowledge and the new information presented in the lesson. The proposed methodology can be considered a valid framework to derive similar approaches. 相似文献
124.
Enrique Fernández-Macías José-Ignacio Antón Francisco-Javier Braña Rafael Muñoz De Bustillo 《European Journal of Education》2013,48(1):150-164
Spain has one of the highest levels of early school leaving and educational failure of the European Union. The purpose of this paper is to analyse the anatomy of early school leaving in Spain and its characteristics. In order to do so, in the first part we discuss the measurement problems related with this concept and the evolution of drop-out rates in Spain. We argue that the published figures of early school leaving slightly underestimate the phenomenon, and discuss the impact of the increase in immigration rates on the level of educational failure and its very unequal distribution in terms of gender. In a second part, using data from the Labour Force Surveys of 2000 and 2007, we explore the factors behind educational failure by means of a logistic regression. The results of this model confirm the explanatory power of social reproduction hypotheses, but also show that there are important aspects of the patterns and recent evolution of early school leaving which cannot be explained by a single theoretical approach. 相似文献
125.
Ana Lilia Laureano-Cruces Javier Ramírez-Rodríguez Martha Mora-Torres Fernando de Arriaga Rafael Escarela-Pérez 《Interactive Learning Environments》2013,21(1):11-38
In this paper behavior during the teaching–learning process is modeled by means of a fuzzy cognitive map. The elements used to model such behavior are part of a generic didactic model, which emphasizes the use of cognitive and operative strategies as part of the student–tutor interaction. Examples of possible initial scenarios for the teaching–learning process are developed, along with the results provided by the model. 相似文献
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128.
Turner Frederick C.; Cilley Marita Carballo de 《Int. Journal of Public Opinion Research》1989,1(4):279-293
Survey research from the larger cities of Argentina during the1960s and the 1980s demonstrates a consistent level of antagonismtoward the United States by at least a fifth of urban Argentines.Hostility increased when the United States sided against Argentinain the Malvinas (Falklands) War of 1982, but it declined from1983 to 1988 under the conciliatory policies adopted by thegovernments of Raúl Alfonsín and Ronald Reagan.Asking identical questions of urban residents in Brazil indicatesstrikingly similar patterns of attitude. Antagonism tends tofocus upon specific elements of United States government policyin Latin America, while little hostility is expressed towardthe people of the United States. In contrast to foreign policyinitiatives, elements of the culture, the political freedoms,and the economic and educational opportunities of the UnitedStates are clearly admired in Argentina. 相似文献
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130.
Christiane de Souza Guerino Macedo Rafael Chagas Vicente Mauricio Donini Cesário 《Journal of sports sciences》2016,34(4):348-357
The purpose of this study was to evaluate the effects of cold-water immersion on the electromyographic (EMG) response of the lower limb and balance during unipodal jump landing. The evaluation comprised 40 individuals (20 basketball players and 20 non-athletes). The EMG response in the lateral gastrocnemius, tibialis anterior, fibular longus, rectus femoris, hamstring and gluteus medius; amplitude and mean speed of the centre of pressure, flight time and ground reaction force (GRF) were analysed. All volunteers remained for 20 min with their ankle immersed in cold-water, and were re-evaluated immediately post and after 10, 20 and 30 min of reheating. The Shapiro–Wilk test, Friedman test and Dunn’s post test (P < 0.05) were used. The EMG response values decreased for the lateral gastrocnemius, tibialis anterior, fibular longus and rectus femoris of both athletes and non-athletes (P < 0.05). The comparison between the groups showed that the EMG response was lower for the athletes. Lower jump flight time and GRF, greater amplitude and mean speed of centre of pressure were predominant in the athletes. Cold-water immersion decreased the EMG activity of the lower limb, flight time and GRF and increased the amplitude and mean speed of centre of pressure. 相似文献