892 resultados para fracture and deformation concepts


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Pós-graduação em Educação para a Ciência - FC

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This paper presents an assessment of an educational game for teaching the efficient use of electricity. Developed with Adobe Flash (R), it is a virtual board game where participants choose a car that starts the path and reaches the same final goal, going through a number of track steps defined in terms of a dice that each player rolls in turn. The car moves if the participant is able to correctly answer a question that is randomly generated by the software. The objective of the game is to answer questions related to energy efficiency promoting a healthy and attractive learning process for participants on concepts related to energy efficiency such as: the rational use of energy, the basic concepts of forms of energy generation, among others. The main objective of this paper is to assess the impact of the application of this virtual game in the teaching and learning process of high school students. Therefore, the game was applied in the discipline of physics in a class of junior high public school in the state of Sao Paulo. Initially, the class that had 43 students was divided into 10 groups of 4 students, and 1 group of 3 students. Each student group competed with one another. The idea was that each of them should indicate a student who was the representative of this group until only 4 group leaders were selected for the finals. At this stage, each student could interact with a group of up to ten students that acted as advisers. The adopted assessment process is based on the model proposed by Savi [7]. Then, at the end of the game, the students answered a prepared questionnaire based on the model proposed by Savi. According to Savi, although there are significant studies that show the importance of educational games for the process of cognitive development and learning concepts of students, there are few papers that present forms of assessing the potential of these resources. Thus, the assessment criteria proposed by Savi are based on the model of training evaluation by Kirkpatrick [3], taken as a reference to measure the efficiency of processes of continuing education courses for professionals. The authors assert that the metric of the evaluation proposed to assess the game is based on the first level of the model proposed by Kirkpatrick.

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In his work on human knowledge, Vygotsky reveals the second human nature, the one which is historical and cultural, due to people´s learning throughout life, through the mediation of others and the concrete conditions of life and education. In this eminently social process, the child grows into the intellectual life having the adult as a peer and learns human skills from this adult-child interaction. This means that, for working with abstract formulation, it is necessary understanding it as a complex, dynamic and functional act that is built by the insertion of individual performance into culture that is mediated by interaction with others. In this setting, each individual reaches knowledge through formal and non-formal learning that help on the formulation of scientific and everyday concepts. To make studies on the process of concept formation, Vygotsky adopted an experimental methodology based on the philosophical assumptions of Marxist theory of how mental processes occur, once he perceived these processes in a constantly changing and moving. Thus, the method called “Instrumental, Cultural and Historical” differed from conventional experimental studies focused on the performance of the task itself. The method adopted by Vygotsky was concerned with the process of concept formation and not only with fragmentary cutouts of cognitive processes. According to our study, the formation of the social nature of man develops from processes of appropriation and objectification of knowledge, which makes individual the historically constructed achievements by mankind, as, for example, types of sophisticated thinking, which requires the discussion of concept formation.

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This paper seeks to relate issues to the formation of the reader and school routines that directly interfere in the way responsible for the mediation work there included the act of reading, and also reflect on the pedagogical implications arising therefrom. The resumption of data generated in research developed in the years 2007 to 2010 shows that both the classroom as the school library has been constituted as ambiance suitable for training the child reader. Theoretical and methodological concepts related to child development in the act of reading is presented by discussing access to books and children’s literature led to the formation of the child reader, linking them to the old and new reading technologies.

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The objective of this is study is to point inter-institutional partnerships in Information Science formed through co-authorship network. More specifically, we calculate indicators of centrality degree, betweenness centrality and closeness centrality, and analyze the relationships between the grades attributed by CAPES - Coordination for the Improvement of Higher Education Personnel - to the institutions and the indicators on the network, checking whether there is proximity and similarity between network indicators and CAPES's grades. Our corpus consisted of all articles published in the four journals in the field of Information Science in Brazil, with regular publications, based in SciVerse Scopus, for the 2010- 2012 period. We retrieved 237 articles, 58 co-authored, with 117 participant institutions. We conducted the analysis of relations between institutions with greater grades by CAPES and the network through centrality indicators. It was concluded that these network indicators and CAPES concepts are articulated, harmonizing these two categories of indicators.

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The information retrieval process involves subjective, imprecise and vague concepts, such as "information need", "relevance", and the very concept of "information". The main information retrieval models treat these concepts accurately, represented by a single numerical value. The fuzzy logic, while operating with the uncertainty of natural phenomena in a systematic and rigorous manner, represents a promising alternative to solve some problems related to information retrieval. This paper presents the fuzzy logic and some examples of its use in information retrieval systems (IRS).

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At first, this paper presents the epistemological and theoretical bases that support the inclusion of an operational concept for the findability of information in the field of Information Science. In a second moment, it defines the key attributes and recommendations for the findability of information, with a view to their understanding in a practical perspective, from the epistemological and theoretical support presented. From a theoretical, exploratory, bibliographic and documentary study, the results reveal that epistemologically the findability of information fits in Information Science in post-custodial paradigm that focuses on access to information and is significantly influenced by Information and Communication Technologies. The theoretical conclusions of this concept focus on the evolution of the Web and from the perspective of the dimensions of language, where there is as pragmatic trend, as technological development that combines the actions taken by informational and institutional individuals in digital information environments. Given that these actions turn enable or not the findability of information, these individuals can be understood as mediators. Therefore, the concept of infocommunicational mediation is the basis for the findability of information. For its application in digital information environments, were defined attributes and guidelines which should be considered in the context of Information Architecture. The attributes characterizing the concept and guidelines point at practical actions for the design and for evaluation of the findability of information. Epistemological, theoretical and practical concepts addressed underpin the called operative concept in information science and should be further explored in this scientific field.

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Abstract: The civil war in the former Yugoslavia (1991 - 1995) had a strong ethnicreligious component. In an attempt to maintain the cohesion of an artificially created state post-first World War, identities were sought and accepted - and institutionalized - the differences between the various peoples that constituted the "land of the South Slavs". From the 1980s the differences were highlighted during the war and taken to the extreme, especially in the territories of Croatia and BosniaHerzegovina. From literature and the author's personal experience and using concepts of culture, ethnicity, identity, difference, belonging, nation and state, the text shows how the ethnic-religious differences were used during the civil war in Yugoslavia to claim possession of territories, strengthen discourse of the impossibility of coexistence, overvalue potential threats and fear and justify the perpetration of crimes against humanity.

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This text has the following aims: a) to discuss Gramsci and Horkheimer’s epistemological status, joined authors in an theoretical approach known as Critical Theory of International Relations; b) to draft an analysis in order to show the mentioned and joined authors’ different epistemological statuses in the theoretical approach in discussion; c) to begin a reflection pointing the absence of accuracy in this approach - whose beginning happened with Canadian political scientist Robert W. Cox – due to joining different epistemological statuses and ignoring the theoretical consequences put by respective central Gramsci and Horkheimer’s concepts: hegemony and emancipation.

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Studies on activity and learning in the cultural-historical approach involves, most cases, the discussions on the higher psychological functions and areas of proximal and real development. Having said that our objective in this paper is to make a discussion about the activity of study and the concepts that involve the teaching of the mother language from the Historic-Cultural theory. We point this way, the importance of this approach in studies on literacy and knowledge of the activity of study as central to the creation of humanizing need of reading and writing, starting from the principle that the creation of needs requires the production of discourses, which have their materiality in the text.

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Busca-se determinar as características da representação da natureza no romance francês do século XIX, analisando-se Paul et Virginie de Bernardin de Saint-Pierre, Les travailleurs de la mer de Victor Hugo e L’Ève future de Villiers de l’Isle-Adam, por meio da teoria sócio-crítica e do embate com o texto. Na primeira parte, faz-se um retrospecto da representação nas artes e na literatura, destacando-se as concepções de Aristóteles e as do Romantismo. Apresenta-se também um panorama das concepções da natureza no tempo e no espaço e reflete-se sobre as relações do homem com o mundo natural, bem como sobre as teorias a elas referentes no âmbito da história, da pintura e da literatura. Na segunda parte, analisam-se os três romances escolhidos, buscando-se neles os modos e os sentidos da representação literária da natureza. Conclui-se pela existência, nas três obras estudadas, de uma atitude ambígua do homem diante da natureza, que havia sido anteriormente detectada na história. Embora diferenciadas entre si, sob alguns aspectos, as representações da natureza no corpus estudado demonstram o registro, no universo literário, de marcas do contexto histórico, político e social em que os três romances foram escritos, publicados e usufruidos.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Horizontal root fractures (HRF) usually affect the anterior teeth as a result of trauma, and generally heal spontaneously, depending on the vitality of the pulp. Diagnosis based on clinical findings, sensitivity tests, and radiographic examination is important to determine the presence of a root fracture and to prevent a root fracture from passing unnoticed. Cone-beam computed tomography (CBCT) has been used successfully for diagnosis and prognosis imaging of root fractures and has proved to be superior to other radiographic methods. This study reports two cases of dental trauma caused by a collision and a sports accident. The patients suffered horizontal root fractures in the maxillary left central incisor and in the mandibular left central incisor. The diagnosis of root fracture was confirmed by cone-beam computed tomography (CBCT) images, which also demonstrated spontaneous healing of the fracture line. The repair occurred by interposition of connective tissue in the former case and by interposition of bone and connective tissue in the latter case. The final diagnoses of both cases were based on CBCT images, indicating the importance of a CBCT examination to reach a firm diagnosis and to follow the healing process of root fracture cases, avoiding unnecessary radical endodontic treatment.