718 resultados para Unconventional Superconductivity
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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The concept of resilience is often situated in a dominant discourse that reflects medical and developmentalist epistemology, in Western models, with the ideology of white people, and middle class hegemonic norms. Behavior that falls outside of the normal, or what is socially acceptable, is associated with riskiness and tacitly if not explicitly labeled as pathological, and then, not resilient. However, the context of social injustice of many young people at-risk can have drastic effects on them. When we offer institutions such as schools that do not understand their needs, they may refuse our services and some of them may engage in antisocial activities, since they are looking for personal validation, pathways to recognize themselves, and places and organizations that contribute to the building of their social identity. This paper analyses how the denial of support and resources for the wellbeing of young people can lead them to situations that are socially unacceptable, such as sexual exploitation and drug trafficking. The main argument is that these activities, in the absence of conventional mechanisms, may bring some benefit to the subjects. Benefits may be in material conditions, though strongly marked by issues of social inequality; or subjective, in gaining relationships with people outside the normative places and institutions for young people. Unconventional circumstances produce unconventional attitudes that are expressed in alternative forms of resilience.
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This work offers an overview about didactic reflections in the introduction of the electrical field concept in Physics Teaching activities aimed to the High School by means of a teaching methodology based in a low cost experiment (FERREIRA E RAMOS, 2008). We analyzed the particular use of an experiment named electrostatic vector and its use in the teaching of the line force ideas, proposed by Faraday in 19th century. In the frame of this work we analyzed how this unconventional approach differs of the methodology generally presented in the didactic textbooks. We discussed that the use of low cost experiments, will not cause the student to learn, but the work of the teacher, offering an interaction between the student and the electrostatic vector, play an important role in the classroom
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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This paper deals with hypersegmentation of words that are characterized by the unconventional employment of a graphical boundary (using a white space or hyphen) within the limits of the word, as in "em bora" (“although”, using a white space), and "chama-da" (“called”, using the hyphen). In a study conducted on these data, we identified motivations arising not only from their literate nature but also from the morphosyntactic and prosodic information. We showed that there are linguistic features recurrent in these registers of word boundaries, based on the analysis of texts produced by the students who attended the last four years of elementary school in a public school in São Paulo. In this paper, we advance on this study by selecting data whose characteristics do not match those which were recurrent. We will argue that the unconventional presence of boundary within the written word limits may be interpreted as representing prosodic configurations (of intonation and rhythm nature) which contribute to the construction of the relation of meanings in the text.
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This paper analyzes unconventional segmentation of word found in texts of the sixth grade of Elementary School. Through quantitative and qualitative analysis, we describe the prosodic characteristics that may be motivated the hyper and hippossegmentation of words found in 27,4% of 606 investigated texts. We identified a tendency toward a more text with hippossegmentation than hypersegmentation, characteristic similar to what is reported about children’s text. Taking into account the theoretical framework of Prosodic Phonology, we argue about the relevance of prosodic word and clitic group in the description of the regularities observed in data of unconventional segmentation of word. We note that (i) in cases of hipposegmentation, it predominates the hollow of a clitic followed by a phonological word, (ii) in cases of hypersegmentation, it predominates a segmentation of a prosodic word into a clitic group. We present evidences to be the spelling of clitic elements a challenge to students analyzed. By investigating in the grammatical class that owned the clitics spelled unconventionally, we verified that they are prepositions (“em, de, com”) and pronouns (“me, lhe, lo”), a characteristic that particularize these data in relation to data from students in the early stage of language acquisition.
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This paper deals with unconventional segmentations of words in texts produced by students of the last four years of elementary school. The main hypothesis is that these data allow us to observe the characteristics of written and spoken utterances. Through analysis of data on prosodic constituents, we argue that students deal with (conflicting) hypotheses on the organization of unstressed syllables into prosodic constituents: metric feet, prosodic word and clitic group. We found evidence that unconventional spellings have their main motivation in the difficulty of students to assign the status of written word to grammatical items that are prosodic clitics.
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Pós-graduação em Agronomia (Horticultura) - FCA
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Ciência dos Materiais - FEIS
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Pós-graduação em Matemática em Rede Nacional - IBILCE
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Pós-graduação em Ciência dos Materiais - FEIS
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The resistive-type superconducting fault current limiters (RSFCL) prototypes using YBCO-coated conductors have shown current limitation for medium voltage class applications for acting time up to 80 ms. By connecting an air-core reactor in parallel with the RSFCL, thus making an hybrid current limiter, one can extend the acting time for up to 1 s. In this work, we report the performance of a hybrid current limiter subjected to an AC peak fault current of 2 kA during 1 s for which within the first 80 ms the SFCL limits the current concurrently with the air-core reactor, and for the remaining 920 ms, only the air-core reactor limits the current. In order to evaluate the actual conditions for subsequent reconnection of RSFCL to the power grid, the hybrid fault current limiter was tested varying the time interval for recovery from 900 ms and 1.2 s, followed again by the concurrent operation of the hybrid limiter during 1 s (SFCL during 80 ms). From this evaluation test, the recovery time can be measured and compared using the voltage peak generated in superconducting module from the first and second fault test. The recovery time was also determined through the pulsed current method (PCM) on short-length sample test. The results showed that the fault current was limited from 1.9 kA down to 514 A after 1 cycle of 60 Hz frequency, with recovery time lower than 1.2 s for two subsequent fault current tests.