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Search Results: 1 - 10 of 125620 matches for " CARLOS FERNANDES DA SILVA "
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Programa de interven o em contexto educativo: dispositivo electrónico de avalia o da descodifica o fonética de aprendentes de Português Língua Segunda
Sandra Figueiredo,Carlos Fernandes da Silva
Revista Portuguesa de Educa??o , 2012,
Abstract: The verbal behaviour is achieved because, on the one hand, there is a system of principles and conditions, which are considered as universals for all the human languages, supported by the biological need, but, on the other hand, those elements are part of the dynamic relation of events which constitutes the individual's context. Those events are not only the brain structures (mentalist perspective), but also the elements that generate the stimuli context to be discriminated which must be called 'environment' (functional perspective). After a theoretical revision of concepts and a perspective about phonetic decoding processes, results obtained by the set of tests developed for this study will be reported. Moreover some discussion will focus specifically on the achievement of second language learners regarding the segmentation (spelling task) and minimal pairs judgment tests.
Evaluation of Impairment Caused by MPEG Video Frame Loss  [PDF]
Carlos Alexandre Gouvea da Silva, Guilherme Fernandes de Souza Miguel, Jo?o Guilherme Sauer, Carlos Marcelo Pedroso
Engineering (ENG) , 2017, DOI: 10.4236/eng.2017.95029
Abstract: This article presents a study on the impact of video frame losses on the quality perceived by users. Video compression standards, such as MPEG, use a sequence of frames called Group of Pictures (GOP), which is a video compression method which a frame is expressed in terms of one or more neighboring frames. This dependence between frames impacts directly in the quality because a loss of a reference frame prevents the decoding of other frames in GOP, thereby reducing the user-perceived quality. The assessment of quality in this article is estimated by Peak Signal Noise Ratio (PSNR), which compares the original and the received images. Computer simulations were used to show that the degradation on the quality may vary for different patterns of GOPs and type of lost frames.
Thoracic surgery: risk factors for postoperative complications of lung resection
Fernandes, Eduardo Oliveira;Teixeira, Cassiano;Silva, Luis Carlos Correa da;
Revista da Associa??o Médica Brasileira , 2011, DOI: 10.1590/S0104-42302011000300011
Abstract: objective: to identify preoperative and transoperative risks factors for postoperative complications developed in lung resection surgery. methods: during 14 months; 189 patients underwent pulmonary resection and were enrolled to the study. after a clinical interview, patients were evaluated by laboratory, pulmonary function tests and radiography, submitted to a surgical procedure, and were followed during their stay in the icu and hospital, evaluating postoperatory complications and death. results: the postoperative rate of complications was 52.9%: respiratory (34.3%), infectious (31%), and cardiovascular (21.4%). respiratory complications were related to smoking (p < 0.01, rr 2.31), airway obstruction by spirometry (p = 0.01, rr 2.60), presence of anemia (p < 0.01, rr 2.13), and prolonged protrombine time [pt] (p = 0.03, rr 1.77). infection complications were related to smoking (p < 0.01, rr 2.69), airway obstruction by spirometry (p = 0.01, rr 3.31), presence of anemia (p < 0.01, rr 2.10), and prolonged pt (p = 0.03, rr 2.29). cardiovascular problems were related with older age (p < 0.01, rr 2.66), cigarette smoking (p < 0.01, rr 4.55), and hypoxemia (p = 0.03, rr 2.43). the postoperative mortality rate was 7.1%. conclusion: a preoperative evaluation can provide a suitable and safe postoperative prediction of complications in patients submitted to lung resection. patients with copd, hypoxemic, older, and anemic patients must be classified as high-risk for developing these complications.
COGNITIVE DIFFERENCES IN SECOND LANGUAGE LEARNERS AND THE CRITICAL PERIOD EFFECTS
SANDRA ANDRADE DE BASTOS FIGUEIREDO,CARLOS FERNANDES DA SILVA
L1 Educational Studies in Language and Literature , 2009,
Abstract: Research has shown a strong association between psychological, affective, neurological andlearning variables, related also with age and gender factors, in the process of acquisition and/or learningof a second language. However, there is a theoretical controversy concerning the way the critical periodmay affect different aspects of language competence. We developed an assessment instrument to test thephonological awareness and general cognitive achievement in L2, for application in L2 learners and alsoin monolinguals (natives). The goal is to predict the dimension of age (chronological age, age of acquisition,age of arrival) in the L2 literacy skills development. The data collected pertains to the first phase ofa larger study and includes 64 students with migratory experience, acquiring Portuguese as L2. Findingsin what concerns the decoding competence and the first language transference will be discussed, regardingparticularly the results from some of the tests: alphabetic ordinance, phonemic blending, alliterationjudgement and dichotic hearing The achievement observed shows that children present lower levels ofaccuracy in L2 context than expected, not regarding the positive levels at the alliteration judgment task,which is not an evidence of phonological awareness (in the consciousness sense). Alliteration, and rhymejudgments are symptoms of normative phonological knowledge, which is not necessarily phonologicalawareness, and is based on the imitation ability toward verbal stimuli. The age factor remains as the mainpredictor of skill and ability and the mastery exhibited by the adult learners on particular levels of L2phonology decoding does not confirm the critical period hypothesis, which calls for its revision and fornew insights related to education orientations
THE DEVELOPMENT OF READING SKILLS IN A SAMPLE OF PORTUGUESE NORMAL READERS AND DYSLEXIC CHILDREN
LéNIA SOFIA DE ALMEIDA CARVALHAIS,CARLOS FERNANDES DA SILVA
L1 Educational Studies in Language and Literature , 2009,
Abstract: The aim of this article is to discuss the theoretical issues behind reading processes, the relationbetween this skill and dyslexia, and to present some results from a pseudowords reading test with Portuguesechildren. Developmental dyslexia is a specific learning disability characterized by difficulty inlearning to read, and there is strong evidence that dyslexia is related to underlying deficiencies in phonologicalskills. Phonological deficits establish robust differences between dyslexic and normal readers and,according to the theoretical background, phonological awareness can be assessed with pseudowords tests.In this study, we applied the Pseudo words Reading Test, one of twenty tests of the Battery of Tests toAssess Developmental Dyslexia (BADD) constructed to assess dyslexia in Portuguese children between 7and 12 years old. We gave the Pseudo words Reading Test to 555 Portuguese children, aged 8 to 12.Fifty-seven of these children had been previously assessed by other professionals as dyslexics. We triedto verify how factors like age, gender and learning disabilities influence the acuity in pseudo words readingand if this test can be used to assist in an early diagnosis of developmental dyslexia. The results provethat there are significant differences between dyslexic children and normal readers in reading pseudowords in Portuguese language.
Uma amplia o dos espa os políticos de luta: entrevista com José Carlos Moreira da Silva Filho
José Carlos Moreira da Silva Filho,Pádua Fernandes
Prisma Jurídico , 2010,
Abstract: José Carlos Moreira da Silva Filho é doutor em Direito das Rela esSociais pela Universidade Federal do Paraná (UFPR); Mestre em Teoriae Filosofia do Direito pela Universidade Federal de Santa Catarina(UFSC); Bacharel em Direito pela Universidade de Brasília (UnB);Professor da Faculdade de Direito da Pontifícia Universidade Católicado Rio Grande do Sul (PUCRS), no Programa de Pós-gradua o emCiências Criminais – Mestrado e Doutorado – e na Gradua o emDireito; Conselheiro da Comiss o de Anistia do Ministério da Justi a;Membro-Fundador do Grupo de Estudos sobre Internacionaliza o doDireito e Justi a de Transi o (IDEJUST).
Amon-ad: um agente inteligente para avalia o de aprendizagem em ambientes baseado na web
José Carlos Tavares da Silva,José Rodrigues Fernandes
Revista Organiza??es em Contexto , 2006,
Abstract: Este artigo é relacionado a nosso trabalho na aprendizagem a distancia. Aqui propomos um modelo para avaliar learners em um ambiente baseado no ensino a distancia. Certamente, n o estamos interessados em certificar aqueles que est o sob a avalia o. Esse é um outro problema importante a resolver. Temos em mente que a avalia o é mais eficiente se realizada "em-thefly", por exemplo. "mostre-me o que você sabe, enquanto você vai". Ent o este modelo tende a alcan ar este objetivo. Inicialmente, apresentamos os guidelines sob os quais trabalhamos. Finalmente, um modelo é apresentado e as conclus es s o extraídas para explicar um uso melhor desta ferramenta.
Crinoidea from eastern border of the Parnaíba basin (Cabe as Formation, Middle Devonian)
Sandro Marcelo Scheffler,Cleber Fernandes da Silva,Antonio Carlos Sequeira Fernandes,Vera Maria Medina da Fonseca
Boletim do Museu Paraense Emílio Goeldi : Ciências Naturais , 2010,
Abstract: This manuscript presents a description of crinoids found in the Cabe as Formation (Middle Devonian, Parnaíba basin) collected in km 305 outcrop, in Picos municipality, Piauí state. The material consists in isolated and sparsely arranged columnals in samples of fine-grained sandstone. The specimens are not well preserved, but it was possible to describe three morphotypes (PB/Cb-01, PB/Cb-02 and PB/Cb-03). Two of them (PB/Cb-01 and PB/Cb-02) are representedby a single specimen, and the third morphotype (PB/Cb-03), in great quantity, probably represents the most common crinoid in the ancient sedimentation environment of km 305 outcrop. The form of occurrence of the crinoids (probably parautochthonous) suggests that after their death, they has remained in the sediment-water interface for a long time before their burial. This fact is a further indication that corroborates with the suggested deposition model of the Cabe asFormation in this region, represented by a mouth-bar environment in a flood-dominated fluvio-deltaic system.
Leptin Signaling Modulates Expression of Polycomb and Trithorax Complexes in the Brain of Fat Tissue Implanted Polycystic Ovarian Sindrome Mice  [PDF]
Eduardo Henrique da Silva Freitas, Samuel Marcos Ribeiro de Noronha, Maria Nazareth Gamboa Ritto, Carlos Fernandes Baptista, Ismael Dale Cotrim Guerreiro da Silva, Silvana Aparecida Alves Correa-Noronha, Ivaldo da Silva
American Journal of Molecular Biology (AJMB) , 2014, DOI: 10.4236/ajmb.2014.44020
Abstract: The Polycystic Ovary Syndrome (PCOS) is the most common androgenic disorder in women during reproductive life. PCOS may also be accompanied by metabolic syndrome and recent studies point to leptin as playing a role in disrupting infertility and in changing the energy balance in obese mice through its action on the hypothalamus. The aim is to assess the expression of the Polycomb & Trithorax Complexes genes in brain of mice transplanted with fat tissue from normal mice, in order to better understand the neuronal mechanisms underlying the reversion of PCOS. Three B6 V-Lepob/J mouse groups: Normal weight, obese and seven-day-treatment obese had their brain RNA extracted and submitted to an 84 Polycomb & Trithorax Complexes genes PCR Array plate and MetacoreTM pathways localization. Genomic profiles obtained were compared to the ones of the normal-weight-mice group. Differentially expressed genes were 13% and 26% respectively to control and treatment. Major changes were in genes: Snai1/31; Smarca1/?17; Dnmt3b/4.7; Ezh1/ 15. Altered genes were associated to canonical pathways and provided 3 networks related to epigenetics. Underlying neuronal changes caused by leptin in obese mice brain, there is an important role being played by the histone code. Here there is evidence that leptin drives the chromatin packing to a more condensed pattern. Upregulation of methyltransferase genes, like Ezh1, favors this thought. In summary the Polycomb & Trithorax complexes might answer for the silencing of some downregulated genes in the obese mice brain when exposed to leptin.
INFLUêNCIA DE ESTIMATIVAS DE PRODU O DE MADEIRA EM PROCESSOS DE REGULA O FLORESTAL UTILIZANDO PROGRAMA O LINEAR
Gilson Fernandes da Silva,Helio Garcia Leite,Carlos Pedro Boechat Soares,Márcio Lopes da Silva
Ciência Florestal , 2002,
Abstract: Este trabalho teve como principal objetivo avaliar as conseqüências do uso de estimativas de produ o oriundas de diferentes modelos de crescimento e produ o em um modelo de Programa o Linear aplicado à regula o florestal. Assim, utilizando dados de um inventário florestal contínuo, obtiveram-se diferentes estimativas da produ o futura em volume, pelo ajuste de um modelo de produ o em fun o da idade, outro em fun o da idade e do índice de local e por um terceiro modelo que incluiu, além da idade e do índice de local, a densidade, representada pela área basal por hectare. Testou-se também um modelo baseado nos dados de inventário florestal contínuo que utiliza os dados de volume de um período para fazer proje es lineares da produ o para o período seguinte. Em seguida, um problema de regula o florestal simplificado foi idealizado e resolvido pelo modelo I por meio de Programa o Linear, utilizando dados oriundos dos quatro modelos de predi o do volume. Ao final, concluiu-se: a) que modelos de regula o florestal, alimentados por estimativas provenientes de diferentes modelos de produ o, quando resolvidos por Programa o Linear, resultam em diferentes maneiras de se conduzir a floresta; b) que a matriz de coeficientes tecnológicos, alimentada por diferentes dados de produ o e para uma mesma fun o objetivo, afeta, de maneira significativa, o processo de tomada de decis o.
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