Reconhecimento de voz através de unidades menores do que a palavra, utilizando Wavelet Packet e SVM, em uma nova estrutura hierárquica de decisão

The automatic speech recognition by machine has been the target of researchers in the past five decades. In this period have been numerous advances, such as in the field of recognition of isolated words (commands), which has very high rates of recognition, currently. However, we are still far from developing a system that could have a performance similar to the human being (automatic continuous speech recognition). One of the great challenges of searches for continuous speech recognition is the large amount of pattern. The modern languages such as English, French, Spanish and Portuguese have approximately 500,000 words or patterns to be identified. The purpose of this study is to use smaller units than the word such as phonemes, syllables and difones units as the basis for the speech recognition, aiming to recognize any words without necessarily using them. The main goal is to reduce the restriction imposed by the excessive amount of patterns. In order to validate this proposal, the system was tested in the isolated word recognition in dependent-case. The phonemes characteristics of the Brazil s Portuguese language were used to developed the hierarchy decision system. These decisions are made through the use of neural networks SVM (Support Vector Machines). The main speech features used were obtained from the Wavelet Packet Transform. The descriptors MFCC (Mel-Frequency Cepstral Coefficient) are also used in this work. It was concluded that the method proposed in this work, showed good results in the steps of recognition of vowels, consonants (syllables) and words when compared with other existing methods in literature

A tripla perspectiva: a vinda, a permanência e a volta de estudantes angolanos no Brasil

Este artigo é uma reflexão sobre o papel que as universidades paulistas e paranaenses desempenham no processo de formação acadêmica dos estudantes dos Países Africanos de Língua Oficial Portuguesa (Palop), em particular os angolanos. Essa formação na instituição de ensino superior propicia novos diálogos e novas sínteses identitárias possibilitadas por outras práticas culturais apreendidas no contato com alunos, docentes, funcionários, instituições acadêmicas e de pesquisa que ignoram a realidade vivenciada por eles em Angola. Constituiremos, assim, o cenário histórico-cultural; o percurso acadêmico e identitário do estudante angolano; o contexto estudantil angolano; a história recente desse país; o lugar do intelectual e do professor universitário; o papel e o uso da língua portuguesa no Brasil e em Angola no ambiente estudantil, familiar e na rua. Buscamos entender o imaginário do jovem estudante intercambista angolano que convive com os conflitos do estigma do migrante temporário e do estereótipo do refugiado de guerra.

O gênero crônica na sala de aula do ensino médio

In this work we present the results of a research that aims to study the chronicle gender produced in a class of native language. The texts were written by students of a high-school class, under the orientation of the teacher who conducted a didactic sequence in order to explore this gender. In our analysis we observed aspect such as the structure of the general structure of the texts, types of speech and linguistic sequences, some mechanisms of textualization and the characteristics of the gender. In order to attain that, we adopted the theoretical presuppositions of Textual Linguistics and of the Socio-discursive Interactionism, grounding the study of texts and gender in Bronckart (2003; 2006) and Koch (2002; 2004). As a background of the Chronicle Gender we used the studies of Coutinho (1987); Moisés (2003); Sá (2005); Bender; Laurito (1993); Melo (1994); Cândido et al. (1992) among others. The corpus, made up of 15 texts, showed that the narrative is the most used linguistic sequence in the producing of the texts, the discursive world prevailing in the narrative and some instances of the world of exposing. As for the gender characteristics, the daily life was used in order to amuse the reader and make him to reflect upon the daily life. Humor, irony, social criticism and colloquial language were also observed in the texts produced by the students. Although some texts presented the characteristics of the gender, explored in the classroom, some were typically school narratives. That make us believe that a work with textual production under the approach of a text gender is viable, but it is not consolidated yet in many schools as the main object of the central teaching of the Portuguese language. This make us defend a better systematization of the teaching contents having as the main point the reading practice and text production in order to contribute for the growing of the students´ discursive potentialities and, therefore, their effective participation in the language social practices

Marcas da escritura oralizada em Sagarana

This work presents a surveyabout the short stories of Sagarana. first book by Guimarães Rosa, publishedin 1946, and that marked the Brazilian litterature definitely, since we are in front of a new construction of the language, linked to the establishment of a new Portuguese, trough the association between the cult speech and the speech from the sertão, always with a pretence sensitivity that rouses when joins archaisms, neologisms, regional expressions and literary language. Among the nine short stories that made up the work, we will select the following ones, to be analysed: "O Burrinho Pedrês", Traços Biográficos de Lalino Salãthiel ou A volta do marido pródigo , "São Marcos" and A hora e vez de Augusto Matraga". Among the hypothesis that organize and surround this work, we will approach the narrative aesthetics, the creative process and the orallity, i.e., how Rosa trans1ate the oral world, rescuing the archaizing speech in the written narrative construction.We will choose for the establishment of developed questions in this ressearch the theories of Paul Zumthor, Câmara Cascudo, Sílvio Romero, Antonio Candido and Alfredo Bosi, among others. Therefore, we will see, through the narrative reading, how the popular parlances are used, which they are linked. The citations that show the popular tradition presence will be pointed out, through anecdotes, folk songs, legends, myths, folktales and proverbs. Therefore, we, readers, will see the popular tradition presence, that will show itself, and the Rosa's thinking will be known through language art, what is the result of the writer's deliberate choice. We will see the popular experience turned to art

Mecanismos de coesão referencial na produção escrita de alunos concluintes do ensino fundamental

This work aims to identify, describe and analyze the main mechanisms of reference present in the texts produced by students that are finishing their fundamental school. With this in mind, we observe 46 Portuguese classes. The class was in its 9th Fundamental level, in a public school of the Cruzeta, RN. In this period, we collected our corpus that is composed by the papers that students produced. This research has an ethnographic approach and it has as theoretical support some studies about some mechanisms of reference, specifically, the lexical repetition and anaphor. In general, we are based on the studies about cohesive mechanisms from authors as Adam (2008); Beaugrande and Dressler (1981, 1997); Koch (1999, 2004, 2005, 2008), Marcuschi (1983, 1992, 2005, 2006); Bessa Neto (1991) and Neves (2006). In the corpus, we could identify some lexical repetitions (literal, with estrutural variation), as well as, anaphors, mainly pronominal ones. Then, we can notice that most students have showed difficulties in the use of those mechanisms of reference as a strategy of textual progression

Mecanismos de coesão referencial na produção escrita de alunos concluintes do ensino fundamental

This work aims to identify, describe and analyze the main mechanisms of reference present in the texts produced by students that are finishing their fundamental school. With this in mind, we observe 46 Portuguese classes. The class was in its 9th Fundamental level, in a public school of the Cruzeta, RN. In this period, we collected our corpus that is composed by the papers that students produced. This research has an ethnographic approach and it has as theoretical support some studies about some mechanisms of reference, specifically, the lexical repetition and anaphor. In general, we are based on the studies about cohesive mechanisms from authors as Adam (2008); Beaugrande and Dressler (1981, 1997); Koch (1999, 2004, 2005, 2008), Marcuschi (1983, 1992, 2005, 2006); Bessa Neto (1991) and Neves (2006). In the corpus, we could identify some lexical repetitions (literal, with estrutural variation), as well as, anaphors, mainly pronominal ones. Then, we can notice that most students have showed difficulties in the use of those mechanisms of reference as a strategy of textual progression

Linguagem e argumentação na produção escrita de vestibulandos

In this study, we analyzed the argumentative processes of written texts produced by UERN (Federal University of Rio Grande do Norte) vestibulandos : (students who apply for University Entrance Examinations in Brazil). It has as its corpus twenty compositions by such students. These compositions, collected in UFRN COMPERVE (Permanent Commission of vestibular examinations) and written in 2005 examination, were selected in a random way. The theoretical support is based on Perelman & Olbrechts-Tyteca (1999; 2002), Reboul (2004), Bakhtin (1992), Faraco (2003), Platão e Fiorim (2003) e Geraldi (1997), and other scholars. The work aimed to investigate how vestibulandos make use of argumentative techniques in order to construct their arguments in the vestibular examination. In the analysis of the corpus we considered that the used argumentative techniques, the relationship with the thesis, the sense effects students wanted to produce and the type of the required speech. It showed that in the, discourse construction of argumentative texts, students made use, with more frequency, of the following argumentative techniques: pragmatic arguments, arguments of the definition, comparison arguments, division arguments, example arguments, argument of the model and authority arguments as means to support their theses. However it was not carried out in a conventional way, reason why it leads us to believe that schools, as part of human activity, responsible for education and for the insert of learners in the literate world, have a fundamental role concerning the offer of conditions, so that, the teaching of Portuguese Language leads students to a systematic and explicit preparation of the knowledge, regarding the social and functions of the language, as well as of the strategies of the construction of argumentative texts. This can lead learners to develop communicative competence and to feel more confident when working with text production

Formação docente e gêneros discursivos:o dizer, o saber e o fazer

This master dissertation presented to the Language Studies Post-Graduation Program of the Federal University of Rio Grande do Norte aims present an analysis about the initial teacher training, the knowledge about discursive genres and its usage in basic education professional classrooms. Therefore, it was analyzed, from teachers of fourth and fifth grades of elementary schools, if the initial training provides enough useful tools to be applied in Portuguese classes, i.e., if during the teacher training process concepts of discursive genres emerge, which of these concepts can be noticed and how this knowledge helps teachers in their classrooms. In order to achieve this aim, it was taken into account studies about the initial teacher training, about the knowledge diversity that is part of the teaching knowledge and also about discursive genres based on Bakhtin‟s conception, which is used in the Parâmetros Curriculares Nacionais (PCN). This research is qualitative of interpretative basis and has taken an opened questions questionnaire and classroom observations with audio recording data as corpus of analysis. As results of this investigation, it is possible to emphasize that the initial teacher training has left some gaps in discursive genres concepts and usage in Portuguese classes, that it is not only one kind of knowledge that compound the teacher knowledge and, because of this, working with disciplinarians knowledge, specially about discursive genres, is to emphasize one among many others.

ÁFRICA(S), MOÇAMBICANIDADE, MIA COUTO: uma varanda para o Índico

Always seen by others eyes, unknown of the languages and other "realities" that constitute, the Africa, specially Mozambique, now (re)invent itself, palimpsestly, in narratives of your griots, narrators and/or storytellers. Our thesis intend, by the review of novel Under the frangipani, to demonstrate that the mozambican writer Mia Couto intends to participate the (re)construction of a devasted nation by war and conflicts, based on belief that the role writer "is to create requisites of a more african thought, to the assessment of your place and your time won't be done from categories created by others" (COUTO, 2005). At first, we show how the mozambican literary system consists itself; then, the insertion of coutian narrative against the prevalence tradition and, also, by the analysis of the constituent elements of the chosen novel, the way how made piece of resistance to reification, objectification of the individuald in the contemporary world , your writing will be present in this sharing of the sensitive. Besides Mia Couto, in our work we'll counting on the lessons of Candido, Noa, Hernandez, Adorno, Paz, Fonseca, Secco, among others studious of african narrative and, specially, Mozambique narrative

Conectores sequenciadores em artigos de opinião escritos por vestibulandos: uma questão de marcação linguístia com implicações para o ensino

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

A Transposição Didádica dos Gêneros do domínio do discursivo publicitários nos livros didáticos

Advertising text has been a subject of many investigations, because of its multimodal universe. Embodied by a linguistic and discursive materiality laying on scene persuasion, argumentation and power imagery of multissemiotics elements, the advertising text acts as an instrument of power, creating and destroying, promising and denying (CARVALHO, 2007). Advertising not only invites us to act for it, but directs us to look at it. It was under this moving look - of charm and interrogations - that discussions raised in this research were born. Investigations are directed to the school environment, in special, for the discursive advertising domain in Portuguese Language Textbook. It is from this environment that was born our research whose main objective is to analyze how does the didactic transposition of textual genres, described by Marcuschi (2008) as belonging to the "advertising" discourse domain (focusing on advertising genre) in didactic books teaching Portuguese Language before and after the advent of the PCN. Textbooks taken as reference for the study are historically situated in the 90s of the twentieth century and 10 century. Such books refer to elected 7th and 8th grades, currently corresponding to the 8th and 9th grades of elementary school. The choice is justified by the fact that in these Textbook teaching series the presence of advertising domain is recurrent and "didactized". In addition, we are also concerned in analyzing books that circulated around us and our regional reality. Hence, we elected books that were used by two public high schools: Municipal School Clementina Ana da Conceição in Jaçanã city in the Rio Grande do Norte state, State School for Elementary and High school Carlota Barreira in Areia city, Paraíba state. In our research the following categories of analysis were highlighted: (1) presence of advertising in DB, (2) fluctuation terminology: concepts and classifications; (3) The complexity of concepts facilitation, (4) what they propagate, and from which nature are the explored advertisements. From our analysis, we observe how the treatment of textual "advertising" genres have been inserted into Textbooks, and how occurs, in general, their didactic transposition. Focusing on the issue of fluctuating terminology, we noted the difficulty in drawing boundaries between the genres of advertising domain in the Textbooks. However, this also would result in the complexity - in the field of scientific knowledge - of delimiting genres of the same domain. To accomplish our studies, it was required a thorough and systematic dialogue with theories regarding the concept of "Didactic Transposition", due to the theoretical Chevallard Yves (1991), research on the textual genres - Bezerra (2005), Marcuschi (2008), Bazerman (2005), Swales (2004), among others - and studies involving the field of "Advertising" - Sandmann (2002), Carvalho (2007) and others

Práticas de letramento digital de professores em formação: demandas, saberes e impactos

Over the last decades, the digital inclusion public policies have significantly invested in the purchase of hardwares and softwares in order to offer technology to the Brazilian public teaching institutions, specifically computers and broadband Internet. However, the teachers education to handle these artefacts is put away, even though there is some demand from the information society. With that, this dissertation chooses as an object of study the digital literacy practices performed by 38 (thirty-eight) teachers in initial and continuous education by means of the extension course Literacies and technologies: portuguese language teaching and cyberculture demands. In this direction, we aim at investigating the digital literacy practices of developing teachers in three specific moments: before, while and after this extension action with the intent to (i) delineate the digital literacy practices performed by the collaborators before the formative action; (ii) to narrate the literacy events made possible by the extension course; (iii) to investigate the contributions of the education course to the collaborators teaching practice. We sought theoretical contributions in the literacy studies (BAYNHAM, 1995; KLEIMAN, 1995; HAMILTON; BARTON; IVANIC, 2000), specifically when it comes to digital literacy (COPE, KALANTZIS, 2000; BUZATO, 2001, 2007, 2009; SNYDER, 2002, 2008; LANKSHEAR & KNOBEL, 2002, 2008) and teacher education (PERRENOUD, 2000; SILVA, 2001). Methodologically, this virtual ethnography study (KOZINETS, 1997; HINE, 2000) is inserted into the field of Applied Linguistics and adopts a quali-quantitative research approach (NUNAN, 1992; DÖRNYEI, 2006). The data analysis permitted to evidentiate that (i) before the course, the digital literacy practices focused on the personal and academic dimensions of their realities at the expense of the professional dimension; (ii) during the extension action, the teachers collaboratively took part in the hybrid study sessions, which had a pedagogical focus on the use of ICTs, accomplishing the use of digital literacy practices - unknown before that; (iii) after the course, the attitude of the collaborator teachers concerning the use of ICTs on their regular professional basis had changed, once those teachers started to effectively make use of them, promoting social visibility to what was produced in the school. We also observed that teachers in initial education acted as more experienced peers in collaborative learning process, offering support scaffolding (VYGOTSKY, 1978; BRUNER, 1985) to teachers in continuous education. This occurred because of the undergraduates actualize digital literacy practices were more sophisticated, besides the fact being integrate generation Y (PRENSKY, 2001)

A leitura e o leitor presumido nas avaliações oficiais

Este estudio se refiere a una investigación a cerca de la concepción de la lectura que subyace en la Matriz de Referencia de la Prueba Brasil, y, mediante las análisis del modelo 2009, entender lo que el lector se supone que responder en las preguntas de esta prueba. El estudio tiene como objetivo satisfacer se presume lector general para responder a las preguntas de prueba de Brasil y el mapa de la concepción de la lectura que subyace en la matriz de referencia tal prueba. Los objetivos específicos apuntan a examinar los temas de Prueba Brasil, identificando qué descriptores se materializan en el mismo, que son los más recurrentes. El estudio tiene como fundamentos los estudios bakhtinianos a cerca de los diálogos del linguaje (Bakhtin, 2003, 2008; Volochínov/Bakhtin, 1993) y la concepción de la lectura defendida por Geraldi (2007), Larossa (2001) y DeCerteau (1994). La investigación és caracterizada como cualitativo-interpretativo, con enfoque socio-histórico, y se encuentra dentro del campo de la Lingüística Aplicada, que en las últimas décadas ha demostrado contribuciones para la enseñanza de lenguas y formación docente. Para hacer el análisis de las pruebas, inicialmente construido una tabla (Tabla 1), que contiene los seis macrotópicos Matrix lengua portuguesa en la que estábamos repartiendo los descriptores presentes en las cuestiones de prueba referenciada relacionándolos con sus temas. Tras analizar la cuestión, con el fin de identificar al presunto lector a responder a estas preguntas. Mediante análisis de la Matriz de Referencia de la Prueba Brasil, entendemos que ella está de acuerdo con los Parámetros Curriculares de la Lengua Portuguesa. Así, la concepción que subyace en la lectura es que la lectura es una actividad que depende del proceso individual, pero que és parte de un contexto social e involucra a habilidades relacionadas con la comprensión y producción de sentido. Mediante la observación de la prueba, afirmamos qué el lector con la capacidad de responder a las preguntas es lo que desarrolla actitudes favorables a cerda de la lectura. A saber: (i) reconocen ampliamente las palabras, (ii) identifican los objetivos y funciones de la lectura, en reconocimiento de la función de apoyo de género y el contexto del texto, (iii) predice el contenido de los textos a se lee a la luz de su apoyo, su género y su contexto; (iv) plantea hipótesis sobre el contenido del texto que se lee, (v) es capaz de buscar ideas textual e intertextual. Es decir, hace inferencias, aumentando la comprensión, la asociación de diversos elementos presentes en el texto y que son parte de sus propias experiências personales, (vi) construye la comprensión global del texto leído por la unificación de la información explícita e implícita, (vii) tiene la capacidad de evaluar la lectura de forma ética y afectiva, o de hacer extrapolaciones coerentes sin escapar de la temática del texto. Por último, podemos decir que las implicaciones pedagógicas de este trabajo para mi actividad profesional es de gran importancia, ya que desde la detección de lo que se requiere de los estudiantes y, en consecuencia, un nuevo enfoque para la enseñanza de la lengua materna como podemos reflexionar sobre eso y encontrar maneras de mejorar nuestro desempeño. Tanto nuestro entrenador como nuestros compañeros. Dejando a un nivel puramente descriptivo de los problemas de acción conjunta más eficaz, entendiendo que la enseñanza de lectura tiene un carácter complejo. En este sentido, tenemos que ser menos intuitivo y más reflexiva. Nos gustaría hacer hincapié en que tenemos la intención de socializar esta investigación con nuestros compañeros, ya que entendemos que es un material que puede contribuir a un nuevo aprendizaje para la práctica de los profesores que se inclinan. Además indicó que la principal contribución de este trabajo es nuestra mirada en el proceso de la lectura en el aula, la comprensión de que el estudiante de ofertas diarias con textos localizados, derechos de autor, histórico y representativo de las diferentes interacciones en el mundo. Por lo tanto, es el momento de ser gestado las prácticas de lectura hacia una educación más significativa

A tessitura da memória em o vendedor de passados de José Eduardo Agualusa

In the study of African literature in Portuguese language, the theme importance of memory is done by contact those literary works have with the context in which they operate. This study aims to reflect how memory as social element becomes an agent of the composition of literary structure in the O Vendedor de Passados (2004), by José Eduardo Agualusa. Therefore, we have as reference the critical method developed by Antonio Candido (1976), regarding the critical dialectic, in order to understand how such a throwback acts in the structuring of the romance in a relationship with both structural and thematic elements. Firstly, it presents a panoramic reading the Angolan literary scene in the post-independence, relating this context with the route of writing of José Eduardo Agualusa. Then it performs the analysis of the relationships between narratives categories - narrator, characters, space, time - and the memorial element, keeping in mind that these categories would be constructed in dialogue with the memory. Lastly, there is the reflection on the dynamics between fiction and reality apprehended in novelistic discourse in which a seller of past figures in an analysis that takes place from the skeptical look on this work. As a theoretical approach, we highlight mainly readings: Hampaté-Bâ (2010), Laura Padilla (2007), Tania Macêdo (2008) for the observation of the specific African context quickened in the novel; Tedesco (2004), Halbwachs (2006), Le Goff (2003) regarding the conceptualisation of memory; and Landesman (2006), Krause (2004), Gai (1997) in cutting the skeptical outlook with which the romance dialogues

A organização da interação professor-aluno em sala de aula: turnos e o par pergunta-resposta

Este trabalho tem como foco principal a interação em sala de aula, especificando aspectos da organização linguístico-discursiva, na produção conjunta da fala da professora e dos alunos, materializada em turnos, ressaltando o par pergunta-resposta na aula de Língua Portuguesa. Para alcançarmos esse objetivo, inspiramo-nos em alguns trabalhos acerca da organização da interação que adotaram a perspectiva dos estudos interacionais e a abordagem etnográfica, a fim de explicitar o conhecimento nos espaços de ensino e aprendizagem. Entre eles, citamos as pesquisas de Galvão (1996, 2004) e de Matêncio (2001). Nessa direção, descrevemos o processo de interação em sala de aula em uma escola pública, analisando e interpretando as ações de linguagem realizadas pela professora e pelos alunos. Teoricamente, embasamo-nos, principalmente, na Análise da Conversação, ancorando-nos no estudo pioneiro de Sacks, Schegloff e Jefferson ([1974] 2003); nos postulados de Marcuschi ([1986] 2007a); nas pesquisas de Kerbrat-Orecchioni (2006), dentre outros. Explicitamos uma tipologia de perguntas e respostas em sala de aula, quanto à sua forma e função, conforme os postulados teóricos de Stubbs (1987), Araújo (2003), Fávero, Andrade e Aquino (2006), Silva (2006) e Koshik (2010). Analisamos a organização da tomada de turno, seguida de uma investigação sobre perguntas e respostas no discurso desenvolvido face a face. Na tentativa de compreendermos o cotidiano dos envolvidos no cenário de sala de aula, adotamos a abordagem etnográfica e o método indutivo, nas perspectivas de André (2010) e Chizzotti (2006). Os dados foram gerados através de pesquisa de campo, por meio de gravações (em áudio) de aulas de Língua Portuguesa, posteriormente transcritas e transformadas no corpus de pesquisa. As análises demonstraram que a interação entre professora e alunos organizou-se em trocas de turnos, na maioria das vezes, controladas pela professora, evidenciando-se uma relação de assimetria entre os participantes. Esses turnos concretizados, geralmente, no par adjacente pergunta-resposta revelaram como a construção do conhecimento se realiza em sala de aula. Por fim, observamos que a interação em sala de aula de Língua Portuguesa é organizada por aspectos sociais e pedagógicos intrinsecamente imbricados