Submitted by Caroline Xavier (caroline.xavier@pucrs.br) on 2017-07-04T18:10:09Z No. of bitstreams: 1 TES_SAUL_ESTEVAM_FERNANDES_COMPLETO.pdf: 3375408 bytes, checksum: 27f32bc3a1409a358307936c83c75258 (MD5) / Made available in DSpace on 2017-07-04T18:10:09Z (GMT). No. of bitstreams: 1 TES_SAUL_ESTEVAM_FERNANDES_COMPLETO.pdf: 3375408 bytes, checksum: 27f32bc3a1409a358307936c83c75258 (MD5) Previous issue date: 2017-03-23 / Conselho Nacional de Pesquisa e Desenvolvimento Cient?fico e Tecnol?gico - CNPq / The present study discusses how the mechanisms for resolving interstate boundary issues were metamorphosed during the First Republic through debates in various institutions, such as the National Congress, the Senate, the Federal Supreme Court (STF), among others. We have noticed that, in the beginning, thought from the subordinations of the state interests to a greater interest, the national, the resolution devices of the interstates boundaries issues have been dissolved throughout the politics. However, the gaps found in the elaboration of the constitution of 1891 were of fundamental importance for the judicialization of those devices. We also have noticed that the process of judicialization started at the STF ended up metamorphosed in other ways, because of the long legal proceedings of brazilian justice, giving subterfuges on recognizing and strenghtening of the arbitral tribunals, as well as in the importance attributed to the national executive through the intermediary of the President of the Republic or emissaries linked to it. / O presente estudo discute como os dispositivos de resolu??o das quest?es de limites interestaduais foram se metamorfoseando durante a Primeira Rep?blica atrav?s dos debates em diversas institui??es, como Congresso Nacional, Senado Federal, Supremo Tribunal Federal (STF), dentre outras. Perceberemos que, inicialmente, a partir da subordina??o dos interesses estaduais pelo interesse maior, o nacional, as resolu??es das quest?es de limites foram pensadas para serem dirimidas atrav?s da pol?tica. Contudo, as brechas dispostas na produ??o da Constitui??o de 1891 foram de fundamental import?ncia para que houvesse a judicializa??o dos dispositivos. Ainda perceberemos que o processo de judicializa??o iniciado no STF acabou se metamorfoseando em outro meio, pois os demorados tr?mites da justi?a brasileira acabaram dando subterf?gios no reconhecimento e fortalecimento dos Tribunais Arbitrais, assim como na import?ncia atribu?da ao Executivo Nacional por meio da intermedia??o do Presidente da Rep?blica ou de emiss?rios vinculados ao mesmo.

Submitted by PPG Ci?ncia da Computa??o (ppgcc@pucrs.br) on 2018-06-19T11:37:24Z No. of bitstreams: 1 EVANDRO BRASIL FONSECA_TES.pdf: 1972824 bytes, checksum: 9fca0c499753cd9d2822c59040e826bf (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-06-26T14:40:39Z (GMT) No. of bitstreams: 1 EVANDRO BRASIL FONSECA_TES.pdf: 1972824 bytes, checksum: 9fca0c499753cd9d2822c59040e826bf (MD5) / Made available in DSpace on 2018-06-26T14:48:46Z (GMT). No. of bitstreams: 1 EVANDRO BRASIL FONSECA_TES.pdf: 1972824 bytes, checksum: 9fca0c499753cd9d2822c59040e826bf (MD5) Previous issue date: 2018-03-19 / Coreference Resolution task is challenging for Natural Language Processing, considering the required linguistic knowledge and the sophistication of language processing techniques involved. Even though it is a demanding task, a motivating factor in the study of this phenomenon is its usefulness. Basically, several Natural Language Processing tasks may benefit from their results, such as named entities recognition, relation extraction between named entities, summarization, sentiment analysis, among others. Coreference Resolution is a process that consists on identifying certain terms and expressions that refer to the same entity. For example, in the sentence ? France is refusing. The country is one of the first in the ranking... ? we can say that [the country] is a coreference of [France]. By grouping these referential terms, we form coreference groups, more commonly known as coreference chains. This thesis proposes a process for coreference resolution between noun phrases for Portuguese, focusing on the use of semantic knowledge. Our proposed approach is based on syntactic-semantic linguistic rules. That is, we combine different levels of linguistic processing, using semantic relations as support, in order to infer referential relations between mentions. Models based on linguistic rules have been efficiently applied in other languages, such as: English, Spanish and Galician. In few words, these models are more efficient than machine learning approaches when we deal with less resourceful languages, since the lack of sample-rich corpora may produce a poor training. The proposed approach is the first model for Portuguese coreference resolution which uses semantic knowledge. Thus, we consider it as the main contribution of this thesis. / A tarefa de Resolu??o de Correfer?ncia ? um grande desafio para a ?rea de Processamento da Linguagem Natural, tendo em vista o conhecimento lingu?stico exigido e a sofistica??o das t?cnicas de processamento da l?ngua empregados. Mesmo sendo uma tarefa desafiadora, um fator motivador do estudo deste fen?meno se d? pela sua utilidade. Basicamente, v?rias tarefas de Processamento da Linguagem Natural podem se beneficiar de seus resultados, como, por exemplo, o reconhecimento de entidades nomeadas, extra??o de rela??o entre entidades nomeadas, sumariza??o, an?lise de sentimentos, entre outras. A Resolu??o de Correfer?ncia ? um processo que consiste em identificar determinados termos e express?es que remetem a uma mesma entidade. Por exemplo, na senten?a ?A Fran?a est? resistindo. O pa?s ? um dos primeiros no ranking...? podemos dizer que [o pa?s] ? uma correfer?ncia de [A Fran?a]. Realizando o agrupamento desses termos referenciais, formamos grupos de men??es correferentes, mais conhecidos como cadeias de correfer?ncia. Esta tese prop?e um processo para a resolu??o de correfer?ncia entre sintagmas nominais para a l?ngua portuguesa, tendo como foco a utiliza??o do conhecimento sem?ntico. Nossa abordagem proposta ? baseada em regras lingu?sticas sint?tico-sem?nticas. Ou seja, combinamos diferentes n?veis de processamento lingu?stico utilizando rela??es sem?nticas como apoio, de forma a inferir rela??es referenciais entre men??es. Modelos baseados em regras lingu?sticas t?m sido aplicados eficientemente em outros idiomas como o ingl?s, o espanhol e o galego. Esses modelos mostram-se mais eficientes que os baseados em aprendizado de m?quina quando lidamos com idiomas menos providos de recursos, dado que a aus?ncia de corpora ricos em amostras pode prejudicar o treino desses modelos. O modelo proposto nesta tese ? o primeiro voltado para a resolu??o de correfer?ncia em portugu?s que faz uso de conhecimento sem?ntico. Dessa forma, tomamos este fator como a principal contribui??o deste trabalho.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-01-16T19:23:53Z No. of bitstreams: 1 AntonioRobertoDaSilva_DISSERT.pdf: 915222 bytes, checksum: 64b2c728cf11c9c00f4fe4e20d17d2ff (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-01-22T13:42:45Z (GMT) No. of bitstreams: 1 AntonioRobertoDaSilva_DISSERT.pdf: 915222 bytes, checksum: 64b2c728cf11c9c00f4fe4e20d17d2ff (MD5) / Made available in DSpace on 2018-01-22T13:42:45Z (GMT). No. of bitstreams: 1 AntonioRobertoDaSilva_DISSERT.pdf: 915222 bytes, checksum: 64b2c728cf11c9c00f4fe4e20d17d2ff (MD5) Previous issue date: 2017-11-29 / Alicer?ado em uma abordagem diferenciada, expondo cen?rios hist?ricos, com ?nfase nos conceitos essenciais de Probabilidade e de Geometria admiss?veis no Ensino M?dio, al?m de esclarecimentos te?ricos aprofundados e resolu??es de problemas motivadores de probabilidade geom?trica, o presente trabalho tem por objetivo fazer uma conex?o entre o bin?mio probabilidade e geometria no sentido de abordar determinados teoremas da geometria euclidiana plana, anal?tica e espacial, resolvendo problemas ? que n?o s?o poucos ? de probabilidade, utilizando somente a sua defini??o cl?ssica. A abordagem ? uma via de m?o dupla, pois possibilita a intera??o entre os temas supracitados, facilitando e estimulando de modo concreto e pr?tico a compreens?o e aprendizagem dos temas estudados. Em fun??o do ensinamento dessa tem?tica, prop?e-se potencializar sua aprendizagem com recursos resolutivos realmente funcionais e motivadores, uma vez que, devido a necessidade de possuir amplo conhecimento em v?rios ?mbitos educacionais, o estudo de Probabilidade se torna um t?pico imprescind?vel nas diversas ?reas da engenharia, na medicina, administra??o, e, inclusive, no dia-a-dia. / Grounded on a differentiated approach, exposing historical scenarios, with emphasis on the essential concepts of Probability and Geometry admissible in High School, in addition to indepth theoretical clarifications and resolutions of geometric probability motivating problems, present work by objective make a connection between the binomial probability and geometry in the sense of addressing certain theorems of flat Euclidean, analytic, and spatial geometry, solving problems ? which are not few ? of probability, using only their classical definition. The approach is a two-way street, because it allows the interaction between the above mentioned themes, facilitating and stimulating in a concrete and practical way the understanding and learning of the subjects studied. Due to the teaching of this thematic, it is proposed to potentiate its learning with really functional and motivational resolution resources, once, due to the need to have ample knowledge in several educational environments, the Probability study becomes an indispensable topic in the various areas of engineering, medicine, administration, and even day-to-day life.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-09-05T19:55:41Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lomanto_zogaib_neves.pdf: 8358673 bytes, checksum: 9f42efc6634c0b49d194cc2a19630c84 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-09-18T17:00:26Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lomanto_zogaib_neves.pdf: 8358673 bytes, checksum: 9f42efc6634c0b49d194cc2a19630c84 (MD5) / Made available in DSpace on 2017-09-18T17:00:26Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lomanto_zogaib_neves.pdf: 8358673 bytes, checksum: 9f42efc6634c0b49d194cc2a19630c84 (MD5) Previous issue date: 2017 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O Cerrado ? considerado um hotspot mundial de biodiversidade, por apresentar uma vasta abund?ncia de esp?cies end?micas que sofrem uma anormal perda de habitat. Al?m disso neste bioma h? importantes bacias hidrogr?ficas, cuja preserva??o das nascentes e leito dos rios e c?rregos ? de extrema necessidade. Com a finalidade de facilitar o estudo dessas ?reas a utiliza??o do Sensoriamento Remoto tornou-se uma excelente ferramenta. Assim, num primeiro momento, este trabalho utilizou imagens dos sensores dos sat?lites Landsat-5 e Landsat-8 para monitorar o desenvolvimento de ?reas de degrada??o, utilizando o ?ndice NDVI, na sub-bacia Hidrogr?fica do Ribeir?o Chiqueiro entre 1984 e 2016. No segundo momento verificou a aplicabilidade das imagens do sat?lite CBERS-4 na distin??o de diferentes tipos de vegeta??o e ou uso e ocupa??o do terreno, comparando-o com o sat?lite Landsat-8, e Rapideye-3, por meio do ?ndice NDVI e da diferen?a NDVI. Como resultados da primeira parte do trabalho foi poss?vel quantificar 108 vo?orocas na regi?o e atestar que a ?rea da sub-bacia sofreu grandes mudan?as nos anos estudados, principalmente com aumento expressivo do uso e ocupa??o do terreno. Nas ?reas de entorno das vo?orocas, que tinham como predomin?ncia tipos de vegeta??o com menor densidade de dossel, como cultura agropecu?rias (principalmente pasto), Campo limpo e Campo Sujo, verificou-se uma maior tend?ncia de crescimento dos vo?orocamentos. Na segunda parte do trabalho foi poss?vel verificar que, como j? era esperado, as imagens do sensor do sat?lite Rapideye, apresentaram melhor resolu??o, sendo seguidas pela imagem do sensor do sat?lite CBERS-4, que se mostrou vi?vel para uso em ?reas de Cerrado. Mesmo assim, estas s?o preteridas por imagens do sensor do sat?lite Landsat-8, que no presente trabalho obteve os piores resultados, deixando de identificar muitas diferen?as na vegeta??o. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / The Cerrado is considered a global biodiversity hotspot due to the abundance of Endemic species that suffer a huge habitat loss. Besides in this biome there are important hydrographic basins, whose Preservation of springs, rivers and streams is of utmost importance. In order to facilitate the study of these areas, the use of Remote Sensing has become an excellent tool. Thus, in the first stage, this work used images from the Landsat-5 and Landsat-8 satellite sensors to monitor the development of degradation areas, using the NDVI index, in the sub-basin of Ribeir?o Chiqueiro between 1984 and 2016. In the second The results obtained in this study show the applicability of the CBERS-4 satellite images to the distinction between different vegetation types and or use and occupation of land, comparing it with the satellite Landsat-8 and Rapideye-3, using the NDVI index and the NDVI difference. As a result of the first part, it was possible to quantify 108 gullies in the region attesting that the sub-basin area underwent major changes in the years studied, mainly with a significant increase in use and occupation of land. In the areas surrounding the gullies, which had as predominant types of vegetation with lower canopy density, such as agricultural culture (mainly pasture), Campo Limpo and Campo Sujo, there was a greater tendency of vo?orocamentos growth. In the second part of the work, it was possible to verify that, as expected, the images of Rapideye satellite sensor presented better resolution and were followed by the CBERS-4 satellite image, which proved to be feasible for use in Cerrado areas. Even so, these are neglected by images of the Landsat-8 satellite sensor, which in the present work obtained the worst results, failing to identify many differences in vegetation.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-04-18T18:02:30Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lucimar_alves_lopes_silva.pdf: 6308583 bytes, checksum: 3b82089f8abfbcbd0a050d50ea5fd114 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-04-23T16:50:03Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lucimar_alves_lopes_silva.pdf: 6308583 bytes, checksum: 3b82089f8abfbcbd0a050d50ea5fd114 (MD5) / Made available in DSpace on 2018-04-23T16:50:03Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) lucimar_alves_lopes_silva.pdf: 6308583 bytes, checksum: 3b82089f8abfbcbd0a050d50ea5fd114 (MD5) Previous issue date: 2017 / Este estudo teve como objetivo principal analisar os problemas identificados em processos regidos por editais de concursos p?blicos para professor efetivo da Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) - Diamantina ? MG, a partir das resolu??es normativas que orientam os procedimentos para o ingresso na carreira do Magist?rio Superior na institui??o. Processos Administrativos Disciplinares (PAD), processos de sindic?ncias, atas de reuni?es do Conselho Universit?rio, editais de concurso com recursos e desdobramentos previstos e coincidentes com o per?odo da pesquisa e outros documentos institucionais constitu?ram a fonte de pesquisa deste estudo para identifica??o das dificuldades ou lacunas existentes entre as resolu??es espec?ficas e a execu??o dos procedimentos na realiza??o dos concursos. Os autores F?vero (2006); Santos; Cerqueira (2009); Saviani (2008); Amaral (2008) e Fowler (2011) entre outros, embasaram as discuss?es te?ricas sobre as peculiaridades da gest?o da educa??o superior, no contexto das reformas administrativas e educacionais no Brasil. O per?odo considerado para a pesquisa foram os anos de 2011 a 2015. A motiva??o pelo tema surgiu a partir das constantes indaga??es de usu?rios da Institui??o no que concerne ? frequ?ncia de interposi??o de recursos administrativos e judiciais, anula??o de certames e instaura??o de PAD e, em decorr?ncia, a estagna??o e comprometimento da efetiva??o do processo educativo devido a n?o utiliza??o da vaga docente. A pesquisa possui uma abordagem qualitativa, de natureza b?sica, com objetivo explorat?rio e descritivo, especificamente, um estudo de caso valendo-se de an?lise bibliogr?fica e documental. Como resultado da pesquisa apontam-se procedimentos imprescind?veis e preventivos para a efetividade das a??es durante todo o certame: cuidado na verifica??o da proposta de editais recebidas dos colegiados de cursos para verifica??o da conson?ncia dos crit?rios constantes nos editais com a resolu??o em vigor; dissemina??o da informa??o com capacita??o dos envolvidos em concursos pelo ?rg?o respons?vel, al?m do estabelecimento de pol?ticas de gest?o da informa??o acess?veis aos usu?rios. Acredita-se que a relev?ncia deste trabalho seja justificada pela possibilidade de contribui??o e oportunidade de reflex?es para as pr?ticas de gest?o da UFVJM, visando o fortalecimento e crescimento da institui??o. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Educa??o, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / This research had as main objective to examine the procedure problems identified in processes governed by public notices for effective teacher of the Federal University of the Valleys of Jequitinhonha and Mucuri (UFVJM) ? Diamantina, MG, starting from the normative resolutions that guide the procedures for the entrance in the career of the Superior Teaching in this institution. Disciplinary Administrative Procedures (ADP), processes of inquiries, University Council meeting minutes, public edicts of contests for teaching that demands resources and its developments (40 papers) and other institutional documents constituted the source of research of this study in order to identify the difficulties or existent gaps between the specific resolutions and the execution of the procedures in the accomplishment of the contests. F?vero (2006); Santos; Cerqueira (2009); Saviani (2008); Amaral (2008), Fowler (2011) and others were the basis of theoretical discussions about the peculiarities of the administration of the superior education, in the context of the administrative and education reforms in Brazil. The period considered for this research were the years 2011 to 2015. The motivation for the theme arose because of the constant doubts from the users of this institution with regard to the high frequency of interference of administrative and judicial resources, annulment of contests and commencement of ADP and, in consequence, the stagnation and lack of commitment with the educational process due to the non use of the educational vacancy. This research was performed starting from a qualitative approach, of basic nature, with exploratory and descriptive objective, specifically, a case study, of bibliographical and documental analysis. Indispensable and preventive procedures are pointed for the effectiveness of the actions during whole the process as results of this analysis: attention to the verification of the public edicts that are received by the collegiate courses for assessment with the constant criteria between the documents; dissemination of the information; technical and professional capacitation of the involved in public tender by the responsible organ; establishment of information management policies accessible to all users. The relevance of this work is justified by the contribution possibility and opportunity of reflections for the practices of administration of UFVJM, longing for the strenghtening and growth of the institution.

Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-04-11T19:49:08Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) mario_guimaraes_gomes.pdf: 3450314 bytes, checksum: 7926a8e2ba65ecc89c051242bc3a14b3 (MD5) / Rejected by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br), reason: Verificar: refer?ncia, keywords, n?o h? ag?ncia financiadora (somente com recursos financeiros) on 2018-04-20T14:29:00Z (GMT) / Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-05-15T17:46:35Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) mario_guimaraes_gomes.pdf: 3450314 bytes, checksum: 7926a8e2ba65ecc89c051242bc3a14b3 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-05-15T19:19:45Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) mario_guimaraes_gomes.pdf: 3450314 bytes, checksum: 7926a8e2ba65ecc89c051242bc3a14b3 (MD5) / Made available in DSpace on 2018-05-15T19:19:45Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) mario_guimaraes_gomes.pdf: 3450314 bytes, checksum: 7926a8e2ba65ecc89c051242bc3a14b3 (MD5) Previous issue date: 2017 / Esta pesquisa objetivou subsidiar os docentes nas atividades de Matem?tica relacionadas ao conte?do de geometria, tendo em vista a forma??o de alunos baseadas nas habilidades e compet?ncias estabelecidas pelos Par?metros Curriculares Nacionais para o Ensino M?dio (PCNEM), pelas Orienta??es Educacionais Complementares aos Par?metros Curriculares Nacionais (PCN + Ensino M?dio) e pela Matriz de Refer?ncia do Exame Nacional do Ensino M?dio (ENEM). Para isso, foi realizada uma pesquisa bibliogr?fica e an?lise documental com o intuito de caracterizar o estudo de geometria no ?mbito escolar considerando tais compet?ncias e habilidades. Foi feita uma an?lise da metodologia de Resolu??o de Problemas no contexto da disciplina de Matem?tica com base em estudos de alguns autores. Nesse contexto, foram apresentadas as suas principais formas de abordagem, discriminadas todas as fases que comp?em a resolu??o de um problema matem?tico, bem como apresentadas as caracter?sticas e estrat?gias de planejamento, inser??o e desenvolvimento dessa metodologia pelos docentes, considerando aspectos relacionados ? sele??o dos problemas, ? maneira de apresenta??o dos mesmos, ? forma de organiza??o das atividades e ao papel do aluno no processo. Al?m disso, foram selecionadas, apresentadas e resolvidas quest?es que compuseram o ENEM no per?odo de 2009 a 2016 que abrangem a Compet?ncia de ?rea 2 da Matriz de Refer?ncia do ENEM, 'Utilizar o conhecimento geom?trico para realizar a leitura e a representa??o da realidade e agir sobre ela'. As quest?es foram resolvidas utilizando a metodologia de Resolu??o de Problemas, com a apresenta??o discriminada das fases da resolu??o. Em cada uma das quest?es s?o apresentadas as compet?ncias e habilidades a que est? relacionada, com o intuito de contextualiz?-la em rela??o ?s capacidades esperadas dos alunos para sua resolu??o. Com as an?lises e procedimentos realizados, ? poss?vel afirmar que a metodologia de Resolu??o de Problemas pode representar uma estrat?gia eficaz no processo ensino-aprendizagem de geometria, e pode servir de aux?lio ao trabalho do docente, de modo a proporcionar aos alunos o desenvolvimento das compet?ncias e habilidades deles esperadas, bem como garantir que esse processo ocorra de modo significativo e contextualizado / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o Matem?tica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / This work was developed based on the principles of Didactic Engineering, whose objective is to research and propose teaching methodologies for the discipline of Euclidean Plane Geometry of the Mathematic undergraduation course of Federal Unversity of the Jequitinhonha and Mucuri Valleys, with the support of the tools Geogebra dynamic geometry software. In addition, it seeks to detect the main difficulties in the teaching and learning of Plane Geometry and to propose methodologies that improve the learning of the concepts of Plane Geometry in the university. In order to do so, four didactic interventions were applied with the students, referring to the topics Axiomatic Treatment of Plane Geometry, Notable Quadrilaterals, Area of Plane Figures and Angles in Circumference, whose purpose was to provide the necessary knowledge to work with interactive dynamic geometry, always interconnected with the formal empirical knowledge od the discipline, and also preparing them for the teaching practice of the specific content. After detailed analysis, it was observed a notorious advance od the students in what referes to the understanding of the fundamental mathematical concepts of the topics addressed.

Les quadruplexes de guanines (G4) sont des structures d’ADN non-canoniques qui résultent de l’empilement hydrophobe de tétrades de guanines, stabilisé par des cations métalliques (tels que Na+ et K+). Il existe aujourd’hui un nombre croissant de preuves expérimentales qui attestent de l’implication des G4 dans d’importantes fonctions cellulaires corrélées à leur mécanisme de repliement/dépliement. Toutefois, très peu d’études ont abordé les aspects dynamiques de leur formation. Aussi, nous avons entrepris l’étude de plusieurs G4 mono-moléculaires à l’aide d’une nouvelle extension d’expériences de saut de température, capable de mesurer la dynamique de dénaturation thermique et de renaturation consécutive de l’ADN, sur une fenêtre temporelle allant de quelques millisecondes aux secondes. Les changements conformationnels ont été sondés par dichroïsme circulaire (CD) résolu en temps, connu pour être très sensible à l’arrangement des guanines dans les G4. Au préalable des études résolues en temps, en collaboration avec DISCO/SOLEIL, nous avons mesuré les spectres CD statiques de différentes séquences G4 présentant des topologies distinctes, comme celles des télomères humains, de l’aptamère de la thrombine ou des promoteurs de c-MYC. Nous avons observé des cinétiques de dénaturation et renaturation biphasiques avec des constantes de temps de quelques centaines de millisecondes et quelques secondes. Ces cinétiques dépendent fortement de l’amplitude du saut de température et de la concentration de cations métalliques. L’ensemble de ces observations suggère l’existence de plusieurs voies de repliement/dépliement des G4 sur des surfaces de potentiel très rugueuses. / Guanine-quadruplexes (G4) are non-canonical DNA structures that result from the hydrophobic stacking of guanine quartets stabilized by metal cations (typically Na+ and K+). There is now an increasing body of experimental evidence of their occurrence in important cell functions correlated to their folding/unfolding mechanisms. However, only few studies have addressed the dynamical aspect of their formation. In this context, we have undertaken the study of several intramolecular G4 with a novel extension of temperature-jump experiments capable to measure the thermal denaturation and the consecutive renaturation of DNA over a time window spanning a few ten milliseconds to seconds. Conformational changes have been monitored by time-resolved circular dichroism (CD), which is known to be sensitive to the chiral arrangement of guanines in the G4 scaffolds.Prior to time-resolved measurements, within the frame of a collaboration with DISCO/SOLEIL, we have performed static synchrotron radiation CD measurements on several short G4-forming sequences, such as human telomere, thrombin-binding aptamer and c-MYC promoter sequences, displaying distinct topologies. Denaturation and renaturation kinetics are found to exhibit biphasic decays with time constants of a few hundred milliseconds and a few seconds, respectively. Those kinetics depend strongly on the amplitude of the temperature jump and the concentration of cations. Taken together these observations suggest the existence of multiple folding pathways on extremely rugged landscapes.

Made available in DSpace on 2014-12-17T14:55:02Z (GMT). No. of bitstreams: 1 AgostinhoMBJ_ Ate_cap4.pdf: 2708709 bytes, checksum: 594003810b24cc08c34b728a0e492d9d (MD5) Previous issue date: 2005-01-14 / We propose a multi-resolution approach for surface reconstruction from clouds of unorganized points representing an object surface in 3D space. The proposed method uses a set of mesh operators and simple rules for selective mesh refinement, with a strategy based on Kohonen s self-organizing map. Basically, a self-adaptive scheme is used for iteratively moving vertices of an initial simple mesh in the direction of the set of points, ideally the object boundary. Successive refinement and motion of vertices are applied leading to a more detailed surface, in a multi-resolution, iterative scheme. Reconstruction was experimented with several point sets, induding different shapes and sizes. Results show generated meshes very dose to object final shapes. We include measures of performance and discuss robustness. / ? proposto um m?todo em multi-resolu??o para reconstru??o de superf?cies a partir de nuvens de pontos, que representam a superf?cie de um objeto no espa?o 3D. O m?todo proposto utiliza um conjunto de operadores de malha e regras simples de refinamento seletivo da malha, com um estrat?gia baseada nos mapas auto-organiz?veis de Kohonen. Basicamente, um esquema auto-adaptativo ? utilizado para mover iterativamente os v?rtices de uma malha inicial simples em dire??o ao conjunto de pontos, localizados idealmente na fronteira do objeto. Sucessivos refinamentos da malha e movimenta??es dos seus v?rtices s?o aplicados, levando a superf?cies cada vez mais detalhadas, num esquema iterativo em multi-resolu??o. Experimentos de reconstru??o foram realizados com diversos conjuntos de pontos, de diferentes formas e tamanhos. Os resultados apresentam malhas geradas que s?o muito pr?ximas das formas das superf?cies impl?citas nas amostras. S?o inclu?das medidas de erro e de qualidade e discutida a robustez do algoritmo.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-12T14:45:07Z No. of bitstreams: 1 JoseNilsonMorais_DISSERT.pdf: 3909471 bytes, checksum: 14009e64db90aa0692ab11c3603df407 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-18T15:25:55Z (GMT) No. of bitstreams: 1 JoseNilsonMorais_DISSERT.pdf: 3909471 bytes, checksum: 14009e64db90aa0692ab11c3603df407 (MD5) / Made available in DSpace on 2017-01-18T15:25:55Z (GMT). No. of bitstreams: 1 JoseNilsonMorais_DISSERT.pdf: 3909471 bytes, checksum: 14009e64db90aa0692ab11c3603df407 (MD5) Previous issue date: 2016-06-09 / Este trabalho tem como objetivo analisar ind?cios de conhecimentos matem?ticos, impl?citos nas opera??es comerciais de tr?s feirantes da feira livre localizada no Conjunto Habitacional de Nova Natal em Natal/RN. Para alcan?ar tal objetivo, buscou-se apoio nas concep??es de D?Ambrosio (2002) sobre Etnomatem?tica, nas propostas dos documentos oficiais, al?m da pesquisa qualitativa. Na parte emp?rica, usou-se procedimentos da Etnografia, como o di?rio de campo, a entrevista semiestruturada e a observa??o participante. A partir das an?lises dos dados coletados, elaborou-se um Caderno de Atividades como proposta para subsidiar o processo de ensino?aprendizagem em Matem?tica, norteada pelos pressupostos da Metodologia de ensino?aprendizagem?avalia??o atrav?s da Resolu??o de Problemas, nas concep??es de Allevato e Onuchic (2009) que auxiliaram na constitui??o do Produto Educacional ao n?vel da Educa??o B?sica. As situa??es?problema, inseridas no Produto Educacional, surgiram das interpreta??es dos conhecimentos matem?ticos, tomando como ponto de partida as compras realizadas pelos feirantes junto aos fornecedores at? as vendas destas mercadorias aos clientes na feira livre. Nesse contexto sociocultural nota-se ideias matem?ticas presentes, pois os feirantes fazem uso de um tipo de matem?tica espec?fica para solucionar seus problemas, inerentes nas compras e nas vendas: ao passar o troco e ao escolher a melhor ferramenta para quantificar as mercadorias, sem utilizar instrumentos aferidos, como a balan?a anal?gica ou digital. O Produto Educacional consiste em uma proposta alternativa para o processo de ensino?aprendizagem em Matem?tica, na inten??o de promover a amplia??o das habilidades voltadas para o c?lculo estimativo e a apropria??o dos conceitos matem?ticos aplicados em diversas situa??es, como tamb?m, nas outras ?reas do conhecimento al?m de ser, de fato, uma proposta para que os docentes implementem a??es did?ticos-pedag?gicas em sala de aula em Matem?tica. / This paper aims to analyze evidences of mathematical knowledge implicit in commercial operations of three market stallholders, located in Nova Natal Housing Complex, at Natal/RN. To achieve this goal, it was searched for theoretical support in the views of D'Ambrosio (2002) on Ethnomathematics, in the official documents? proposal, as well as in qualitative research. In the empirical part, it was used Ethnography procedures, such as diary, semi-structured interviews and participant observation. Based on the collected data?s analysis, it was elaborated an Activity Book as a proposal to support the process of teaching and learning in mathematics, guided by assumptions of teaching-learning-assessment methodology through the Solving Problem, based on the concepts of Onuchic & Allevato (2009) who assisted in the establishment of the Educational Product to the level of Basic Education. The problem-situations, inserted in the Product Educational, emerged from the interpretations of mathematical knowledge, has as a starting point from the purchases made by market stallholders for suppliers until the sales of these suppliers by the stallholders to the clients on the open market. In this sociocultural context, it can be noted the presence of mathematical ideas, since the stallholders make use of a specific type of mathematics to solve their inherent problems, on purchasing and sales: passing the change, choose the best tool to quantify the earnings, without using calibrated instruments as analog or digital scale. The Educational Product consists of an alternative proposal for the mathematical process of teaching and learning, intending to promote the application of abilities geared to estimated calculation, appropriation of mathematical concepts applied in different situations, as well as in other knowledge areas, besides it is, in fact, a proposal for the teachers to implement educational and pedagogical actions in the classroom.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-01T22:04:00Z No. of bitstreams: 1 MariaIsabelDaCostaPereira_DISSERT.pdf: 4073490 bytes, checksum: 6bcaf8852a0569a24e74e64e7e88282c (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-08T23:50:58Z (GMT) No. of bitstreams: 1 MariaIsabelDaCostaPereira_DISSERT.pdf: 4073490 bytes, checksum: 6bcaf8852a0569a24e74e64e7e88282c (MD5) / Made available in DSpace on 2017-11-08T23:50:58Z (GMT). No. of bitstreams: 1 MariaIsabelDaCostaPereira_DISSERT.pdf: 4073490 bytes, checksum: 6bcaf8852a0569a24e74e64e7e88282c (MD5) Previous issue date: 2017-07-26 / O presente trabalho de pesquisa, realizada em uma das escolas do munic?pio da cidade do Natal/RN, teve como objetivo investigar conhecimentos matem?ticos produzidos e/ou utilizados pelos estudantes da Educa??o de Jovens e Adultos ? EJA em suas profiss?es. Para alcan?ar tal objetivo, apoiadas nas concep??es d?ambrosianas de Etnomatem?tica e na Resolu??o de Problemas na concep??o de Lourdes Onuchic (2015). Para tanto, fez-se necess?rio ao longo do corpo desta pesquisa, partir dos conhecimentos emp?ricos, bem como, conhecimentos adquiridos a partir do senso comum, por vezes baseados na experi?ncia desses alunos, os quais devem permanecer em sintonia com os conhecimentos escolares. Quanto ? abordagem metodol?gica, fez-se uso dos procedimentos da Etnografia, como o di?rio de campo, a entrevista semiestruturada, aplica??o de question?rios e a observa??o participante, os quais nos auxiliaram nas an?lises das concep??es dos conhecimentos matem?ticos utilizados e/ou produzidos pelos estudantes da EJA em suas profiss?es. A partir das an?lises dos dados coletados, produzimos um material did?tico, denominado de Produto Educacional, produ??o t?cnica indispens?vel para a conclus?o do Mestrado Profissional em Ensino do PPGECNM ? Programa de P?s-Gradua??o em Ensino de Ci?ncias Naturais e Matem?tica da UFRN, devendo ser uma ferramenta de natureza educacional, que dever? ser disseminado, analisado e utilizado por outros professores. Esse produto foi composto por situa??es-problema relacionados ? viv?ncia profissional de um dos discentes da escola com o qual se realizou a pesquisa, uma vez que nela foi poss?vel perceber ideias matem?ticas presentes, em diversos momentos na execu??o de sua atividade profissional. / Our research work, carried out in one of the schools of the city of Natal/RN, aimed to investigate mathematical knowledge produced and/or used by students of EJA in their professions. In order to achieve this goal, we support ourselves in the Ambrosian conceptions of Ethnomathematics and in Problem Solving in the conception of Lourdes Onuchic (2015). In order to do so, it was necessary throughout the body of this research, starting from the empirical knowledge, as well as knowledge acquired from common sense, sometimes based on the experience of these students, who must remain in tune with the school knowledge. As for the methodological approach, we used the Ethnography procedures, such as field diary, semistructured interview, questionnaire application and participant observation, which helped us to analyze the conceptions of mathematical knowledge used and / or produced by EJA students In their professions. Based on the analysis of the data collected, we produced a didactic material, called the Educational Product, an indispensable technical production for the conclusion of the Professional Master in Teaching of PPGECNM - Post-Graduation Program in Teaching of Natural Sciences and Mathematics of UFRN. An educational tool that should be disseminated, analyzed and used by other teachers. This product was composed of problem situations related to the professional experience of one of the students of the school to which we conducted the research, in which we could perceive present mathematical ideas, at various moments in the execution of their professional activity.