Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-09-19T21:40:47Z No. of bitstreams: 1 NyladihTheodoryClementeMattosDeSouza_TESE.pdf: 11583888 bytes, checksum: 81d8b2a2eaea96b182493c2079fac5b9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-09-21T17:08:29Z (GMT) No. of bitstreams: 1 NyladihTheodoryClementeMattosDeSouza_TESE.pdf: 11583888 bytes, checksum: 81d8b2a2eaea96b182493c2079fac5b9 (MD5) / Made available in DSpace on 2017-09-21T17:08:30Z (GMT). No. of bitstreams: 1 NyladihTheodoryClementeMattosDeSouza_TESE.pdf: 11583888 bytes, checksum: 81d8b2a2eaea96b182493c2079fac5b9 (MD5) Previous issue date: 2016-12-16 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / No presente trabalho, apresentamos uma an?lise, via teoria de informa??o no contexto da estat?stica generalizada de Kaniadakis, de conjuntos generalizados de Cantor (tipo d-(m,r)), e do cromossomo Y do DNA humano. Os objetivos de nosso estudo s?o determinar, atrav?s da k-entropia (que ? adequada para sistemas com correla??es de longo alcance) as leis de escala, comportamentos auto-similares e dimens?es fractais caracter?sticas desses dois sistemas: um determin?stico, e outro encontrado na natureza. Para o conjunto generalizado de Cantor, determinamos anal?tica e numericamente os valores de k que tornam a entropia linear com o tamanho do sistema, obtendo uma rela??o entre k (o par?metro de deforma??o), a dimens?o fractal (df) e a dimens?o de suporte (d). Usando o conceito de blocos, mostramos que para intervalos arbitr?rios de L (tamanho do sistema), e s (tamanho do bloco de informa??o) a k-entropia apresenta comportamento auto-similar, bem como um comportamento tipo lei de pot?ncia com respeito a s. Na an?lise entr?pica do cromossomo Y observamos que, independentemente do valor de k, a entropia de Kaniadakis, quando apresentada em fun??o do tamanho do sistema, apresenta em geral (mas n?o sempre) tr?s regimes: um oscilat?rio, um monotonicamente linear, e outro de satura??o. Este ?ltimo ? resultado do fato de que a entropia ? extensiva, e o sistema ? finito. O segundo regime, por sua vez, denota uma ordem interna aparente. No entanto, n?o foi poss?vel observar um comportamento auto-similar. Nossa an?lise restringiu-se ? parte codificante do cromossomo Y, onde desprezamos os trechos n?o-codificantes.

Submitted by PPG Comunica??o Social (famecos-pg@pucrs.br) on 2018-04-27T18:10:26Z No. of bitstreams: 1 RENATA_ANDREONI_TES.pdf: 4557075 bytes, checksum: 0e51179b7449adc96aa68d424586c772 (MD5) / Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-05-10T14:39:26Z (GMT) No. of bitstreams: 1 RENATA_ANDREONI_TES.pdf: 4557075 bytes, checksum: 0e51179b7449adc96aa68d424586c772 (MD5) / Made available in DSpace on 2018-05-10T15:07:46Z (GMT). No. of bitstreams: 1 RENATA_ANDREONI_TES.pdf: 4557075 bytes, checksum: 0e51179b7449adc96aa68d424586c772 (MD5) Previous issue date: 2018-03-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / (Re) Thinking about the memory and communication interface, based on the assumptions of the New Theory of Communication - NTC (MARCONDES FILHO, 2013a; 2013b; 2010a; 2010b; 2008; 2004) and the Philosophy of Henri Bergson (2006; 2005a; 2005b; 1999); 1988) is the journey we propose in this research. To accomplish this, in the light of complex thinking (MORIN, 2015a, 2015b, 2013, 2008), we set three objectives: To critically discuss the proposed interfaces between memory and communication, under the organizational memory configuration; to show possible dimensions that reveal how the organizational memory is configured, considering the academic propositions and their practices in the companies; (re) dimensioning the memory in the Communication, in addition to an instrumental approach. These objectives are designed to help us understand the landscapes that unveil at each step. The first landscape of this course is constituted by a critical and complex perspective of the praxis of academic productions and actions of different organizations on possible interfaces between memory and communication. For this, we consider the configuration of organizational memory, under which we show the predominance of the functional communication approach (SODR?, 2014a). In the second landscape we intertwine the NTC with the Bergsonian philosophical thought, constituting an ontological path for understanding memory in Communication. It is a theoretical study, in which we defend the thesis that the interface memory and communication can be established beyond a transmissive and instrumental relationship. Our efforts are aimed at developing an awareness to (re) think the communicational approach, having memory as a ubiquitous dimension in the relationships we establish in the continuous and indeterminate movement of life (I / Other). / (Re) penser l?interface m?moire et communication, ? partir des hypoth?ses de la Nouvelle Th?orie de la Communication - NTC (MARCONDES FILHO, 2013e; 2013b; 2010a; 2010b; 2008; 2004) et de la Philosophie de Henri Bergson (2006, 2005a; 2005b; 1999 1988) est le parcours que nous proposons dans cette recherche. Pour ce faire, ? la lumi?re de la pens?e complexe (Morin, 2015e; 2015b; 2013; 2008), nous avons ?tabli trois objectifs: discuter de fa?on critique les interfaces propos?es entre la m?moire et la communication, dans la configuration de la m?moire organisationnelle; mettre en ?vidence les dimensions possibles qui r?v?lent la constituition de la m?moire organisationnelle, en consid?rant les propositions acad?miques et leurs pratiques dans les entreprises; (re) dimensionner la m?moire dans la Communication, en plus d'une approche instrumentale. Ces objectifs sont con?us pour nous aider ? comprendre les paysages qui se d?roulent ? chaque ?tape. Le premier paysage de ce parcours se compose d'une perspective critique et complexe de la praxis des productions acad?miques et les actions des diff?rentes organisations sur les possibles interfaces entre la m?moire et de la communication. Pour cela, nous consid?rons la configuration de la m?moire organisationnelle, sous laquelle nous montrons la pr?dominance de l'approche de la communication fonctionnelle (SODR?, 2014a). Le second paysage parcourut d?veloppe une (re) tessiture entre la NTC et la pens?e bergsonienne, ce qui constitue un chemin ontologique ? la compr?hension de la m?moire en Communication. Il s?agit d?une ?tude th?orique dans laquelle nous soutenons la th?se, selon laquelle, l?interface m?moire et communication peut s'?tablir au-del? d'une relation transmissible et instrumentale. Nos efforts visent ? d?velopper une prise de conscience pour (re) penser l'approche communicative, ayant la m?moire comme dimension omnipr?sente dans les relations ?tablies dans le mouvement continu et ind?termin? de la vie (Moi/ Autre). / (Re)Pensar a interface mem?ria e comunica??o, partindo dos pressupostos da Nova Teoria da Comunica??o ? NTC (MARCONDES FILHO, 2013a; 2013b; 2010a; 2010b; 2008; 2004) e da Filosofia de Henri Bergson (2006; 2005a; 2005b; 1999; 1988), ? a jornada que propomos nesta pesquisa. Para realiz?-la, ? luz do pensamento complexo (MORIN, 2015a; 2015b; 2013; 2008), estabelecemos tr?s objetivos: discutir criticamente as interfaces propostas entre mem?ria e comunica??o, sob a configura??o da mem?ria organizacional; evidenciar poss?veis dimens?es que revelam como se configura a mem?ria organizacional, considerando as proposi??es acad?micas e suas pr?ticas nas empresas; e (re)dimensionar a mem?ria na Comunica??o para al?m de uma abordagem instrumental. Esses objetivos s?o tra?ados para nos auxiliarem a compreender as paisagens que se descortinam a cada passo. A primeira paisagem deste percurso ? constitu?da por uma perspectiva cr?tica e complexa da pr?xis de produ??es acad?micas e de a??es de diferentes organiza??es sobre poss?veis interfaces entre mem?ria e comunica??o. Para tanto, consideramos a configura??o da mem?ria organizacional, sob a qual evidenciamos o predom?nio da abordagem da comunica??o funcional (SODR?, 2014a). Na segunda paisagem percorrida, desenvolvemos uma (re)tecitura entre a NTC e o pensamento bergsoniano, constituindo um caminho ontol?gico para a compreens?o da mem?ria na Comunica??o. Trata-se de um estudo te?rico, no qual defendemos a tese que a interface mem?ria e comunica??o pode se estabelecer para al?m de uma rela??o transmissiva e instrumental. Nossos esfor?os s?o destinados ao desenvolvimento de uma consci?ncia para (re)pensarmos a abordagem comunicacional, tendo a mem?ria como dimens?o onipresente nas rela??es que estabelecemos no movimento cont?nuo e indeterminado da vida (Eu/Outro).

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-18T21:55:11Z No. of bitstreams: 1 IsacRufinoDeAraujo_DISSERT.pdf: 2304915 bytes, checksum: 003585d70e775edd0ae4d2a5c516fdd1 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-18T23:33:16Z (GMT) No. of bitstreams: 1 IsacRufinoDeAraujo_DISSERT.pdf: 2304915 bytes, checksum: 003585d70e775edd0ae4d2a5c516fdd1 (MD5) / Made available in DSpace on 2016-03-18T23:33:16Z (GMT). No. of bitstreams: 1 IsacRufinoDeAraujo_DISSERT.pdf: 2304915 bytes, checksum: 003585d70e775edd0ae4d2a5c516fdd1 (MD5) Previous issue date: 2015-02-19 / Esta pesquisa teve como objetivo geral verificar a qualidade motivacional dos licenciandos em m?sica em quatro universidades p?blicas do Nordeste, sob a perspectiva da Teoria da Autodetermina??o (TAD). Proposta por Edward Deci e Richard Ryan (1985, 2000, 2008a, 2008b), a TAD abrange os aspectos qualitativos da motiva??o e afirma que todos os indiv?duos t?m uma propens?o natural ? autorregula??o, por isso ela adota o conceito de internaliza??o, representada por meio de um continuum de autodetermina??o previsto na miniteoria da integra??o organ?smica. A presente pesquisa ? de natureza descritiva, explorat?ria e correlacional. Como t?cnica de coleta de dados, foi aplicado um question?rio de autorrelato, a Escala de Motiva??o Acad?mica (EMA), traduzida e validada por Guimar?es e Bzuneck (2008), a qual permite verificar os tipos de motiva??o conforme o continuum de autodetermina??o. Nesta aplica??o, o instrumento apresentou evid?ncias de validade satisfat?rias, com boa consist?ncia interna e correla??es de fracas a moderadas. Os dados obtidos da amostra de 380 licenciandos em m?sica foram analisados atrav?s da estat?stica descritiva e inferencial, por meio de alguns procedimentos: frequ?ncias, m?dias, desvio padr?o, an?lise fatorial, an?lise de consist?ncia interna por meio do alpha de Cronbach, an?lise de correla??o de Pearson e an?lise de vari?ncia. Os dados apontam as maiores m?dias na avalia??o das formas de motiva??o mais autodeterminadas e as m?dias mais baixas na avalia??o da desmotiva??o e das formas menos aut?nomas de motiva??o. Grande parte dos alunos revelou forte inten??o de concluir o curso. Apresentaram menor motiva??o aut?noma e maior desmotiva??o os alunos com inten??o de atuar em outras ?reas, que j? passaram pelo est?gio e que est?o no curso porque n?o tiveram outra op??o. Conclu?mos que o licenciando em m?sica, representado nesta amostra, apresenta boa qualidade motivacional, no entanto, com o passar do tempo h? uma tend?ncia em diminuir a motiva??o aut?noma mediante as press?es inerentes a um curso superior. Neste sentido, os cursos devem criar estrat?gias para manter o comportamento autodeterminado nos alunos e fortalecer a motiva??o aut?noma fazendo-os perceber import?ncia, valor e significado no curso. / This research had as main aim to verify the motivational quality of music students at four public universities in the Northeast of Brazil, based on the Self-Determination Theory (SDT). This perspective was proposed by Edward Deci and Richard Ryan (1985, 2000, 2008a, 2008b), and considers the qualitative aspects of motivation. It defends that the individuals have a natural tendency to self-regulation; it adopts the concept of internalizations through a continuum of self-determination conceived in the mini-theory of organismic integration. The research presents a descriptive, exploratory and correlational approach. To collect data, it was submitted a self-report questionnaire, based on the Academic Motivational Scale, translated and validated by Guimar?es and Bzuneck (2008), which allow us to verify the motivation types according to a selfdeterminational continuum. According to this application, the instrument has shown evidence of satisfactory validity, with a good internal consistence and correlations from weak to moderate scale. The obtained data were collected from 380 music students, analyzed through a descriptive and inferential statistics, considering a few procedures: frequencies, averages, standard deviation, factorial analysis, internal consistence analysis through Cronbach Alpha, Pearson?s correlational analysis and variance analysis. The analyzed data show that high averages in the evaluation of self-determined motivation and low evaluation in demotivation and less autonomy motivation. Many students revealed strong intention to conclude the course. It was identified less autonomous motivation and more motivation among the students with intention to work in other areas, some of them concluded the final training process in Music Course, and say that they are in this course because they had no other option. We conclude that those graduated in Music Course, represented in this sample, show a good motivational quality. But after a few time there is a tendency in decreasing autonomous motivation because of some requirements of an academic course. In this sense, the courses must create strategies to maintain a self-determined behavior so that students can realize their autonomous motivation, identifying its importance, value and meaning along the Course.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-10T16:09:53Z No. of bitstreams: 1 SeverinoCarlosGomes_TESE.pdf: 2702939 bytes, checksum: 3f713500511e8e0639647767f0520f61 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-10T19:55:22Z (GMT) No. of bitstreams: 1 SeverinoCarlosGomes_TESE.pdf: 2702939 bytes, checksum: 3f713500511e8e0639647767f0520f61 (MD5) / Made available in DSpace on 2017-02-10T19:55:22Z (GMT). No. of bitstreams: 1 SeverinoCarlosGomes_TESE.pdf: 2702939 bytes, checksum: 3f713500511e8e0639647767f0520f61 (MD5) Previous issue date: 2016-08-10 / O presente trabalho tem como objeto de estudo teorias de aprendizagem e suas implica??es no processo de ensino e de aprendizagem de matem?tica. Al?m disso, este estudo ? motivado pela busca de elementos caracter?sticos de uma teoria de aprendizagem e pela an?lise se h? consenso na comunidade de pesquisadores da ?rea sobre estes elementos constituintes das teorias. ? ineg?vel a import?ncia das teorias de aprendizagem para o desenvolvimento de diversos elementos do processo educacional na escola contempor?nea. N?o ? diferente no caso particular da Educa??o Matem?tica. H? uma quantidade consider?vel de pesquisas envolvendo teorias de aprendizagem e suas implica??es para a pr?tica da sala de aula. Cada uma delas persegue diferentes objetivos e enfatiza diferentes aspectos da aprendizagem. De certo modo, at? mesmo o que ? aprendizagem em si varia de uma teoria para outra. Neste sentido, este trabalho constitui-se em uma apresenta??o e an?lise das semelhan?as e diferen?as entre algumas teorias em voga na Educa??o Matem?tica, com aten??o particular aos conceitos fundamentais da The Theory of Knowledge Objectification ou, simplesmente, theory of objectification (Teoria da Objetifica??o) e da Pedagogia Freireana e suas implica??es para a aprendizagem dos indiv?duos. Devido ao cunho te?rico da pesquisa e a extensa produ??o de artigos, livros, disserta??es e teses sobre estas duas teorias optamos pela metodologia da pesquisa bibliogr?fica no qual a leitura ? a ferramenta principal para an?lise e interpreta??o dos dados. Por fim, nossa tese concentra-se no fato de que teorias de aprendizagem podem diferir entre si tanto de modo estrutural quanto de modo conceitual. Por diferen?a estrutural, entendemos que no??es fundamentais de uma teoria n?o obrigatoriamente existem ou s?o consideradas em outra teoria; ou, quando s?o consideradas, podem ter ou n?o a mesma relev?ncia. Por distin??o conceitual, entendemos mesma formula??o verbal com significados distintos nas teorias concorrentes. Mesmo assim, teorias podem guardar semelhan?as significantes em suas no??es fundamentais. / This work has as object of study theories of learning and their implications for the process of teaching and learning of mathematics. It is motivated by the search for characteristic elements of a theory of learning and, also, by the analysis of the possible consensus in the researcher?s community of the area regarding the elements that constitute these theories. We cannot deny the importance of the Learning Theories for the development of various elements of the educational process in contemporary schools ? it is not different either in the case of Mathematics Education. There is a considerable amount of research involving Learning Theories and their implications for practicing in classroom, each one of them, we can say, pursues different objectives and emphasizes different aspects of learning. In a certain way, even the definition of learning itself varies from one theory to another. In this sense, this work is a presentation and analysis of the similarities and differences between some theories in Mathematics Education, with special attention to the fundamental concepts of The Theory of Knowledge Objectification or, simply, Theory of Objectification, and to Paulo Freirean Pedagogy within its implications for the learning process. Because of the theoretical nature of this research ? and the extensive list of articles, books, dissertations about the theories here involved ? we have decided for a bibliographical research in which the act of reading is the main tool for analysis and interpretation of data. Finally, our thesis focuses on the fact that learning theories can differ both as a structural manner conceptual mode. For structural difference we understand that fundamental notions of a theory does not necessarily exist or are considered another theory; or, when considered may have or not the same importance. On the conceptual distinction we understand same verbal formulation with different meanings in competing theories. Still, theories can save significant similarities in their basic concepts.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-04-12T23:52:05Z No. of bitstreams: 1 EXPRESS?O DO FUTURO VERBAL NA ESCRITA ESCOLAR DE IRAR? - BA.pdf: 862877 bytes, checksum: 69a7a8273f3d6a0cbc5ba146504ce42d (MD5) / Made available in DSpace on 2016-04-12T23:52:05Z (GMT). No. of bitstreams: 1 EXPRESS?O DO FUTURO VERBAL NA ESCRITA ESCOLAR DE IRAR? - BA.pdf: 862877 bytes, checksum: 69a7a8273f3d6a0cbc5ba146504ce42d (MD5) Previous issue date: 2015-03-16 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / The verbal future tense in Portuguese is a variable phenomenon currently expressed by the verb forms: the simple future tense, the periphrasis with go + infinitive, the indicative present tense, and the gerundive future form. Among them, the simple future tense is the standard way, and the periphrastic future form is considered by grammarians like a colloquial form of the language. Several studies (GIBBON, 2000; OLIVEIRA, 2006; BRAGAN?A, 2008; SILVA, 2010; TESCH 2011; SANTOS, 2012) have attested to this variable phenomenon throughout history of the Portuguese language and point to the implementation of the periphrastic way of to go + infinitive as a possible replacement of the simple future tense. According to these studies, this change is almost complete in speech and is already invading writing. With this information about the uses of the verbal future tense in Portuguese, in this study, we analyzed data of high school students from public and private schools in the city of Irar?-Ba, within a variational and functionalist perspective, with a synchronic study, in order to observe the presence of the periphrastic future form in school texts, considering the process of grammaticalization. The results of the verbal future tense in school writing of the first, second and third classes of high school, with the control of various groups of linguistic and sociolinguistic, factors, showed that the variant that more customarily occurs in spoken language (the periphrastic future form) is also present in written language. The results show that the phenomenon under study is motivated by factors such as type of school, verbal paradigm, residential area, syntactic status of verb, verb conjugation, thematic role of the subject, semantic nature of the verb, type of subject and type of verb. It was evident through the review that there is an ongoing change process towards the simple future form, more used in texts written by speakers said "cults", be replaced by the periphrastic future form, commonly founded in speech, suffering less normative pressures. / O futuro verbal na l?ngua portuguesa ? um fen?meno vari?vel que, atualmente, ? expresso pelas formas verbais: futuro simples, per?frase com ir + infinitivo, presente do indicativo e futuro gerundivo. Dentre elas, o futuro simples ? a forma padr?o, enquanto o futuro perifr?stico ? considerado pelos gram?ticos uma forma coloquial da l?ngua. V?rios estudos (GIBBON, 2000; OLIVEIRA, 2006; BRAGAN?A, 2008; SILVA, 2010; TESCH 2011; SANTOS, 2012) t?m atestado esse fen?meno vari?vel ao longo da hist?ria da l?ngua portuguesa e apontam para a implementa??o da forma perifr?stica com ir + infinitivo como poss?vel substituta da forma de futuro simples. Segundo tais estudos, esta mudan?a est? quase conclu?da na fala e j? est? invadindo a escrita. De posse dessas informa??es acerca dos usos do futuro verbal na l?ngua portuguesa, neste estudo, faz-se uma an?lise de reda??es de alunos de Ensino M?dio de escolas p?blicas e particulares na cidade de Irar?-Ba, dentro de uma perspectiva variacionista e funcionalista, a partir de um estudo sincr?nico, com o intuito de observar a presen?a do futuro perifr?stico em reda??es escolares, considerando o seu processo da gramaticaliza??o. Os resultados encontrados sobre o futuro verbal nas reda??es escolares das turmas de primeiro, segundo e terceiro anos do Ensino M?dio, a partir do controle de v?rios grupos de fatores lingu?sticos e sociolingu?sticos, demonstraram que a variante que ocorre mais costumeiramente na l?ngua falada (futuro perifr?stico) tamb?m se faz presente na l?ngua escrita. Os resultados revelam que o fen?meno em estudo ? motivado por fatores como tipo de escola, paradigma verbal, zona residencial, estatuto sint?tico do verbo, conjuga??o verbal, papel tem?tico do sujeito, natureza sem?ntica do verbo, tipo de sujeito e tipo de verbo. Ficou evidente, atrav?s da an?lise realizada, que h? um processo de mudan?a em curso no sentido de a forma de futuro simples, mais usada em textos escritos por falantes ditos ?cultos?, ser substitu?da pela forma perifr?stica, comumente encontrada na fala, que sofre menos press?es normativas.

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2015-05-26T12:50:47Z No. of bitstreams: 1 469261 Texto Completo.pdf: 987194 bytes, checksum: 56c8d3a6f2f7557a0832488fe7bbc841 (MD5) / Made available in DSpace on 2015-05-26T12:50:47Z (GMT). No. of bitstreams: 1 469261 Texto Completo.pdf: 987194 bytes, checksum: 56c8d3a6f2f7557a0832488fe7bbc841 (MD5) Previous issue date: 2015-04-27 / Inside the field ofthe history of communication theories, this dissertation proposes a documental research of the Americansociologist Charles Horton Cooley. Published mainly in the first decades of the twentieth century, his work is one of the first to address the communication media as a distinguishable object of study in the sociological field, dealing both with its symbolic and private instance, as its technical and public instance. The dissertation observes the theoretical context to lecture, write, analyze and discuss the concepts and characteristics of the communication presented by Cooley.Based on the analysis made by Hans-Joachim Schubert, it is identified in Cooley?s social theory the pragmatic vision that correlates the subjective, objective and social knowledgethrough meaningful symbols. What follows, then, is that Cooley gave to communication the role of the knowledge, the individual (self) andthe societyfoundation; first forits role in the production of symbolic meanings, second for developing the subject of knowledge, third for making the sociability to spring out of the human nature. / Inserindo-seno campo da hist?ria das teorias da comunica??o, esta disserta??o ? uma pesquisa documental da contribui??o deixada pelosoci?logo estadunidense Charles Horton Cooley. Publicada nas primeiras d?cadas do s?culo XX, sua obra ? uma das pioneiras a tratar a comunica??o como um objeto de estudo distingu?vel no campo sociol?gico, versando tanto sobre sua inst?ncia simb?lica e individual, quanto sua inst?ncia t?cnica e social. A disserta??o resultante da pesquisa observou o contexto hist?rico e te?rico para elencar, compor, analisar e discutir os conceitos e caracter?sticas da comunica??o apresentados por Cooley.Partindo da aprecia??o feita por Hans-Joaquim Schubert, identifica-se na teoria social do soci?logo estadunidense a epistemologia pragm?tica que correlaciona os conhecimentos subjetivo, objetivo e social atrav?s de s?mbolos significativos. Cooley atribui ? comunica??o o papel de fundamentodo conhecimento, do indiv?duo (self) eda sociedade; primeiro por atribuir-lhe a produ??o dos significados simb?licos, segundo pora responsabilizar pelo desenvolvimentodo sujeito do conhecimento,terceiro por ela fazer a sociabilidade aflorar da pr?pria natureza humana.

Submitted by Helmut Patrocinio (hell.kenn@gmail.com) on 2017-12-01T23:43:39Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Heloisa_Onias_Dissertacao_2012.pdf: 9805428 bytes, checksum: 00e0f3bac6584320107351966c70da69 (MD5) / Approved for entry into archive by Ismael Pereira (ismael@neuro.ufrn.br) on 2017-12-04T12:33:01Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Heloisa_Onias_Dissertacao_2012.pdf: 9805428 bytes, checksum: 00e0f3bac6584320107351966c70da69 (MD5) / Made available in DSpace on 2017-12-04T12:33:37Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Heloisa_Onias_Dissertacao_2012.pdf: 9805428 bytes, checksum: 00e0f3bac6584320107351966c70da69 (MD5) Previous issue date: 2012-08 / O circuito RLD, formado por um resistor, um indutor e um diodo em s?rie, apresenta uma din?mica muito rica quando for?ado por uma tens?o externa harm?nica e vem sendo estudado h? d?cadas. Contudo, ainda existem t?picos em din?mica n?o-linear sendo estudados com variantes deste circuito. Varreduras nos par?metros de controle podem fazer com que esse sistema oscile eletronicamente entre regi?es peri?dicas e regi?es ca?ticas. O diodo ? o elemento n?o linear respons?vel pelo surgimento do caos. Utilizando um modelo de capacit?ncia n?o linear para descrever o comportamento do diodo, podemos escrever as equa??es para esse sistema e estudar a sua din?mica numericamente. Nosso principal objetivo foi o estudo de expoentes cr?ticos complexos em bifurca??es din?micas. Para isso, realizamos um estudo num?rico do circuito RLD for?ado senoidalmente utilizando como par?metros de controle a frequ?ncia e a amplitude da tens?o de entrada. Constru?mos, a partir das s?ries temporais da corrente total e da tens?o no diodo, diagramas de bifurca??o com diferentes cortes estrobosc?picos, que apresentam cascata de dobramento de per?odo, janelas peri?dicas e transi??o intermitente. Tamb?m realizamos estudos num?ricos do comportamento da m?dia na regi?o de transi??o caos-peri?dico na busca de encontrar um expoente cr?tico caracter?stico e oscilas??es na m?dia, elementos que j? foram observados no mapa log?stico. N?o foram poss?veis observar numericamente as oscila??es, mas observamos um decaimento exponencial com expoente cr?tico de aproximadamente 0,5. Montamos um sistema de controle, aquisi??o e tratamento de dados experimentais no qual ? poss?vel a realiza??o remota de experimentos simult?neos com dois circuitos diferentes. Obtivemos diagramas de bifurca??es experimentais nos quais observamos que o sistema apresentahisterese e alta sensibilidade ?s condi??es do experimento como, por exemplo, o passo de varredura do par?metro de controle. / The RLD circuit, formed by a resistor, an inductor and a diode in series, displays a very rich dynamics when forced by an external harmonic voltage, and it has being studied for decades. However, there are some topics in nonlinear dynamics that are still studied with variants of this circuit nowadays. Changes in the control parameters may cause electronic oscillations between regular and chaotic regions.The diode is the nonlinear element responsible for the appearance of chaos. Using a nonlinear capacitance model to describe the behavior of the diode, we can write the equations for this system and study its dynamics numerically. Our main objective was the study of critical exponents in complex dynamic bifurcations. For that, we did a numerical study of the RLD circuit forced sinusoidally using as control parameters the amplitude of the input voltage and the frequency. We made, from the time series obtained, bifurcation diagrams with different stroboscopic cuts, which have cascade of period-doubling, periodic windows and intermittent transition. We also did numerical studies of the average behavior in the periodic-chaos transition region searching for characteristic critical exponent and oscilas??es on average, elements that have been observed in the logistic map. It was not possible to observe the oscillations numerically, but we observed an exponential decay with critical exponent of approximately 0.5. We set up a system able to control, acquire and process experimental data making it possible to perform remote simultaneous experiments with two different circuits. We have obtained experimental diagrams bifurcations in which we observe that the system has hysteresis and high sensitivity to the conditions of the experiment such as the step of scanning the control parameter.

Made available in DSpace on 2015-03-03T15:16:22Z (GMT). No. of bitstreams: 1 EdemersonSBM.pdf: 812078 bytes, checksum: 167690407a20b9462083f00be2b0a159 (MD5) Previous issue date: 2007-12-28 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / In this work, the study of some complex systems is done with use of two distinct procedures. In the first part, we have studied the usage of Wavelet transform on analysis and characterization of (multi)fractal time series. We have test the reliability of Wavelet Transform Modulus Maxima method (WTMM) in respect to the multifractal formalism, trough the calculation of the singularity spectrum of time series whose fractality is well known a priori. Next, we have use the Wavelet Transform Modulus Maxima method to study the fractality of lungs crackles sounds, a biological time series. Since the crackles sounds are due to the opening of a pulmonary airway bronchi, bronchioles and alveoli which was initially closed, we can get information on the phenomenon of the airway opening cascade of the whole lung. Once this phenomenon is associated with the pulmonar tree architecture, which displays fractal geometry, the analysis and fractal characterization of this noise may provide us with important parameters for comparison between healthy lungs and those affected by disorders that affect the geometry of the tree lung, such as the obstructive and parenchymal degenerative diseases, which occurs, for example, in pulmonary emphysema. In the second part, we study a site percolation model for square lattices, where the percolating cluster grows governed by a control rule, corresponding to a method of automatic search. In this model of percolation, which have characteristics of self-organized criticality, the method does not use the automated search on Leaths algorithm. It uses the following control rule: pt+1 = pt + k(Rc ? Rt), where p is the probability of percolation, k is a kinetic parameter where 0 < k < 1 and R is the fraction of percolating finite square lattices with side L, LxL. This rule provides a time series corresponding to the dynamical evolution of the system, in particular the likelihood of percolation p. We proceed an analysis of scaling of the signal obtained in this way. The model used here enables the study of the automatic search method used for site percolation in square lattices, evaluating the dynamics of their parameters when the system goes to the critical point. It shows that the scaling of , the time elapsed until the system reaches the critical point, and tcor, the time required for the system loses its correlations, are both inversely proportional to k, the kinetic parameter of the control rule. We verify yet that the system has two different time scales after: one in which the system shows noise of type 1 f , indicating to be strongly correlated. Another in which it shows white noise, indicating that the correlation is lost. For large intervals of time the dynamics of the system shows ergodicity / Neste trabalho, o estudo de alguns sistemas complexos ? feito com a utiliza??o de dois procedimentos distintos. Na primeira parte, estudamos a utiliza??o da transformada Wavelet na an?lise e caracteriza??o (multi)fractal de s?ries temporais. Testamos a confiabilidade do M?todo do M?ximo do M?dulo da Transformada Wavelet (MMTW) com rela??o ao formalismo multifractal, por meio da obten??o do espectro de singularidade de s?ries temporais cuja fractalidade ? bem conhecida a priori. A seguir, usamos o m?todo do m?ximo do m?dulo da transformada wavelet para estudar a fractalidade dos ru?dos de crepita??o pulmonar, uma s?rie temporal biol?gica. Uma vez que a crepita??o pulmonar se d? no momento da abertura de uma via a?rea ? br?nquios, bronqu?olos e alv?olos ? que estava inicialmente fechada, podemos obter informa??es sobre o fen?meno de abertura em cascata das vias a?reas de todo o pulm?o. Como este fen?meno est? associado ? arquitetura da ?rvore pulmonar, a qual apresenta geometria fractal, a an?lise e caracteriza??o da fractalidade desse ru?do pode nos fornecer importantes par?metros de compara??o entre pulm?es sadios e aqueles acometidos por patologias que alteram a geometria da ?rvore pulmonar, tais como as doen?as obstrutivas e as de degenera??o parenquimatosa, que ocorre, por exemplo, no enfisema pulmonar. Na segunda parte, estudamos um modelo de percola??o por s?tios em rede quadrada, onde o aglomerado de percola??o cresce governado por uma regra de controle, correspondendo a um m?todo de busca autom?tica. Neste modelo de percola??o, que apresenta caracter?sticas de criticalidade auto-organizada, o m?todo de busca autom?tica n?o usa o algoritmo de Leath. Usa-se a seguinte regra de controle: pt+1 = pt +k(Rc ?Rt), onde p ? a probabilidade de percola??o, k ? um par?metro cin?tico onde 0 < k < 1 e R ? a fra??o de redes quadradas finitas de lado L, LxL, percolantes. Esta regra fornece uma s?rie temporal correspondente ? evolu??o din?mica do sistema, em especial da probabilidade de percola??o p. ? feita uma an?lise de escalas do sinal assim obtido. O modelo aqui utilizado permite que o m?todo de busca autom?tica para a percola??o por s?tios em rede quadrada seja, per si, estudado, avaliando-se a din?mica dos seus par?metros quando o sistema se aproxima do ponto cr?tico. Verifica-se que os escalonamentos de ?, o tempo decorrido at? que o sistema chegue ao ponto cr?tico, e de tcor, o tempo necess?rio para que o sistema perca suas correla??es, s?o, ambos, inversamente proporcionais a k, o par?metro cin?tico da regra de controle. Verifica-se ainda que o sistema apresenta duas escalas temporais distintas depois de ? : uma em que o sistema mostra ru?do do tipo 1 f? , indicando ser fortemente correlacionado; outra em que aparece um ru?do branco, indicando que se perdeu a correla??o. Para grandes intervalos de tempo a din?mica do sistema mostra que ele se comporta como um sistema erg?dico

Made available in DSpace on 2014-12-17T14:55:09Z (GMT). No. of bitstreams: 1 DanielSAA_TESE_inicio_pag67.pdf: 3521346 bytes, checksum: 030bba7c8ca800b8151b345676b6759c (MD5) Previous issue date: 2013-03-18 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Currently, one of the biggest challenges for the field of data mining is to perform cluster analysis on complex data. Several techniques have been proposed but, in general, they can only achieve good results within specific areas providing no consensus of what would be the best way to group this kind of data. In general, these techniques fail due to non-realistic assumptions about the true probability distribution of the data. Based on this, this thesis proposes a new measure based on Cross Information Potential that uses representative points of the dataset and statistics extracted directly from data to measure the interaction between groups. The proposed approach allows us to use all advantages of this information-theoretic descriptor and solves the limitations imposed on it by its own nature. From this, two cost functions and three algorithms have been proposed to perform cluster analysis. As the use of Information Theory captures the relationship between different patterns, regardless of assumptions about the nature of this relationship, the proposed approach was able to achieve a better performance than the main algorithms in literature. These results apply to the context of synthetic data designed to test the algorithms in specific situations and to real data extracted from problems of different fields / Atualmente, um dos maiores desafios para o campo de minera??o de dados ? realizar a an?lise de agrupamentos em dados complexos. At? o momento, diversas t?cnicas foram propostas mas, em geral, elas s? conseguem atingir bons resultados dentro de dom?nios espec?ficos, n?o permitindo, dessa maneira, que exista um consenso de qual seria a melhor forma para agrupar dados. Essas t?cnicas costumam falhar por fazer suposi??es nem sempre realistas sobre a distribui??o de probabilidade que modela os dados. Com base nisso, o trabalho proposto neste documento cria uma nova medida baseada no Potencial de Informa??o Cruzado que utiliza pontos representativos do conjunto de dados e a estat?stica extra?da diretamente deles para medir a intera??o entre grupos. A abordagem proposta permite usar todas as vantagens desse descritor de informa??o e contorna as limita??es impostas a ele pela sua pr?pria forma de funcionamento. A partir disso, duas fun??es custo de otimiza??o e tr?s algoritmos foram constru?dos para realizar a an?lise de agrupamentos. Como o uso de Teoria da Informa??o permite capturar a rela??o entre diferentes padr?es, independentemente de suposi??es sobre a natureza dessa rela??o, a abordagem proposta foi capaz de obter um desempenho superior aos principais algoritmos citados na literatura. Esses resultados valem tanto para o contexto de dados sint?ticos desenvolvidos para testar os algoritmos em situa??es espec?ficas quanto em dados extra?dos de problemas reais de diferentes naturezas

Made available in DSpace on 2014-12-17T14:55:49Z (GMT). No. of bitstreams: 1 VitorLS_DISSERT.pdf: 1833534 bytes, checksum: 72ebc7d9d8be6ba8ae53eaad106afa8d (MD5) Previous issue date: 2011-03-03 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / Following the new tendency of interdisciplinarity of modern science, a new field called neuroengineering has come to light in the last decades. After 2000, scientific journals and conferences all around the world have been created on this theme. The present work comprises three different subareas related to neuroengineering and electrical engineering: neural stimulation; theoretical and computational neuroscience; and neuronal signal processing; as well as biomedical engineering. The research can be divided in three parts: (i) A new method of neuronal photostimulation was developed based on the use of caged compounds. Using the inhibitory neurotransmitter GABA caged by a ruthenium complex it was possible to block neuronal population activity using a laser pulse. The obtained results were evaluated by Wavelet analysis and tested by non-parametric statistics. (ii) A mathematical method was created to identify neuronal assemblies. Neuronal assemblies were proposed as the basis of learning by Donald Hebb remain the most accepted theory for neuronal representation of external stimuli. Using the Marcenko-Pastur law of eigenvalue distribution it was possible to detect neuronal assemblies and to compute their activity with high temporal resolution. The application of the method in real electrophysiological data revealed that neurons from the neocortex and hippocampus can be part of the same assembly, and that neurons can participate in multiple assemblies. (iii) A new method of automatic classification of heart beats was developed, which does not rely on a data base for training and is not specialized in specific pathologies. The method is based on Wavelet decomposition and normality measures of random variables. Throughout, the results presented in the three fields of knowledge represent qualification in neural and biomedical engineering / Following the new tendency of interdisciplinarity of modern science, a new field called neuroengineering has come to light in the last decades. After 2000, scientific journals and conferences all around the world have been created on this theme. The present work comprises three different subareas related to neuroengineering and electrical engineering: neural stimulation; theoretical and computational neuroscience; and neuronal signal processing; as well as biomedical engineering. The research can be divided in three parts: (i) A new method of neuronal photostimulation was developed based on the use of caged compounds. Using the inhibitory neurotransmitter GABA caged by a ruthenium complex it was possible to block neuronal population activity using a laser pulse. The obtained results were evaluated by Wavelet analysis and tested by non-parametric statistics. (ii) A mathematical method was created to identify neuronal assemblies. Neuronal assemblies were proposed as the basis of learning by Donald Hebb remain the most accepted theory for neuronal representation of external stimuli. Using the Marcenko-Pastur law of eigenvalue distribution it was possible to detect neuronal assemblies and to compute their activity with high temporal resolution. The application of the method in real electrophysiological data revealed that neurons from the neocortex and hippocampus can be part of the same assembly, and that neurons can participate in multiple assemblies. (iii) A new method of automatic classification of heart beats was developed, which does not rely on a data base for training and is not specialized in specific pathologies. The method is based on Wavelet decomposition and normality measures of random variables. Throughout, the results presented in the three fields of knowledge represent qualification in neural and biomedical engineering