Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-10-19T14:08:07Z No. of bitstreams: 1 2015 - Josias Limeira da Silva Sobrinho.pdf: 2492159 bytes, checksum: 96c586fd3cecc7f1bb9414ae01788024 (MD5) / Made available in DSpace on 2016-10-19T14:08:07Z (GMT). No. of bitstreams: 1 2015 - Josias Limeira da Silva Sobrinho.pdf: 2492159 bytes, checksum: 96c586fd3cecc7f1bb9414ae01788024 (MD5) Previous issue date: 2015-12-16 / The dropout problem as the Brazilian education has been extended to all levels of education, including technical courses in agronomy. The reasons are varied and consequential. Even if the settings of the courses of technical education institutions may suffer considerable changes, especially in provision of Law No. 11. 741 (2008). In this meaning, there is the importance of knowing the possible barriers traveled by students invested in this course and its dropouts them. Enabling new endowments in avoiding these outputs in order to search the interaction school community and technical student, stating that each member in their functions, have their responsibilities with this student body, their job prospects and even the contribution of the environment of pedagogical actions in Resolution of the problem avoidance. Postulating on the objectification of check truancy as a major challenge put to Codai in terms of access and permanence in Agricultural Technician course students, so that, to achieve this objectification leaned in targeted theoretical knowledge the topic and arranged in books, scientific articles, and electronic search, above all, support in the annotated in laws, decrees and resolutions that address the permeate of Brazilian education. Theoretical support that was the basis for general observations from the perspective of a documentary research on dropout cases occurring between 2010 and 2014, the technical agronomy course offered by the Agricultural College Dom Augustine Ikas - Codai / UFRPE. Located in the municipality of S?o Louren?o da Mata - PE. In addition to field research involving managers, teachers and alumni (escaped) this educational institution. So that the results may contribute to the existing research on the subject involved, but also be supportive knowledge of school life and the barriers faced as the causes of evasion, to take certifications as the school context and the challenges of young people are confronted in their professional preparation and factors such as economic issue; work and help the family; lack of motivation; the unsuitability for the course; lack of reconciliation between work and progress; Course expectations do not reach the expected, among others. Above all, the recognition that evasion back losses to the students, society and the public coffers / A evas?o como problem?tica do ensino brasileiro, vem se estendendo em todos os n?veis educacionais, inclusive em cursos t?cnicos em Agropecu?ria. Os motivos s?o variados e consequentes. Mesmo que as configura??es dos cursos das institui??es de Ensino T?cnico venham sofrer transforma??es consider?veis, em disposi??o principalmente da lei n? 11. 741 (2008). Nessa significa??o, verifica-se a import?ncia de se conhecer as poss?veis barreiras percorridas pelos alunos investidos nesse curso e suas desist?ncias dos mesmos. Possibilitando novas investiduras no evitar dessas sa?das com vista ? busca ? intera??o comunidade escolar e o estudante t?cnico, afirmando que cada membro, em suas fun??es, possui suas responsabilidades com esse alunado, suas perspectivas profissionais e at? mesmo a contribui??o da conjuntura de a??es pedag?gicas na resolu??o do problema evas?o. Postulando-se na objetiva??o de verificar a evas?o escolar como um dos grandes desafios posto ao Codai, em respeito ao acesso e perman?ncia de alunos do curso de T?cnico em Agropecu?ria, de forma que, para o alcance dessa objetiva??o debru?ou-se em conhecimentos te?ricos direcionados ao tema e dispostos em livros, artigos cient?ficos, e pesquisa eletr?nica, sobretudo, com apoio nos averbados em leis, decretos e resolu??es que contemplam o perpassar da educa??o brasileira. Suporte te?rico que foi a base para considera??es gerais sob a ?tica de uma pesquisa documental sobre casos de evas?o ocorridos entre os 2010 e 2014, no curso t?cnico de agropecu?ria oferecido pelo Col?gio Agr?cola Dom Agostinho Ikas ? Codai/ UFRPE. Situado no Munic?pio de s?o Louren?o da Mata ? PE. Somado-se a uma pesquisa de campo envolvendo gestor, professores e ex-alunos (evadidos) dessa institui??o de ensino. De forma que, os resultados obtidos venham contribuir com as pesquisas j? existentes quanto ? tem?tica envolvida, mas tamb?m ser suporte de conhecimentos da viv?ncia escolar e as barreiras enfrentadas como as causas da evas?o, no sentido de levar certifica??es quanto o contexto escolar e os desafios de jovens em defrontarem-se em sua prepara??o profissional e fatores como: quest?o econ?mica; trabalhar e ajudar a fam?lia; falta de motiva??o; a n?o adequa??o ao curso; falta de concilia??o entre trabalho e curso; expectativas do curso n?o alcan?am o esperado, entre outros. Sobretudo, o reconhecimento de que a evas?o tr?s preju?zos aos pr?prios alunos, a sociedade e aos cofres p?blicos

Made available in DSpace on 2014-12-17T15:37:10Z (GMT). No. of bitstreams: 1 ArthurSCF_DISSERT.pdf: 1292069 bytes, checksum: 075e39981847ff7574f2e91e90afcba3 (MD5) Previous issue date: 2012-04-09 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Neuroscience is on a rise of discoveries. Its wide interdisciplinary approach facilitates a more complex understanding of the brain, covering various areas in depth. However, many phenomena that fascinate human kind are far from being fully elucidated, such as the formation of memories and sleep. In this study we investigated the role of the dopaminergic system in the process of memory consolidation and modulation of the phases of sleep-wake cycle. We used two groups of animals: wildtype mice and hiperdopaminergic mice, heterozygous for the gene encoding the dopamine transporter protein. We observed in wild-type mice that the partial blockade of the D2 dopamine receptor by the drug haloperidol caused deficits in memory consolidation for object recognition, as well as a significant reduction in the duration of rapid eye movement sleep (REM). We also found a mnemonic deficit without pharmacological intervention in hiperdopaminergic animals; this deficit was reversed with haloperidol. The results suggest that dopamine plays a key role in memory consolidation for object recognition. The data also support a functional relationship between the dopaminergic system and the modulation of REM sleep / As descobertas da neuroci?ncia est?o em franca ascens?o. A sua grande interdisciplinaridade facilita uma abordagem mais complexa do c?rebro, abrangendo com profundidade diversas ?reas. No entanto, muitos fen?menos que fascinam a humanidade est?o longe de ser completamente elucidados; nesse contexto se encontra a rela??o entre a consolida??o das mem?rias e o sono. Nesse trabalho investigamos o papel de parte do sistema dopamin?rgico no processo de consolida??o de mem?rias e na modula??o das fases do ciclo sono-vig?lia. Utilizamos dois grupos de animais: camundongos selvagens e camundongos hiperdopamin?rgicos, heterozigotos para o gene que codifica a prote?na transportadora de dopamina. Observamos em camundongos selvagens que o bloqueio parcial dos receptores dopamin?rgicos da fam?lia D2 pela droga haloperidol provocou d?ficits na consolida??o da mem?ria de reconhecimento de objetos, bem como uma redu??o significativa do tempo de dura??o do sono de movimento r?pido dos olhos (MRO). Observamos tamb?m um d?ficit, sem interven??o farmacol?gica, em animais hiperdopamin?rgicos; tal d?ficit foi revertido com a droga haloperidol. Os resultados indicam que a dopamina desempenha um papel importante no processo de consolida??o de mem?rias de reconhecimento de objetos. Os dados tamb?m corroboram uma rela??o funcional entre o sistema dopamin?rgico e a modula??o da fase do sono MRO

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-03-20T21:03:00Z No. of bitstreams: 1 EvelynFernandesErickson_DISSERT.pdf: 706523 bytes, checksum: 8adb88738bde33540238e2807b96f5f4 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-23T00:17:48Z (GMT) No. of bitstreams: 1 EvelynFernandesErickson_DISSERT.pdf: 706523 bytes, checksum: 8adb88738bde33540238e2807b96f5f4 (MD5) / Made available in DSpace on 2017-03-23T00:17:48Z (GMT). No. of bitstreams: 1 EvelynFernandesErickson_DISSERT.pdf: 706523 bytes, checksum: 8adb88738bde33540238e2807b96f5f4 (MD5) Previous issue date: 2016-12-12 / O pluralismo l?gico vem recentemente chamando aten??o, com v?rios autores contestando sua natureza. O pluralismo l?gico ? a posi??o que diz que h? mais de uma l?gica correta ou leg?tima, o que pode ser articulado de diferentes maneiras. A presente disserta??o participa nesse debate explorando o framework do ?-entailment no contexto de variedades do pluralismo presentes na literatura. O ?-entailment ? uma no??o de consequ?ncia l?gica que ? capaz de expressar outras rela??es, como as l?gicas multi-dimensionais. Em particular, esse estudo examina quatro posi??es sobre o pluralismo: o pluralismo ecl?tico de Shapiro, o pluralismo atrav?s de GTT de Beall e Restall, o pluralismo intra-te?rico de Hjortland e os pluralismos atrav?s de teoria das demonsta??es de Restall e Paoli. Ser? mostrado como o ?-entailment se encaixa nessas variedades de pluralismo e tamb?m como fica em falta em certos aspectos. O objetivo da disserta??o ? tanto contribuir para a discuss?o sobre o pluralismo l?gico quanto expandir a discuss?o sobre o ?-entailment e outras no??es de consequ?ncia l?gica desse g?nero. / Logical pluralism has recently been given much attention, with numerous authors contesting its nature. In a broad sense, logical pluralism is the view that there are more than one correct or legitimate logic, which can be articulated in different ways. The present study participates in this debate by exploring the framework of ?-entailment in the context of several of varieties of pluralism. ?-entailment is a logical consequence relation, which may express different consequence relations, such as those of many-dimensional logics. In particular, this study examines four different takes on pluralism: Shapiros?s eclectic pluralism, Beall and Restall?s GTT pluralism, Hjortland?s intra-theoretic pluralism and Restall and Paoli?s pluralism based on proof-theory. It will be shown how ?-entailment fits into these varieties of pluralism, and a discussion is presented on how ?-entailment falls short is some aspects. The aim is to contribute to the discussion on logical pluralism as well as to expand the discussion about ?-entailment and consequence relations of this sort.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-08-16T21:10:22Z No. of bitstreams: 1 SandersonMolickSilva_DISSERT.pdf: 786958 bytes, checksum: c978a9dfce670e09f4d33d627a246fc4 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-19T23:25:27Z (GMT) No. of bitstreams: 1 SandersonMolickSilva_DISSERT.pdf: 786958 bytes, checksum: c978a9dfce670e09f4d33d627a246fc4 (MD5) / Made available in DSpace on 2016-08-19T23:25:27Z (GMT). No. of bitstreams: 1 SandersonMolickSilva_DISSERT.pdf: 786958 bytes, checksum: c978a9dfce670e09f4d33d627a246fc4 (MD5) Previous issue date: 2015-09-04 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A Tese de Suszko ? uma posi??o filos?fica acerca da natureza dos m?ltiplos valores-de-verdade. Formulada pelo l?gico polon?s Roman Suszko, durante a d?cada de 1970, a tese defende a exist?ncia de ?apenas dois valores-de-verdade?. Tal afirma??o diz respeito ? concep??o de multi-valora??o perpetrada pelo l?gico Jan ?ukasiewicz. Considerado um dos criadores das l?gicas multi-valoradas, ?ukasiewicz acrescentou, em adi??o aos valores fregeanos tradicionais de Verdade e Falsidade, um terceiro valor: o Indeterminado. Para ele, seu terceiro valor poderia ser visto como um passo al?m da dicotomia Aristot?lica entre o ser e o n?o-ser. De acordo com Suszko, as ideias de ?ukasiewicz sobre multi-valora??o se baseavam em uma confus?o entre valores alg?bricos (aquilo que ? descrito/denotado por senten?as) e valores l?gicos (verdade e falsidade). Assim, o terceiro valor-de-verdade criado por ?ukasiewicz seria apenas um valor alg?brico, isto ?, uma poss?vel denota??o para uma senten?a, mas n?o um valor l?gico genu?no. A tese de Suszko encontra respaldo em um resultado formal conhecido hoje como Redu??o de Suszko, um teorema que afirma que toda l?gica tarskiana pode ser caracterizada por uma sem?ntica bivalente. Esta disserta??o pretende ser uma investiga??o da tese de Suszko e de suas implica??es. A primeira parte ? dedicada ?s ra?zes hist?ricas da multi-valora??o e introduz as principais motiva??es de Suszko ao formular a distin??o entre valores alg?bricos e valores l?gicos, e assim revelar o car?ter duplo dos valores-de-verdade. A segunda parte explora a Redu??o de Suszko e apresenta seus principais desenvolvimentos; as propriedades das sem?nticas bivalentes em compara??o ?s sem?nticas multi-valoradas tamb?m s?o exploradas e discutidas. Por fim, a terceira parte investiga o conceito de valores l?gicos dentro do contexto de no??es n?o-tarskianas de consequ?ncia l?gica; o significado da tese de Suszko dentro desses ambientes tamb?m ? discutido. Mais ainda, os fundamentos filos?ficos das no??es de consequ?ncias n?o-tarskianas s?o discutidos ? luz do debate recente sobre pluralismo l?gico. / Suszko?s Thesis is a philosophical claim regarding the nature of many-valuedness. It was formulated by the Polish logician Roman Suszko during the middle 70s and states the existence of ?only but two truth values?. The thesis is a reaction against the notion of many-valuedness conceived by Jan ?ukasiewicz. Reputed as one of the modern founders of many-valued logics, ?ukasiewicz considered a third undetermined value in addition to the traditional Fregean values of Truth and Falsehood. For ?ukasiewicz, his third value could be seen as a step beyond the Aristotelian dichotomy of Being and non-Being. According to Suszko, ?ukasiewicz?s ideas rested on a confusion between algebraic values (what sentences describe/denote) and logical values (truth and falsity). Thus, ?ukasiewicz?s third undetermined value is no more than an algebraic value, a possible denotation for a sentence, but not a genuine logical value. Suszko?s Thesis is endorsed by a formal result baptized as Suszko?s Reduction, a theorem that states every Tarskian logic may be characterized by a two-valued semantics. The present study is intended as a thorough investigation of Suszko?s thesis and its implications. The first part is devoted to the historical roots of many-valuedness and introduce Suszko?s main motivations in formulating the double character of truth-values by drawing the distinction in between algebraic and logical values. The second part explores Suszko?s Reduction and presents the developments achieved from it; the properties of two-valued semantics in comparison to many-valued semantics are also explored and discussed. Last but not least, the third part investigates the notion of logical values in the context of non-Tarskian notions of entailment; the meaning of Suszko?s thesis within such frameworks is also discussed. Moreover, the philosophical foundations for non-Tarskian notions of entailment are explored in the light of recent debates concerning logical pluralism.