In this thesis I show that indecomposable projective and tilting modules in hypertoric category O are obtained by applying a variant of the geometric Jacquet functor of Emerton, Nadler, and Vilonen to certain Gel'fand-Kapranov-Zelevinsky hypergeometric systems. This proves the abelian case of a conjecture of Bullimore, Gaiotto, Dimofte, and Hilburn on the behavior of generic Dirichlet boundary conditions in 3d N=4 SUSY gauge theories.

The Where's Waldo problem concerns how individuals can rapidly scan a scene to detect a target object in it. This dissertation develops the ARTSCAN Search neural model to clarify how brain mechanisms that govern spatial and object attention, spatially-invariant object learning and recognition, reinforcement learning, and eye movement search are coordinated to enable learning and directed search for desired objects at specific locations in a cluttered scene. In the model, interactions from the Where cortical processing stream to the What cortical processing stream modulate invariant category learning of a desired object, whereas interactions from the What cortical processing stream to the Where cortical processing stream support search for the object. In particular, when an invariant object category representation is activated top-down by a cognitive plan or by an active motivational source in the model's What stream, it can shift spatial attention in the Where stream and thereby selectively activate the locations of sought-after object exemplars. These combined What-to-Where and Where-to-What interactions clarify how the brain's solution of the Where's Waldo problem overcomes the complementary deficiencies of What and Where stream processes taken individually by using inter-stream interactions that allow both invariant object recognition and spatially selective attention and action to occur.

Peu d’artistes évoquent autant le sublime que Wagner, lequel, selon Nietzsche ne pouvait « respirer librement que dans le sublime et le supra-sublime ». Pourtant, le sublime wagnérien reste finalement peu analysé, sauf à travers quelques exemples précis.Nous avons donc tenté d’interroger l’ensemble des œuvres lyriques et certains écrits esthétiques de Wagner, pour les confronter à la tradition du sublime et à la philosophie qui s’en réclame. La tradition du sublime nous a donné de précieux éclairages sur la musique et l’action dramatique à partir du sublime poétique chez Longin, du sublime de l’obscur chez Burke, du sublime mathématique et du sublime dynamique de Kant, du sublime pathétique chez Schiller… Toutefois, de simples catégories ne suffisent pas à rendre compte de certains modes opératoires du sublime wagnérien. Il faut moins chercher d’autres clefs que se référer à une conception du sublime vraiment principielle et ouverte.De ce point de vue, le sublime n’est pas seulement une catégorie, une manière de parler et de classer : c’est un principe à la fois originaire, impératif et fondateur, comme l’a montré Baldine Saint Girons. Et toute la difficulté est de comprendre les articulations possibles entre un sublime pensé à partir de ses véhicules privilégiés (grandeur, laideur, obscurité, simplicité), un sublime analysé à partir de ses effets généraux (enthousiasme, étonnement, respect), et un sublime conçu comme principe, introduisant donc à la question des enjeux.Le problème tient au fait que le sublime est principe de lui-même en même temps que de l’expérience qui le découvre. Notre objet est donc de repérer les signifiants privilégiés de l’expérience du sublime, au moment où lui-même comme principe tend à se dérober.Nous essayons de montrer les seuils que franchit le sublime wagnérien et son élan vers un sublime cosmique. La « mélodie infinie » de Wagner perce néanmoins obliquement, comme, par exemple, dans le « thème du regard » de Tristan. Il ne s’agit justement plus de simples « thèmes » au sens classique, car leur « dire » - comme celui de Levinas - ne se réduit jamais en un dit « thématisable », mais poursuit son élan, telle la vrille du sublime. / Few artists evoke, as much as Wagner, the Sublime. According to Nietzsche: « more than anyone else », he could « breathe freely only in the Sublime and the supra Sublime » (The case of Wagner). However, the Wagnerian Sublime was finally few analysed, except through some precise examplesSo we tried to question the whole of lyric works and some of the aesthetic writings of Wagner, confronted with the tradition of Sublime, and the philosophies which are claim for these last. Sublime’s tradition gave us invaluable references on music and dramatic action, from poetic Sublime in Longin, Burkian Sublime of obscure, Kantian categories of « mathematic » or «dynamic » Sublime, pathetican Sublime of Schiller … However, the simple categories are not enough to give an account of the Wagnerian Sublime. We must, less seek other keys, than refer to conception of Sublime really from principle and open. From this point of view, Sublime is not only a category, a manner of speaking or classifying : it is a principle, at the same time originating, imperative and founding, as shown by Baldine Saint Girons. And all the difficulty is to understand the possible articulations of a Sublime thought from its privileged vehicles (greatness, ugliness, darkness, simplicity), a Sublime analysed from its general effects (enthousiasm, astonishment, respect), and a Sublime conceived as principle, so introducing to the question of the issues. The problem is due to the fact that the Sublime is principle of itself in the same time that of the experiment which discovers it. Our object is thus to locate the privileged meanings of Sublime’s experience, while itself as a principle tends to escape.We try to show the thresholds which crosses the Wagnerian Sublime and his impulse towards a cosmic Sublime. The « infinite melody » of Wagner is piercing nevertheless obliquely, like in, for example, the «glance theme » in Tristan. Precisely it is no more classical « themes », because their saying – like in Levinas – can’t be reduced in a thematisable said, but continue his impulse, like the spin of Sublime.

The ability to organize concepts (e.g., dog, chair) into efficient mental representations, i.e., categories (e.g., animal, furniture) is a fundamental mechanism which allows humans to perceive, organize, and adapt to their world. Much research has been dedicated to the questions of how categories emerge and how they are represented. Experimental evidence suggests that (i) concepts and categories are represented through sets of features (e.g., dogs bark, chairs are made of wood) which are structured into different types (e.g, behavior, material); (ii) categories and their featural representations are learnt jointly and incrementally; and (iii) categories are dynamic and their representations adapt to changing environments. This thesis investigates the mechanisms underlying the incremental and dynamic formation of categories and their featural representations through cognitively motivated Bayesian computational models. Models of category acquisition have been extensively studied in cognitive science and primarily tested on perceptual abstractions or artificial stimuli. In this thesis, we focus on categories acquired from natural language stimuli, using nouns as a stand-in for their reference concepts, and their linguistic contexts as a representation of the concepts’ features. The use of text corpora allows us to (i) develop large-scale unsupervised models thus simulating human learning, and (ii) model child category acquisition, leveraging the linguistic input available to children in the form of transcribed child-directed language. In the first part of this thesis we investigate the incremental process of category acquisition. We present a Bayesian model and an incremental learning algorithm which sequentially integrates newly observed data. We evaluate our model output against gold standard categories (elicited experimentally from human participants), and show that high-quality categories are learnt both from child-directed data and from large, thematically unrestricted text corpora. We find that the model performs well even under constrained memory resources, resembling human cognitive limitations. While lists of representative features for categories emerge from this model, they are neither structured nor jointly optimized with the categories. We address these shortcomings in the second part of the thesis, and present a Bayesian model which jointly learns categories and structured featural representations. We present both batch and incremental learning algorithms, and demonstrate the model’s effectiveness on both encyclopedic and child-directed data. We show that high-quality categories and features emerge in the joint learning process, and that the structured features are intuitively interpretable through human plausibility judgment evaluation. In the third part of the thesis we turn to the dynamic nature of meaning: categories and their featural representations change over time, e.g., children distinguish some types of features (such as size and shade) less clearly than adults, and word meanings adapt to our ever changing environment and its structure. We present a dynamic Bayesian model of meaning change, which infers time-specific concept representations as a set of feature types and their prevalence, and captures their development as a smooth process. We analyze the development of concept representations in their complexity over time from child-directed data, and show that our model captures established patterns of child concept learning. We also apply our model to diachronic change of word meaning, modeling how word senses change internally and in prevalence over centuries. The contributions of this thesis are threefold. Firstly, we show that a variety of experimental results on the acquisition and representation of categories can be captured with computational models within the framework of Bayesian modeling. Secondly, we show that natural language text is an appropriate source of information for modeling categorization-related phenomena suggesting that the environmental structure that drives category formation is encoded in this data. Thirdly, we show that the experimental findings hold on a larger scale. Our models are trained and tested on a larger set of concepts and categories than is common in behavioral experiments and the categories and featural representations they can learn from linguistic text are in principle unrestricted.

Este trabalho propõe o estudo dos espaços coerentes do ponto de vista da teoria dos topos, ou seja, consiste em uma análise, em termos de topos, das principais categorias de espaços coerentes. Os espaços coerentes constituem um tipo de domínio que apresenta algumas particularidades que o distinguem dos demais, por exemplo, considera admissíveis no conjunto de funções somente aquelas que, além de contínuas no sentido de Scott - preservam supremos de conjuntos dirigidos, também são estáveis e lineares. Um topos e uma categoria Cartesiana fechada com classificador de subobjetos. Isso faz com que todo topos se comporte como Set (conjuntos como objetos e funções como morfismos), ou seja, uma categoria na qual as interpretações de suas construções básicas seguem a Teoria dos Conjuntos. Entre as categorias de Espaços Coerentes, tem-se a categoria STAB, cujos objetos são os espaços coerentes e os morfismos são funções estáveis entre esses espaços, que é uma categoria cartesiana fechada. Isto significa que STAB é uma categoria especial no sentido computacional: além de possuir o produto binário para todos os seus objetos, STAB apresenta objeto exponencial e morfismo de avaliação, garantindo significado para processos computacionais. A subcategoria LIN da categoria STAB, cujos morfismos são as funções lineares, não é uma categoria cartesiana fechada. Entretanto, LIN é uma categoria monoidal simétrica que e fechada. Este, condição e suficiente para que em LIN também se tenha a garantia de se obter significado para processos computacionais. Apresenta-se então, uma interpretação computacional da estrutura destas categorias e uma análise das mesmas do ponto de vista de topos, isto é, da existência ou não de classificador de subobjetos. / This work proposes the study of coherent spaces from the point of view of the Topos Theory, that is, it consists of an analysis of the main categories of coherent spaces in terms of topos. The coherent spaces make up a kind of domain which presents some peculiarities that separate it from the rest, for example, in the complex whole of the functions it only considers permissible, those which, apart from being continuous in the sense of Scott - preserving supremo of directed sets, it is also stable and linear. A topos is a Cartesian closed with subobject classifier. This makes topos behaves like Set (sets as objects and functions as morphisms), that is, a category in which the interpretations of its basic constructions follow the Theory of Sets. Among the categories of Coherent Spaces, there is the STAB category, a closed Cartesian category, the objects of which are the coherent spaces, having morphisms as stable functions among these spaces. This means that STAB is a special category in the computational sense: apart from having a binary product for all its objects, STAB presents an exponential object and a morphism of evaluation, ensuring meaning for computational processes. The subcategory LIN of the STAB category, the morphisms of which are linear functions, is not a closed Cartesian category. However, LIN is a symmetrical monoidal category which is closed. This condition is sufficient to also have in LIN the guarantee of obtaining meaning for computational processes. Thus, a computational interpretation of the structure of these categories will be presented, as well as an analysis of them from the point of view of the Topos Theory, that is, if subobject classifier exists or not.

Submitted by Marcelo Rodella Bettanim null (marcelobettanim@hotmail.com) on 2017-02-01T23:02:17Z No. of bitstreams: 2 Dissertação Mestrado.pdf: 1589844 bytes, checksum: e77f0b869b86e9b1cd2f8e01ee7a695b (MD5) Dissertação Mestrado.pdf: 1589844 bytes, checksum: e77f0b869b86e9b1cd2f8e01ee7a695b (MD5) / Rejected by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: Foram submetidos 2 arquivos PDF’s, apenas 1 arquivo deve ser submetido. O arquivo PDF não deve estar protegido e a dissertação/tese deve estar em um único arquivo, inclusive os apêndices e anexos, se houver. Corrija estas informações e realize uma nova submissão contendo o arquivo correto. Agradecemos a compreensão. on 2017-02-06T13:01:12Z (GMT) / Submitted by Marcelo Rodella Bettanim null (marcelobettanim@hotmail.com) on 2017-02-07T00:32:44Z No. of bitstreams: 1 Dissertação Mestrado.pdf: 1589844 bytes, checksum: e77f0b869b86e9b1cd2f8e01ee7a695b (MD5) / Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-02-09T15:32:42Z (GMT) No. of bitstreams: 1 bettanim_mr_me_rcla.pdf: 1589844 bytes, checksum: e77f0b869b86e9b1cd2f8e01ee7a695b (MD5) / Made available in DSpace on 2017-02-09T15:32:42Z (GMT). No. of bitstreams: 1 bettanim_mr_me_rcla.pdf: 1589844 bytes, checksum: e77f0b869b86e9b1cd2f8e01ee7a695b (MD5) Previous issue date: 2016-12-13 / Este estudo objetivou analisar os procedimentos de trabalho de treinadores de futebol de categorias sub-15 de clubes esportivos paulistas através da identificação do processo de formação dos treinadores e análise de quais procedimentos de trabalho os treinadores utilizam para atingir os objetivos de formação esportiva e humana de seus atletas. A metodologia caracteriza-se como uma pesquisa descritiva de abordagem qualitativa, sendo utilizada como fonte de dados a revisão de literatura acerca do assunto pesquisado, leis que regulamentam o atual exercício da atividade de treinador de futebol no Brasil e a interpretação das informações advindas de um questionário semiestruturado e posterior aprofundamento das informações coletadas através de uma entrevista semiestruturada, sob a técnica de análise do conteúdo. Os resultados revelaram que o perfil dos treinadores é constituído pela prevalência da formação acadêmica de licenciado e bacharel em Educação Física de forma concomitante, sendo que as competências que fundamentam os procedimentos de trabalho são adquiridas através do conhecimento científico, socioeducativo, disciplinar e artesanal. Como procedimentos de trabalho na seleção esportiva de seus atletas destacam-se a avaliação técnica, comportamental, tática, física e indicação externa (com base no saber fazer, método de tentativa e erro). Como procedimentos de rendimento esportivo destacam-se a preparação tática, preparação técnica, preparação física, conduta disciplinar, estímulo cognitivo e abordagem psicológica, sendo que para os procedimentos de formação humana, destacam-se a socialização através do diálogo, a orientação disciplinar, a orientação educacional, a formação cidadã ética-moral e a valorização dos valores esportivos universais. O estudo concluiu que os treinadores não utilizam procedimentos de trabalho pautados em critérios objetivos e científicos aparentes em suas ações procedimentais, indicando apenas que tais ações baseiam-se pela observação subjetiva. Apesar dos treinadores compreenderem a relevância do conhecimento científico em suas ações procedimentais, as informações também indicam a importância do conhecimento prático para exercer a atividade de treinador de futebol. Sugere-se que mais estudos acerca dessa temática sejam desenvolvidos para aprofundar as práticas utilizadas pelos treinadores no sentido de revelar a construção de procedimentos de trabalho baseados em parâmetros científicos / This study aimed to analyze the working procedures soccer coaches categories sub-15 São Paulo sports clubs by identifying the training of trainers process and analysis which work procedures trainers use to achieve the sporting and human development objectives of their athletes. The methodology is characterized as a descriptive qualitative approach, being used as a data source literature review on the subject researched, laws governing the current year the football coach of activity in Brazil and the interpretation of the information coming from a semi-structured questionnaire and further development of the information collected through a semi-structured interview, in the analysis of technical content. The results showed that the profile of coaches consists of the prevalence of licensed academic background and degree in Physical Education concomitantly, and the skills that underlie the working procedures are acquired through scientific, socio-educational, disciplinary and traditional knowledge. As working procedures in sports selection of their athletes stand out the technical, behavioral, tactical, physical and external indication (based on know-how, trial and error). As a sports performance procedures include the tactical preparation, technical preparation, physical preparation, discipline, behavior, cognitive stimulation and psychological approach, and for the procedures of human, socialization stand out through dialogue, disciplinary orientation, educational, ethical-moral civic education and appreciation of universal sporting values. The study concluded that the coaches do not use working procedures guided by objective criteria and apparent scientific in its procedural actions, indicating only that such actions are based on the observation subjective. Despite the coaches understand the importance of scientific knowledge in its procedural actions, the information also indicates the importance of practical knowledge to practice football coach activity. It is suggested that more studies on this subject are developed to deepen the practices used by coaches in order to reveal the construction work procedures based on scientific parameters.

The present thesis treats one of the word-formative processes, derivation, in two Indo-European languages, Latin and Slavic. It focuses on the description and comparison of nominal (substantive) derivative suffixes and whole word-formative types that in these languages correspond to each other. The main focus of the thesis is to make a classification of these parallels from a functional point of view and to describe particular word-formative types from a scope of the onomasiologic categories. Since Latin and Slavic do not display similar parallels regarding other language levels, the considerable similarity of the derivative suffixes (and whole word-formative types) is a noticable phenomenon. One of its possible explanations is the fact that both languages have retained the original Indo-European word structure. Therefore this thesis uses as a base the Latin language as the older one which is thus formally and functionally more likely closer to the original (Indo-European) forms than Slavic, and traces particular suffixes (word-formative types) throughout their developement and attempts to reveal their formal and semantic shifts.

Submitted by Liliane Ferreira (ljuvencia30@gmail.com) on 2018-04-09T15:37:26Z No. of bitstreams: 2 Dissertação - Roberta Teodoro Santos - 2018.pdf: 855960 bytes, checksum: 3a7db21a3470a443bd63734bec150286 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-04-09T15:51:05Z (GMT) No. of bitstreams: 2 Dissertação - Roberta Teodoro Santos - 2018.pdf: 855960 bytes, checksum: 3a7db21a3470a443bd63734bec150286 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-04-09T15:51:05Z (GMT). No. of bitstreams: 2 Dissertação - Roberta Teodoro Santos - 2018.pdf: 855960 bytes, checksum: 3a7db21a3470a443bd63734bec150286 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-02-20 / Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG / The objective of this dissertation is to analyze the transition from employment to unemployment in the national labor market. Specifically, the study aims to understand what effect the quality a citizen’s current employment has on the probability of the employee losing their occupation in the future. The model is a Heckprobit, with the objective of understanding how the personal characteristics, socioeconomic, human capital and occupation characteristics can influence the probability of workers in the metropolitan areas of Recife, Belo Horizonte, Rio de Janeiro, São Paulo and Porto Alegre became unemployed. This econometric exercise is carried out by analysing the microdata of the Monthly Employment Survey (PME) from 2002 to 2016, with information from the Economically Active Population of persons aged 18 to 65 years. The results show that workers in more higher categories of employment are less likely to lose their jobs. Moreover, it is observed that the choice of occupational category tends to be more important for women than for men, that is, the effects of inadequate choices today negatively affect the probability of future employment. / Esta dissertação tem por objetivo analisar a transição do estado de emprego para o desemprego no mercado de trabalho nacional. Mais especificamente, o estudo visa compreender que efeito a qualidade do posto de trabalho atual possui sobre a probabilidade de o trabalhador perder sua ocupação no período futuro. O modelo realizado é um Heckprobit, cuja intenção é entender o quanto as características pessoais, socioeconômicas, capital humano e as características de ocupação podem influenciar na probabilidade dos trabalhadores das regiões metropolitanas de Recife, Salvador, Belo Horizonte, Rio de Janeiro, São Paulo e Porto Alegre transitarem para o desemprego. Tal exercício econométrico é realizado a partir de microdados da Pesquisa Mensal do Emprego (PME) dos anos de 2002 a 2016, com informações da População Economicamente Ativa na faixa etária de 18 a 65 anos. Os resultados apontam que trabalhadores alocados em categorias mais altas tem menor probabilidade de perder seu posto de trabalho. Além disso, é observado que a escolha da categoria da ocupação tende a ser mais importante para as mulheres do que para os homens, ou seja, os efeitos de uma escolha inadequada hoje afeta negativamente a probabilidade de emprego futura.

Apresentamos neste trabalho uma definição de complexidade na categoria derivada de complexos (limitados superiormente) de módulos sobre uma k-álgebra de dimensão finita. Um dos resultados que conseguimos foi uma relação entre a complexidade de objetos indecomponíveis e a noção de dimensão global forte. Mais especificamente, mostramos que a existência de um objeto indecomponível na categoria derivada limitada superiormente com complexidade não nula é condição suficiente para que a respectiva álgebra tenha dimensão global forte infinita. Também investigamos se existe uma relação entre as dimensões global e global forte da classe das álgebras shod (Coelho e Lanzilotta, 2009). Fomos motivados pela caracterização da classe das álgebras quase inclinadas (Happel, Reiten e Smalo, 1996) em termos da sua dimensão global forte, dada por D. Happel e D. Zacharia (2008), e pelo fato das álgebras shod serem uma generalização das álgebras quase inclinadas. Nossa conclusão foi que não existe, em geral, uma caracterização das álgebras shod em termos de sua dimensão global forte. Isto é, mostramos que para cada inteiro d > 2 existe uma álgebra shod estrita cuja dimensão global forte é igual a d. / We introduce in this thesis a definition of complexity in the derived category of bounded above complexes of modules over a finite dimensional k-algebra. One of our result shows a relationship between the complexity of indecomposable objects and the notion of strong global dimension. More specifically, we prove that the existence of an indecomposable object in the category derived bounded above whose complexity is not zero is a sufficient condition for corresponding algebra being of infinite strong global dimension. We also investigate the existence of a relationship between the global dimension and the strong global dimension of shod algebras (Coelho and Lanzilotta, 1999). Our motivation came from characterization of quasitilted algebras (Happel, Reiten and Smalo, 1996) by its strong global dimension, given by D. Happel and D. Zacharia (2008), and from the fact that shod algebras are a generalization of quasitilted algebras. Our conclusion was that there is not in general a characterization of shod algebras in terms of its strong global dimension. This conclusion comes from the fact that we showed that for each integer d > 2 there exists a strictly shod algebra whose strong global dimension is d.

O objetivo desta tese é descrever a temporalização em língua de sinais brasileira (libras), no âmbito da teoria semiótica de linha francesa. Para tanto, a proposta é analisar seis textos narrativos sinalizados por surdos ou intérpretes fluentes na língua. Os estudos sobre as línguas de sinais, como os de Liddell (2003), de Finau (2004), de Johnston & Schembri (2007), de Sinte (2013), têm apontado que as línguas sinalizadas contam com os mecanismos gerais de enunciação; que não há marcas morfológicas de flexãode tempoem seus verbos, e que há outros elementosgramaticais e discursivos envolvidos na construção das relações temporais no interior de seus textos, como gestos manuais (os itens lexicaisdicionarizadosque têm função de advérbio, como HOJE, ONTEM, AMANHÃ, etc.), e como outros gestosnão manuais,como movimentos do tronco, localização das mãos e direção do olhar do sinalizador. Esta tese vai tratar de mostrar a especificidade da organização do tempo no plano do conteúdo dos textos em libras. O estudo parte das pesquisas mencionadas e toma como base para a análise o trabalho realizado por Fiorin (2002) no português, para apresentar uma descrição dos mecanismos de instauração e organização do sistema temporal de cada um dos textos selecionados, mostrando como foram marcados o MR (momento de referência) e os diferentes momentos que compõem essas histórias. A proposta foi levantar todas as formas como a libras expressa o presente, o passado e o futuro em seus discursos, descrevendo, assim, o que Greimas & Courtés (2012) denominam como sendo a localização temporal em um texto e os efeitos de sentido da instauração do tempo. Os dados analisados foram transcritos no software ELAN (EUDICO Language Annotator), seguindo a proposta de McCleary, Viotti & Leite (2010). As análises feitas mostram que, em alguns textos do corpus, a marcação do tempo é feita por itens lexicais de tempo dicionarizados, por meio de debreagens enunciativas e enuncivas, e, em outros casos, quando não há uma marca temporal específica, a língua conta com outro mecanismo discursivo, uma embreagem heterocategórica, que permite que, por meio de uma neutralização das categorias da enunciação (pessoa, espaço, tempo), o tempo seja construído espacialmente e entendido a partir de elementos que tipicamente instauram pessoa e criam diferentes espaços nos textos. / The objective of this thesis is to describe the timing in Brazilian sign language Libras within the framework of French Semiotics. As such, the proposal is to analyze six narrative texts signaled by deaf people or fluent interpreters of the language. Studies of sign languages, such as those of Liddell (2003), Finau (2004), Johnston & Schembri (2007), and Sinte (2013), have pointed out that sign languages use the general mechanisms of enunciation, that there are no morphological markers of tense inflection of verbs in these languages, and that there are other grammatical and discursive elements involved in the construction of temporal relationships within signed texts, such as hand gestures (lexical items listed in dictionaries as adverbs, such as TODAY, YESTERDAY, TOMORROW, etc.) and other non-manual gestures, such as upper-body movements, hand positions, and the direction of the signers gaze. This thesis intends to demonstrate the specificity of the organization of time in the content of the texts in Libras. The present study takes the aforementioned studies as a starting point and uses the work of Fiorin (2002) about Portuguese Language as a basis for the analysis to present a description of the mechanisms for establishing and organizing the temporal system of each of the texts selected, showing how the MR (moment of reference) and the different moments that make up these stories were marked. The proposal was to survey all the forms by which Libras expresses the present, past and future in its discourses, thus describing what Greimas & Courtés (2012) call the temporal localization in a text and the effects of meaning in terms of establishing time. The analyzed data were transcribed in the ELAN (EUDICO Language Annotator)software following the proposal of McCleary, Viotti & Leite (2010). The analyses performed showed that in some texts of the corpus the marking of time is effected by dictionarized temporal lexical items, by means of enunciative and enuncive débrayages (shifting out), and, in other cases where there is no specific temporal marker, the language uses another discursive mechanismheterocategorical embrayage (shifting in)which uses a neutralization of enunciation categories (person, space, time) to allow time to be constructed spatially and understood based on elements that typically establish the person and create different spaces in the texts.