Esta pesquisa investiga como os sites de duas instituições museológicas ocupam o Ciberespaço. Objetiva identificar aproximações e distanciamentos entre elas, no que diz respeito à qualidade da informação comunicada e ao entendimento do espaço virtual, enquanto local em potencial para a construção do discurso simbólico sobre Artes. Preocupase igualmente em observar a efetivação do papel do Museu como agente de aproximação e integração entre a sociedade e as demandas geradas pelas novas tecnologias. O Ciberespaço institui um novo tipo de espectador/internauta que se relaciona com os bens culturais de maneira contrária à já sacralizada pelas instituições museológicas surgidas nos séculos passados. A análise dos espaços do MAC Virtual, no Brasil, e da TATE Online, na Inglaterra, mostrou que o projeto virtual terá mais sucesso à medida que evita recriar, no ambiente virtual, o espaço consagrado para a exibição da obra de arte. / This research investigates how the websites of two museological institutions occupy the Cyberspace. Its main goal is of identifying approaches and differences between them regarding the quality of published information and the understanding of the virtual space while place in potential for the development of the symbolic speech about Arts. At the same time it focuses on the consolidation of the Museums role as integration agent between society and the demands generated by new technologies. The Cyberspace creates a new kind of spectator/user that relates itself with the cultural assets in an opposite way to the traditional manner of the museological institutions that were created in the last centuries. Analyzing the website MAC Virtual in Brazil and TATE Online in England, showed that the virtual project will be more successful if it avoids recreating, in the virtual space, the traditional space for displaying the Artworks.

Aborda-se aqui a trajetória do compositor Hans-Joachim Koellreutter (1915-2005) e as relações com o debate teórico e prático da arte e estética do século XX, a partir de seus textos e obras. Uma estética que se desenvolve em íntima colaboração com a formulação de uma filosofia da história da arte que o compositor, paralelamente à sua prática composicional, expressa em artigos, palestras e cursos. A filosofia da história que vai construindo apresenta-se como a articulação entre duas temporalidades: grandes e pequenos períodos (Introdução), cujos marcos são transições, caracterizadas por crises entre sistemas que se esgotam ou que emergem para sua superação. Entre uma modernidade e uma contemporaneidade anacrônicas, a trajetória do compositor acaba nos proporcionando um modelo paradigmático dessa caracterização de crise estética apresentando alguns sintomas dessa dupla temporalidade: (i) a ressonância anacrônica dos vanguardismos do século XX aproximação arte vida comum; dessacralização dos valores da arte; quebra de protocolos ou preconceitos; subversão do meio; denúncia ou reflexão sobre os modos de produção; arte contra o consumo (Caps. I e II) , ocorrendo junto com (ii) tópicos que se tornariam marcas na contemporaneidade: arte funcional; autoria em rede colaborativa; arte voltada para a circulação; campo expandido e site específico (Cap. III). Por serem momentos de crise, transformações e hibridismo entre o velho e o novo carregam forças opostas: o primeiro resistindo e constituindo oposição através das formalizações e regulações; o segundo subjetivando-se através de novos paradigmas de forma e performance, momentos onde pode constituir-se uma vanguarda (Caps. II e III): um grupo que, em sintonia com sua época, consegue ligar as aspirações estéticas e formais com os conteúdos relevantes para interferir diretamente nessas transformações. Koellreutter compôs três peças na década de 1980 aqui escolhidas como material básico para exemplos e modelos: Ácronon, Nova-mente e Rôdô, músicas que novamente anunciavam o novo, cinquenta anos depois que aportou no Brasil, já como fenômeno de novidade (Cap. III). Tenta-se mostrar (Considerações Finais) como o compositor, ao lidar com essas duas forças a tradição e a modernidade tenta constituir uma relação que ele denomina de alfa privativaseu conceito de contrário sem contradição onde ele pode integrar tradição e a ruptura assim como o ruído e informação, estabelecendo íntima relação entre a ética e a estética. / We analyze here the trajectory of the German composer emigrated to Brazil in 1937, Hans- Joachim Koellreutter (1915-2005), and his relations with the theoretical and practical debate about art and the aesthetics of the 20th century, based on his original texts and works. An aesthetic that was developed in close collaboration with the formulation of philosophical ideas and art history which the composer, in parallel with his compositional practice, expresses in many articles, lectures and courses. The philosophy of history that he proposes presents itself as an articulation between two temporalities: large and small time intervals, whose marks are transitions, characterized by crises among systems that are exhausted or that emerge one day only to be overcome the nexto day. Inside an modernity and contemporaneity, both considered anacronic, the trajectory of the composer ends up providing us with a paradigmatic model of the characterization of an aesthetic crisis presenting some symptoms of a double temporality: (i) the anachronistic echos of the avantgardes of the twentieth century - common life as art approach; desacralization of art values; breach of protocols and prejudices; subversion of the means of productions ; denunciation or reflection on modes of production; (Caps I and II) -, occurring along with (ii) topics that would become brands in the contemporary world: functional art; collaborative authoring network; art oriented to difusion; expanded field and site specific (Chapter III). Thanks to these moments of crisis, transformations and hybridity between the old and the new carry opposing forces: the first resisting and constituting opposition through formalizations and regulations; the second subjectivizing itself through new paradigms of form and performance, moments in which a vanguard can be constituted (Caps II and III): a group that, in tune with its time, manages to connect the aesthetic and formal aspirations with the contents to interfere directly in these transformations. Koellreutter composed three especial pieces in the 1980s here chosen as the basic material for examples and models: Ácronon, Nova-mente and Rôdo, works that once again announced the new, which fifty years after he introduced in Brazil again as a phenomenon of novelty (Chapter III). Attempts to show (Final Remarks) how the composer, in dealing with these two forces - tradition and modernity. Finally we build a relationship that he calls a retritive alpha. His concept of the opposite without contradiction where he can integrate tradition and rupture as well as noise and information, establishing an intimate relationships between ethics and aesthetics.

La compréhension de la façon dont les consommateurs interagissent avec le site Web d’une entreprise s’avère primordiale pour sa survie à l’heure actuelle. En effet, elle aide les gestionnaires de sites Web à améliorer la performance du site de manière à développer la satisfaction des consommateurs et ainsi leurs comportements d’achat et de fidélité. Le but de ce travail de recherche est double. Il vise dans un premier temps à développer un modèle conceptuel expliquant la fidélité intentionnelle des consommateurs, pour dans un deuxième temps, le tester empiriquement dans le cas des sites Web de voyage. Plus précisément, cette étude examine le rôle des perceptions des consommateurs sur leur satisfaction et leur fidélité. Cette dernière est appréhendée au travers des intentions d’achat, de recommandation et de visite du site. En outre, le rôle médiateur de la satisfaction des consommateurs entre la perception des consommateurs des attributs de site et la fidélité intentionnelle est examiné. Un cadre théorique est établi qui est soutenu par des preuves empiriques dans le contexte de voyage en ligne. Ce cadre théorique se penche essentiellement sur la théorie du choix raisonné de Fishbein et Ajzen (1975), Oliver (1999) et autres travaux majeurs dans le domaine du comportement du consommateur en ligne. Notre étude s’appuie sur une approche quantitative fondée sur les données recueillies auprès des consommateurs par le biais d’un questionnaire ciblant les voyageurs en ligne. Notre analyse est fondée sur des réponses d'un échantillon de 200 voyageurs.En ce qui concerne les résultats empiriques, la recherche apporte plus d’éclairage sur le lien entre les perceptions des consommateurs et leur intention de fidélité. Par conséquent, les résultats montrent l'impact direct de la perception sur les intentions de fidélité. Plus précisément, les résultats suggèrent que la perception du consommateur liée aux attributs fonctionnels et hédoniques du site Web de voyage est susceptible d'affecter son intention de fidélité.Les résultats empiriques montrent également que les deux dimensions de la perception des consommateurs à savoir les attributs hédoniques et fonctionnels peuvent potentiellement améliorer la satisfaction du consommateur. Cependant, la satisfaction est plus déterminée par les perceptions liées aux attributs fonctionnels que celles liées aux aspects hédoniques. En outre, bien que la satisfaction du consommateur est reconnue d’influencer les intentions de fidélité des consommateurs, mais seul ne suffit pas pour conduire les intentions de fidélité des consommateurs. L'étude se termine par une conclusion générale qui résume les principaux résultats mis en évidence dans cette recherche. Il aborde les contributions théoriques, méthodologiques, les implications managériales et les contributions de résultats empiriques de recherche. Enfin, cette recherche conclut sur des voies de recherche futures. / A better comprehension of how consumers interact with travel web site is primordial for its survival as it helps managers improve web site performance to levels that satisfy online travel purchaser, and thus create loyalty intentions resulting in a positive word of mouth and repurchasing behavior. Drawing upon the foundations of marketing literature and particularly the theory of reasoned action of Fishbein and Ajzen (1975), Oliver (1999) and other relevant major works regarding online consumer behavior, this research work aims at developing and test empirically a conceptual model that explains how online leisure traveler develops loyalty intentions towards travel web site. Specifically, this research study investigates the role of consumer’s perceptions and satisfaction on loyalty intentions. In addition, the mediating role of consumer satisfaction between web site attributes perceptions-loyalty intentions relationship is examined. The established theoretical framework is supported by empirical evidence in the online travel settings. Our research study uses quantitative approach leaning on data collected by consumer-based survey targeting online travelers. Our analysis is based from responses of a sample of 200 e-travelers.With regard to the empirical findings, the research brings more knowledge about the consumer’s perceptions-loyalty intentions relationship. Hence, findings indicate the direct impact of perception on loyalty intentions. More precisely, results suggest that consumer’s perception of functional-related and hedonic related attributes of travel web site is likely to affect his loyalty intentions. The empirical findings show as well that the two dimensions of consumers’ perceptions (hedonic and functional-relevant attributes) can potentially enhance consumer satisfaction. However, satisfaction is more driven by functional-related attributes than hedonic-related ones. Furthermore, though consumer satisfaction is deemed to influence consumer loyalty intentions but alone is not sufficient to drive consumer loyalty intentions. Finally, the research study ends with a general conclusion that summarizes the key findings highlighted in this research. It addresses the theoretical, methodological, managerial marketing implications and contributions of empirical findings. Then, it provides a basis for identifying several fruitful directions for future research.

La voie de signalisation Sonic Hedgehog (Shh) joue un rôle fondamental au cours de l’embryogenèse pour la mise en place de nombreux tissus. Elle persiste à l’âge adulte et régulerait notamment le contrôle de fonctions cérébrales. Son activation requiert la liaison d’un peptide Shh sur le récepteur Patched (Ptc) qui réprime l’activité constitutive de Smoothened (Smo), un récepteur apparenté à la famille des récepteurs couplés aux protéines G (RCPG). Récemment, des essais cliniques pour le traitement de médulloblastomes et de diverses tumeurs solides chez l’Homme ont été menés avec des antagonistes de Smo. Cependant, ces molécules ont révélé des limitations à leur utilisation puisque des résistances au traitement sont apparues. Le travail de cette thèse a conduit au développement d’un modèle pharmacophorique des antagonistes de Smo qui a ensuite permis le criblage virtuel d’une banque de molécules et l’identification de nouvelles familles d’antagonistes de Smo. L’acylthiourée MRT-10 et l’acylurée MRT-14 ont été les deux premiers composés caractérisés. Des études de relations structure-activité ont permis l’identification d’une nouvelle famille d’inhibiteurs du récepteur Smo de haute affinité à laquelle l’acylguanidine MRT-83 appartient. Ce composé s’adapte parfaitement au modèle pharmacophorique des antagonistes de Smo. Les modifications structurales que MRT-83 présentes en comparaison avec les deux têtes de séries précédemment caractérisées sont à l’origine du gain d’activité de MRT-83 sur de nombreux tests cellulaires mettant en jeu l’activation de la voie Shh. Le composé MRT-83 inhibe la liaison de la BODIPY-cyclopamine sur le récepteur Smo humain et bloque la prolifération des précurseurs des cellules granulaires de rat avec une affinité de l’ordre du nanomolaire, comparable à celle des antagonistes de référence de Smo tels que le GDC-0449 et le LDE-225. Malgré l’homologie de séquence entre Smo et la famille des récepteurs Frizzled impliqués dans la signalisation Wnt, le composé MRT-83 ne présente aucun effet sur la voie Wnt. MRT-83 bloque la translocation de Smo dans le cil primaire induite par l’activation de la voie Shh dans les cellules NT2, une lignée issue d’un tératocarcinome humain, contrairement à l’antagoniste de Smo de référence, la cyclopamine qui induit l’adressage du récepteur dans le cil primaire. L’injection stéréotaxique dans le ventricule latéral de cerveau de souris adulte de MRT-83, contrairement à celle d’un composé de structure analogue, dépourvu d’activité sur Smo, inhibe l’expression des transcrits de Ptc induite par l’injection de Shh dans la zone sous-ventriculaire, l’une des deux principales aires de neurogenèse adulte. Ces résultats démontrent que les dérivés MRT bloquent également la signalisation Shh in vivo. Ainsi, les composés MRT-10, MRT-14, MRT-83 et les molécules de structure analogues caractérisées sont de puissants antagonistes de Smo. Ces molécules constituent de nouveaux outils pharmacologiques qui pourraient permettre d’améliorer notre compréhension des mécanismes moléculaires et biochimiques régulant la signalisation Hh et permettre le développement de nouvelles molécules en clinique pour le traitement des tumeurs Hh-dépendantes. / The Sonic Hedgehog (Shh) signaling pathway is implicated in multiple physiological responses including the control of brain functions. In mammals, the Shh pathway is expressed at the primary cilium and its activation requires the binding of a Shh peptide to the Patched (Ptc) receptor which represses the constitutive activity of Smoothened (Smo), a proposed member of the G-protein-coupled receptor (GPCR) family. Recently, clinical trials for treating medulloblastoma and various solid tumors in human have been conducted with Smo antagonists such as GDC-0449 or LDE-225. Such molecules may have some limitations leading to treatment resistance. In the present work, the development of a pharmacophoric model of Smo antagonists allowed a virtual screening strategy to identify novel Smo inhibitors. The acylthiourea MRT-10 and the acylurea MRT-14 were the two first leads identified. Structure-activity relationship experiments led to the discovery of new series of Smo inhibitors with high potency and to which the acylguanidine MRT-83 belongs. This inhibitor perfectly fits with the proposed pharmacophoric model for Smo antagonists. The discrete structural differences between MRT-83 and the original leads may account for the increased potency of MRT-83 observed in various in vitro Shh-based assays. MRT-83 inhibits BODIPY-cyclopamine binding to human Smo and Shh-mediated proliferation of rat granule cell proliferation with nanomolar potency similar to GDC-0449 or LDE-225. Despite significant homology of Smo with the Frizzled family of receptors which are involved in the Wnt signaling pathway, MRT-83 displays no significant effect on this pathway. MRT-83 blocks Smo translocation induced by Shh pathway activation to the primary cilia of NT2 cells that derive from a pluripotent testicular carcinoma whereas cyclopamine, a reference Smo antagonist, induces Smo accumulation of Smo signals at the primary cilium. Therefore, it might be anticipated that MRT-83, like GDC-0449 and LDE-225, interacts with Smo in a manner different from that of cyclopamine, suggesting that while their binding sites are overlapping, they are not identical. Stereotaxic injection of MRT-83 into the lateral ventricle of adult mice but not of a structurally-related compound inactive at Smo, abolished upregulation of Ptc transcription induced by Shh in the neighboring subventricular zone, one of the two main neurogenic areas of the adult brain. These data demonstrate that MRT derivatives efficiently antagonize Shh signaling in vivo. Thus, MRT-10, MRT-14, MRT-83 and structurally-related molecules are potent Smo antagonists. These compounds should be useful for clarifying the molecular and biochemical mechanisms underlying the resistance of Smo inhibitors in brain cancer cells and may help develop new therapies against Shh pathway-related brain diseases.

La transplantation d’îlots pancréatiques est une des thérapies proposées aux diabétiques de type 1. Cependant, la perte d’un nombre considérable d’îlots durant le processus est un frein à l’expansion de la thérapie (en culture : anoïkis et hypoxie ; lors de la greffe : réactions inflammatoires intenses déclenchées lors de l’infusion intra-portale). L’objectif de ce travail était de valider un biomatériau permettant d’optimiser la transplantation d’îlots. Nous avons pu démontrer l’efficacité du plasma réticulé sur la survie des îlots en culture via une diminution drastique de l’anoïkis. Nous avons également mis au point une technique de greffe intra-tissulaire à l’aide d’HPMC combinée à du plasma, permettant de reverser le diabète de manière semblable à la greffe hépatique. Ces travaux ont donc permis de valider l’importance d’un support de culture adapté, mais aussi du site receveur de la greffe et placé l’omentum comme site de choix pour ce type de greffe. / Pancreatic islet transplantation is one of the therapies proposed to type 1 diabetic patients. However, the considerable loss of islets during the process is an obstacle to the expansion of this therapy (culture: anoïkis and hypoxia; at graft time: intense inflammatory reactions triggered by intra-portal islet infusion). The objective of this work was to validate a biomaterial that can optimize islet transplantation. We were able to demonstrate the effectiveness of cross-linked plasma on the islet survival in culture through a drastic reduction of anoikis. We also design a new intra-tissular grafting technique using HPMC combined with plasma, which reversed diabetes in a manner similar to the liver. This work allowed validating the importance of an adapted culture support, but also the one of the recipient site. Also, this work placed the omentum as an excellent recipient site for this kind of transplant.

FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico / O Riacho Pajeà à um recurso hÃdrico de fundamental importÃncia histÃrica e ambiental para a cidade de Fortaleza que foi aos poucos apagado do espaÃo fÃsico e simbÃlico. Tal riacho foi objeto de monografia de graduaÃÃo desta pesquisadora como conclusÃo do curso em Arquitetura e Urbanismo (2003), a partir de um viÃs de urbanismo ecossistÃmico. ApÃs mais de dez anos desse trabalho, a presente pesquisa à uma retomada daquele corpus de estudo a partir do campo das Artes, pela compreensÃo desse lugar como um campo potente para problematizaÃÃo e atuaÃÃo simbÃlica. Diante do apagamento do riacho e das possibilidades de ampliaÃÃo do espaÃo atuais, colocam-se as questÃes: como apropriar-se das possibilidades de ampliaÃÃo da realidade criadas pelas mÃdias locativas para discutir o apagamento no contexto especÃfico do riacho Pajeà (ou como, pela adiÃÃo de camadas, falar da subtraÃÃo do espaÃo)? Como somar as virtualidades desses dispositivos Ãs virtualidades do espaÃo para construir um Parque ampliado do PajeÃ? Esta dissertaÃÃo tem como objetivo geral investigar as possibilidades de apropriaÃÃo pela arte das chamadas prÃticas Locative media para gerar um espaÃo desviante no contexto especÃfico do riacho Pajeà como espaÃo ampliado, tendo o site-specific como mÃtodo. / The Pajeà creek is a watercourse of fundamental historical and environmental rele-vance in Fortaleza, Brazil, which has been gradually erased from the cityâs physical and symbolic space. The creek was the subject of investigation of this researcherâs degree in Architecture and Urbanism (2003), from the standpoint of ecosystemic ur-banism. More than ten years later, this research is a return to the previous corpus of study, but now with a renewed perspective from the field of the Arts, in the under-standing of the creek as a field of potential for both problematization and symbolic action. In face of the creekâs erasure and its current possibilities of spatial expan-sion, questions emerge: how to take hold of the possibilities of augmented reality, enabled by locative media, in order to discuss the process of erasure in the specific context of the Pajeà creek (or how to talk about space subtraction by adding layers)? How to add the virtualities of devices to the virtualities of space to create an aug-mented park for the Pajeà creek? Using the site-specific method, this Masterâs thesis aims to investigate the possibilities of artistic appropriation of the so-called practices of locative media, in order to generate a deviant space in the specific context of the Pajeà creek as an augmented space.

A identificaÃÃo de uma estratÃgia de aprendizagem ativa, caracteriza os processos de participaÃÃo do aluno nas atividades do grupo, especialmente na integraÃÃo no grupo e no seu envolvimento na realizaÃÃo das tarefas. Para promover um ambiente propÃcio à aprendizagem colaborativa, temos que, inicialmente e no mÃnimo, fornecer um meio de comunicaÃÃo que possibilite a interaÃÃo, como os muitos espaÃos e ambientes apresentados a seguir. Partindo desse pressuposto, foi analisado que quando utilizadas em favor da educaÃÃo, as Tecnologias da InformaÃÃo e ComunicaÃÃo (TIC) utilizam o computador e a internet como ferramentas pedagÃgicas, que sendo um meio auxiliar, intervÃm favoravelmente no processo de aprendizagem, permitindo ao aluno construir e reconstruir o seu conhecimento. Para a realizaÃÃo deste trabalho, buscou-se verificar indÃcios de aprendizagem colaborativa em alunos de uma escola do Ensino MÃdio Profissionalizante, enquanto construÃam um site educativo, utilizando como principal ferramenta, o trabalho em grupos. Foi avaliado ainda o nÃvel de envolvimento dos participantes durante o processo de elaboraÃÃo do aparato. Como metodologia de pesquisa optou-se pelo estudo de caso do tipo Ãnico, atravÃs do qual mediante uma pesquisa profunda em um objeto delimitado, à possÃvel adentrar em uma realidade que nÃo conseguida plenamente por um levantamento amostral e avaliaÃÃo exclusivamente quantitativa. Como tÃcnica de pesquisa, escolheu-se a observaÃÃo participante visto que observar ajuda muito o pesquisador. Sua grande vantagem està relacionada com o fato de o pesquisador obter a informaÃÃo na ocorrÃncia espontÃnea do fato. Em nosso acompanhamento, foi possÃvel constatar que o trabalho em grupos, permitiu que se estabelecesse um clima de aprendizagem colaborativa visto que estes processos integram uma proposta educacional na qual os alunos sÃo estimulados a trabalhar em conjunto no desenvolvimento e construÃÃo do conhecimento. Durante a construÃÃo do site, os alunos foram solicitados a escrever relatÃrios periÃdicos a respeito de suas dificuldades e dos meios utilizados para resolver os problemas que ocorreram ao longo do processo, onde nos foi permitido notar a importÃncia da equipe como fonte de socializaÃÃo de saberes, de discussÃes construtivas e de respeito mÃtuo. Ao concluir a pesquisa, acredita-se ter confirmado ao longo dos resultados, os objetivos que tÃnhamos em mente: a verificaÃÃo de indÃcios de aprendizagem colaborativa, fortemente marcados ao longo do processo, bem como um grande envolvimento dos educandos participantes desta anÃlise, que puderam ser observados durante os muitos momentos de reuniÃes para a elaboraÃÃo da ferramenta. / The identification of a strategy of active learning, characterizes the processes of participation of the pupil in the activities of the group, especially in the integration in the group and its involvement in the accomplishment of the tasks. To promote a propitious environment to the collaborative learning, we have that, initially and at least, to supply a media that makes possible the interaction, as the many presented spaces and environments to follow. Leaving of this estimated, was analyzed that when used for the education, the Technologies of the Information and Communication (TIC) use the computer and the Internet as pedagogical tools, that being a means intervene favorably in the learning process, allowing to the pupil to construct and to reconstruct their knowledge. For the accomplishment of this work, we searched to verify indications of collaborative learning in pupils of a school of Professionalizing Average Education, while they were building an educative site, using as main tool, the work in groups. The level of involvement of the participants during the process of elaboration of the apparatus was still evaluated. As research methodology it was opted to the study of case of the only type, through which by means of a deep research in a delimited object, it is possible to enter in a reality that not obtained fully for a sampling survey and exclusively quantitative evaluation. As research technique, it was chosen participant comment since to observe very aid the researcher. Their great advantage is related with the fact of the researcher to get the information in the spontaneous occurrence of the fact. In our accompaniment, it was possible to evidence that the work in groups, allowed that we established a climate of collaborative learning since these processes integrate a proposal educational in which the pupils are stimulated to work jointly in the development and construction of the knowledge. During the construction of the site, the pupils had been requested to write periodic reports regarding their difficulties and of the used means to decide the problems that had occurred throughout the process, where us were allowed to notice the importance of the team as source of socialization to know, of constructive quarrels and mutual respect. When concluding the research, we believe to have confirmed throughout the results, the objectives that we had in mind: the verification of the knowledge indications of collaborative learning, strongly marked throughout the process, as well as a great involvement of the participant students of this analysis, that could have been observed during many moments of meetings for the elaboration of the tool.

O núcleo desta tese é o conjunto da minha produção artística entre os anos de 2004 e 2008, período em que se deu este doutorado. O texto que acompanha as imagens dos trabalhos descreve cronologicamente cada experiência, desde sua elaboração até a execução, como um evento concatenado a experiências anteriores e posteriores, desdobradas no tempo. Esses trabalhos não apenas partem de indagações a respeito do lugar em que estão inseridos, o que poderia identificá-los com a prática do site-specific, mas têm uma vontade de confundir-se com o próprio lugar, têm a intenção de sê-lo. Nesse sentido, talvez o ânimo da obra aqui relatada não venha de um intrincamento com um lugar específico, mas de intrincamento específico com qualquer lugar. A questão oscila entre dois lados no conjunto do trabalho, e mantém-se em suspenso um julgamento conclusivo sobre a dualidade que nomeia esta tese, que a rigor parece não existir: visto de dentro, visto de fora. / The core of this thesis is the ensemble of my artistic production between the years 2004 and 2008, which was the period when I was undertaking my PhD course. The text accompanying the images chronologically describes each experience, from its inception to its execution, as an event connected to previous and subsequent experiences, unfolded in time. These point of departure of these works go beyond issues apropos of the place in which they are inserted and that might have identified them with the practice of site-specific. The works aim at integrating themselves with each place, they aim at being that very place. In this sense, the moving force behind the works here presented may stem not so much from a relationship of entanglement with a specific place, but with a specific relation of entanglement with any place. Within the ensemble of the work, this issue oscillates between two sides and keeps a conclusive judgement about the duality that names this thesis in suspension. Rigorously speaking, this duality may even seem not to exist: viewed from the inside, viewed from the outside.

A presente pesquisa tem como objetivo estabelecer uma reflexão a respeito de parte de minha produção poética intitulada À Curta Distância. A fim de discernir critérios para tal análise parti de uma contextualização desta produção em relação às vivências artísticas que marcaram o início deste projeto, para, a seguir, estabelecer uma articulação com obras de outros artistas – tanto de antecedentes históricos como praticantes contemporâneos. O fio condutor desta investigação será dividido em dois vetores; o primeiro consiste na busca por situar o surgimento de propostas que abordam o contexto de apresentação como conteúdo da obra. A partir de uma breve descrição das conexões históricas deste tema será possível discernir como este é articulado em minha produção artística. O segundo vetor desta pesquisa é referente ao estudo da relação entre a fotografia e as artes visuais, extraindo daí argumentos para proceder uma análise do uso contemporâneo deste meio, hoje em dia tão difundido nas exposições ao redor do planeta. A relação entre o espaço físico de exposição e a fotografia se faz presente em meu trabalho por meio da criação de um paralelismo entre realidade e representação. A fotografia apresentada ao público representa o próprio ambiente em que o espectador se encontra quando está diante da imagem. Assim, com a criação deste artifício, estimula-se a passagem de uma atenção dirigida somente às propriedades formais do objeto artístico para uma apreensão fenomenológica do espaço ao qual a imagem se refere. / The present research has as objective to establish a reflection regarding part of my poetical production titled In a Short Distance. In order to discern criteria for such analysis I started off a contextualization of this production in relation to the artistic experiences that had marked the beginning of this project, then, in the sequence, establishing relation with works of other artists - as much of historical antecedents as contemporaries practitioners. The conducting wire of this inquiry will be divided in two vectors; the first one consists of the search for pointing out the sprouting of proposals that approach the presentation context as content of the work of art. From one soon description of the historical connections of this subject will be possible to discern how it is articulated in my artistic production. The second vector of this research is referring to the study of the relation between photograph and the visual arts, extracting from there arguments to proceed an analysis about the contemporary use of this medium, nowadays so spread out in the exhibitions around the world. The relation between the photograph and the physical space of exhibition is present in my work by means of the creation of a parallelism between reality and representation. The photograph presented to the public represents the proper environment where the spectator is when he sees the image. Thus, with the creation of this artifice, is possible to turn an attention only directed to the formal properties of the artistic object into a phenomenological apprehension of the real space.

Aborda-se aqui a trajetória do compositor Hans-Joachim Koellreutter (1915-2005) e as relações com o debate teórico e prático da arte e estética do século XX, a partir de seus textos e obras. Uma estética que se desenvolve em íntima colaboração com a formulação de uma filosofia da história da arte que o compositor, paralelamente à sua prática composicional, expressa em artigos, palestras e cursos. A filosofia da história que vai construindo apresenta-se como a articulação entre duas temporalidades: grandes e pequenos períodos (Introdução), cujos marcos são transições, caracterizadas por crises entre sistemas que se esgotam ou que emergem para sua superação. Entre uma modernidade e uma contemporaneidade anacrônicas, a trajetória do compositor acaba nos proporcionando um modelo paradigmático dessa caracterização de crise estética apresentando alguns sintomas dessa dupla temporalidade: (i) a ressonância anacrônica dos vanguardismos do século XX aproximação arte vida comum; dessacralização dos valores da arte; quebra de protocolos ou preconceitos; subversão do meio; denúncia ou reflexão sobre os modos de produção; arte contra o consumo (Caps. I e II) , ocorrendo junto com (ii) tópicos que se tornariam marcas na contemporaneidade: arte funcional; autoria em rede colaborativa; arte voltada para a circulação; campo expandido e site específico (Cap. III). Por serem momentos de crise, transformações e hibridismo entre o velho e o novo carregam forças opostas: o primeiro resistindo e constituindo oposição através das formalizações e regulações; o segundo subjetivando-se através de novos paradigmas de forma e performance, momentos onde pode constituir-se uma vanguarda (Caps. II e III): um grupo que, em sintonia com sua época, consegue ligar as aspirações estéticas e formais com os conteúdos relevantes para interferir diretamente nessas transformações. Koellreutter compôs três peças na década de 1980 aqui escolhidas como material básico para exemplos e modelos: Ácronon, Nova-mente e Rôdô, músicas que novamente anunciavam o novo, cinquenta anos depois que aportou no Brasil, já como fenômeno de novidade (Cap. III). Tenta-se mostrar (Considerações Finais) como o compositor, ao lidar com essas duas forças a tradição e a modernidade tenta constituir uma relação que ele denomina de alfa privativaseu conceito de contrário sem contradição onde ele pode integrar tradição e a ruptura assim como o ruído e informação, estabelecendo íntima relação entre a ética e a estética. / We analyze here the trajectory of the German composer emigrated to Brazil in 1937, Hans- Joachim Koellreutter (1915-2005), and his relations with the theoretical and practical debate about art and the aesthetics of the 20th century, based on his original texts and works. An aesthetic that was developed in close collaboration with the formulation of philosophical ideas and art history which the composer, in parallel with his compositional practice, expresses in many articles, lectures and courses. The philosophy of history that he proposes presents itself as an articulation between two temporalities: large and small time intervals, whose marks are transitions, characterized by crises among systems that are exhausted or that emerge one day only to be overcome the nexto day. Inside an modernity and contemporaneity, both considered anacronic, the trajectory of the composer ends up providing us with a paradigmatic model of the characterization of an aesthetic crisis presenting some symptoms of a double temporality: (i) the anachronistic echos of the avantgardes of the twentieth century - common life as art approach; desacralization of art values; breach of protocols and prejudices; subversion of the means of productions ; denunciation or reflection on modes of production; (Caps I and II) -, occurring along with (ii) topics that would become brands in the contemporary world: functional art; collaborative authoring network; art oriented to difusion; expanded field and site specific (Chapter III). Thanks to these moments of crisis, transformations and hybridity between the old and the new carry opposing forces: the first resisting and constituting opposition through formalizations and regulations; the second subjectivizing itself through new paradigms of form and performance, moments in which a vanguard can be constituted (Caps II and III): a group that, in tune with its time, manages to connect the aesthetic and formal aspirations with the contents to interfere directly in these transformations. Koellreutter composed three especial pieces in the 1980s here chosen as the basic material for examples and models: Ácronon, Nova-mente and Rôdo, works that once again announced the new, which fifty years after he introduced in Brazil again as a phenomenon of novelty (Chapter III). Attempts to show (Final Remarks) how the composer, in dealing with these two forces - tradition and modernity. Finally we build a relationship that he calls a retritive alpha. His concept of the opposite without contradiction where he can integrate tradition and rupture as well as noise and information, establishing an intimate relationships between ethics and aesthetics.