Orientador: Ivanir Cozeniosque Silva / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes / Made available in DSpace on 2018-08-26T18:49:46Z (GMT). No. of bitstreams: 1 Barros_Denisede_D.pdf: 23397025 bytes, checksum: 74b1625ff7ed33c15a4a801a216cc47d (MD5) Previous issue date: 2015 / Resumo: O presente estudo propõe a análise e a fundamentação da linguagem poética percebida nos registros fotográficos quanto à interação entre os fenômenos da luz, do tempo e do espaço. Essa busca esteve presente e evoluiu em sua riqueza de expressão na trajetória dos trabalhos fotográficos realizados entre 2009 e 2014. Inicialmente, essas experiências se fizeram pela interação entre fios de cabelo, a luz ambiente e seu espaço; Depois, bambuzais com suas variações de luz natural. A procura culminou com a aplicação de valores técnicos, estéticos e poéticos ¿ conquistados nos primeiros trabalhos ¿ na investigação da antena de teletransmissão da TV Cultura, localizada na cidade de São Paulo. A fotografia e o vídeo serviram de suporte no registro do objeto e suas manifestações diretas no tempo e no espaço. A interpretação desse material privilegiou as relações compositivas das fotografias, fundamentadas em aproximações com alguns artistas da vanguarda do construtivismo russo (1917-1930) e o concretismo brasileiro representado por Geraldo de Barros no período entre 1940-1950, quando trabalhou suas "fotoformas". Os acasos provenientes das imagens obtidas no decorrer deste estudo até a Antena da TV Cultura surpreendem pelas afinidades inatas aos ângulos de visão, à técnica e aos temas fotográficos comuns do processo de amadurecimento de artistas na década de 1920 / Abstract: This study proposes the analysis and the deepening of poetic language perceived in photographic records on the interaction between the phenomena of light, time and space. This search was present and evolved into its wealth of expression in the trajectory of photographic works made between 2009 and 2014. Initially, these experiences occurred by the interaction between hairs, ambient light and space. Then, bamboo groves with their variations of natural light image effects. The search followed its path with the application of technical, aesthetic and poetic values - studied in the initial works ¿ to the research of the TV Cultura remote transmission antenna, located in São Paulo. Photography and video provided the technology bases to observe and record the object and its direct manifestations in time and space. The interpretation of this material prioritized the composing relations between the images captured in photographs, based on the conceptual approaches of the Russian constructivism¿s avant-garde artists (1917-1930) and Brazilian concretism represented by Geraldo de Barros (1940-1950), when he worked his "photoforms". The results obtained from the images captured during this study to the TV Culture¿s antenna surprise due to the affinities in viewing angles, technique and thematic photographic, subjects of these artists maturation process in the 1920s / Doutorado / Artes Visuais / Doutora em Artes

Submitted by Filipe dos Santos (fsantos@pucsp.br) on 2018-11-12T10:56:13Z No. of bitstreams: 1 Polyana Alves Almeida da Silva.pdf: 1405668 bytes, checksum: c59b9f3a01edd2009a35e096093d6329 (MD5) / Made available in DSpace on 2018-11-12T10:56:13Z (GMT). No. of bitstreams: 1 Polyana Alves Almeida da Silva.pdf: 1405668 bytes, checksum: c59b9f3a01edd2009a35e096093d6329 (MD5) Previous issue date: 2018-09-21 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / This research proposes to unveil the female protagonism in the world of work from the information gathered in the press about its performance in the strikes of 1917. We have examined four journals such as A Plebe, O Debate, O Graphico and the Gazeta de Notícias to analyze the presence of workers in the striking movements, in the working-class alloys of neighborhoods, as well as their protagonism outside the factory space, that is, in the daily routine of domestic and family organization. For reflection on this aspect of the dissertation we take the concept of "Work" by K. Marx, understood as a process between nature and human being, therefore, an activity inherent to creativity and human action, which allowed the opposition to the perspectives which recognize only paid activities as work. The actions of these women are analyzed in the strikes of 1917 in São Paulo and in Rio de Janeiro, the leadership and actions of the bag seamstresses, who staged a "own" strike against the fraudsters of the patronage and at a fair price for your job. In addition, we investigated the factors that contributed to subsume the presence of the workers in such movements. We also see how the language used by the journals made it difficult to locate these women in these resistances at that historical moment and how, by their visibility, they were gradually referred to by terminations in the feminine (workers). This reflection enabled us to recover the contributions of these women to the achievements of the strikes, as well as to the formation of the working class / Esta pesquisa propõe desvelar o protagonismo feminino no mundo do trabalho a partir das informações colhidas na imprensa sobre sua atuação nas greves de 1917. Foram examinados quatro periódicos, tais como A Plebe, O Debate, O Graphico e o Gazeta de Notícias para analisar a presença das operárias tanto nos movimentos grevistas, nas ligas operárias de bairros, como também o seu protagonismo fora do espaço fabril, isto é, no cotidiano da organização doméstica e familiar. Para reflexão sobre esse aspecto da dissertação tomou-se o conceito de “Trabalho” de K. Marx, entendido como um processo entre a natureza e o ser humano, portanto, uma atividade inerente à criatividade e à ação humana, o que permitiu a contraposição às perspectivas que reconhecem como trabalho apenas atividades remuneradas. Analisaram-se as ações dessas mulheres nas greves de 1917 ocorridas em São Paulo e no Rio de janeiro, a liderança e atuações das costureiras de saco, as quais protagonizaram uma greve “própria” contra as falcatruas do patronato e por um preço justo para o seu trabalho. Ademais, investigaram-se os fatores que contribuíram para subsumir a presença das operárias em tais movimentos. Descortinou-se também como a linguagem utilizada pelos periódicos dificultou a localização dessas mulheres nessas resistências naquele momento histórico e como, por sua visibilidade, passaram a ser, gradativamente, referidas por terminações no feminino (operárias). Tal reflexão permitiu recuperar as contribuições daquelas mulheres para as conquistas que advieram das greves, como também para a formação da classe operária

A partir da metodologia de Ahnert (1987) e De Ploey et al. (1991), adaptada para a análise espacial dos processos de movimento de massa conforme Colângelo & Cruz (1997 e 2000), Crozier & Glade (1997) e Colângelo (2005 e 2007), este trabalho apresenta um modelo de magnitude e frequência espacial dos eventos de movimento de massa nas bacias dos rios Santo Antônio, Guaxinduba e córrego Canivetal. Foram recuperadas informações cartográficas do trabalho de Cruz (1974), que a partir de fotos aéreas e trabalhos de campo, mapeou os deslizamentos de 1967, seus respectivos colúvios, além dos entulhamentos ocasionados pelas corridas de detritos. Também foram utilizadas fotos aéreas e imagens de satélite existentes. Com base nestes dados espaciais, além de dados climáticos, meteorológicos, geotécnicos e morfológicos, buscou-se chegar ao modelo de magnitude e frequência espacial. Para operacionalizar o estudo foram utilizadas ferramentas de SIG, na vetorização, compilação, modelagem de dados e realização de cálculos espaciais. / This work presents a model of spatial magnitude and frequency of the events of mass movement at the basin of Santo Antônio river, Guaxinduba river and Canivetal stream based on the methodology of Ahnert (1987) and De Ploey et al. (1991), which was adapted to the spacial analysis of the mass movement processes according to Colângelo & Cruz (1997 and 2000), Crozier & Glade (1997) and Colângelo (2005 and 2007). Cartography information was taken from the work of Cruz (1974), who, using aerial photos and fieldwork, mapped the landslides in 1967, their respective colluvium, and also the rubble caused by the debris flow. Extant aereal photos and satellite were also used. Based on these spatial data, and also on climatic, meteorological, geothecnical and morphologic data, the aim was to find out the model of spatial magnitud and frequency. For operationalizing the study, GIS tools were applied in the vetorization, compilation and modelling of data, and also spatial calculation.

Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2018-05-28T14:39:49Z No. of bitstreams: 1 Bruno Antunes Andre_.pdf: 275980 bytes, checksum: 7f0fad71ad92f71926ea6f7243511678 (MD5) / Made available in DSpace on 2018-05-28T14:39:49Z (GMT). No. of bitstreams: 1 Bruno Antunes Andre_.pdf: 275980 bytes, checksum: 7f0fad71ad92f71926ea6f7243511678 (MD5) Previous issue date: 2018 / Este artigo tem por objetivo compartilhar conceitos, pensamentos e práticas de uma educação musical brincante e multiartística, através de eesquisa bibliográfica, participação em eventos, cursos, oficinas e vivências com crianças entre três e seis anos de idade, em um colégio de Porto Alegre/RS. Inicia-se abordando algumas leis que defendem os direitos das crianças e que orientam a atuação do profissional da educação, no Brasil. Abre-se diálogo sob a lupa do que é um direito natural da criança: a brincadeira. Apresenta-se, portanto, caminhos que se encontram nesta abordagem, tais como a relação da música com as brincadeiras culturais, as paisagens sonoras, a corporeidade, a teatralidade, a dança, a percussão corporal, o uso da palavra, os objetos cotidianos e a confecção de instrumentos musicais. Pesquisas de educadores como Hortélio (2016), Brito (2003), Lino (2012), Schafer (2001; 2011), Mateiro e Ilari (2012) e Marques (2016), embasam o texto. / This article aims to share concepts, thoughts and practices of creative and multi - artistic music education, through bibliographic research, participation in events, courses, workshops and experiences with children between three and six years old, in a college in Porto Alegre/RS. It begins by some laws that defend the rights of children and that guide the work of the education professional in Brazil. Dialogue opens under the magnifying glass of what is a natural right of the child: play. There are, therefore, paths to be found in this approach, such as the relation of music to cultural play, sound landscapes, corporality, theatricality, dance, body percussion, use of the word, everyday objects and the making of musical instruments Researchers such as Hortélio (2016), Brito (2003), Lino (2012), Schafer (2001; 2011), Mateiro and Ilari (2012) and Marques (2016) support the text.

No description available.

Molts sistemes físics tenen la propietat que la seva dinàmica ve definida per algun tipus de difussió espaial en competició amb un fenòmen de reacció, com per exemple en el cas de dos components químics que reaccionen al mateix temps que es difon l'un en el si de l'altre. La presència d'aquests dos fenòmens, la difusió i la reacció, sovint dóna lloc a patrons no homogenis de gran riquesa. Els models matemàtics que descriuen aquest tipus de comportament són normalment equacions en derivades parcials les solucions de les quals representen aquests patrons. En aquesta tesi s'analitza l'equació de Ginzburg-Landau complexa general, que és una equació en derivades parcials de reacció-difusió que s'utilitza sovint com a model matemàtic per a descriure sistemes oscil·latoris en dominis extensos. En particular estudiem els patrons que sorgeixen en el pla quan s'imposa que el grau de Brouwer de la solució no sigui nul. Aquests patrons estan formats per ones de rotació en forma d'espirals, és a dir, les corbes de nivell de la solució formen espirals que emanen dels punts on la funció s'anul·la. Quan la solució s'anul·la només en un punt i per tant només hi ha una espiral, tota la dependència temporal apareix en el terme de freqüència. Així doncs, la funció solució es pot expressar com a funció del radi polar i en termes del seu grau topològic i la freqüència de l'ona. Per tant, aquestes solucions es poden expressar en termes d'un sistema d'equacions diferencials ordinàries. Aquestes solucions només existeixen per una certa freqüència que depèn unívocament dels paràmetres de l'equació i, com a conseqüència i degut a la relació de dispersió entre el nombre d'ones i la freqüència, el nombre d'ones a l'infinit, l'anomenat nombre d'ones asimptòtic, ve també determinat unívocament pels paràmetres. Quan les solucions tenen més d'un zero aïllat la condició sobre el grau de la funció fa que de cada zero sorgeixi una espiral diferent i aquestes es mouen en el pla mantenint la seva estructura local. En aquest treball s'usen tècniques d'anàlisi asimptòtica per trobar equacions del moviment per als centres de les espirals i es troba que aquesta evolució temporal és lenta. En concret, per la distàncies relatives grans entre els centres de les espirals, l'escala de temps per a la seva dinàmica ve donada pel logaritme de l'invers d'aquesta distància. Es demostra que aquestes equacions del moviment són diferents en funció de la relació entre els paràmetres de l'equació de Ginzburg-Landau complexa i la separació entre els centres de les espirals, i que la forma com es passa d'unes equacions a les altres és molt singular. També es demostra que el nombre d'ones asimptòtic per al cas de sistemes amb diverses espirals també està unívocament determinat pels paràmetres però no obstant, el cas de sistemes amb diverses espirals es diferencia del cas d'una única ona en què deixa de ser constant i evoluciona al mateix ritme que la velocitat dels centres de les espirals. / Many physical systems have the property that its dynamics is driven by some kind of spatical diffusion that is in competition with a reaction, like for instance two chemical species that react at the same time that there is a diffusion of each of them into the other. This interplay between reaction and diffusion produce non-homogeneous patterns that can sometimes be very rich. The mathematical models that describe this kind of behaviours are usually nonlinear partial differential equations whose solutions represent these patterns. In this thesis we focus on an especific reaction-diffusion equation that is the so-called general complex Ginzburg-Landau equation that is used as a model for oscillatory systems in extended domains. In particular we are interested in the type of patterns in the plane that arise when the solutions have a non-vanishing Brouwer degree. These patterns have the property that they exhibit rotating waves in the shape of spirals, which means that the contour lines arrange in the shape of spirals that emerge from the points where the solution vanishes. When the solution vanishes only at one point all the time dependence appears as a frequency term so the solutions can be expressed as a function of the polar radius and in terms of the topological degree of the solution and the frequency of the wave. Therefore, these solutions can be expressed in terms of a system of ordinary differential equations. These solutions do only exist with a given frequency, and as a consequence and due to the existence of a dispresion relation, the wavenumber far from the origin, the so-called asymptotic wavenumber, is also unique. When the solutions have more than one isolated zero, the condition on the degree of the function has the effect of producing several spirals that emerge from the different zeros of the solution. These spirals evolve in time keeping their structure but moving around on the plane. In this work we use asymptotic analysis techniques to derive laws of motion for the centres of the spirals and we show that the time evolution of these patterns is slow and, for large relative separations of the centres of the spirals, the time scale for the their dynamics is logarithmic in the inverse of this distance. These laws of motion are different depending on the relation between the parameters of the complex Ginzburg-Landau equation and the relative separation of the spirals. We show that the way these laws change as the spirals separate or approach is highly singular. We also show that the asymptotic wavenumber in the case of multiple spirals is as well unique and that it evolves in time at the same rate as the velocity of the centres.

Aquesta tesi versa sobre l'estimació del moviment d'un robot mòbil a partir dels canvis en les imatges captades per una càmera muntada sobre el robot. El moviment es dedueix amb un algorisme prèviament proposat en el marc de la navegació qualitativa. Per tal d'emprar aquest algorisme en casos reals s'ha fet un estudi de la seva precisió. Per augmentar-ne l'aplicabilitat, s'ha adaptat l'algorisme al cas d'una càmera amb moviments d'orientació i de zoom.Quan els efectes perspectius no són importants, dues vistes d'una escena captades pel robot es poden relacionar amb una transformació afí (o afinitat), que normalment es calcula a partir de correspondències de punts. En aquesta tesi es vol seguir un enfoc alternatiu, i alhora complementari, fent servir la silueta d'un objecte modelada mitjançant un contorn actiu. El marc es el següent: a mesura que el robot es va movent, la projecció de l'objecte a la imatge va canviant i el contorn actiu es deforma convenientment per adaptar-s'hi; de les deformacions d'aquest contorn, expressades en espai de forma, se'n pot extreure el moviment del robot fins a un factor d'escala. Els contorns actius es caracteritzen per la rapidesa en la seva extracció i la seva robustesa a oclusions parcials. A més, un contorn és fàcil de trobar fins i tot en escenes poc texturades, on sovint és difícil trobar punts característics i la seva correspondència.La primera part d'aquest treball té l'objectiu de caracteritzar la precisió i la incertesa en l'estimació del moviment. Per avaluar la precisió, primer es duen a terme un parell d'experiències pràctiques, que mostren la potencialitat de l'algorisme en entorns reals i amb diferents robots. Estudiant la geometria epipolar que relaciona dues vistes d'un objecte planar es demostra que la direcció epipolar afí es pot recuperar en el cas que el moviment de la càmera estigui lliure de ciclorotació. Amb una bateria d'experiments, tant en simulació com reals, es fa servir la direcció epipolar per caracteritzar la precisió global de l'afinitat en diferents situacions, com ara, davant de diferents formes dels contorns, condicions de visualització extremes i soroll al sistema.Pel que fa a la incertesa, gràcies a que la implementació es basa en el filtre de Kalman, per a cada estimació del moviment també es té una estimació de la incertesa associada, però expressada en espai de forma. Per tal propagar la incertesa de l'espai de forma a l'espai de moviment 3D s'han seguit dos camins diferents: un analític i l'altre estadístic. Aquest estudi ha permès determinar quins graus de llibertat es recuperen amb més precisió, i quines correlacions existeixen entre les diferents components. Finalment, s'ha desenvolupat un algorisme que permet propagar la incertesa del moviment en temps de vídeo. Una de les limitacions més importants d'aquesta metodologia és que cal que la projecció de l'objecte estigui dins de la imatge i en condicions de visualització de perspectiva dèbil durant tota la seqüència. En la segona part d'aquest treball, s'estudia el seguiment de contorns actius en el marc de la visió activa per tal de superar aquesta limitació. És una relació natural, atès que el seguiment de contorns actius es pot veure com una tècnica per fixar el focus d'atenció. En primer lloc, s'han estudiat les propietats de les càmeres amb zoom i s'ha proposat un nou algorisme per determinar la profunditat de la càmera respecte a un objecte qualsevol. L'algorisme inclou un senzill calibratge geomètric que no implica cap coneixement sobre els paràmetres interns de la càmera. Finalment, per tal d'orientar la càmera adequadament, compensant en la mesura del possible els moviments del robot, s'ha desenvolupat un algorisme per al control dels mecanismes de zoom, capcineig i guinyada, i s'ha adaptat l'algorisme d'estimació del moviment incorporant-hi els girs coneguts del capcineig i la guinyada. / This thesis deals with the motion estimation of a mobile robot from changes in the images acquired by a camera mounted on the robot itself. The motion is deduced with an algorithm previously proposed in the framework of qualitative navigation. In order to employ this algorithm in real situations, a study of its accuracy has been performed. Moreover, relationships with the active vision paradigm have been analyzed, leading to an increase in its applicability.When perspective effects are not significant, two views of a scene are related by an affine transformation (or affinity), that it is usually computed from point correspondences. In this thesis we explore an alternative and at the same time complementary approach, using the contour of an object modeled by means of an active contour. The framework is the following: when the robot moves, the projection of the object in the image changes and the active contour adapts conveniently to it; from the deformation of this contour, expressed in shape space, the robot egomotion can be extracted up to a scale factor. Active contours are characterized by the speed of their extraction and their robustness to partial occlusions. Moreover, a contour is easy to find even in poorly textured scenes, where often it is difficult to find point features and their correspondences.The goal of the first part of this work is to characterize the accuracy and the uncertainty in the motion estimation. Some practical experiences are carried out to evaluate the accuracy, showing the potentiality of the algorithm in real environments and with different robots. We have studied also the epipolar geometry relating two views of a planar object. We prove that the affine epipolar direction between two images can be recovered from a shape vector when the camera motion is free of cyclorotation. With a battery of simulated as well as real experiments, the epipolar direction allows us to analyze the global accuracy of the affinity in a variety of situations: different contour shapes, extreme visualization conditions and presence of noise.Regarding uncertainty, since the implementation is based on a Kalman filter, for each motion estimate we have also its covariance matrix expressed in shape space. In order to propagate the uncertainty from shape space to 3D motion space, two different approaches have been followed: an analytical and a statistical one. This study has allowed us to determine which degrees of freedom are recovered with more accuracy, and what correlations exist between the different motion components. Finally, an algorithm to propagate the motion uncertainty at video rate has been proposed.One of the most important limitations of this methodology is that the object must project onto the image under weak-perspective visualization conditions all along the sequence. In the second part of this work, active contour tracking is studied within the framework of active vision to overcome this limitation. Both relate naturally, as active contour tracking can be seen as a focus-of-attention strategy.First, the properties of zooming cameras are studied and a new algorithm is proposed to estimate the depth of the camera with respect to an object. The algorithm includes a simple geometric calibration that does not require any knowledge about the camera internal parameters.Finally, in order to orientate the camera so as to suitably compensate for robot motion when possible, a new algorithm has been proposed for the control of zoom, pan and tilt mechanisms, and the motion estimation algorithm has been updated conveniently to incorporate the active camera state information.

This thesis presents "Eurythmy as visible speech", the art of movement which was developed by Rudolf Steiner (1863-1925), as a tool which can enable architects to recognize and create architectural forms from the sources of all possible forms: formative forces that can be found in speech sounds, consonants and vowels of human languages. In 1912 R. Steiner began to develop the art of Eurythmy from its original ancient Grecian roots of movement in space. Simultaneously and related to Eurythmy, R. Steiner created the first Goetheanum, a building for talks and presentations of performing arts. This building burnt down in 1921. A year later he modelled the forms of a second Goetheanum. The relation of R. Steiner's artistic intention to artists and thinkers, is looked up through the development of observation. Among the examples of the modern movement is analysed the observation based in poetry of the group of architects "Amereida", Chile.Observation is fundamental in the artistic process, today is recognized as a common patrimony. Considering Eurythmy as a tool for observation and creation, the formal expression of the gestures of speech appears. Therefore time is introduced into space, process is introduced, the becoming of forms, the moving form of the speech sounds through the human body become architectural forms. To make this visually understandable, buildings are analysed from the point of view Resume of the thesis: "Towards a spiritualization of matter through architecture" This thesis presents "Eurythmy as visible speech", the art of movement which was developed by Rudolf Steiner (1863-1925), as a tool which can enable architects to recognize and create architectural forms from the sources of all possible forms: formative forces that can be found in speech sounds, consonants and vowels of human languages. In 1912 R. Steiner began to develop the art of Eurythmy from its original ancient Grecian roots of movement in space. Simultaneously and related to Eurythmy, R. Steiner created the first Goetheanum, a building for talks and presentations of performing arts. This building burnt down in 1921. A year later he modelled the forms of a second Goetheanum. The relation of R. Steiner's artistic intention to artists and thinkers, is looked up through the development of observation. Among the examples of the modern movement is analysed the observation based in poetry of the group of architects "Amereida", Chile.Observation is fundamental in the artistic process, today is recognized as a common patrimony. Considering Eurythmy as a tool for observation and creation, the formal expression of the gestures of speech appears. Therefore time is introduced into space, process is introduced, the becoming of forms, the moving form of the speech sounds through the human body become architectural forms. To make this visually understandable, buildings are analysed from the point of view of the sounds of speech. The form tendencies that can be observed in Eurythmy and architecture can also be found in forms of sculpture, painting, scientific experiment with substances in movement, as well as in manifestations of nature: in water, minerals, plants, clouds, animals, man, etc. which are illustrated with examples; for instance the archetypal form of the sound K can be seen in the crystallization of certain minerals, etc.The possibility of observation and creation out of what is process, is related to capacities that the artist himself can develop. In this sense the basis of Eurythmy is also the basis of Anthroposophy, which is a modern way of opening and expanding human capacities for perception and creation, based on R. Steiner's discovery of the Goetheanistic observation which asks the observer to be able to unite his own life forces with the observed object, to become one with the observed object, in order to be able to experience and recognize the forces from which it has been formed. R. Steiner developed the movements and gestures of Eurythmy from the observation of speech process, Goethe create his theory on the metamorphosis of the plant, and his Faust observing processes.This way of observation is vital for a modern experience of the world, includes the time and the invisible life sources from which all things become visible. Goethe observes the spirit concretely in what he has in front. This is new: the spirit is no more a matter of faith, abstract and far away but something concrete. After have described the formal tendencies of the sounds of speech according to the results from R. Steiner's research, are presented models as possible formal results of this specific dialog between word and form. The application of Eurythmy as a tool in architecture is an expansion of consciousness in the realm of the perception of form, and its possible effects on the development of the human beings that produce and live it.

En aquesta memòria presentem tres treballs dedicats a l'estudi d'equacions diferencials estocàstiques dirigides per un moviment Bromnià fraccionari.La primera equació diferencial estocàstica que estudiarem és una equació amb retard i amb restriccions de positivitat. Com que el retard (R) és en aquest cas un valor positiu, hem de donar com a condició inicial la solució de l'equació a l'interval [-r; 0], que serà X(t) = ni(t), on la funció "mi" serà una funció determinista no negativa. El terme Y és el que ens permetrà assegurar que la solució de l'equació sigui sempre positiva.La metodologia utilitzada per provar els resultats per a aquesta equaciói per a la següent que presentarem és similar, encara que amb dificultats tècniques diferents. Considerem equacions deterministes i demostrem els resultats per aquest tipus d'equacions. Llavors com que entenem la integral estocàstica que apareix com una integral de Riemann-Stieltjes és fàcil aplicar els resultats obtinguts a les nostres equacions diferencials estocà tiques. Es tracta de la metodologia utilitzada per Nualart i Răşcanu a [3].La segona equació que treballarem és una equació diferencial estocàstica de Volterra a R(d). Per aquesta equació demostrarem l'existència i la unicitat de solució, i provarem que la solució té moments finits. Observem que els nostres resultats inclouen com a cas particular els resultats obtinguts per Nualart i Răşcanu a [3].L'interès d'aquesta part recau en l'obtenció d'estimacions per a les integrals de Lebesgue i Riemann-Stieltjes. Amb aquestes estimacions, obtenim les mateixes cotes que les de [3], i la demostració de l'existència i unicitat s'aconsegueix seguint els mateixos passos que fan Nualarti Rascanu per la seva equació.Finalment, l'últim treball fa referència a l'estudi d'aquesta equació diferencial d-dimensional dx(t )= f(x(t))dy(t) on la funció de control y no és diferenciable però és B-Holder contínua. Una manera d'estudiar aquestes equacions si la funci_o de control és B-Holder contínua d'ordre B>1/2 , és la desenvolupada per Nualart i Răşcanu a [3]. Aquest mètode ha sigut estès en un treball recent de Hu i Nualart [2] pel cas que B pertanguès a (1/3, ½). El propòsit del nostre treball és obtenir estimacions precises per a la norma del suprem per a la soluci_o de l'equació utilitzant la metodologia introduïda a [2]. Com a aplicació d'aquests resultats, deduïrem l'existència de moments per a les solucions d'equacions diferencials estocàstiques dirigides per un moviment Brownià fraccionari amb paràmetre de Hurst H pertany a (1/3, ½).Obtindrem, finalment, una estimació per la norma del suprem de la derivada de Malliavin de la solució de l'equació anterior. Aquests resultats generalitzen el treball de Hu i Nualart [1] pel cas H > 1/2.REFERÈNCIES:[1] Hu, Y.; Nualart, D. "Differential equations driven by Hölder continuous functions of order greater than ½. Stochastic analysis and applications", 399-413, Abel Symp., 2, Springer, Berlin, 2007.[2] Hu, Y.; Nualart, D. "Rough path analysis via fractional calculus". Transactions of the American Mathematical Society 361, (2009), 2689-2718.[3] Nualart, D.; Răşcanu, A. "Differential equations driven by fractional Brownian motion". Collect. Math. 53 (2002) 55-81. / "Stochastic Differential Equations driven by a fractional Brownian Motion"By Mireia Besaló i MayolTEXT:This dissertation is devoted to the presentation of three contributions to the study of differential stochastic equations driven by a fractional Brownian motion.The first equation we study is an stochastic delay differential equation with reflection and non-negativity constraints. The second equation we work with is an stochastic Volterra equation on R(d). For that equation, like for the first one, we will prove the existence and uniqueness of solution, and we also prove the solution has finite moments. Our results include as a particular case the results obtained by Nualart and Răşcanu in [2].Finally, the last contribution it is about this d-dimensional differential equation dx(t) = f(x(t))dy(t), where the control function "y" is non-differenciable but is B-Hölder continuous. If B>1/2, one way to study these equations is the one used in [2]. That method has been extended by Hu and Nualart [1] to the case B belongs to (1/3, ½)For that equation we obtain precise estimates of the supremum norm of the solution of the equation. As an application of these results, we deduce the existence of moments and an estimate of the supremum norm of the Malliavin derivative of the solution of stochastic differential equations driven by a fractional Brownian motion with Hurst parameter H belongs to (1/3, ½). REFERENCES:[1] Hu, Y.; Nualart, D. "Rough path analysis via fractional calculus". Transactions of the American Mathematical Society 361, (2009), 2689-2718.[2] Nualart, D.; Răşcanu, A. "Differential equations driven by fractional Brownian motion". Collect. Math. 53 (2002) 55-81.

La finalidad fundamental de esta tesis es poner de manifiesto la importancia del movimiento obrero durante la dictadura franquista y los primeros años de la transición y cómo contribuyeron en él los militantes obreros católicos. Con ello se pretende recuperar la memoria de los trabajadores y de las trabajadoras que arriesgaron algo más que su puesto de trabajo para mejorar sus condiciones de vida y recuperar las libertades individuales y derechos sociales así como las libertades y derechos nacionales. Se trata, por tanto, de analizar cómo se realizó esta contribución católica al movimiento obrero y cuales fueron sus consecuencias tanto en el ámbito sindical y político como en el eclesiástico. En esta tesis se han estudiado los movimientos apostólicos JOC, HOAC y ACO así como el colectivo de sacerdotes y religiosos en el mundo del trabajo, las Comunidades Cristianas Populares y el movimiento Cristianos por el socialismo. Una vez estudiados estos movimientos se expone la participación de los militantes de estos movimientos y grupos cristianos en las organizaciones sindicales de clase así como su participación en las elecciones sindicales, luchas y conflictos sociales y en las organizaciones políticas situadas en el espectro político de la izquierda. También se estudia la evolución política y religiosa de los militantes entrevistados que aparecen reseñados en el anexo de esta tesis. La repercusión de la acción de estos militantes en el seno de la Iglesia fue prácticamente nula ya que su jerarquía no tuvo en cuenta la manera de vivir y de concebir la fe de éstos. No fue así en algunas parroquias de la diócesis de Barcelona ya que éstas sí que fueron influenciadas por la presencia en ellas de los militantes obreros católicos. Todo ello fue el resultado de la estrecha colaboración de los párrocos de estas iglesias con el movimiento obrero de Barcelona. La repercusión en el ámbito sindical y político sí que fue positivo en cuanto las organizaciones obreras de clase, tanto las del ámbito sindical como político, cambiaron su tradicional anticlericalismo por una orientación ideológica laica. Se normalizó la presencia de cristianos en las organizaciones obreras, fundamentalmente en CCOO y en el PSUC, lo cual demuestra la normalidad y naturalidad en la que convivieron creyentes y no creyentes. También es importante subrayar, la voluntad de los militantes católicos obreros de no crear organizaciones confesionales paralelas a las organizaciones de clase ya existentes en las cuales se integraron. Todo ello contribuyó a la unidad del movimiento obrero y evitar divisiones que se fundamentaran en el hecho religioso. Esta nueva realidad supone una ruptura con el sindicalismo catalán anterior a la guerra civil, el cual se posicionaba claramente enfrentado a la Iglesia. Por otra parte, también es importante destacar la aportación de los militantes no creyentes hacia sus compañeros creyentes, en cuanto que estos últimos se replantearon su manera de vivir la fe a partir de su convivencia con compañeros agnósticos o ateos que eran un ejemplo de coherencia ética y política en su acción cotidiana. La colaboración entre militantes obreros de procedencia católica junto a compañeros no creyentes contribuyó a la humanización y sensibilidad por los sectores más desfavorecidos de la clase obrera. En todo este proceso, muchos militantes obreros católicos no sólo abandonaron la Iglesia institucional sino que también abandonaron la fe. En el aspecto religioso, no cabe duda de que este abandono, junto a la poca influencia que ejercieron los militantes en la cúpula de la jerarquía de la Iglesia católica, ofrece un saldo claramente negativo, mientras que el plano sindical y político el avance que se produjo fue claramente positivo. No obstante, todos los militantes, tanto lo que continuaron siendo creyentes como lo que abandonaron la fe, valoran positivamente su pertenencia a algunos de los movimientos o grupos cristianos estudiados en esta tesis. / The Catholic participation of the workers' movement in Barcelona (1946-1978).The main aim of this thesis is to highlight the importance of the workers' movement during Franco's dictatorship and the first years of the political transition towards democracy. We will also see how Catholic working activists contributed to this movement. In this way, we recover the memory of all those working men and women who risked something more than their jobs in order not only to improve their living conditions and recover their individual and social rights, but also their national rights. We try, therefore, to analyse the way this Catholic contribution took place in the workers' movement and which were its consequences not only in labour and political matters but also in the church.The framework is the diocese of Barcelona, but everything in this thesis is within the bounds of the general context of the Catalan and Spanish workers' movement together with the institutional church. Particular emphasis is placed on its social doctrine because it gave guidance to the action of the Catholic working militants in that diocese, which was governed by the archbishops Modrego, González Martín and Narcís Jubany during the period studied here.We will make a general approach to the HOAC, JOC and ACO, the priests and religious people in the working world, Comunidades Cristianas Populares and Cristianos por el Socialismo, as well as to the participation of these groups of militants in the elections of the trade unions which were called by Franco's regime, in trade union conflicts and in political and labour organizations against Franco.The most outstanding contributions of this participation were several. We will underline the boost these movements gave to their militants so that they joined trade unions and therefore it was unnecessary to create denominational organizations. It also promoted women's participation in these organizations and contributed to the fact that all former anticlerical political parties not also stopped being anticlerical, but what is more, they admitted Catholic working militants, without them having to renounce their faith.