Zugl.: Eichstätt, Kath. Universiẗat, Diss., 2001.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-05-31T13:46:49Z No. of bitstreams: 1 renanaugustodembogurski.pdf: 5268461 bytes, checksum: c9599f64f511590d6ff74c1f707b6e08 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-06-01T11:34:15Z (GMT) No. of bitstreams: 1 renanaugustodembogurski.pdf: 5268461 bytes, checksum: c9599f64f511590d6ff74c1f707b6e08 (MD5) / Made available in DSpace on 2017-06-01T11:34:15Z (GMT). No. of bitstreams: 1 renanaugustodembogurski.pdf: 5268461 bytes, checksum: c9599f64f511590d6ff74c1f707b6e08 (MD5) Previous issue date: 2013-03-06 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Este trabalho apresenta um método que permite a deformação de um terreno pela modificação do seu mapa de alturas em um ambiente de realidade aumentada. A estrutura hierárquica de malhas A4-8 foi utilizada para representar o terreno. Essa estrutura define um espaço paramétrico para calcular as coordenadas de um terreno no espaço Euclidiano R3. Em especial, este trabalho lida com o problema de modelagem de terrenos esféricos. Uma métrica de erro dependente do observador e da geometria do terreno utilizada tanto para sua observação quanto para sua modelagem. Os resultados demonstram que o uso da malha A4-8 em conjunto com o sistema de realidade aumentada tangível é flexível para modelar terrenos esféricos e pode ser facilmente modificada para terrenos com a topologia do cilindro e do toro. O desenvolvimento de um método de geração de malhas eficiente e de uso intuitivo, baseado em marcadores de realidade aumentada, é a principal contribuição deste trabalho. / This work presents a method that allows the deformation of a terrain by modifying your heightmap in an augmented reality environment. The hierarchical structure of A4 8 meshes was used to represent terrains. This structure defines a parameter space to calculate the coordinates of a field in the R3 Euclidean space. In particular, this paper deals with the problem of modeling spherical terrains. An error metric dependent on the observer and the geometry of the land used for its observation and modeling. The results demonstrate that the use of A4-8 mesh combined with the tangible augmented reality system is flexible to shape spherical terrains and can be easily modified to deal with other topologies, such as the torus and the cylinder. The development of an efficient and intuitive to use method for mesh generation, based on augmented reality markers, is the main contribution of this work.

Diese Abhandlung umreißt die früheste Entwicklung der kompositorischen Fähigkeiten Wolfgang Amadé Mozarts in ihren Grundzügen anhand jener Werke, die in den beiden Notenbüchern – einmal das sogenannte Nannerl–Notenbuch, zum anderen das Londoner Skizzenbuch – erhalten sind, und beschreibt damit Entwicklungslinien und Momentaufnahmen von kurz vor Mozarts 5. bis nach seinem 8. Geburtstag. Der Schwerpunkt der Darstellung liegt dabei auf der Analyse der hier überlieferten Werke, stellt diese jedoch nicht nur einen in Zusammenhang mit den pädagogischen Zielsetzungen und Idealen des Vaters Leopold Mozart wie sie dessen »Versuch einer gründlichen Violinschule« überliefert, sondern zeigt auch wie sich andere Vorbilder in Mozarts ersten Kompositionen niederschlugen. Damit gibt diese Arbeit Impulse nicht nur für eine wesentliche Neubewertung der Rolle Leopold Mozarts als Vater und musikalischem Erzieher sondern auch für das Verständnis des musikalischen Werdegangs von Wolfgang Mozart als Kind. / This treatise outlines the early musical development of Wolfgang Amadé Mozart and his beginnings as a composer by a close look on those compositions which were passed on in the two famous notebooks: the Nannerl Notebook and the London Sketchbook. Thus we can follow the earliest steps and the turningpoints of the musical genius from shortly before his fifth birthday until the age of about eight years. The author analyses these works not only within the context of the educational aims and ideals of Mozart’s father Leopold, who had laid his ideas down in his didactic work »Versuch einer gründlichen Violinschule«, but shows also how certain examples influenced Mozart’s own works. So this thesis not only develops new aspects of the role of Leopold Mozart as a father and musical teacher but also conveys a fascinating insight into the mind of the musical genius as a child.

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<p>My thesis revolves around neuronal circuit dynamics in health and disease. The first part of the thesis characterized cross-regional synchrony within the visual cortical network following visual perceptual experience in healthy mice. This work for the first time described inter-areal 4-8 Hz superficial layer LFP synchrony across mouse visual cortical regions persisting beyond visual stimulation time window, and revealed that the synchrony was expressed specifically between V1 and the higher-order visual area (HVA) with functional preference matching the entrained spatial frequency (SF) and temporal frequency (TF) content, in mice. The discovery of visual familiarity induced inter-areal 4-8 Hz synchrony extends the previous discovery of the 4-8 Hz oscillation in V1 after visual experience from our lab (Kissinger et al., 2018; Kissinger et al., 2020; Gao et al., 2021), and provided the first pivotal evidence supporting the role of 4-8 Hz oscillation in mediating cross-regional communication. Such 4-8 Hz visual cortical network synchrony has been mostly reported in primate studies in contexts of visual attention and working memory (Liebe et al., 2012; Spyropoulos et al., 2018), while our study extended the visual cortical network synchrony research scope to mouse models and in a new context of visual familiarity. The work is a key step for starting cortical network studies in mice, and for starting predictive coding theory study in the context of oscillations in mouse cortical network in the future. Additionally, unit spiking was more strongly modulated by 4-8 Hz oscillations in V1 and HVAs after visual experience. The visually-locked responsive units in V1 and HVAs exihibted either increased or decreased inter-areal spiking synchrony, while most post-stimulus responsive units in V1 and HVA exhibited higher spiking synchrony. </p> <p>The other parts of my dissertation looked at V1 activity in disease and following a novel CNS therapy. One project looked at recovery of visually evoked response in mouse V1 after ischemia through NeuroD1 mediated astrocyte-to-neuron conversion, where we characterized the formation of cortical laminated structure from the converted neurons, longitudinal recovery of visually evoked responses of unit populations in V1, and units’ selective responses to orientations. Another project looked at altered visual cortical activity in an Auxilin knockout mouse model, which demonstrated overall reduced visually evoked responses, less selective responses to orientations, impaired visual adaptive responses and mismatch responses, as well as slower visual experience induced oscillations. These projects utilized the high-density silicon probe recording technique to 1) characterize visual cortical function recovery following a therapy, which provided evidence for its high efficacy for recovering physiological functions, and to 2) phenotype visual cortical functional impairments in a mouse disease model, which provided more basic understanding in visual cortical physiology of Auxilin related disease.</p> <p>In sum, my dissertation work took advantage of the high-density silicon probe recording technique to probe neuronal circuits in health and disease. The discovery of visual experience induced inter-areal 4-8 Hz synchrony paves the way for studying 4-8 Hz activity in relation to stream-dependent visual processing and predictive coding in health and disease.</p>