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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

Progressive Web Applications and Code Complexity : An analysis of the added complexity of making a web application progressive

Johannsen, Fabian January 2018 (has links)
Web applications have a common code base across multiple platforms, but have previously lacked some core features compared to native applications. However, recent web technology advancements have, in terms of functionality and user experience, reduced the gap between the two development approaches. Applications that leverages these technology advancements are dubbed progressive web applications, or PWA. This thesis explores the concepts of PWA and how it, in terms of code complexity, affects an Angular web application. The results show that implementing considered PWA features does not excessively increase the size of the application and that the overall added complexity is low. The complexity of PWA lies in all the new technology concepts, which are probably unfamiliar to most developers. To reduce this complexity, automated PWA tooling shows great promise, and using Angular PWA tooling when building Angular applications seems to minimize this complexity.
112

Progressive and Random Accessible Mesh Compression / Compression Progressive et avec Accès Aléatoire de Maillages

Maglo, Adrien, Enam 10 July 2013 (has links)
Les travaux de l'état de l'art en compression progressive de maillages se sont concentrés sur les maillages triangulaires. Mais les maillages contenant d'autres types de faces sont aussi couramment utilisés. Nous proposons donc une nouvelle méthode de compression progressive qui peut efficacement encoder des maillages polygonaux. Ce nouvel algorithme atteint un niveau de performance comparable aux algorithmes dédiés aux maillages triangulaires. La compression progressive est liée à la décimation de maillages car ces deux applications génèrent des niveaux de détail. Par conséquent, nous proposons une nouvelle métrique volumique simple pour guider la décimation de maillages polygonaux. Nous montrons ensuite que les possibilités offertes par les algorithmes de compression progressive peuvent être exploitées pour adapter les données 3D en proposant un nouveau cadre applicatif pour la visualisation scientifique distante. Les algorithmes de compression progressive avec accès aléatoire peuvent mieux adapter les données 3D aux différentes contraintes en prenant en compte les régions d'intérêt de l'utilisateur. Notre premier algorithme de ce type est basé sur une segmentation préliminaire du maillage d'entrée. Chaque grappe est ensuite compressée de manière indépendante par un algorithme progressif. Notre second algorithme est basé sur le groupement hiérarchique des sommets obtenu par la décimation. Cette seconde méthode offre une forte granularité d'accès aléatoire et génère des maillages décompressés en une pièce avec des transitions lisses entre les parties décompressées à différents niveaux de détail. Des résultats expérimentaux démontrent l'efficacité des deux approches. / Previous work on progressive mesh compression focused on triangle meshes but meshes containing other types of faces are commonly used. Therefore, we propose a new progressive mesh compression method that can efficiently compress meshes with arbitrary face degrees. Its compression performance is competitive with approaches dedicated to progressive triangle mesh compression. Progressive mesh compression is linked to mesh decimation because both applications generate levels of detail. Consequently, we propose a new simple volume metric to drive the polygon mesh decimation. We apply this metric to the progressive compression and the simplification of polygon meshes. We then show that the features offered by progressive mesh compression algorithms can be exploited for 3D adaptation by the proposition of a new framework for remote scientific visualization. Progressive random accessible mesh compression schemes can better adapt 3D mesh data to the various constraints by taking into account regions of interest. So, we propose two new progressive random-accessible algorithms. The first one is based on the initial segmentation of the input model. Each generated cluster is compressed independently with a progressive algorithm. The second one is based on the hierarchical grouping of vertices obtained by the decimation. The advantage of this second method is that it offers a high random accessibility granularity and generates one-piece decompressed meshes with smooth transitions between parts decompressed at low and high levels of detail. Experimental results demonstrate the compression and adaptation efficiency of both approaches.
113

HabitaÃÃo Progressiva AutoconstruÃda: CaracterizaÃÃo MorfolÃgica com Uso da GramÃtica da Forma / Self-constructed progressive housing: morphological characterization using the shape Grammar

Mayra Soares de Mesquita Mororà 29 August 2012 (has links)
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / O presente trabalho se insere no campo de pesquisas sobre a habitaÃÃo espontÃnea, com foco nos processos progressivos de produÃÃo das moradias. Considera como problemÃtica a escassez de estudos a respeito do objeto, no que se refere Ãs tipologias emergentes dos processos de autoconstruÃÃo. Para seu alcance foi desenvolvido um estudo de caso na ZEIS do Pici em Fortaleza, capital do Estado do CearÃ, aplicado a partir de um arranjo metodolÃgico que envolveu o levantamento fÃsico e o registro da progressividade na construÃÃo de 94 casas. Estas informaÃÃes foram examinadas e descritas adotando-se a gramÃtica da forma â ferramenta de anÃlise criada por Stiny e Gips na dÃcada de 70 â como instrumento de representaÃÃo da lÃgica que envolve a formaÃÃo das unidades. A partir dos dados coletados, buscou-se por recorrÃncias de formas, com a finalidade de compreender as caracterÃsticas morfolÃgicas das habitaÃÃes em consonÃncia com as pesquisas sobre tipo, de acordo com a definiÃÃo de Rossi e Argan. ApÃs a anÃlise dos dados, propÃs-se o registro da morfologia resultante da progressividade na construÃÃo a partir do sistema gerador de formas supracitado. Os resultados encontrados indicam uma multiplicidade de fatores envolvidos na produÃÃo autÃnoma da moradia, os quais se vinculam diretamente Ãs formas emergentes, e apontam para a necessidade de estudos direcionados a estes fragmentos especÃficos da cidade, visto que a compreensÃo da morfologia passa, antes de tudo, pelo entendimento do contexto urbano no qual a habitaÃÃo està inserida. A partir dos conhecimentos alcanÃados, a pesquisa contribui com um mÃtodo que especula sobre formas futuras; e um apanhado de conhecimento sobre o usuÃrio, que pode indicar um caminho para o desenvolvimento de projetos habitacionais mais adequados Ãs necessidades deste pÃblico, assim como para o subsÃdio em programas de assistÃncia tÃcnica aplicados ao cenÃrio estudado. / This paper concerns the spontaneous habitation focused on the progressive production processes of housing. It considers as problematic the relative scarcity of studies on that subject, particularly in relation to the emergent typologies of self-construction processes. Therefore, it was developed a case study in the Planalto Pici â a Special Zone of Social Interest (ZEIS) in Fortaleza, capital of the state of CearÃ, Brazil â applied from a methodological arrangement involving the physical measurements and registration of progressivity in the construction of 94 houses. This information was examined and described by adopting the shape grammar - analysis tool created by Stiny and Gips in the 70s - as an instrument of representation of logic that involves the formation of units. From the data collected, we sought for recurrences of forms, in order to understand the morphological characteristics of dwellings in line with research on type, according to the definition of Rossi and Argan. The results indicate a multiplicity of factors involved in the production of autonomous housing and point to the need for research focusing on these specific fragments of the city, considering that understanding the morphology requires an understanding of the urban context. Based on the knowledge attained, the research contributes a method that speculates on future forms, and an overview of knowledge about the user, which may indicate a path for the development of housing design projects best suited to the needs of the public as well as to grant in technical assistance programs applied to the study environment.
114

O efeito de práticas sociais com leitura e escrita em um caso de afasia progressiva : (re)encontros / The efect of social practices with reading and writing in a case of progressive aphasia : (re)encounters

Mazuchelli, Larissa Picinato, 1986- 21 August 2018 (has links)
Orientador: Rosana do Carmo Novaes Pinto / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem / Made available in DSpace on 2018-08-21T11:43:18Z (GMT). No. of bitstreams: 1 Mazuchelli_LarissaPicinato_M.pdf: 6512450 bytes, checksum: 12e5034b7c0e50fcb0d9ea53f571bdf4 (MD5) Previous issue date: 2012 / Resumo: Ao retomarmos a história da afasiologia, observamos que a linguagem oral, até o século XIX, era reduzida a um ato motor e a escrita era vista unicamente como simulacro da fala. Essas concepções ainda estão presentes, contudo, na literatura neurolinguística tradicional, que não apenas dicotomiza a relação entre oralidade e escrita, mas baseia-se em características de uma escrita normativa padrão para avaliar a linguagem de sujeitos afásicos - geralmente de forma superficial e com a consequente patologização de fenômenos que caracterizam processos normais. Na contramão dessas tendências, este estudo de caso fundamenta-se na Neurolinguística de orientação enunciativo-discursiva, em que a linguagem é concebida como um fenômeno sócio-histórico, uma atividade humana, lugar de interação e interlocução de sujeitos, indeterminada, incompleta e passível de (re)interpretação, em que tanto o sujeito quanto ela própria se constituem em um movimento dinâmico. Tendo esses princípios como cenário, o objetivo deste trabalho é discutir o impacto dos episódios neurológicos na vida do sujeito AJ que há mais de dez anos dribla as dificuldades impostas por uma afasia progressiva - assim caracterizada uma vez que prevalecem os indícios do agravamento dos sinais (sintomas) reconhecidamente relacionados ao chamado "declínio cognitivo", na literatura neuropsicológica. A reflexão, realizada por meio da análise qualitativa das produções escritas anteriores aos eventos neurológicos de AJ e de suas produções orais e escritas posteriores a eles - nas sessões de atendimento individual e coletivo do Grupo III do CCA (Centro de Convivência de Afásicos) -, trata (i) do efeito das práticas sociais com a linguagem (especialmente com as atividades de leitura e escrita) na (re)organização linguístico-cognitiva, o que possibilita, ainda que sob o impacto da afasia e do severo comprometimento cognitivo, que AJ se mantenha na língua(gem) e nas relações sociais; (ii) da inter-relação entre oralidade e escrita, que tem maior visibilidade em um caso-limite como o de AJ, para quem a escrita é lugar de (re)encontros e ponto de apoio para seu querer-dizer. Assim, buscamos contribuir para o desenvolvimento teórico acerca do funcionamento da linguagem nas patologias e para o acompanhamento terapêutico de sujeitos com comprometimentos linguísticocognitivos / Abstract: Considering the history of aphasiology, we observe that the oral language, up to the 19th century, was reduced to a motor act, while writing was seen as a simulacrum of the speech. Such concepts are still present, however, in the traditional neurolinguistics literature, which not only dichotomizes the relation between orality and writing, but is based on characteristics of a standard normative writing to evaluate the language of aphasic subjects - generally in a superficial way and with the consequent act of considering pathological phenomena that characterize normal processes. Opposing such tendencies, this case study is based on the discursive-enunciative Neurolinguistics, which conceives language as a socio-historic phenomenon, a human activity, locus of interaction and interlocution of subjects, indeterminate, incomplete and capable of (re)interpretation, in which both subject and the language constitute each other in a dynamic movement. Having these principles as scenery, the objective of this work is discuss the impact of the neurologic episodes in AJ's life, who has been struggling, for over ten years, with the difficulties imposed by the so-called progressive aphasia - characterized by the continuous aggravation of the signs (symptoms) and by being closely related to "cognitive decline" in the neuropsychological literature. The research - guided by a qualitative analysis of AJ's writings produced before the neurological events, and of his oral and written productions after the strokes in individual and collective sessions of the Group III of CCA (Centro de Convivência de Afásicos) - discusses (i) the effect of social practices with language (especially with the activities of reading and writing) in the cognitive-linguistic (re)organization, which enables AJ, despite the impact of the aphasia and of the severe cognitive compromising, to dwell in the language and in social relations; (ii) the interrelation between orality and writing, which has higher visibility in a limit-case as AJ's, to whom writing is the locus of (re)encounter and as a keystone to his will of speech. Thus, we aim to contribute to the theoretical development of language functioning in pathologies and to the therapeutic follow-up of subjects with cognitive-linguistic compromising / Mestrado / Linguistica / Mestra em Linguística
115

Resilience of Cloud Networking Services for Large Scale Outages

Pourvali, Mahsa 06 April 2017 (has links)
Cloud infrastructure services are enabling organizations and enterprises to outsource a wide range of computing, storage, and networking needs to external service providers. These offerings make extensive use of underlying network virtualization, i.e., virtual network (VN) embedding, techniques to provision and interconnect customized storage/computing resource pools across large network substrates. However, as cloud-based services continue to gain traction, there is a growing need to address a range of resiliency concerns, particularly with regards to large-scale outages. These conditions can be triggered by events such as natural disasters, malicious man-made attacks, and even cascading power failures. Overall, a wide range of studies have looked at network virtualization survivability, with most efforts focusing on pre-fault protection strategies to set aside backup datacenter and network bandwidth resources. These contributions include single node/link failure schemes as well as recent studies on correlated multi-failure \disaster" recovery schemes. However, pre-fault provisioning is very resource-intensive and imposes high costs for clients. Moreover this approach cannot guarantee recovery under generalized multi-failure conditions. Although post-fault restoration (remapping) schemes have also been studied, the effectiveness of these methods is constrained by the scale of infrastructure damage. As a result there is a pressing need to investigate longer-term post-fault infrastructure repair strategies to minimize VN service disruption. However this is a largely unexplored area and requires specialized consideration as damaged infrastructures will likely be repaired in a time-staged, incremental manner, i.e., progressive recovery. Furthermore, more specialized multicast VN (MVN) services are also being used to support a range of content distribution and real-time streaming needs over cloud-based infrastructures. In general, these one-to-many services impose more challenging requirements in terms of geographic coverage, delay, delay variation, and reliability. Now some recent studies have looked at MVN embedding and survivability design. In particular, the latter contributions cover both pre-fault protection and post-fault restoration methods, and also include some multi-failure recovery techniques. Nevertheless, there are no known efforts that incorporate risk vulnerabilities into the MVN embedding process. Indeed, there is a strong need to develop such methods in order to reduce the impact of large-scale outages, and this remains an open topic area. In light of the above, this dissertation develops some novel solutions to further improve the resiliency of the network virtualization services in the presence of large outages. Foremost, new multi-stage (progressive) infrastructure repair strategies are proposed to improve the post-fault recovery of VN services. These contributions include advanced simulated annealing metaheuristics as well as more scalable polynomial-time heuristic algorithms. Furthermore, enhanced \risk-aware" mapping solutions are also developed to achieve more reliable multicast (MVN) embedding, providing a further basis to develop more specialized repair strategies in the future. The performance of these various solutions is also evaluated extensively using custom-developed simulation models.
116

Connectivity biomarkers in neurodegenerative tauopathies

Rittman, Timothy January 2015 (has links)
The primary tauopathies are a group of neurodegenerative diseases affecting movement and cognition. In this thesis I study Progressive Supranuclear Palsy (PSP) and the Corticobasal Syndrome (CBS), two parkinsonian disorders associated with accumulation of hyperphos- phorylated and abnormally folded tau protein. I contrast these two disorders with Parkinson’s disease (PD), which is associated with the accumulation of alpha-synuclein but has a genetic association with the MAPT gene encoding tau. Understanding the tauopathies to develop effective treatments will require a better grasp of the relationships between clinical syndromes and cognitive measures and how the anatomical and neurochemical networks that underlie clinical features might be altered by disease. I investigate simple clinical biomarkers, showing that a two-minute test of verbal fluency is a potential diagnostic biomarker to distinguish between PD and PSP and that the ACE-R and its subscores could play a role in monitoring cognition over time in PD, PSP and CBS. I assess the implementation of network analysis in Functional Mag- netic Resonance Imaging (fMRI) data, introduce Maybrain software for graphical network analysis and visualisation. I go on to show an overlap between graph theory network measures and I identify three main factors underlying graph network measures of: efficiency and distance, hub characteristics, network community measures. I apply these measures in PD, PSP and the CBS. All three diseases caused a loss of functional connectivity in com- parison to the control group that was concentrated in more highly connected brain regions and in longer distance connections. In ad- dition, widely localised cognitive function of verbal fluency co-varied with the connection strength in highly connected regions across PD, PSP and CBS. To take this further, I investigated specific functional covariance networks. All three disease groups showed reduced connectivity between the basal ganglia network and other networks, and between the anterior salience network and other networks. Localised areas of increased co- variance suggest a breakdown of network boundaries which correlated with motor severity in PSP and CBS, and duration of disease in CBS. I explore the link between gene expression of the tau gene MAPT and its effects on functional connectivity showing that the expression of MAPT correlated with connection strength in highly connected hub regions that were more susceptible to a loss of connection strength in PD and PSP. I conclude by discussing how tau protein aggregates and soluble tau oligomers may explain the changes in functional brain networks. The primary tauopathies are a group of neurodegenerative diseases affecting movement and cognition. In this thesis I study Progressive Supranuclear Palsy (PSP) and the Corticobasal Syndrome (CBS), two parkinsonian disorders associated with accumulation of hyperphos- phorylated and abnormally folded tau protein. I contrast these two disorders with Parkinson’s disease (PD), which is associated with the accumulation of alpha-synuclein but has a genetic association with the MAPT gene encoding tau. Understanding the tauopathies to develop effective treatments will require a better grasp of the relationships between clinical syndromes and cognitive measures and how the anatomical and neurochemical networks that underlie clinical features might be altered by disease. I investigate simple clinical biomarkers, showing that a two-minute test of verbal fluency is a potential diagnostic biomarker to distinguish between PD and PSP and that the ACE-R and its subscores could play a role in monitoring cognition over time in PD, PSP and CBS. I assess the implementation of network analysis in Functional Mag- netic Resonance Imaging (fMRI) data, introduce Maybrain software for graphical network analysis and visualisation. I go on to show an overlap between graph theory network measures and I identify three main factors underlying graph network measures of: efficiency and distance, hub characteristics, network community measures. I apply these measures in PD, PSP and the CBS. All three diseases caused a loss of functional connectivity in com- parison to the control group that was concentrated in more highly connected brain regions and in longer distance connections. In ad- dition, widely localised cognitive function of verbal fluency co-varied with the connection strength in highly connected regions across PD, PSP and CBS. To take this further, I investigated specific functional covariance networks. All three disease groups showed reduced connectivity between the basal ganglia network and other networks, and between the anterior salience network and other networks. Localised areas of increased co- variance suggest a breakdown of network boundaries which correlated with motor severity in PSP and CBS, and duration of disease in CBS. I explore the link between gene expression of the tau gene MAPT and its effects on functional connectivity showing that the expression of MAPT correlated with connection strength in highly connected hub regions that were more susceptible to a loss of connection strength in PD and PSP. I conclude by discussing how tau protein aggregates and soluble tau oligomers may explain the changes in functional brain networks.
117

Genre and Influence: Tracing the Lineage of Timbre and Form in Steven Wilson's Progressive Rock

Blakeley, Ryan January 2017 (has links)
This thesis examines the music of contemporary British progressive rock artist Steven Wilson and explores the ways in which specific musical influences have informed and shaped his work. Wilson’s solo output is extremely eclectic and draws from a plethora of diverse genres including progressive rock, electronica, metal, drone, pop, jazz, and industrial. Although it would be impossible to trace all of the influences involved in Wilson’s unique musical idiolect, I study the influence of three seminal tracks upon his work: progressive rock band King Crimson’s “The Court of the Crimson King” (1969), electronica duo Boards of Canada’s “An Eagle in Your Mind” (1998), and progressive death metal group Opeth’s “Blackwater Park” (2001). I demonstrate how Wilson’s recordings share timbral and formal features with these earlier works and consider the analytic implications through the lens of genre theory. The findings are then synthesized through a focused analysis of Wilson’s “Ancestral” (2015) in order to explore genre fusion and demonstrate how these salient musical features are integrated within a single song. This project ultimately seeks to situate Wilson within the progressive rock tradition, consider the role of timbre and form in popular music genres, and investigate the complex relationship between genre and influence.
118

Strain-specific profiling of Amyloid-β in Alzheimer´s disease: functional and clinical signature

Noor, Aneeqa 27 May 2021 (has links)
No description available.
119

Thalamic Morphology in Non-Semantic Primary Progressive Aphasia

Paxton, Holly Rochelle 01 June 2019 (has links)
Background: Primary progressive aphasia (PPA) is a clinical dementia syndrome characterized by impairments in language. The presence of Alzheimer disease (AD) neuropathology has been observed in approximately 40% of PPA cases. Cross-sectional and longitudinal features of cortical atrophy in PPA are emerging but less is known about the integrity of subcortical structures, particularly the thalamus. As a major relay station in the brain, the thalamus is implicated in language functioning given its reciprocal connections with perisylvian regions in the cortex. High-dimensional brain mapping was used to characterize thalamic morphology in individuals with and without non-semantic PPA. Further, shape differences were compared between PPA participants with suspected AD pathology (PPAAβ +) and those without suspected AD pathology (PPAAβ -) as determined by amyloid PET scans. The relationship between shape and specific language deficits were also investigated. Method: Thalamic integrity was examined in 57 PPA participants relative to cognitively healthy controls (N=44) with similar demographics. MR scans were acquired using high-resolution T1-weighted MPRAGE volumes following the ADNI protocol. Thalamic shape features were estimated using Large Deformation Diffeomorphic Metric Mapping. Thalamic nuclei of interest included mediodorsal, pulvinar, and anterior regions. General linear models compared differences in thalamic shape between groups. Pearson models characterized relationships between thalamic nuclei and language function. Results: After controlling for whole brain volume, thalamic volume did not differ between groups [F(1, 99)=0.80, p=0.80]. However, PPA participants exhibited significant bilateral inward shape deformation in dorsal and ventral regions that extended in an anterior to posterior fashion, and unilateral outward deformation in medial and lateral regions only in the left thalamus relative to controls [F(9, 91)=5.75, p<0.001, Wilk's Λ=0.64]. There were no shape differences between PPAAβ + and PPAAβ – groups. Pearson models revealed significant correlations between confrontation naming and shape deformation in the left pulvinar (r=0.59, p<0.01) and left anterior (r=0.55, p<0.01) thalamic nuclei for the PPAAβ + group only, such that lower language scores reflected greater localized volume loss. Conclusions: In the absence of volumetric differences, shape measures were able to capture unique aspects of localized morphologic differences in PPA that corresponded to worse naming performance only in those with suspected AD pathology. Thalamic changes appear to be a contributing and unrecognized component to the presentation and language characterization of PPA.
120

Modeling Progressive Collapse of Steel Composite Structures Using Commercial Software

Phillips, Trent J. 05 October 2021 (has links)
No description available.

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