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1.
Kauffmann, Louise.
Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles : The neural bases of spatial frequency processing during visual scene categorization.
Degree: Docteur es, Sciences cognitives, psychologie et neurocognition, 2015, Université Grenoble Alpes (ComUE)
URL: http://www.theses.fr/2015GREAS047 
► L'analyse visuelle de scènes débute par l'extraction en parallèle de l'information à différentes fréquences spatiales, en suivant un mode de traitement par défaut « coarse-to-fine…
(more)
▼ L'analyse visuelle de scènes débute par l'extraction en parallèle de l'information à différentes fréquences spatiales, en suivant un mode de traitement par défaut « coarse-to-fine ». L'analyse rapide de l'information grossière (« coarse ») en basses fréquences spatiales fournirait un aperçu global de la scène, qui serait ensuite affiné par l'analyse des détails de la scène (« fine ») en hautes fréquences spatiales. L'objectif de cette thèse a été de préciser les bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes. A travers deux études comportementales, nous avons tout d'abord montré qu'une analyse « coarse-to-fine » est plus avantageuse pour la catégorisation rapide de scènes, et ce, indépendamment de la valeur de contraste de luminance associée aux différentes fréquences spatiales (Expériences 1 et 2). Des études en IRMf nous ont par la suite permis de mettre en évidence l'implication d'un large réseau cérébral lors de l'analyse « coarse-to-fine » des scènes, incluant les aires visuelles primaires et occipito-temporales, mais également le cortex frontal inférieur (Expérience 3). Une analyse de la connectivité a révélé que lors de cette analyse, le cortex frontal inférieur exercerait une influence « top-down » sur le cortex visuel primaire et les gyri fusiforme et parahippocampique au sein du cortex occipito-temporal. Ces résultats soulignent le rôle du cortex visuel primaire comme région intégrative, codant à la fois les afférences rétino-thalamiques et les influences « top-down » de régions supérieures. Nous avons également observé que le gyrus frontal inférieur et le gyrus fusiforme participaient activement à l'intégration de l'information sémantique contenue dans les basses et hautes fréquences spatiales d'une scène (Expérience 4). Enfin, nous avons spécifiquement étudié le traitement des fréquences spatiales au sein de régions occipito-temporales sélectives aux scènes : la « parahippocampal place area » (PPA), le cortex retrosplenial et l'« occipital place area ». Nous avons montré que ces trois régions participent de façon distincte au traitement des fréquences spatiales dans les scènes (Expérience 5) et qu'une stratégie d'analyse « coarse-to-fine » serait privilégiée par la PPA (Expérience 6). Les résultats de ces travaux nous permettent de conforter et de préciser les modèles actuels de la catégorisation visuelle de scènes basés sur un traitement fréquentiel de l'information visuelle.
Visual analysis begins with the parallel extraction of different attributes at different spatial frequencies following a predominantly coarse-to-fine default processing sequence. Rapid processing of low spatial frequency information would permit a coarse parsing of the visual input, prior to the detailed analysis of fine information in high spatial frequencies. Our aim was to further address the neural bases of spatial frequency processing during scene categorization. We first demonstrated in two behavioral studies that a coarse-to-fine processing is indeed an advantageous strategy for…
Advisors/Committee Members: Peyrin, Carole (thesis director), Chauvin, Alan (thesis director).
Subjects/Keywords: Scènes naturelles; Fréquences spatiales; Coarse-To-Fine; IRMf; Natural scenes; Spatial frequencies; Coarse-To-Fine; Fmri; 150
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APA (6th Edition):
Kauffmann, L. (2015). Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles : The neural bases of spatial frequency processing during visual scene categorization. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2015GREAS047
Chicago Manual of Style (16th Edition):
Kauffmann, Louise. “Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles : The neural bases of spatial frequency processing during visual scene categorization.” 2015. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed April 18, 2021.
http://www.theses.fr/2015GREAS047.
MLA Handbook (7th Edition):
Kauffmann, Louise. “Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles : The neural bases of spatial frequency processing during visual scene categorization.” 2015. Web. 18 Apr 2021.
Vancouver:
Kauffmann L. Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles : The neural bases of spatial frequency processing during visual scene categorization. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2015. [cited 2021 Apr 18].
Available from: http://www.theses.fr/2015GREAS047.
Council of Science Editors:
Kauffmann L. Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles : The neural bases of spatial frequency processing during visual scene categorization. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2015. Available from: http://www.theses.fr/2015GREAS047
2.
Rui de Moraes Júnior.
Lateralidade e curso temporal do processamento de frequências espaciais na codificação de faces.
Degree: 2016, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/59/59134/tde-11022016-103811/
► O sinal de entrada na retina é decomposto em termos de frequência espacial (FE), variações periódicas de luminância ao longo do espaço. Existe vasta literatura…
(more)
▼ O sinal de entrada na retina é decomposto em termos de frequência espacial (FE), variações periódicas de luminância ao longo do espaço. Existe vasta literatura sobre o processamento de FE no córtex visual primário. No entanto, não se sabe ao certo como esta informação sensorial básica é processada e integrada numa visão de alto nível. Esta tese aborda este tema ao investigar lateralidade cerebral, tempo de processamento e contexto cognitivo em três diferentes seções com objetivos específicos. Estas seções investigaram comportamentalmente visão de alto nível tendo a face humana como estímulo, dado sua relevância biológica e social. Na primeira seção (Theoretical Review), uma revisão apresenta estudos clínicos e neuropsicológicos que mostram áreas cerebrais envolvidas na percepção de faces e como os hemisférios esquerdo e direito realizam um processamento holístico e analítico baseado em informações de FEs. A especialização hemisférica de FE no
reconhecimento de faces é então revisada e discutida. Concluiu-se que assimetrias sensoriais podem ser a base para assimetrias cognitivas de alta ordem. Ademais, foi destacado a influência do tempo de processamento. Na segunda seção (Study 1), foi investigado por método psicofísico a lateralidade de baixas e altas FEs no reconhecimento de faces em diferentes tempos de exposição. Faces com filtragem de FE foram apresentadas em campo visual dividido em alta e baixa restrição temporal em duas tarefas: reconhecimento facial (Experimento 1) e reconhecimento do sexo facial (Experimento 2). No Experimento 1, informações faciais de baixas e altas FEs foram mais eficientemente processadas no hemisfério direito e esquerdo, respectivamente, sem efeito do tempo de exposição das faces. Os resultados do Experimento 2 mostraram uma assimetria do hemisfério direito para baixas FEs em baixa restrição temporal. Conclui-se que o processamento de altas e baixas FEs é lateralizado nos hemisférios
cerebrais no reconhecimento de faces. No entanto, a contribuição de altas e baixas FEs é dependente da tarefa e do tempo de exposição. Na terceira seção (Study 2) foi investigado qual estratégia temporal,
coarse-to-
fine (de baixas para altas FEs) ou
fine-to-
coarse, cada hemisfério cerebral utiliza para integrar informação de FE de faces humanas numa tarefa de categorização facial homem-mulher. Sequências dinâmicas breves
coarse-to-
fine e
fine-to-
coarse de faces foram apresentadas no campo visual esquerdo, direito e central. Os resultados do tempo de resposta e do score de eficiência invertida mostraram uma prevalência geral de um processamento
coarse-to-
fine, independente do campo visual de apresentação. Ainda, os dados da taxa de erro ressaltam o processamento
coarse-to-
fine realizado pelo hemisfério direito. No geral, esta tese fornece insights sobre assimetria cerebral funcional, integração de alto nível e curso temporal do processamento de FEs, principalmente para aqueles
interessados na percepção de faces. Também foi mostrado que operações lateralizadas, tarefa-dependente e
coarse-to-
fine podem…
Advisors/Committee Members: Sergio Sheiji Fukusima, Nelson Torro Alves, Paulo Sérgio Boggio, Cesar Alexis Galera, Jose Aparecido Da Silva.
Subjects/Keywords: Coarse-to-fine; Face perception; Hemispheric specialization; Spatial frequency
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APA ·
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APA (6th Edition):
Júnior, R. d. M. (2016). Lateralidade e curso temporal do processamento de frequências espaciais na codificação de faces. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/59/59134/tde-11022016-103811/
Chicago Manual of Style (16th Edition):
Júnior, Rui de Moraes. “Lateralidade e curso temporal do processamento de frequências espaciais na codificação de faces.” 2016. Doctoral Dissertation, University of São Paulo. Accessed April 18, 2021.
http://www.teses.usp.br/teses/disponiveis/59/59134/tde-11022016-103811/.
MLA Handbook (7th Edition):
Júnior, Rui de Moraes. “Lateralidade e curso temporal do processamento de frequências espaciais na codificação de faces.” 2016. Web. 18 Apr 2021.
Vancouver:
Júnior RdM. Lateralidade e curso temporal do processamento de frequências espaciais na codificação de faces. [Internet] [Doctoral dissertation]. University of São Paulo; 2016. [cited 2021 Apr 18].
Available from: http://www.teses.usp.br/teses/disponiveis/59/59134/tde-11022016-103811/.
Council of Science Editors:
Júnior RdM. Lateralidade e curso temporal do processamento de frequências espaciais na codificação de faces. [Doctoral Dissertation]. University of São Paulo; 2016. Available from: http://www.teses.usp.br/teses/disponiveis/59/59134/tde-11022016-103811/
Delft University of Technology
3.
Lelekas, Ioannis (author).
Top-Down Networks: A coarse-to-fine reimagination of CNNs.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:11888a7b-1e54-424d-9daa-8ff48de58345
► Biological vision adopts a coarse-to-fine information processing pathway, from initial visual detection and binding of salient features of a visual scene, to the enhanced and…
(more)
▼ Biological vision adopts a
coarse-to-
fine information processing pathway, from initial visual detection and binding of salient features of a visual scene, to the enhanced and preferential processing given relevant stimuli. On the contrary, CNNs employ a
fine-to-
coarse processing, moving from local, edge-detecting filters to more global ones extracting abstract representations of the input. In the current paper we propose the extraction of top-down networks, by reversing the feature extraction part of the baseline, bottom-up architecture. This
coarse-to-
fine pathway, by blurring out higher frequency information and restoring it only at later stages, offers a line of defence against attacks introducing high frequency noise. High resolution of the final convolutional layer's feature map can contribute to the transparency of the network's decision making process, as well as favor more object-driven decisions over context driven ones and thus provide better localized class activation maps. The paper offers empirical evidence for the applicability of the method to various existing
architectures, but also on multiple visual recognition tasks.
Advisors/Committee Members: van Gemert, Jan (mentor), Reinders, Marcel (graduation committee), Vos, Frans (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Computer Vision; Deep Learning; Convolutional Neural Networks; Top-Down; Fine-to-Coarse; Coarse-to-Fine; Adversarial attacks; Adversarial robustness; Gradcam; Object localization
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APA (6th Edition):
Lelekas, I. (. (2020). Top-Down Networks: A coarse-to-fine reimagination of CNNs. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:11888a7b-1e54-424d-9daa-8ff48de58345
Chicago Manual of Style (16th Edition):
Lelekas, Ioannis (author). “Top-Down Networks: A coarse-to-fine reimagination of CNNs.” 2020. Masters Thesis, Delft University of Technology. Accessed April 18, 2021.
http://resolver.tudelft.nl/uuid:11888a7b-1e54-424d-9daa-8ff48de58345.
MLA Handbook (7th Edition):
Lelekas, Ioannis (author). “Top-Down Networks: A coarse-to-fine reimagination of CNNs.” 2020. Web. 18 Apr 2021.
Vancouver:
Lelekas I(. Top-Down Networks: A coarse-to-fine reimagination of CNNs. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Apr 18].
Available from: http://resolver.tudelft.nl/uuid:11888a7b-1e54-424d-9daa-8ff48de58345.
Council of Science Editors:
Lelekas I(. Top-Down Networks: A coarse-to-fine reimagination of CNNs. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:11888a7b-1e54-424d-9daa-8ff48de58345
University of Wolverhampton
4.
Aziz, Wilker Ferreira.
Exact sampling and optimisation in statistical machine translation.
Degree: PhD, 2014, University of Wolverhampton
URL: http://hdl.handle.net/2436/314591
► In Statistical Machine Translation (SMT), inference needs to be performed over a high-complexity discrete distribution de ned by the intersection between a translation hypergraph and…
(more)
▼ In Statistical Machine Translation (SMT), inference needs to be performed over a high-complexity discrete distribution de ned by the intersection between a translation hypergraph and a target language model. This distribution is too complex to be represented exactly and one typically resorts to approximation techniques either to perform optimisation { the task of searching for the optimum translation { or sampling { the task of nding a subset of translations that is statistically representative of the goal distribution. Beam-search is an example of an approximate optimisation technique, where maximisation is performed over a heuristically pruned representation of the goal distribution. For inference tasks other than optimisation, rather than nding a single optimum, one is really interested in obtaining a set of probabilistic samples from the distribution. This is the case in training where one wishes to obtain unbiased estimates of expectations in order to t the parameters of a model. Samples are also necessary in consensus decoding where one chooses from a sample of likely translations the one that minimises a loss function. Due to the additional computational challenges posed by sampling, n-best lists, a by-product of optimisation, are typically used as a biased approximation to true probabilistic samples. A more direct procedure is to attempt to directly draw samples from the underlying distribution rather than rely on n-best list approximations. Markov Chain Monte Carlo (MCMC) methods, such as Gibbs sampling, o er a way to overcome the tractability issues in sampling, however their convergence properties are hard to assess. That is, it is di cult to know when, if ever, an MCMC sampler is producing samples that are compatible iii with the goal distribution. Rejection sampling, a Monte Carlo (MC) method, is more fundamental and natural, it o ers strong guarantees, such as unbiased samples, but is typically hard to design for distributions of the kind addressed in SMT, rendering an intractable method. A recent technique that stresses a uni ed view between the two types of inference tasks discussed here | optimisation and sampling | is the OS approach. OS can be seen as a cross between Adaptive Rejection Sampling (an MC method) and A optimisation. In this view the intractable goal distribution is upperbounded by a simpler (thus tractable) proxy distribution, which is then incrementally re ned to be closer to the goal until the maximum is found, or until the sampling performance exceeds a certain level. This thesis introduces an approach to exact optimisation and exact sampling in SMT by addressing the tractability issues associated with the intersection between the translation hypergraph and the language model. The two forms of inference are handled in a uni ed framework based on the OS approach. In short, an intractable goal distribution, over which one wishes to perform inference, is upperbounded by tractable proposal distributions. A proposal represents a relaxed version of the complete space of weighted…
Subjects/Keywords: 418.020285635; statistical machine translation; exact inference; optimisation; sampling; coarse-to-fine search; decoding
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APA (6th Edition):
Aziz, W. F. (2014). Exact sampling and optimisation in statistical machine translation. (Doctoral Dissertation). University of Wolverhampton. Retrieved from http://hdl.handle.net/2436/314591
Chicago Manual of Style (16th Edition):
Aziz, Wilker Ferreira. “Exact sampling and optimisation in statistical machine translation.” 2014. Doctoral Dissertation, University of Wolverhampton. Accessed April 18, 2021.
http://hdl.handle.net/2436/314591.
MLA Handbook (7th Edition):
Aziz, Wilker Ferreira. “Exact sampling and optimisation in statistical machine translation.” 2014. Web. 18 Apr 2021.
Vancouver:
Aziz WF. Exact sampling and optimisation in statistical machine translation. [Internet] [Doctoral dissertation]. University of Wolverhampton; 2014. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/2436/314591.
Council of Science Editors:
Aziz WF. Exact sampling and optimisation in statistical machine translation. [Doctoral Dissertation]. University of Wolverhampton; 2014. Available from: http://hdl.handle.net/2436/314591
University of North Texas
5.
Balavendran Joseph, Rani Deepika.
Gamification to Solve a Mapping Problem in Electrical Engineering.
Degree: 2020, University of North Texas
URL: https://digital.library.unt.edu/ark:/67531/metadc1703330/
► Coarse-Grained Reconfigurable Architectures (CGRAs) are promising in developing high performance low-power portable applications. In this research, we crowdsource a mapping problem using gamification to harnass…
(more)
▼ Coarse-Grained Reconfigurable
Architectures (CGRAs) are promising in developing high performance low-power portable applications. In this research, we crowdsource a mapping problem using gamification to harnass human intelligence. A scientific puzzle game, Untangled, was developed to solve a mapping problem by encapsulating architectural characteristics. The primary motive of this research is to draw insights from the mapping solutions of players who possess innate abilities like decision-making, creative problem-solving, recognizing patterns, and learning from experience. In this dissertation, an extensive analysis was conducted to investigate how players' computational skills help to solve an open-ended problem with different constraints. From this analysis, we discovered a few common strategies among players, and subsequently, a library of dictionaries containing identified patterns from players' solutions was developed. The findings help to propose a better version of the game that incorporates these techniques recognized from the experience of players. In the future, an updated version of the game that can be developed may help low-performance players to provide better solutions for a mapping problem. Eventually, these solutions may help to develop efficient mapping algorithms, In addition, this research can be an exemplar for future researchers who want to crowdsource such electrical engineering problems and this approach can also be applied to other domains.
Advisors/Committee Members: Mehta, Gayatri, Varanasi, Murali, Li, Xinrong, Nielsen, Rodney, Sprang, Ralph.
Subjects/Keywords: Coarse-Grained Reconfigurable Architectures; Mapping; Gamification; and Crowdsourcing
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University of Alberta
6.
Rahman, Md. Hafizur.
Yield stresses of mixtures with bimodal size
distributions.
Degree: MS, Department of Chemical and Materials
Engineering, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/2227mr37p
► The addition of coarse particles to a flocculating fine particle slurry increases the Bingham yield stress of the resulting mixture, which can drastically alter the…
(more)
▼ The addition of coarse particles to a flocculating
fine particle slurry increases the Bingham yield stress of the
resulting mixture, which can drastically alter the
laminar-to-turbulent transition velocity. The objective of this
study is to quantify the effect of coarse particle size and volume
concentration on mixture rheology. Fine particle (kaolin) mixtures
of 10% to 22% (by volume) were prepared, to which sand particles
were added to provide a coarse solid concentration of 5% to 20% (by
volume). Sand particles of two different sizes – 90 and 190 microns
– were added and these kaolin-sand-water mixtures tested with a
concentric cylinder viscometer. At higher total solids
concentrations, the Bingham yield stress of the bimodal mixture can
increase by as much as 80% over that of a kaolin-only slurry.
Coarse particle diameter had little effect. This study demonstrates
that the use of existing correlations should be eschewed.
System-specific high-quality measurements are
necessary.
Subjects/Keywords: Fine particle slurry; Coarse particle concentration; Coarse particle size; Yield stress; Viscometer
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rahman, M. H. (2011). Yield stresses of mixtures with bimodal size
distributions. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/2227mr37p
Chicago Manual of Style (16th Edition):
Rahman, Md Hafizur. “Yield stresses of mixtures with bimodal size
distributions.” 2011. Masters Thesis, University of Alberta. Accessed April 18, 2021.
https://era.library.ualberta.ca/files/2227mr37p.
MLA Handbook (7th Edition):
Rahman, Md Hafizur. “Yield stresses of mixtures with bimodal size
distributions.” 2011. Web. 18 Apr 2021.
Vancouver:
Rahman MH. Yield stresses of mixtures with bimodal size
distributions. [Internet] [Masters thesis]. University of Alberta; 2011. [cited 2021 Apr 18].
Available from: https://era.library.ualberta.ca/files/2227mr37p.
Council of Science Editors:
Rahman MH. Yield stresses of mixtures with bimodal size
distributions. [Masters Thesis]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/2227mr37p
University of Toronto
7.
Walker, Matthew James Peter.
Connectivity-based Mapping for Diverse Coarse-grained Reconfigurable Architectures.
Degree: 2019, University of Toronto
URL: http://hdl.handle.net/1807/98430
► Coarse-Grained Reconfigurable Architectures (CGRAs) are programmable logic devices with large coarse-grained Arithmetic Logic Unit-like logic blocks, and multi-bit datapath-style routing. CGRAs often have relatively restricted…
(more)
▼ Coarse-Grained Reconfigurable Architectures (CGRAs) are programmable logic devices with large coarse-grained Arithmetic Logic Unit-like logic blocks, and multi-bit datapath-style routing. CGRAs often have relatively restricted data routing networks, so they attract CAD mapping tools that use exact methods, such as Integer Linear Programs (ILPs). However, tools that target general architectures must use large constraint systems to fully describe an architecture’s flexibility, resulting in lengthy run-times. In this thesis, we present a method to derive connectivity information from an otherwise generic device model, and use this to create simpler ILPs, which we combine in an iterative schedule and retain most of the exactness of a fully-generic ILP approach and significantly improve runtime. We then extend this approach to architectures that have arbitrary latency characteristics. The proposed mapping techniques are integrated into, and evaluated using the open-source CGRA Modelling and Exploration (CGRA-ME) framework [1].
M.A.S.
Advisors/Committee Members: Anderson, Jason H, Electrical and Computer Engineering.
Subjects/Keywords: Coarse Grained Reconfigurable Architectures; Coarse Grained Reconfigurable Arrays; Computer Aided Design; Connectivity; Integer Linear Programming; 0464
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APA ·
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APA (6th Edition):
Walker, M. J. P. (2019). Connectivity-based Mapping for Diverse Coarse-grained Reconfigurable Architectures. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/98430
Chicago Manual of Style (16th Edition):
Walker, Matthew James Peter. “Connectivity-based Mapping for Diverse Coarse-grained Reconfigurable Architectures.” 2019. Masters Thesis, University of Toronto. Accessed April 18, 2021.
http://hdl.handle.net/1807/98430.
MLA Handbook (7th Edition):
Walker, Matthew James Peter. “Connectivity-based Mapping for Diverse Coarse-grained Reconfigurable Architectures.” 2019. Web. 18 Apr 2021.
Vancouver:
Walker MJP. Connectivity-based Mapping for Diverse Coarse-grained Reconfigurable Architectures. [Internet] [Masters thesis]. University of Toronto; 2019. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1807/98430.
Council of Science Editors:
Walker MJP. Connectivity-based Mapping for Diverse Coarse-grained Reconfigurable Architectures. [Masters Thesis]. University of Toronto; 2019. Available from: http://hdl.handle.net/1807/98430
Indian Institute of Science
8.
Varadarajan, Keshavan.
A Coarse Grained Reconfigurable Architecture Framework Supporting Macro-Dataflow Execution.
Degree: PhD, Faculty of Engineering, 2014, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/2302
► A Coarse-Grained Reconfigurable Architecture (CGRA) is a processing platform which constitutes an interconnection of coarse-grained computation units (viz. Function Units (FUs), Arithmetic Logic Units (ALUs)).…
(more)
▼ A
Coarse-Grained Reconfigurable Architecture (CGRA) is a processing platform which constitutes an interconnection of
coarse-grained computation units (viz. Function Units (FUs), Arithmetic Logic Units (ALUs)). These units communicate directly, viz. send-receive like primitives, as opposed to the shared memory based communication used in multi-core processors. CGRAs are a well-researched topic and the design space of a CGRA is quite large. The design space can be represented as a 7-tuple (C, N, T, P, O, M, H) where each of the terms have the following meaning: C -choice of computation unit, N -choice of interconnection network, T -Choice of number of context frame (single or multiple), P -presence of partial reconfiguration, O choice of orchestration mechanism, M -design of memory hierarchy and H host-CGRA coupling. In this thesis, we develop an architectural framework for a Macro-Dataflow based CGRA where we make the following choice for each of these parameters: C -ALU, N -Network-on-Chip (NoC), T -Multiple contexts, P -support for partial reconfiguration, O -Macro Dataflow based orchestration, M -data memory banks placed at the periphery of the reconfigurable fabric (reconfigurable fabric is the name given to the interconnection of computation units), H -loose coupling between host processor and CGRA, enabling our CGRA to execute an application independent of the host-processor’s intervention. The motivations for developing such a CGRA are:
To execute applications efficiently through reduction in reconfiguration time (i.e. the time needed to transfer instructions and data to the reconfigurable fabric) and reduction in execution time through better exploitation of all forms of parallelism: Instruction Level Parallelism (ILP), Data Level Parallelism (DLP) and Thread/Task Level Parallelism (TLP). We choose a macro-dataflow based orchestration framework in combination with partial reconfiguration so as to ease exploitation of TLP and DLP. Macro-dataflow serves as a light weight synchronization mechanism. We experiment with two variants of the macro-dataflow orchestration units, namely: hardware controlled orchestration unit and the compiler controlled orchestration unit. We employ a NoC as it helps reduce the reconfiguration overhead.
To permit customization of the CGRA for a particular domain through the use of domain-specific custom-Intellectual Property (IP) blocks. This aids in improving both application performance and makes it energy efficient.
To develop a CGRA which is completely programmable and accepts any program written using the C89 standard. The compiler and the architecture were co-developed to ensure that every feature of the architecture could be automatically programmed through an application by a compiler.
In this CGRA framework, the orchestration mechanism (O) and the host-CGRA coupling (H) are kept fixed and we permit design space exploration of the other terms in the 7-tuple design space. The mode of compilation and execution remains invariant of these changes, hence referred to as a…
Advisors/Committee Members: Nandy, S K (advisor).
Subjects/Keywords: Coarse Grained Computation; Reconfigurable Architectures; Macro Dataflow Execution; Coarse Grained Reconfigurable Architecture; Macro-Dataflow Orchestration; Microarchitectural Optimizations; Reconfigurable Fabric; Coarse-Grained Reconfigurable Architecture (CGRA); Macro Dataflow Execution; Computer Science
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APA (6th Edition):
Varadarajan, K. (2014). A Coarse Grained Reconfigurable Architecture Framework Supporting Macro-Dataflow Execution. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2302
Chicago Manual of Style (16th Edition):
Varadarajan, Keshavan. “A Coarse Grained Reconfigurable Architecture Framework Supporting Macro-Dataflow Execution.” 2014. Doctoral Dissertation, Indian Institute of Science. Accessed April 18, 2021.
http://etd.iisc.ac.in/handle/2005/2302.
MLA Handbook (7th Edition):
Varadarajan, Keshavan. “A Coarse Grained Reconfigurable Architecture Framework Supporting Macro-Dataflow Execution.” 2014. Web. 18 Apr 2021.
Vancouver:
Varadarajan K. A Coarse Grained Reconfigurable Architecture Framework Supporting Macro-Dataflow Execution. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2014. [cited 2021 Apr 18].
Available from: http://etd.iisc.ac.in/handle/2005/2302.
Council of Science Editors:
Varadarajan K. A Coarse Grained Reconfigurable Architecture Framework Supporting Macro-Dataflow Execution. [Doctoral Dissertation]. Indian Institute of Science; 2014. Available from: http://etd.iisc.ac.in/handle/2005/2302
Addis Ababa University
9.
Denamo, Addissie.
HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
.
Degree: 2008, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/4277
► ABSTRACT Construction materials management is an important element in the management of construction projects. One of the construction materials widely used in construction projects is…
(more)
▼ ABSTRACT
Construction materials management is an important element in the management of
construction projects. One of the construction materials widely used in construction projects is
concrete. Concrete being one of the important constituents of many of the construction
projects, in addition to its subjectivity to variability, requires a close and thorough care and
handling in construction projects. The constituents of concrete, which majority of them occur
naturally, are subjected to a wide range of variability and quality problems. Therefore, with
this respect a research was carried out to assess the situation of handling of concrete making
materials in the Ethiopian construction industry with a special emphasis given to the concrete
making aggregates. The objective of the research was to assess the current situation of the
handling of concrete making materials in the Ethiopian construction industry in general and to
give recommendation inline with the outcome of the results of the research. There fore, in the
research test results of
fine aggregate,
coarse aggregate and rock samples were collected and
analyzed. According to the result, 44%of the
coarse aggregate samples considered and 77% of
the
fine aggregate samples considered couldn’t satisfy requirements set by different standards.
In addition, it has been found out that more than about 60% of the tests that the samples failed
to satisfy don’t attribute to the natural quality of the materials. Further, researches carried out
in different parts of Ethiopia had also shown that the naturally available material have quite
acceptable quality to be used as a concrete making material. The research also indicates that
the reason why concrete making materials fail to comply with requirements attributes to the
handling of the materials in the construction industry but not to the unavailability of materials
satisfying requirements in Ethiopia. Further, from the observations made in construction sites
and aggregate production plants in addition to the interviews made with relevant personnel, it
was concluded in the research that the aggregate production in Ethiopia is not up to the
standard with respect to quality, quantity and production process. Another conclusion drawn
from the research was that the aggregate production process and handling of concrete making
materials in the Ethiopian construction industry should be upgraded in all aspects including
expert training, utilization of improved production process and introduction of
standardization both for the quality of the materials and the production processes. Finally,
from observations made in Germany the study concluded that introduction of a ready-mixed
concrete production system to the Ethiopian construction industry could improve the current
situation with respect to better handling and production of good quality concrete.
Advisors/Committee Members: Abebe Dinku, Dr. –Ing (advisor).
Subjects/Keywords: concrete;
fine aggregate;
coarse aggregate;
cement;
handling;
quality;
production
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Denamo, A. (2008). HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/4277
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Denamo, Addissie. “HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
.” 2008. Thesis, Addis Ababa University. Accessed April 18, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/4277.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Denamo, Addissie. “HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
.” 2008. Web. 18 Apr 2021.
Vancouver:
Denamo A. HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
. [Internet] [Thesis]. Addis Ababa University; 2008. [cited 2021 Apr 18].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/4277.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Denamo A. HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
. [Thesis]. Addis Ababa University; 2008. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4277
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Addis Ababa University
10.
Denamo, Addissie.
HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
.
Degree: 2008, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/4288
► ABSTRACT Construction materials management is an important element in the management of construction projects. One of the construction materials widely used in construction projects is…
(more)
▼ ABSTRACT
Construction materials management is an important element in the management of
construction projects. One of the construction materials widely used in construction projects is
concrete. Concrete being one of the important constituents of many of the construction
projects, in addition to its subjectivity to variability, requires a close and thorough care and
handling in construction projects. The constituents of concrete, which majority of them occur
naturally, are subjected to a wide range of variability and quality problems. Therefore, with
this respect a research was carried out to assess the situation of handling of concrete making
materials in the Ethiopian construction industry with a special emphasis given to the concrete
making aggregates. The objective of the research was to assess the current situation of the
handling of concrete making materials in the Ethiopian construction industry in general and to
give recommendation inline with the outcome of the results of the research. There fore, in the
research test results of
fine aggregate,
coarse aggregate and rock samples were collected and
analyzed. According to the result, 44%of the
coarse aggregate samples considered and 77% of
the
fine aggregate samples considered couldn’t satisfy requirements set by different standards.
In addition, it has been found out that more than about 60% of the tests that the samples failed
to satisfy don’t attribute to the natural quality of the materials. Further, researches carried out
in different parts of Ethiopia had also shown that the naturally available material have quite
acceptable quality to be used as a concrete making material. The research also indicates that
the reason why concrete making materials fail to comply with requirements attributes to the
handling of the materials in the construction industry but not to the unavailability of materials
satisfying requirements in Ethiopia. Further, from the observations made in construction sites
and aggregate production plants in addition to the interviews made with relevant personnel, it
was concluded in the research that the aggregate production in Ethiopia is not up to the
standard with respect to quality, quantity and production process. Another conclusion drawn
from the research was that the aggregate production process and handling of concrete making
materials in the Ethiopian construction industry should be upgraded in all aspects including
expert training, utilization of improved production process and introduction of
standardization both for the quality of the materials and the production processes. Finally,
from observations made in Germany the study concluded that introduction of a ready-mixed
concrete production system to the Ethiopian construction industry could improve the current
situation with respect to better handling and production of good quality concrete.
Advisors/Committee Members: Abebe Dinku, Dr. –Ing (advisor).
Subjects/Keywords: concrete;
fine aggregate;
coarse aggregate;
cement;
handling;
quality;
production
Record Details
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Share »
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Denamo, A. (2008). HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/4288
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Denamo, Addissie. “HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
.” 2008. Thesis, Addis Ababa University. Accessed April 18, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/4288.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Denamo, Addissie. “HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
.” 2008. Web. 18 Apr 2021.
Vancouver:
Denamo A. HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
. [Internet] [Thesis]. Addis Ababa University; 2008. [cited 2021 Apr 18].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/4288.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Denamo A. HANDLING OF CONCRETE MAKING MATERIALS IN THE ETHIOPIAN CONSTRUCTION INDUSTRY
. [Thesis]. Addis Ababa University; 2008. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4288
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of South Florida
11.
Alshehri, Saad.
Binding of Nitrite in Concrete, Cement Mortar and Paste.
Degree: 2015, University of South Florida
URL: https://scholarcommons.usf.edu/etd/5899
► Calcium nitrite as a corrosion inhibitor is mainly used to protect steel reinforcement in concrete by reducing its corrosion rate. Hence the effectiveness of calcium…
(more)
▼ Calcium nitrite as a corrosion inhibitor is mainly used to protect steel reinforcement in concrete by reducing its corrosion rate. Hence the effectiveness of calcium nitrite depends on its availability as a free nitrite in the pore solution. The present research work aims to determine the concrete mixture component mostly responsible for nitrite binding in concrete. Firstly, the experimental program included testing of nitrite binding in cement paste. Secondly, the effect of adding the fine aggregate (mortar mix) on nitrite binding was assessed. Finally, the mix with coarse aggregate (concrete mix) was evaluated. In-situ leaching method was used to obtain the pore solution that was needed.
Measurement of pore solution with the In-situ leaching method and after an average of 48 days showed that concrete specimens have the most nitrite binding capacity. Then, the binding of nitrite was less in mortar and paste specimens respectively. Therefore, concrete specimens bind more nitrite compared to the paste and mortar specimens. The binding ratio increased whenever the nitrite addition level increased. Nevertheless, the free nitrite were similar in the case of the lowest nitrite addition for all types of mix. The pH levels for the mixes with nitrite present, were lower than those of the control mixes.
Subjects/Keywords: Free Nitrite; pH; Porosity; Coarse Aggregate; Fine Aggregate; Civil Engineering
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alshehri, S. (2015). Binding of Nitrite in Concrete, Cement Mortar and Paste. (Thesis). University of South Florida. Retrieved from https://scholarcommons.usf.edu/etd/5899
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Alshehri, Saad. “Binding of Nitrite in Concrete, Cement Mortar and Paste.” 2015. Thesis, University of South Florida. Accessed April 18, 2021.
https://scholarcommons.usf.edu/etd/5899.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Alshehri, Saad. “Binding of Nitrite in Concrete, Cement Mortar and Paste.” 2015. Web. 18 Apr 2021.
Vancouver:
Alshehri S. Binding of Nitrite in Concrete, Cement Mortar and Paste. [Internet] [Thesis]. University of South Florida; 2015. [cited 2021 Apr 18].
Available from: https://scholarcommons.usf.edu/etd/5899.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Alshehri S. Binding of Nitrite in Concrete, Cement Mortar and Paste. [Thesis]. University of South Florida; 2015. Available from: https://scholarcommons.usf.edu/etd/5899
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Arizona State University
12.
Tang, Miao.
Coarse-Fine VCO Design with a New Supply Noise Suppression
Method.
Degree: Electrical Engineering, 2018, Arizona State University
URL: http://repository.asu.edu/items/50439
► VCO as a ubiquitous circuit in many systems is highly demanding for the phase noises. Lowering the noise migrated from the power supply has been…
(more)
▼ VCO as a ubiquitous circuit in many systems is highly
demanding for the phase noises. Lowering the noise migrated from
the power supply has been the trending topics for many years.
Considering the Ring Oscillator(RO) based VCO is more sensitive to
the supply noise, it is more significant to find out a useful
technique to reduce the supply noise. Among the conventional supply
noise reduction techniques such as filtering, channel length
adjusting for the transistors, and the current noise mutual
canceling, the new feature of the 28nm UTBB-FD-SOI process launched
by the ST semiconductor offered a new method to reduce the noise,
which is realized by allowing the circuit designer to dynamically
control the threshold voltage. In this thesis, a new structure of
the linear coarse-fine VCO with 1V supply voltage is designed for
the ring typed VCO. The structure is also designed to be flexible
to tune the frequency coverage by the fine and coarse tunable
on-board resistors. The thesis has given the model of the phase
noise reduction method. The model has also been proved to be
meaningful with the newly designed VCO circuit. For instances,
given 1μV/√Hz white noise coupled on the supply, the 3GHz VCO can
have a more than 7dBc/Hz phase noise lowering at the 10MHz
frequency offset.
Subjects/Keywords: Electrical engineering; Coarse-Fine; Supply Noise Reduction; Voltage Controlled Oscillator
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Tang, M. (2018). Coarse-Fine VCO Design with a New Supply Noise Suppression
Method. (Masters Thesis). Arizona State University. Retrieved from http://repository.asu.edu/items/50439
Chicago Manual of Style (16th Edition):
Tang, Miao. “Coarse-Fine VCO Design with a New Supply Noise Suppression
Method.” 2018. Masters Thesis, Arizona State University. Accessed April 18, 2021.
http://repository.asu.edu/items/50439.
MLA Handbook (7th Edition):
Tang, Miao. “Coarse-Fine VCO Design with a New Supply Noise Suppression
Method.” 2018. Web. 18 Apr 2021.
Vancouver:
Tang M. Coarse-Fine VCO Design with a New Supply Noise Suppression
Method. [Internet] [Masters thesis]. Arizona State University; 2018. [cited 2021 Apr 18].
Available from: http://repository.asu.edu/items/50439.
Council of Science Editors:
Tang M. Coarse-Fine VCO Design with a New Supply Noise Suppression
Method. [Masters Thesis]. Arizona State University; 2018. Available from: http://repository.asu.edu/items/50439
Indian Institute of Science
13.
Alle, Mythri.
Compiling For Coarse-Grained Reconfigurable Architectures Based On Dataflow Execution Paradigm.
Degree: PhD, Faculty of Engineering, 2015, Indian Institute of Science
URL: http://etd.iisc.ac.in/handle/2005/2453
► Coarse-Grained Reconfigurable Architectures(CGRAs) can be employed for accelerating computational workloads that demand both flexibility and performance. CGRAs comprise a set of computation elements interconnected using…
(more)
▼ Coarse-Grained Reconfigurable
Architectures(CGRAs) can be employed for accelerating computational workloads that demand both flexibility and performance. CGRAs comprise a set of computation elements interconnected using a network and this interconnection of computation elements is referred to as a reconfigurable fabric. The size of application that can be accommodated on the reconfigurable fabric is limited by the size of instruction buffers associated with each Compute element. When an application cannot be accommodated entirely, application is partitioned such that each of these partitions can be executed on the reconfigurable fabric. These partitions are scheduled by an orchestrator. The orchestrator employs dynamic dataflow execution paradigm. Dynamic dataflow execution paradigm has inherent support for synchronization and helps in exploitation of parallelism that exists across application partitions. In this thesis, we present a compiler that targets such CGRAs.
The compiler presented in this thesis is capable of accepting applications specified in C89 standard. To enable architectural design space exploration, the compiler is designed such that it can be customized for several instances of CGRAs employing dataflow execution paradigm at the orchestrator. This can be achieved by specifying the appropriate configuration parameters to the compiler. The focus of this thesis is to provide efficient support for various kinds of parallelism while ensuring correctness. The compiler is designed to support
fine-grained task level parallelism that exists across iterations of loops and function calls. Additionally, compiler can also support pipeline parallelism, where a loop is split into multiple stages that execute in a pipelined manner.
The prototype compiler, which targets multiple instances of a CGRA, is demonstrated in this thesis. We used this compiler to target multiple variants of CGRAs employing dataflow execution paradigm. We varied the reconfigur-able fabric, orchestration mechanism employed, size of instruction buffers. We also choose applications from two different domains viz. cryptography and linear algebra. The execution time of the CGRA (the best among all instances) is compared against an Intel Quad core processor. Cryptography applications show a performance improvement ranging from more than one order of magnitude to close to two orders of magnitude. These applications have large amounts of ILP and our compiler could successfully expose the ILP available in these applications. Further, the domain customization also played an important role in achieving good performance. We employed two custom functional units for accelerating Cryptography applications and compiler could efficiently use them. In linear algebra kernels we observe multiple iterations of the loop executing in parallel, effectively exploiting loop-level parallelism at runtime. Inspite of this we notice close to an order of magnitude performance degradation. The reason for this degradation can be attributed to the use of non-pipelined…
Advisors/Committee Members: Nandy, S K (advisor).
Subjects/Keywords: Coarse-Grained Reconfigurable Architecture (CGRA); Reconfigurable Fabric; Dataflow Execution; Compilers (Computer Programs); Computer Architecture; Reconfigurable Architectures; Coarse-Grained Reconfigurable Architectures (CGRAs); Run Time Reconfigurable Platform; Runtime Reconfigurable Platform; Runtime Reconfigurable Hardware; Coarse Grained Computation; Computer Science
Record Details
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Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alle, M. (2015). Compiling For Coarse-Grained Reconfigurable Architectures Based On Dataflow Execution Paradigm. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2453
Chicago Manual of Style (16th Edition):
Alle, Mythri. “Compiling For Coarse-Grained Reconfigurable Architectures Based On Dataflow Execution Paradigm.” 2015. Doctoral Dissertation, Indian Institute of Science. Accessed April 18, 2021.
http://etd.iisc.ac.in/handle/2005/2453.
MLA Handbook (7th Edition):
Alle, Mythri. “Compiling For Coarse-Grained Reconfigurable Architectures Based On Dataflow Execution Paradigm.” 2015. Web. 18 Apr 2021.
Vancouver:
Alle M. Compiling For Coarse-Grained Reconfigurable Architectures Based On Dataflow Execution Paradigm. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2015. [cited 2021 Apr 18].
Available from: http://etd.iisc.ac.in/handle/2005/2453.
Council of Science Editors:
Alle M. Compiling For Coarse-Grained Reconfigurable Architectures Based On Dataflow Execution Paradigm. [Doctoral Dissertation]. Indian Institute of Science; 2015. Available from: http://etd.iisc.ac.in/handle/2005/2453
14.
Gubbels, R.
Text Detection using Coarse detection and SVM
Classification.
Degree: 2014, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/296615
► In this paper a new approach to detect text in natural images is described using different detection methods. The end result will be that the…
(more)
▼ In this paper a new approach to detect text in natural images is described using different detection methods. The end result will be that the text will be segmented from the image and can be used for different purposes. The approach is split up in two parts, a
coarse detection step to extract patches from the image and a
fine detection step that uses feature descriptors and a support vector machine in order to increase the precision of the
coarse detection step. The methods used for the
coarse detection are global threshold, mean threshold, Gaussian threshold, local binary pattern, maximum gradient difference filter and maximum difference filter. These methods are compared and the best results are used in combination with the
fine detection. The feature descriptors used in the
fine detection are Histogram of Oriented Gradients, Co-occurrence histogram of orientated gradients and local binary patterns. In order to increase the quality of the
coarse detection a projection step is used. The approach performs on precision level worse than the current state-of-the-art methods, but has a better recall rate than most methods.
Advisors/Committee Members: Veltkamp, R, Tan, R, Fu, Z.
Subjects/Keywords: Text detection; Histogram of Orientated Gradients; Coarse-to-fine schema; Support Vector Machines; thresholds
…complexity and
contrast levels. Also a coarse-to-fine detection schema is used in order to detect… …coarse-to-fine detection schema [4] can be used in order
to find decent results, very… …introduction a coarse-to-fine
pipeline is introduced. The reason for using a coarse-to-fine pipeline… …found in this approach.
The main contribution of this paper is a coarse-to-fine detection… …CoHoG feature descriptor can be used for different purposes. A strength of the
coarse-to-fine…
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gubbels, R. (2014). Text Detection using Coarse detection and SVM
Classification. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/296615
Chicago Manual of Style (16th Edition):
Gubbels, R. “Text Detection using Coarse detection and SVM
Classification.” 2014. Masters Thesis, Universiteit Utrecht. Accessed April 18, 2021.
http://dspace.library.uu.nl:8080/handle/1874/296615.
MLA Handbook (7th Edition):
Gubbels, R. “Text Detection using Coarse detection and SVM
Classification.” 2014. Web. 18 Apr 2021.
Vancouver:
Gubbels R. Text Detection using Coarse detection and SVM
Classification. [Internet] [Masters thesis]. Universiteit Utrecht; 2014. [cited 2021 Apr 18].
Available from: http://dspace.library.uu.nl:8080/handle/1874/296615.
Council of Science Editors:
Gubbels R. Text Detection using Coarse detection and SVM
Classification. [Masters Thesis]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/296615
15.
Mobahi, Hossein.
Optimization by Gaussian smoothing with application to geometric alignment.
Degree: PhD, 0112, 2013, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/42330
► It is well-known that global optimization of a nonconvex function, in general, is computationally intractable. Nevertheless, many objective functions that we need to optimize may…
(more)
▼ It is well-known that global optimization of a nonconvex function, in general, is computationally intractable. Nevertheless, many objective functions that we need to optimize may be nonconvex. In practice, when working with such a nonconvex function, a very natural heuristic is to employ a
coarse-to-
fine search for the global optimum. A popular deterministic procedure that exemplifies this idea can be summarized briefly as follows. Consider an unconstrained optimization task of minimizing some nonconvex function. One starts from a highly smoothed version of the objective function and hopes that the smoothing eliminates most spurious local minima. More ideally, one hopes that the highly smoothed function would be a convex function, whose global minimum can be found efficiently. Once the minimum of the smoothed function is found, one could gradually reduce the smoothing effect and follow the continuous path of the minimizer, eventually towards a minimum of the objective function. Empirically, people have observed that the minimum found this way has high chance to be the global minimum.
Despite its empirical success, there has been little theoretical understanding about the effect of smoothing on optimization. This work rigorously studies some of the fundamental properties of the smoothing technique. In particular, we present a formal definition for the functions that can eventually become convex by smoothing. We present extremely simple sufficient condition for asymptotic convexity as well as a very simple form for an asymptotic minimizer. Our sufficient conditions hold when the objective function satisfies certain decay conditions.
Our initial interest for studying this topic arise from its well-known use in geometric image alignment. The alignment problem can be formulated as an optimization task that minimizes the visual difference between the images by searching the space of transformations. Unfortunately, the cost function associated to this problem usually contains many local minima. Thus, unless very good initialization is provided, simple greedy optimization may lead to poor results.
To improve the attained solution for the alignment task, we propose smoothing the objective function of the alignment task. In particular, we derive the theoretically correct image blur kernels that arise from (Gaussian) smoothing an alignment objective function. We show that, for smoothing the objective of common motion models, such as affine and homography, there exists a corresponding integral operator on the image space. We refer to the kernels of such integral operators as transformation kernels. Thus, instead of convolving the objective function with a Gaussian kernel in transformation space, we can equivalently compute an integral transform in the image space, which is much cheaper to compute.
Advisors/Committee Members: Ma, Yi (advisor), Ma, Yi (Committee Chair), Huang, Thomas S. (committee member), Forsyth, David A. (committee member), Hoiem, Derek W. (committee member), Soatto, Stefano (committee member).
Subjects/Keywords: Nonconvex Optimization; Homotopy Continuation; Image Alignment; Point Cloud Alignment; Coarse-to-fine Optimization
…and Schrodinger (bottom) equations. Time progression is
from left to right… …k( . ; σ 2 )](x),
Left to Right: The function g(x; σ)… …due
to reflection symmetry. The objective function for zLK is
shown in (c) and for… …different view. (c) Segmentation result refined to the
orange box by matching. (d… …Optimization landscape for minimizing the function (5.19).
The spectrum from blue to red…
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APA (6th Edition):
Mobahi, H. (2013). Optimization by Gaussian smoothing with application to geometric alignment. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/42330
Chicago Manual of Style (16th Edition):
Mobahi, Hossein. “Optimization by Gaussian smoothing with application to geometric alignment.” 2013. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed April 18, 2021.
http://hdl.handle.net/2142/42330.
MLA Handbook (7th Edition):
Mobahi, Hossein. “Optimization by Gaussian smoothing with application to geometric alignment.” 2013. Web. 18 Apr 2021.
Vancouver:
Mobahi H. Optimization by Gaussian smoothing with application to geometric alignment. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2013. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/2142/42330.
Council of Science Editors:
Mobahi H. Optimization by Gaussian smoothing with application to geometric alignment. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2013. Available from: http://hdl.handle.net/2142/42330
Universidade Federal de Viçosa
16.
Marcos Vinicius da Silva.
Design space exploration for array reconfigurable architectures.
Degree: 2006, Universidade Federal de Viçosa
URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=745
► As aplicações atuais de processamento de sinais em sistemas embarcados demandam soluções de hardware com alto poder de de processamento e baixo consumo de energia.…
(more)
▼ As aplicações atuais de processamento de sinais em sistemas embarcados demandam soluções de hardware com alto poder de de processamento e baixo consumo de energia. Além disso, estas soluções devem ser escaláveis permitindo fácil adaptação para acompanhar os avanços tecnológicos na construção de circuitos integrados. As arquiteturas de arranjos reconfiguráveis de processadores de grão grosso permitem atender a esta demanda e atualmente são foco de pesquisas que propõem várias maneiras de se realizar sua implementação, com variação de características como topologia, elementos de processamento e capacidade de roteamento, dentre outras. Este trabalho apresenta um algoritmo de posicionamento de unidades funcionais em arranjos de processadores capaz de lidar com variações dessas características, permitindo avaliar a priori seu desempenho para várias arquiteturas. Foi elaborado um conjunto de testes com vários benchmarks de processamento de sinais para validação. Os experimentos mostraram que a solução é rápida, flexível e escalável, permitindo a exploração de uma ampla gama de arquiteturas antes de sua implementação física.
Current applications of signal processing in embedded systems demand hardware solutions with high processing power and low consumption. Moreover, these solutions must be scaled allowing easy adaptation in order to follow technological advances in the construction of integrated circuits. Coarse-grained reconfigurable array processors architectures allow to attend this demand, and nowadays are research focus that considers several ways to deal with its implementation, with variation of characteristics as topology, processing elements and routing capacity, among others. This work presents a placement algorithm in arrangements of processors capable to deal with variations of these characteristics, allowing early evaluation of its performance for several architectures. A test set with several DSP benchmarks was elaborated for validation. The experiments shows that the solution is fast, flexible and scalable, allowing exploration of an ample architecture spectrum before physical implementation.
Advisors/Committee Members: Ricardo dos Santos Ferreira, Carlos de Castro Goulart, Vladimir Oliveira Di Iorio, Luigi Carro, Marcus Vinícius Alvim Andrade.
Subjects/Keywords: Arquitetura de computador; Arquiteturas reconfiguráveis; Arranjos de grão grosso; CIENCIA DA COMPUTACAO; Computer architecture; Reconfigurable architectures; Coarse-grained processors
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APA (6th Edition):
Silva, M. V. d. (2006). Design space exploration for array reconfigurable architectures. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=745
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Silva, Marcos Vinicius da. “Design space exploration for array reconfigurable architectures.” 2006. Thesis, Universidade Federal de Viçosa. Accessed April 18, 2021.
http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=745.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Silva, Marcos Vinicius da. “Design space exploration for array reconfigurable architectures.” 2006. Web. 18 Apr 2021.
Vancouver:
Silva MVd. Design space exploration for array reconfigurable architectures. [Internet] [Thesis]. Universidade Federal de Viçosa; 2006. [cited 2021 Apr 18].
Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=745.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Silva MVd. Design space exploration for array reconfigurable architectures. [Thesis]. Universidade Federal de Viçosa; 2006. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=745
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Federal de Viçosa
17.
Tiago Aparecido Teixeira.
Heurísticas para a geração de arquiteturas reconfiguráveis em arranjos bidimensionais.
Degree: 2009, Universidade Federal de Viçosa
URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=2085
► Arquiteturas reconfiguráveis de grão grosso são alternativas para a redução do tempo de projeto, a complexidade do posicionamento e roteamento, o tempo de configuração e…
(more)
▼ Arquiteturas reconfiguráveis de grão grosso são alternativas para a redução do tempo de projeto, a complexidade do posicionamento e roteamento, o tempo de configuração e a memória de configuração para projetos de sistemas embarcados com demanda de alto desempenho e baixo consumo de energia. Porém o espaço de projeto é amplo e necessita de ferramentas flexíveis para sua exploração. Este trabalho propõe uma abordagem baseada em heurísticas (Algoritmos Genéticos, Simulated Annealing, Path Relinking) e algoritmos de escalonamento (ALAP e ASAP) visando as arquiteturas reconfiguráveis em arranjos com padrões regulares e escaláveis de interconexão. Para validar a ferramenta, um conjunto de aplicações multimídia, derivadas do conjunto de Mediabench e de núcleos de algoritmos para processamento de sinais (FIR, DCT etc.) Foi utilizado na avaliação de arquiteturas geradas. Os critérios de custo levaram em conta os números de conexões após o mapeamento, o caminho crítico e o tempo de busca das soluções. Os resultados experimentais mostraram que as arquiteturas geradas podem reduzir em quase 20% o custo de conexões quando comparados à topologia 0_1_hop, apontada por outros trabalhos como a mais adequada.
Coarse-grained reconfigurable architecture appears as an alternative solution to reduce the design time, the routing and placement complexity, the reconfiguration time, and the reconfiguration memory, to design high performance and low power embedded system. However, the design space is too wide and it needs new explorations tools. This work proposes an tool of the automatic exploration of design space of the topologies, to be the foccus based in heuristics (Genetic Algorithms, Simulated Annealing and Path Relinking) and schedule algorithms (ASAP and ALAP) to see reconfigurable architecture in arrays with regular patterns and scalable of the interconnection. To validate this tool, a set of multimedia applications, from the set of clusters Media bench and algorithms for signal processing (FIR, DCT etc.) was used in the evaluation of the generated architectures. The criteria for cost take into account the number of connections after the mapping, the critical path and the time to search for solutions. The experimental results showed that the generated architecture can reduce by almost 20% the cost of connections when compared to the topology 0_1_hop, identified by other studies as the most appropriate.
Advisors/Committee Members: Vladimir Oliveira Di Iorio, José Elias Cláudio Arroyo, André Gustavo dos Santos, João Manuel Paiva Cardoso, Ricardo dos Santos Ferreira.
Subjects/Keywords: Arquiteturas reconfiguráveis; Heurísticas; Arranjos de grão grosso; CIENCIA DA COMPUTACAO; Reconfigurable architectures; Heuristics; Coarse-grained arrays
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APA (6th Edition):
Teixeira, T. A. (2009). Heurísticas para a geração de arquiteturas reconfiguráveis em arranjos bidimensionais. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=2085
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Teixeira, Tiago Aparecido. “Heurísticas para a geração de arquiteturas reconfiguráveis em arranjos bidimensionais.” 2009. Thesis, Universidade Federal de Viçosa. Accessed April 18, 2021.
http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=2085.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Teixeira, Tiago Aparecido. “Heurísticas para a geração de arquiteturas reconfiguráveis em arranjos bidimensionais.” 2009. Web. 18 Apr 2021.
Vancouver:
Teixeira TA. Heurísticas para a geração de arquiteturas reconfiguráveis em arranjos bidimensionais. [Internet] [Thesis]. Universidade Federal de Viçosa; 2009. [cited 2021 Apr 18].
Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=2085.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Teixeira TA. Heurísticas para a geração de arquiteturas reconfiguráveis em arranjos bidimensionais. [Thesis]. Universidade Federal de Viçosa; 2009. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=2085
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
19.
Sonek, Alexander.
Header Parsing Logic in Network Switches Using Fine and Coarse-Grained Dynamic Reconfiguration Strategies.
Degree: 2014, University of Waterloo
URL: http://hdl.handle.net/10012/8383
► Current ASIC only designs which interface with a general purpose processor are fairly restricted as far as their ability to be upgraded after fabrication. The…
(more)
▼ Current ASIC only designs which interface with a general purpose processor are fairly restricted as far as their ability to be upgraded after fabrication. The primary intent of the research
documented in this thesis is to determine if the inclusion of FPGAs in existing ASIC designs can be considered as an option for alleviating this constraint by analyzing the performance of
such a framework as a replacement for the parsing logic in a typical network switch.
This thesis also covers an ancilliary goal of the research which is to compare the various methods used to reconfigure modern FPGAs, including the use of self initiated dynamic partial
reconfiguration, in regards to the degree in which they interrupt the operation of the device in which an FPGA is embedded. This portion of the research is also conducted in the context of a
network switch and focuses on the ability of the network switch to reconfigure itself dynamically when presented with a new type of network traffic.
Subjects/Keywords: FPGA; Coarse Grained; Fine Grained
…Reconfiguration . . . . . . . . . . . . . . . . . . . . . . . .
67
7.5
Coarse Architectures… …1.2 Coarse Grained . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
77
A.1.3 Fine… …reconfiguration process of FPGAs was investigated at two different levels, fine
and coarse-grained, in… …specific to the fine-grained re-configurable parser chain along with the supporting
logic which… …the components related to the coarse-grained reconfigurable parser logic.
2
Reading the…
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APA ·
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APA (6th Edition):
Sonek, A. (2014). Header Parsing Logic in Network Switches Using Fine and Coarse-Grained Dynamic Reconfiguration Strategies. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/8383
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sonek, Alexander. “Header Parsing Logic in Network Switches Using Fine and Coarse-Grained Dynamic Reconfiguration Strategies.” 2014. Thesis, University of Waterloo. Accessed April 18, 2021.
http://hdl.handle.net/10012/8383.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sonek, Alexander. “Header Parsing Logic in Network Switches Using Fine and Coarse-Grained Dynamic Reconfiguration Strategies.” 2014. Web. 18 Apr 2021.
Vancouver:
Sonek A. Header Parsing Logic in Network Switches Using Fine and Coarse-Grained Dynamic Reconfiguration Strategies. [Internet] [Thesis]. University of Waterloo; 2014. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10012/8383.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sonek A. Header Parsing Logic in Network Switches Using Fine and Coarse-Grained Dynamic Reconfiguration Strategies. [Thesis]. University of Waterloo; 2014. Available from: http://hdl.handle.net/10012/8383
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
20.
Floutsi, A.A. (author).
Aerosol Optical Properties over the Northwestern European Seas.
Degree: 2017, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:b1f89c77-6891-4e33-9308-6dd63969a888
► Atmospheric particulate matter (aerosols), originating from both natural and anthropogenic sources, is affecting the regional and global climate through direct, indirect, and semi-direct effects on…
(more)
▼ Atmospheric particulate matter (aerosols), originating from both natural and anthropogenic sources, is affecting the regional and global climate through direct, indirect, and semi-direct effects on the radiative energy budget of the Earth-atmosphere system. In order to quantify these effects it is necessary to determine the load of aerosol particles in the atmosphere. An effective way to do this is by measuring the aerosol optical depth (AOD). The higher the AOD values the greater the aerosol load. Along with AOD, the
Fine mode Fraction (contribution of particles smaller than 1 μm to the total AOD, FF) is an effective parameter for the characterization of the aerosol, providing a rough proxy for the size of the particle present in a region at a particular time. In this study, I investigate the spatiotemporal variability of the AOD, FF,
fine and
coarse mode AOD over the Northwestern European Seas (that extend from 43° N to 67° N and from 10° W to 31° E), where the presence of both natural and anthropogenic particles is significant. Anthropogenic particles (both primary and secondary aerosols, mostly
fine mode) originate from ship activity, or from urban-industrial and fossil fuel and biomass burning processes. The natural,
coarse mode particles are primarily originated either from the oceans (sea salt particles) or from the desserts (dessert dust particles). In the present study I use mean daily aerosol data (Collection 006 Level-3) from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument that is on board Aqua satellite. These data are available in 1° × 1° resolution (ca. 100 km × 100 km). The study period extends from 2002 until 2014. A significant spatial variability of the aerosol load is observed over the study region. On annual level, the highest AOD values (up to 0.32) are observed over the English Channel and the coasts of the Netherlands and Germany. The highest FF values (values up to 0.77) are observed over the same regions, indicating that a large contribution of the aerosol load is from anthropogenic particles. Offshore (at remote regions), both AOD and FF are lower compared to coastal regions, thus indicating the predominance of maritime aerosols (sea salt particles). The data also show a clear seasonal cycle, with larger aerosol load observed during spring and summer period (AOD up to 0.60), and lower during autumn and winter period (AOD up to 0.30). A similar pattern is observed only for the FF, implying a larger contribution of anthropogenic particles during spring and summer period compared to autumn and winter period. The highest FF values (up to 0.80- 0.85) are observed during summer over the Baltic Sea, while year-round the lowest values are observed in remote maritime areas, mostly in the northern part of the study region, accentuating the predominance of maritime/sea salt particles. The AOD experiences an overall decreasing trend over most of the study region (slope range between -0.18 to 0.05 per decade). Over the northwestern ocean parts of the study region positive values are…
Advisors/Committee Members: Biskos, G. (mentor), Riva, R.E.M. (mentor).
Subjects/Keywords: AOD; AOT; Fine mode AOD; Coarse mode AOD; Fine Fraction; Aerosol optical properties; Northwestern European Seas; aerosol load
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APA ·
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APA (6th Edition):
Floutsi, A. A. (. (2017). Aerosol Optical Properties over the Northwestern European Seas. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b1f89c77-6891-4e33-9308-6dd63969a888
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Floutsi, A A (author). “Aerosol Optical Properties over the Northwestern European Seas.” 2017. Thesis, Delft University of Technology. Accessed April 18, 2021.
http://resolver.tudelft.nl/uuid:b1f89c77-6891-4e33-9308-6dd63969a888.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Floutsi, A A (author). “Aerosol Optical Properties over the Northwestern European Seas.” 2017. Web. 18 Apr 2021.
Vancouver:
Floutsi AA(. Aerosol Optical Properties over the Northwestern European Seas. [Internet] [Thesis]. Delft University of Technology; 2017. [cited 2021 Apr 18].
Available from: http://resolver.tudelft.nl/uuid:b1f89c77-6891-4e33-9308-6dd63969a888.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Floutsi AA(. Aerosol Optical Properties over the Northwestern European Seas. [Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:b1f89c77-6891-4e33-9308-6dd63969a888
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Santos, Cristiane Carine dos.
Proposta de modelo de previsão do módulo de elasticidade estático do concreto de cimento Portland.
Degree: 2020, Brazil
URL: http://hdl.handle.net/10183/218215
► As estruturas de concreto armado são muito utilizadas, tanto em nível nacional como internacional, fazendo parte do padrão das estruturas de construção civil. Dessa forma…
(more)
▼ As estruturas de concreto armado são muito utilizadas, tanto em nível nacional como internacional, fazendo parte do padrão das estruturas de construção civil. Dessa forma é de fundamental importância conhecer as propriedades do concreto, principalmente a resistência à compressão e o módulo de elasticidade. Para estimar o módulo de elasticidade do concreto existem, além da NBR 6118 e normas internacionais, vários estudos conhecidos na literatura, entretanto a bibliografia aponta não ter confiança nesses modelos, que muitas vezes resultam em valores superestimados e, em outras situações, subestimados. O presente trabalho objetiva propor um modelo que contribua para a previsão do módulo de elasticidade do concreto a partir das variáveis selecionadas, como o volume de pasta, a relação água/cimento (resistência à compressão), a forma e o módulo de elasticidade do agregado graúdo. Após a seleção e estudo dos diferentes materiais utilizados para a
produção dos concretos, foi possível produzir as diversas misturas e obter os resultados de resistência à compressão e módulo de elasticidade. A partir do estudo do modelo para a previsão do módulo, os resultados confirmaram que as variáveis selecionadas e suas interações possuem influência significativa sobre o módulo de elasticidade do concreto, e dessa maneira foram incluídas no modelo de previsão proposto pelo presente trabalho. Como esperado, a variável independente que apresentou maior significância estatística para a resistência à compressão foi a relação água/cimento, já para o módulo de elasticidade a variável de maior impacto foi o volume de pasta, para todas as situações analisadas. A validação do modelo indica a viabilidade de aplicação do mesmo para a previsão do módulo. Quando se compara com os demais modelos propostos por normas e os conhecidos na literatura, o modelo da presente pesquisa se mostra entre os melhores modelos, com os menores erros e melhores coeficientes
estatísticos, indicando eficiência na utilização deste modelo para a previsão do módulo de elasticidade do concreto.
Reinforced concrete structures are widely used, both nationally and internationally, as part of the standard for civil construction structures. Thus, it is of fundamental importance to know the properties of concrete, especially the compressive strength and the modulus of elasticity. To estimate the modulus of elasticity of concrete, there are, in addition to NBR 6118 and international standards, several studies known in the literature, however the bibliography points to not having confidence in these models, which often result in overestimated values and, in other situations, underestimated. The present work aims to propose a model that contributes to the prediction of the modulus of elasticity of concrete from the selected variables, such as the volume of paste, the water / cement ratio (compressive strength), the shape and modulus of elasticity of the aggregate.
big. After the selection and study of the different materials used for the production of the concretes, it was possible…
Advisors/Committee Members: Dal Molin, Denise Carpena Coitinho, Isaia, Geraldo Cechella.
Subjects/Keywords: Concreto; Elasticidade; Resistência à compressão; Concrete; Folder volume; Characteristic resistance to compression; Coarse aggregate shape; Modulus of elasticity of coarse aggregate
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APA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Santos, C. C. d. (2020). Proposta de modelo de previsão do módulo de elasticidade estático do concreto de cimento Portland. (Doctoral Dissertation). Brazil. Retrieved from http://hdl.handle.net/10183/218215
Chicago Manual of Style (16th Edition):
Santos, Cristiane Carine dos. “Proposta de modelo de previsão do módulo de elasticidade estático do concreto de cimento Portland.” 2020. Doctoral Dissertation, Brazil. Accessed April 18, 2021.
http://hdl.handle.net/10183/218215.
MLA Handbook (7th Edition):
Santos, Cristiane Carine dos. “Proposta de modelo de previsão do módulo de elasticidade estático do concreto de cimento Portland.” 2020. Web. 18 Apr 2021.
Vancouver:
Santos CCd. Proposta de modelo de previsão do módulo de elasticidade estático do concreto de cimento Portland. [Internet] [Doctoral dissertation]. Brazil; 2020. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10183/218215.
Council of Science Editors:
Santos CCd. Proposta de modelo de previsão do módulo de elasticidade estático do concreto de cimento Portland. [Doctoral Dissertation]. Brazil; 2020. Available from: http://hdl.handle.net/10183/218215
22.
Foytik, Jacob D.
Locally Tuned Nonlinear Manifold for Person Independent Head
Pose Estimation.
Degree: PhD, Electrical Engineering, 2011, University of Dayton
URL: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1311968002
► Fine-grain head pose estimation from imagery is an essential operation for many human-centered systems, including pose independent face recognition and human-computer interaction systems. It is…
(more)
▼ Fine-grain head pose estimation from imagery is an
essential operation for many human-centered systems, including pose
independent face recognition and human-computer interaction
systems. It is only recently that estimation systems have evolved
past a
coarse level classification of pose and concentrated on
fine-grain estimation. In particular, the state of the art of such
systems consists of nonlinear manifold embedding techniques, such
as Locally Linear Embedding and Isomap, that capture the intrinsic
relationship of a pose varying face dataset. The success of these
solutions can be attributed to the acknowledgment that image
variation corresponding to pose change is nonlinear in nature. Yet,
these algorithms are limited by the complexity of embedding
functions that describe the relationship and provide no clear
method for projecting novel data to the latent space. On the other
hand, linear methods and nonlinear approximation techniques permit
a simple embedding process, but lack the representational quality
to globally describe the nonlinear image variation. In this
dissertation, a pose estimation framework that seeks to describe
the global nonlinear relationship in terms of localized linear
functions is presented. A locally tuned nonlinear manifold is
formulated using a two-layer system based on the assumptions that
coarse pose estimation can be performed adequately using supervised
linear methods, and
fine pose estimation can be achieved using
linear regressive functions if the scope of the pose manifold is
limited. The localized linear approach results in a simplistic
model for which probe input can be embedded through a cascade of
linear transformations. Additionally, new methods for modeling the
localized structures using feature enhanced Canonical Correlation
Analysis are developed, where pose variation is regarded as a
continuous variable and is represented by a manifold in feature
space. The feature enhanced methods are used to identify the modes
of correlation between the observed input images and the head pose
angle. These techniques exploit oriented filters which serve two
key purposes: (a) eliminate noise features, while boosting image
elements that are associated with head pose (b) provide multiple
dimensions of the input, allowing the correlation analysis process
to extract more basis vectors to provide higher accuracy. A pose
estimation system is implemented utilizing simple linear subspace
methods, phase congruency, and Gabor features. The framework is
tested using conventional test strategies and widely accepted
pose-varying face databases. The proposed method is first tested
using homogeneous datasets, where the training and testing face
images are sampled from the same database. The generalization
capabilities of the system are then tested using heterogeneous
tests, where the training data is taken from a different database
than the testing set. The proposed system is shown to perform
fine
head pose estimation with competitive accuracy when compared with
state of the art nonlinear manifold…
Advisors/Committee Members: Asari, Vijayan (Committee Chair).
Subjects/Keywords: Computer Engineering; Electrical Engineering; Head Pose Estimation; Piecewise Linear Manifold; Pose Sensitive Representations; Coarse to Fine; Head Orientation; Phase Congruency
…supervised neighborhood estimation process. In effect, a coarse to fine pose estimation
method is… …computationally
expensive and are unable to perform fine/continuous pose estimation.
Dimensionality… …region, Rφ ,
projections are created to describe pose change (Pφ ).
Layer 2 - Fine… …supported by coarse pose estimation. We hypothesize that by defining the system in a coarse to… …localized transforms serve to refine the coarse estimate
performed by the 1st layer of the system…
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APA (6th Edition):
Foytik, J. D. (2011). Locally Tuned Nonlinear Manifold for Person Independent Head
Pose Estimation. (Doctoral Dissertation). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1311968002
Chicago Manual of Style (16th Edition):
Foytik, Jacob D. “Locally Tuned Nonlinear Manifold for Person Independent Head
Pose Estimation.” 2011. Doctoral Dissertation, University of Dayton. Accessed April 18, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1311968002.
MLA Handbook (7th Edition):
Foytik, Jacob D. “Locally Tuned Nonlinear Manifold for Person Independent Head
Pose Estimation.” 2011. Web. 18 Apr 2021.
Vancouver:
Foytik JD. Locally Tuned Nonlinear Manifold for Person Independent Head
Pose Estimation. [Internet] [Doctoral dissertation]. University of Dayton; 2011. [cited 2021 Apr 18].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1311968002.
Council of Science Editors:
Foytik JD. Locally Tuned Nonlinear Manifold for Person Independent Head
Pose Estimation. [Doctoral Dissertation]. University of Dayton; 2011. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1311968002
Cornell University
23.
Torng, Christopher.
Software, Architecture, and VLSI Co-Design for Fine-Grain Voltage and Frequency Scaling.
Degree: PhD, Electrical and Computer Engineering, 2019, Cornell University
URL: http://hdl.handle.net/1813/69995
► As emerging domains demand higher performance under stringent constraints on power and energy, computer architects are increasingly relying on a combination of parallelization and specialization…
(more)
▼ As emerging domains demand higher performance under stringent constraints on power and energy, computer architects are increasingly relying on a combination of parallelization and specialization to improve both performance and energy efficiency. However, the combination of parallelism and specialization is also steadily increasing on-chip asymmetry in the form of spatial heterogeneity and temporal variation, which poses key challenges in the form of widely varying utilization in space (i.e., across different components) and in time (i.e., used at different times across varying performance levels).
Fine-grain on-chip asymmetry requires analogously
fine-grain power-control techniques in order to power (or not power) different components to different levels at just the right times to significantly reduce waste. At the same time, traditional walls of abstraction have broken down, allowing a cross-stack co-design approach across software, architecture, and VLSI to provide new, previously inaccessible information to precisely control new hardware mechanisms. This thesis explores novel
fine-grain voltage and frequency scaling techniques to improve both performance and energy efficiency with software, architecture, and VLSI co-design. First, I explore architecture-circuit co-design and leverage recent work on fully integrated voltage regulation to enable realistic
fine-grain voltage and frequency scaling for homogeneous systems of little cores at microsecond timescales. Second, I broaden the scope to heterogeneous systems of big and little cores and specialize for productive software task-based parallel runtimes. Third, I investigate much finer-grain asymmetry that can be exploited within
coarse-grain reconfigurable arrays, which have recently attracted significant interest due to their flexibility and potential for reducing data movement energy. Finally, I describe my work on four silicon prototypes including a mixed-signal test chip and three digital ASIC test chips that support different aspects of my thesis. Throughout my thesis, I take a software, architecture, and VLSI co-design approach and focus on exploiting information newly exposed across layers of abstraction. I leverage a vertically integrated research methodology spanning across applications, runtimes, architecture, cycle-level modeling, RTL, VLSI CAD tools, SPICE-level modeling, and silicon prototyping to evaluate the potential benefit of
fine-grain voltage and frequency scaling techniques.
Advisors/Committee Members: Batten, Christopher (chair), Apsel, Alyssa B. (committee member), Manohar, Rajit (committee member).
Subjects/Keywords: computer architecture; fine-grain dvfs; heterogeneous computing; integrated voltage regulation; reconfigurable architectures; work-stealing runtimes
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APA (6th Edition):
Torng, C. (2019). Software, Architecture, and VLSI Co-Design for Fine-Grain Voltage and Frequency Scaling. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/69995
Chicago Manual of Style (16th Edition):
Torng, Christopher. “Software, Architecture, and VLSI Co-Design for Fine-Grain Voltage and Frequency Scaling.” 2019. Doctoral Dissertation, Cornell University. Accessed April 18, 2021.
http://hdl.handle.net/1813/69995.
MLA Handbook (7th Edition):
Torng, Christopher. “Software, Architecture, and VLSI Co-Design for Fine-Grain Voltage and Frequency Scaling.” 2019. Web. 18 Apr 2021.
Vancouver:
Torng C. Software, Architecture, and VLSI Co-Design for Fine-Grain Voltage and Frequency Scaling. [Internet] [Doctoral dissertation]. Cornell University; 2019. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1813/69995.
Council of Science Editors:
Torng C. Software, Architecture, and VLSI Co-Design for Fine-Grain Voltage and Frequency Scaling. [Doctoral Dissertation]. Cornell University; 2019. Available from: http://hdl.handle.net/1813/69995
Rutgers University
24.
Li, Sugang, 1988-.
Future IoT network architecture and applications in mobile sensing.
Degree: PhD, Electrical and Computer Engineering, 2018, Rutgers University
URL: https://rucore.libraries.rutgers.edu/rutgers-lib/59157/
► As the number of networked devices rapidly increases in the past few years, the era of the Internet of Things (IoT) has arrived. IoT integrates…
(more)
▼ As the number of networked devices rapidly increases in the past few years, the era of the Internet of Things (IoT) has arrived. IoT integrates a variety of existing technologies such as wireless sensor network, mobile sensing, and wearables, while new challenges arise as a result of this integration. In this thesis, we aim at addressing the following challenges. First, these technologies are isolated within insular management and communication systems, where inter-system communication is either absent or cumbersome. Current network protocols such as IP fail to support the scalability requirement of IoT. Meanwhile, the growth of connected devices imposes a tremendous amount of small packets with repeated or similar content, which leads to inefficient network resource utilization.
Finally, due to the deployment cost of IoT infrastructure, IoT sensing service is missing in many suburban areas.
In the first part of this dissertation, we design and implement MF-IoT, a new IoT architecture based upon future internet architecture MobilityFirst, to address the global reachability and scalability challenge. We extend MobilityFirst to resource-constraint devices by adopting shorter device/service identifiers, which we refer as the Local Unique Identifier. At the same time, we maintain the transparency at the application layer, i.e., communication between applications is still based on the full-length Global Unique Identifier that is used in MobilityFirst. Besides, MF-IoT provides cross-domain rich communication patterns (unicast, multicast, etc.) as well as mobility. Through detailed evaluation, we show that MF-IoT outperforms the existing solution, and also provides the global reachability via id-based communication.
In the second part of this dissertation, we propose AggMEC, an IoT traffic aggregation system that reduces total network traffic for any data collection traffic flow. By introducing a novel cost function, we are able to adopt two clustering-based algorithms to minimize the overall network traffic in any unspecific network topology. In addition, we design our routing plane over MobilityFirst, which avoid obtrusive destination address translation in the IP network. Through detailed evaluation, we show that our first algorithm outperforms two other baseline schemes in both total network traffic as well as end-to-end latency when the resource is specified by the application provider, while the second can achieves better aggregation efficiency if the resource is unspecified.
In the third part of this dissertation, we propose Auto++, a mobile roadside context sensing system to support pedestrian safety and traffic monitoring applications in low population areas. Auto++ analyzes audio stream captured by microphones on smartphones to extract the features (maximum frequency on a particular energy & Time Difference of Arrival) to detect the presence of cars and their arriving direction.
Also, Auto++ can also count the pass-by cars on the road in real-life. Through detailed experiments, we show that Auto++ can…
Advisors/Committee Members: Raychaudhuri, Dipankar (chair), School of Graduate Studies.
Subjects/Keywords: Internet of things; Machine-to-machine communications; Computer network architectures
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APA (6th Edition):
Li, Sugang, 1. (2018). Future IoT network architecture and applications in mobile sensing. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/59157/
Chicago Manual of Style (16th Edition):
Li, Sugang, 1988-. “Future IoT network architecture and applications in mobile sensing.” 2018. Doctoral Dissertation, Rutgers University. Accessed April 18, 2021.
https://rucore.libraries.rutgers.edu/rutgers-lib/59157/.
MLA Handbook (7th Edition):
Li, Sugang, 1988-. “Future IoT network architecture and applications in mobile sensing.” 2018. Web. 18 Apr 2021.
Vancouver:
Li, Sugang 1. Future IoT network architecture and applications in mobile sensing. [Internet] [Doctoral dissertation]. Rutgers University; 2018. [cited 2021 Apr 18].
Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/59157/.
Council of Science Editors:
Li, Sugang 1. Future IoT network architecture and applications in mobile sensing. [Doctoral Dissertation]. Rutgers University; 2018. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/59157/
25.
Casaca, Luís Miguel Correia.
Sensibilidade do componente n170 à natureza ortográfica do estímulo.
Degree: 2017, RCAAP
URL: https://www.rcaap.pt/detail.jsp?id=oai:sapientia.ualg.pt:10400.1/10125
► Dissertação de mestrado, Neurociências Cognitivas e Neuropsicologia, Faculdade de Ciências Humanas e Sociais, Universidade do Algarve, 2017
O sistema visual dos indivíduos letrados possui expertise…
(more)
▼ Dissertação de mestrado, Neurociências Cognitivas e Neuropsicologia, Faculdade de Ciências Humanas e Sociais, Universidade do Algarve, 2017
O sistema visual dos indivíduos letrados possui expertise no reconhecimento visual de palavras, indicando que o ser humano processa a palavra escrita de uma maneira distinta e mais específica do que outros estímulos visuais (McCandliss, Cohen, & Dehaene, 2003). Esta expertise do sistema visual manifesta-se através um pico de atividade eletrofisiológica que surge cerca de 170ms após a apresentação do estímulo visual (o N170), que é considerada uma resposta cerebral específica ao código ortográfico (coarse tuning to print) e que tem sido usado como marcador neuronal da experiência de leitura. Neste estudo pretende-se averiguar se, em leitores experientes, o N170 é sensível a características pós-lexicais do estímulo ortográfico, nomeadamente o seu estatuto lexical (palavra versus pseudopalavra) e sua consistência grafema-fonema, e se essa sensibilidade depende do nível de competência de leitura. Participaram neste estudo 42 sujeitos adultos (30 do sexo feminino, idades entre 17 e 32 anos, escolaridade ao nível do Ensino Superior), tendo sido registada a sua atividade elétrica cerebral durante uma prova de leitura implícita. Os resultados obtidos mostram um forte efeito de hemisfério em que a amplitude do N170 é maior no hemisfério esquerdo e um efeito de consistência moderadamente significativo onde a amplitude do N170 é maior em palavras onde existe consistência grafema-fonema. Foi ainda apurado um efeito de lexicalidade significativo. Por fim, a perícia de leitura parece não estar associada à magnitude do componente N170.
Advisors/Committee Members: Faísca, Luís.
Subjects/Keywords: Leitura; Fine tuning; Coarse tuning; ERP; N170; Reconhecimento visual de palavras; Domínio/Área Científica::Ciências Sociais::Psicologia
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APA (6th Edition):
Casaca, L. M. C. (2017). Sensibilidade do componente n170 à natureza ortográfica do estímulo. (Thesis). RCAAP. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:sapientia.ualg.pt:10400.1/10125
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Casaca, Luís Miguel Correia. “Sensibilidade do componente n170 à natureza ortográfica do estímulo.” 2017. Thesis, RCAAP. Accessed April 18, 2021.
https://www.rcaap.pt/detail.jsp?id=oai:sapientia.ualg.pt:10400.1/10125.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Casaca, Luís Miguel Correia. “Sensibilidade do componente n170 à natureza ortográfica do estímulo.” 2017. Web. 18 Apr 2021.
Vancouver:
Casaca LMC. Sensibilidade do componente n170 à natureza ortográfica do estímulo. [Internet] [Thesis]. RCAAP; 2017. [cited 2021 Apr 18].
Available from: https://www.rcaap.pt/detail.jsp?id=oai:sapientia.ualg.pt:10400.1/10125.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Casaca LMC. Sensibilidade do componente n170 à natureza ortográfica do estímulo. [Thesis]. RCAAP; 2017. Available from: https://www.rcaap.pt/detail.jsp?id=oai:sapientia.ualg.pt:10400.1/10125
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
26.
Lu, Chun-Chung.
Influences of Aeolian Dust Emitted from Bare Lands in Kaoping River on Regional Ambient Particulates and Their Physiochemical Characteristics, Indicators, and Source Appointments.
Degree: PhD, Environmental Engineering, 2018, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724118-160440
► Aeolian dust episodes (ADEs) are emerging disasters occurred from the bare lands of the Kaoping River in southern Taiwan due to typhoons or thermal convections.…
(more)
▼ Aeolian dust episodes (ADEs) are emerging disasters occurred from the bare lands of the Kaoping River in southern Taiwan due to typhoons or thermal convections. Four manual sampling sites located along the Kaoping River were conducted to collect PM10 (aerodynamic diameter ⤠10 μm) with high-volume samplers in an ADE and on regular days in 2012, as well as PM2.5 (aerodynamic diameter ⤠2.5 μm) and PM2.5â10 (aerodynamic diameter 2.5â10 μm) in six ADEs in 2013. Additionally, soil samples were collected at five potential locations on the surface of bare lands along the Kaoping River Valley. The five soil samples were completely mixed and then sieved with a Tyler 400 mesh (dp < 38 μm) and then resuspended using a dry powder atomizer in a resuspension chamber. Each soil sample could be divided into two independent fractions (i.e., PM2.5 and PM2.5â10). With regard to the ADE and alluvial samples, this study investigated on their chemical contents, including a total of 13 metallic elements, 9 water-soluble ionic species, and 2 carbonaceous species.
Hourly averaged PM10 concentrations increased drastically from noon to evening, and maximum PM10 concentration levels were reached within 3â4 hours. Sea-salt particles (SSs) in PM10 accounted for 3.56%-5.17% on regular days and 11.66%-16.47% during the ADE. Cl- deficit percentages during the ADE (6.33%-14.12%) were much lower than those on regular days (29.49%-40.38%), indicating acidic particles mainly produced by chemical reactions of acidic aerosols with aeolian dust and SSs. Even alkaline aeolian dust is the dominant source of PM10 during the ADE; the atmospheric particles are attributable to acidic particles in the air. Furthermore, ADEs were clustered by the prevailing wind direction as southern and northwestern types according to four Taiwan Environmental Protection Administration air quality monitoring stations along the Kaoping River in southern Taiwan in 2013. With metallic element analysis and nonparametric statistical methods of Wilcoxon rank-sum test and Kruskal-Wallis test, this study successfully derived the metallic indicators of ADEs. The mass ratios of crustal elements (Fe, Ca, or Al) to reference element (Cd) obtained during the ADEs were much higher than those obtained after the ADEs. High mass ratios of Fe/Cd, Ca/Cd, and Al/Cd in PM2.5-10 were observed over the influenced areas of ADEs. Among them, (Fe/Cd)2.5-10 was proven as the best indicator which can be applied to effectively validate the existence of ADEs and evaluate their influences on ambient air quality. Moreover, PM2.5 concentrations during the ADEs were 3-3.6 fold higher than those after the ADEs. PM2.5 should be a contributor to AD, even though the mass ratios of PM2.5/PM10 ranged from 0.05 to 0.20 during the ADEs. Our findings provide valuable information regarding the characteristics of the AD during the ADEs in the Kaoping River.
The CMB receptor modeling results that aeolian dust and sea-salts in PM10 were major components of atmospheric particles during the cluster ADEs. The contribution…
Advisors/Committee Members: Chen, Shui-Jen (chair), Chang, Yu-Min (chair), Yuan, Chung-Shin (committee member), Lin, Wen-Yinn (chair), Lee, Chang-Gai (chair).
Subjects/Keywords: typhoons; particulate air quality; identifiable indicators; fine and coarse particles; chemical characteristics; aeolian dust episodes (ADEs)
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lu, C. (2018). Influences of Aeolian Dust Emitted from Bare Lands in Kaoping River on Regional Ambient Particulates and Their Physiochemical Characteristics, Indicators, and Source Appointments. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724118-160440
Chicago Manual of Style (16th Edition):
Lu, Chun-Chung. “Influences of Aeolian Dust Emitted from Bare Lands in Kaoping River on Regional Ambient Particulates and Their Physiochemical Characteristics, Indicators, and Source Appointments.” 2018. Doctoral Dissertation, NSYSU. Accessed April 18, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724118-160440.
MLA Handbook (7th Edition):
Lu, Chun-Chung. “Influences of Aeolian Dust Emitted from Bare Lands in Kaoping River on Regional Ambient Particulates and Their Physiochemical Characteristics, Indicators, and Source Appointments.” 2018. Web. 18 Apr 2021.
Vancouver:
Lu C. Influences of Aeolian Dust Emitted from Bare Lands in Kaoping River on Regional Ambient Particulates and Their Physiochemical Characteristics, Indicators, and Source Appointments. [Internet] [Doctoral dissertation]. NSYSU; 2018. [cited 2021 Apr 18].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724118-160440.
Council of Science Editors:
Lu C. Influences of Aeolian Dust Emitted from Bare Lands in Kaoping River on Regional Ambient Particulates and Their Physiochemical Characteristics, Indicators, and Source Appointments. [Doctoral Dissertation]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0724118-160440
Tampere University
27.
Yang, Dan.
Hierarchical regression learning for car pose estimation
.
Degree: 2017, Tampere University
URL: https://trepo.tuni.fi/handle/10024/100897
► Car pose estimation is a hot topic in computer vision because of its significance in intelligent transportation system. Considering the circular label space of car…
(more)
▼ Car pose estimation is a hot topic in computer vision because of its significance in intelligent transportation system. Considering the circular label space of car pose, the main limitation of classification approach is that the natural latent continuous-changing correlation across pose labels are omitted. It is more meaningful to formulate this problem as a continuous regression problem. However, the changing of light conditions and various vehicle models make imagery feature very inconsistent which easily leads global regression methods fail. In order to improve the robustness of regression learning, we proposed two novel hierarchical frameworks both of which consist of weak classifiers and strong regressors. In the first framework, Part-Aware Target Coding (PATC), the classifiers are used to predict probabilities of presence of some visible pose-sensitive parts. The probabilities together with the low level imagery features can be used as more consistent input features to train a strong regressor. The second framework, Hierarchical Sliding Slice Regression (HSSR), is in a coarse-to-fine manner. Coarse classifiers are first used to determine the belonging target group and the target group optimised fine regressors are used to estimate viewing angles. These two frameworks are applied on the benchmarking EPFL Multi-view car dataset and both of them achieve superior performance as compared to the state-of-the-art approaches.
Subjects/Keywords: pose estimation;
visual regression;
hierarchical framework;
target coding;
pose-sensitive parts;
coarse classifiers;
fine regressors;
method evaluation
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yang, D. (2017). Hierarchical regression learning for car pose estimation
. (Masters Thesis). Tampere University. Retrieved from https://trepo.tuni.fi/handle/10024/100897
Chicago Manual of Style (16th Edition):
Yang, Dan. “Hierarchical regression learning for car pose estimation
.” 2017. Masters Thesis, Tampere University. Accessed April 18, 2021.
https://trepo.tuni.fi/handle/10024/100897.
MLA Handbook (7th Edition):
Yang, Dan. “Hierarchical regression learning for car pose estimation
.” 2017. Web. 18 Apr 2021.
Vancouver:
Yang D. Hierarchical regression learning for car pose estimation
. [Internet] [Masters thesis]. Tampere University; 2017. [cited 2021 Apr 18].
Available from: https://trepo.tuni.fi/handle/10024/100897.
Council of Science Editors:
Yang D. Hierarchical regression learning for car pose estimation
. [Masters Thesis]. Tampere University; 2017. Available from: https://trepo.tuni.fi/handle/10024/100897
Brno University of Technology
28.
Viktorin, Michal.
Filtrace vzduchu v systémech vzduchotechniky: The filtration in air conditioning systems.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/138381
► The diploma thesis is divided into three parts, analysis of the topic and the chosen method of solutions, application to specified building and experimental solutions…
(more)
▼ The diploma thesis is divided into three parts, analysis of the topic and the chosen method of solutions, application to specified building and experimental solutions and data processing The first part is theoretical. It is about air filtration in terms of normative and legal requirements and variants of technical solutions for air filtration. In the second part there are two technical solutions for HVAC systems for plastic surgery. The third part is experimental. It is the measurement of the number of particles in the air in the operating room and the evaluation of the measurement.
Advisors/Committee Members: Rubina, Aleš (advisor), Andrys, Petr (referee).
Subjects/Keywords: Filtrace; hrubé filtry; jemné filtry; Hepa; Ulpa; vzduchotechnika; aerosol; mikroklima.; Filtration; coarse filters; fine filters; HEPA; ULPA; air conditioning; aerosol; microcliamte.
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Manager
APA (6th Edition):
Viktorin, M. (2019). Filtrace vzduchu v systémech vzduchotechniky: The filtration in air conditioning systems. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/138381
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Viktorin, Michal. “Filtrace vzduchu v systémech vzduchotechniky: The filtration in air conditioning systems.” 2019. Thesis, Brno University of Technology. Accessed April 18, 2021.
http://hdl.handle.net/11012/138381.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Viktorin, Michal. “Filtrace vzduchu v systémech vzduchotechniky: The filtration in air conditioning systems.” 2019. Web. 18 Apr 2021.
Vancouver:
Viktorin M. Filtrace vzduchu v systémech vzduchotechniky: The filtration in air conditioning systems. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/11012/138381.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Viktorin M. Filtrace vzduchu v systémech vzduchotechniky: The filtration in air conditioning systems. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/138381
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Louisiana State University
29.
Ferro, Michael Leslie.
Ecology and Systematics of Coleoptera in Woody Debris of Eastern North American Forests.
Degree: PhD, Entomology, 2011, Louisiana State University
URL: etd-11012011-144816
;
https://digitalcommons.lsu.edu/gradschool_dissertations/2533
► Dead wood is a largely unexplored reservoir of taxonomic diversity and its ecology is poorly known despite its use as fuel and its roles in…
(more)
▼ Dead wood is a largely unexplored reservoir of taxonomic diversity and its ecology is poorly known despite its use as fuel and its roles in the carbon cycle and healthy ecosystems. During this research 15 new species of dead wood associated rove beetles (Staphylinidae: Pselaphinae) in the genus Sonoma Casey were discovered and described. Sonoma tolulae (LeConte) was redescribed. Taxonomic issues obfuscated the identity of another dead wood associate, Thoracophorus costalis (Erichson) (Staphylinidae: Osoriinae). Examination of holotypes resulted in the discovery of two nomenclatural synonyms: T. longicollis Motschulsky, and T. fletcheri Wendeler. An inexpensive emergence chamber used to collect insects emergent from dead wood was designed using a modified 18-gallon plastic tote box. Five fundamental axes of emergence chamber design are identified and discussed. A study was conducted to explore diversity and abundance of beetles utilizing dead twigs in Louisiana and how they are affected by twig position. A total of 414 specimens representing 35 species were collected. Ground level bundles had the lowest richness, aboveground bundles were highest, and propped bundles were intermediate. Three simultaneous studies (totaling 12,406 specimens) took place at six sites (half primary, half secondary forests) in Great Smoky Mountains National Park (GSMNP), USA. Leaf litter and extremely decayed downed coarse woody debris (CWD5) were sampled for Coleoptera with a sifting/Berlese technique. A total of 4261 specimens, representing 216 species were collected. Leaf litter yielded more specimens than CWD5, but both habitats had equal species richness. Coleoptera were collected from various decay classes of fine and coarse woody debris (FWD and CWD, respectively) using an emergence chamber. A total of 5673 specimens, representing 305 species were collected. Of 71 species available for statistical analysis, 27 were associated with fresh FWD, 11 with weathered FWD, four with CWD decay class I, 14 with CWD decay class II, and eight with CWD decay class III-IV. A short-term flight intercept trap (FIT) survey was conducted at two sites and 2472 specimens, representing 217 species, were collected. Species overlap of FIT and emergence was too low to justify FITs as a surrogate technique to survey saproxylic Coleoptera.
Subjects/Keywords: Pselaphinae; coarse woody debris; Saproxylic; Great Smoky Mountains National Park; fine woody debris; Coleoptera; emergence; twig; Thoracophorus; Sonoma
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APA (6th Edition):
Ferro, M. L. (2011). Ecology and Systematics of Coleoptera in Woody Debris of Eastern North American Forests. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-11012011-144816 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2533
Chicago Manual of Style (16th Edition):
Ferro, Michael Leslie. “Ecology and Systematics of Coleoptera in Woody Debris of Eastern North American Forests.” 2011. Doctoral Dissertation, Louisiana State University. Accessed April 18, 2021.
etd-11012011-144816 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2533.
MLA Handbook (7th Edition):
Ferro, Michael Leslie. “Ecology and Systematics of Coleoptera in Woody Debris of Eastern North American Forests.” 2011. Web. 18 Apr 2021.
Vancouver:
Ferro ML. Ecology and Systematics of Coleoptera in Woody Debris of Eastern North American Forests. [Internet] [Doctoral dissertation]. Louisiana State University; 2011. [cited 2021 Apr 18].
Available from: etd-11012011-144816 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2533.
Council of Science Editors:
Ferro ML. Ecology and Systematics of Coleoptera in Woody Debris of Eastern North American Forests. [Doctoral Dissertation]. Louisiana State University; 2011. Available from: etd-11012011-144816 ; https://digitalcommons.lsu.edu/gradschool_dissertations/2533
Virginia Tech
30.
Phillips, Dennis Ivan.
Optimum Processing of 1 mm by Zero Coal.
Degree: PhD, Mining and Minerals Engineering, 1998, Virginia Tech
URL: http://hdl.handle.net/10919/30516
► Coal in the finer particle size ranges (below 1 mm) has always suffered from poor cleaning efficiencies. This problem has been exacerbated in recent years…
(more)
▼ Coal in the finer particle size ranges (below 1 mm) has always suffered from poor
cleaning efficiencies. This problem has been exacerbated in recent years with the increased
amount of high ash fines due to continuous mining machines and the mining of dirtier coal
seams. In the present work, it is proposed to improve overall plant efficiencies by processing
coarser coal in column flotation than is now commonly treated by that method. Column
flotation for
coarse coal is supported by actual lab and plant test data that result in a full-scale
column plant installation. The fundamentals of
coarse particle detachment from bubbles are
reviewed and a new simplified model is developed which better handles cubical and
rectangular coal particles.
Much of the lower efficiency of
fine coal cleaning is due to poor size separation of
the
fine-sized raw coal which results in misplaced high ash fines reporting to the coarser size
streams. By sending coarser material to column flotation, the finest size separation that takes
place in a plant can be as
coarse as 0.5 mm or greater. The proper use of wash water in a
flotation column then becomes the best mechanism for desliming of the high ash clays. This
work quantifies the benefits of removing the high ash fines from the plant product and
increasing overall plant yield by increasing the amount of near-gravity
coarse material. The
resulting yield gain is greater than that obtained from only the increased
fine coal recovery.
Methods of column operation for improved
coarse coal recovery are also evaluated.
Advisors/Committee Members: Yoon, Roe-Hoan (committeechair), Palowitch, E. R. (committee member), Wicks, Alfred L. (committee member), Adel, Gregory T. (committee member), Luttrell, Gerald H. (committee member).
Subjects/Keywords: Coal processing; coarse coal flotation; fine coal; column flotation
Record Details
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Record Details
Similar Records
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Phillips, D. I. (1998). Optimum Processing of 1 mm by Zero Coal. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/30516
Chicago Manual of Style (16th Edition):
Phillips, Dennis Ivan. “Optimum Processing of 1 mm by Zero Coal.” 1998. Doctoral Dissertation, Virginia Tech. Accessed April 18, 2021.
http://hdl.handle.net/10919/30516.
MLA Handbook (7th Edition):
Phillips, Dennis Ivan. “Optimum Processing of 1 mm by Zero Coal.” 1998. Web. 18 Apr 2021.
Vancouver:
Phillips DI. Optimum Processing of 1 mm by Zero Coal. [Internet] [Doctoral dissertation]. Virginia Tech; 1998. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10919/30516.
Council of Science Editors:
Phillips DI. Optimum Processing of 1 mm by Zero Coal. [Doctoral Dissertation]. Virginia Tech; 1998. Available from: http://hdl.handle.net/10919/30516
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Open Access Theses and Dissertations
