Дисертації з теми "BoBW model"
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Sessions, Blake A. "A computational bow-spring model." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/65303.
Повний текст джерела"May 2010." Cataloged from PDF version of thesis.
Bow-springs find few applications in industry. Principally, they are used in archery. In addition, they have found some use in a compression-spring mode in the field of biomechatronics, to emulate elastic human legs. The mechanical behavior (characterized by deflected shape and deformation force) is difficult to model, because internal forces and moments and the geometry are both unknown. The only closed-form solutions to such systems are relatively useless to a mechanical engineer. This work comprises an iterative model developed in MATLAB that computes the mechanical behavior of buckled beam (or bow-spring) sections, over a range of parameters and geometries, to be used in the development and testing of compression bow-springs as parallel loading systems to the human leg.
by Blake A. Sessions.
S.B.
Cantone, Daniel. "Bob Johnson: Coach, Leader, Role Model, Community Servant." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etd/1155.
Повний текст джерелаVakkalanka, Suryanarayana. "Simplified Bow Model for a Striking Ship in Collision." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/32974.
Повний текст джерелаMaster of Science
Mims, Patricia A. "Agricultural change in the urban-rural fringe: a test of the perimetropolitan bow wave model." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/43133.
Повний текст джерелаMaster of Science
Zawadzki, Alexi. "A sensitivity analysis of the hydrology of the Bow Valley above Banff, Alberta using the UBC Watershed Model." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq24395.pdf.
Повний текст джерелаWeymouth, Gabriel David. "Physics and learning based computational models for breaking bow waves based on new boundary immersion approaches." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44754.
Повний текст джерелаIncludes bibliographical references (p. 215-219).
A ship moving on the free surface produces energetic breaking bow waves which generate spray and air entrainment. Present experimental, analytic, and numerical studies of this problem are costly, inaccurate and not robust. This thesis presents new cost-effective and accurate computational tools for the design and analysis of such ocean systems through a combination of physics-based and learning-based models. Methods which immerse physical boundaries on Cartesian background grids can model complex topologies and are well suited to study breaking bow waves. However, current methods such as Volume of Fluid and Immersed Boundary methods have numerical and modeling limitations. This thesis advances the state of the art in Cartesian-grid methods through development of a new conservative Volume-of-fluid algorithm and the Boundary Data Immersion Method, a new approach to the formulation and implementation of immersed bodies. The new methods are simple, robust and shown to out perform existing approaches for a wide range of canonical test problems relevant to ship wave flows. The new approach is used to study breaking bow waves through 2D+T and 3D simulations. The 2D+T computations compare well with experiments and breaking bow wave metrics are shown to be highly sensitive to the ship geometry. 2D+T breaking bow wave predictions are compared quantitatively to 3D computations and shown to be accurate only for certain flow features and very slender high speed vessels. Finally the thesis formalizes the study and development of physics-based learning models (PBLM) for complex engineering systems. A new generalized PBLM architecture is developed based on combining fast simple physics-based models with available high-fidelity data.
(cont.) Models are developed and trained to accurately predict the wave field and breaking bow waves of a ship orders of magnitude faster than standard methods. Built on the new boundary immersion approaches, these computational tools are sufficiently cost-effective and robust for use in practical design and analysis.
by Gabriel David Weymouth.
Sc.D.
Ghaffari, Reza [Verfasser], Roger Andrew Akademischer Betreuer] Sauer, and Robert [Akademischer Betreuer] [Svendsen. "Continuum mechanical models of atomistic crystalline surface manifolds / Reza Ghaffari ; Akademische Betreuer: Roger Andrew Sauer, Bob Svendsen." Aachen : Universitätsbibliothek RWTH Aachen, 2019. http://d-nb.info/1194111513/34.
Повний текст джерелаTauscher, Helga [Verfasser], Raimar J. [Akademischer Betreuer] [Gutachter] Scherer, Bob [Gutachter] Martens, and Frank [Gutachter] Petzold. "Configurable nD-visualization for complex Building Information Models / Helga Tauscher ; Gutachter: Raimar J. Scherer, Bob Martens, Frank Petzold ; Betreuer: Raimar J. Scherer." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://d-nb.info/1144283493/34.
Повний текст джерелаBellodi, Daniele Manfrim. "Influência da inclinação do garfo de mordida do arco facial na montagem do modelo superior em articulador semi-ajustável do tipo arcon e não-arcon." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/58/58131/tde-29102008-180252/.
Повний текст джерелаDuring the process teaching/learning in Dentistry, the occurrence of adverse inclinations of the bite fork concerned to maxillary occlusal plane of patients are current during the face-bow taking performed by students. This study evaluated the influence of the inclinations of bite fork to anterior and posterior related to oclusal plane on mounting of the maxillary cast in arcon and nonarcon semiadjustable articulators. Twenty casts of the maxillary arch from twenty patients were obtained, on which two points were marked: one on the vestibular edge of the right canine and another on the vestibular edge of mesiovestibular cusp of the right first molar. The records in the bite fork were made in three positions: the bite fork parallel to the castss plane occlusal, inclined to anterior and to posterior (both 5°). Each position was repeated five times, being the articulator/face-bow set fixed in special support for photographic register. Each photograph was introduced in Auto CAD program, resulting in lines of references for the collection of five measures (one angular and four linear). The data were subjected to statistical analysis parametric (Analysis of Variance). The results showed no significant statistical difference for inclinations of the bite fork to both anterior and to posterior related to the castss occlusal plane for the arcon and nonarcon semiadjustable articulators. The work suggests that small inclinations of bite fork do not compromise the face-bow taking and its transfer for the semiadjustable articulators.
Hascoët, Nicolas. "Méthodes pour l'interprétation automatique d'images en milieu urbain." Thesis, Evry, Institut national des télécommunications, 2017. http://www.theses.fr/2017TELE0004/document.
Повний текст джерелаThis thesis presents a study for an automatic interpretation of urban images. We propose an application for the retrieval of different landmarks in images representing complex scenes. The main issue here is to differentiate the local information extracted from the key-points of the desired building from all the points extracted within the entire image. Indeed, an urban area image is specific by the public nature of the scene depicted. The object sought to be identified is fused within various other objects that can interfere. First of all, we present a state of the art about image recognition and retrieval methods focusing on local points of interest. Databases that can be used during the phases of experimentation are also exposed in a second chapter. We finally retain the Bag of Words modèle applied to local SIFT descriptors. In a second part, we propose a local data classification approach involving the Support Vector Machine model. The interest shown with this proposed approach is the low number of data required during the training phase of the models. Different training and classification strategies are also discussed. A third step suggests the addition of a geometric correction on the classification obtained previously. We thus obtain a classification not only for the local information but also for the visual information allowing thereby a geometric consistency of the points of interest. Finally, a last chapter presents the experimental results obtained, in particular involving images of buildings in Paris and Oxford
Baraka, Suleiman. "Etude de l'interactionentre le vent solaire et la magnetosphere de la Terre: Modele theorique et Application sur l'analyse de donnees de l'evenement du Halloween d'octobre 2003." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2007. http://tel.archives-ouvertes.fr/tel-00138416.
Повний текст джерелаReydellet, Itto. "Effet de la rhizosphère du maïs sur la minéralisation brute de l'azote dans un sol ferrugineux tropical (Burkina Faso)." Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL083N.
Повний текст джерелаLoguercio, Salvatore. "Reductionist and Integrative approaches to explore the H.pylori genome." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425099.
Повний текст джерелаGajová, Veronika. "Automatické třídění fotografií podle obsahu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236565.
Повний текст джерелаSingla, Swati. "Honest Majority and Beyond: Efficient Secure Computation over Small Population." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/5051.
Повний текст джерелаKalaidjian, Alex. "Automated Landscape Painting in the Style of Bob Ross." Thesis, 2007. http://hdl.handle.net/10012/2761.
Повний текст джерелаJordaan, Ian Jacques. "Ultimate loads and modes of failure for circular-arc bow girders." Thesis, 2015. http://hdl.handle.net/10539/17482.
Повний текст джерелаShabani, B. "The effects of tunnel height and centre bow length on motions and slam loads in large wave piercing catamarans." Thesis, 2017. https://eprints.utas.edu.au/23923/1/Shabani_whole_thesis.pdf.
Повний текст джерелаJelínek, Karel. "Dynamika okolozemní rázové vlny a magnetopauzy." Doctoral thesis, 2012. http://www.nusl.cz/ntk/nusl-309848.
Повний текст джерелаChen, Guan-Jhih, and 陳冠智. "Action Segmentation and Recognition Based on Bag of Visual Words Model (BOVW) Using Self-Growing and Self-Organized Neural Gas (SGONG) Clustering." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/68280876805927076117.
Повний текст джерела國立東華大學
資訊工程學系
104
Nowadays recording and sharing the videos has become a trend in people life. Besides keeping the videos in memory of the life, information extraction of videos is useful in diverse applications. Action recognition and segmentation are important techniques in the field of computer vision. We propose an action segmentation system which can segment the video into a number of video shots according to the action the actor performs within the video. .At the same time, the proposed system also recognizes the action class of those segmented shots. Our system estimates the action number of the video by using the distribution of visual word vectors without any predefine information and adjust the window step size automatically instead of manual selection. Moreover, we adopt the BOVW with SGONG cluster method to construct the word dictionary of action to recognize the video shots. The experimental results demonstrate the performance of our segmentation method. Our system has the segmentation precision rate around 94.2% and recognition rate 90%. The results show that the performance is better than previous similar works.
Silva, Francisco António Coelho e. "A qualitative approach to risk assessment and control in engineered nanoparticles occupational exposure." Doctoral thesis, 2016. http://hdl.handle.net/1822/41863.
Повний текст джерелаThe existing research effort and common use of nanomaterials, that are an opportunity for economic growth, pose health and safety problems. The research on the nanoparticles health effects performed during the last decade shows the possible harmfulness of several nanoparticles, including those already present in everyday use products, thus worker’s health and safety are critical to the development of nanotechnology applications. Despite the increasing knowledge in the nanotoxicology field and occupational safety and hygiene, the uncertainties related to exposure to nanoparticles and related effects are important. Qualitative risk assessment methods and design based approaches are considered to be useful when dealing with those uncertainties and their improvement relevant research issues. This work included, among other things, three individualized, although related, studies. In the first one, the exposure to TiO2 nanoparticles risk was assessed in a research laboratory using a quantitative exposure method and qualitative risk assessment methods. It was found that results from direct-reading Condensation Particle Counter (CPC) equipment and the CB Nanotool seem to be related and aligned, while the results obtained from the use of the Stofenmanager Nano seem to indicate a higher risk level. The main objective of the second study was to analyse and compare different qualitative risk assessment methods during the production of polymer mortars with nanomaterials. It was verified that the different methods applied also produce different final results. Accordingly, it is necessary to improve the use of qualitative methods by defining narrow criteria for the methods selection for each assessed situation, bearing in mind that the uncertainties are also a relevant factor when dealing with the risk related to nanotechnologies. The third study described the application of the Systematic Design Analysis Approach based on the hazard process model (bow-tie), as well as design analysis of the production process, during a development project to produce a new type of ceramic tile with photocatalytic properties. Applying Systematic Design Analysis Approach to the production process, made it possible to identify the emission and exposure scenarios and the related barriers based on the different technological options of the production process. The intervention model proposed will allow occupational safety and hygiene to be integrated into the new production processes development projects that will involve a multidisciplinary team. The current thesis aims to contribute to the improvement of occupational risk assessment and risk control in nanotechnologies, contributing to improve the use of qualitative risk assessment methods by drawing the attention for the importance of the information available on the nanomaterials and the differences obtained by using different methods for the same task and discussing possible ways to obtain more reliable results. The obtained results also shown that, when using a design-based approach, it is possible to reduce risks for workers in the workplace, by changing the production process, reducing or eliminating nanoparticles emission and consequently reducing workers’ exposure.
O esforço atual de investigação e o uso comum de nanomateriais, sendo uma oportunidade para o crescimento económico, colocam problemas para a segurança e saúde. A investigação sobre os efeitos das nanopartículas para a saúde realizada durante a última década mostra a possível nocividade de várias nanopartículas, incluindo aquelas incluídas em produtos utilizados no dia-adia. Assim, a segurança e saúde dos trabalhadores são críticas para o desenvolvimento de novas aplicações da nanotecnologia. Apesar do crescente conhecimento no campo da nanotoxicologia e na segurança e saúde ocupacional, são importantes as incertezas associadas com a exposição a nanopartículas e os efeitos relacionados O recurso a métodos de avaliação de risco qualitativos e abordagens baseadas no design é considerado útil para lidar com estas incertezas e a sua melhoria tema relevante de investigação. O presente trabalho incluiu, entre outras coisas, três estudos individualizados, no entanto interrelacionados. No primeiro estudo, é avaliado o risco de exposição a nanopartículas de TiO2 num laboratório de investigação, utilizando um método quantitativo de avaliação da exposição e métodos qualitativos de avaliação do risco. Verificou-se que os resultados do equipamento de leitura direta Condensation Particle Counter e o CB Nanotool parecem estar relacionados e alinhados, enquanto os resultados obtidos com o método Stofenmanager Nano apontam para um nível de risco mais elevado. O objetivo principal do segundo estudo era analisar e comparar diferentes métodos qualitativos de avaliação do risco durante a produção de argamassas poliméricas contendo nanomateriais. Verificou-se que os diferentes métodos aplicados também produzem diferentes resultados. Assim, é necessário melhorar a utilização destes métodos definindo critérios mais apertados para a sua seleção em função do tipo de situação avaliada, tendo em conta que as incertezas são também um fator relevante quando se interage com o risco relacionado com as nanotecnologias. O terceiro estudo descreve a aplicação do Systematic Design Analysis Design Approach, baseado no modelo do processo de perigo ( bow-tie) e na análise ao design do processo de produção durante um projeto de desenvolvimento para a produção de um novo tipo de ladrilho cerâmico com propriedades fotocatalíticas. Aplicando o Systematic Design Analysis Design Approach ao processo de produção foi possível identificar os cenários de emissão e exposição e as barreiras relacionadas, com base nas diferentes opções tecnológicas do processo de produção. O modelo de intervenção proposto vai permitir que a segurança e higiene ocupacionais sejam integradas nos projetos de desenvolvimento de novos processos de produção, os quais envolvem uma equipa multidisciplinar. A presente tese pretende contribuir para a melhoria da avaliação de riscos ocupacionais e o controlo do risco no sector da nanotecnologia, contribuindo para melhorar a utilização dos métodos qualitativos de avaliação de risco, chamando a atenção para a importância da informação disponível sobre os nanomateriais e as diferenças obtidas quando se utilizam diferentes métodos para a mesma tarefa e discutindo diferentes formas de obter resultados mais fidedignos. Os resultados obtidos demonstram, igualmente, que utilizando uma abordagem baseada no design é possível reduzir os riscos para os trabalhadores no posto de trabalho, alterando o processo de produção, reduzindo ou eliminando a emissão de nanopartículas e, assim, reduzindo a exposição dos trabalhadores.
"Assessing the Tradeoffs of Water Allocation: Design and Application of an Integrated Water Resources Model." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-11-2300.
Повний текст джерелаBabu, B. Sathish. "A Dynamic Security And Authentication System For Mobile Transactions : A Cognitive Agents Based Approach." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/1029.
Повний текст джерелаBabu, B. Sathish. "A Dynamic Security And Authentication System For Mobile Transactions : A Cognitive Agents Based Approach." Thesis, 2009. http://hdl.handle.net/2005/1029.
Повний текст джерелаVenugopal, Thushara. "Sensitivity of Sea Surface Temperature Intraseasonal Oscillation to Diurnal Atmospheric Forcings in an OGCM." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3347.
Повний текст джерелаVenugopal, Thushara. "Sensitivity of Sea Surface Temperature Intraseasonal Oscillation to Diurnal Atmospheric Forcings in an OGCM." Thesis, 2013. http://etd.iisc.ernet.in/2005/3347.
Повний текст джерела