Dissertations / Theses on the topic 'Octets'
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Dong, Kui. "Cess : (after Turandot) : for eight voices, eleven musicians and tape /." May be available electronically:, 1997. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.
Full textGotō, Yo. "Voci lontani for flute, trumpet, percussion, piano, and string quartet, critical essay and score /." connect to online resource. Access restricted to the University of North Texas campus, 2004. http://www.unt.edu/etd/all/Aug2004/goto%5Fyo/index.htm.
Full textBolles, Marita. "What exit /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3049669.
Full textDimoff, Trevor Anthony. "The third impossible thing before breakfast, an octet for saxophone and string quartets." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0013/MQ34935.pdf.
Full textMay, Andrew Emerson Ralph Waldo. "Vanishing : a composition for ensemble and computer /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p9984809.
Full textVita. For flute (piccolo), piano, percussion (1 performer), 2 violas, 2 violoncellos, and computer. Includes technical notes and instructions for performance preceding score.
Thorvaldsdottir, Anna S. Thorvaldsdottir Anna S. Thorvaldsdottir Anna S. Thorvaldsdottir Anna S. "Music and ideas." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p1453657.
Full textAccompanying disc contains sound files of recordings of the musical compositions. The 1st work for 13 instruments; 2nd for 2 oboes, 2 clarinets, 2 bassoons, and 2 horns; 3rd for voice, 6 stethoscopes, and computer which manipulates sounds picked up by the stethoscopes. Title from first page of PDF file (viewed July 11, 2008). Available via ProQuest Digital Dissertations. Includes bibliographical references: P. 137.
Wise, Scott L. "Octet for Winds." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1368025151.
Full textLinhart, Melodie E. "Synaesthetics : for violoncello & octet /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/11306.
Full textFor solo violoncello and octet comprised of piccolo, English horn, clarinet in E♭, contrabassoon, horn in F, tuba, xylophone, and contrbass. Vita. Includes bibliographical references (p. 147).
Norton, Benjamin D. "Little Eichmanns: A Composition for Chamber Octet." UKnowledge, 2013. http://uknowledge.uky.edu/music_etds/18.
Full textLiu, Jiayi. "Display of octrees." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ32491.pdf.
Full textJonker, Jano. "Octet and decuplet baryon masses at finite temperature." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/17518.
Full textOctet and decuplet baryon masses are studied at finite temperature in the framework of finite energy QCD sum rules. In all cases it is found that the mass stays fairly constant over a range of temperatures, increasing sharply near the critical temperature for deconfinement Tc.
Cooke, Ashley Noel. "Lattice QCD study of octet hyperon semi-leptonic decays." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9647.
Full textPavlova, Mariela. "Vérification de programmes en code octet et ses applications." Nice, 2007. http://www.theses.fr/2007NICE4010.
Full textProgram verification techniques based on programming logics and verification condition generators provide a powerful means to reason about programs. Whereas these techniques have very often been employed in the context of high-level languages in order to benefit from their structural nature. It is often required, especially in the context of mobile code, to prove the correctness of compiled programs. Thus it is highly desirable to have a means of bringing the benefits of source code verification to code consumers. We propose a mechanism that allows to transfer evidence from source programs to compiled programs. It builds upon a specification language for bytecode, a verification condition generator that operates on annotated programs, and a compiler that transforms source annotations into bytecode annotations. We show that the verification condition generator is sound, and that the proof bytecode level nearly coincides. We illustrate the benefits of oue framework in two case studies
Behnen, Severin Hilar Behnen Severin Hilar Behnen Severin Hilar Behnen Severin Hilar Behnen Severin Hilar Behnen Severin Hilar Behnen Severin Hilar Behnen Severin Hilar. "Volume I. The construction of motion graphics scores Volume II. Seven motion graphics scores /." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1581435611&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Full textCD-ROM entitled "The motion graphics scores of Severin Behnen" includes the animated scores. Includes bibliographical references (v. 1, leaves 138-142).
Silva, J?lio C?sar Oliveira da. "Problemas de aprendizagem sobre liga??es qu?micas para estudantes de gradua??o." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17672.
Full textThis research aims at identifying the learning problems in newly undergraduate students at university, interpreting the nature and causes of these problems, offering subsidies to overcome these difficulties and enabling a meaningful learning through which students give meaning to their learning. As an object for this work was chosen the theme Chemical Bonds - where were studied the forces between atoms to form molecules, compound ions and ionic crystalline structures - and is characterized as one of the most important subjects of Chemistry. In research, it was used a questionnaire with five open questions, answered by 147 students from the early periods of degrees in Chemistry at Universidade Federal do f Rio Grande do Norte. The answers revealed uncertainty on the part of students, both conceptual and representation, with superficial justifications, always using the octet rule to describe models of chemical bonds. Results suggest that these students had inadequate training in high school and that the examinations for entrance into the ranks were made according to flexible criteria less demanding in terms of knowledge. These observations have led to the conclusion that for future changes, it is necessary for high schools and in the early periods in universities favoring the adoption of pedagogical approaches in context and applying strategies to overcome the teaching of superficial memorization on Chemical Bonds, which probably have applied to the teaching of other subjects of chemistry
Este trabalho teve o objetivo de identificar problemas de aprendizagem em alunos de gradua??o rec?m ingressante na universidade, interpretar a natureza e as causas desses problemas, oferecendo subs?dios para supera??o de tais dificuldades e possibilitando uma aprendizagem significava atrav?s da qual o aluno atribua sentido em seu aprendizado. Para o desenvolvimento desse trabalho foi escolhido o tema Liga??es Qu?micas - onde se estudam as for?as que agem entre os ?tomos para formar mol?culas, ?ons compostos ou estruturas cristalinas i?nicas -, que se caracteriza como um dos mais importantes assuntos da Qu?mica. Para isso, utilizou-se um question?rio com cinco perguntas abertas, respondidas por 147 estudantes dos per?odos iniciais das gradua??es em Qu?mica da Universidade Federal do Rio Grande do Norte. As respostas obtidas revelaram inseguran?a dos estudantes, tanto em termos conceituais quanto de representa??o, com justificativas superficiais, recorrendo sempre ? regra do octeto para descrever modelos de liga??es qu?micas. Os resultados sugerem que esses estudantes tiveram uma forma??o inadequada, no ensino m?dio e que os exames para ingresso nas gradua??es se fizeram segundo crit?rios pouco exigentes em termos de conhecimentos. As observa??es feitas levam ? conclus?o de que, para mudan?as futuras, ? necess?rio que escolas de ensino m?dio e dos per?odos iniciais nas universidades privilegiem a ado??o de m?todos pedag?gicos contextualizados, aplicando estrat?gias para superar o ensino memor?stico e superficial sobre Liga??es Qu?micas, o que, provavelmente, se aplica ao ensino de outros temas da Qu?mica
Verdú, Blasco Pau. "Filamentos elásticos de elastolefina de alta durabilidad obtenidos a partir de copolímeros de bloque de etileno-octeno de baja densidad mediante la tecnología de polimerización por transferencia de cadena para aplicaciones en indumentaria de uso profesional." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/84166.
Full textDue to the lack of stability of elastane based materials against high temperatures and harsh chemicals, e.g. thermofixation and professional wear maintenance, elastic garments with elastane content are not yet fully commercial products. The Dow Chemical Company has recently commercialized a random ethylene-octene copolymer based fiber named Dow XLA™ fiber. Despite its higher temperature resistance as one of the crosslinking effects, its very low melting point, around 50ºC, establishes some limitations in elasticity such in heavy weight and high densely woven fabric cases typically found in professional wear applications. The target for the investigation is to produce block ethyleneoctene copolymer based filaments in which the melting point is supposed to be higher than in random copolymer materials. Different workwear fabrics will be manufactured with yarns containing such elastic filaments. It is supposed these fabrics to show high shrinkage forces even at dyeing and finishing temperatures, (50ºC-120ºC). The goal is to produce fabrics with superior shrinkage performance in order to achieve an excellent elastic power and the final desired fabric weight. Properties such as dimensional stability, stretch and growth ratio, temperature and chemical resistance and durability against industrial laundering should not be affected by the passage of the time. To validate this point these properties will be measured in the fabrics off loom and after the garment cycle life. These fabrics are also supposed to show better thermophysiological and sensorial properties than random copolymer fiber based textiles
Szram, Aleksander Jozef. "Interpreting the Octet '61 by Cornelius Cardew on the piano." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31169.
Full textArts, Faculty of
Music, School of
Graduate
Renteria, Lisa M. "The Bassoon's Essential Role in the Evolution of the Wind Octet: The Serenade in Eb Major K. 375 by Mozart and the Octet for Winds by Stravinsky." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194443.
Full textSilva, António. "Form factors of the baryon octet in the chiral quark soliton model." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972728074.
Full textZola, Wagner Machado Nunan 1961. "Parallel gpu algorithms for compressed implicit octrees." reponame:Repositório Institucional da UFPR, 2015. http://hdl.handle.net/1884/45749.
Full textTese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Exatas, Programa de Pós-Graduação em Informática. Defesa: Curitiba, 10/09/2015
Inclui referências : f. 97-101
Resumo: O algoritmo Barnes-Hut é um método aproximado amplamente usado para na simulação gravitacional de N-Corpos, que envolve a construção e eaminliamento de árvores esparsas a cada passo de simulação e assim reduzindo a complexidade computacional e possibilitando a solução de problemas práticos de grande escala, A natureza irregular desse código de eaminliamento em árvore apresenta desafios interessantes na sua computação em sistemas paralelos. Desafios adicionais ocorrem nesse tipo de padrão de computação paralela quando se deseja utilizar de maneira eficaz a capacidade computacional de arquiteturas de GPUs (processadores gráficos multieore de propósito geral), Oetrees são estruturas de dados que representam de maneira eficiente as informações de dados espaciais em várias áreas tais como computação científica, computação gráfica, processamento de imagens, dentre outras. Nosso enfoque nesse trabalho é de tratar explicitamente os padrões dinâmicos irregulares de acesso a dados em memória com o remapeamento de dados e transformações de lavouts, dependendo das estruturas acessadas. Também é feito o controle explicito, por programa, de fluxos divergentes de execuções em threads. Apresentamos uma nova estrutura de dados compacta para lavouts de oetrees esparsas, bem como algoritmos paralelos para GPUs, tanto para transformações de lavouts como para eaminliamento paralelo usando a técnica de simulação de "warps"-largos (SWW, Simulated Wide-Warps), Os benefícios de nossas técnicas ocorrem devido à transposição do algoritmo de eamin- nhamento na árvore para execução em padrões mais regulares, possibilitando uma melhor adaptação ao modelo GPU paralelo, A estrutura de dados permite explorar localidades de acessos à memória durante os percursos, ao mesmo tempo conservando espaço em memória eaehe ou em memória compartilhada (scratchpad). Desta forma a memória rápida intra-eore pode ser dedicada a acelerar eaminliamentos. Controle divergência de fluxos também é delimitado de maneira algorítmica, impondo uma execução uniforme na maior parte dos segmentos de execução. Nossos experimentos mostram melhoria de desempenho significativa em relação às soluções em GPU mais conhecidas para este algoritmo. Desenvolvemos um novo algoritmo paralelo eficiente que gera diretamente de uma só vez as oetrees implícitas comprimidas, como um método massivamente paralelo. Este método traz uma nova visão para tratar de forma eficiente com a natureza irregular também presente na construção de oetrees esparsas, O algoritmo proposto de geração massivamente paralela de oetrees esparsas tem aplicação imediata em nossa implementação GPU paralela da simulação Barnes-Hut e em outros métodos de N-eorpos, As técnicas e algoritmos propostos nesta tese também poderão ser aplicadas em outros contextos. Palavras-chave: Algoritmo Massivamente Paralelo para Geração de Octrees; Octrees esparsas; Octree implícita; Probleamas de N-Corpos; Barnes-Hut; GPGPIJ; WarpsLargos Simulados em Software; CIJDA; Algoritmo Paralelo irregular; Algoritmos paralelos; Manycore Computing; Acelerador de Computação;
Abstract: The Barnes-Hut algorithm is a widely used approximation method for the N-Body simulation problem, which involves the construction and traversal of sparse trees at each simulation step and thus reducing the complexity to solve large/praetieal problems. The irregular nature of this tree walking code presents interesting challenges for its computation on parallel systems. Additional problems arise in effectively exploiting the processing capacity of GPU architectures. Octrees are data structures that efficiently represent spatial data in many fields such as scientific computing, computer graphics and image processing, among others. In this work we explicitly deal with dynamic irregular patterns in data accesses with data remapping and data transformation, depending on the data structures being accessed, and by controlling the execution flow divergence of threads. We present a new compact data-strueture for sparse octree layouts, and also GPU parallel algorithms for tree transformation and parallel walking using software Simulated Wide-Warps (SWW), Benefits of our techniques are in transposing the tree algorithm to execute regular patterns to match the GPU parallel model. The data structure allows exploring localities during traversals, at the same time conserving space in caches or scratchpad memory. This way fast intra-eore memory can be dedicated to speed up traversals. Control flow divergence is also algorithmically constrained, enforcing a mostly uniform execution of threads. Our experiments show significant performance improvement over the best known GPU solutions to this algorithm. We have developed a novel efficient parallel algorithm that directly generates entire compressed implicit octrees at once, as a massively parallel method. This method brings new insight on how to efficiently deal with the irregular nature of algorithms for constructing sparse octrees. The proposed algorithm has immediate application to our GPU parallel Barnes-Hut implementation and other N-Body methods. We envision that the techniques and algorithms proposed in this dissertation can also be applied in other contexts. Keywords: Massively Parallel Octree Generation Algorithm; Sparse Octrees; Implicit Octree; N-Body; Barnes-Hut; GPGPU; Software Simulated Wide-Warp; CUDA; Irregular Parallel Algorithm; Parallel algorithms; Many core Computing; Accelerator Computing;
Ryan, Timothy Lee. "Device independent perspective volume rendering using octrees." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040251/.
Full textShan, Haifeng. "Structure development in melt spinning, cold drawing and cold compression of poly(ethylene-co-octene) with different octene content." Akron, OH : University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1137341440.
Full text"May, 2006." Title from electronic dissertation title page (viewed 10/11/2006) Advisor, James L. White; Committee members, Avraam I. Isayev, Thein Kyu, Darrell H. Reneker, Shing-Chung "Josh" Wong; Department Chair, Sadhan C. Jana; Dean of the College, Frank N. Kelley; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
Challapalli, Adithya. "Loading Mode Dependent Effective Properties of Octet-truss Lattice Structures Using 3D-Printing." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc799547/.
Full textHermansson, Albin. "View-Dependent Collision Detection and Response Using Octrees." Thesis, Blekinge Tekniska Högskola, Institutionen för kreativa teknologier, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12751.
Full textWood, James J. "A Historical and Analytical Examination of the Stravinsky Octet for Wind Instruments, with a Guide to Performance Preparation of the Two Trumpet Parts." Thesis, connect to online resource, 2007. http://digital.library.unt.edu/permalink/meta-dc-3593.
Full textSystem requirements: Adobe Acrobat Reader. Accompanied by recitals, recorded Mar. 22, 1999, Nov. 29, 1999, and Sept. 11, 2006. Includes bibliographical references (p. 52-53).
Hasert, Manuel [Verfasser]. "Multi-scale Lattice Boltzmann simulations on distributed octrees / Manuel Hasert." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1051504376/34.
Full textWilhelmsen, Audun. "Efficient Ray Tracing of Sparse Voxel Octrees on an FPGA." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19415.
Full textSharma, Amit. "Catalytic Reaction Engineering using Ionic liquids : Hydroformylation of 1-Octene." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT015G/document.
Full textA chemical reaction engineering approach is applied to the hydroformylation of 1-octene using lipophobic complexes of rhodium prepared from Rh(CO)2(acac) in ionic liquid phase ([Bmim] [PF6]) or in the ionic liquid phase supported on silica. As the reaction is controlled by the concentration of the reagents in the catalytic ionic liquid phase, the concentrations of both gases (H2 and CO) and also of 1-octene are measured at various temperatures and pressures as an initial step. Different methods are used for the measurement of the olefin solubility inside the ionic liquid: thermogravimetry and multiple headspace chromatography, in the presence of solvent (decane) and reaction product (nonanal). The gas-liquid mass transfer, which can be a rate controlling step in these viscous media, is also measured by a dynamic technique of pressure variation, both in case of pure ionic liquid and biphasic mixture of ionic liquid and organic phase, in an autoclave reactor with self induced stirrer. A general correlation is proposed showing the strong influence of the agitation speed. A kinetic study is realized in no gas–liquid nor organic–ionic liquid mass transfer limiting conditions (chemical regime) with TPPTS as ligand. The usual hydroformylation behaviour is observed, as already found in organic phase or in aqueous phase: order close to 1 for H2, inhibition by CO at large concentration, and high activation energy. If the turnover frequency is suitable (70 h-1), the n/iso ratio is very low which is not favourable to this catalytic system. Some experimental results also allow a first analysis of biphasic catalysis with sulfoxantphos ligand and of ionic liquid phase supported catalysis with TPPTS ligand
Bardili, Nicolas. "Strömungssimulation inkompressibler Fluide auf Quad- bzw. Octrees mittels finiter Volumen." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10424235.
Full textSchütte, Maya. "Chirale Organoarsenverbindungen für die Oxidationskatalyse." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961931027.
Full textMöre, Tomas, and Gustav Schneider. "Comparing 3D-Clipmaps and Sparse Voxel Octrees for voxelbased cone tracing." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230105.
Full textVoxel based cone tracing är ett lovande tillvägagångssätt för att ap-proximera global belysning för realtidsapplikationer. Denna teknik an-vänder ett voxelfält som approximerar den ursprungliga scenen för atthämta den nödvändiga ljusinformationen under sampling. Det enk-laste tillvägagångssätt för att skapa ett voxelfält är att använda en 3D-textur. Eftersom detta kräver för mycket GPU-minne för större scenermåste alternativa datastrukturer tas i hänsyn. Denna avhandling jäm-för två skenbart lämpliga datastrukturer 3D-Clipmaps och Sparse vox-el octrees. För att jämföra de två strukturerna implementerar vi demmed OpenGL och C++. Vi använder sedan den förbättrade Sponza-modellen med insatta dynamiska objekt att jämföra skillnaderna mel-lan de två metoderna. Båda datastrukturerna har sina fördelar ochnackdelar. Vår slutsats är att Clipmaps verkar vara det mest praktiskatillvägagångssättet för reella tillämpningar.
Reynders, Frederik Jakobus Wilhelm. "Gas-limited hydrogenation of 1-octene in a packed bed reactor." Diss., University of Pretoria, 2011. http://hdl.handle.net/2263/26555.
Full textWang, Youyou DeSouza Guilherme. "A compact representation for 3D animation using octrees and affine transformation." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6645.
Full textSigwinta, Mawande. "Ethylene-1-octene elastomers: Molecular structure characterization by advanced analytical methods." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/2993.
Full textPolyolefin elastomers are non-crystallising materials which are challenging to characterize with conventional crystallization-based techniques such as crystallization analysis fractionation (CRYSTAF) and temperature rising elution fractionation (TREF). However, interaction chromatography (IC) offers an alternative pathway for the chemical composition distribution definition of these materials. This work details the development of comprehensive characterization methods of linear low-density polyethylene (LLDPE) elastomers. In the first part of this work, four preparative fractionation methods namely, solution crystallization fraction (p-SCF), preparative temperature rising elution fractionation (p-TREF), modified p-TREF, and preparative molar mass fractionation (p-MMF) were compared for the analysis of an LLDPE elastomer with 12.8 mol% 1-octene content. While p-TREF showed the coelution effect at low elution temperatures, sufficient amount of fractions with narrow molar mass dispersity were obtained with the p-MMF method. Despite the limitations with the TREF method, it was demonstrated that both fractionation techniques provide detailed information on the complex nature of the LLDPE elastomer molecular structure after subsequent analysis with several other offline techniques such as solvent gradient interaction chromatography (SGIC). The modified p-TREF method also produced fractions with interestingly narrow dispersities and showed significant molar mass influence on its fractionation mechanism. The molar mass influence on the collected fractions was also observed with the p-SCF method, and both methods are a subject for future study. It was shown that when using a binary solvent mixture in which one of the solvents limits the solubility of the polyolefin chains, the separation is molar mass dependent even if column temperature is the active variable. In the second part of this work, four LLDPE copolymers with increasing amounts of 1-octene but similar molar masses were utilized to investigate the influence of chemical composition on the p-MMF technique. For all four LLDPE copolymers, eight fractions with decreasing molar masses were collected at different non-solvent/solvent ratios as the amount of non-solvent in the non-solvent/solvent mixture was increased. It was shown that chemical composition of these samples was independent of the fraction number, but was influenced by the average chemical composition of their respective bulk sample. Consequently, it was concluded that the molecular structure complexity of the four samples decreased with increasing 1-octene content. Finally, three commercial LLDPE elastomers with high 1-octene contents were comprehensively studied. Preparative molar mass fractionation was employed to obtain fractions which were further analysed using size exclusion chromatography (SEC) and differential scanning calorimetry (DSC). It was found that at bulk level, the samples appear to exhibit microstructural homogeneity, however, their respective p-MMF fractions exhibit multimodal chemical composition distributions. Furthermore, the p-MMF fractions showed an increase in their chemical composition heterogeneity as the molar mass decreased. Ultimately, it was concluded that the p-MMF method is the most suitable technique that provides in-depth insight on the molecular structure complexity of LLDPE elastomers.
Taddeo, Leandro da Silva. "Detecção de colisão utilizando grids e octrees esféricas para ambientes gráficos interativos." Universidade de Fortaleza, 2005. http://dspace.unifor.br/handle/tede/70145.
Full textInteractive graphical environments are becoming more present in our lives. Despite of the technological advances in the computing area for the development of these environments, there are still many challenges to overcome in order to simulate the world where we live in a realistic way. The collision detection treatment among 3D objects is a typical example. It still corresponds to one of the bottlenecks of the interactive graphical environments, whose control is basic for the production of convincing simulated results. This work presents some efficient collision detection methods (broad and narrow phases, using grids and spherical octrees, respectively), for the development of interactive graphical environments. A significative number of experiments was carried out, in which we varied the number of objects in the scenario, the geometry, the dimensions and the degree of complexity of the objects, as well as the level of detail of them. The obtained results, evaluated by means of subjective and usability metrics, show that the implemented detection methods achieve high performance and precision during the collision tests. Consequently, this guarantees the responsiveness success of the interactive graphical environment, as well as its robustness for a considerable number of complex and dynamic objects (200) represented simultaneously.
Ambientes gráficos interativos estão se tornando mais presentes em nossas vidas. Apesar dos avanços tecnológicos na área de computação para o desenvolvimento destes ambientes, ainda há muitos desafios a serem vencidos com o objetivo de simular o mundo em que vivemos de forma realista. O tratamento da detecção de colisão entre objetos 3D é um típico exemplo. Corresponde, ainda hoje, a um dos gargalos dos ambientes gráficos interativos, cujo controle é fundamental para a geração de resultados de simulação convincentes. Este trabalho apresenta alguns métodos eficientes de detecção de colisão (broad e narrow phases, utilizando grids e octrees esféricas, respectivamente), para o desenvolvimento de ambientes gráficos interativos. Um número significativo de experimentos foi conduzido, variando-se o número de objetos colidentes no cenário, as geometrias, as dimensões e o grau de complexidade dos objetos, bem como o nível de detalhe dos mesmos. Os resultados obtidos, avaliados por meio de métricas subjetivas e de usabilidade, mostram que os métodos de detecção implementados atingem alto desempenho e precisão durante os testes de colisão. Conseqüentemente, garantindo com sucesso o tempo de resposta do ambiente gráfico interativo, bem como a sua robustez para um número considerável de objetos complexos e dinâmicos (200) representados simultaneamente. Palavras Chave: Detecção de Colisão, octrees esféricas, malhas regulares (grids), ambientes gráficos interativos.
Arancibia, Román Nicolás Ignacio. "Modelamiento de un Generador de Mallas Basado en Octrees, Usando Patrones de Diseño." Tesis, Universidad de Chile, 2007. http://www.repositorio.uchile.cl/handle/2250/104718.
Full textYang, Sha. "Crystallization, Melting Behavior, Physical Properties, and Physical Aging of Ethylene/1-Octene Copolymers." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/72985.
Full textMaster of Science
Yamazaki, Daisuke. "Structural and mechanistic studies on cyclic π-conjugated systems annelated with bicyclo〔2.2.2〕octene units." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136242.
Full textPang, Law Ma Rome Anne. "Beneath the Dancing Moon: A Composition for Woodwind and Percussion Ensemble." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc501224/.
Full textWhite, Bryan M. "Rotaxanated Polymers: I. Synthesis and Purification of Cyclic Polydimethylsiloxane II. Synthesis of Poly[octene-pseudorotaxa-(a-cyclodextrin)]." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5136.
Full textGong, Zhenxin. "Continuous flow homogeneous hydroformylation of 1-octene over supported ionic liquid phase rhodium catalysts using supercritical CO₂." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1877.
Full textRamarou, Diteboho Selina. "Alkylated PTA platforms for mono- and polynuclear pre-catalysts for the aqueous biphasic hydroformylation of 1-octene." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29206.
Full textKlimach, Harald Verfasser], Sabine P. [Akademischer Betreuer] Roller, Marek [Akademischer Betreuer] [Behr, and Michael [Akademischer Betreuer] Resch. "Parallel multi-scale simulations with octrees and coupled applications / Harald Klimach ; Sabine P. Roller, Marek Behr, Michael Resch." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130402967/34.
Full textBrittz, Geertruida. "Olefin skeletal isomerization of n-butene, n-hexene and n-octene using alumina-based catalysts / Geertruida (Trudie) Brittz." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8729.
Full textThesis (MSc (Chemistry))--North-West University, Potchefstroom Campus, 2013
Sokolovicz, Yuri Clemente Andrade. "Reações em tandem de isomerização/metátese de 1-octeno como substrato modelo e de ésteres de óleos vegetais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/129743.
Full textThe depletion of fossil resources combined with pollution from non-renewable sources clamoring for new sustainable routes. Important component of biomass are vegetable oils that can supply not only the energy, but also chemicals and materials demand. The isomerization and metathesis of vegetable oils esters form olefins, esters and diesters with different carbon chain lengths and may be used for producing of polymers, diesel, oils, detergents, surface coatings, pharmaceuticals, cosmetics or modified for a wide variety of other compounds. In this work, initially tandem isomerization/metathesis reactions of 1-octene as a model substrate were studied. Two systems were used for the capture of volatile compounds in isomerization/metathesis reactions. The system B (open system) showed a better product distribution for high-molecular weight olefins and best system for the capture of low molecular weight (“light”) olefins in comparison with system A (reduced pressure). The catalyst compatibility and product distribution obtained by combining three olefin metathesis catalysts Hoveyda Grubbs 1st generation - HG1, Hoveyda Grubbs 2nd generation - HG2 and Umicore M42 - UM42 and two olefin isomerization catalysts bromotri-tert-butylphosphine-palladium(I)dimer - PdBr e chlorohydridocarbonyltris(triphenylphosphine)-ruthenium(II) - RuH, in which the catalyst combinations HG2 / RuH, UM42 / PdBr, HG2 / PdBr and HG2 / PdBr operating in a Tandem fashion resulted in a mixture of products exhibiting an equilibrium distribution. However, when the combination HG1 / RuH was used the equilibrium did not occur, likely due to deactivation of the RuH isomerization catalyst by the dissociated phosphine from the metathesis catalyst HG1. Tandem isomerization/metathesis reactions of transesterified olive and sunflower oils were investigated. Three combinations of catalysts HG2 / RuH, UM42 / RuH and UM42 / PdBr showed different products distributions of olefins, esters and diesters. The formation of three equilibrium distributions could be observed when transesterified olive oil was used as substrate. When the substrate was transesterified sunflower oil, no equilibrium mixture was obtained due to the formation of conjugated double bonds. The olefin metathesis catalyst UM42 requires activation, which occurred in the presence of both isomerization catalysts RuH and PdBr. Two mechanistic pathways have been proposed to explain these observations. The activation of UM42 by RuH or PdBr was explained through the formation of the complexes B and C or B and E, respectively. The 14 electron complex B is suggested to be metathesis active, while the complexes C and E may form species able to perform olefin isomerization.
Sokolovicz, Yuri C. A. "Reações em tandem de isomerização/metátese de 1-octeno como substrato modelo e de ésteres de óleos vegetais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/129743.
Full textThe depletion of fossil resources combined with pollution from non-renewable sources clamoring for new sustainable routes. Important component of biomass are vegetable oils that can supply not only the energy, but also chemicals and materials demand. The isomerization and metathesis of vegetable oils esters form olefins, esters and diesters with different carbon chain lengths and may be used for producing of polymers, diesel, oils, detergents, surface coatings, pharmaceuticals, cosmetics or modified for a wide variety of other compounds. In this work, initially tandem isomerization/metathesis reactions of 1-octene as a model substrate were studied. Two systems were used for the capture of volatile compounds in isomerization/metathesis reactions. The system B (open system) showed a better product distribution for high-molecular weight olefins and best system for the capture of low molecular weight (“light”) olefins in comparison with system A (reduced pressure). The catalyst compatibility and product distribution obtained by combining three olefin metathesis catalysts Hoveyda Grubbs 1st generation - HG1, Hoveyda Grubbs 2nd generation - HG2 and Umicore M42 - UM42 and two olefin isomerization catalysts bromotri-tert-butylphosphine-palladium(I)dimer - PdBr e chlorohydridocarbonyltris(triphenylphosphine)-ruthenium(II) - RuH, in which the catalyst combinations HG2 / RuH, UM42 / PdBr, HG2 / PdBr and HG2 / PdBr operating in a Tandem fashion resulted in a mixture of products exhibiting an equilibrium distribution. However, when the combination HG1 / RuH was used the equilibrium did not occur, likely due to deactivation of the RuH isomerization catalyst by the dissociated phosphine from the metathesis catalyst HG1. Tandem isomerization/metathesis reactions of transesterified olive and sunflower oils were investigated. Three combinations of catalysts HG2 / RuH, UM42 / RuH and UM42 / PdBr showed different products distributions of olefins, esters and diesters. The formation of three equilibrium distributions could be observed when transesterified olive oil was used as substrate. When the substrate was transesterified sunflower oil, no equilibrium mixture was obtained due to the formation of conjugated double bonds. The olefin metathesis catalyst UM42 requires activation, which occurred in the presence of both isomerization catalysts RuH and PdBr. Two mechanistic pathways have been proposed to explain these observations. The activation of UM42 by RuH or PdBr was explained through the formation of the complexes B and C or B and E, respectively. The 14 electron complex B is suggested to be metathesis active, while the complexes C and E may form species able to perform olefin isomerization.
Chowdhury, Rajarshi Roy. "Higher-order adaptive methods for fluid-dynamics." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS298.
Full textFluids (gases and liquids) exist everywhere around us. Water covers 70% of the Earth’s crust and gases like nitrogen and oxygen surround the planet. The field of fluid dynamics involves the study of liquids or gases in motion. The equations which govern the motion of fluids viz. The Navier–Stokes equations, are complex non-linear partial differential equations which do not have closed-form analytical solutions for most problems of practical interest. However, using numerical schemes, these partial differential equations of continuous variables can be transformed into huge algebraic systems of discrete variables and solved using high-performance computers. A numerical method solved on a computing device will introduce errors in the final solution, will require a given amount of computational resource like memory and processor, and will take a finite amount of time to reach a solution. Thus the development of more accurate and faster algorithms to numerically model the equations of fluid dynamics is a constantly evolving research field. The present document is dedicated to both the study of existing lower-order numerical algorithms as well as either the implementation of existing or development and implementation of new higher-order algorithms, relevant for solving the incompressible Navier–Stokes equations. The entire work has been carried out on the adaptive Cartesian solver for fluid equations Basilisk. We specifically research solvers for convection–diffusion, Poisson–Helmholtz equations, time-marching schemes, and for the shallow-water equations. We look at adaptive mesh methods for solving these equations and taking the Basilisk implementation of the adaptive wavelet algorithm on a quad-octrees as our starting point, we build a novel higher-order adaptive scheme. A recurring theme throughout this thesis is the comparison in accuracy and computing performance of different higher-order schemes when compared to their lower-order counterparts
Kumar, Amit. "Morphology, Crystallization and Melting Behavior of Statistical Copolymers of Propylene with Ethylene, 1-Butene, 1-Hexene and 1-Octene." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33563.
Full textMaster of Science
Frangov, Stoyan [Verfasser]. "Morphologie und Deformationsverhalten von Blends aus Polyethylen hoher Dichte und Ethylen-1-Octen-Copolymeren / Stoyan Frangov." Aachen : Shaker, 2005. http://d-nb.info/1181610028/34.
Full textMcShane, P. M. "Optimization of the morphological, mechanical and rheological properties of novel polypropylene/ethylene-octene copolymer blends for automotive fuel line protection applications." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268405.
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