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Sanagiotti, Edmilson Rogério. "Estudo comparativo entre a modelagem com a transformação dq0 e a modelagem por vetores espirais para o motor de indução bifásico simétrico." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-23072007-105956/.
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O presente trabalho é um estudo comparativo entre a modelagem de motores de indução bifásicos simétricos com o uso da transformação dq0, que é uma modelagem matemática clássica na análise dos motores de indução bifásicos e a modelagem através da teoria do vetor espiral, proposta na década de 80 para os motores de indução trifásicos. A modelagem clássica é apresentada detalhadamente, bem como a modelagem por vetores espirais. Foram realizadas simulações para comparar os resultados entre as diferentes abordagens.This work is a comparative study between the classic modeling using dq0 transformation and the spiral vector theory applied to study symmetrical two-phase induction machine. The spiral vector theory was proposed by Dr. Sakae Yamamura to study electrical machines in the middle of 1980s. To compare both types of modeling, simulations were performed to solve differential equations.
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Schonardie, Mateus Felzke. "Sistema fotovoltaico trifásico conectado à rede com controle de potência ativa e reativa utilizando transformada dq0." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/94955.
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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2011Made available in DSpace on 2012-10-25T18:30:55Z (GMT). No. of bitstreams: 1 298270.pdf: 6269976 bytes, checksum: 4402b2b1598e867162ee11c5e57ee7a1 (MD5)
Este trabalho apresenta um sistema trifásico de geração de energia fotovoltaica conectada à rede com fator de potência unitário para qualquer situação de radiação solar. É apresentada a modelagem do conversor PWM e a estratégia de controle usando a Transformada dq0. O sistema opera como um filtro ativo capaz de compensar as componentes harmônicas e a potência reativa, gerada pelas cargas conectadas ao sistema. Uma técnica de grampeamento da tensão de entrada é proposta para controlar a potência entre rede e sistema fotovoltaico, prevendo a operação do sistema fotovoltaico próximo ao ponto de potência máxima. Resultados de simulação e experimentais são apresentados para validar a metodologia.
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Scholtz, Juliano Sadi. "Projeto de um retificador trifásico regenerativo com elevado fator de potência e controle em coordenadas dq0 implementado no DSP TMS320F2812." Universidade do Estado de Santa Catarina, 2006. http://tede.udesc.br/handle/handle/1881.
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Previous issue date: 2006-05-19Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
This work presents the design of a regenerative three-phase switching rectifier with high power factor and control in dq0 coordinates implemented on DSP TMS320F2812 of Texas InstrumentsTM. The controls have used the Clark and Park transformations and the bilinear equation of Tustin, so that the design of the digitals controllers, carried through on the frequency domain, became it significantly simple. The DSP of last generation used allow the programming in a high level language. It can propitiate that the routines be understood, reused and or improved without great efforts. In general way, this will facilitate the sharing of the information for future designs. The main advantages associates are: robust control, excellent regulation of the DC voltage, energy regeneration, low harmonic distortion in the input currents and high power factor.
Este trabalho apresenta o projeto de um retificador trifásico regenerativo com elevado fator de potência e controle em coordenadas dq0 implementado no DSP TMS320F2812 da Texas InstrumentsTM. No controle foram utilizadas as transformações de Clark e Park e a equação bilinear de Tustin, de sorte que o projeto dos controladores digitais, realizado no domínio da freqüência, tornou-se significativamente simples. As equações de controle consideraram também todos os ganhos reais oriundos da implementação. Desta forma, os sistemas obtiveram boa representação física. O DSP de última geração utilizado permite que a programação seja realizada em linguagem de alto nível, o que pode propiciar que as rotinas sejam entendidas, reutilizadas e ou melhoradas sem grandes esforços. Até certo ponto isto facilitará o compartilhamento das informações para projetos futuros. As principais vantagens associadas são: controle robusto, excelente regulação da tensão do barramento CC, regeneração de energia, baixa distorção harmônica nas correntes de entrada e elevado fator de potência.
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Abreu, Pedro José Correia Miguel. "Carregador de baterias trifásico de 5kW com fator de potência unitário." Master's thesis, Escola Superior de Tecnologia do Instituto Politécnico de Setúbal, 2012. http://hdl.handle.net/10400.26/4366.
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Dissertação de Mestrado em Engenharia Electrotécnica e computadoresFoi elaborada a construção de um protótipo de um carregador de baterias de 5kW baseado num retificador. O controlo é feito através do modo de deslizamento. Nesta dissertação são apresentados todos os cálculos de dimensionamento, testes efetuados e resultados experi-mentais. A aproximação do fator de potência unitário é atingida em simulação de MATLAB. É descrito o modo como o protótipo atinge essa aproximação.
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Axelsson, Mikael. "Modellbygge av mekaniksystem och riktmotorer i stridsvagn 122." Thesis, Linköping University, Department of Electrical Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1420.
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This master thesis is one part of a project, called “StabSim”, with the purpose to develop a simulation model for the align and stabilisation system in main battle tank 122. The origin of this project is that it should be possible to make control analysis without risking any hardware. Besides that it will be easy to change components in order to investigate the behaviour of the system.
The report includes modelling of tower and weapon mechanics and also the modelling of the synchronous motors, which control these. There is also a discussion whether the model can be reduced in order to receive a less stiff system.
To get a proper system the models needs many parameters. Some of them are unknown and that’s why this report includes methods to estimate them. Measurements have then been done on a main battle tank, and requisite parameters have been estimated.
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Dušek, Jiří. "Řízení stroje s PM v d-q osách při použití Matlab/Simulink." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218789.
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Tato práce se zabývá synchronním motorem s permanentními magnety na rotoru (PMSM), jeho modelováním a návrhu regulační struktury. V práci jsou uvedeny způsoby a výhody použití permanentních magnetů v elektrických motorech. Dále se práce zabývá transformací třífázové soustavy do dq0. Pomocí Parkovy transformace jsou v práci odvozeny rovnice stroje v dq0 souřadnicovém systému a vytvořeny náhradní schémata stroje v dq osách. Rovnice i schémata zahrnují jak ztráty v mědi, tak ztráty v železe. Náhradní schémata jsou popsány elektrickými a mechanickými rovnicemi a následně překresleny do grafické podoby v programu Matlab Simulink. Vytvořeny jsou dva modely PMSM, jeden s uvažováním ztrát v železe a druhý bez těchto ztrát. Pro oba dva modely je zde popsán postup návrhu regulátorů proudu a otáček. Pro model, u kterého jsou uvažovány ztráty v železe je navíc použito více druhů řídicích strategií a tyto strategie jsou mezi sebou navzájem porovnány.
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Pitka, Andreas Benjamin [Verfasser]. "D0-D̄0-Mischung im Zerfall D0 → Ks π+ π̄ am P̄ANDA-Experiment / Andreas Benjamin Pitka." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/1079139354/34.
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Goncharenko, Roman, Juraj Hledik, and Roberto Pinto. "The dark side of stress tests: Negative effects of information disclosure." Elsevier, 2018. http://dx.doi.org/10.1016/j.jfs.2018.05.003.
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This paper studies the effect of information disclosure on banks' portfolio risk. We cast a simple banking system into a general equilibrium model with trading frictions. We find that the information disclosure lowers the expected risk-adjusted profits for a non-negligible fraction of banks. The magnitude of this effect depends on the structure of the banking system and, alarmingly, it is more pronounced for systemically important institutions. We connect these theoretical findings to the stress test procedure, where bank information is disclosed by the regulator. The 2011 and 2014 stress tests are used in an empirical study to further support our theoretical results.
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Almeida, Fernanda Coutinho de. "Prevalência dos genes HLA-DQ2 e DQ8, predisponentes para doença celíaca, em recém-nascidos do Distrito Federal." reponame:Repositório Institucional da UnB, 2014. http://repositorio.unb.br/handle/10482/15688.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Medicina, Programa de Pós-Graduação em Ciências Médicas, 2014.Submitted by Alaíde Gonçalves dos Santos (alaide@unb.br) on 2014-05-26T13:03:22Z No. of bitstreams: 1 2014_FernandaCoutinhodeAlmeida.pdf: 1469747 bytes, checksum: 5ae1caa6e961a509c5101fa2738e9f6a (MD5)
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A doença celíaca (DC) é uma enteropatia imuno-mediada caracterizada por inflamação crônica do intestino delgado, que resulta em atrofia das vilosidades intestinais, hiperplasia de criptas e infiltração linfocitária. A doença ocorre em indivíduos geneticamente predispostos pela presença dos genes do sistema HLA DQ2 e/ou DQ8. Esses genes codificam as moléculas MHC de classe II presentes nas células apresentadoras de antígenos, que fazem apresentação antigênica aos linfócitos T, iniciando a resposta imunitária inflamatória presente na DC. Os genes HLA DQ2 e DQ8 são responsáveis por 40% da suscetibilidade genética da doença celíaca (DC), sua prevalência tem mostrado variações em diferentes regiões do mundo, e até o momento não foi determinada na população brasileira. Com base nestes dados, o presente estudo pretende estimar a frequência dos alelos HLA predisponentes para DC em um grupo populacional de recém-nascidos brasileiros. Os genes HLA-DQ2 e DQ8 foram tipados em 329 recém-nascidos pela técnica qPCR e os resultados foram confirmados por um kit comercial que utiliza a metodologia PCR-SSP. Os resultados revelaram uma prevalência de 33,44% para os heterodímeros DQ2 e DQ8, semelhante aos obtidos em estudos realizados nos países europeus. Em uma segunda análise dos dados, quando a presença de pelo menos um dos alelos predisponentes para DC foi considerado, observamos uma porcentagem aumentada dos alelos de alto risco para desenvolvimento de DC nos recém-nascidos brasileiros. Diante destes achados é possível concluir que os dados encontrados na população brasileira são semelhantes aos encontrados nos países europeus, embora as características populacionais sejam distintas, e que a metodologia empregada, e que foi validada e confirmada é confiável e poderá ser reproduzida facilmente em novos estudos. _______________________________________________________________________________________ ABSTRACT
Celiac disease (DC) is an immune-mediated enteropathy characterized by chronic inflammation of the small bowel which results in intestinal villi atrophy, crypt hyperplasia and lymphocyte infiltration. This disease only affects genetic susceptible individuals who carry the genes that integrate the HLA DQ2 and/or DQ8 system. These genes code for MHC class II molecules present in antigen-presenting cells, which will interact with T-lymphocytes leading to the characteristic inflammatory response of DC. Forty percent of the genetic susceptibility to DC is associated with class II HLA-DQ2 and -DQ8 genotypes. The prevalence of these genes has shown significant variations among different world regions and has not been previously determined among the Brazilian population. The aim of this study was to estimate the prevalence of celiac disease HLA-predisposing alleles in Brazilian newborns. DQ2 and DQ8 genes were typed in 329 newborns using qPCR and the results were confirmed by a PCR-SSP commercial kit. The prevalence of DQ2 and/or DQ8 heterodimers was 33.44%, which is similar to the results obtained in European screening studies. However, if only considering the presence of at least one of the CD predisposing alleles, an increased percentage of high-risk alleles could be observed among the Brazilian newborns. Analyzing our results, we could conclude that, the prevalence of DQ2 and/or DQ8 heterodimers in our population is similar to that observed in European population screening studies although the characteristics of both populations highly differ and that the applied technic proved to be reliable and can be easily reproduced in further studies.
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SÁ, André Luiz Alves de. "Utilização de células de trofoblasto de embriões partenogenéticos na descrição de haplótipos de BoLA-DRB3-DQA-DQB." Universidade Federal do Pará, 2015. http://repositorio.ufpa.br/jspui/handle/2011/8406.
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A perspectiva de aumentar a produtividade do gado bovino a partir da aplicação de melhoramento genético do rebanho é cada vez mais estudada. Dentre as regiões genômicas mais estudadas e promissoras têm-se o Complexo Principal de Histocompatibilidade (MHC), já que este reúne genes importantes na resposta imunológica do animal, sendo possível selecionar marcadores nesta região para maior resistência a enfermidades e, portanto, maior produção pecuária. A diversidade do MHC bovino, conhecido como BoLA (Bovine Leukocyte Antigens), foi estudada inicialmente investigando seus genes isoladamente. A maioria dos bovinos são heterozigotos em BoLA e apenas em ocasiões especiais (animais homozigotos ou que possuam informação de pedigree) seu haplótipo pode ser caracterizado. Portanto, este trabalho objetivou desenvolver uma nova abordagem para descrever haplótipos de BoLA de vacas heterozigotas, utilizando células do trofoblasto de embriões partenogenéticos bovinos. Dois métodos para validação desta abordagem foram utilizados: um painel de 445 SNPs em BoLA foi informativo acerca do efeito que a recombinação meiótica apresenta na zigose da região; e a comparação de alelos de BoLA-DRB3 entre a fêmea bovina e sua célula trofoblástica partenogenética (CTP) demonstrou ser um método confiável e prático para a investigação de homozigose em BoLA. A partir de ambos os métodos, a metodologia desenvolvida aqui foi validada, já que CTPs homozigotas em BoLA foram derivadas de vacas heterozigotas, permitindo a descrição de haplótipos de BoLA. A análise detalhada da região de Classe IIa de BoLA-DRB3-DQA-DQB revelou a presença de 18 haplótipos distintos, sendo 16 destes nunca antes descritos. Além disso, dois alelos de DQA e um de DQB presentes nestes haplótipos são novos. O método descrito aqui foi mais eficiente do que a investigação por fêmeas homozigotas ou inferir a composição haplotípica baseada em informação de pedigree, além de evitar ambiguidades nos resultados. Novas pesquisas buscando a otimização deste método podem aumentar a sua eficiência e torná-lo mais facilmente aplicável a uma variedade de estudos genéticos, usando espécies diferentes e com finalidades distintas.
The prospect of increasing the productivity of cattle by means of genetic improvement is increasingly investigated. Among the most studied and and promising genomic regions is the Major Histocompatibility Complex (MHC), since it includes key genes of the immune response of the animals, being able to select makers in this region for increased disease resistance and therefore greater production. The diversity of the cattle MHC, known as BoLA (Bovine Leukocyte Antigens), has been primarily studied using variants of serological specificities or sequencing some of its genes. Most cattle are heterozygous at BoLA and only in special occasions (homozygous animals or animals for which pedigree information is available) can the haplotypes be characterized. Therefore, this study aims to develop a novel approach to describe BoLA haplotypes from heterozygous cows, using trophoblast cells from parthenogenetic bovine embryos derived from slaughterhouse ovaries. Two methods for validating this approach were used: a panel of 445 SNPs spanning BoLA region was informative on the effect of meiotic recombination on the region zigosity; and the comparison of BoLA-DRB3 alleles between the dam and its parthenogenetic embryo derived trophoblast cells (PEDTC) proved to be a reliable and practical method for investigating BoLA homozigosity. Using both methods, the approach presented here was validated, since BoLA homozygous PEDTC were derived from heterozygous cows, allowing the description of BoLA haplotypes. Detailed analysis of the BoLA Class IIa region identified 18 different BoLA-DRB3-DQA-DQB haplotypes, including 16 novel haplotypes. Furthermore, two DQA and one DQB alleles included in these haplotypes were novel. This method was more efficient than to look for homozygous cows or infer haplotype composition based on pedigree information, in addition to avoid ambiguities on the results. New researches aiming for the improvement of this method can increase its efficiency and make it more easily applicable for a variety of genetic studies, using different species and for other purposes.
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Hidman, Karin. "Evaluation of a new microarray method for genotyping of HLA-DQ2 and HLA-DQ8 for investigation of celiac disease." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-176139.
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Celiac disease (CD) is an autoimmune disease, induced by an immune mediated reaction in the small intestine after ingestion of gluten and related prolamines. There is a strong genetic linkage and most important are the genes that encodes for HLA-DQ2 and HLA-DQ8. The European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) has developed new guidelines for investigation of CD in children and adolescents, which include genotyping for HLA-DQ2 and HLA-DQ8. Therefore, the clinical microbiological laboratory in Västmanland wants to introduce a method for analysis of these genes. Microarray is a newly developed method for determination of the alleles HLA-DQA1 and HLA-DQB1 that encodes for the α- and β-subunits of the HLA-molecules. The method was verified for accuracy and repeatability, and also two extraction methods were compared. Samples from blood donors and laboratory personnel were analysed for HLA-DQ and tissue transglutaminase antibodies (anti-tTG), and two families were investigated according to the ESPGHAN guidelines. 48.3 % of the blood donors were positive for HLA-DQ2 and/or HLA-DQ8 and 30.4 % of the laboratory personnel, were positive for HLA-DQ2 or HLA-DQ8. Those who were tested for anti-tTG had no antibody response. Genotyping for HLA-DQ2 and HLA-DQ8 is a simple way to exclude CD, but it can also be used to confirm diagnosis in patients with symptoms and high anti-tTG levels and thus avoiding a biopsy. The results in the accuracy and repeatability tests showed that the microarray is a reliable method for detection of the HLA-DQ2 and HLA-DQ8 genes associated with CD.
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Selleski, Nicole. "Prevalência de alelos HLA predisponentes para a doença celíaca (HLA-DQ2 e HLA-DQ8) em crianças celíacas e não celíacas." reponame:Repositório Institucional da UnB, 2015. http://repositorio.unb.br/handle/10482/19497.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Programa de Pós-Graduação em Ciências da Saúde, 2015.Submitted by Fernanda Percia França (fernandafranca@bce.unb.br) on 2016-02-12T13:36:10Z No. of bitstreams: 1 2015_NicoleSelleski.pdf: 1794617 bytes, checksum: ea6f372597cf25bb16cfdc52ec8a1d29 (MD5)
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A doença celíaca é uma doença autoimune, de natureza inflamatória, caracterizada por uma intolerância permanente ao glúten em indivíduos geneticamente predispostos. Quase todos os pacientes celíacos possuem genes que codificam os heterodímeros HLA-DQ2.5, DQ8 ou DQ2.2, os quais participam na apresentação de peptídeos específicos derivados do glúten às células T CD4+. O objetivo desse trabalho foi determinar a prevalência das variantes predisponentes para DC em grupos de crianças celíacas (n=100) e não celíacas (n=110) da cidade de Brasília, Brasil. No grupo de crianças celíacas, 51% (n=51) apresentaram unicamente a variante DQ2.5, 22% (n=22) DQ2.5 e DQ2.2, 5% (n=5) somente DQ2.2, 7% (n=7) DQ2.5 e DQ8, 6% (n=6) DQ2.2 e DQ8, 6% (n=6) foram positivas unicamente para DQ8, 1% (n=1) somente para o alelo DQB1*02, 1% (n=1) apresentaram alelos de baixo risco e 1% (n=1) foram negativas para todos os alelos testados. O padrão evidenciado em crianças não celíacas foi: 14,5% (n=16) foram positivas unicamente para a variante DQ2.5, 3,6% (n=4) para DQ2.5 e DQ2.2, 11,8% (n=13) somente para DQ2.2, 0,9% (n=1) para DQ2.5 e DQ8, 0,9% (n=1) para DQ2.2 e DQ8, 13,6% (n=15) unicamente para DQ8, 1,8% (n=2) somente apresentaram o alelo DQB1*02, 26,4% (n=29) foram positivas para alelos de baixo risco e 26,4% (n=29) não apresentou nenhum dos alelos analisados. A prevalência de genótipos predisponentes para doença celíaca encontrada na população de crianças celíacas (DQ2: 80% e DQ8: 19%) foi similar à descrita para populações não europeias. Por outro lado, a proporção total desses alelos achados no grupo de crianças não celíacas (33,6%) mostrou-se semelhante à obtida na população geral europeia. Finalmente, os genes que codificam o heterodímero HLA-DQ2.2 não apresentaram diferenças estatisticamente significativas entre os grupos, o que nos permitiu concluir que a inclusão da variante HLA-DQ2.2 como genótipo predisponente para DC não seria relevante para a população analisada. ______________________________________________________________________________ ABSTRACT
Celiac disease is an autoimunne enteropathy triggered by the ingestion of glúten in genetically susceptible individuals. Almost all celiac patients possess immune recognition genes encoding either HLA-DQ2.5, DQ8, or DQ2.2 heterodimers which facilitate CD4+ T-cell recognition of specific gluten-derived peptides. The aim of our study was to determine the prevalence of these predisposing variants in a group of celiac (n=100) and non-celiac (n=110) children from Brasilia, Brazil. Among celiac children, 51% (n=51) were DQ2.5 positives, 22% (n=22) DQ2.5/DQ2.2, 5% (n=5) DQ2.2, 7% (n=7) DQ2.5/DQ8, 6% (n=6) DQ2.2/DQ8 and 6% (n=6) DQ8 positives, 1% (n=1) were positives for DQB1*02, 1% (n=1) were only positives for low risk alleles and 1% (n=1) were negative for all the tested alleles. The HLA-DQ pattern in non-celiac children was: 14.5% (n=16) DQ2.5, 3.6% (n=4) DQ2.5/DQ2.2, 11.8% (n=13) DQ2.2, 0.9% (n=1) DQ2.5/DQ8, 0.9% (n=1) DQ2.2/DQ8 and 13.6% (n=15) DQ8 positives, 1.8% (n=2) were only positives for DQB1*02, 26.4% (n=29) presented low risk alleles and 26.4% (n=29) were negative for all the tested alleles. The prevalence of celiac disease predisposing alleles (DQ2: 80% and DQ8: 19%) was similar to that of non-European populations. However, the total number of alleles found in non celiac children (33.6%) resembles the European parameters for general population. Finally, the prevalence of genes coding for HLA-DQ2.2 heterodimer was not significantly different between celiac and non-celiac children, thus, suggesting that this variant would not be relevant in the studied population.
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Sculfort, Sabrina. "D10 -d10 interactions in heterometallic molecular clusters." Strasbourg, 2009. http://www.theses.fr/2009STRA6226.
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La réactivité du métallate [MoCp(CO)3]− vis à vis de complexe de cuivre(I), d’argent(I) et d’or(I) a conduit à une série de complexes hétérométalliques anioniques de formule [M{MoCp(CO)3}2]−(M = Cu(I), Ag(I), et Au(I)). Ces complexes ont été caractérisés par diffraction des rayons X et utilisés comme précurseurs de clusters mixtes à coeurs métalliques hexa- ou octanucléaire pseudo-plans. Ces clusters oligomériques {M[m]}n (M = Cu, n = 3; M = Ag, Au, n = 4) possèdent le même métalloligand pontant [m] = CpMo(CO)3 et ont pu être synthétisés et caractérisés. Le coeur métallique du cluster [Cu3{MoCp(CO)3}3] forme un triangle de fréquence 2 (ν2), constitué d’un triangle de cuivre ponté sur chacune de ses arêtes par un molybdène. Les clusters en “étoile” [Ag4{MoCp(CO)3}4] et [Au4{MoCp(CO)3}4] sont des carrés de fréquence 2 (ν2) formés d’un coeur métallique carré d’argent et d’or, respectivement, dont les arêtes sont pontées par un molybdène. Pour chacun de ces clusters, des distances courtes entre les ions d10 ont été mises en évidence, confirmant de réelles interactions entre ces centres métalliques. Des calculs théoriques ont été entrepris en collaboration pour comprendre ces interactions et leurs géométries. A partir des complexes « linéaires » [M{MoCp(CO)3}2]−, nous avons pu démontrer qu’une interconversion entre les chaînes {M[m]}n et les clusters {M[m]}n était possible dans le cas où M = Cu ou Ag et que la positon de l’équilibre dépendait seulement de la stoechiométrie des réactifs. De nouveaux complexes mixtes [CuAg3{MoCp(CO)3}4], [CuAu3{MoCp(CO)3}4] ont été obtenus et caractérisés par diffraction des rayons X ainsi qu’un complexe inattendu [(Na•DME)[Cu2{MoCp(CO)3}3]]2Anionic, metal−metal bonded heterotrinuclear chain complexes of the type [M{MoCp(CO)3}2]− with M = Cu(I), Ag(I), and Au(I) have been prepared by reaction between a d10 metal precursor complex and the carbonylmetalate [MoCp(CO)3]−. These complexes have been structurally characterized by X-ray diffraction and used as precursors to neutral 2-D hexa- or octanuclear mixed-metal clusters of the general formula [MMoCp(CO)3]n (M = Cu, n = 3; M = Ag or Au, n 4). The ν2-triangular (M = Cu) or ν2-square (M = Ag, Au) structures of their metal-metal-bonded cores allow comparative evaluation of the d10-d10 interactions and theoretical calculations point to a favourable contribution of diagonal Au—Au or Ag—Ag interactions in the square structures. It is shown in the case of M = Cu and Ag that interconversion between the metal chain complexes of stoichiometry M[m]2 and the clusters {M[m]}n is possible, and the position of the equilibrium depends solely on the respective stoichiometry of the reagents. New ν2-square, octanuclear, trimetallic complexes [CuAg3{MoCp(CO)3}4] and [CuAu3{MoCp(CO)3}4] have also been obtained and characterized in the solid-state by X-ray diffraction, as well as the unexpected double pentanuclear complex [{Na(dme)}{Cu2[MoCp(CO)3]3}]2
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Geoghegan, Mark, and Robert Schumacher. "PERFORMANCE RESULTS USING DATA QUALITY ENCAPSULATION (DQE) AND BEST SOURCE SELECTION (BSS) IN AERONAUTICAL TELEMETRY ENVIRONMENTS." International Foundation for Telemetering, 2017. http://hdl.handle.net/10150/627011.
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Flight test telemetry environments can be particularly challenging due to RF shadowing, interference, multipath propagation, antenna pattern variations, and large operating ranges. In cases where the link quality is unacceptable, applying multiple receiving assets to a single test article can significantly improve the overall link reliability. The process of combining multiple received streams into a single consolidated stream is called Best Source Selection (BSS). Recent developments in BSS technology include a description of the maximum likelihood detection approach for combining multiple bit sources, and an efficient protocol for providing the real-time data quality metrics necessary for optimal BSS performance. This approach is being standardized and will be included in Appendix 2G of IRIG-106-17. This paper describes the application of this technology and presents performance results obtained during flight testing.
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Xia, Baohui, and 夏寶輝. "Metal-metal interactions in homo- and hetero-metallic complexes containing d0, d8 and d10 metal ions: spectroscopic and theoretical studies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B42577317.
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Xia, Baohui. "Metal-metal interactions in homo- and hetero-metallic complexes containing d0, d8 and d10 metal ions spectroscopic and theoretical studies /." Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B42577317.
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Sougey, Everton Botelho. "Sistema LICET-D10 : multidiagnostico computadorizado das depressões." [s.n.], 1992. http://repositorio.unicamp.br/jspui/handle/REPOSIP/308852.
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Orientador : Dorgival CaetanoTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
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Resumo: O desenvolvimento histórico da nosologia dos estados depressivos e as tentativas contemporâneas de reclassificação ilustram a origem de algumas dificuldades atuais e também sugerem novas perspectivas de investigação. A abordagem multidiagnóstica da nosologia foi o modelo em que o autor se baseou com o objetivo de desenvolver o SISTEMA UCET-D10, um instrumental de pesquisa sobre classificação das depressões. Este Sistema é composto pela Lista Integrada de Critérios de Avaliação Taxionômioa das Depressões - a LICET-D10; um Glossário de Definições de Sintomas e por um Programa Computadorizado de multidiagnóstico das depressões. O Sistema LICET-D10 foi testado numa amostra de 28 pacientes deprimidos e demonstrou sua funcionalidade. Este instrumental pode ser utilizado em pesquisa ou em clinica; favorece o treinamento em semiologia e nosologia das depressões; permite a obtenção de dez diagnósticos operacionais de depressão para cada paciente examinado; fornece amostras homogêneas de pacientes. permitindo facilmente executar a posteriori, reclassificações em subgrupos; possibilita comparações intersistemas entre as diversas categorias e subcategorias de estados depressivos. contribuindo para a investigação sobre confiabilidade e validade do diagnóstico psiquiátrico
Abstract: The historical developments of the nosology of depressive states and contemporary attempts at reclassification not only ilustrate the origin of some of the present difticulties but mo suggest new perspeetives of investigation. The multidiagnostie approaeh to nosology provides the model upon which the author based himsett with the objective of developing the LICET-D10 System, a research tool for the classification of depression. This System comprises the Integrated List of Taxionomie Eval.uation Criteria for Depression (LICET D10); a glossary of definitions of symptoms and a computerized program of multidiagnosis of depression. The LICET-D10 System was tested on a sample of 28 depressed patients and proved its operational effectiveness. This tool ean be used in research or clinical. practice; it furthers training in the semiology and nosology of depressions; provides ten operational. diagnoses for each patient examined; supplies homogeneous samples of patients, permitting a posterior and easy reclassifieation in subgroups; makes possible inter systemic comparisons between the difterent categories and subcategories of depressive states, thus contributing to the investigation into the reHabiHty and val.idity of psychiatric diagnosis
Doutorado
Saude Mental
Doutor em Medicina
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Frank, Nicolas. "d10-Metallkomplexe des p-tert-Butyltetramercaptotetrathiacalix[4]arens." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21975.
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Ziel dieser Arbeit war es, das Potenzial von p-tert-Butyltetramercaptotetrathiacalix[4]aren (H4(MTC[4])) zum Aufbau von mehrkernigen Komplexen mit weichen Metallionen mit d10-Elektronenkonfiguration zu untersuchen. H4(MTC[4]) bietet im Vergleich zum bekannteren p-tert-Butylcalix[4]aren erweiterte Bindungsmöglichkeiten für Metallionen an den Thioetherbrücken. Die Funktion der Metallionen Cu(I) und Zn(II) in biologischen Systemen lieferte die anfängliche Inspiration, jedoch erschien auch die Untersuchung anderer Metalle wie Nickel, Silber und Gold in Verbindung mit (MTC[4])4- Liganden lohnenswert, da diese Metalle durch ihre jeweils bevorzugten Koordinationsgeometrien neue Strukturen und Koordinationsmöglichkeiten an H4(MTC[4]) aufzeigen könnten.
In Experimenten mit Kupfer(I)-Ionen konnten der Kupferkomplex [(Ph3PCu)4(MTC[4])] sowie das Hexamer [Cu4(MTC[4])]6 hergestellt und charakterisiert werden. [Cu4(MTC[4])]6 weist eine einzigartige, supramolekulare, hohle Cu24S48-Käfigstruktur auf. Die [Cu4(MTC[4])]-Einheiten werden durch Cu2S2-Motive verknüpft, die extrem kurze Cu···Cu-Abstände aufweisen. Durch NMR-Experimente wurde gezeigt, dass die Hohlräume von [Cu4(MTC[4])]6 in Lösung Acetonitril und Methan aufnehmen können.
In Experimenten mit Silber(I)-Ionen wurden die Molekülstrukturen der Silberkomplexe [(Ph3PAg)2AgH(MTC[4])], [(Ph3PAg)4AgCl(MTC[4])] und [(Ph3PAg)4(MTC[4])] bestimmt. Diese zeigen, dass H4(MTC[4]) gegenüber Silber- und Kupferionen ein ähnliches Koordinationsverhalten aufweist.
In Experimenten mit Gold(I)-vorläufern war es möglich, zu steuern, wie viele Metallionen ein einzelnes Molekül H4(MTC[4]) koordiniert. Die Komplexe [(Ph3PAu)2H2(MTC[4])], [(Me3PAu)3H(MTC[4])] und [(Me3PAu)4TlCl(MTC[4])] wurden synthetisiert. Diese bieten teilweise durch vorhandene freie Thiolfunktionen Potenzial für die Synthese heterometallischer Komplexe.It was the aim of this work, to assess the potential of p-tert-Butyltetramercaptotetrathiacalix[4]arene (H4(MTC[4])) to create multinuclear complexes with soft metal ions of d10 electron configuration. In contrast to the more known p-tert-Butylcalix[4]aren, H4(MTC[4]) offers extended possibilities for the coordination of metal ions at the thioether groups. While this work was initially inspired by the function of Cu(I) and Zn(II) ions in biological systems, the metal ions, which were incorporated into the Calixarene, were soon expanded by Ni(II), Ag(I) and Au(I) ions. Through their different preferred coordination geometries, these metal ions could yield new information about coordination modes of H4(MTC[4]). In experiments with copper(I) ions the complex [(Ph3PCu)4(MTC[4])] and the hexamer [Cu4(MTC[4])]6 were synthesized and characterized. [Cu4(MTC[4])]6 consists of a unique, supramolecular hollow Cu24S48 cage structure. The [Cu4(MTC[4])] units are connected by Cu2S2 motivs, which display extraordinary short Cu···Cu distances. An investigation by NMR spectroscopy indicated that the cavities of [Cu4(MTC[4])] in solution can hold acetonitrile or methane molecules. In experiments with silver(I) ions, the molecular structures of the compounds [(Ph3PAg)2AgH(MTC[4])], [(Ph3PAg)4AgCl(MTC[4])] and [(Ph3PAg)4(MTC[4])] were determined. In these compounds H4(MTC[4]) exhibits a similar coordination behaviour towards Ag(I) ions as it does towards Cu(I) ions. In experiments with gold(I) precursors it was possible to control how many gold(I) ions were coordinated by H4(MTC[4]). The complexes [(Ph3PAu)2H2(MTC[4])], [(Me3PAu)3H(MTC[4])] and [(Me3PAu)4TlCl(MTC[4])] were synthesized and studied. Due to their free thiol functions, they are potential precursors for the synthesis of heterometallic complexes.
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Jiang, Wen. "Analysis of toroidal shells using the semi-analytical DQM." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6061.
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The present thesis consists of two main parts. The first part is concerned with the vibration and statics of transversely isotropic thick-walled toroidal shells. The second part is concerned with the vibration and statics of orthotropic thin-walled toroidal shells. In the first part a solution based on the linear three-dimensional theory of elasticity is developed for vibration and static problems of toroidal shells. The theory is developed for transversely isotropic toroids of arbitrary but uniform thickness. In the semi-analytical method that is adopted Fourier series are written in the circumferential direction, forming a set of two-dimensional problems. Finally results are determined for local surface loading problems. In the second part a solution based on the linear elastic Sanders-Budiansky shell equations is developed. The vibration and static characteristics of orthotropic toroidal shells of variable thickness are considered. A semi-analytical method in which Fourier series are written in the circumferential direction is adopted, forming a set of one-dimensional problems. A novelty in the solution concerns the use of power series as trial functions in a domain exhibiting cyclic periodicity. Results are determined in the second part for two separate applications. The problems in both parts of the work are solved using the differential quadrature method. A commercial finite element program is used to determine alternative solutions. The results from these two methods are compared, and conclusions are drawn.
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Almeida, Thales Eugenio Portes de. "Controle vetorial sensorless para máquinas síncronas de ímã permanente com força contra-eletromotriz não senoidal." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-23082017-164819/.
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O presente trabalho trata do desenvolvimento de um sistema de controle vetorial para máquinas elétricas síncronas de ímã permanente (MSIP), com forma de onda da força contra eletromotriz (FCEM) não senoidal, sem a utilização de sensor de posição angular do eixo. O sistema de controle é desenvolvido utilizando a transformação não-senoidal dqx, que exige a todo instante o conhecimento da posição do rotor, assim aplica-se um estimador de posição baseado nas medidas elétricas e no modelo matemático da máquina elétrica utilizando o filtro de Kalman juntamente com PLLs. Abordam-se a modelagem matemática da máquina, as técnicas de controle sem sensor tradicionais e as abordagens de controle de alto desempenho sem o uso de sensor de posição. Mostra-se o sistema proposto bem como os resultados da sua aplicação em ambiente simulado e por meio de testes práticos em bancada, mostrando o comportamento dinâmico da máquina síncrona.This work deals with the development of a vector control system for permanent magnet synchronous machines (PMSM), with non-sinusoidal back electromotive force (Back EMF) waveforms, widely known as the BLDC machine, without shaft angular position sensor. The control system is developed using the non-sinusoidal transformation dqx, which demands constant knowledge of the shaft\'s angular position. This way, a position estimator is applied, based solely on electrical measurements and the machines mathematical model applying the Kalman filter and PLLs. Thus, the machines mathematical modelling, and the sensorless control and estimation approaches are reviewed. The developed system is explained, along with the results obtained trough simulations and practical tests, demonstrating the dinamic behavior of the PMSM.
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Falco, Tony. "MTF, NPS and DQE analysis of portal metal-platefilm detectors." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23885.
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Previous studies of modulation transfer function (MTF), noise power spectrum (NPS), and detective quantum efficiency (DQE) of metal-plate/film portal detectors have been performed on limited combinations of front and back metal-plates. We report on these parameters for an extensive set of forty-nine front-back metal-plate combinations. The portal detector consists of a double emulsion RP (Kodak localization therapy) film placed between metal-plates: Al, Cu, brass and Pb of thicknesses varying from 0.30 to 4.80 mm. Radiation sources included a Theratron Co-60 unit, and a Varian Clinac-18 linear accelerator delivering a polyenergetic 10 MV X-ray spectrum. In terms of the absolute efficiency of the detectors, the best DQE is obtained with the detector consisting of a 1.75 mm Cu front plate and a 1.62 mm Al back plate for the Clinac-18, and with the detector consisting of a 0.95 mm Cu front plate and a 0.80 mm Cu or a 1.62 mm Al back plate for the Co-60 gamma ray source.
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Frank, Nicolas [Verfasser]. "d10-Metallkomplexe des p-tert-Butyltetramercaptotetrathiacalix[4]arens / Nicolas Frank." Berlin : Humboldt-Universität zu Berlin, 2020. http://d-nb.info/1219507644/34.
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König, Karl Christian [Verfasser]. "Hochauflösende Typisierung von HLA-DQB mittels Sequenzanalyse / Karl Christian König." Ulm : Universität Ulm. Medizinische Fakultät, 2015. http://d-nb.info/1073211665/34.
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Blomqvist, Samuel, Daniel Thorén, Christopher Peters, William Sjöblom, Fredrik Malmfors, André Willquist, and Ludvig Westerdahl. "DQ - Digitalt biljettsystem." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148609.
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Syftet med denna rapport är att redovisa utvecklingen av ett digitalt biljettsystem som skulla användas av studentföreningar vid Linköpings universitet. Systemet utvecklas av studenter vid Linköpings universitet på uppdrag av individer representerande LinTek och StuFF, två kårer vid universitetet. Målet med projektet är att utveckla ett digitalt kösystem som studenter vid Linköpings universitet kan använda för att köpa biljetter till fester eller liknande. Resultatet av projektet är ett i många aspekter fungerande system som dock saknar vissa grundläggande aspekter. Utöver det utvecklade systemet har även denna rapport skrivits inklusive en individuell del per gruppmedlem som går in på djupet i olika områden relaterade till projektet.
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Truetzschler, Jens. "Realisierung eines Batchmanagementsystems fuer den Parallelrechner." Thesis, Universitätsbibliothek Chemnitz, 1995. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199500017.
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Es werden sowohl die Charakteristika des DQS als auch die
Anforderungen an einen produktiven Batchbetrieb des
Parallelrechners dargelegt und gegenuebergestellt.
Das DQS-System wurde um eine spezielle Komponente fuer
die Prozessorverwaltung erweitert und praktisch erprobt,
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Sommer, Stephan. "Synthesen und Kristallstrukturen von Iodo-d10-metallaten (I) mit chiralen Kationen." [S.l. : s.n.], 2000. http://www.diss.fu-berlin.de/2001/1/index.html.
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Urban, Victoria. "Synthesen und Strukturuntersuchungen von Cyano- und Thiocyanato-halogeno-d10-metallaten(I)." [S.l. : s.n.], 2000. http://www.diss.fu-berlin.de/2001/26/index.html.
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Santos, Dimas Gomes dos. "Influência da DQO do Condensado da Evaporação na Branqueabilidade da Celulose." Universidade Federal de Viçosa, 2013. http://locus.ufv.br/handle/123456789/5946.
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Previous issue date: 2013-07-29The bleaching washing process in Suzano Papel e Celulose (Mucuri-BA) s -fiberline 2 utilizes condensate from evaporation 2, which contains high COD load. This laboratory study was designed to verify the influence of evaporation condensate COD load and chlorine dioxide consumption in pulp bleachability, in A/DEpDP. Four simulations were performed and industrial condensate from Suzano s Mucuri unit and two other Pulp Plants (A and B) were utilized. The influence of DDW filtrate, both diluted and concentrated, in contrast to condensate, was also evaluated. On the condensate characterization, COD content on Suzano s sample (2910.8 ppm) was eight times higher than the values of Plants A and B (263.3 and 339.2 ppm, respectively) and the methanol content was 74.0% of COD s value. Analysis showed that 98.16% of the pulp s COD variation could be explained by the condensate COD load used to wash the pulp. Simulations 1 and 2 evaluated the bleachability influence of the following condensates: Suzano, Plants A and B, and Suzano s optimized. Suzano s sample, with greater condensate and pulp COD values, presented greater bleachability difficulty, where this variation can be attributed to the COD load of the pulp entering the bleach plant. COD influence on pulp viscosity was not significant. Finally, in order to achieve a final brightness of 89.7% ISO, there was an active chlorine consumption reduction equivalent to 1.3; 0.9 and 1.8 kg/tsa for Plant A, B and Suzano optimized respectively, when compared to Suzano s sample consumption. Simulation 4 evaluated the influence of washing the pulp with condensed and filtrates (diluted and concentrated) that were collected from the DDWs. Washing the pulp with filtrate affected pulp bleachability negatively, increasing Ep kappa number and interfering with brightness development in all bleaching stages. Moreover, there was an increase in active chlorine consumption of 5.0 and 13.0 kg/ADT, for the samples washed with diluted and concentrated filtrates, respectively, when compared with the consumption for pulp washed with condensate, to achieve final pulp brightness equivalent to 89.0% ISO. Thereby, it is possible to infer that the use of washer filtrates is not economically attractive, given the increase in active chlorine consumption in the bleaching step.
O processo de branqueamento na linha de fibras 2 da Suzano Papel e Celulose (Mucuri-BA) utiliza condensado da evaporação 2 com elevado teor da DQO para a lavagem da polpa pré-branqueada. Neste estudo foi analisado, em laboratório, a influência da DQO do condensado no consumo de cloro ativo e parâmetros de branqueabilidade da polpa, na sequência A/DEpDP. Foram realizadas quatro simulações, nas quais foram utilizados condensados industriais da Suzano e duas outras fábricas do Setor (Fábricas A e B). Também foi avaliada a influência de filtrados diluído e concentrado, coletados no lavador DDW, em comparativo à utilização de condensado. Na caracterização dos condensados foi observado que o valor de DQO da amostra Suzano (2910,8 ppm) é oito vezes superior aos valores das Fábricas A e B (263,3 e 339,2 ppm, respectivamente) e que para esta amostra a composição de metanol equivale a 74,0% do valor integral da DQO. Foi observado que 98,16% da variação da DQO da polpa (entrada do branqueamento) é explicada pela DQO do condensado utilizado na sua lavagem. Nas Simulações 1 e 2 foi avaliada a influência dos condensados Suzano, Fábricas A e B e Suzano otimizado, onde observou-se que a amostra Suzano, com maiores valores da DQO do condensado e da polpa, demonstrou maior dificuldade de branqueabilidade. Não foi verificada influência da DQO do condensado nos valores de viscosidade da polpa. Ainda, foi verificada uma redução no consumo de cloro ativo equivalente a 1,3; 0,9 e 1,8 kg/tsa para as amostras da Fábrica A, B e Suzano otimizada, respectivamente, quando comparado ao consumo da amostra Suzano, para atingir uma alvura final de 89,7 %ISO. Por fim, na Simulação 4, onde foi avaliada a influência da lavagem com condensado e filtrados diluído e concentrado, coletados nos lavadores DDW, foi observada que a lavagem da polpa com os filtrados afetou negativamente a branqueabilidade da polpa, aumentando o valor de número kappa no estágio Ep e interferindo nos valores de alvura em todos os estágios de branqueamento. Também, foi verificado um aumento no consumo de cloro ativo, para atingir uma alvura final da polpa equivalente a 89,0 %ISO, inferindo que esta lavagem com filtrados não se viabiliza economicamente.
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Murray, Brent W. "Major Histocompatibility Complex class II sequence variation in cetaceans, DQß and DRß variation in beluga, Delphinapterus leucas, and DQß variation in north Atlantic right whales, Eubalaena glacialis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0019/NQ30162.pdf.
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Ete, Rémi. "Développement d’un algorithme de suivi de particules pour l’ILC : outils de surveillance de qualité de données en ligne." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1034/document.
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Après la découverte au Large Hadron Collider (LHC) d'un boson de Higgs compatible avec celui du modèle standard, les futurs projets de collisionneurs tels que le Collisionneur Linéaire International ILC sont proposés pour succéder au LHC. Les deux détecteurs proposés pour être placés au point de collision de l'ILC, le Grand Détecteur International ILD et le Détecteur en Silicium SiD, seront des détecteurs généralistes, conçus pour permettre l'application des algorithmes de suivi de particules, principal sujet d'intérêt de cette thèse. Le calorimètre hadronique à lecture semi-digitale SDHCAL développé essentiellement à l'IPN de Lyon, fait partie des options pour le calorimètre hadronique du détecteur ILD. Les travaux effectués dans cette thèse portent sur le développement d'un algorithme de suivi de particules basé sur la topologie en arbre des gerbes hadroniques. Après une première implémentation pour le prototype du SDHCAL d'une taille d'un mètre cube, une seconde implémentation est proposée pour reconstruire les particules issues des collisions dans le détecteur ILD. A l'aide de données issues de simulations numériques, les performances physiques sont extraites. Dans le cas de la version dédiée au prototype du SDHCAL, les résultats sont comparés aux données récoltées lors des différents tests sur faisceau.En parallèle de ces travaux, un logiciel de surveillance de données en ligne générique nommé DQM4HEP a été développé. Des analyses spécifiques aux données récoltées par le prototype du SDHCAL lors des divers tests sur faisceau, ont été déployées afin de tester le logicielAfter the discovery of a Higgs boson compatible with the standard model one at the Large Hadron Collider (LHC), future project of particle colliders such as the ILC are suggested to succeed the LHC. The two detectors at the collision point, the International Large Detector (ILD) and the Silicon Detector (SiD), are generalist detectors, deigned to allow the application of particle flow algorithms, main topic of interest of this thesis.The semi-digital hadronic calorimeter (SDHCAL), mainly developped at the IPNL, is one the options for the hadronic calorimeterof the ILD detector. The researches presented in this thesis are focused on particle flow development based on the tree topology of hadronic showers. After a first implementation for the SDHCAL physics prototype, a second one is proposed to reconstruct the particles from collisions in the ILD detector. Using Monte-Carlo data samples, physics performances are extracted. In the first version case, results are compared to available test beam data recorded by the SDHCAL prototype at CERN.In parrallel of this work, a data quality monitoring framework, called DQM4HEP, has been developped. Analyzes specific to SDHCAL data taken during beam tests have been deployed in order to test the software
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Penteado, Ana Lucia Pontes. "Estudo de microorganismos que reduzem a DQO do efluente de uma cervejaria." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254720.
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Orientador: Lucia R. DurrantDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: Noventa linhagens de microrganismos isolados das diferentes etapas da Estação de tratamento de efluente (E.T.E.) de uma cervejaria situada na região de Campinas - SP e cinco fungos provenientes da coleção do Laboratório de Sistemática e Fisiologia Microbiana (L.S.F.M.) foram estudados quanto a capacidade de redução da DQO do efluente oriundo do tanque de equalização Ef1. Foram selecionadas três linhagens que apresentaram melhor capacidade de redução de DQO, sendo que duas (Aspergillus niger e Aspergillus fumigatus) pertencem a coleção do L.S.F.M. e uma foi isolada da ETE tendo sido identificada como Bacillus cereus. Foi estudada a influência de diversos fatores tais como: influência do pH inicial do meio de crescimento (Ef1), tamanho de inóculo, adição de (NH4)2S04' tempo de crescimento, associação e imobilização dos fungos A. niger e A. fumigatus na redução da DQO do efluente proveniente do tanque de equalização Ef1. s resultados foram satisfatórios, sendo que a cepa de Bacillus cereus apresentou uma faixa de 58,70 à 84,72% para redução da DQO, já para os fungos Aspergillus niger e Aspergillus fumigatus os resultados foram de 30,00 - 81,81% e de 75,49 - 80,43% respectivamente, nos tempos de crescimento e pH inicial do meio Ef1 de maior eficiência deredução de DQO. A adição de (NH4)2S04 ao efluente Ef1 resultou numa melhora na redução da DQO para todos os microrganismos estudados. A imobilização fúngica de A. fumigatus em espuma de poliuretana foi eficaz no estudo de redução da DQO de efluentes
Abstract: Ninety strains of microorganisms isolated from different stages of a wastewater treatment plant (W.T.P.) of a brewery at Campinas region - São Paulo and tive fungi from the Microbial Physiology Systematic Laboratory (M.P.S.L.) collection were studied in relation to their chemical oxigen demand (COD) reducing capacity of the effluent from the equalization tank Ef1. Three strains that have been shown the best reducing ability were selected, two of which (Aspergillus niger and Aspergillus fumigatus) belonging to the M.P.S.L. and one was isolated from the W.T.P. have been identified as Bacillus cereus. The influence of various factors was studied such as: the initial pH of the growing medium (Ef1), inoculum size, addition of a nitrogen souce, growing time, association and immobilization of the fungi A. niger and A. fumigatus in removing effluent chemical oxygen demand from the equalization tank Ef1. The results were satisfactory. The Bacillus cereus strain shown a range from 58,70 to 84,72% for the COD removing, for the fungi Aspergillus niger and Aspergillus fumigatus the results were from 30,40 to 81,81 % and from 75,49 to 80,43% respectively, at the growing times and initial pH ofthe medium Ef1 which gave the best results in COD removing. The addition of (NH4)ZS04 to the Ef1 effluent resulted in a improvement of COD reduction for all microorganisms studied. In the study of effluents COD reduction, the Aspergillus fumigatus immobilization in polyurethane foam was efficient
Mestrado
Mestre em Ciência de Alimentos
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Mendez, Érica Andrade Carvalho. "Confiabilidade Metrológica: o caso da análise de DQO em um laboratório acadêmico." Universidade do Estado do Rio de Janeiro, 2013. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7637.
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Conselho Nacional de Desenvolvimento Científico e TecnológicoDesde 2004, o CONAMA (Conselho Nacional de Meio Ambiente), através de sua Resolução n 344, vem exigindo que as análises físicas, químicas e biológicas em matrizes ambientais sejam realizadas em laboratórios ambientais que possuam sua competência técnica reconhecida formalmente através da acreditação concedida pelo Inmetro. Assim, algumas Unidades Federativas vem adotando o mesmo critério para cadastramento de laboratórios em seus bancos de dados. Com isso, houve um crescimento no número de acreditações: em 2002 haviam 12 laboratórios acreditados e em 2012 foram concedidas 198 acreditações a laboratórios ambientais. A adoção da ABNT NBR ISO/IEC 17025 como padrão de trabalho, além de atender as legislações vigentes, possui as seguintes vantagens: satisfação do cliente, credibilidade e melhoria contínua do laboratório, melhoria da capacitação profissional e a conquista de um mercado mais amplo. Buscando adequar-se a essa realidade, apesar de todas as dificuldades inerentes ao processo de implementação dos requisitos da ABNT NBR ISO/IEC 17025 em laboratórios universitários e de pesquisa, o Laboratório de Engenharia Sanitária (LES/DESMA) priorizou a adequação da determinação da demanda química de oxigênio (DQO) aos requisitos técnicos da ABNT NBR ISO/IEC 17025:2005, por ser um parâmetro indicador global de matéria orgânica em águas residuárias e superficiais e ser amplamente utilizado no monitoramento de estações de tratamento de efluentes líquidos e pelo fato deste poder ser determinado por duas técnicas analíticas distintas: espectrofotometria e colorimetria. Em razão deste cenário, o objetivo deste trabalho foi avaliar o desempenho dos métodos 5220 B e 5220 D descritos pelo Standard Methods, através dos parâmetros de validação de métodos analíticos. Ambos os métodos mostraram-se adequados ao uso a que se destinam e o limite de quantificação determinado apresentou-se compatível com o praticado com os laboratórios acreditados. As incertezas foram calculadas de forma a quantificar a qualidade do resultado.
Since 2004, CONAMA - National Council for the Environment - through its Resolution No. 344, has demanded that the physical, chemical and biological environmental matrices are performed in environmental laboratories that have formally acknowledged their technical competence through accreditation granted by Inmetro. Since then, some Federal Units has adopted the same criteria for laboratories registration in their databases. With that, there was an increase in the number of accreditations: in 2002 there were 12 accredited laboratories and in 2012 were granted accreditation to 198 environmental laboratories. The adoption of ABNT NBR ISO / IEC 17025 as the standard of work, in addition to attend the existing laws, has the following advantages: customer satisfaction, continuous improvement and credibility of the lab, professional skills improvement and the gain of a broader market. Seeking to adapt to this reality, despite of all the difficulties inherent in the process of implementing the requirements of ABNT NBR ISO / IEC 17025 in university and research laboratories, the Laboratory of Sanitary Engineering - LES / DESMA - prioritized to determine the suitability of Chemical Oxygen Demand - COD to the technical requirements of ABNT NRB ISO / IEC 17025:2005, as a global indicator parameter of organic matter in wastewater and surface and be widely used in monitoring liquid effluent treatment stations and because this it can be determined by two different analytical techniques: colorimetry and spectrophotometry. Given this scenario, the objective of this study was to evaluate the performance of the methods 5220 B and 5220 D described by Standard Methods, using validation parameters of analytical methods. Both methods proved to be suitable for the intended use and the limit of quantification determined appeared to be compatible with the practiced with accredited laboratories. The uncertainties were calculated to quantify the quality of the result.
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Schmitz, Angela Cristina. "Avaliação comparativa de metodologias de análise de demanda química de oxigênio - DQO." Florianópolis, SC, 2004. http://repositorio.ufsc.br/xmlui/handle/123456789/87925.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.Made available in DSpace on 2012-10-22T03:43:15Z (GMT). No. of bitstreams: 1 225492.pdf: 2029268 bytes, checksum: 9a8c4dd22806357f38a8ed13ada1d4bb (MD5)
A geração de resíduos em instituições de ensino superior é um assunto pouco examinado pela literatura, principalmente quando se referem ao gerenciamento dos resíduos gerados nos laboratórios nas suas mais diferentes atividades (ensino, pesquisa e prestação de serviço). Os problemas relacionados aos resíduos nessas instituições referem-se não apenas as situações de manejo (segregação, acondicionamento, coleta, armazenamento, transporte, tratamento e disposição final), envolvem a comunidade acadêmica e o seu comportamento perante essas situações. Um dos objetivos desse trabalho é fornecer à comunidade acadêmica referências para que a mesma possa decidir com maior clareza, como utilizar e integrar os conhecimentos existentes sobre a geração de resíduos, no sentido de resolver ou contribuir para a solução de problemas ambientais ocasionados pela disposição inadequada desses resíduos no ambiente. Para a realização deste trabalho escolheu-se a análise Demanda Química de Oxigênio - DQO, geradora de grande quantidade de resíduos, com o intuito de substituir a metodologia utilizada por outra referenciada no Standard Methods, com redução na geração de resíduos e consumo de água e energia elétrica, além de resultados satisfatórios. Para tanto, foram selecionadas algumas soluções padrão e amostras a serem analisadas de acordo com quatro metodologias diferentes. Os resultados obtidos permitiram selecionar a metodologia que apresentou resultados concernentes com os objetivos propostos neste trabalho. O conhecimento dos dados obtidos torna-se importante para que se possa definir uma metodologia para a realização da análise DQO, reduzindo ao máximo a geração de resíduos e o consumo de água e energia elétrica, além de servir como subsídio ao órgão ambiental estadual para o credenciamento de outra metodologia além da credenciada. Outro item importante neste trabalho é servir de parâmetro para que procedimentos similares sejam adotados por laboratórios de instituições de ensino superior, visando à minimização dos resíduos gerados. The generation of dangerous residues in teaching institutions has not been focused in scientific studies, mainly under the point of view of the administration of the residues generated at the laboratories The problems related to the residues in those institutions refer not only to the handling situations (segregation, packaging, collects, storage, transport, treatment and final disposal), but also how the academic community reacts due to those situations. One of the objectives of this work is to supply information so that the academic community decides accurately, how to use, in an integrated way, the existent knowledge about the generation of residues, in the sense of to solve or to contribute for the solution of environmental problems caused by the inadequate disposition of those residues in the environment. For the accomplishment of this work it was chosen the analysis of Chemical Oxygen Demand - COD, that produces great amount of residues, with the intention of proposing the substitution of the methodology used now by another approved by the Standard Methods, with reduction in the generation of residues and consumption of water and electric power, maintaining the satisfactory technical results. For this, some were selected reference solutions and samples to be analyzed under four different methodologies. The obtained results allowed to identify the methodology that presents better result in comparison with the objectives proposed in this work. The evaluation of the obtained data is important to define a methodology for the accomplishment of the analysis of COD, that reduces, significantly, the residues and the consumption of water and electric power, serving, also, to guide the government authorities for the approval of another analytical methodology, together with the approved ones nowadays. Another important objective in this work is to serve as reference parameter in the direction that similar procedures can be adopted by laboratories of education institutions, with the objective of reducing the amount of generated residues
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Ai, Pengfei. "Synthesis and reactivity of metal complexes containing functionalized N-heterocyclic carbene ligands for catalytic applications." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF025/document.
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L’objectif de ce travail fut la synthèse de ligands fonctionnels de type N,N'-diphosphanyl-NHC (NHC = carbènes N-hétérocycliques) et l’étude de leur chimie de coordination. La synthèse du nouveau ligand tridentate, stable et rigide, N,N'-diphosphanyl-imidazol-2-ylidene a permis des études expérimentales et théoriques et l’accès à des complexes mono-, di-, tri-, penta-, et hexanucléaires des métaux du groupe 11 (Cu, Ag et Au) originaux et aux propriétés structurales uniques. Les complexes mono- et dinucléaires avec un ou deux atomes de phosphore libres ont permis d’accéder à des complexes hétérotrinucléaires à interactions d10-d10 qui sont luminescents. La transmétallation partielle ou totale des complexes homotrinucléaires de Cu ou d’Ag avec des réactifs contenant du Pd(0) ont conduit à des complexes hétérotrinucléaires à interactions d10-d10. En plus de son comportement pontant, ce ligand peut se agir en chélate dans des complexes du palladium et du chrome. Dans le cas du Cr(III), ils montrent une activité catalytique en oligomérisation de l’éthylène supérieure à celle des complexes du Cr(II) et conduisent principalement à des oligomèresThe purpose of this work was the synthesis of N,N'-diphosphanyl-functionalized NHC ligands andtheir coordination chemistry. The novel stable and rigid tridentate N,N'-diphosphanyl-imidazol-2-ylidene was synthesized and experimental and computational information on its stability weregained. It served as a unique platform for the synthesis of novel mono-, di-, tri-, penta-, hexanuclear complexes with the coinage metals (Cu, Ag and Au), exhibiting rare structural features. The mono- and dinuclear complexes with one or two dangling P-donors provided rational access to heterotrinuclear complexes. All these coinage metal complexes have short metal-metalseparations, indicating the presence of d10-d10 interactions, and display excellent luminescentproperties. Partial or complete transmetallation of the homotrinuclear Cu or Ag complexes withPd(0) precursors led to hetero-trinuclear complexes with d10-d10 interactions. In addition to itsbridging behavior, this ligand also showed its chelating behavior in Pd or Cr(III) complexes. Thelatter displayed superior performance in ethylene oligomerization than the Cr(II) complexes andgave mostly oligomers
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Harmsen, Jörg. "Chemisch dotiertes und elektronenbestrahltes 1-Butanol-d10 als polarisiertes Target für teilchenphysikalische Experimente." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964363100.
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Palla, Veladri. "Heterometallic Interactions of d8-d10 Metal Ions in the Presence of +2 Cations." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/PallaV2007.pdf.
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Junior, Francisco das Chagas Gomes da Silva. "Sistema combinado anaeróbio-aeróbio para remoção de nitrogênio e DQO de efluente petroquímico." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-02092011-100919/.
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A proposta desta pesquisa foi avaliar a utilização de um sistema combinado de filtro anaeróbio (FAN) com filtro aeróbio (FAE) submerso ligados em série, ambos usando espuma de poliuretano como meio suporte e com fluxo ascendente, como alternativa para remoção matéria orgânica (DQO) e compostos nitrogenados em efluentes de refinarias de petróleo, além da redução da toxicidade do efluente ao micro crustáceo Mysidopsis juniae. O experimento durou 324 dias e foi divido em duas etapas. Inicialmente, o sistema foi operado por 129 dias sem recirculação entre os filtros e nesta etapa houve acréscimo de 12% nas concentrações de amônia no FAN e remoção de 80% no FAE. Quando se usou bicarbonato de sódio para alcalinizar o afluente ao sistema para manter o pH no FAE na neutralidade e alcalinidade acima de 107 mg\'CA\'CO IND.3\'/L, pôde-se alcançar remoções de amônia próxima a 100%. Quanto à remoção de DQO, o filtro anaeróbio removeu 40% e o aeróbio 65%. Em síntese, na primeira etapa o sistema removeu 80% de DQO, 89% de amônia e 35% de nitrogênio. A segunda etapa durou 195 dias e houve recirculação do efluente do filtro aeróbio para o filtro anaeróbio. Nesta etapa, o pH foi mantido na neutralidade e a recirculação foi feita de duas formas. A primeira com recirculação direta entre os filtros a uma razão (R) de reciclo de 2,0 resultou em 43% de remoção de amônia no FAN e 97% no FAE e com esta forma de reciclo houve 62,6% de remoção de nitrogênio total no sistema. A segunda forma de recirculação foi direcionar parte do efluente do filtro aeróbio ao reservatório do afluente ao sistema com R igual a 1,0 resultando em produção de amônia no FAN em 10% e remoção no FAE de, aproximadamente, 100%. Independentemente da forma de recirculação a remoção de DQO foi de 67% e 56% no filtro anaeróbio e aeróbio, respectivamente. A remoção de nitratos no FAN foi de 93% e foi independente da forma de reciclo. Houve 42,5% de remoção de nitrogênio no sistema. Na segunda etapa obtiveram-se as melhores remoções de DQO, amônia e nitrogênio, porém, tanto o afluente quanto o efluente final apresentou CL50 de 0,83% ao microcrustáceo M. juniae, assim, ambas as formas do efluente estão em desacordo com a resolução CONAMA 357/05. Os gêneros Aeromonas, Serratia e Pseudomonas foram dominantes no FAE ao fim da pesquisa.The purpose of this study was to evaluate the use of a combined system comprised of an anaerobic filter (ANF) and a submerged aerobic filter (SAF) connected in series, both using polyurethane foam as support media and operated in a upflow mode, as an alternative for removing organic matter (COD) and nitrogen compounds in effluents from oil refineries, as well as reducing effluent toxicity to micro crustacean Mysidopsis juniae. The experiment lasted 324 days and was divided into two stages. Initially, the system was operated for 129 days without recirculation between the filters. During this stage, there was an increase of 12% on the ammonia content in the ANF followed by a removal of 80% in the SAF. When sodium bicarbonate was used to alkalize the influent to maintain the pH in the ANF close to neutral and alkalinity above 107 mg\'CA\'CO IND.3\'/L, the removal efficiency of ammonia reached values close to 100%. Regarding to COD removal, the ANF removed 40% and SAF removed 65%. In summary, in the first stage of the research the system removed 80% of COD, 89% of ammonia and 35% of nitrogen. The second stage lasted 195 days and there was a recirculation line from the SAF to the ANF. In this step, the pH was maintained close to neutral and recirculation was done in two different ways. In the first, the recirculation flow was conducted from the SAF direct to the ANF at a rate of 2.0, which resulted in 43% removal of ammonia in the ANF and 97% in the SAF. Moreover, with this form of recycling 62.6% of the total nitrogen was removed from the system. The second way was to direct part of the effluent of the SAF to the tank that contained the influent of the ANF. In this case, the recirculation rate was 1.0, and resulted in a production of 10% of ammonia in the ANF and removal of approximately 100% in the SAF. Independently of the way used for recirculation, the COD removal efficiencies was 67% and 56% in ANF and SAF, respectively. The removal of nitrate in the ANF was 93% and was independent of the form of recycling. There was a 42.5% removal of nitrogen in the system. In the second stage occurred the best removals of COD, ammonia and nitrogen. However, both the affluent and the effluent had LC50 of 0.83% to microcrustacean M. juniae. Therfore, both forms of the effluent are in disagreement with the Brazilian law Resolução CONAMA 357/05. The Aeromonas, Serratia and Pseudomonas were dominant in the SAF at the end of research.
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Krause, Luiz Gustavo Tavares. "Influência das relações DQQ/N e So/Xo na atividade de microorganismos desnitrificantes." Florianópolis, SC, 2006. http://repositorio.ufsc.br/handle/123456789/103164.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Made available in DSpace on 2013-07-16T03:15:03Z (GMT). No. of bitstreams: 1 232191.pdf: 872261 bytes, checksum: 0e52dbd6e652a20d140d0c5dfb96ec4c (MD5)
As atividades industriais e agro-industriais do Estado de Santa Catarina tem colaborado intensamente para a redução da qualidade da água dos mananciais existentes naquela região. A suinocultura é um dos setores que mais vem contribuindo para a deteriorização do meio ambiente na mesma Dentre os problemas ambientais causados pelo lançamento dos dejetos de suínos nos corpos receptores, pode-se citar a eutrofização e a contaminação por produtos nocivos como nitrito e nitrato que oferecem riscos carcinogênicos ao homem. O nitrogênio pode ser removido por meio de processos biológicos ou físico-químicos. Dentre as alternativas, os processos biológicos são os que oferecem custos relativamente baixos, quando comparados com os processos físico-químicos. Entre os processos biológicos para a remoção de nitrogênio o processo usualmente mais adotado é o de nitrificação/desnitrificação. O processo de desnitrificação heterotrófica consiste da redução do nitrato a nitrogênio gasoso e a concomitante oxidação de compostos orgânicos, eliminando-se desta forma o impacto ambiental gerado por estes compostos. Para uma eficiente aplicação deste processo, devem ser observadas as relações estequiométricas entre doador e aceptor de elétrons, para que não ocorra a formação de compostos intermediários ou de produtos indesejáveis. As principais condições ambientais a serem atendidas são: temperatura, pH do meio, fonte de carbono com adequada relação C/N, baixa concentração de substâncias tóxicas e ausência de oxigênio no meio. Neste contexto, este trabalho teve como por objetivo avaliar alguns fatores que interferem na atividade dos microrganismos desnitrificantes e assim procurar indicar condições mais adequadas para o estabelecimento de uma metodologia para testes cinéticos de desnitrificação. Como variáveis para o estudo, avaliou-se a influencia da relação DQO/N e das relações S0/X0 no sistema. A faixa em que a relação DQO/N apresentou melhores resultados, foi entre 3 e 5 mgO2/mgN-NO3-, obtendo-se uma velocidade de remoção inicial específica de nitrato máxima de 83 mg N-NO3-/gSST.h. A faixa onde as relações S0/X0 apresentaram valores mais satisfatórios foi de 0,54 S0/X0 0,74 gN/gSST, apresentando uma eficiência média de remoção de nitrato de 95%. A concentração inicial de substrato (S0), demonstrou que altas concentrações de nitrato no meio ocasionam em uma maior quantidade de nitrito intermediário, possivelmente pela inibição das enzimas nitrito redutase, comprometendo o processo de desnitrificação. The industrial and agro industrial activities of Santa Catarina's State have deeply collaborated for the reduction of water quality of the existed water sources in that region. The swine production is one of the sectors which most is contributing for the damage of the environment in the same area. Among the environment problems cased by lancing swines objects on the receptors bodies, it can be cited the eutrofization and the contaminations by harmful products like nitrite e nitrate which offer carcinogenic risks to the man. The nitrogen can be removed by biological or physic-chemical process. Among the alternatives, the biological process is those who offer low cost relatively, when compared with physic-chemical process. Between the biological processes for the nitrogen removal the process most used is the nitrification/ denitrification. The heterotrophic denitrification process consists of the nitrate reduction to nitrogen gas and the concomitant oxidation of the organic composition, eliminating of this form the environment impact generated by this composition. For an efficient application of this process, it must be observed the stechiometric relations between electron donor and acceptor, to avoid formation of intermediary compositions or undesirable products. The principal ambient conditions to be attended are: temperature, the pH media, and carbon source with the appropriate relation C/N, low concentration of toxic substances and oxygen absence on the media. In this context, this work has as an objective to evaluate some factors that intervene on the activity of the denitrificants microorganisms and with that look for better conditions for the establishment of a methodology for this kinetic's denitrification tests. As variables for the study, it was evaluated the influence of relation DQO/N and the system relations S0/X0. The band which the relation DQO/N presented better results was between 3 and 5 mgO2/mgN-NO3-, obtained maximal specifics initial removal velocity of nitrate of the 83 mgN-NO3-/gSST.h. The band where the relations S0/X0 presented more satisfactory values was 0,54< S0/X0< 0,74 gN/gSST, presenting a mean efficiency of nitrate removal of the 95%. The initial substrate concentration (S0), demonstrated that high concentrations of nitrate on the no media causes a grater amount of intermediary nitrite, possibly for the inhibition of the nitrite redutase enzymes, compromising the denitrification process.
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Karnsund, Alice. "DQN Tackling the Game of Candy Crush Friends Saga : A Reinforcement Learning Approach." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263313.
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This degree project presents a reinforcement learning (RL) approach called deep Q-network (DQN) for learning how to play the game Candy Crush Friends Saga (CCFS). The DQN algorithm is implemented together with three extensions, which in 2015 resulted in a new state-of-the-art on the Atari 2600 domain. This thesis shows that DQN in combination with the three extensions is an appropriate method for learning how to play CCFS. The influence that each of the extensions has on the performance is investigated separately, and reasoning for why or why not these extensions make sense in this environment is provided. CCFS is a stochastic game environment with many new features per level. This leads to a challenge when designing the reward function. This thesis investigates the impact of three different reward functions and reflects over why a certain type of design is more relevant. The results presented show that the DQN approach is able to learn a policy that increases its performance compared to that of random game-play. However, at this stage the performance is not yet reaching that of human game-play, but with further research we believe that it is possible.Det här examensarbetet introducerar djupt Q-nätverk (DQN), ett tillvägagångssätt med förstärkande inlärning (RL), för att lära sig att spela spelet Candy Crush Friends Saga (CCFS). DQN implementeras tillsammans med tre tillägg, som 2015 resulterade i ett nytt toppresultat på Atari 2600-domänen. Detta examensarbete visar att DQN i kombination med de tre tilläggen är en lämplig metod för att lära sig att spela CCFS. Inverkan varje tillägg har på prestationen analyseras separat, och argument för och emot varför dessa tillägg är bra alternativ presenteras. CCFS är ett stokastiskt spel med flera nya element per nivå. Detta inför svårigheter i modelleringen av belöningsfunktionen. Detta examensarbete undersöker tre olika belöningsfunktioner och reflekterar över varför en viss typ av design är mer lämplig. Resultaten visar att DQN kan lära sig beslutstaganden som ökar dess prestation i jämförelse med slumpmässigt spel. Resultaten når i nuläget inte upp till mänsklig prestanda, men medytterligare forskning så tror vi att detta går att uppnå.
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Jablecka, Marta. "Modelling CLV in the Insurance Industry Using Deep Learning Methods." Thesis, KTH, Matematisk statistik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-273607.
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This paper presents a master’s thesis project in which deep learning methods are used to both calculate and subsequently attempt to maximize Customer Lifetime Value (CLV) for an insurance provider’s customers. Specifically, the report investigates whether panel data comprised of customers monthly insurance policy subscription history can be used with Recurrent Neural Networks (RNN) to achieve better predictive performance than the naïve forecasting model. In order to do this, the use of Long Short Term Memory (LSTM) for anomaly detection in a supervised manner is explored to determine which customers are more likely to change their subscription policies. Whether Deep Reinforcement Learning (DRL) can be used in this setting in order to maximize CLV is also investigated. The study found that the best RNN models outperformed the naïve model in terms of precision on the data set containing customers which are more likely to change their subscription policies. The models suffer, however, from several notable limitations so further research is advised. Selecting those customers was shown to be successful in terms of precision but not sensitivity which suggest that there is a room for improvement. The DRL models did not show a substantial improvement in terms of CLV maximization.I detta examensarbete presenteras metoder där djupinlärning används för att både beräkna och maximera kundens lönsamhet över tid, Customer Lifetime Value (CLV), för en försäkringsleverantörs kunder. Specifikt undersöker rapporten historisk paneldata som består av kunders månatliga försäkringsinnehav där Recurrent Neural Networks (RNN) används för att uppnå bättre prediktiv prestanda än en naiv prognosmodell. Detta undersöks tillsammans med det neurala nätverket Long Short Term Memory (LSTM), där vi försöker finna anomalier på ett övervakat sätt. Där anomalier syftar på kunder som är mer benägna att ändra sin försäkringspolicy, då den största delen av populationen har samma innehav på månadsbasis. Även en gren av djupinlärning, Deep Reinforcement Learning (DRL), används för att undersöka möjligheten att maximera CLV för denna typ av data. Studien fann att de bästa RNN-modellerna överträffade den naiva modellen i termer av precision i data där kunder är mer benägna att ändra sin försäkringspolicy. Modellerna lider dock av flera anmärkningsvärda begränsningar, så ytterligare forskning rekommenderas. Att välja kunder med hjälp av LSTM visade sig vara framgångsrikt när det gäller precision men inte känslighet vilket tyder på att det finns utrymme för förbättring. DRL-modellerna visade inte någon väsentlig förbättring vad gäller CLV-maximering.
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Purdy, Lisa Eileen. "Establishing a framework for mapping DQ8 restricted T cell epitopes for human diabetes autoantigens." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq22657.pdf.
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李維傑 and Wai-kit Lee. "Syntheses, photophysics and photochemistry of polynuclear d10 complexes of copper(I) and gold(I)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31234264.
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Lee, Wai-kit. "Syntheses, photophysics and photochemistry of polynuclear d10 complexes of copper(I) and gold(I) /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17665589.
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Johansson, Emanuel. "Relationen mellan designkvalitet och designintention : En tillämpning av design quality evaluation (DQE) i påbyggnadsprojekt." Thesis, Luleå tekniska universitet, Arkitektur och vatten, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83438.
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Påbyggnation är en typ av hållbar stadsutveckling som blir allt vanligare i Sverige. Ett av de gemensamma målen vid påbyggnation, likt andra byggprojekt, är att uppnå en viss förbestämd kvalitet. Designkvalitet kan ses som en del av kvalitetsmålet. Problemet är att designkvalitet är svårdefinierat, ändå finns det ett behov av att mäta och hantera den här typen av värde, dels för kunden och samhället, dels för representanter i design- och byggprocessen. För att tillgodose behovet kan en utvärdering av designkvalitet vara en möjlig lösning. Ett av de senaste verktygen för detta är design quality evaluation (DQE) wheel, utvecklat av Eilouti (2020). Verktyget kan användas för att dra lärdom av projekt vilket blir särskilt viktigt i mindre utforskade områden, till exempel påbyggnation. Frågan är: hur uppnås designkvalitet? Forskning indikerar att arkitekten spelar en central roll. Arkitekten är den aktör som genom sina designintentioner ska se till att kundens mål och behov uppfylls. Däremot finns det få empiriska stöd för kopplingen mellan designintention och designkvalitet. Därför är det relevant att undersöka hur begreppen förhåller sig till varandra. Undersökningen kan ge insikt i hur designkvalitet uppnås, främst genom ökad förståelse för hur arkitektens designintentioner påverkar det slutliga resultatet. För att säkerställa att designintentioner leder till uppnådd designkvalitet pekar forskning på att intentionerna måste kopplas till mätbara resultat. DQE kan vara en lösning som erbjuder dessa mätbara resultat. Examensarbetets syfte är att bidra med ökad förståelse för hur designkvalitet uppnås genom att undersöka relationen mellan designkvalitet och designintention. Undersökningen möjliggörs genom en tillämpning av DQE. Verktyget kan erbjuda den struktur som behövs för att erhålla arkitektens utvärdering av designkvalitet och ta reda på bakomliggande designintentioner. För att uppnå syftet används två primära metoder: först en litteraturundersökning, sedan en fallstudie. I den första delen jämförs och kontrasteras olika teoretiska synsätt på designkvalitet och designintention. Därefter föreslås en definition av begreppen som blir gällande i arbetets kontext. Arbetets andra del innebär en djupdykning i sju olika påbyggnadsprojekt där uppdragsansvarig eller handläggande arkitekt intervjuas. Intervjuerna genomförs för att erhålla arkitektens utvärdering av designkvalitet och ta reda på bakomliggande designintentioner. Resultatet analyseras i tre steg för att kunna dra slutsatser om relationen mellan designkvalitet och designintention. Litteraturundersökningen resulterar i två föreslagna definitioner. (Se avsnitt 3.1.4 respektive 3.3.4 för fullständiga definitioner.) Designkvalitet används i regel för att beskriva en byggnads goda egenskaper med avseende på design. Begreppet är svårdefinierat på grund av dess subjektiva karaktär och därmed omöjliga separation från personliga, samhällsenliga och kulturella förutsättningar. Designintention är en designers beskrivning av mål, syften eller orsaker bakom designrelaterade beslut. Designintentioner skapas utifrån en designers tolkning av kundens prioriterade mål. Resultatet blir därför en kombination av designerns och kundens värderingar. Fallstudien visar att estetik, stads- & miljömässig lämplighet samt identitet & karaktär är de parametrar som prioriteras högst av arkitekterna. Samma parametrar leder även till högst designkvalitet i arkitekternas utvärderingar. Resultatet talar för att arkitekternas prioriterade designintentioner tenderar att resultera i uppnådd designkvalitet. Det betyder att relationen mellan designkvalitet och designintention existerar och att arkitekten är nyckelpersonen i sammanhanget. Analysen indikerar att relationen utgörs av en problemlösande process där arkitekten ansvarar för att säkerställa att designintentionerna leder till uppnådd designkvalitet. Processen är känslig eftersom den påverkas av kundens vilja och arkitektens förmåga att tillämpa sina designintentioner i praktiken. Examensarbetet belyser vikten av arkitektens arbete från intention till slutlig produkt eftersom det kan främja designkvalitet i den färdiga byggnaden. Avgränsningen till påbyggnadsprojekt bidrar till att vidga tillämpningsområdet för designkvalitet och designintention. Tillämpningen av DQE var en förutsättning för examensarbetets genomförande. Däremot kan det argumenteras för att verktyget gör större nytta som diskussionsunderlag än för att kvantifiera designkvalitet.Vertical extensions of buildings are a type of sustainable urban development with increasing occurrence in Sweden. One of the commonly held goals when vertically extending a building, as in other construction projects, is to achieve a certain pre-determined quality. Design quality can be seen as a part of the quality goal. The problem is that design quality is difficult to define, still there is a need for measuring and managing this type of value, not only for the client and society, but also for actors within the design and building process. To satisfy the need an evaluation of design quality might be a possible solution. One of the most recent tools for this is the design quality evaluation (DQE) wheel, developed by Eilouti (2020). The tool can be used to learn lessons from a project which is especially important in less researched areas, e.g. vertical extensions of buildings. The question is: how is design quality achieved? Research indicates that the architect plays a crucial role. The architect is the actor who through their design intentions should ensure that the clients’ goals and needs are fulfilled. However, there are few empirical studies supporting the connection between design intentions and design quality. That is why it is relevant to examine how these concepts relate to one another. The examination can provide insight into how design quality is achieved, mainly by increased understanding of how the architects’ design intentions are affecting the result. To ensure that the design intentions lead to achieved design quality research imply that the intentions must be connected to testable outcomes. DQE might be a solution providing these testable outcomes. The purpose of this master thesis is to contribute with increased understanding of how design quality is achieved by examining the relation between design quality and design intention. The examination is enabled due to the application of DQE. The tool can offer a structure for acquiring the architect’s evaluation of design quality and finding out the underlying design intentions. To achieve the purpose two primary methods are being used: first a literature review, then a case study. The first part compares different theoretical viewpoints on design quality and design intention. Thereafter two definitions are proposed which are applicable within the context of this thesis. The second part takes a deeper dive into seven different vertical extension projects where each responsible architect is interviewed. The interviews are conducted to acquire the architect’s evaluation of design quality and to find out the underlying design intentions. The results are analysed in three stages in order to make conclusions about the relation between design quality and design intention. The literature review results in two proposed definitions. (See section 3.1.4 and 3.3.4 for the complete Swedish definitions.) Design quality is often used to describe a building’s good properties regarding design. The concept is difficult to define because of its subjective nature and therefore impossible separation from personal, societal, and cultural conditions. Design intention is a designer’s description of goals, purposes or reasons behind design related decisions. Design intentions are based on a designer’s interpretation of the client’s prioritised goals. The result is therefore a combination of the designer’s and the client’s values. The case study shows that aesthetics, urban & environmental fit, and identity & character are the parameters which the architects prioritise the highest. The same parameters lead to the highest design quality according to the architects’ evaluations. The results show that the architects’ prioritised design intentions tend to lead to achieved design quality. This means that the relation between design quality and design intention exists and that the architect is the key person in this context. The analysis indicates that the relation consists of a problem-solving process where the architect is responsible of ensuring that the design intentions lead to achieved design quality. The process is sensitive because it is affected by the client’s will and the architect’s ability to apply their design intentions in practise. This thesis highlights the importance of the architect’s work from intention to product because it can favour the design quality of the finished building. The demarcation to vertical extensions of buildings contribute to widen the areas of applicability for design quality and design intention. The application of DQE was a prerequisite for the realisation of this thesis. However, it can be argued that the tool is better used as a basis for discussion rather than to quantify design quality.
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Hunt, Philip. "A study of B → DK and D0 production using D0 → K+π-π+π-decays at LHCb." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:4b48ebc4-dd04-4741-8ab3-1ac8620f1cb0.
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A precision measurement of the CKM angle γ from tree-level processes is one of the principal goals of the LHCb experiment. The results from this study are compared to predictions from two different theoretical models and from the default LHCb tuning of the PYTHIA Monte Carlo event generator, and the results shown to be in good agreement. The cross-section results are also compared to an independent LHCb measurement. LHCb analyses rely on the ability to identify kaons and pions with a high efficiency and low mis-identification rate, achieved by two Ring Imaging Cherenkov (RICH) detectors. To ensure optimal performance of the RICH detectors, the time alignment of the Level-0 (L0) front-end electronics modules has been optimised using a combination of a pulsed laser system installed in the LHCb cavern and pp collision data. After the time-alignment procedure, the L0 modules have been time-aligned to within approximately ° 1ns across both detectors.
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尹俊偉 and Chun-wai Wan. "Spectroscopic properties and coordination chemistry of d10 metal complexes with the polypyridyl and naphthyridyl ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31223564.
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Wan, Chun-wai. "Spectroscopic properties and coordination chemistry of d10 metal complexes with the polypyridyl and naphthyridyl ligands /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22227301.
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Ho, Kin-ying. "Synthesis, characterization and spectroscopic properties of d6 and d10 metal complexes with pyridyl amine ligands /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20667905.
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Alwan, Seif. "The Effect of Fano Resonance on ExchangeInteraction in a DQD Junction with RashbaSpin-Orbit Coupling." Thesis, Uppsala universitet, Materialteori, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-379150.
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In this work, we investigate electronic transport through a double quantum dot junction, where each dot couple to external localized spins. The junction is embedded in between two metallic leads,functioning as continues electron reservoirs. The double quantum dotjunction forms in the junction a bonding and anti-bonding state, muchresembling the electronic structure of a molecule, hence provides in-sight to such systems. Due to the nature of the parallel coupling weexpect a reduced tunneling through the anti-bonding state as a resultof destructive interference as the tunneling is provided multiple path-ways through the molecule. We predict that signature effects arisecorrelating the quantum observable to the effective exchange couplingbetween the localized spin moment and the electronic structure of theDQD. We expect the Fano resonance to disappear entirely when the anti-bonding state is localized and the transmission is carried purely through the bonding state. We further investigate the effects of in-clusion of Rashba Spin-Orbit coupling, allowing decoherence in thetransport. Here, a further degree of freedom is available and morecontrol of the quantum interference and hence the signatures in theexchange is allowed.
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Bonnefond, Jean-Yves. "L'intervention dans l'organisation en clinique de l'activité : le dispositif "DQT" RENAULT à l'usine de Flins." Thesis, Paris, CNAM, 2016. http://www.theses.fr/2016CNAM1084/document.
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Cette thèse contribue à explorer une voie possible de transformation organisationnelle au service de la santé et de la performance par l’institution du conflit de critères sur la qualité du travail. Ce travail est issu d’une expérimentation réalisée avec l’entreprise Renault à l’usine de Flins dans le cadre d’une méthodologie développementale en psychologie du travail, sous les modalités de la clinique de l’activité. Cette expérimentation a donné lieu au développement et à l’institution d’un dispositif de Dialogue sur la Qualité du Travail (DQT) des opérateurs. Notre travail de recherche prend pour objet l’examen minutieux de ces résultats obtenus, de la genèse du dispositif à son institution dans l’organisation. Nous étudions alors quatre dimensions au centre des enjeux d'intervention et de transformation durable des organisations : le conflit de critères sur la qualité du travail, la fonction du conflit affectif dans l’activité, la performance dialogique de l’organisation et l'autorité professionnelle comme conditions de la performance concrète et de la santé. Nous concluons sur les perspectives ouvertes par cette thèse : d’une part la force motrice du conflit de critères sur la qualité du travail dans l’intervention en psychologie du travail, d’autre part la fonction de l’institution du dialogue sur ce conflit de critères pour la revitalisation des organisations contemporainesThis thesis contributes to explore a way of organizational transformation from the perspective of a joint development of health and efficiency. It is based on the institution of conflict criteria on the quality of work. This thesis comes from an experiment conducted with the Renault company in the Flins factory, using a developmental methodology in occupational psychology, under the terms of the Activity Clinic. This experiment resulted in the development and the establishment of a dialogue process on the Quality of operators Work. The object of our research consists to examine the practical results produced by this methodology, since the genesis of the device to its institution into the organization. We study four main dimensions at the center of intervention and sustainable transformation of organizations issues: the conflict criteria on the quality of work, the function of affective conflict in activity, and the dialogic performance and professional authority as conditions for performance and health. We conclude on the perspectives opened by this work : firstly, on the conflict criteria’s energy on the quality of work in the occupational psychology intervention ; Secondly, on the role of professional dialogues based on the quality of work in the revitalization process of contemporary organizations