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Dissertations / Theses on the topic 'Dlib'
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Hermkens, Anna-Karina. "The way of the objects analogical inference and the allocation of meaning and order in Lapita, Dongson and Lake Sentani material culture /." Website, 1997. http://www.papuaweb.org/dlib/s123/hermkens/_ma.html.
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Giay, Benny. "Zakheus Pakage and his communities indigenous religious discourse, socio-political resistance, and ethnohistory of the Me of Irian Jaya /." [Indonesia] : UNIPA-ANU-UNCEN PapuaWeb Project, 2002. http://www.papuaweb.org/dlib/s123/giay/%5Fphd.html.
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O'Hare, Martin. "The Indonesian military in Irian Jaya." [Canberra : Strategic and Defence Studies Centre, Research School of Pacific Studies, Australian National Univerity], 1991. http://www.papuaweb.org/dlib/s123/ohare2/%5Fma.html.
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Kirksey, S. Eben. "Saya makan sembarang (I eat anything) the changing world of the Oge Bage Mee /." [Sarasota, Fla.] : Division of Social Sciences, Division of Natural Sciences, New College of the University of South Florida, 2002. http://www.papuaweb.org/dlib/s123/kirksey1/%5Frk.html.
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Kjar, Renée Giay Benny. "The invisible aristocrat Benny Giay in Papuan history /." [Sydney, Australia] : Australiann National University, Discipline of Asian Studies, 2002. http://www.papuaweb.org/dlib/s123/kjar/%5Fba.pdf.
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Thesis (B.A.)--Discipline of Asian Studies, Australian National University, 2002.Title from thesis home page (viewed Dec. 6, 2004). Title from start screen (viewed Aug. 19, 2004). "December 2002."
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Godschalk, Jan Anthonie. "Sela Valley : an ethnography of a Mek society in the Eastern Highlands, Irian Jaya, Indonesia /." Amsterdam : Vrije Universiteit, 1993. http://www.papuaweb.org/dlib/s123/godschalk/00.pdf.
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Thesis (doctoral)--Vrije Universiteit te Amsterdam, 1993.Basic text in English; partial t.p. in Dutch; summaries in English, Dutch, and Una. "Stellingen" laid in. Includes bibliographical references (p. [157]-164) and index. Also issued online.
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Dasgupta, Sankarshan. "3D Face Reconstruction From Front And Profile Image." University of Dayton / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1626689472561706.
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Malý, Ondřej. "Detekce zahalených tváří v obraze." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413097.
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The aim of this work is to study and test current methods for face detection on veiled faces and evaluate the results. In the first chapter, five selected methods are theoretically analyzed and in the second chapter the individual methods are evaluated, both for the Wider Face file and for the actual set of photos with veiled faces. Subsequently, the Dlib CNN method is improved for better detection of veiled faces and reprogrammed to detect the degree of veil from the tested image
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Skoták, Jiří. "Hra pro mobilní telefon s využitím rozpoznání rysů tváře." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403200.
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This master's thesis focuses on smartphone game for iOS, which uses recognition of face features and other information, which can be obtained from a smartphone's camera and sensors. This work describes a few approaches for real-time face detection and then introduces and compares possibilities for such task on iOS. Moreover, the thesis contains a draft of the final game and its levels. The game showcases various technologies in its levels such as object detection, processing an image color and others. Finally, the thesis introduces the final form of the game that is released and available on the App Store.
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Hřebíček, Pavel. "Mobilní aplikace pro rozpoznání leukokorie ze snímku lidského obličeje." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403140.
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The goal of this thesis is to design and implement a multiplatform multilingual mobile application for detecting leukocoria in an image of human face for iOS and Android platforms. Leukocoria is a whitish light of the pupil, which can be seen on the photo when the flash is used. Early detection of this symptom can save human eyesight. The application itself allows to analyze a user's photo and detect the presence of leukocoria. The goal of the application is to analyze eyes of the human, from which the mobile application name - Eye Check is derived. React Native framework was used to create a multiplatform mobile application. The Dlib library was chosen for human face and eye detection, the OpenCV library for working with the photo. The convolutional neural network was used to classify the eyes for the possible presence of leukocoria. Client-Server communication is solved using the REST architecture. The result is a mobile application that detects leukocoria and allerts the user to visit his doctor if leukocoria is detected.
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Lee, Annette C. "The attrition rate at DLI." Thesis, Monterey, California: Naval Postgraduate School, 1990. http://hdl.handle.net/10945/27621.
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Approved for public release; distribution unlimited.The primary purpose of this research is to identify if a correlation exists between the U.S. Army selection procedure for enlisted soldiers in the ranks of E-1 through E-4 attending the Defense Language Institute and the academic outcome. This thesis focuses on two specific concepts: (1) how the U.S. Army currently identifies those soldiers to be trained as Russian linguists; and (2) whether the Army needs to incorporate changes to its current identification procedures currently used to select soldiers to attend the Russian linguist course at Defense Language Institute, Foreign Language Center (DLIFLC) are examined. A comparison is then made with the soldiers ability to successfully complete the courses in which enrolled. The purpose is to identify the causes that influence attrition. Secondly, this study analyzes the enrollment data produced by DLIFLC to determine if any reliable correlation exists between the current linguist identification procedures and the success or failure of soldiers enrolled in the Russian language course.
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Jelen, Vilém. "Biometrická brána využívající kamer pro identifikaci osob." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403188.
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Biometric gateways are used to quickly and accurately identify people. Of the biometric characteristics, iris, face and fingerprints are commonly used. By combining them, better identification results can be achieved. The aim of this thesis is to create such a biometric gateway together with the control application. A combination of iris of both eyes and face is used, which is captured by cameras from three angles to increase accuracy. Neural networks are used to detect and extract face features. Iris recognition is realized using Daugman's algorithm.
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Swan, Andrew. "Initiation of developmental asymmetry by Drosophila Bic-D, DLis-1 and microtubules." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0021/NQ55384.pdf.
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Saraiva, Maria Inez Sodré. "De onde venho? Para onde vou? Conhecendo o aluno do PROVOC DLIS." EPSJV, 2010. https://www.arca.fiocruz.br/handle/icict/8900.
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Fundação Oswaldo Cruz. Escola Politécnica de Saúde Joaquim Venâncio. Laboratório de Iniciação Científica na Educação Básica
Esta dissertação apresenta uma análise da trajetória dos jovens participantes do Programa de Vocação Científica/Programa de Desenvolvimento Local Integrado e Sustentável /Escola Politécnica de Saúde Joaquim Venâncio/Fundação Oswaldo Cruz desde 2003 a 2008. Foi realizada uma revisão da literatura sobre políticas públicas e juventude objetivando discutir a construção social e política dos programas voltados para esta população, bem como a identificação de marcos históricos e conceituais que orientam as políticas sociais da Fundação Oswaldo Cruz. Como estratégia de pesquisa de campo foram realizadas entrevistas com gestores Fiocruz e com coordenadores de projetos e de programas institucionais voltados para a comunidade de Manguinhos, bem como, a realização de um grupo focal com egressos do PROVOC/DLIS com o objetivo de analisar as expectativas desses alunos ao ingressarem e ao final do programa, assim como, identificar o percurso institucional e pessoal do aluno e as possíveis repercussões sociais, familiares e profissionais dos jovens que participam do Programa. Conclui enfatizando posicionamentos e sugestões que contribuam para que novos caminhos possam ser pensados na questão da inserção de jovens de comunidades carentes em Programas de Vocação Científica mantidos por instituições de pesquisa.
This work presents an analysis of the trajectory of youth participants of Scientific Vocation Program - Integrated and Sustainable Local Development Programme of Joaquim Venancio Polytechnic Health School of Oswaldo Cruz Foundation (PROVOC DLIS / EPSJV / FIOCRUZ) program from 2003 to 2008. We performed a literature review on public policies and youth aimed to discuss the social and political construction of programs for this population, and the identification of historical and conceptual foundations that guide the social policies of FIOCRUZ. As a research strategy, interviews were conducted with managers of Fiocruz and with managers of projects and institutional programs aimed at the community of Manguinhos, as well as, conducting a focus group with alumnal of PROVOC / DLIS with the aim of analyzing the expectations of these students at entry and at the end of the program, as well as tracing institutional and student's personal and possible social, familiar and professionals repercussions of these who participate in the program. Concludes by emphasizing positioning and suggestions to help ensure that new ways can be thought on the issue of integration of young people from poor communities in Scientific Vocation Program maintained by research institutions.
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Nascimento, Mirian Guedes. "Sustentabilidade cultural no âmbito do desenvolvimento local - uma análise do DLIS/SEBRAE-SE." Universidade Federal de Sergipe, 2005. https://ri.ufs.br/handle/riufs/4323.
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The northeast part of Brazil has been the stage for many public policies which are presented as a solution to make the regional economy dynamic and promote the improvement of the quality of life of the population. The execution of the methodology DLIS (Desenvolvimento Local Integrado e Sustentável) Integrated and Sustainable Local Development stands out in this context defining local development strategies through the participation of the communities. From the participative diagnosis in which local problems, vocations and potentialities are pointed out, a development plan is elaborated and a local agenda is extracted. The priority actions of this agenda must be executed by many partners
of federal, state and municipal spheres and local civil society organizations. This methodology has been introduced in 26 of the 75 Brazilian municipalities. In the state of Sergipe, it is particularly performed by SEBRAE (Serviço Brasileiro de Apoio às Micro e Pequenas Empresas) - Brazilian Micro and Small Business Support Service. The development plans, mainly those whose action scale is the locality, can in fact contribute to local sustainable development, if the geographical, political, cultural and historical singularities are considered, and if the participation of all the development actors is assured. Our work is focused on the evaluation of DLIS methodology, without understanding it as a certifiable model of sustainable development to be pursued for all the municipalities. In accordance with our understanding of the importance of this
methodology as a development policy and with the necessity of evaluating it under the concrete perspective of its contents, our work attempted to evaluate the impacts of the
actions introduced by DLIS/SEBRAE concerned with cultural sustainability and local participation, seen as essential to local sustainable development, taking as case study the
municipality of Canindé do São Francisco, in the state of Sergipe and, for that, we considered some setbacks. We analysed that the way of life, the cultural values and the
local social actors identities were not taken into consideration in this process. The expectations in relation to local sustainable development were not considered, as well. We
have also analysed the insertion degree of local social actors in the participative process and the treatment given to the locality by the methodology. We see this study as a
contribution to the evaluation of participative social policy methodologies through a new relation between state and society, and also, as a fertile theme that points out the insertion of the cultural dimension in development plans. The results can be relevant even for policy makers, local development financiers and for non-governamental organizations interested in knowing the impacts of these actions from the evaluation and perception of the alleged
beneficiaries.A região Nordeste vem sendo alvo de diversas políticas públicas apresentadas como soluções para dinamizar a economia regional e promover a melhoria da qualidade de vida da população. Nesse contexto, vem se destacando a execução da metodologia DLIS (Desenvolvimento Local Integrado e Sustentável) que define estratégias locais de desenvolvimento através da participação das comunidades. A partir do diagnóstico participativo no qual são destacados os problemas, as vocações e potencialidades do local é elaborado um plano de desenvolvimento do qual é extraída a agenda local com ações prioritárias que deverão ser executadas por vários parceiros das esferas federal, estadual, municipal e organizações da sociedade civil local. Implantada em todo país, em Sergipe, através da atuação do SEBRAE (Serviço Brasileiro de Apoio às Micro e Pequenas Empresas) a metodologia já foi implantada em 26 dos 75 municípios. Os planos de desenvolvimento, principalmente os que têm como escala de atuação o local, podem de fato contribuir para o desenvolvimento sustentável local, se forem consideradas as singularidades em termos de fatores geográficos, políticos, históricos e culturais e ainda, se for garantida a participação de todos os atores de desenvolvimento. Nosso trabalho está focado na avaliação da metodologia DLIS, sem, no entanto, entende-la como um modelo legitimador do desenvolvimento sustentável a ser perseguido por todos os municípios. Face nosso entendimento da importância dessa metodologia enquanto política de desenvolvimento e a necessidade da mesma ser avaliada sob a perspectiva substantiva de seus conteúdos, nosso trabalho procurou avaliar os impactos das ações implementadas pelo DLIS/SEBRAE no que diz respeito à sustentabilidade cultural e à participação local, preconizadas como indispensáveis ao alcance do desenvolvimento sustentável local, tomando-se como estudo de caso o município de Canindé do São Francisco/SE e, para tal, debruçamos nossas análises a partir de alguns vieses. Analisamos que o modo de vida, os valores culturais, a identidade dos atores sociais locais não foram fatores considerados no processo. Seus anseios em relação ao desenvolvimento sustentável local não foram contemplados. Desvendamos ainda o grau de inserção dos atores sociais locais no processo participativo e o tratamento conferido ao local pela metodologia. Entendemos esse estudo como contribuição à avaliação de metodologias de políticas sociais participativas que propõem uma nova relação entre Estado e sociedade, mas também, como tema fecundo que ressalta a inserção da dimensão cultural nos planos de desenvolvimento. Os resultados podem ser relevantes ainda para os formuladores de políticas públicas sociais, agentes de financiamento ao desenvolvimento local e organizações do terceiro setor interessados em conhecer os impactos dessas ações a partir da avaliação e percepção dos seus supostos beneficiários.
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Conti, Virginia. "Tecniche elettroanalitiche-chemiometriche applicate alla tipizzazione dli oli monovarietali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6079/.
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Il presente lavoro di tesi si propone di verificare se le tecniche elettrochimiche consentano di effettuare una classificazione del cultivar dell’olio.
In particolare si vuole proporre un nuovo metodo per eseguire misure voltammetriche con un microelettrodo di platino direttamente in campioni di olio extravergine di oliva a cui sono aggiunti RTILs (Room Temperature Ionic Liquids) per rendere le matrici adeguatamente conducibili e quindi adatte per le analisi.
I voltammogrammi ciclici dovranno poi essere elaborati attraverso diverse tecniche chemiometriche con l’obiettivo di discriminare i campioni sulla base della loro origine.
Si studieranno quindi delle metodologie analitiche che potrebbero consentire di riconoscere l'origine delle olive usate per produrre un olio e di verificarne l'aderenza alle normative o ai disciplinari delle DOP e l'eventuale presenza di materiale estraneo. Le ricerche hanno l’obiettivo di individuare nell'olio il “fingerprint” da cui sarà possibile risalire alle varie cultivar di provenienza, identificando la composizione e l'origine dell'olio, ciò consentirà inoltre di difendere i consumatori da eventuali frodi commerciali.
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Lima, Adriana Rosado Maia de. "Desenvolvimento Local Integrado e Sustentável DLIS: um olhar sob a perspectiva dos agentes implementadores." Universidade Federal da Paraíba, 2006. http://tede.biblioteca.ufpb.br:8080/handle/tede/7200.
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Previous issue date: 2006-10-25Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The Local Development Integrated and Sustainable - DLIS represented in the 1990s in Brazil, a strategic investment in the design and operation of public policies to combat poverty and social exclusion, sought to promote involvement and participation of civil society, building partnerships, establishing a vision of development more inclusive and integrated, surveillance and social control in the process of setting priorities in allocation of public resources in order to initiate a nationwide process of development more sustainable. This study focused on the theoretical debate, historical facts and conceptual categories relevant to understanding the new meaning that space takes place before an international context of economic globalization of capital and strong influence of neoliberalism in the planning of public policies of the Brazilian state. We attempted to ascertain the perceptions of implementing agents (governmental and non governmental organizations) the methodological strategy concerned about the efficiency of the process of community organization through the political role of civil society in local space. This was an analytical research of a qualitative approach, carried out through field study. As procedures, cite the literature, analysis of official documents, specific legislation. As a tool for data collection was used semi-structured interviews, participant observation and oral history. The interviews were conducted between November 2005 and January 2006, together with research subjects in the municipalities of Pedro Régis (forest area) and Nova Olinda (interior). The sample (n = 14) was intentional because it encompassed only professionals who have direct or indirect link with the municipalities that joined the expansion of the Active Community Program, the state of Paraíba. It was concluded that there was a dissociation between the principles and objectives of the strategy of the DLIS government with the intention of effecting an articulated process and sustainable development, which is useful in principle the rationalization of public resources and strengthening of visions of hegemonic power which showed a fragmented conception of development.
O Desenvolvimento Local Integrado e Sustentável DLIS, representou no Brasil dos anos 90 uma inversão estratégica na concepção e operacionalização de Políticas Públicas voltadas ao enfrentamento da pobreza e exclusão social. Buscou promover envolvimento e participação da sociedade civil, constituir parcerias, instituir uma visão de desenvolvimento mais abrangente e integradora e promover a fiscalização e controle social no processo de definição de prioridades na alocação de recursos públicos desencadeando em âmbito nacional um processo de desenvolvimento mais sustentável. O foco do presente estudo foi o debate teórico, fatos históricos e categorias conceituais relevantes para a compreensão da ressignificação que o espaço local adquire diante de um contexto internacional de globalização econômica do capital e forte influência do neoliberalismo no planejamento das políticas públicas do Estado brasileiro. Buscou conhecer as percepções dos agentes implementadores (governamentais e não governamentais) da metodologia em questão sobre sua eficácia no processo de organização comunitária, por meio da atuação política da sociedade civil, no espaço local. Tratou-se de uma pesquisa analítica, de cunho qualitativo, realizada através de estudo de campo. Como procedimentos aplicados citam-se a pesquisa bibliográfica, análise de documentos oficiais e legislação específica. Como instrumento de coleta de dados foram utilizadas entrevista semi-estruturada, observação de participante e história oral. As entrevistas foram realizadas entre os meses de novembro de 2005 a janeiro de 2006, junto aos sujeitos da pesquisa nos municípios de Pedro Régis (zona da mata) e Nova Olinda (sertão). A amostra (n=14) foi intencional porque englobou apenas profissionais que tiveram vinculação direta ou indireta com os municípios que aderiram à expansão do Programa Comunidade Ativa, no Estado da Paraíba. Concluiu-se que existiu uma dissociação entre os princípios e objetivos da metodologia do DLIS com a intenção governamental de efetivar um processo articulado e sustentável de desenvolvimento, sendo útil a princípio a racionalização dos recursos públicos e reforço de visões hegemônicas de poder, o que evidenciou uma concepção fragmentária de desenvolvimento.
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Ait-Hassaine, Ahmed. "Le Haouz de Marrakech, une région déshéritée : émigration et exode rural : cas des Ouled Dlim." Paris 10, 1986. http://www.theses.fr/1986PA100017.
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FREITAS, Nádia Magalhães da Silva. "Desenvolvimento local e capital social: uma análise interdisciplinar do processo de indução do DLIS no Estado de Roraima." Universidade Federal do Pará, 2008. http://www.repositorio.ufpa.br:8080/jspui/handle/2011/1934.
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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
A new trend in terms of actions for the local development has been configured. These actions consider the territory and its actors. It is in this context that the inductions methodology of the Integrated and Sustainable Local Development (DLIS, from the portuguese Desenvolvimento Local Integrado e Sustentável) arises. This Program is a strategy of participatory induction for the development, which mobilizes communities resources, that in partnership with the State (in its three levels) and the market, reaches diagnostics and identify potential vocations, prepare integrated development plans, in the perspective of the subjects involvement as proponents and protagonists of a social action in their territories. With this study it was aimed to understand the multidimensionality of the DLIS process in the state of Roraima, and at the same time, looking for the causal link between the socio-economic trajectories (results) of DLIS and social capital. The survey is characterized as qualitative research. The case study method was applied, involving the municipalities of Rorainópolis, Uiramutã, Baliza and Pacaraima. It was adopted three dimensions analytical contextual, which are: conceptual, implementation and of impact. In the evaluation of social capital were considered as variables the participation, trust, cooperation and networks. During the data interpretation, the following approaches were employed: contextual analysis, descriptive analysis, differences in proportions analysis and correspondence analysis. The survey results showed that some concepts and categories employed by the Program, while important, have some failures. Two municipalities, Rorainópolis and Uiramutã, were considered as good results. This, because they combine a number of issues that expressed desirable conditions to turn the DLIS effective with its multiple dimensions. Moreover, the municipalities of Baliza and Pacaraima were classified as bad results municipalities. The results of the DLIS in Rorainópolis and Uiramutã are linked to the social capital (positive relation). Despite of the extensive literature that assigns the relevance of the social capital, it does not have, yet, satisfactory instruments to measure the social capital. In this context and in fact, the understanding of these results represents merely an approximation.
Uma nova tendência em termos de ações para o desenvolvimento vem se configurando. Trata-se de ações que levam em conta o território e seus atores. Nesse âmbito, insere-se a metodologia de indução do Desenvolvimento Local Integrado e Sustentável (DLIS). Esse Programa de política pública se constitui uma estratégia participativa de indução do desenvolvimento, pela qual se mobilizam recursos das comunidades, que em parceria com o Estado (em seus três níveis) e o mercado, realizam diagnósticos, identificam potencialidades e vocações, elaboram planos integrados de desenvolvimento, na perspectiva de envolvimento dos sujeitos como proponentes e protagonistas da ação social em seus territórios. Com este trabalho, buscou-se compreender a multidimensionalidade do processo de DLIS, no estado de Roraima, procurando, ao mesmo tempo, o estabelecimento de um nexo causal entre as trajetórias sócio-econômicas (resultados) do DLIS e o capital social. A pesquisa se enquadrou na modalidade qualitativa. Adotou-se como estratégia metodológica o estudo de caso, envolvendo os municípios de Rorainópolis, Uiramutã, Baliza e Pacaraima. Três dimensões analítico-contextuais foram adotadas, quais sejam: conceitual, de implementação e de impacto. Na avaliação do capital social, as variáveis participação, confiança, cooperação e redes foram consideradas. Na interpretação dos dados, as seguintes abordagens foram utilizadas: análise contextual, análise descritiva, análise das diferenças de proporções e análise de correspondência. Os resultados da pesquisa revelaram que alguns conceitos e categorias adotados pelo Programa, embora relevantes, apresentam alguma ordem de problema. Dois municípios, Rorainópolis e Uiramutã, foram considerados municípios de bons resultados. Isso porque atenderam a um conjunto de questões que expressavam condições desejáveis para que o desenvolvimento local integrado e sustentável, em suas múltiplas dimensões, se efetivasse. Por seu turno, os municípios de Baliza e Pacaraima foram classificados como municípios de maus resultados. Os resultados do DLIS em Rorainópolis e Uiramutã estão associados ao capital social (relação positiva). A despeito da extensa literatura que trata da relevância desse tema, não se têm, ainda, instrumentos satisfatórios para medir capital social. Nesse contexto, entendese que estes resultados representam, de fato, uma aproximação.
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Vargas, Daniel Fontan da Silva. "Desenvolvimento local integrado e sustentável contribuição para a construção do índice de DLIS: estudo comparativo dos concelhos portugueses." Master's thesis, Instituto Superior de Ciências Sociais e Políticas, 2014. http://hdl.handle.net/10400.5/6592.
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Tese de Mestrado em Gestão e Políticas PúblicasA promoção do desenvolvimento é um compromisso assumido por decisores políticos, organizações sociais e cidadãos em geral. A criação de mecanismos de monitorização e avaliação do desenvolvimento local assumem particular importância para a concretização operacional dos princípios subjacentes à integração e sustentabilidade das comunidades. Neste trabalho é efetuado a abordagem ao conceito de Desenvolvimento Local Integrado e Sustentável – DLIS – como uma estratégia de transformação e evolução da sociedade e o objetivo pretendido foi contribuir para a construção do índice que permita quantificar e percecionar o nível de DLIS dos concelhos portugueses. O índice proporciona aos decisores políticos avaliar as áreas que carecem de atuação de políticas públicas e auxilia na perceção das boas práticas de outros municípios. Foram definidas seis dimensões que explicam, no seu conjunto, o DLIS e realizaram-se uma série de testes para aferir os indicadores com potencial de contribuição para a construção do índice. Posteriormente foram calculadas as dimensões apoiado em aplicações de análise fatorial de componentes principais. As regiões de Lisboa e do Norte apresentam os melhores valores nas várias dimensões do DLIS, sendo que, as restantes têm na sua maioria, resultados nas dimensões do DLIS inferiores à média
Promoting development is a commitment made by policy makers, social organizations and citizens in general. The creation of mechanisms for monitoring and evaluation of local development are of particular importance to the achievement of operational principles underlying the integration and sustainability of communities. In this work it is approached the concept of Integrated and Sustainable Local Development – DLIS – as a strategy of transformation and evolution of society. The intended goal was to contribute to the construction of the index that allows to quantify and perceive the level of DLIS of Portuguese municipalities. The index allows policy makers to assess areas needing action of public policies and helps in perception of good practices from other municipalities. Six dimensions were defined that explain, as a whole, the DLIS and a series of tests were conducted to measure the indicators with the potential to contribute to the construction of the index. Subsequently, it was calculated the dimensions supported by analysis applications factorial. The regions of Lisbon and the North have the best values in the various dimensions of DLIS, and the rest have mostly results in the dimensions of DLIS below average.
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Addou, Fouzi. "Métallisation de guide d'onde en matériau composite à matrice époxy par un procédé DLI-MOCVD." Thesis, Toulouse, INPT, 2017. http://www.theses.fr/2017INPT0081/document.
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La fabrication de guides d’ondes à partir d’un matériau composite CFRP isolant, nécessite de rendre la surface interne conductrice électriquement. Cela peut s’effectuer par métallisation, mais des verrous technologiques apparaissent en raison de la géométrie complexe associée à une surface inerte. Le CFRP est composé d’époxy dont la température de transition vitreuse est de 216 °C, ce qui limite le choix des techniques de métallisation. De plus, l’énergie de surface du polymère qui compose la surface du CFRP est plutôt faible (20-40 mJ/m2) et non polaire, ce qui conduit à une adhérence faible des revêtements métalliques. Le procédé DLI-MOCVD est utilisé pour le dépôt du revêtement métallique car il combine un contrôle rigoureux des débits de réactifs, des vitesses de croissance élevées et il est adapté pour revêtir des substrats tridimensionnels. Le choix du métal (le cuivre) est basé sur un savoir-faire antérieur de l’équipe de recherche, pour la possibilité de le déposer à une température bien inférieure à 216 °C, et bien entendu pour son excellente conductivité électrique et sa résistance au vieillissement ambient. Le film de Cu est élaboré à partir du précurseur organométallique (hfac)Cu(MHY), développé par P. Doppelt au CNRS. Ce précurseur qui se présente sous forme liquide à Tambiante, est dilué dans de l’octane anhydre pour pouvoir être injecté par le système DLI. Après avoir implémenté un réacteur dédié au travaux de la thèse, une étude de cinétique chimique du dépôt à partir du précurseur a permis de définir les conditions expérimentales optimales ; notamment la température de dépôt fixée à 195 °C. Les revêtements obtenus sont partiellement couvrants et sont conducteurs. Leur adhérence avec le substrat est nulle. Par conséquent, on sélectionne puis on teste différents prétraitements du substrat afin de modifier la morphologie et la réactivité de la surface CFRP. On montre à travers six prétraitements que la formation de rugosité de surface favorisant l'ancrage mécanique est un caractère prépondérant pour l’amélioration de l’adhérence, par rapport à la modification chimique. Les deux prétraitements les plus performants sont le traitement par voie humide CircupositTM et le traitement in situ à l’O3 A ce stade, les films sont conducteurs et adhérents mais ils ne mouillent pas intégralement la surface du composite lors du dépôt. On démontre alors que l’injection d’un précurseur de cobalt (Co2(CO)5) en alternance avec le dépôt de Cu permet d’obtenir un revêtement de cuivre métallique, pur à plus de 98 %, couvrant, conducteur et adhérent. A ce stade, le rôle du précurseur de Co n’est pas clairement établi. Néanmoins, les études préliminaires d’industrialisation du procédé consistant à améliorer les rendements et vitesses de croissance sont entreprises. Notamment, les coûts sont abaissés en remplaçant le solvant octane. Avec ce solvant, le dépôt de Cu est adhérent sans prétraitement préalable de la surface du substrat. A noter que le précurseur de Co est toujours nécessaire pour assurer une couverture complète de la surface CFRP. C’est dans ces conditions de dépôt, et après quelques ajustements paramétriques que les premiers guides d’ondes de 60 mm sont revêtus. Les résultats des tests de cyclage thermique étant positifs, la longueur des guides d’ondes à revêtir est augmentée à 300 mm, dimension minimale pour pouvoir effectuer des tests de transmission des ondes radiofréquences : la propriété finale. Cette modification géométrique requière une phase d’optimisation plus complexe afin de garantir l’uniformité en épaisseur et en propriétés électriques sur toute la longueur. Les guides d’ondes de 300 mm métallisés passent les cyclages thermiques avec succès. Les tests radiofréquences indiquent un taux de transmission des ondes < 30 dB, ce qui est tout à fait acceptable d’un point de vue applicatif. En revanche, les pertes sont importantes en comparaison avec l’existant, mais de nombreuses pistes d’améliorations sont proposéesThe manufacturing of waveguides from insulating C fibers reinforced polymer composites necessitates to render internal surfaces electrically conductive. This can be achieved by metallization but technological bottlenecks arise due to the complex geometry and the chemical inertia of the surface. The CFRP matrix is composed of RTM6 epoxy whose glass-transition temperature equals 216 °C, limiting the choice of metallization techniques. Additionally, the surface energy of the polymer (constituting the surface of the CFRP) is low (20-40 mJ/m2) and non-polar, i.e. a poor adherence is expected for metallic coatings. A DLI-MOCVD process is used to form the metallic coating because it combines a good control of reactive fluxes, high deposition rates, and because it is relevant for the coating of three-dimensional substrates. The choice of the metal (Cu) is dictated by the anterior know-how of the research group, by the possibility to deposit at a temperature well below 216 °C, and because Cu shows an excellent electrical conductivity and a good resistance to ambient ageing. The Cu film is formed from the organometallic precursor (hfac)Cu(MHY), developed par P. Doppelt at CNRS (Paris). The precursor is diluted in anhydrous octane to make it injectable by DLI. After the mounting and implementation of the DLI-MOCVD reactor dedicated to the PhD work, a study of the chemical kinetics of the deposition from this precursor helped in the definition of the optimal conditions; noticeably the deposition temperature fixed at 195 °C. The coatings are partially covering and interfacial adherence is poor, but they are conductive. Consecutively, we identify, develop and test several pretreatments in order to modify the topography and reactivity of the CFRP surface. Based on 6 recipes, we show that mechanical anchorage is preponderant over the chemical reactivity to improve the adherence. The two best pretreatments are the solution chemistry treatment CircupositTM, and the in situ treatment with O3. At this stage of the work, Cu films are conductive and adherent but they do not wet the entire composite surface, even after long deposition duration. We then demonstrate that the injection of a Co precursor (Co2(CO)5) alternating with the Cu deposition leads to the formation of a pure metallic Cu film (> 98%) which is covering, conductive and adherent. The role of the Co precursor is not yet established. Nevertheless, we start the preliminary process industrialization studies consisting in the improvement of the growth rate and the yield. Noticeably, costs are decreased by replacing the octane solvent. With it, the Cu coating is adherent without any pretreatment of the substrate surface! The Co precursor is still necessary to ensure the proper covering of the entire surface, though. In these conditions, and after adjustments of some parameters, the first 60 mmlong waveguides are coated. The thermal cycling resistance is excellent. Therefore, waveguides length is increased to 300 mm, the minimum dimension for the radiofrequency transmission tests (final property) to be correct. The increase of length causes a complex adaptation of the process in order to guarantee the deposition of a uniform coating over the length, in terms of thickness and electrical properties. Radiofrequency tests result in a stationary waves rate < 30 dB, which is acceptable at the industrial level. Yet, losses are too important in comparison with current waveguides, but many proposals are formulated to improve our solution
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Mungkalasiri, Jitti. "Elaboration par DLI-MOCVD de dépôts nanocomposites TiO2-M (M = Ag, Cu) et propriétés antibactériennes de ces surfaces solides." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT006G/document.
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La présence de bactéries et biofilms est une préoccupation permanente dans de nombreux domaines. Ils sont à l’origine de nombreux faits d’actualité qui ont un coût important pour le système de santé. L’objectif de notre travail visait à élaborer des films nanocomposite transparents contenant des particules métalliques nanométriques d'élément antibactérien (Ag ou Cu) immergées dans une matrice d’oxyde (TiO2). La méthode de dépôt DLI-MOCVD (Direct Liquid Injection-Metal Organic Chemical Vapor Deposition) a été employée pour élaborer les films composites. Ce procédé permet le contrôle de la fraction molaire des précurseurs injectés dans le réacteur CVD et de revêtir des supports 3D (poreux). La croissance et la structure du dioxyde de titane (TiO2) sont influencées par la présence du précurseur contenant l’élément antibactérien. La fraction molaire du précurseur (Ag ou Cu) modifie les caractéristiques physico chimiques et structurales des dépôts. L'activité antibactérienne est mesurée selon la norme JIS Z 2801:2000 avec S. aureus et E. coli en l’absence de lumière. Des essais antibactériens spécifiques ont été optimisés afin d'évaluer leur activité proche de condition réelle. La composition des dépôts influence fortement l’activité antibactérienne d’inactif à bactéricide. Des corrélations entre la microstructure et la composition des films et leurs propriétés antibactériennes sont discutéesThe presence of bacteria and biofilms is permanent concern in many fields. Their presences are at the origin of many events which have high costs for the health system. In this objective, this work aimed to elaborate transparent nanocomposite thin films which are composed of nanometric metallic particles of antibacterial element (Ag or Cu) embedded in an oxide matrix (TiO2). The DLI-MOCVD process (Direct Liquid Injection-Metal Organic Chemical Vapour Deposition) was used to elaborate these thin films. This process allows the quantity of precursors injected into the CVD reactor to be controlled and porous body to be coated. The growth mechanisms and the structure of the Titanium dioxide (TiO2) are influenced by the presence of the organic precursor which contains the antibacterial element. The mole fraction of precursor (Ag or Cu) modifies the physico-chemical and structural properties of films. The antibacterial activity was tested according to the standard JIS Z 2801: 2000 with S. aureus and E. coli without light Specific tests were optimised in order to evaluate their activity in environments more representative. The composition of coatings impacts strongly the antibacterial activities from inactive to bactericidal properties. Correlations between the microstructure and composition of films and their antibacterial properties are discussed
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Zanfoni, Nicolas. "Films nanométriques poreux élaborés par DLI-CVD comme catalyseurs de mu-PEMFC : une alternative au tout platine ?" Thesis, Dijon, 2016. http://www.theses.fr/2016DIJOS065/document.
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Ce travail porte sur le développement de protocoles de croissance par CVD à injection directe de liquide (DLI-CVD) de films catalytiques poreux potentiellement utilisables dans les piles à combustible de type PEMFC. Les objectifs étaient de contrôler et de réduire au maximum la charge en platine, d’obtenir des matériaux à grande surface spécifique, c'est-à-dire très poreux, mais aussi d’utiliser des précurseurs à bas coût.Dans un premier temps, le platine a été promu par de l’oxyde de cérium, matériau qui possède lui-même des propriétés catalytiques. L’optimisation des paramètres de croissance a montré le rôle majeur de la température de dépôt mais aussi du flux des précurseurs sur la morphologie finale des films. Un dopage contrôlé en platine de la surface de l’oxyde de cérium a ainsi pu être mis au point à partir du dépôt simultané de cérine et de platine. Le flux de précurseur du platine a alors permis d’ajuster la charge et l’état d’oxydation de cet élément au sein des films sans pour autant modifier leur porosité. Il est, par exemple, possible d’élaborer des films minces d’oxyde de cérium composés de particules nanométriques dopées en extrême surface avec 5 % de platine à l’état +II. L’effet du flux de précurseur sur l’état d’oxydation du platine a été confirmé pour le système Pt/TiO2. Dans un second temps, des oxycarbures de tungstène ont été synthétisés de façon à éliminer totalement le platine du catalyseur. Un procédé en deux étapes a été mis au point permettant d’obtenir des dépôts d’oxycarbure de tungstène possédant de grandes surfaces spécifiques en déposant un film utra-mince et conforme d’oxycarbure sur une couche poreuse d’oxyde de tungstèneThis work is focused on development of growth protocols by direct liquid injection chemical vapor deposition (DLI-CVD) of catalytic porous films which could be used in proton exchange membrane fuel cells (PEMFC). The aim of this work was to reduce or even proscribe platinum in catalysts having large specific surface area i.e. being very porous. Besides, the aim is also to use mainly low cost precursors.Cerium oxide, which is a material widely used as catalyst, has been chosen to partially substitute platinum. Porous CeO2 layers were obtained by the optimization of processing parameters such as deposition temperature or precursors flow rates. Controlled platinum doping of cerium oxide surface has been obtained from deposition of ceria and platinum at the same time. The platinum precursor flow rate has allowed adjusting the load and the oxidation state of Pt in films without changing their porosity. For example, it was possible to synthesize thin cerium oxide films composed of surface Pt doped nanoparticles. In such a case, the Pt content is 5% in top most layers and its oxidation state is +II. The effect of precursor flow rate on the platinum oxidation state was confirmed from the study of the Pt / TiO2 system. Finally, platinum has been fully replaced by tungsten oxycarbide. A two steps process has been developed to obtain porous oxycarbide layers by depositing a conformed tungsten oxycarbide ultra-thin film on a porous tungsten oxide layer
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Astié, Vincent. "Mise en place d'un procédé industriel de dépôt épitaxié de niobates alcalins." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCD008.
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Le passage aux prochaines générations de télécommunications devra nécessairement passer par l’adoption de nouveaux matériaux piézoélectriques sous forme de couche minces. Justement, dans cette thèse, nous nous sommes intéressés à l’épitaxie en phase vapeur aux organométalliques par injection liquide directe (EPVOM-ILD) de couches minces de niobate de lithium (LiNbO3), matériau ferroélectrique aux propriétés exceptionnelles, notamment acoustiques et optiques. Le contrôle fin de la microstructure et de la composition des films est un paramètre essentiel pour l’obtention de couches fonctionnelles, particulièrement pour la fabrication de filtre radiofréquence. C’est pourquoi, dans ce travail, nous nous sommes tout d’abord concentrés sur l’obtention de couches minces épitaxiées de composition contrôlée à haute température pour la fabrication de résonateurs à ondes élastiques de surface (SAW). Puis, dans un second temps, sur l’obtention de films texturés sur des substrats de type silicium à plus faible température, pour la fabrication de composants à ondes élastiques de volume (BAW). Le travail d’optimisation du dépôt chimique en phase vapeur présenté dans ce manuscrit illustre l’impact des différents paramètres : pression, débit d’injection, rapport de concentration entre les précurseurs, sur la couche mince, et notamment sur sa composition en lithium, paramètre crucial dans la validation des propriétés du matériau. Sont aussi présentées les agencements des mailles cristallines entre le film et le substrat pour toutes les orientations épitaxiées. Finalement, des dispositifs à ondes de surface et à onde de volume basés sur les couches minces de LiNbO3 obtenues par EPVOM-ILD ont été réalisés et caractérisésThe industrial development of the next generations of telecommunications will have to go through the adoption of new piezoelectric materials in the form of thin films. In that regard, the direct liquid injection metalorganic chemical vapor deposition (DLI-MOCVD) of thin films of lithium niobate (LiNbO3), a ferroelectric material presenting exceptional properties in the field of acoustics and optics was studied in this work. Fine control of both the microstructure and the composition of these layers is a critical parameter in obtaining functional thin films, especially for radiofrequency filter applications. For this reason, in this work, we first focused on the deposition of epitaxial thin films of controlled composition at high temperature for the realization of surface acoustic wave (SAW) devices. Then, in a second phase, on the deposition of highly oriented thin films on silicon-based heterostructures at a lower temperature for the realization of bulk acoustic wave (BAW) components. The optimization process presented in this manuscript demonstrates the impact of several deposition parameters: total pressure, injection flow rate, precursor molar ratio, on the thin films, and more particularly on its lithium composition, decisive parameter in the definition of material properties. The relative arrangement of the lattice of the film with that of the substrates are presented as well, for all epitaxial growth orientations. Finally, surface acoustic wave and bulk acoustic wave devices based on lithium niobate thin films deposited by DLI-MOCVD were fabricated and characterized
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Mungkalasiri, Jitti Maury Francis. "Elaboration par DLI-MOCVD de dépôts nanocomposites TiO2-M (M = Ag, Cu) et propriétés antibactériennes de ces surfaces solides." S. l. : INPT, 2009. http://ethesis.inp-toulouse.fr/archive/00000790/01/mungkalasiri.pdf.
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Hernández, Ricardo. "Growth and Development of Greenhouse Vegetable Seedlings Under Supplemental LED Lighting." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/306916.
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The greenhouse industry is interested in light emitting diodes (LEDs) as a light source supplement to solar light to improve plant growth and development. Before LEDs can be adopted as supplemental light for greenhouse crops, plant responses to LED spectral quality need to be investigated. Tomato and cucumber seedlings were grown under different supplemental blue and red photon flux ratios (B:R ratios) under high (16-19 mol m⁻² d⁻¹) and low (5-9 mol m⁻² d⁻¹) solar daily light integrals (DLIs). The supplemental daily light integral was 3.6 mol m⁻² d⁻¹. A treatment without supplemental light served as a control. Both tomato and cucumber seedlings had increased growth rate and improved morphology when grown under the supplemental LED light compared to the control. However, no significant differences were observed for any growth and morphological parameters measured in this study between the different B:R ratios for both cucumber and tomato transplants under high DLI conditions. Cucumber seedlings showed a tendency to decrease dry mass, leaf number and leaf area under low DLI conditions with increasing B:R ratio. Tomato seedlings did not show any differences between the different B:R ratios under low DLI conditions. Seedlings growth and morphology under supplemental LED light were compared to those under supplemental high pressure sodium (HPS) light. Cucumber seedlings under supplemental HPS light had greater shoot dry mass than those under the supplemental red LED light. Tomato shoot dry mass showed no differences between the HPS and red LED supplemental light treatments. Cucumber seedlings were also grown under supplemental LED pulsed lighting and supplemental LED continuous lighting. Cucumber seedlings showed no differences in shoot dry mass and net photosynthetic rate between the treatments. Collectively, these studies concluded that red LED is preferred for supplemental lighting and the increase of blue light does not offer any benefits unless the efficiency of blue LEDs largely exceeds the red LEDs. The results of this research can be used for fixture development by LED manufactures and as a decision making tool for the adoption of supplemental LED lighting by greenhouse growers.
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Renner, Andreas [Verfasser], and Claus A. M. [Akademischer Betreuer] Seidel. "Einzelmolekül‐Fluoreszenzuntersuchungen der dynamischen Struktur und Stöchiometrie des über L27‐Domänen gebildeten Polaritätskomplexes Sdt/DPATJ/DLin‐7 aus Drosophila melanogaster / Andreas Renner. Gutachter: Claus A. M. Seidel." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2013. http://d-nb.info/1038050243/34.
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Walden, Susan. "Time-Dependent Microclimate Effects on Yield and Anthocyanin Levels of Lettuce (L. sativa) and Choi (B. rapa var. chinensis)." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1511898465276836.
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Wong, Chin Han. "An analysis of factors predicting graduation of students at Defense Language Institute Foreign Language Center." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FWong.pdf.
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Douard, Aurélia. "DÉPÔT DE CARBURES, NITRURES ET MULTICOUCHES NANOSTRUCTURÉES Á BASE DE CHROME SOUS PRESSION ATMOSPHÉRIQUE PAR DLI-MOCVD NOUVEAUX PROCÉDÉS ET POTENTIALITÉS DE CES REVÊTEMENTS MÉTALLURGIQUES." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2006. http://tel.archives-ouvertes.fr/tel-00376437.
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Des procédés atmosphériques de dépôt chimique en phase vapeur assisté par l'injection directe liquide (DLI-CVD), prometteurs pour traiter des pièces métalliques au défilé, ont permis l'élaboration à basse température de revêtements métallurgiques performants. Deux précurseurs organométalliques de chrome ont été employés dans différentes atmosphères : Cr (CO)6 pour des dépôts issus du système chimique Cr-O-N-C, et le bisbenzènechrome pour des monocouches de chrome métallique, de carbure (Cr-C) et de nitrure de chrome (CrN), ainsi que des multicouches CrN/Cr-C de bipériode 25 nm. Une approche thermodynamique a permis le calcul d'un nouveau diagramme ternaire Cr-N-C à 527°C, et l'étude de l'impact du solvant sur la nature et la qualité des dépôts en comparaison avec les systèmes chimiques sans solvant. Les propriétés des revêtements (dureté, adhérence, usure, corrosion) sont discutées en relation avec leur microstructure. Les revêtements multicouches nanostructurés CrN/Cr-C présentent des duretés et une tenue à l'usure prometteuses.
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Douard, Aurélia Maury Francis. "Dépôt de carbures, nitrures et multicouches nanostructurées à base de chrome sous pression atmosphérique par dli-mocvd nouveaux procédés et potentialités de ces revêtements métallurgiques /." Toulouse : INP Toulouse, 2008. http://ethesis.inp-toulouse.fr/archive/00000618.
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Douard, Aurélia. "Dépôt de carbures, nitrures et multicouches nanostructurées à base de chrome sous pression atmosphérique par dli-mocvd : nouveaux procédés et potentialités de ces revêtements métallurgiques." Toulouse, INPT, 2006. http://ethesis.inp-toulouse.fr/archive/00000618/.
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Des procédés atmosphériques de dépôt chimique en phase vapeur assisté par l'injection directe liquide (DLI-CVD), prometteurs pour traiter des pièces métalliques au défilé, ont permis l'élaboration à basse température de revêtements métallurgiques performants. Deux précurseurs organométalliques de chrome ont été employés dans différentes atmosphères : Cr (CO)6 pour des dépôts issus du système chimique Cr-O-N-C, et le bisbenzènechrome pour des monocouches de chrome métallique, de carbure (Cr-C) et de nitrure de chrome (CrN), ainsi que des multicouches CrN/Cr-C de bipériode 25 nm. Une approche thermodynamique a permis le calcul d'un nouveau diagramme ternaire Cr-N-C à 527°C, et l'étude de l'impact du solvant sur la nature et la qualité des dépôts en comparaison avec les systèmes chimiques sans solvant. Les propriétés des revêtements (dureté, adhérence, usure, corrosion) sont discutées en relation avec leur microstructure. Les revêtements multicouches nanostructurés CrN/Cr-C présentent des duretés et une tenue à l'usure prometteusesAtmospheric MOCVD processes assisted by Direct Liquid Injection, attractive for on-line strip coating of metal pieces, were developped for the growth of advanced metallurgical coatings. Two chromium metal organic sources have been employed under various ambience : Cr (CO)6 for coatings in the Cr-O-N-C system, and bisbenzenechromium for metal chromium, carbide (Cr-C) and nitride chromium (CrN) monolayer and CrN/Cr-C multilayer coatings with a typical 25 nm biperiod. A thermodynamic approach has permited the calculation of a new ternary phase diagram in the Cr-C-N system and the study of the solvent impact on the nature of the coatings in comparison with chemical systems without solvent. Preliminary mechanical properties from scratch test, nanoindentation and residual stress measurements as well as tribological and corrosion behavior of the mono and multilayer Cr-based coatings are discussed in relation with their microstructure. Nanostructured CrN/Cr-C multilayer coatings exhibit promising hardness and wear resistance
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Veselý, Tomáš. "Mikroprocesorový modul řízení předstihu zapalování dvoutaktního motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218600.
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This paper deals with the problem of two-stroke engine pre-ignition controller with the use of microcontroller for single-cylinder engine and double-cylinder engine. The mechanical design is drawn for motorcycles JAWA and ČZ and for engines of the same mechanical type. The establishment uses non-contact status analysis of engine with non-electric sensor. The very important thing for the design is the simplicity of the establishment. The other important thing is the minimisation of mechanical arrangement of engine and the vehicle as a whole. The importance of this establishment is non-contact switching and the possibility of changing pre-ignition maps depending on the number of rotations per minute, the temperature and the load of the engine.
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Eckhardt, Sebastian. "Hocheffiziente metallische Dünnschichtelektroden durch Direkte Laserinterferenzstrukturierung." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-220616.
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Moderne optoelektronische Dünnfilmapplikationen erfordern den Einsatz effizienter großflächiger Elektrodensysteme, die einerseits über sehr gute Leitfähigkeitseigenschaften verfügen und andererseits eine hohe Transparenz in einem breiten Wellenlängenspektrum aufweisen. Momentan wird für derartige Anwendungen zum Großteil der Werkstoff Indiumzinnoxid (ITO) eingesetzt, dessen Hauptbestandteil Indium nur in geringen Mengen auf der Erde vorkommt. Für die Erhaltung der Marktfähigkeit und zur Weiterentwicklung der Dünnschichtelektronik ist es nötig, dieses Ressourcenproblem zu lösen. Eine Möglichkeit zur Substitution von ITO ist die Verwendung dünner metallischer Filme als transparente Elektroden. Die vorliegende Dissertationsschrift untersucht in diesem Zusammenhang die Anwendung der Direkten Laserinterferenzstrukturierung (DLIP). Um hinreichend große optische Transparenz bei entsprechender elektrischer Leitfähigkeit zu erhalten, werden Dünnschichtensysteme aus Kupfer, Aluminium, Chrom und Silber mit verschiedenen periodischen Lochmustern zwischen 1,5-2,7 µm perforiert. Im Anschluss werden die bearbeiteten Probenkörper hinsichtlich ihrer optischen, elektrischen und topografischen Eigenschaften vermessen. Die umfangreichen gewonnenen Daten werden in einer Auswertung zusammengefasst und mit Resultaten aus numerischen Modellrechnungen verglichen. Neben den Ergebnissen zur Effizienzsteigerung der Dünnfilme untersucht die vorliegende Arbeit die laserinduzierte Ablationsdynamik metallischer Filme auf Glassubstrat zwischen 5-40 nm Schichtdicke.
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Xiao, Zhigang. "Synthesis of Functional Multilayer Coatings by Plasma Enhanced Chemical Vapor Deposition." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1081456822.
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Řezáč, Jakub. "Zdokonalování procesů vývoje software." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236682.
Full textAbstract:
This master's thesis is oriented on software development processes improvement techniques. It presents modern approaches of process development and analyses problems of their management and usage in various life cycle phases. In connection with these techniques it brings draft of support tool, which increases automatization of processes development with pertinent cooperation with other tools, as one of presumptions of improvement of their quality.
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Kirksey, S. Eben. "From cannibal to terrorist : state violence, indigenous resistance and representation in West Papua /." 2002. http://www.papuaweb.org/dlib/s123/kirsey2/%5Frk.html.
Full textAbstract:
Thesis (M. Phil.)--University of Oxford, 2002.Supervisor: Dr P.B. Carey, Dr M. O'Hanlon. Title from start screen (viewed Aug. 19, 2004). Includes bibliographical references (leaves 101-107). Also issued online.
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Wing, John Robert. "Irian Jaya development and indigenous welfare : the impact of development on the population and environment of the Indonesian province of Irian Jaya (Melanesian West New Guinea, or West Papua /." 1994. http://www.papuaweb.org/dlib/s123/wing/ma%5Fhtml.
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McDowell, Karen Rice. "The reemergence of medieval word-weaving in Sasha Sokolov's Shkola dlia durakov : invoking the word /." 1996. http://wwwlib.umi.com/dissertations/fullcit/9708532.
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Začal, Jaroslav. "Vývoj konstrukce školního nábytku pro rozvojové země." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-180021.
Full textAbstract:
Thesis is focused on design of production, material specifications and construction technology simplifications of school chairs and seats for developing countries. The use of locally available materials and equipment of local industry with application of low-technology manufacturing processes are emphasized. In developing areas this functional school furniture represents the basic comfort for pupils and facilitates the learning process. The thesis consists of three parts. The first part is focused on and deals with experimental assessment of mechanical parameters of various rectangular joint designs. In this case joints are stress-loaded in transversal direction. The second (practical part) of the thesis deals with designing the functional shape of seats with use of joints described and tested in the first part. The third part of thesis deals with manufacturing of designed chair model due to specifications mentioned in first part of thesis and also with design of simple tool for manufacturing the joints with low-end and low-cost technology. Further the thesis introduces my own design of simple seat construction made from massive wood material manufactured by low-end technology with regards to achieving the due specifications. The task of this thesis is to design the viable manufacturing process of seats and chairs from raw wood and scrap material. Essential part of thesis is also manufacturing of seat prototype and simplified model of proposed mortise and tenon drill. The thesis encloses the literature overview, experiment methodology, description of potentially usable and really used materials. In last chapter the testing results are summarized and the sample of manufacturing is documented.
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Feurer, Regina [Verfasser]. "(18F)-FDG-PET und neuropsychologische Untersuchung bei der Demenz mit Lewy-Körperchen (DLB) / Regina Feurer." 2007. http://d-nb.info/985108940/34.
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Hsieh, Chia-Ling, and 謝佳羚. "Glucagon-like peptide 1 (GLP-1) signaling attenuates dementia with Lewy bodies (DLB) associated neurotoxicity through restoration of insulin signaling." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/pkr9p2.
Full textAbstract:
碩士中山醫學大學
醫學研究所
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Dementia with Lewy bodies (DLB) is the second most common neurodegenerative dementia only to Alzheimer''s disease (AD). In fact, DLB shares common pathological features with AD and Parkinson''s disease (PD), that simultaneously accompany α-synuclein and Aβ. These misfolded proteins accumulate in the brain and result in a large number of neuronal damage and brain atrophy, eventually leading to of the damages of the corresponding neurological function. However, there is currently no clinical treatment of drugs for the improvement of DLB. It is in urgent need for developing new therapeutic strategies of DLB drugs. According to previous studies, the risk of dementia in diabetics is 60% higher than that of the normal control. In addition, many researches have pointed out that the relationship between metabolism and cognitive impairment is bidirectional. Particularly, the resistance of insulin signals appears to be the common feature of such senile neurodegenerative diseases. Since glucagon-like peptide-1 (GLP-1) is known to improve insulin signaling, we postulate that GLP-1 may be potentially used as a treatment strategy in DLB. In. the present study, we developed a conditional approach to stimulate α-synuclein overexpression, and then treated Aβ in this cell model to mimic the pathological condition of DLB. By using this in vitro model, we explored the putative molecular mechanisms that may cause DLB. In addition, we also established a rat''s DLB animal model, and investigated whether Liraglutide could improve behavioral symptoms of DLB. The results showed that Aβ significantly induced cytotoxicity of α-synuclein, whereas administration of Liraglutide significantly increased cell viability and inhibited the expression of pSer307-Insulin receptor substrate 1 (IRS-1) to activate AKT signaling. This indicates Liraglutide can alleviate insulin resistance caused by Aβ-induced α-synuclein neurotoxicity. Moreover, Liraglutide can increase autophagy-related protein expression by activating the AMP-activated protein kinase (AMPK)/ mammalian target of rapamycin (mTOR) pathway, which stimulate nuclear factor erythroid 2-relaated factor2 (Nrf2), superoxide dismutase 1 (SOD1) and silent information regulator-mammalian ortholog 1 (Sirt1) to reduce the oxidative stress induced by Aβ and α-synuclein. The results of animal experiments also showed that compared with the disease group, DLB rats injected with Liraglutide showed significant improvements of working memory, cognition function and depression by T-maze, object recognition and depression behavior test. In conclusion, our study demonstrated that Liraglutide can attenuate Aβ-induced α-synuclein neurotoxicity in both in in vitro and in vivo models, which may provide a possible treatment strategy for DLB in the future.
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Fernandes, Eduardo Afonso. "Análise das condições de conforto em ambientes refrigerados." Master's thesis, 2014. http://hdl.handle.net/10400.6/5666.
Full textAbstract:
A presente dissertação avalia as condições de frio a que os trabalhadores estão sujeitos, nomeadamente no sector agroindustrial, avaliando dois casos, uma empresas de distribuição alimentar e uma de lacticínios. Ambas as empresas estão inseridas na indústria consumidora de frio, em que estão dependentes deste para garantir a qualidade do produto comercializado. Deste modo, visto que os casos avaliados são relativos a consumidores frios, os trabalhadores destas mesmas empresas vão estar expostos a estas condições durante a sua jornada de trabalho. De forma avaliar as condições de conforto térmico dos trabalhadores foram seguidos procedimentos e normas internacionais. Foram realizadas medições de índole ambiental e individual, de forma a caraterizar as zonas e as condições em que os trabalhadores estão inseridos, bem como os níveis de atividade apresentados por cada trabalhador. O tipo de atividade que cada trabalhador realiza, permitiu identificar tipos de exposição diferentes, existindo casos de exposição contínua e casos de exposição intermitente ao frio. As normas que foram utilizadas, permitiram determinar índices característicos do conforto térmico, nomeadamente o índice IREQ (ISO 11079, 2007) e o índice PMV e PPD (ISO 7730, 2008). Para determinar estes índices foi necessária a determinação de outros parâmetros inerentes aos mesmos, tais como níveis de metabolismo (ISO 8996, 2004), nível de isolamento do vestuário (ISO 9920, 2007), sensações térmicas manifestadas pelos trabalhadores durante a exposição ao frio e ainda a utilização de procedimentos de medições (ISO 7726, 1998). Os resultados obtidos permitiram identificar casos que requerem atenção, devido ao deficiente nível de isolamento utilizado para as condições a que os trabalhadores de um modo geral estão sujeitos. Devido ao nível de isolamento não ser o mais adequado na grande maioria dos casos, o tempo limite recomendado de exposição ao frio acaba por ser inferior ao tempo que efetivamente os trabalhadores estão expostos a este. Deste modo foram determinados tempos limites de exposição recomendados para cada um dos trabalhadores avaliados de forma assegurar o conforto térmico destes. Por forma a relacionar o tempo que efetivamente os trabalhadores estão sujeitos às condições de frio, foram determinados/otimizados níveis de isolamento de vestuário tais, que lhes permitissem obter condições térmicas mínimas para suportar as condições ambientais de cada zona avaliada, tendo em conta o tipo de exposição a que cada trabalhador estava sujeito.This thesis, evaluates the cold conditions to which workers are exposed, particularly in the agro-industrial sector, evaluating two cases, a food distribution and a dairy company. Both companies are big consumers of cold, and are dependent on it to ensure the quality of the sold product. Thus, since both evaluated cases are cold consumers, the workers of these companies will be exposed to these conditions during the work day. In order to evaluate the thermal comfort of workers international standards and procedures were followed. Measurements of environmental and individual nature were conducted in order to characterize the areas and conditions where workers are inserted, as well as levels of activity of each worker. The type of activity that each worker performs, allowed to identify different types of exposure, cases of continuous and cases of intermittent cold exposure. The standards used, allowed to determine the thermal comfort indices, like IREQ index (ISO 11079, 2007) and the PMV and PPD index (ISO 7730, 2008).To determine these indices was necessary to determine other parameters, such as metabolic levels (ISO 8996, 2004), clothing insulation (ISO 9920, 2007), thermal sensations expressed by workers during cold exposure and the use of measurement procedures (ISO 7726, 1998). The obtained results allowed to identify cases that require attention, due to poor insulation level used for conditions that workers in general are exposed. As the level of thermal insulation is not adequate in most cases, the time limit recommended for cold exposure is lower than the time that workers are exposed to it. Finally, taking into account the type of exposure to which each worker was subject, optimal levels of clothing thermal insulation that give them the minimum thermal conditions to withstand the environmental conditions in each area assessed were determined.
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Eckhardt, Sebastian. "Hocheffiziente metallische Dünnschichtelektroden durch Direkte Laserinterferenzstrukturierung: Efficiency enhancement of metal thin film electrodes by direct laser interference patterning." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A30207.
Full textAbstract:
Moderne optoelektronische Dünnfilmapplikationen erfordern den Einsatz effizienter großflächiger Elektrodensysteme, die einerseits über sehr gute Leitfähigkeitseigenschaften verfügen und andererseits eine hohe Transparenz in einem breiten Wellenlängenspektrum aufweisen. Momentan wird für derartige Anwendungen zum Großteil der Werkstoff Indiumzinnoxid (ITO) eingesetzt, dessen Hauptbestandteil Indium nur in geringen Mengen auf der Erde vorkommt. Für die Erhaltung der Marktfähigkeit und zur Weiterentwicklung der Dünnschichtelektronik ist es nötig, dieses Ressourcenproblem zu lösen. Eine Möglichkeit zur Substitution von ITO ist die Verwendung dünner metallischer Filme als transparente Elektroden. Die vorliegende Dissertationsschrift untersucht in diesem Zusammenhang die Anwendung der Direkten Laserinterferenzstrukturierung (DLIP). Um hinreichend große optische Transparenz bei entsprechender elektrischer Leitfähigkeit zu erhalten, werden Dünnschichtensysteme aus Kupfer, Aluminium, Chrom und Silber mit verschiedenen periodischen Lochmustern zwischen 1,5-2,7 µm perforiert. Im Anschluss werden die bearbeiteten Probenkörper hinsichtlich ihrer optischen, elektrischen und topografischen Eigenschaften vermessen. Die umfangreichen gewonnenen Daten werden in einer Auswertung zusammengefasst und mit Resultaten aus numerischen Modellrechnungen verglichen. Neben den Ergebnissen zur Effizienzsteigerung der Dünnfilme untersucht die vorliegende Arbeit die laserinduzierte Ablationsdynamik metallischer Filme auf Glassubstrat zwischen 5-40 nm Schichtdicke.:1 Einleitung 1
2 Theoretische Grundlagen 4
2.1 Verfahren zur Herstellung von Dünnschicht-Elektroden 4
2.1.1 Verdampfungsverfahren 4
2.1.2 Sputterverfahren 5
2.1.3 Metallorganische Gasphasenepitaxie – MOCVD 6
2.2 Schichtwachstum von Metallfilmen in PVD-Verfahren 7
2.3 Elektrische Eigenschaften von Dünnschicht-Elektroden 9
2.3.1 Mechanismen der elektrischen Leitung in Festkörpern 9
2.3.2 Elektrische Charakteristika von Indiumzinnoxid-Schichten 10
2.3.3 Elektrische Charakteristika dünner Metallschichten 10
2.4 Optische Eigenschaften dünner Schichten 13
2.4.1 Wechselwirkung von Licht mit Materie 13
2.4.2 Lichtmanipulation durch periodische Strukturen 14
2.4.3 Optische Eigenschaften transparenter ITO-Schichten 17
2.4.4 Optische Eigenschaften metallischer Dünnschichten 18
2.5 Grundlagen lasergestützter Bearbeitungsmethoden 19
2.5.1 Materialablation durch gepulste Laserstrahlung 19
2.5.2 Theoretische Grundlagen zur Bestimmung der Ablationsschwelle 21
2.6 Verfahren zur Mikrostrukturierung von Oberflächen 22
2.6.1 Elektronenstrahl-Lithographie 23
2.6.2 Sequentielles Laserstrukturieren 24
2.6.3 Strukturieren mit Laserinterferenz 25
2.7 Aktueller Forschungsstand zur DLIP dünner Metallschichten 29
2.7.1 DLIP metallischer Filme mit Nanosekunden-Pulsen 29
2.7.2 DLIP metallischer Filme mit Pikosekunden-Pulsen 35
3 Experimentelle Arbeit 37
3.1 Entwicklung numerischer Rechenmodelle 37
3.1.1 Modellierung des Interferenzvolumens 37
3.2 Thermische Simulationen 38
3.3 Experimente und Versuchsanordnungen 42
3.3.1 Verwendete Lasersysteme 42
3.3.2 Vorgehensweise zur Bestimmung der Ablationsschwellwerte 42
3.3.3 Laser-Annealing metallischer Dünnschichten 43
3.3.4 Direkte Laserinterferenzstrukturierung 44
3.3.5 Übersicht der verwendeten Dünnfilmsubstrate 47
3.3.6 Mess- und Analysemethoden 49
4 Auswertung und Diskussion 55
4.1 Ermittlung der Ablationsschwellwerte 55
4.1.1 Ablationsschwellwerte bei Nanosekunden-Pulsen 55
4.1.2 Ablationsschwellwerte bei Pikosekunden-Pulsen 58
4.2 Charakterisierung unbehandelter Dünnschichten 58
4.2.1 Topographische Eigenschaften unbehandelter Metalldünnschichten 58
4.2.2 Optische und Elektrische Eigenschaften unbehandelter metallischer Filme 59
4.3 Charakterisierung lasergeglühter Metalldünnschichten 60
4.3.1 Optische Eigenschaften lasergeglühter Metallfilme 60
4.3.2 Elektrische Eigenschaften lasergeglühter Metallschichten 61
4.3.3 Schlussfolgerungen aus den Annealing-Experimenten 63
4.4 Ergebnisse der Modellrechnungen 63
4.4.1 Mathematische Simulation der Interferenzeigenschaften 63
4.5 Charakterisierung DLIP-strukturierter Metalldünnschichten 67
4.5.1 DLIP-Strukturierung von Silberdünnschichten ns-Pulsen 67
4.5.2 DLIP-Strukturierung von Silberdünnschichten mit ps-Pulsen 71
4.5.3 DLIP-Strukturierung von Kupferdünnschichten mit ns-Pulsen 77
4.5.4 DLIP-Strukturierung von Kupferdünnschichten mit ps-Pulsen 89
4.5.5 DLIP-Strukturierung von Aluminiumdünnschichten mit ns-Pulsen 93
4.5.6 DLIP-Strukturierung von Aluminiumdünnschichten mit ps-Pulsen 106
4.5.7 DLIP-Strukturierung von Chromdünnschichten mit ns-Pulsen 111
4.5.8 Charakterisierung DLIP-strukturierter Vielschicht-Substrate 116
4.6 Optische Charakterisierung 118
4.6.1 Optische Eigenschaften mittels ns-Pulsen strukturierter Filme 119
4.6.2 Optische Eigenschaften mittels ps-Pulsen strukturierter Filme 127
4.6.3 Optische Charakterisierung DLIP-strukturierter Vielschicht-Substrate 129
4.7 Elektrische Eigenschaften 131
4.7.1 Schichtwiderstand DLIP-strukturierter Metallelektroden 131
4.7.2 Schichtwiderstand DLIP-strukturierter Vielschicht-Elektroden 140
5 Zusammenfassung 144
6 Ausblick 149
7 Literaturverzeichnis 150
8 Anhang 161
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(5930060), Paola C. Montenegro. "MOLECULAR PERTURBATIONS IN SYNUCLEINOPATHY DISORDERS: INSIGHTS FROM PRE-CLINICAL TO HUMAN NEUROPATHOLOGY." Thesis, 2019.
Find full textAbstract:
Parkinson’s disease (PD) is a devastating neurodegenerative disorder that affects 10 million people worldwide and is characterized by pronounced motor symptoms. Dementia with Lewy Bodies (DLB) involves both cognitive and motor deficits and affects ~1 million people in the United States. To date there is no cure for PD or DLB, and current treatments address only a subset of the symptoms that define these diseases. PD and DLB are ‘synucleinopathies’, defined as disorders involving the accumulation in patients’ brains of Lewy bodies. Lewy bodies are cellular inclusions that consist largely of aggregated species of alpha-synuclein (aSyn), a presynaptic protein that exists as both cytosolic and membrane-bound forms. Pathophysiological findings suggest that aggregated aSyn is involved in neurodegeneration in PD and DLB. However, mechanisms by which aSyn forms neurotoxic aggregates, and neurotoxic processes that distinguish different synucleinopathies such as PD and DLB, are poorly understood. To address these gaps, we have (i) designed a protocol to establish a primary cell culture model that can recapitulate key neuropathological features of PD, (ii) examined effects of expressing aSyn variants in a rat model of PD, and (iii) examined the expression profiles of neuroprotective genes in PD and DLB brain specimens.
In the first part of my thesis, I describe the development of an optimized protocol to prepare primary midbrain and cortical cultures from rat embryonic brains for the study of PD and other synucleinopathies. The establishment of cellular models that simulate specific aspects of neuropathology can enable the characterization of molecular perturbations that lead to dopaminergic (DA) neuronal death. Our primary midbrain mixed culture model provides an outstanding opportunity to explore therapeutic strategies to rescue DA neurons from toxicity elicited by a range of PD-related insults. In addition, our primary cortical mixed cultures can be used to model cortical neuropathology in various CNS disorders including synucleinopathies.
A number of mutations in the gene that codes for aSyn are associated with familial, early-onset forms of PD. A major goal of my thesis research is to characterize neurotoxic effects of a recently discovered familial substitution, A53E. This mutant was chosen based on the rationale that the introduction of a negatively charged residue at position 53 could potentially interfere with aSyn-membrane interactions and favor A53E aggregation, as we described for other familial aSyn mutants. For the first time, we have reproduced the neurotoxicity of A53E seen in human patients by expressing the mutant protein in rat midbrain. Rats injected unilaterally in the substantia nigra (SN) with rAAV encoding A53E and another familial mutant, A53T, but not rAAV encoding WT aSyn or a vector-control (‘stuffer’) virus, exhibited a significant motor impairment. Immunohistochemical analysis at 14 weeks after the viral injection revealed that brain sections from aSyn-expressing rats exhibit key features reminiscent of neuropathology in human PD, including nigral dopaminergic neuron loss (confirmed by unbiased stereology), striatal terminal depletion, and aSyn inclusion formation. In addition, it was determined that WT aSyn and the A53E and A53T mutants invaded the non-injected substantia nigra, implying that expressed aSyn protein can spread throughout the brain in the rat rAAV-aSyn model. These results yield insights into the molecular basis for the neurotoxicity of A53E and shed light on a potential role for membrane-induced aSyn aggregation in PD pathogenesis in vivo, thus setting the stage for developing therapies to slow neurodegeneration in the brains of familial and idiopathic PD patients.
aSyn neurotoxicity varies with the expression of neuroprotective proteins, and misfolded aSyn affects cellular functions and gene expression. These observations suggest that differential gene expression patterns can inform us about similarities and differences in pathogenic mechanisms of different synucleinopathy disorders. A third phase of my thesis research was aimed at determining the expression levels of a panel of candidate neuroprotective genes in post-mortem brain samples from DLB and PD patients and age-matched controls (5 individuals in each group). mRNAs encoding the following proteins were quantified via qRT-PCR in homogenates prepared from the frontal cortex and the BA24 region encompassing the cingulate gyrus: DJ-1, a protein with antioxidant and chaperone activities; PGC1α, a master regulator of mitochondrial biogenesis and oxidative metabolism; MsrA, an antioxidant enzyme responsible for repairing oxidatively damaged proteins; and ATP13A2, a lysosomal protein involved in autophagy. In addition to yielding new insights into differential gene expression patterns in cortex versus cingulate gyrus, the data revealed differences in mRNA expression levels in DLB versus non-DLB cortical tissue. Although levels of all four neuroprotective mRNAs were increased (or showed a trend towards being increased) in DLB cortex, Western blot analysis revealed that only the DJ-1 and PGC1α proteins showed a trend towards being up-regulated, whereas levels of ATP13A2 and MsrA were unchanged. These findings suggest that there is a failure to induce cellular antioxidant responses and lysosomal autophagy at the protein level in DLB cortex, and in turn this failure could contribute to neuropathology. Interestingly, analysis of the same panel of neuroprotective genes in PD cortical samples did not show significant differences in mRNA or protein levels compared to control samples, suggesting that different neuroprotective mechanisms are induced in DLB versus PD cortex. These studies shed light on brain-region specific changes in gene expression associated with different synucleinopathy disorders, and they set the stage for developing new diagnostic tests and therapeutic strategies.
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Meyne, Felix. "Das zelluläre Prionprotein im Liquor cerebrospinalis von Patienten mit verschiedenen neurologischen Erkrankungen." Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-AFCE-3.
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(9525959), Reza Asadpour. "EXPLORING THE POTENTIAL OF LOW-COST PEROVSKITE CELLS AND IMPROVED MODULE RELIABILITY TO REDUCE LEVELIZED COST OF ELECTRICITY." Thesis, 2020.
Find full textAbstract:
The manufacturing cost of solar cells along with their efficiency and reliability define the levelized cost of electricity (LCOE). One needs to reduce LCOE to make solar cells cost competitive compared to other sources of electricity. After a sustained decrease since 2001 the manufacturing cost of the dominant photovoltaic technology based on c-Si solar cells has recently reached a plateau. Further reduction in LCOE is only possible by increasing the efficiency and/or reliability of c-Si cells. Among alternate technologies, organic photovoltaics (OPV) has reduced manufacturing cost, but they do not offer any LCOE gain because their lifetime and efficiency are significantly lower than c-Si. Recently, perovskite solar cells have showed promising results in terms of both cost and efficiency, but their reliability/stability is still a concern and the physical origin of the efficiency gain is not fully understood.