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Roy, Birendro M. "DPAS : the Dynamic Project Assessment System." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33351.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.Includes bibliographical references (p. 81-82).
In this thesis, I designed and implemented the second iteration of a web-based system that administers survey questions to users and aggregates responses. Several survey system components were reimplemented according to an updated software architecture, and several new system components were developed. Chief among these is a web-based administration console that provides a unified access method for several frequently used functions. Individual console functions are built around an object-oriented framework that will serve as a basis for the next system design iteration.
by Birendro M. Roy.
M.Eng.
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Schmidt, Zachary Wayne, and Zachary Wayne Schmidt. "Characterizing Concealed-Question DPS." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625147.
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Concealed questions (CQs) are DPs that function as embedded questions. Although
various attempts have been made to establish which DPs can and cannot be CQs, none
of these attempts has been completely successful. I argue that the constraints on CQ DPs
are the same as the constraints on subjects of embedded specificational wh- questions. I
show that one apparent exception, the requirement that a specificational subject be
topical, is a matter of felicity rather than grammaticality, but the existence of nontopical
CQs does offer insight into the structural difference between CQs and embedded
questions. I conclude by proposing that a CQ is a small clause whose predicative DP has
risen into the matrix clause to produce a specificational structure.
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Keenan, Christopher Ryan. "Stochastic modelling for high fidelity DPGS quality assessment." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249721.
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Sousa, José Eduardo Bruno de. "Bio-inspired anatomy for autonomous DPWS-compliant automation components." Master's thesis, FCT - UNL, 2009. http://hdl.handle.net/10362/2393.
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Dissertação apresentada na Faculdade de Ciências e Engenharia da Universidade Nova de
Lisboa para obtenção do grau de Mestre em Engenharia Electrotécnica e de ComputadoresThis thesis approaches the use of the DPWS technology to implement web-services on small devices, addresses its limitations, and explains an architecture to solve it. An approach to an autonomous device’s simple architecture was realized, using DPWS, and was called Simple DPWS. The objective was to implement/simplify some features in a device in a way that the device can work on its own. The designed architecture is based on that each component has its framework of modules, having always at least the skeleton modules communication and Event Router-Scheduler. The communication module controls all the communication between the devices and the ERS is the responsible for the other modules’ real-time communication. The DPWS toolkit offers no capability of interacting with run-time-appearing services. Thus there was a necessity to do enhancements over the DPWS toolkit to have a dynamic stub and skeleton. This service was called the dynamic service. An experience was done connecting a DPWS toolkit sample service with the corresponding hand-created dynamic service. It was used the lighting service that consists on turning a lamp ON or OFF and getting its status. A GUI was done for the application to be more user-friendly. The results were satisfactory, as the connection worked.
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Licata, Nausicaa Valentina. "Identification of new pathways modulating C9orf72-derived DPRs expression." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/276572.
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The hexanucleotide repeat expansion GGGGCCn (also known as G4C2n) localizes in the first intron of the C9ORF72 gene and is the most common genetic cause of ALS and FTD (C9ALS/FTD). The pathomechanisms proposed for C9ALS/FTD suggest that from sense (G4C2)n- and anti-sense (C4G2)n-containing transcripts originate two different mechanisms of toxicity: i) by the alteration of RNA processing due to binding and sequestration of RNA-binding proteins, thereby leading to impairment of RNA metabolism; and ii) by their unconventional Repeat-associated non AUG (RAN) translation into five different dipeptide-repeats (DPRs). In addition, pathological expansion of (G4C2)n reduces the C9orf72 transcription causing loss of function of the C9ORF72 protein. The toxicity of some of these DPRs has been showed in several cell lines, in iPSC-derived neurons, in Drosophila and in mouse models. An impairment of the ubiquitin-proteasome system (UPS) due to aggregation of toxic proteins is largely demonstrated in neurodegenerative disorders and among the mechanisms of DPR-related toxicity. RAN translation of (G4C2)n-RNAs has been recently shown to require a near-cognate start codon upstream of the repeat in frame +1 and to be triggered by stress conditions in a cap-dependent or cap-independent way. However, the mechanism regulating RAN translation is still largely unknown. Importantly, no small molecules are known to selectively modulate RAN translation, even if antisense oligonucleotides (ASOs) and small molecules binding the r(GGGGCC)n have been proposed as therapeutics for C9ALS/FTD. In addition, no effective pharmacological approach to reduce the pathological load of DPRs is currently available.
Here, I developed a high-throughput drug-screening assay to identify small molecules and relative molecular targets that can modulate the DPR level. Among the identified hits, two hits reduced DPRs expression levels triggering the protein clearance system in vitro. Moreover, the screening identified compounds having the same target that increased DPRs expression levels indicating the targeted pathway as a crucial modulator of the translation process of the C9orf72 repeat-containing mRNAs. Conversely, I showed that pharmacological inhibition of the pathway reduced DPRs expression levels in vitro, while in vivo it rescued climbing ability and increased life span of Drosophila flies carrying G4C2X36 repeats. Moreover, genetic ablation of the target reduced DPRs expression levels by decreasing their translation efficiency in vitro and rescued the pathological phenotype in vivo. Together, the results show the identification of new pathways as new drug targets for C9ALS/FTD.
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Kolář, Radek. "Implementace nástrojů vizualizace pro osazování DPS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241967.
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Familiarization with the problems of PCB assembly and commissioning means for interim and final control of DPS on semi-automatic and manual assembly. Analysis tools for visualizing programs during PCB assembly. Defining the pluses and minuses of each program. Introducing the functioning of the program selected for visualization. Implementation of the program into production. Problems with introducing the program and compared with the previous situation. Evaluation of its contribution to manufacturing (time, quality, financial costs, human resources, ...). Solving problems encountered with the implementation of the program. Recommendations for the type of production the program is suitable.
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Tylich, Ondřej. "Elektromigrace tavidlových zbytků na povrchu DPS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242134.
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Diploma thesis introduces the problems of electromigration, fluxes and flux residues. It includes a proposal for methods of measuring surface insulation resistance, information about selected types of fluxes and conformal coatings. It focuses on the influence of temperature, humidity. There are applied conductometric method and method of measuring SIR by IPC-25-B. The thesis describes the practical measurement of SIR and ionic contamination of PCB covered with flux and influence of RH, temperature and applied voltage is evaluated and discussed.
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Blahút, Jozef. "Automatická expoziční jednotka pro výrobu DPS." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318637.
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This diploma thesis deals with the issue of fast high-quality prototype production of printed circuit boards for the needs of the mechatronics lab. Within the scope of this thesis a prototype machine was proposed and created together with control software, which by the help of DLP projector and two stage axis allows to produce printed circuit board in relatively short period of time.
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Strohe, Hans Gerhard, and Frank Geppert. "DPLS : Algorithmus und Computerprogramm für dynamische Partial-Least-Squares-Modelle." Universität Potsdam, 1997. http://opus.kobv.de/ubp/volltexte/2010/4904/.
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Lineare Modelle mit latenten Variablen sind seit langem verbreitete Analyse- und Prognoseinstrumente in den Sozialwissenschaften. Auch in der Ökonometrie gibt es einige Anwendungen. Die meistverbreiteten Modellierungs- und Schätzverfahren sind LISREL von Jöreskog und Sörbom (z.B. 1987) und Partial Least Squares (PLS) von H. Wold (1973). Während LISREL mehr modellorientiert und in der Anwendung konfirmativ ist, kann man PLS als datenorientiert und eher deskriptiv oder explorativ bezeichnen. Charakteristisch für Wolds Herangehen ist, daß das PLS-Modell eigentlich nur durch den Algorithmus zu seiner Schätzung definiert wird.
Das umfassendste Programmsystem für PLS ist LVPLS von J. B. Lohmöller (1984). Es lehnt sich sehr eng an die Theorie von Wold an und ist trotz mangelnden Nutzerkomforts in seiner Vielseitigkeit und Zuverlässigkeit unübertroffen. Weder Wolds Verfahren noch Lohmöllers Programm sehen die Anwendung auf dynamische Modelle, etwa VARs, explizit vor. Die Einbeziehung verzögerter Variablen ist nur in Form selbständiger Variablen möglich, was zu Inkonsistenzen bei der Gewichtung führt.
Im folgenden zweiten Abschnitt wird ein Verfahren skizziert (vgl. Strohe 1995), das sich einerseits sehr eng an den Woldschen Algorithmus anlehnt, das aber andererseits speziell auf die Behandlung von dynamischen Modellen mit verzögerten latenten Variablen ausgerichtet ist. Der dritte Abschnitt bringt dann eine Einführung in das entsprechende ISP™ Computerprogramm DPLS (vgl. Geppert 1995). Er besteht aus einer allgemeinen Programmbeschreibung und einer detaillierten Nutzeranleitung. Hinzu kommt die Bearbeitung eines kleinen ökonometrischen Demonstrationsmodells.
Im vierten Abschnitt werden mit einer Simulationsstudie die Eigenschaften des Schätzverfahrens DPLS unter verschiedenen Verteilungsannahmen geprüft. Der Anhang bringt die vollständigen Listings der kommentierten Programm-Macros.
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Milagaia, Rui Rodrigues. "Dpws middleware to support agent-based manufacturing control and simulation." Master's thesis, FCT - UNL, 2009. http://hdl.handle.net/10362/1872.
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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia Electrotécnica e de ComputadoresIn present manufacturing systems, the current challenge is the development of highly reconfigurable, truly distributed solutions. The tendency is to build manufacturing systems with autonomous, intelligent and distributed components that will support reconfiguration and adaptability. The most promising paradigms for the implementation of such systems are multi-agents and service oriented architectures (SOA), mainly over the DPWS (Device Profile for Web Services) implementation which was aimed at devices. An important limitation of most current multi-agent systems is that the management system is not totally distributed. Failure in the agent responsible for the registry can overthrow the entire system. DPWS does not have this limitation, since the management system is totally distributed. However, DPWS does not support agent autonomy notions as efficiently. The possibility of creating a truly distributed multi-agent system by linking both approaches led to this thesis. A Middleware layer was developed that enables agents to benefit from DPWS functionalities in order to reach the proposed goal. This middleware layer joins agents, databases, hardware, simulators, human interface applications such as production system management, error correction and maintenance, etc. To prove this concept a 3D model of an agent controlled manufacturing system with transporters augmented with DPWS communication interfaces was developed.
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Marcelo, Alisson. "Análise de desempenho da camada de segurança de aplicações DPWS." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/71951.
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A disseminação dos dispositivos embarcados por diferentes domínios de aplicação torna necessário que a interação entre eles dispense ao máximo a intervenção humana. Diversos protocolos e tecnologias foram criados para a atingir este objetivo. Uma destas tecnologias é o Device Profile for Web Services (DPWS), que tem tido relativa aceitação tanto em ambientes industriais quanto residenciais. A expressividade e flexibilidade do DPWS tem permitido integrar dispositivos com recursos reduzidos diretamente com os sistema de gerenciamento das organizações. Com a diversidade dos dispositivos disponíveis e o crescimento das aplicações de redes sem fio, torna-se importante que os dados possam ser protegidos para manter a sua integridade e sigilo. Em aplicações como controle de processos, aquisição de dados estratégicos, medição de consumo de energia, entre outras, os prejuízos causados por interferências indevidas justificam a aplicação de estratégias de proteção dos dados, mesmo com o custo que elas podem gerar. Neste trabalho, são estudados os impactos da união da flexibilidade e expressividade do DPWS com a criptografia e compressão, fornecendo subsídios para que seja avaliado o custo de cada combinação destas soluções para definir quais níveis de proteção e otimização são mais adequados a cada cenário em que o DPWS possa ser aplicado. Ao fim do estudo realizado, demonstra-se o custo da criptografia na proteção dos dados, avaliando-se diferentes suítes de cifragem nas quais os algoritmos RC4 e o AES se mostram como opções viáveis em ambientes embarcados apesar do custo inerente ao processo de criptografia. Outro ponto importante é a comprovação estatística de que a compressão dos dados propicia um ganho de desempenho com redução de banda ocupada capaz de compensar o custo computacional da sua aplicação. Estas análises comprovam que o uso do tráfego seguro não pode ser aplicado a todos os casos devido às suas exigências de recursos. Em certas aplicações é possível achar um ponto intermediário onde se garanta apenas a autenticidade dos dados, deixando a criptografia completa para os casos mais críticos. Por fim, a conclusão à qual se chega é que o DPWS pode ser um substituto para as opções atuais de gerenciamento, sobre as quais tem como principal vantagem a capacidade de crescer em representatividade e complexidade de acordo com os recursos computacionais disponíveis.The growth of use of embedded devices in several application domains makes necessary the reduction of human interaction for the devices control and has motivated the development of new technologies to achieve this goal. The Device Profile for Web Services (DPWS) is one of such technologies. It has been adopted on both industrial and home applications due to its flexibility, scalability and interoperability that allows the direct integration between deeply embedded devices and enterprise management systems. The remote device management requires a high level of data protection that could guarantee the integrity and confidentiality needed by industrial applications. In applications such as process control, strategic data acquisition, power consumption measurement, the possible harm caused by undue interference justify the use of data protection strategies despite the increasing of cost added by security technologies. This paper presents the results of a statistically proven study on the security layer applications of DPWS embedded devices using compressed data. The main objective of this work is to provide the background required to DPWS secure devices design, estimating the impact of many combinations of compression and security algorithms such as gzip, RC4 and AES. It proves that these technologies fit in embedded devices applications when data security is a strong requirement. Additionally, it is shown that performance degradation caused by data compression is compensated by the reduction of the amount of data to be encrypted. Best results were obtained when the compressed data fit in one Ethernet packet. Finally, is concluded that DPWS can replace the current alternatives to process management, having the advantages of scalability direct connection between deeply embedded devices and enterprise management systems.
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Cigánek, Martin. "Syntéza a studium nových derivátů diketopyrrolopyrrolů (DPPs) pro organickou elektroniku." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316170.
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This diploma thesis describes organic pigments of diketopyrrolopyrroles (DDPs) possessing properties applicable in attractive and perspective areas of organic electronics and photonics. The modification of the DPP skeleton was performed by nucleophilic substitution by various alkyl chains and 5 series of DPP derivatives were prepared. The regioselectivity of N-alkylation and also the photophysical properties of the prepared derivatives were studied. A key product of this work is the N,N'-ethyladamantyl derivative of DPP, which exhibited ambipolar characteristic with excellent electron mobility of 0.2 cm2 V–1 s–1. Further, the -conjugation of the above-mentioned DPP derivative was extended by 1 and 2 thiophene units at positions 3,6 and the effect of this modification on optical properties of the resulting derivatives was investigated. A new modified N,N'-unsubstituted DPP derivative was also prepared. The last point of this thesis was the study of the incorporation of formyl functional groups into the skeleton of key N,N'-ethyladamantyl DPP derivative.
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Springborn, Matthias. "Das literarische Vermächtnis jüdischer DPs: Eine Doppelrezension." HATiKVA e.V. – Die Hoffnung Bildungs- und Begegnungsstätte für Jüdische Geschichte und Kultur Sachsen, 2016. https://slub.qucosa.de/id/qucosa%3A34813.
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Mlýnek, Martin. "Analýza závad na DPS pomocí X-RAY." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221093.
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This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.
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Buřival, Tomáš. "Opravy DPS s BGA a FC pouzdry." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217906.
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Graduation thesis is specialized on dilemma of the integrated circuits with ball grid array. Chapter two describes several types of packages and confrontation of their characteristics. Chapter three considers possibilities of corrections these boards bedded with packages, mounting and demounting of these packages, method of camera control and also inspection of the soldering process. Chapter four attend to practical measuring of thermal profiles and their optimalization.
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Gerják, Rastislav. "Návrh a konstrukce CNC routeru pro DPS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-319566.
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In mechanical industry, both additive and subtractive manufacturing methods are controlled by instructions in G-code, making it possible to utilize both technologies in one modular device. Main objective is to design, construct, and calibrate multipurpose machine based on RepRap 3D printer, which will be able to use attached spindle to precisely mill light materials. Particular emphasis is given to ability to carve a pattern and drill holes in plated substrate in order to create functional PCB by incision.
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Ruge, Marcus. "Stimmungen und Erwartungen im System der Märkte : eine Analyse mit DPLS-Modellen." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5290/.
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Diese Forschungsarbeit widmet sich der Analyse von Stimmungen und Erwartungen im System der Märkte mit Dynamic Partial Least Squares (DPLS) Modellen. Die Analyse komplexer Systeme mit umfangreichen Datensätzen und die Erkennung relevanter Muster erfordern die Verwendung moderner statistischer Verfahren. DPLS-Modelle, eine Variante der Strukturgleichungs-modelle mit Latenten Variablen, werden methodisch erweitert, um mehrere zeitliche Verzögerungsstufen gleichzeitig modellieren zu können. Die ökonometrischen Modelle versuchen, zahlreiche latente Einflussfaktoren und ihre verdeckten Beziehungen zu identifizieren. Als Daten werden rund 80 Indikatoren verwendet von Januar 1991 bis Juni 2010, um Stimmungen, Erwartungen und wirtschaftlich relevanten Größen zu operationalisieren und die Zusammenhänge detailliert zu untersuchen. Die Modellergebnisse zeigen, dass Stimmungen, also die Einschätzung der aktuellen wirtschaftlichen Lage, deutlich mit wirtschaftlichen Größen zusammenhängen, unter anderem mit Investitionen, Auftragseingängen oder Aktienmarktentwicklungen. Die Erwartungen, also die Einschätzung der zukünftigen Entwicklung, bieten eine mittlere bis schwache Prognosekraft für sechs bis maximal achtzehn Monate in die Zukunft. Für kürzere Zeiträume von sechs Monaten sind Stimmungen und Erwartungen die besten verfügbaren Prognosevariablen. Die Analyse der Modellabweichungen erlaubt Rückschlüsse auf wirtschaftstheoretische Konzepte, wie Rationalität der Erwartungen. Auffällig sind scheinbare Phasen der systematischen Über- und Unterbewertungen der aktuellen Situation oder zukünftigen Entwicklung, insbesondere vor und nach Krisensituationen. Die Ergebnisse dieser Arbeit geben somit einen erweiterten Einblick in die empirischen Zusammenhänge subjektiver Einschätzungen mit realen wirtschaftlichen Größen.This research thesis is devoted to the analysis of sentiments and expectations in the system of economic markets with Dynamic Partial Least Squares (DPLS) models with time-series. The analysis of complex systems with large data sets and discovering relevant patterns require the use of modern statistical methods. The DPLS models, a variant of structural equation models with latent variables, are methodically extended to include multiple lags simultaneously. The econometric models try to identify a large number of latent factors and their unobservable relations. The data consists of about 80 indicators from January 1991 to June 2010 to quantify sentiments, expectations and economically relevant variables and examine the relations in detail. The results show, that the sentiments, the assessment of the current economic situation, are clearly linked with economic variables like investments, incoming orders and stock market developments. The expectations, the assessment of future development, provide a weak to moderate predictive power for up to 18 months in the future. For shorter periods of six months sentiments and expectations are the best available forecast variables. The analysis of model deviations allows to draw conclusions about theoretical concepts such as rationality of expectations. There seem to be phases of systematic over- and undervaluation of the current situation and future development, especially before and after economic crisis. The results should provide a deeper insight into the empirical relationships between subjective assessments and real economic variables.
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Bohn, Hendrik. "Web service composition for embedded systems : WS-BPEL extension for DPWS /." Göttingen : Sierke, 2009. http://d-nb.info/99274900X/04.
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Floripi, Simone Azevedo. "Argumentos nulos dentro de DPs em portugues brasileiro." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/270803.
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Orientador: Jairo Morais NunesDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem
Made available in DSpace on 2018-08-03T20:22:18Z (GMT). No. of bitstreams: 1 Floripi_SimoneAzevedo_M.pdf: 3004245 bytes, checksum: da193c7449cfdaacdc8aca8f36aa59c5 (MD5) Previous issue date: 2003
Resumo: Esta dissertação analisa as características de uma categoria vazia em estruturas possessivas do Português Brasileiro, utilizando o contexto de DP com nomes relacionais, Le., nomes que selecionam outros nomes como argumentos e expressam uma relação de parentesco ou amizade. A análise dessa dissertação está baseada na teoria de Princípios e Parâmetros de Chomsky (1981, 1986) na sua versão mais atualizada, conhecida como Programa Minimalista (Chomsky 1995). Na teoria de Regência e Ligação, a aplicação do Critério Temático nos IÚveis de representação sintática impedia o movimento para posições temáticas. Porém, alguns estudos baseados no Programa Minimalista, como Nunes (1995), Hornstein (1999) e Ferreira (2001), demonstraram ser possível a realização desse movimento ao considerar que papéis temáticos são traços, capazes de licenciar movimento. Dessa maneira, a hipótese defendida por esta dissertação considera o licenciamento do movimento (Copiar e Concatenar) de um DP em estruturas possessivas para uma posição temática, como visualizado no exemplo abaixo. (i) Eva telefonou para a mãe e Para o desenvolvimento deste trabalho, foram utilizadas algumas restrições de movimento (d. Ferreira 2001 e Rodrigues 2001), com o intuito de verificar se tais restrições se aplicariam nas construções relevantes para a minha análise (estruturas com o DP possuidor de uma cv ligada a um nome relacional). Como resultado, observei que esta cv não apresentou comportamento de pronome, o que confirmou minha hipótese de estar lidando com um vestígio de movimento. Já em contexto de impedimento de movimento, me baseei na proposta "de Aoun, Choueiri e Hornstein (2001) sobre um fenômeno apresentado em Libanês. De acordo com os dados encontrados em contexto de ilha, procuro demonstrar que o elemento localizado no DP com nome relacional da oração subordinada apresenta características de um elemento pronominal (um tipo de pronome resumptivo), licenciado por questões de economia devido à configuração de bloqueio para movimento
Abstract: This thesis analyzes the characteristics of an empty category in possessive structures in Brazilian Portuguese, using the context of DPs with relational nouns, i.e., nouns that select other nouns as arguments and express a family or friendship relationship. The analysis in this thesis is based on the PrincipIes and Parameters theory of Chomsky (1981, 1986) in its more current version, known as the Minimalist Program (Chomsky 1995). In the Govemment and Binding theory, applying the Theta Criterion at the syntactic levels of representation banned movement to e-positions. However, some studies based on the Minimalist Program, such as Nunes (1995), Hornstein (1999), and Ferreira (2001), have shown that this movement is possible by considering that e-roles are features, capable of licensing movement. Thus, the hypothesis argued for in this thesis considers licensing of movêment (Copy and Merge) of a DP in possessive structures to a G-position, as shown in the example below. (i) Eva telefonou para a mãe e Eva telephoned to the mother e 'Eva called her mother.' For this study, I have used some restrictions on movement (d. Ferreira 2001 and Rodrigues 2001), with the intention of verifying if such restrictions would apply to the structures relevant for my analysis (the DP possessor of an empty category linked to a relational noun). The result was that this empty category did not show the behavior of a pronoun, which confirmed my hypothesis that it was actually a trace of movement. As for contexts that block movement, I used a proposal by Aoun, Choueiri, and Hornstein (2001) about a phenomenon in Lebanese. According to the data concerning islands, I demonstrate that the element in the DP with a relational noun of the embedded clause shows characteristics of a pronominal element (a kind of resumptive pronoun), licensed for reasons of economy because of the movement blocking configuration
Mestrado
Linguistica
Mestre em Linguística
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Pereira, Joana Fernandes Alberto Wilton. "Electrochemical characterization of Dps, a DNA-protecting protein." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/7820.
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Dissertação para obtenção do Grau de Mestre em
BiotecnologiaThe objectives of the present work were the purification and electrochemical characterization of Dps and study its iron incorporation mechanism in the presence of hydrogen peroxide. A bacterial miniferritin (Dps) from Pseudomonas (Ps.) nautica 617 was expressed in BL21(DE3) E. coli cells transformed with pET21c(+)-1dps plasmid vector. Protein overexpression was performed in nutritionally rich LB medium containing 100 μg/mL ampicillin. Recombinant Dps was purified through a two-step process: weak ionic exchange chromatography (DEAE Sepharose Fast Flow XK 26/40 resin) and strong ionic exchange chromatography (Q Resource resin). Protein concentration was determined through UV/Visible spectroscopy. The electrochemical study was performed through cyclic voltammetry, square wave voltammetry and chronoamperometry; Dps was either in solution or adsorbed to the working electrode. The chosen supporting electrolyte was 200 mM MOPS pH 7.1 buffer with 200 mM NaCl. Electrochemical assays were performed in aerobic and anaerobic environment and in the presence of Dps and Fe(II) and H2O2, both of Dps co-substrates. For the different assays, working electrodes made of gold, glassy carbon and graphite were used with different results and conclusions. The iron incorporation in the ferroxidase centers and mineral core formation were studied. Assay results were obtained through direct electron transfer. Among the observed results, iron oxidation during protein incubation and oxygen production during the catalytic mechanism were observed. DNA-Dps interaction results were inconclusive, although some unconfirmed evidence exists of DNA protection by Dps from electrochemical oxidation.
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Magnus, Lindsay Gerald. "Expanding the capabilities of the DPS lonosonde system." Thesis, Rhodes University, 2001. http://hdl.handle.net/10962/d1018243.
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The Digisonde Portable Sounder (DPS) is a low power pulse ionosonde capable of recording a wealth of scientific information about the ionosphere. The routine vertical incidence mode, that produces the scaled ionospheric parameters, only records limited Doppler and no precise angle of arrival (AoA) information. The drift mode produces precise scientific information but only limited range information. This thesis explains the operation of the DPS and then examines the drift data by first showing the Doppler velocities (V*) calculated for a fixed frequency ionogram as well as the velocities calculated from an interesting ionospheric disturbance measured with a stepped frequency ionogram and second by illustrating the presence of a variation in the AoA of ionospheric echoes at sunrise. The conclusion of the thesis is that a drift vertical incidence mode be developed to allow the simultaneous measurement of the scaled ionospheric parameters and the precise AoA and full Doppler spectrum information.
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Minář, Jan. "Kvalita povrchových úprav DPS a optimalizace testovacího kupónu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377120.
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This master’s thesis deals with measuring and evaluation of wetting for samples of different surface finishes, using a test coupon developed in cooperation with firm Gatema. It deals with surface finishes ENIG and immersion tin. For these samples deals with quality monitoring and periodic testing of these surface finishes. The solder using for tests is SAC305. Test methods are used for simulation of reflow soldering and wave soldering.
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Schneider, Tobias [Verfasser]. "Effekte von dendritischen Polyglycerolsulfaten (dPGS) auf den Gelenkknorpel bei Arthrose / Tobias Schneider." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2016. http://d-nb.info/1114137790/34.
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Araújo, Gustavo Medeiros de. "Uma infraestrutura para integração entre dispositivos computacionais heterogêneos baseada na especificação DPWS." Florianópolis, SC, 2009. http://repositorio.ufsc.br/xmlui/handle/123456789/93341.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da ComputaçãoMade available in DSpace on 2012-10-24T20:43:50Z (GMT). No. of bitstreams: 1 264175.pdf: 2505828 bytes, checksum: de0c0ea46b5d1374d5718d445e573637 (MD5)
Serviços computacionais têm proporcionado facilidades à vida das pessoas, provendo mais agilidade em operações e acesso a informação. Muitos desses serviços são providos por dispositivos que estão espalhados no ambiente de convívio comum. Alguns destes equipamentos podem se conectar e trocar dados entre si utilizando uma infra-estrutura de rede. Entretanto, um conjunto maior de serviços poderia ser oferecido se dispositivos que empregam diferentes tecnologias de comunicação também pudessem se conectar e trocar dados. Dessa forma, seria possível aproveitar classes diversas de equipamentos para construção de soluções que atendam cenários de aplicação diversos. Com o objetivo de proporcionar um mecanismo que reúna serviços oferecidos por dispositivos heterogêneos é proposto neste trabalho o Device Service Bus (DSB). O DSB consiste em uma infra-estrutura de middleware empregada para integração de diferentes dispositivos embarcados em ambiente de computação ubíqua. Baseado no Devices Profile for Web Services (DPWS) como tecnologia de integração, o DSB permite interação de vários dispositivos que adotam diferentes padrões de comunicação. Esse trabalho apresenta uma implementação de um protótipo do DSB, que provê componentes de software que são implantados em dispositivos responsáveis por construir um barramento de integração entre dispositivos heterogêneos. Além disso, dois cenários de aplicação real reunindo sensores Sun SPOT e leitores RFID, e medições de desempenho obtidas com estes dispositivos também são apresentados nesse trabalho.
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Pacheco-Olivella, Arsenio Andrew. "Synthesis, characterization, and reactivity with dioxygen, of Ru(OEP)(DPS)₂ and Ru(OEP)(DecMS)₂ [OEP= dianion of octaethylporphyrin; DPS= diphenylsulphide; DecMS= decylmethylsulphide]." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26020.
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The complexes Ru(OEP)(DPS)₂ (1) and Ru(OEP)(DecHS)₂ (2) were prepared in vacuo on a 100-mg scale by treatment of the dimeric species [Ru(OEP)]₂ (3) with a CH₂CI₂ solution containing a slight excess of the appropriate thioether [OEP= dianion of octaethylporphyrin; DPS= diphenylsulphide; DecMS= decylmethylsulphide]. In vacuo recrystallization, from n-heptane in the case of 1, and from n-pentane/methanol for 2, gave analytically pure material in 40 and 80 % yields, respectively. Both products were characterized by X-ray diffraction analysis, uv/vis absorption and nmr spectrometry, as well as elemental analysis.
Variable temperature nmr studies were carried out with both complexes. JL was found to be in thermodynamic equilibrium with 3, the dimer being favoured at about 80° C, and 1 at lower temperatures. Sharp nmr signals for the OEP protons of both equilibrating species, even at 80° C, indicated that exchange between them was slow on the nmr time scale; but, broadening and eventual coalescence at 80° C of the nmr signals for free and coordinated DPS suggested that the axial ligands of JL were quite labile. Cooling solutions of 2 caused the thioether methylene signals to broaden, and at -60° C the signals due to the methylenes closest to the sulphur split into broad doublets, this resulting from the prochiral nature of DecMS. The fact that only one nmr signal was observed for these methylene protons at room temperature implies rapid alternate coordination of the sulphur lone pairs.
The crystal structures of 1 and 2 revealed Ru-S bond lengths typical of Ru complexes containing trans-thioethers. The bond distances and angles of the porphyrin core were typical of those of monomeric Ru(Porp) complexes.
Dv/vis absorption, and nmr spectrometric studies, showed that 1 was extremely air-sensitive in solution, readily giving [Ru(OEP)OH]₂O and free DPS. Dv/vis absorption, nmr, and gc/mass spectrometric studies revealed that 2 reacted with dioxygen over a period of months to give Ru(OEP)(DecMS)(DecMSO) and Ru(OEP)(DecMSO)₂ as major products, as well as Ru(OEP)(CO)L (L= DecMS and DecMSO), and two other unidentified Ru(Porp) complexes as minor by-products [DecMSO= decylmethylsulphoxide].
In the presence of excess DecMS 2 catalyzed slow autoxidation of the free ligand to give DecMSO, DecMSO₂, and didecyldisulphide; the rate of this reaction was increased by addition of small quantities of HOAc [DecMSO₂ = decylmethyl-sulphone]. A major Ru(Porp) end-product both in the presence and absence of HOAc was Ru(OEP)(CO)L, the CO coming from Ru[sup II] (Porp)-mediated decarbonylation reactions.Science, Faculty of
Chemistry, Department of
Graduate
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Vala, Martin. "Analýza defektů na DPS za použití moderních optických metod." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-254482.
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This diploma thesis is focused on detecting of defects on BGA (Ball Grid Array) components using of X-ray. Defects are formed during reflow BGA components during assembly, but also later due to mechanical and thermal stress. Therefore, there is an overview of defects and methods of diagnosis of BGA packages eg .: modern X-ray defect detection or micro sections. There is disclosed a device NORDSON DAGE XD7600NT its operation and setup. The device enables advanced methods of scanning called X-plane. For creating 3D models used reconstructive software called CERA, which uses raw data from the method of X-Plane.
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Ford, Anthony W. "WV DPMS district level pavement management system for West Virginia DOH district 5 /." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1870.
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Thesis (M.S.)--West Virginia University, 2001.Title from document title page. Document formatted into pages; contains viii, 186 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 127-129).
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Hanquist, Carl-Henrik. "Airborne Radar Ground Clutter Suppression Using Multitaper Spectrum Estimation & Choosing DPSS Parameters." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71309.
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One of the biggest challenges in any airborne radar is to distinguish a target from a strong ground echo. The main problem is that the ground echo, called ground clutter, can be up to a million times stronger than the response from the target in question. Today many different filtering methods are used in airborne radar systems to separate the target signal from the ground clutter. All of them with their own advantages and shortcomings. In an ideal world the optimum filter would completely filter out the unwanted ground echo. But as ideal filters don't exist in reality a filter with low sidelobes and minimum loss in signal-to-interference ratio is sought after. A type of filter which exhibit this behaviour are discrete prolate spheroidal sequences (DPSS). This thesis investigated if DPSS could be used as weight functions in multitaper spectrum estimation to filter out ground clutter in the radar signal. A simple clutter model was developed for generating simulated ground clutter which was then filtered out by multitaper and a traditional method. Results showed that it is possible to use DPSS in multitaper spectrum estimation and that it outperforms a basic traditional method in clutter filtration as long as parameters such as bandwidth and the number of sequences used are chosen properly. The increase in performance against the traditional method comes at a cost of increased computational load with each additional DPSS order used. A full factorial experiment was also performed to investigate which parameters were important for maximising improvement factor and minimum detectable velocity. The results from these showed that a low bandwidth in the generation of the DPSS was preferable and that a high number of time samples and DPSS used improved performance. They also showed that for an increase in number of time samples the bandwidth and number of sequences used need to be adjusted to maintain the same level of the improvement factor. It was concluded that future work should focus on validation with more advanced clutter models and MTI filters in simulations as well as validation against real radar data. If proved successful, optimisation of calculation speeds as well as implementation of adaptive choice of DPSS bandwidth would be beneficial before being implemented in a radar system.En av de största utmaningarna i ett flygburet radarsystem är att urskilja ett mål från markekot. Problem uppstår eftersom markekot, kallat markklotter, kan vara upp emot en miljon gånger starkare än svaret från målet i fråga. I dagsläget används flera olika filtreringmetoder i flyburna radarsystem för att urskilja målet från markklottret, alla har sina fördelar och nackdelar. I en ideal värld skulle det optimala filtret filtrera ut markklottret fullständigt och endast bevara målsignalen. Eftersom dessa filter inte existerar i verkligheten eftersträvas istället ett filter med låga sidlober och minimal förlust i signal-till-interferens ration. En typ av filter som uppvisar detta beteende är diskreta prolata sfäroid sekvenser (DPSS). Denna uppsats undersöker ifall DPSS kan användas som viktfunktioner i multitaper spektralestimering för att filtrera ut markklotter i en radarsignal. En enkel klottermodell utvecklades för generering av simulerat markklotter som sedan filtrerades ut med multitaper metoden och en traditionell metod. Resultatet visade att det var möjligt att använda DPSS i multitaper spektralestimering och att metodens prestanda överstiger den traditionella meteoden, så länge parametrar som bandbredd och antal använda sekvenser väljs korrekt. Prestandaförbättringen mot den traditionella metoden uppstår mot en kostnad i beräkningstid som ökar med varje DPSS ordning som används. Ett full factorial experiment utfördes också för att undersöka vilka parametrar som hade störst påverkan för att maximera förbättringsfaktorn och minsta detekterbara hastighet. Resultated visade att låg bandbredd vid generering av DPSS var att föredra, samt att ett stort antal använda DPSS och tidssamples ökade prestandan. Resultaten visade också att för ett ökat antal tisdssamples så måste bandbredd och antal sekvenser som används justeras för att bibehålla samma nivå av förbättringsfaktorn. Slutligen rekommenderades det att framtida arbete borde fokusera på validering med mer avancerade klottermodeller och MTI filter i simuleringar, samt validering mot verklig radar data. Om detta visar sig framgångsrikt bör optimering av beräkningstid och implementation av ett adaptivt val av DPSS bandbredd göras före implementering i ett radarsystem.
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Rehn, Alexandra [Verfasser]. "Adjectives and the Syntax of German(ic) DPs / Alexandra Rehn." Konstanz : KOPS Universität Konstanz, 2019. http://d-nb.info/1198680474/34.
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Sang, Tingting. "Integrated Electro-thermal Design Methodology in Distributed Power Systems (DPS)." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9678.
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Although suitable CAD tools for thermal and electrical analyses in power electronic systems are available, traditional stand-alone simulation method seldom takes into consideration of the inter-dependency of semiconductor device power loss and junction temperature in an iterative process. However these dependencies are important, especially for applications where both cooling and power losses are driven by complex mechanisms.
For a power supply system, a dynamic design process is necessary to address both electrical and thermal issues. It is because the steady state temperatures of the system are obtained from loss-and-temperature iteration. Once a system solid body model is built, iterations between power loss and junction temperature calculations are performed to obtain the steady state temperature distribution. Since reliability and failure rate of components are directly related to temperatures, an accurate model is critical to provide proper thermal management, which achieves maximum power density. All cooling-related data such as placement of components, airflow rate, heat sink size, and device types are subjected to design changes in order to meet ultimately the temperature requirements.
The goal of this thesis is to demonstrate the benefits of integrated analysis and design tools applied in distributed power supply systems designs. First, it will significantly speed up the design process and eliminate the errors resulting from repeated manual data entry and information exchange. Second, the integrated electrical-thermal design tools encompass electrical, thermal, layout, and packaging design to obtain the optimal system design.Master of Science
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Hitchings, Matthew D. "Biochemical and structural analysis of the Streptomyces coelicolor Dps proteins." Thesis, Swansea University, 2013. https://cronfa.swan.ac.uk/Record/cronfa42992.
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The three DNA protection proteins from starved cells (Dps) of Streptomyces coelicolor are members of the min-ferritin super family. Considered to be of major importance to stress response systems in microorganisms. Dps proteins can aid microbial survival in extreme conditions. The S. coelicolor Dps proteins are not only induced in response to stress in a stimulus-dependent manner, but dual regulation allows these proteins to play a role in bacterial cell division; influencing condensation of nucleoids during spore formation. This study investigates the structural and functional properties of the ScDps proteins and finds multiple ways in which the homologs differ.
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Chloupek, Tomáš. "Hodnocení materiálových a procesních faktorů na DPS metodou smáčecích vah." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217899.
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This work deals with issues of the wetting forces during soldering and evaluates material and procedural effects on the soldering process. The aim is to set the technology operations to get best quality of soldered joints.
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Heyer, Elodie. "Elaboration d'édifices multi-chromophoriques à base de DPPs et BODIPYs : vers des applications photovoltaïques." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF022/document.
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Les travaux réalisés au cours de cette thèse ont consisté en l’élaboration d’édifices multi-chromophoriques pour des applications en cellules solaires organiques. La conception de ces nouveaux matériaux a été guidée par trois paramètres : (i) l’augmentation de la planéité pour une meilleure organisation intermoléculaire ; (ii) la modulation de la fenêtre spectrale d’absorption pour capter un maximum de photons ; (iii) l’enrichissement électronique des matériaux pour faciliter la séparation des charges. Notre choix s’est porté sur les hydrocarbures aromatiques polycycliques, de part leurs propriétés structurantes bien connues. La synthèse du 2-bromodibenzo[g,p]chrysène a été réalisée par des réactions de type Scholl intramoléculaires, puis sa dérivatisation a permis de synthétiser des matériaux correspondants. La mono-fonctionnalisation d’un synthon benzo[1,2-b:3,4-b’:5,6-b’’]trithiophène a également été effectuée. Des BODIPYs dithiényles α-fusionnés ont ensuite été synthétisés selon une procédure originale de couplages oxydants intramoléculaires, permettant d’obtenir des composés plans, fonctionnalisés et fonctionnalisables, tout en contournant la chimie contraignante du pyrrole. L’obtention de dyades et triades à base de DPPs, de BODIPY et de triphénylamines ont permis d’obtenir des composés panchromatiques et d’étudier les phénomènes d’extinction de la fluorescence par spectroscopies statiques et ultrarapides. Un dernier projet a porté sur des édifices de type D-A-D à base de BODIPYs et amines aromatiques tertiairesThe projects developed in this thesis consisted in the elaboration of multi-chromophoric scaffolds towards applications in bulk heterojunction organic solar cells. The design of the materials was guided by three main parameters: (i) the increase of the planarity to observe a better intermolecular organization; (ii) the broadening of the spectral absorption window in order to maximize the number of absorbed photons; (iii) the increase of the electronic density in order to facilitate the charge separation. First, the structural properties of mono-functionalized polycyclic aromatic hydrocarbons (PAH) were investigated with the synthesis of 2-bromodibenzo[g,p]chrysene by Scholl type reactions, followed by its functionalization and the development of related materials. Then we also focused on another PAH: benzo[1,2-b:3,4-b’:5,6-b’’]trithiophene and its subsequent functionalization. α-Fused dithienyl BODIPYs were then built according to an original procedure based on intramolecular oxidative coupling reactions. Substituted and functionalizable planar compounds were obtained bypassing the instability of the pyrrole ring chemistry. Subsequently, the elaboration of dyads and triads based on DPPs, BODIPY and triphenylamines led to the examination of the fluorescence quenching process by static and ultrafast spectroscopies. A last project consisted in the study and applications of D-A-D edifices based on BODIPYs and ternary aromatic amines
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Angiolini, Emanuele. "Contribution to the understanding of filtration and pressure drop phenomena in wall-flow DPFs." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/86157.
Full textAbstract:
From the last decades of the 20th century, internal combustion engines
have undergone a continuous improvement process aimed to the increase
of their efficiency and decrease of the pollutants emissions. The reduction
of the availability of fossil fuel and the increase of human-made pollution
observed in the last decades is leading worldwide to more stringent
emission standards that make the engine manufacturers to constantly
look for fuel consumption and emission reductions while keeping engine
performance.
To comply with current and incoming emission regulations, the exhaust
line of internal combustion engines has been gradually complicated by the
presence of aftertreatment systems. Among them, the particulate filter
is the device in charge of abating the emission of soot in the atmosphere.
Concerning compression ignition engines, diesel particulate filters (DPF)
were first commercially utilized in significant numbers in passenger car
and heavy-duty engines since the beginning of the 21st century. Euro
6 emission standards limits the emitted particulate matter from direct
injection engines, thus extending the use of particulate filters also to direct
injection gasoline engines.
A deep knowledge of the phenomena happening inside the DPF is
required for the correct understanding of the behaviour of this system and
its interaction with the engine. The precise knowledge of the filtration and
pressure drop processes is mandatory for the design of the particulate filter
and is also essential to wisely think up and analyse solutions aimed to
limit the negative impact of the filter on the fuel consumption maintaining
its capability of retaining soot particles.
Thus, the present work pretends to provide a contribution to the understanding
of these phenomena in wall-flow DPFs. The problem has been
faced on a computational and experimental basis. A notable part of the
work was dedicated to the development and validation of a one-dimensional
DPF filtration model to be coupled with the existing pressure drop model.
The model was implemented in OpenWAM¿, the open-source gas dynamics
software for internal combustion engines and components computation
developed at CMT - Motores Térmicos.
The developed computational tool was applied to the assessment of
the aftertreatment (DOC&DPF) volume downsizing potential in post- and
pre-turbo aftertreatment configuration. The study is completed with experimental
analysis to support theoretical insights discussing how the soot
deposition profile and the particulate layer properties impact on the DPF
pressure drop.Desde las últimas décadas del siglo XX, se ha producido un proceso de mejora continua de los motores de combustión interna alternativos con el fin de aumentar su eficiencia y reducir las emisiones contaminantes. La reducción de la disponibilidad de combustibles fósiles y el incremento de la polución de origen antropogénico observados en las ultimas décadas ha provocado el progresivo endurecimiento de las normativas anticontaminación a nivel mundial obligando a los fabricantes de motores a buscar la reducción continua del consumo de combustible y emisiones, manteniendo las prestaciones del motor. El cumplimiento de las actuales y futuras normativas anticontaminación requiere de la instalación de diversos sistemas de postratamiento de gases en la línea de escape de los motores de combustión interna alternativos, aumentando su complejidad. Entre estos sistemas, el filtro de partículas es el equipo encargado de la reducción de la emisión de hollín a la atmósfera. Con respeto a los motores de encendido por compresión, los filtros de partículas diésel se implementaron por primera vez de forma masiva en vehículos de pasajeros y vehículos pesados a principio del siglo XXI. La normativa anti contaminación Euro 6 limita las emisiones de partículas de los motores de inyección directa, extendiendo el uso de filtros de partículas a los motores de inyección directa de gasolina. Es necesario tener un conocimiento profundo de los fenómenos que tienen lugar en el DPF para comprender el comportamiento de este sistema y su interacción con el motor. El conocimiento de los procesos de filtrado y perdida de presión es vital para el diseño del filtro de partículas y resulta esencial para encontrar y analizar soluciones que ayuden a limitar el impacto negativo del DPF sobre el consumo de combustible sin perder la capacidad de retener partículas de hollín. En este contexto, este trabajo pretende aportar una contribucción a la comprensión de estos fenómenos en filtros de partículas de flujo de pared. Esta tarea se ha planteado desde un punto de vista computacional y experimental. Parte importante de este trabajo ha consistido en el desarrollo y validación de un modelo de filtrado unidimensional de DPF que se ha acoplado con el modelo de caida de presión ya existente. El modelo se ha implementado en OpenWAM¿, el software de libre acceso para el cálculo fluidodinámico de motores de combustión interna y sus componentes desarrollado en CMT - Motores Térmicos. La herramienta computacional desarrollada se ha aplicado a la evaluación del potencial de reducción de volumen de sistemas de postratamiento (DOC&DPF) en configuraciones post- y pre-turbo. Este estudio se ha completado con un análisis experimental para dar respaldo a los conceptos teóricos empleados discutiendo como el perfil de deposición del hollín y las propiedades de la capa de partículas afectan a la perdida de presión del DPF.
Des les últimes dècades del segle XX, s'ha produït un procés de millora contínua dels motors de combustió interna alternatius amb l'objectiu d'augmentar la seua eficiència i reduir les emissions contaminants. La reducció de la disponibilitat de combustibles fòssils i l'increment de la polució d'origen antropòlogic observats en les últimes dècades ha provocat que les normatives anticontaminació s'han fet més rígides a nivell mundial, obligant als fabricants de motors a buscar la reducció contínua del consum de combustibles i emissions, mantenint les prestacions dels motors. El cumpliment de les normes anticontaminació actuals i futures, requereixen de l'instalació de diversos sistemes de post-tractament de gasos a l'eixida dels motors de combustió interna alternatius, llavors augmentant la complexitat. Entre aquestos sistemes, el filtre de partícules es l'equip encarregat de la reducció de les partícules de sutge a l'atmosfera. Respecte als motors d'encès per compressió, els filtres de partícules van instalar-se de manera massiva als vehicles de passatgers i vehicles pesats al principi del segle XXI. La normativa anti contaminació Euro 6 limita les emissions de partícules dels motors d'inyecció directa, estenent l'ús del filtre de partícules als motors d'injecció directa de gasolina. És necessari tindre un coneixement dels fenòmens que tenen lloc al DPF per a comprendre el comportament del sistema i la seua interacció amb el motor. El coneixement dels processos de filtrat i la pèrdua de pressió és vital per al diseny del filtre de partícules i resulta essencial per a trobar i analitzar les solucions que ajuden a limitar l'impacte negatiu del DPF sobre el consum de combustible sense perdre la capacitat de retenir partícules de sutge. En aquest context, el projecte pretén aportar una contribució a la comprensió d'aquestos fenòmens en els filtres de partícules de flux de paret. Aquesta feina s'ha plantejat des d'un punt de vista computacional i experimental. Part important d'aquest treball ha consistit en el desenvolupament i validació d'un model de filtrat unidimensional de DPF que s'ha acoplat a un model de pèrdua de pressió existent. El model s'ha implementat en OpenWAM¿, el software de lliure accés per al cálcul fluidodinámic de motors de combustió interna i els seus components desenvolupats al CMT - Motores Térmicos. La ferramenta computacional desenvolupada s'ha aplicat a la evaluació del potencial de reducció del volum de sistemes de post tractament (DOC&DPF) en les configuracions post- i pre-turbo. Aquest estudi s'ha completat amb una anàlisi experimental per a donar suport als concepts teòrics emprats discutint com el perfil de la disposició de sutge i les propietats de la capa de partícules que afecten a la pèrdua de pressió del DPF.
Angiolini, E. (2017). Contribution to the understanding of filtration and pressure drop phenomena in wall-flow DPFs [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/86157
TESIS
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Ssessanga, Nicholas. "Investigation into the extended capabilities of the new DPS-4D ionosonde." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1005257.
Full textAbstract:
The DPS-4D is the latest version of digital ionosonde developed by the UMLCAR (University of Massachusetts in Lowell Center for Atmospheric Research) in 2008. This new ionosonde has advances in both the hardware and software which allows for the promised advanced capabilities. The aim of this thesis was to present results from an experiment undertaken using the Hermanus DPS-4D (34.4°S 19.2°E, South Africa), the first of this version to be installed globally, to answer a science question outside of the normally expected capabilities of an ionosonde. The science question posed focused on the ability of the DPS-4D to provide information on day-time Pc3 pulsations evident in the ionosphere. Day-time Pc3 ULF waves propagating down through the ionosphere cause oscillations in the Doppler shift of High Frequency (HF) radio transmissions that are correlated with the magnetic pulsations recorded on the ground. Evidence is presented which shows that no correlation exists between the ground magnetic pulsation data and DPS-4D ionospheric data. The conclusion was reached that although the DPS-4D is more advanced in its eld of technology than its predecessors it may not be used to observe Pc3 pulsations.
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Ježík, Jan. "Studium dielektrické relaxace v základních materiálech DPS a v izolacích kabelů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219358.
Full textAbstract:
This study investigates relaxation polarization in some dielectric components of tester UNISPOT S40 developed by company UNITES Systems a.s. Relaxation polarization in the PCB substrates and in tester’s cable insulation causes undesirable deceleration of some test steps. Relaxation polarization in selected PCB substrates and various cables are examined by method of dielectric relaxation spectroscopy in the frequency domain and by measurement of polarization or depolarization current.
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Meyer, Troeltsch Reinhart Karl. "La construcción iterativa de un instrumento para medir las tres actitudes centrales en la terapia de la imperfección ti." Thesis, Universidad de las Américas Puebla, 2010. http://catarina.udlap.mx/u_dl_a/tales/documentos/dps/meyer_t_rk/.
Full textAbstract:
El fundador de la Terapia de la Imperfección, Ricardo Peter, construyó su teoría sobre tres actitudes centrales: El ansia de la Perfección "Perf", la aceptación de límites existenciales "ALE" y la aceptación del ser, adoptada como autovaloración nuclear "AN". En ausencia de estudios cuantitativos, esta investigación propuso construir instrumentos para medir estas actitudes.
Los constructos ALE y AN, por su complejidad conceptual, igual que afectiva, presentaron un reto mayor para su definición operacional y la redacción de sus reactivos. Metodológicamente era necesario construir primero tres instrumentos por separado, para luego depurar los mejores reactivos de cada uno, al interactuar todos en los análisis factoriales de tres sucesivos instrumentos combinados, mejorando de aplicación en aplicación los reactivos.
El factor Perf mostró tener una sólida validez de constructo al diferenciar un grupo de personas anancásticas, y por otros criterios de validez discriminante y convergente.
El factor ALE diferenció sujetos según los criterios establecidos.
AN no era autoestima ni cuadró en el auto concepto. AN era más elevada en los mejores estudiantes y deportistas, y más baja en depresivos internos. Cumpliendo además las expectativas de validez de criterio, AN promete ser una nueva dimensión en la teoría de la personalidad.
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Gonz��lez, Macip Socorro. "Estilos de apego, conductas sexuales de riesgo e ideaci��n suicida en estudiantes universitarios." Thesis, Universidad de las Am��ricas Puebla, 2009. http://catarina.udlap.mx/u_dl_a/tales/documentos/dps/gonzalez_m_s/.
Full textAbstract:
La presente investigaci��n identific�� que estilos de apego pueden determinar una conducta sexual de riesgo e intencionalidad suicida en poblaci��n joven.
Para operar el constructo de apego se clasificaron los estilos: seguro, evitante y ansioso, distribuy��ndose en altos y bajos. Las hip��tesis se comprobaron en funci��n del patr��n de la conducta sexual de riesgo, con pareja sexual regular y ocasional, y la ideaci��n suicida. Se utiliz�� la escala de apego, la subescala: patr��n de conducta sexual, y la escala de ideaci��n suicida. El an��lisis estad��stico empleado: tablas de contingencia y el coeficiente de correlaci��n de rangos de Spearman.
En la conducta sexual de riesgo con el estilo de apego evitante, existe una relaci��n de dependencia. El estilo ansioso no se relacion�� con la conducta sexual de riesgo y en el estilo seguro la relaci��n fue positiva baja. La ideaci��n suicida estableci�� relaci��n inversa con el estilo evitante y ansioso. El estilo seguro obtuvo relaci��n positiva baja.
Al indagar c��mo se han manifestado los estilos de apego, que favorecen o limitan las interacciones sociales y la experiencia emocional, percibimos, que los j��venes reincidentemente tienden a lesionar su integridad f��sica, e incluso existencial, al tener reiterados pensamientos autodestructivos y comportamientos sexuales en condiciones inseguras.
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Carrillo, Árcega María de Lourdes. "Adaptación, ansiedad y autoestima en niños: comparación entre escuelas tradicional y Montessori." Thesis, Universidad de las Américas Puebla, 2010. http://catarina.udlap.mx/u_dl_a/tales/documentos/dps/carrillo_a_md/.
Full textAbstract:
En el presente trabajo se describen y comparan los niveles de adaptación,
ansiedad y autoestima registrados en 72 alumnos de escuela tradicional y 65 de
escuela Montessori de la ciudad de Puebla, de entre 9 y 12 años de edad. No
habiendo encontrado diferencias estadísticamente significativas en las tres
variables estudiadas entre estas dos escuelas, es dado concluir que tanto la
adaptación, como la ansiedad y la autoestima son fenómenos determinados por
una multiplicidad de factores tanto internos (inteligencia, personalidad,
maduración, aptitudes, actitudes, entre otros.), como externos (familia, escuela,
sociedad, cultura), que actúan interrelacionados.
Así mismo se establecen las correlaciones existentes entre adaptación,
ansiedad y autoestima.
Se describen, además, los análisis factoriales aplicados a los tres
instrumentos psicométricos utilizados en esta investigación, ya que dos fueron
generados en España y otro en Estados Unidos de América.
Se recomienda que, ante la escasez de instrumentos psicométricos
construidos y validados en nuestro país, se promuevan investigaciones que
tengan como fin la producción y difusión de tests en México, lo que permitirá
realizar estudios confiables y válidos en el campo de la Psicología.
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Velázquez, Romero Yolanda. "Relación entre la diferenciación del self y el bienestar subjetivo en jóvenes mexicanos." Thesis, Universidad de las Américas Puebla, 2011. http://catarina.udlap.mx/u_dl_a/tales/documentos/dps/velazquez_r_y/.
Full textAbstract:
La presente investigación tuvo como objetivo establecer
la relación entre la diferenciación del self y el
bienestar subjetivo en mujeres y hombres jóvenes
mexicanos. Fue un estudio de campo de tipo correlacional y
comparativo, con una muestra poblacional no
probabilística. Participaron 500 sujetos, estudiantes de
licenciatura y maestría de dos universidades, y empleados
de una empresa automotriz en Puebla. El 60% eran hombres y el 40%
mujeres. La edad promedio fue de 23.2 años con una
desviación estándar de 4.65.
Los instrumentos de medición fueron: Hoja de datos
generales, Inventario de Diferenciación del Self, DSI,
(Skowron & Friedlander, 1998) estandarizado en Puebla por
Sansores (2003), y la prueba de Bienestar Subjetivo, BS, (Ryff,
1989). El análisis estadístico empleado: prueba r
de Pearson, prueba t de student, Anova de un factor.
Respecto a los resultados obtenidos, se encontró
correlación estadísticamente significativa entre
los factores reactividad emocional, posición del yo y
corte emocional del DSI y los factores de la prueba de BS;
así como entre el factor fusión con otros del DSI y
los factores autonomía y relación positiva con los
demás de la prueba de BS. Lo que permitió ver que
existe una correlación positiva estadísticamente
significativa entre la diferenciación del self y el
bienestar subjetivo; es decir, a mayor diferenciación del
self mayor bienestar subjetivo en mujeres y hombres
jóvenes mexicanos.
En la comparación de medias de los factores del DSI, se
encontró que las mujeres presentan mayor reactividad
emocional y más fusión con otros que los hombres.
En los factores de la prueba de BS, los hombres mostraron mayor
relación positiva con los demás, mayor
propósito de vida y más crecimiento personal que
las mujeres. En síntesis, los hombres manifestaron tener
mayor diferenciación del self y mayor bienestar subjetivo
que las mujeres de la muestra estudiada.
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Pinto, Raffael Costa de Figueiredo. "Propriedades térmicas, dielétricas e vibracionais de Ormosil's baseados em DPMS e TEOS dopados com MDS." Universidade Federal do Maranhão, 2008. http://tedebc.ufma.br:8080/jspui/handle/tede/1584.
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Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão (FAPEMA)
In this work have been investigated the dielectric and vibrational properties of the ORMOSIL membranes based on PDMS and TEOS doped with MDS using the Di erential Scanning Calorimetry (DSC), impedance, Raman and infrareds spectroscopy technics. Such membranes are hybrid organic-inorganic materials with potential application in PEMFC (Proton Exchange Membrane Fuel Cell) and were doped with concentrations 0%(Pure Membrane), 5%, 10%, 20% e 30% of MDS. The thermal measurements were performed in the range from room temperature and 550 oC. The results showed that, after the MDS inclusion, the membranes absorb water. Besides, then thermal stability of the membranes decreased with the MDS inclusion. The dielectrics measurements were performed in temperature range of 313K-373K. The results showed that room temperature conductivity increases linearly with the frequency, until 353K, suggesting a hopping conduction and leaving this linear behavior above 353K. Besides, it was observed that conductivity doesn't increases linearly with MDS concentration, but increases until maximal value for 20% MDS concentration and decreases again for 30% MDS concentration de ning a synergetic e ect, which probably is associate with con gurational arrange of microcristallites MDS. Another feature of that membranes is a relaxation process visible in the electrical module graphics which appear just in doped membranes, being however, due to the MDS. The vibrational properties of hybrids membranes were obtained through Raman scattering and infrared. The results con rmed the presence of Si¡O¡Si, Si¡C, Si¡OH, C2H5, Si¡CH3, CH3, CH2, C¡H, S=O and S¡O groups. Where the S=O and S¡O groups are presents just in MDS compound. Consequently, their respective peaks appear only in the doped membrane spectra.
Neste trabalho foram investigadas as propriedades térmicas, dielétricas e vibracionais das membranas de ORMOSIL baseadas em PDMS e TEOS dopadas com MDS através das técnicas de calorimetria diferencial de varredura, espectroscopias de impedância, Raman e infravermelho. Essas membranas são materiais híbridos orgânico-inorgânico com grande potencialidade de aplicação em células combustíveis do tipo PEM (Proton Exchange Membrane) e foram dopadas nas concentrações de 0%(Pura), 5%, 10%, 20% e 30% de MDS. As medidas térmicas foram realizadas entre a temperatura ambiente e 500 oC e mostraram que as membranas passam a absorver água quando o MDS é inserido. Mostraram também que as membranas têm sua estabilidade térmica reduzida quando o MDS é inserido. As medidas dielétricas foram realizadas no intervalo de temperatura entre 40 e 100oC. Os resultados mostraram que a condutividade à temperatura ambiente aumenta de maneira praticamente linear com a freqüência, mantendo-se assim até 80±C sugerindo uma condução por hopping e deixando de ter esse comportamento linear para temperaturas acima de 80±C. Observou-se também que a condutividade não aumenta linearmente com a concentração de MDS, mas atinge um valor máximo para a membrana com 20% de MDS e diminui novamente para a membrana com 30% de MDS caracterizando assim um efeito sinergético, que provavelmente está associado ao arranjo configuracional dos microcristalitos do MDS. Uma outra característica interessante dessas membranas, é um processo de relaxação visível nos grá cos do módulo elétrico o qual consta apenas nas membranas dopadas, sendo portanto, característico do MDS. As propriedades vibracionais desses materiais híbridos foram determinadas através de medidas do espalhamento Raman. Os resultados da espectroscopia Raman e infravermelho confirmaram a presença dos grupos Si¡O¡Si, Si¡C, Si¡OH, C2H5, Si¡CH3, CH3, CH2, C¡H, S=O e S¡O. Onde estes dois últimos estão presentes somente no MDS e, por essa razão, seus respectivos picos só se apresentaram no espectro das membranas dopadas.
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Gull, Erica. "Upplevd beroendefokuserad psykologisk kontroll och dess inverkan på social ångest : En kvantitativ enkätstudie om relationen mellan beroendefokuserat psykologiskt kontrollerande föräldrar och social ångest hos svenska ungdomar." Thesis, Karlstads universitet, Institutionen för sociala och psykologiska studier, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-57033.
Full textAbstract:
Studiens syfte var att undersöka relationen mellan upplevd beroendefokuserad psykologisk kontroll och social ångest hos ungdomar, för att se om det fanns skillnader i ungdomars sociala ångest avseende deltagarens och förälderns kön, samt grad av beroendefokuserad psykologisk kontroll. Data samlades in via det pågående forskningsprojektet Trestadsstudien genom enkätundersökning våren 2015. Beroendefokuserad psykologisk kontroll mättes med subskalan för DPC i DAPCS, och social ångest mättes med SPSQ-C. Totalt deltog 2958 elever i åttonde och nionde klass från tolv svenska skolor i undersökningen. Data analyserades via korrelationer, t-test och ANOVA. Resultatet visade på signifikanta positiva korrelationer mellan upplevd beroendefokuserad psykologisk kontroll och social ångest, och signifikanta huvudeffekter i form av deltagarens kön och grad av upplevd beroendefokuserad psykologisk kontroll avseende social ångest. Vidare påvisades det att pojkar i högre utsträckning än flickor upplevde beroendefokuserad psykologisk kontroll från fadern, samt att flickor hade en högre grad av social ångest. Slutsatser som drogs utifrån resultatet var att upplevd beroendefokuserad psykologisk kontroll tycks vara en bidragande orsak till utvecklandet av social ångest hos ungdomar, men att bakomliggande variabler med stor sannolikhet bidrar till ångesten, och då främst hos flickor. Vidare lyftes andra områden av intresse för eventuell fortsatt forskning kring de båda fenomenen utifrån studiens resultat. Avslutningsvis nämndes även praktiska förslag på vad som skulle kunna göras i skolor för att uppmärksamma fenomenen och hjälpa de ungdomar som lider av social ångest och utsätts för beroendefokuserad psykologisk kontroll.The purpose of the study was to examine the relation between experienced dependency-oriented psychological control and social anxiety in adolescents, and if there were any differences in adolescents’ social anxiety depending on the participant’s and the parent’s gender, as well as degree of experienced dependency-oriented psychological control. Data was collected via the ongoing project Trestadsstudien through a survey conducted during the spring of 2015. Dependency-oriented psychological control was measured with the subscale for DPC in DAPCS, and social anxiety with SPSQ-C. 2958 students in eight and ninth grade from twelve Swedish schools participated. Data was analyzed via correlations, t-tests and ANOVA. Results showed significant positive correlations between experienced dependency-oriented psychological control and social anxiety, as well as significant main effects in the form of the participant’s gender and degree of experienced dependency-oriented psychological control regarding social anxiety. Results also showed that boys to a higher extent experienced dependency-oriented psychological control from their fathers, and that girls experienced more social anxiety. It was concluded that experienced dependency-oriented psychological control seems like a contributing factor to the development of social anxiety, but that other underlying variables likely contribute to the anxiety, and mostly in girls. Other areas of interest for future research concerning both phenomena were pointed out based on the results. Lastly some practical suggestions were made regarding what could be done in schools to note the phenomena and help the adolescents who suffer from social anxiety and are subjected to dependency-oriented psychological control.
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Wallace, Kenneth N. "Analysis of Dpn, a HES type transcription factor, in Drosophila melanogaster neurogenesis /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487951214937741.
Full text
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Yung, Yat Fong. "Digital pixel sensor (DPS) array based on pulse width modulation (PWM) scheme /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20YUNG.
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Toufar, Michal. "Analýza metod nanášení tavidel a pájecích past na DPS pro BGA komponenty." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241971.
Full textAbstract:
This thesis deals with rework of BGA components. There are described defects and errors in a solder joints. The current trend is focused on thin packages with fine pitch. It is assembled with smaller and smaller solder balls. It is described effect of different application of flux and solders paste for rework. The main part is focused on dipping and dispensing. These methods are suitable for repair process.
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Nestrojil, Martin. "Zpracování DPS silových a datových rozvodů pro historickou a památkově chráněnou budovu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377124.
Full textAbstract:
This thesis is describing DPS power and data circuits installations for a historical listed building. Firstly, the theory describes requirements for architects and designs, the types of designs, the laws and directives. This part also contains instructions on how to lay the circuits, how to create environmental report and other topics closely related to design and architecture. Secondly, there is description of the design of the power and data installations for the building. The third practical section contains full project design documentation for power and data circuits for this building including technical drawing, environmental report, ground plans of the building, drawings of switchboards and block drawings. The outcome of this report is to present the theory and then create all relevant documentation for this historical building.
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Alli, Idd Pazi. "Channel estimation in mobile wireless systems." Thesis, KTH, Signalbehandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98754.
Full textAbstract:
The demands of multimedia services from mobile user equipment (UE) for achieving high data rate, high capacity and reliable communication in modern mobile wireless systems are continually ever-growing. As a consequence, several technologies, such as the Universal Mobile Telecommunications System (UMTS) and the 3rd Generation Partnership Project (3GPP), have been used to meet these challenges. However, due to the channel fading and the Doppler shifts caused by user mobility, a common problem in wireless systems, additional technologies are needed to combat multipath propagation fading and Doppler shifts. Time-variant channel estimation is one such crucial technique used to improve the performance of the modern wireless systems with Doppler spread and multipath spread. One of vital parts of the mobile wireless channel is channel estimation, which is a method used to significantly improve the performance of the system, especially for 4G and Long Term Evolution (LTE) systems. Channel estimation is done by estimating the time-varying channel frequency response for the OFDM symbols. Time-variant channel estimation using Discrete Prolate Spheroidal Sequences (DPSS) technique is a useful channel estimation technique in mobile wireless communication for accurately estimating transmitted information. The main advantage of DPSS or Slepian basis expansion is allowing more accurate representation of high mobility mobile wireless channels with low complexity. Systems such as the fourth generation cellular wireless standards (4G), which was recently introduced in Sweden and other countries together with the Long Term Evolution, can use channel estimation techniques for providing the high data rate in modern mobile wireless communication systems. The main goal of this thesis is to test the recently proposed method, time-variant channel estimation using Discrete Prolate Spheroidal Sequences (DPSS) to model the WINNER phase II channel model. The time-variant sub-carrier coefficients are expanded in terms of orthogonal DPS sequences, referred to as Slepian basis expansions. Both Slepian basis expansions and DPS sequences span the low-dimensional subspace of time-limited and band-limited sequences as Slepian showed. Testing is done by using just two system parameters, the maximum Doppler frequency Dmax v and K, the number of basis functions of length N = 256. The main focus of this thesis is to investigate the Power spectrum and channel gain caused by Doppler spread of the WINNER II channel model together with linear fitting of curves for both the Slepian and Fourier basis expansion models. In addition, it investigates the Mean Square Error (MSE) using the Least Squares (LS) method. The investigation was carried out by simulation in Matlab, which shows that the spectrum of the maximum velocity of the user in mobile wireless channel is upper bounded by the maximum normalized one-sided Doppler frequency. Matlab simulations support the values of the results. The value of maximum Doppler bandwidth vDmax of the WINNER model is exactly the same value as DPS sequences. In addition to the Power spectrum of the WINNER model, the fitting of Slepian basis expansion performs better in the WINNER model than that of the Fourier basis expansion.
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Kamran, Beenish, Kate Beatty, LeighAnne Hurst, and Deborah L. Slawson. "Identifying Motivators and Barriers for Wellness Programs to Inform Recruitment and Retention of Diabetes Prevention Programs (DPPs)." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/62.
Full textAbstract:
Obesity and type 2 diabetes (T2DM) has increased greatly in incidence in the United States over the past decade. Diagnosis of T2DM is typically preceded by insulin resistance, which is typically indicated by increases in fasting blood sugar and called pre-diabetes. The Diabetes Prevention Program (DPP) is a group-based program focused on improving diet and maintaining consistent exercise towards a lower body weight. It has been found that minimum weight loss and 150 minutes of moderate exercise is more effective at preventing T2DM than medication-based treatment. Therefore, the DPP has potential in preventing T2DM however currently faces obstacles concerning recruitment and retention. Unfortunately, only 1-5% of individuals who would benefit from the program actually sign up. In order to address this, researchers obtained RDC funding and partnered with YMCA to determine barriers and motivators to the DPP. Individuals were invited to an on-campus, pilot DPP aimed towards employees in a single building. All employees received an invitation to give feedback in 1 of 3 focus groups: 1 with those who joined the program and 2 with employees who did not join. There were 4 individuals in the focus group for DPP participants and 18 total who attended the other focus groups (one group of 5, and one group of 13). The focus group for current participants was scheduled during the time of a normal weekly meeting, while the group for non-DPP participants was during lunchtime. Questions centered around individuals' perceptions on wellness programs, barriers to participation, and recommendations. Thematic analysis was done on notes taken at each focus group. Motivators found in the focus group with DPP participants included family history of diabetes, weight loss, desire to take control of lifestyle, hearing success stories, and support from others. A challenge faced by individuals going through the program included unsupportive family members or home environment. Themes found among the non-DPP participant focus groups gave greater insight in the negatives and barriers to wellness programs. Themes emphasized included importance of convenience, variability, coworker support, and appealing to individual interests. Overlapping themes included convenience, coworker support, and the importance of steering away from the 'diabetes' or 'prediabetic' labels. This study has significant impact especially in Tennessee where the DPP has become a covered benefit under insurance. In order to ensure strong recruitment and retention of these programs across the state and nation, researching further and addressing the motivators and barriers identified is key. With the DPP having such great potential in reducing risk of diabetes and obesity, a strong, intentional recruitment plan is necessary.
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Hinterwimmer, Stefan. "The interpretation of Universally Quantified DPs and singular definites in adverbially quantified sentences." Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2008/1940/.
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This paper deals with the conditions under which singular definites, on the one hand, and universally quantified DPs, on the other hand, receive interpretations according to which the sets denoted by the NP-complements of the respective determiner vary with the situations quantified over by a Q-adverb. I show that in both cases such interpretations depend on the availability of situation predicates that are compatible with the presuppositions associated with the respective determiner, as co-variation in both cases comes about via the binding
of a covert situation variable that is contained within the NP-complement of the respective determiner. Secondly, I offer an account for the observation that the availability of a co-varying interpretation is more constrained in the case of universally quantified DPs than in the case of singular definites, as far as word order is concerned. This is shown to follow from the fact that co-varying
definites in contrast to universally quantified DPs are inherently focus-marked.
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Sewall, Evan Andrew. "Development of a Thermal Management Methodology for a Front-End DPS Power Supply." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/35488.
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Thermal management is a rapidly growing field in power electronics today. As power supply systems are designed with higher power density levels, keeping component temperatures within suitable ranges of their maximum operating limits becomes an increasingly challenging task. This project focuses on thermal management at the system level, using a 1.2 kW front-end power converter as a subject for case study. The establishment of a methodology for using the computer code I-deas to computationally simulate the thermal performance of component temperatures within the system was the primary goal.
A series of four benchmarking studies was used to verify the computational predictions. The first test compares predictions of a real system with thermocouple measurements, and the second compares computational predictions with infrared camera and thermocouple measurements on a component mounted to a heat sink. The third experiment involves using flow visualization to verify the presence of vortices in the flow field, and the fourth is a comparison of computational temperature predictions of a DC heater in a controlled flow environment.
A radiation study using the Monte Carlo ray-trace method for radiation heat transfer resulted in the reduction of some component temperature predictions of significant components. This radiation study focused on an aspect of heat transfer that is often ignored in power electronics.
A component rearrangement study was performed to establish a set of guidelines for component placement in future electronic systems. This was done through the use of a test matrix in which the converter layout was varied a number of different ways in order to help determine thermal effects. Based on the options explored and the electrical constraints on the circuit, an optimum circuit layout was suggested for maximum thermal performance.
This project provides a foundation for the thermal management of power electronics at the system level. The use of I-deas as a computational modeling tool was explored, and comparison of the code with experimental measurements helped to explore the accuracy of I-deas as a system level thermal modeling tool.Master of Science