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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

The laser alignment system for the CMS silicon microstrip tracker

Wittmer, Bruno. Unknown Date (has links) (PDF)
Techn. Hochsch., Diss., 2002--Aachen.
42

Präzisionsmessungen an Myondriftkammern für den CMS-Detektor und die Bedeutung des Myonsystems für die Higgs-Suche am LHC

Hermann, Sven. Unknown Date (has links) (PDF)
Techn. Hochsch., Diss., 2004--Aachen.
43

Development and evaluation of a test system for the quality assurance during the mass production of silicon microstrip detector modules for the CMS experiment

Franke, Torsten. Unknown Date (has links) (PDF)
Techn. Hochsch., Diss., 2005--Aachen.
44

Elaboração e caracterização de almôndegas de tilápia do nilo (Oreochromis niloticus) e pirarucu (Arapaima gigas) cultivados: aplicação na merenda escolar. / Preparation and characterization of farm-grow nilo tilapia (Oreochromis niloticus) and pirarucu (Arapaima gigas) meatballs: their application for school meals

Lustosa Neto, Antonio Diogo January 2016 (has links)
LUSTOSA NETO, Antonio Diogo. Elaboração e caracterização de almôndegas de tilápia do nilo (Oreochromis niloticus) e pirarucu (Arapaima gigas) cultivados: aplicação na merenda escolar. 2016. 107 f. Tese (Doutorado em Engenharia de Pesca)-Universidade Federal do Ceará, Fortaleza, 2016. / Submitted by Anderson Silva Pereira (anderson.pereiraaa@gmail.com) on 2017-01-05T21:32:43Z No. of bitstreams: 1 2016_tese_adlustosaneto.pdf: 3561676 bytes, checksum: 16c66400598b2f71b92a48b42eb8a7e0 (MD5) / Approved for entry into archive by Jairo Viana (jairo@ufc.br) on 2017-01-11T17:03:00Z (GMT) No. of bitstreams: 1 2016_tese_adlustosaneto.pdf: 3561676 bytes, checksum: 16c66400598b2f71b92a48b42eb8a7e0 (MD5) / Made available in DSpace on 2017-01-11T17:03:00Z (GMT). No. of bitstreams: 1 2016_tese_adlustosaneto.pdf: 3561676 bytes, checksum: 16c66400598b2f71b92a48b42eb8a7e0 (MD5) Previous issue date: 2016 / The development of value-added fish products has generated a large number of research studies, especially with species from aquaculture, aimed at addressing the technological and nutritional aspects of fishery that might boost industrial development. This Doctorate Thesis seeks to develop and characterize the physiochemical, microbiological, nutritional and sensorial character of the meatballs made from mechanically deboned (MDM) meat of farm-grown Nile tilapia (Oreochromis niloticus) and pirarucu (Arapaima gigas), and their application in school meals. The specific goals were to prepare, calculate the yield, obtain the cost spreadsheets and ultimately carry out their characterization, by assessing their physical, chemical, microbiological, nutritional and sensory aspects. The choice of species used in this study was based on the industry’s demand and the Nile tilapia and pirarucu were collected from fish farms in two cities in the state of Ceará, both processed in the industry in a standard process. The characterization of fish meatballs and the MDM was determined by a physiochemical analysis (pH and water activity Aw), proximal composition (moisture, protein, lipids, ashes and carbohydrates) and the amino acid profile. The microbiological analyses were carried out for positive coagulase Stafilococos tests, coliforms at 45° C and Salmonella sp. For the meatballs were made the same microbiological analyzes considering a shelf life of 90 days. The sensory analysis conducted for the meatballs was accomplished through the application of global accessibility test, in accordance with the standards of PNAE(2010). The average yield of 34.5% for the Nile tilapia fillet and 26.7% for the MDM, in relation to the whole fish and 70.0% as compared to the headless carcass. The average yield for the pirarucu fillet was about 52.2% and 9.0% for MDM, as compared to the whole fish and 47.7% in relation to the headless carcass. The results of the cost spreadsheets for Nile tilapia fillet had values of BRL 36.14/kg (USD 11.06) and for the pirarucu fillet the values amounted to BRL 31.0/kg (USD 9.49), values that are not suitable for school meals. In the case of MDM for Nile tilapia meatball production, the value stood at BRL 8,16/kg (USD 2.50) and for pirarucu meatballs the value was BRL 10.4/kg (USD 3.18), values that are acceptable and viable for school meals products, as they rank below what is practiced in the school lunch market (BRL 15.00/kg) (USD 4.59). Both MDM presented higher protein contents (21% and 20%) and higher humidity (76% and 76.8%) as compared to fish meat balls of the same species, respectively (17% and 18% for protein) and (72% and 71% for moisture), which are quite acceptable values as well. On the other hand, the meatballs (Nile tilapia and pirarucu) showed higher levels of lipids (7% and 8.1%), carbohydrates (2.5% and 1.3%) and ashes (1.5% and 1.6%) than MDM, due to the use of inputs (salt, seasonings and binders). The amino acid profiles of the fish meatballs were similar, showing high nutritional value, due to their composition of essential amino acids. The microbiological analysis has shown that derivatives of the two species are within the sanitary standards required by the legislation in force, and that the shelf life test turned out to be satisfactory. Sensory analysis demonstrates that the school meals in the form of fish meatballs were widely accepted by most children, within the concepts of the hedonic scale: Like it (pirarucu 80%) and Love it (tilapia 65.5%). Based on the results obtained, one may conclude that the fish meatball prepared from MDM of Nile tilapia and pirarucu, strongly indicates that they are recommended for use in school meals, since the amount of essential amino acids found in this study surpassed recommended daily requirements of these amino acids by FAO / WHO, as they have all the desirable physiochemical, nutritional, microbiological and sensory attributes, besides stimulating the full utilization of fishery inputs in value-added products. / O desenvolvimento de produtos de valor agregado do pescado tem gerado muitas pesquisas, principalmente com espécies provenientes da aquicultura, com a finalidade de abordar aspectos tecnológicos e nutricionais do pescado que suscitam o desenvolvimento industrial. O objetivo geral desta pesquisa foi o de elaborar e caracterizar físico-química, microbiológica, nutricional e sensorialmente de almôndegas a partir de carne mecanicamente separada-CMS de tilápia do Nilo (Oreochromis niloticus) e pirarucu (Arapaima gigas) provenientes de cultivo, com aplicação na merenda escolar. Esse estudo visou especificamente a elaboração, no cálculo do rendimento e obtenção de planilhas de custos, a sua caracterização através da avaliação de seus aspectos físicos, químicos, microbiológicos, nutricionais e sensoriais. A escolha das espécies utilizadas recaiu sobre a demanda da indústria, tendo sido as tilápias do Nilo e os pirarucus coletadas de pisciculturas de dois municípios no Estado do Ceará. As amostras foram beneficiadas na indústria seguindo fluxograma padrão. A caracterização das almondegas de pescado e da CMS foram determinadas pelas análises físico-químicas (pH e Atividade de água - Aw), pela composição proximal (umidade, proteína, lipídeos, cinzas e carboidratos) e pelo perfil de aminoácidos. As análises microbiológicas foram realizadas para Estafilococos coagulase positiva, coliformes a 45 °C e Salmonella sp. Para as almôndegas foram realizadas as mesmas análises microbiológicas considerando uma vida de prateleira no período de 90 dias. A análise sensorial para as almondegas foi por meio da aplicação do teste de aceitabilidade global, segundo as normas do PNAE (2010). O rendimento médio de 34,5% para o filé da tilápia do Nilo e de 26,7% para a CMS, em relação ao peixe inteiro e 70,0% em relação ao dorso. O rendimento para o filé de pirarucu foi de cerca de 52,2% e da CMS 9,0%, em relação ao peixe inteiro e 47,7% em relação ao dorso. Os resultados das planilhas de custo de filé de tilápia do Nilo apresentaram valores de R$ 36,14/kg (USD $ 11.06) e para o filé de pirarucu os valores de R$ 31,0/kg (USD $ 9.49), valores que não se aplicam à merenda escolar. No caso da CMS para a produção almôndega de tilápia do Nilo o valor ficou em R$ 8,16/kg (USD $ 2.50) e a CMS para a produção almôndega de pirarucu o valor foi de R$ 10,4/kg (USD 3.18). Esses dois valores encontrados, são plenamente aceitáveis e viáveis para os produtos de merenda escolar, pois, estão abaixo do que é praticado no mercado de produtos institucionais (R$ 15,00/kg) (USD $ 4.59). As CMS apresentaram maiores teores proteico (21% e 20%) e maior umidade (76% e 76,8%) em comparação às almondegas de pescado das mesmas espécies respectivamente proteína (17% e 18%) e umidade (72% e 71%), que também são valores muito aceitáveis. Por outro lado, as almôndegas (tilápia do Nilo e pirarucu) apresentaram maiores teores de lipídios (7% e 8,1%), carboidratos (2,5% e 1,3%) e cinzas (1,5% e 1,6%) que a CMS, em virtude do uso de insumos (sal, temperos e ligantes). O perfil de aminoácidos das almôndegas de pescado foi semelhante entre as espécies estudadas, apresentando alto valor nutricional, pela sua composição de aminoácidos essenciais. As análises microbiológicas demonstraram que os produtos derivados das duas espécies estão dentro do padrão sanitário exigido pela legislação e que o teste de vida de prateleira foi satisfatório. A análise sensorial mostrou que as crianças aceitam a merenda escolar em forma de almôndegas de pescado nos conceitos conferidos da escala hedônica “gostei” (pirarucu 80,0 %) e “adorei” (tilápia 65,5%). Com base nos resultados obtidos, pode-se concluir que as almôndegas de pescado elaboradas a partir de CMS de tilápia do Nilo e pirarucu, têm um indicativo fortíssimo para utilização na merenda escolar, visto que a quantidade de aminoácidos essenciais encontrados nesse estudo superou as necessidades diárias desses aminoácidos recomendados pela FAO/WHO, além de apresentarem atributos físico-químicos, nutricionais, microbiológicos e sensoriais desejáveis servindo de estímulo para o aproveitamento integral de pescado em produtos de valor agregado.
45

Utvärdering av arbetsprocess och CMS

Pettersson, Douglas January 2017 (has links)
I dagens webb används ofta många olika innehållshanteringssystem för att göra det enkelt för användare att hantera deras egna hemsidor. I utvecklingsarbetet hos webbyråer bedrivs även någon typ av projektledning. Syftet med denna undersökning är att utvärdera och analysera ett företags befintliga CMS och deras arbetsprocess. Denna utvärderingen kommer göras utifrån ett visst antal kriterier som är kännetecken för olika projektledningsmetoder samt en separat utvärdering för ett passande CMS utifrån specifikationer och intervjuer. Här kommer faktorer som licens, funktionalitet, plattformsstöd, vidareutveckling, popularitet samt exempelvis programmeringsspråk. Denna undersökning visade på att företaget arbetar med ett agilt arbetssätt, samt att deras befintliga CMsystem är det optimala för deras verksamhet för att de ska upprätthålla sina möjligheter att helt skräddarsy lösningar och ha full kontroll på produkten.
46

400contacts

Olofsson, Robin January 2017 (has links)
Projektet avser att implementera spelifieringselement på den ideella bloggen 400contacts, en blogg som coachar och tipsar om jobbsökning i Sverige för nyanlända. Detta ska uppnås genom att använda sig av modeller av Yu-kai Chou, en framstående person inom området om spelifiering. Målet var till en början att öka antalet återkommande besökare till 50% av alla besökare men ändrades senare i projektet till att konvertera besökare till att ansluta sig till företagets facebookgrupp. För att lyckas uppnå detta har en ny design till bloggen tagits fram och under arbetets gång har ett poängsystem tagits fram som styr belöningar i form av märken på användarnas profiler. Dessa poäng ställer även användarna i en topplista. Poäng och märken förtjänas genom att vara delaktig på sidan, exempelvis genom att logga in eller att läsa ett nytt blogginlägg. Webbplatsen är byggd i WordPress och förlitar sig kraftigt på de tillgängliga tillägg som plattformen erbjuder. Arbetet har inte stött på större problem och har lyckats uppnå båda mål i sitt slutresultat.
47

Scalar boson decays to tau leptons: In the standard model and beyond

Caillol, Cécile 28 April 2016 (has links)
Cette thèse présente une étude du secteur scalaire dans le cadre du modèle standard (MS), ainsi que la recherche d'un secteur scalaire étendu dans des théories au-delà du MS. Ces analyses ont en commun la désintégration d'au moins un des bosons scalaires en une paire de leptons tau. Les résultats sont basés sur les données collectées par le détecteur CMS pendant le Run-1 du LHC, lors de collisions proton-proton à une énergie dans le centre de masse de 7 ou 8 TeV. Le boson découvert en 2012, H, semble compatible avec un boson de Brout-Englert-Higgs (BEH) du MS, mais ce constat se base essentiellement sur l'étude des modes de désintégration bosoniques. Le mode de désintégration H->tau tau est le canal fermionique le plus sensible, et permet de tester les couplages de Yukawa du nouveau boson. Cette thèse décrit dans un premier temps la recherche d'un boson scalaire se désintégrant en leptons tau et produit en association avec un boson vecteur. Les données du Run-1 ne sont pas sensibles aux petites sections efficaces de production prédites dans le SM, mais la combinaison avec les autres modes de production montre avec évidence l'existence de désintégrations du boson H en taus. De nombreux modèles au-delà du MS, tels que l'extension supersymétrique minimale du MS (MSSM) ou les modèles avec deux doublets scalaires (2HDM), prédisent l'existence de plusieurs boson scalaires. Quatre recherches d'un secteur scalaire étendu au-delà du MS sont présentées dans cette thèse. La première analyse recherche un pseudoscalaire avec une masse entre 220 et 350 GeV, se désintégrant en un boson scalaire similaire à celui du MS et en un boson Z, dans l'état final avec deux taus et deux leptons légers. La deuxième analyse explore la possibilité d'une désintégration exotique de la nouvelle particule en deux bosons scalaires plus légers dans l'état final avec deux muons et deux leptons tau. Dans le cadre de la troisième analyse, une région en masse quasiment inexplorée auparavant au LHC est testée par la recherche d'un pseudoscalaire avec une masse entre 25 et 80 GeV, se désintégrant en leptons tau et produit en association avec deux quarks b, dans le contexte des 2HDM. La dernière analyse recherche une résonance lourde se désintégrant en une paire de leptons tau dans le contexte du MSSM. Aucun indice de nouvelle physique n'a été trouvé dans les analyses décrites ci-dessus, mais des limites strictes sur les sections efficaces des différents signaux ont été déterminées. / This thesis presents a study of the scalar sector in the standard model (SM), as well as different searches for an extended scalar sector in theories beyond the standard model (BSM). All analyses have in common the fact that at least one scalar boson decays to a pair of tau leptons. The results exploit the data collected by the CMS detector during LHC Run-1, in proton-proton collisions with a center-of-mass energy of 7 or 8 TeV.The particle discovered in 2012, H, looks compatible with a SM Brout-Englert-Higgs boson, but this statement is driven by the bosonic decay modes. The H-> tau tau decay mode is the most sensitive fermionic decay channel, and allows to test the Yukawa couplings of the new particle. The search for the SM scalar boson decaying to tau leptons, and produced in association with a massive vector boson W or Z, is described in this thesis. Even though a good background rejection can be achieved by selecting the leptons originating from the vector boson, Run-1 data are not sensitive to the small production cross sections predicted in the SM for the scalar boson. The combination with the gluon-gluon fusion and vector boson fusion production searches leads to an evidence for the decay of the H boson to tau leptons.Many BSM models, such as the minimal supersymmetric SM (MSSM) or models with two scalar doublets (2HDM), predict the existence of several scalar bosons. The decays of these bosons to tau leptons can be enhanced in some scenarios depending on the model parameters, which makes the di-tau decay mode powerful to discover BSM physics. Four searches for an extended scalar sector are detailed in this thesis. The first analysis searches for a pseudoscalar boson with a mass between 220 and 350 GeV, decaying to an SM-like scalar boson and a Z boson, in the final state with two light leptons and two tau leptons. Second, a search for the exotic decay of the new particle H to a pair of light pseudoscalar bosons, which is still allowed by all measurements made up to now, in the final state with two muons and two tau leptons is performed. Third, a mass region almost never explored at the LHC is probed by the search of a light pseudoscalar, with a mass between 25 and 80 GeV, decaying to tau leptons and produced in association with b quarks. The last analysis describes the search for a heavy resonance in the MSSM, decaying to a pair of tau leptons. None of these analyses has found any hint of new physics beyond the SM, but stringent limits on the cross section of such signals could be set. / Doctorat en Sciences / info:eu-repo/semantics/nonPublished
48

Development of multivariate data visualisation software and searches for Lepton Jets at CMS

Radburn-Smith, Benjamin Charles January 2013 (has links)
Despite advances in multivariate visualisations and computer graphics, allowing for effective implementations, most particle physics analyses still rely on conventional data visualisations. The currently available software implementing these techniques has been found to be inadequate for use with the large volume of multivariate data produced from modern particle physics experiments. After a design and development period, a novel piece of software, DataViewer, was produced. DataViewer was used as part of a physics analysis at the CMS experiment, searching for an associated Higgs decaying through a dark sector into collimated groups of electrons, called Electron Jets. Observation of such a signature could explain astrophysical anomalies found by numerous telescopes. The full 2011 dataset, equivalent to an integrated luminosity of 4.83 fb^(-1) at a centre of mass energy of sqrt(s) = 7 TeV, recorded by the experiment was analysed. DataViewer was found to be extremely powerful in rapidly identifying interesting attributes of the signature which could then be exploited in the analysis. Additionally it could be used for cross checking other complex techniques, including multivariate classifiers. No evidence was found for the production of a Higgs boson in association with a Z boson, where the Higgs subsequently decays to Electron Jets. Upper limits on the production of benchmark models were set at the 95% Confidence Level.
49

The CMS forward calorimeter prototype design studies and omega(c)0 search at E781 experiment at FermiLab

Ayan, Ahmet Sedat 01 January 2004 (has links)
In the first part, the Compact Muon Solenoid (CMS) forward calorimeter design studies are presented. The forward calorimeter consists of quartz fibers embedded in a steel absorber. Radiation damage studies of the quartz fiber and the absorber as well as the results of the first pre-production prototype PPP-I are presented. In the second part the Ωc0 search studies at the SELEX (E781) experiment at FermiLab are presented. 107±22Ωc0 events were observed in three decay modes. The relative branching ratio Ωc0 → Ω−π−π+π+)/Β(Ωc0→ Ω−π+)$ is measured as 2.00 ± 0.45 (stat) ± 0.32 (sys).
50

Blogovací systém v ASP.NET / Content management system in ASP.NET

Rejko, Peter January 2010 (has links)
Aim of this thesis is the description of the Microsoft .NET Framework, its different versions, architecture, and its assembly, used for its simplistic architecture, and ease of use with the assembly it is the ideal environment for creating modular applications. The work describes the C# programming language and its versions. It includes a description of the different stages and evolution of the web application framework ASP.NET. It includes a short description of the ADO.NET and LINQ technologies, used to access data from databases. It describes different databases, they structure and classification. At the end there is a layout for a database structure, blogging system, aim and structure of the files, the different system parts and functions.

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