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Roučka, Václav. "Šíření spinových vln ve strukturách s lokálně modifikovanou magnetickou anizotropií." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443766.
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Zařízení založená na spinových vlnách mají potenciál být využita ve výpočetní technice s nízkou spotřebou energie. Pro úspěšné využití je samozřejmě potřeba spojit více takových zařízení na jednom čipu, součástí čehož musí být zatáčení spinových vln zahnutými vlnovody. Problém zatáčení spinových vln v dipolárně výměnném režimu zatím nebyl uspokojivě vyřešen, vyzkoušené přístupy vedly ke ztrátě intenzity a fázové koherence. V této diplomové práci jsme zkoumali dva systémy, které by mohly být využity k zatáčení spinových vln. Prvním z nich jsou tenké metastabilní vrstvy slitiny železa a niklu. Paramagnetická metastabilní fcc vrstva, která byla epitaxně narostena na substrátu z mědi, může být transformována do stabilní ferromagnetické bcc fáze pomocí fokusovaného iontového svazku. Tato technika nám dává prostorovou kontrolu nad transformačním procesem a strategie skenování svazkem nám dokonce umožňuje určit směr mangetické anisotropie. Magnetické vlastnosti struktur vytvořených touto metodou a lom spinových vln mezi doménami s odlišným směrem magnetické anisotropie byly změřeny pomocí mikroskopie Brillouinova rozptylu světla. Druhým zkoumaným systémem jsou zvlněné vlnovody, jejichž zvlnění indukuje magnetickou anisotropii. Zvlnění magnetické vrstvy je vytvořeno depozicí nemagnetických vlnek na substrátu indukovanou fokusovaným elektronovým svazkem a následnou depozicí magnetického materiálu. Byly vyrobeny různé návrhy zatočených zvlněných vlnovodů a změřili jsme šíření spinových vln jejich zatáčkami pomocí mikroskopie Brillouinova rozptylu světla. Využili jsme také mikromagnetické simulace pro získání hlubšího porozumění zkoumané problematiky a pro hledání vhodných návrhů experimentů.
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Nešpor, Dušan. "Studie šíření elektromagnetické vlny v heterogenních strukturách." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218636.
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The sight of work is study form high frequency electromagnetic wave in inhomogeneous materials. The main are refractions and reflection on boundary of materials with different properties and form electromagnetic wave in periodic structure. The work contain analytic and numeric solution. The numeric solution was realized in program COMSOL.
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Vidal, D. Andrés. "Los fundamentos de la felicidad según Leibniz." Tesis, Universidad de Chile, 2010. http://repositorio.uchile.cl/handle/2250/108646.
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Aguilera, Retamal Gonzalo Luis. "Comunicación, significado y referencia: contra los dogmas quineanos." Tesis, Universidad de Chile, 2012. http://www.repositorio.uchile.cl/handle/2250/113145.
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Informe de Seminario para optar al grado de Licenciado en FilosofíaLa presente tesina realiza en su marco teórico una breve introducción a las ideas del Círculo de Viena sobre el significado, para a continuación presentar el ataque frontal a las bases del positivismo lógico llevado a cabo por Quine, cuyo original sistema filosófico involucra sostener tesis filosóficas de carácter abarcador, dejándolas en un sector indefinido entre lo semántico, lo epistemológico y lo metafísico. Por lo anterior, la estructura de la exposición del sistema quineano se hará desde “fuera” hacia “adentro”, es decir, yendo del ataque hacia Carnap y el Círculo, pasando por sus tesis del compromiso ontológico, el holismo semántico, la indeterminación de la traducción, la relatividad ontológica y la indeterminación de la referencia, para luego ir hacia las presuposiciones empíricas tácitas que hacen su sistema creíble, o sea, la reificación como punto de continuidad entre el lenguaje natural y la teoría científica, junto con su concepción de un significado estimulativo compatible con el conjunto de sus proposiciones filosóficas. Una vez en el interior del sistema se atacará la noción de “reificación quineana” que involucra que el mundo es concebido desde nuestra niñez como un conjunto no ordenado de experiencia siendo ordenado recién con la adquisición de un lenguaje cualquiera, cosa incompatible con lo que la investigación en psicología del desarrollo ha descubierto. Finalmente, considerando que lo que muestran los experimentos hechos en niños prelingüísticos es una prueba suficiente de la falta de plausibilidad del edificio quineano, entonces se intentará hacer una reconstrucción sobre las soluciones que se han formulado históricamente a los problemas del “significado”, la “referencia” y la “comunicación”, lo que implicará inmediatamente una propuesta sobre las nociones conceptuales que debe contener una teoría más completa cuyo objeto sean los lenguajes naturales.
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Galicia, Pérez Mónica Alexandra, Dongo Jessica Abigail Huerta, and Palo Denis Danilo Hualla. "Aplicación de los estándares globales del PMI para la dirección del Proyecto de mejoramiento y ampliación de la disposición final de los residuos sólidos urbanos de la ciudad del Cusco." Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626715.
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Hoy en día uno de los principales problemas en nuestra sociedad, es el inadecuado tratamiento que se brinda a los residuos que se generan diariamente en hogares, actividades comerciales, e industriales.
La Municipalidad Provincial del Cusco ha decidido la ejecución de un proyecto de “Mejoramiento y ampliación de la disposición final de los residuos sólidos urbanos de la ciudad del Cusco en la localidad de Jaquira”. Siendo la entidad ejecutora ha decidido la aplicación de los estándares globales del PMI a la dirección del proyecto.
Los principales Entregables del Proyecto:
Entregable 1.-Obras Provisionales, Entregable 2.-Trabajos Preliminares, Entregable 3.- Obras especificas, Entregable 4.-Pozas para lixiviados, Entregable 5.-Trabajos complementarios, Entregable 6.-Dirección de proyectos, Entregable 7.-Permisos.
El proyecto presenta un valor actual neto (VAN) de S/ 3,201,385.48 Nuevos soles, con el cual podemos confirmar que el proyecto ira bien. La tasa interna de Retorno (TIR), representa la rentabilidad media intrínseca del proyecto. Podemos apreciar que tenemos 2 tasas internas de retorno con Flujo de Caja Neta Descontada con 24% y con Flujo de Caja Neta 42.96% lo cual nos brinda valores de éxito para el proyecto y poder continuar con esta decisión.
Podemos concluir que nuestros 3 indicadores se encuentran en estados positivos para poder continuar con el proyecto y esperar resultados positivos a futuro.Nowadays one of the main problems in our society, is the inadequate treatment that is given to the waste that is generated daily in homes, commercial activities, and industrial. The Provincial Municipality of Cusco has decided on the execution of a project “Improvement and extension of the final disposal of urban solid waste in the city of Cusco in the town of Jaquira”. Being the executing agency has decided to apply the global standards of the PMI to the project management. The main Deliverables of the Project: Deliverable 1.- Provisional Works, Deliverable 2.- Preliminary Works, Deliverable 3.- Specific works, Deliverable 4.- Leachate pools, Deliverable 5.- Complementary works, Deliverable 6.- Project Management, Deliverable 7.- Permits. The project has a net present value (NPV) of S / 3,201,385.48 Nuevos soles, with which we can confirm that the project will go well. The internal rate of Return (IRR) represents the intrinsic average profitability of the project. We can appreciate that we have 2 internal rates of return with Discounted Net Cash Flow with 24% and with 42.96% Net Cash Flow which gives us success values for the project and to continue with this decision. We can conclude that our 3 indicators are in positive states in order to continue with the project and expect positive results in the future.
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Ruddat, Helge P. "Partielle Auflösung eines torischen log-Calabi-Yau-Raumes." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:25-opus-61622.
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Rouvellac, Éric. "Les terroirs de l'aire A. O. C. Cahors, étude géographique." Toulouse 2, 1998. http://www.theses.fr/1998TOU20087.
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Entre cahors et soturac, le vignoble d'appellation d'origine controlee cahors se situe dans la moyenne vallee du lot, a terrasses etagees siliceuses, et sur ses versants et plateaux bordiers partages entre les calcaires des eres secondaires et tertiaires. Pour etudier et cartographier les terroirs des 45 communes qui englobent l'aire (a la demande des instances viticoles locales et nationales), nous avons defini une grille de douze criteres de differenciation des terroirs qui nous a permis de les decrire et de les cartographier au 1/25 000. Cette approche epistemologique et appliquee nous a amene a prolonger notre recherche suivant trois axes : - une etude affinee des terroirs par fosses et sondages, qui a conduit a un approfondissement a l'aide d'analyses pedologiques et montre la differenciation des terroirs par leur sol, - une etude des topoclimats de l'aire, par l'examen des temperatures quotidiennes en fonction des terroirs, par l'elaboration d'un modele numerique de terrain (mnt) permettant l'examen des ombres portees en fonction de la pente et de l'exposition, - une etude des rapports entre terroirs et qualites des vins sur cinq annees, par degustations et analyses chimiques de microvinifications, qui montre une hierarchie entre les terroirs. Ces prolongements ont confirme notre cartographie, l'individualite de chaque terroir, ce que nous avons appele le fait terroir. Enfin, un des aboutissements de nos recherches a consiste en l'etude, a l'echelle de la parcelle, des possibilites de reconnaissance d'une appellation +premier cru cahors ;, qui peut donner un nouvel elan a l'appellation cahors. Ce volet de recherche a permis de construire une base de donnees qui peut etre a l'origine d'un systeme d'information geographique. Mots cles : vignoble, appellation d'origine controlee cahors, terrasses alluviales, plateaux calcaires, criteres de differenciation, cartographie, recherche appliquee, terroirs, fait terroir, qualite des vins, analyses de sol, pedologie, topoclimats, ombres portees, modele numerique de terrain, microvinifications, cruBetween cahors and soturac, the vineyard of cahors - a guaranteed vintage- is situated in the mid-lot valley, which has silicious terraced rows on its hillsides, and on its bordering plateaux, composed of limestone of the secondary or tertiary geological eras. In order to study and do a cartography of the + terroirs ; in the 45 rural districts which include the area concerned (a project commissioned by the local and national authorithies), we defined a scale comprising twelves criteries for differenciating the +terroirs ;; this enabled us to describe and do a cartography of them on a scale of 1/25 000. This epistemological and applied approach led us to extend our research by following three main lines: - an extensive study of the +terroirs ; by taking soil samples, which was consequently furthered by soil analyses and they showed the differenciation between the various +terroirs; according to their soil; - a study of the area's topoclimates, by examining the daily temperatures according to each + terroir ;, and by elaborating a numerical model of ground which enabled us to examine the shadows cast according to the slopes or the exposure; - a study of the links between each + terroirs ; and the qualities of the wine over five years, either by tasting them or making chemical analyses of the microvinifications, which showed that there is a hierarchy between the + terroirs ;. Those extensions of our study confirmed both the cartography we had made, and the individual character of each + terroir ;, which we called the + fait terroir ;. Finally, one of the outcomes of our research consisted in studying the possibility to award an appellation + first-class cahors vintage ; on the scale of the patch, which would boost the cahors appellation. This section of our research enabled us to compile a database which could lead to the creation of a geographical information system
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Achterhuis, Hans. "Lof en troost van de filosofie." Enschede : University of Twente [Host], 2007. http://doc.utwente.nl/58043.
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Cardenas, Jorge Enrique Samanes. "Propagação guiada de ondas de VLF: aplicação ao estudo de fenômenos atmosféricos e naturais." Universidade Presbiteriana Mackenzie, 2012. http://tede.mackenzie.br/jspui/handle/tede/1418.
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Previous issue date: 2012-02-17Fundo Mackenzie de Pesquisa
Deep amplitude minima are observed in the daily records of Very Low Frequency (VLF, between 3 - 30 kHz) wave amplitudes. Amplitude minima are attributed to modal interference and modal conversion of waves propagating in the Earth - Ionosphere waveguide. The time of amplitude minima is related with the localization of the Terminator line and, therefore, is denominated of Terminator Time or TT time. In this work, we developed a methodology based on the monitoring of TT time to infer the distance of modal interference D and its temporal variation in relation to atmospheric and natural phenomena. For this purpose, we used data provided by the South America VLF Network (SAVNET) to the period 2007 - 2011. The results showed that the methodology is a promising tool to study the dynamics of the lower ionosphere, by means of the daily values of the undisturbed nighttime ionospheric height(hN). We identified short-term and long-term time variations of hN, where the long-term variation is possibly related with the solar activity cycle. We propose the use of this method to search for seismic- electromagnetic effects, and that it should be applied to medium and short propagation paths. Using the Long Wave Propagation Capability (LWPC) code, we simulated TT times and the results show good agreement with the observations, so a value for nighttime height hN = 88 km is suggested. This work will contribute to a greater viability of the use of the VLF technique for the study of the lower ionosphere and the forcings acting on this region of the atmosphere.
Pronunciados mínimos de amplitude são observados nos registros diários de sinais de muito baixa frequência ou VLF (do inglês Very Low Frequency, entre 3 - 30 kHz). A presença destes mínimos é atribuída a interferência e conversão modal de ondas se propagando no guia de onda Terra - Ionosfera. Os tempos de ocorrência destes mínimos são relacionados com a localização do Terminadouro e, por isso, são denominados de tempos de Terminadouro ou Tempos TT. Neste trabalho, desenvolvemos uma metodologia baseada no monitoramento dos tempos TT para inferir a distância de interferência modal D, e sua variabilidade temporal em relação a fenômenos atmosféricos e naturais. Para isso, utilizamos dados fornecidos pela rede SAVNET (South America VLF Network) durante o período 2007 - 2011. Os resultados mostraram que a metodologia é relevante para estudar a dinâmica da baixa ionosfera, através da obtenção de valores diários da altura noturna hN. Identificamos variabilidades de curto e longo período para hN, sendo estas últimas relacionadas ao ciclo de atividade solar. O método deverá ser aplicado à procura de efeitos sismo-eletromagnéticos utilizando caminhos com comprimento médios ou curtos. Foram realizadas simulações dos tempos TT, utilizando o código Long Wave Propagation Capability (LWPC), que mostraram boa concordância com as observações, sugerindo um valor de hN = 88 km para a altura noturna da baixa ionosfera. Os resultados apresentados neste trabalho contribuem para uma maior viabilização do uso da técnica de VLF, para o estudo da baixa ionosfera e os forçantes que agem sobre esta região da atmosfera terrestre.
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McCormick, Jackson C. "Spatial and temporal ionospheric monitoring using broadband sferic measurements." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54469.
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The objective of this thesis is to use radio emissions from lightning, known as `radio atmospherics' or `sferics', to study the temporal and spatial variation of the lower ionosphere, a layer of ionized atmosphere beginning at $\sim$70 km altitude (D-region). Very Low Frequency (VLF, 3$-$30kHz) radio waves are a useful diagnostic for lower ionospheric monitoring due to their reflection from this region and global propagation. Traditionally, the lower ionosphere has been sensed using single-frequency VLF transmitters allowing for analysis of a single propagation path, as there are only a small number of transmitters.
A lightning stroke, however, releases an intense amount of impulsive broadband VLF radio energy in the form of a sferic, which propagates through the Earth-ionosphere waveguide. Lightning is globally distributed and very frequent, so a sferic is therefore also a useful diagnostic of the D-region. This is true both for ambient or quiet conditions, and for ionospheric perturbations such as solar flare x-ray bursts. Lightning strokes effectively act as separate VLF transmitting sources. As such, they uniquely provide the ability to add a spatial component to ionospheric remote sensing, in addition to their broadband signature which cannot be achieved with man-made transmitters.
We describe the methods of processing in detail. As an example, we analyze a solar flare during which time there is a significant change in magnitude and frequency content of sferics. This disturbance varies with distance from the source, as well as time. We describe the methods of processing in detail, and show results at Palmer Station, Antarctica for both a quiet and active solar day.
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Haworth, Christopher. "The de Haas-van Alphen effect and the superconducting state." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294551.
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Uribe, Riveros Natalia. "Schelling y el sistema de los tiempos: de la totalidad al individuo." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/143778.
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Tesis para optar al grado de Magíster en FilosofíaLa presente tesis mostrará las implicaciones ontológicas que la concepción del tiempo formulada en la filosofía de la libertad de Friedrich Schelling trae en relación a la consideración del hombre y su relación con la totalidad. La propuesta se defenderá que la perspectiva expuesta en Las edades del mundo acerca de un sistema temporal funciona como un entramado que se manifiesta en distintos niveles, siendo la linealidad del tiempo solo una forma humana y limitada de comprensión. Para ello, el estudio contemplará dos perspectivas. En un primer momento se estudiará y analizará la obra mencionada para entender a cabalidad sus postulados y determinar la importancia del concepto de tiempo allí expuesta. En una segunda parte se analizarán las consecuencias ontológicas que el entendimiento lineal del tiempo trae al hombre como el único de los seres que vive en la indeterminación y en el deseo de manifestarse como una voluntad propia, ajena al sistema universal.
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Piskorski, Julia Hege. "Cooling, Collisions and non-Sticking of Polyatomic Molecules in a Cryogenic Buffer Gas Cell." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13070052.
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We cool and study trans-Stilbene, Nile Red and Benzonitrile in a cryogenic (7K) cell filled with low density helium buffer gas. No molecule-helium cluster formation is observed, indicating limited atom-molecule sticking in this system. We place an upper limit of 5% on the population of clustered He-trans-Stilbene, consistent with a measured He-molecule collisional residence time of less than \(1 \mu s\). With several low energy torsional modes, trans-Stilbene is less rigid than any molecule previously buffer gas cooled into the Kelvin regime. We report cooling and gas phase visible spectroscopy of Nile Red, a much larger molecule. Our data suggest that buffer gas cooling will be feasible for a variety of small biological molecules. The same cell is also ideal for studying collisional relaxation cross sections. Measurements of Benzonitrile vibrational state decay results in determination of the vibrational relaxation cross sections of \(\sigma_{22} = 8x10^{-15} cm^2\) and \(\sigma_{21} = 6x10^{-15} cm^2\) for the 22 (v=1) and 21 (v=1) states. For the first time, we directly observe formation of cold molecular dimers in a cryogenic buffer gas cell and determine the dimer formation cross section to be \(\sim10^{-13} cm^2\).Physics
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Gahlinger, Chantal. "Der Weg zur weiblichen Autonomie : zur Psychologie der Selbstwerdung im literarischen Werk von Lou Andreas-Salomé /." Bern : P. Lang, 2001. http://catalogue.bnf.fr/ark:/12148/cb38940517z.
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Yeomans, Vera. "Einfluss von Antioxidantien auf die Oxidation von Low-density-Lipoproteinen (LDL)." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964386216.
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Gummelt, Volker. "Lex et Evangelium : Untersuchungen zur Jesajavorlesung von Johannes Bugenhagen /." Berlin : W. de Gruyter, 1994. http://catalogue.bnf.fr/ark:/12148/cb35702174k.
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Akel, Junior Alberto Fares. "Modelagem de propagação subionosférica de ondas de frequência muito baixa." Universidade Presbiteriana Mackenzie, 2015. http://tede.mackenzie.br/jspui/handle/tede/1529.
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Previous issue date: 2015-08-21Fundação de Amparo a Pesquisa do Estado de São Paulo
We study the behavior of the Earth-ionosphere waveguide through the modeling of the propagation of very low frequency radio waves (VLF). We use the computational model LWPC (Long Wave Propagation Capability) to estimate changes in amplitude and phase of the VLF signals detected by the SAVNET network (South America VLF NETwork), and thus try to understand the behavior of the lower ionosphere under different ionization conditions. The research was divided into two parts. The first part investigates the behavior of the VLF signals in quiescent regimes of ionization. Amplitude and phase simulations for the were carried out, modifying adapting polynomials for the β and h parameters (or Wait s parameters) as a function of the zenithal angle. The second part of this research, uses these polynomials in the study of the lower ionosphere under transient ionization regimes in two distinct conditions: first during of solar flares and second during solar eclipse. For the simulations under solar flare conditions, we calculate the changes in β and ℎ′ parameters during the 25/03/2008 solar explosion. With these values, we calculate the electronic density profile through an exponential model and we find that the electronic density at 75 km is ∼ 104 cm−3, that is twenty times higher than during quiescent conditions. To evaluate our parameter estimates, we calculate the variation of the Wait s parameters for the case of twelve solar events of different classes. We note that the variations Δℎ′ found in this work are larger than that in Muraoka, Murata e Sato (1977) because they consider the variations in the conductivity gradient. For the solar eclipse simulations on 11/07/2011, we investigate its effect on the VLF phase. For this, we use the obscuration coefficient to estimate the guide height variation along the whole path during the eclipse. The simulations reproduce the phase behavior during the eclipse. However, a delay of about twenty four minutes was observed between the simulated and observed measurements. The observed delay is a direct consequence of own estimates of the perturbed ionospheric height and it causal relation with the obscuration during the eclipse. lower ionosphere, VLF, modeling, ionospheric disturbances, solar flares, solar eclipse.
Neste trabalho realizamos o estudo do comportamento do guia de ondas terra-ionosfera através da modelagem da propagação ondas de rádio de frequência muito baixa (VLF). Para isto, utilizamos o modelo computacional LWPC (Long Wave Propagation Capability) para estimar as variações de amplitude e fase de sinais de VLF detectados nos trajetos da rede SAVNET (South America VLF NETwork) e assim compreender o comportamento da baixa ionosfera em diferentes regimes de ionização. A pesquisa foi dividida em duas partes. A primeira parte, investigou o comportamento do sinal VLF em regimes quiescente de ionização, assim realizou-se simulações de amplitude e fase adaptando polinômios que definem os parâmetros β e ℎ′ (ou parâmetros de Wait) em função do ângulo zenital solar. Na segunda parte desta pesquisa, aplicou-se os polinômios no estudo da baixa ionosfera sob regimes transientes de ionização em duas condições distintas. A primeira para o caso de explosões solares e a segunda um para eclipse solar. Nas simulações relativas a explosões solares, calculamos as variações dos parâmetros β e ℎ′ durante o evento do dia 25/03/2008. Com esses valores, calculamos o perfil de densidade eletrônica, através de um modelo exponencial e observamos que a densidade eletrônica em 75 km é ∼ 104 cm−3, ou seja, vinte vezes maiores que antes da explosão. Para avaliar nossas estimativas, calculamos a variação dos parâmetros de Wait para doze eventos de diferentes classes. Observamos que as variações Δℎ′ neste trabalho são sempre maiores do que as descritas em Muraoka, Murata e Sato (1977), devido elas considerarem as variações no gradiente de condutividade. Nas simulações relativa ao eclipse solar do dia 11/07/2011, investigamos seu efeito na fase observada. Para esse estudo, utilizou-se o coeficiente de obscurecimento para realizar as simulações, desta forma foi possível estimar a variação da altura do guia ao longo de todo o trajeto durante o eclipse. As simulações reproduziram o comportamento da fase durante o eclipse. Entretanto, foi observado um atraso entre as medidas calculadas e observadas de aproximadamente ∼ vinte e quatro minutos. O atraso observado é diretamente decorrente da estimativa da altura de referência da ionosfera pertubada e de sua relação causal com o obscurecimento durante o eclipse.
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Brehm, Christian. "Der Einfluß von leistungsunabhängigem Lob auf Arbeitsprozeß und Problemlöseleistung eine experimentelle Untersuchung /." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10444868.
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Aulmann, Maria. "Entwicklung und Evaluierung von Clinical Skills - Simulatoren für die Lehre in der Tiermedizin." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-215224.
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Einleitung Studierende der Veterinärmedizin müssen neben umfangreichem theoretischem Wissen zahlreiche praktische Fertigkeiten erlernen. Da jeder Einzelne in seinem eigenen Tempo lernt, besteht ein großer Bedarf an Trainingsmöglichkeiten. Kadaver und lebende Tiere sind selten in ausreichender Menge verfügbar und lebende Tiere sind zudem aus Gründen des Tierwohls nur eingeschränkt zu verwenden. Simulationsmodelle (Modelle von Organismen / Körperteilen) können hier Abhilfe schaffen. Kommerziell erhältliche Modelle sind sehr kostenintensiv und für die Tiermedizin noch nicht flächendeckend erhältlich. Zunehmend werden selbst entwickelte low-fidelity Modelle in der Tiermedizin verwendet. Aufgrund des Mangels an publizierten Daten zu ihrem Einsatz besteht intensiver Forschungsbedarf. Ziele der Untersuchungen In dieser Arbeit sollte untersucht werden, ob einfache, selbst entwickelte Simulationsmodelle (low-fidelity Modelle) erfolgreich in der Lehre eingesetzt werden können. Dazu wurden zwei selbst entwickelte und gebaute Simulationsmodelle evaluiert (Studie 1) und ihr Einsatz in Kombination mit anderen Lehrmedien untersucht (Studie 2). Materialien und Methoden In Studie 1 wurden zwei low-fidelity Modelle zur kaninen Intubation und Katheterisierung entwickelt und evaluiert. Es wurde ein Studiendesign genutzt, das die erworbenen Fertigkeiten zweier Übungsgruppen und einer Kontrollgruppe in einer praktischen Prüfung (OSCE = objective structured clinical examination) am toten Hund vergleicht. Achtundfünfzig Studierende (4. FS) erhielten eine theoretische Einführung zur Intubation und wurden randomisiert auf drei Gruppen aufgeteilt. Gruppe 1 (high-fidelity) übte am kommerziell erhältlichen Intubation Training Manikin, Gruppe 2 (low-fidelity) am entwickelten low-fidelity Modell und die Textgruppe las einen Text, der die Intubation beim Hund beschreibt. Siebenundvierzig Studierende (10. FS) durchliefen dasselbe Studiendesign zum Thema Katheterisierung der Hündin. Sie nutzten das kommerziell erhältliche Female Urinary Catheter Training Manikin, das selbst entwickelte low-fidelity Modell und Lehrtexte. In Studie 2 wurde die Vermittlung zweier spezifischer Fertigkeiten mit Hilfe von Potcasts und Simulationstraining evaluiert. Zwei anleitende Potcasts zu Intubation und Katheterisierung und die oben beschriebenen Modelle wurden innerhalb eines crossover-Studiendesigns genutzt. In dieser Studie sind Potcasts audio-visuell aufbereitete Animationen mit Schritt für Schritt – Anleitungen und Informationen. Die erworbenen praktischen Fertigkeiten zweier Übungsgruppen, die sich in der Art der theoretischen Vorbereitung unterschieden, wurden in einer praktischen Prüfung (OSCE) am toten Hund verglichen. Ein Fragebogen erfasste das Feedback der Teilnehmer. Sechzig Studierende (2. FS) wurden randomisiert auf eine Potcast- und eine Textgruppe aufgeteilt. Die Potcastgruppe sah sich das anleitende Potcast an, die Textgruppe bereitete sich anhand eines Lehrtextes vor. Im Anschluss hatten beide Gruppen separate Übungseinheiten an den low-fidelity Modellen ohne Betreuung durch Lehrende. Ergebnisse In Studie 1 schnitten alle Übungsgruppen signifikant besser ab als die Textgruppen. Gruppe 1 (high-fidelity) und Gruppe 2 (low-fidelity) unterschieden sich weder bei der Intubation noch bei der Katheterisierung signifikant in ihren Leistungen. In Studie 2 schnitt die Potcastgruppe beim Thema Intubation signifikant besser ab als die Textgruppe, beim Thema Katheterisierung ergaben sich keine signifikanten Unterschiede. Insgesamt hatte das Simulationstraining den Studierenden Spaß gemacht, das Lernen ohne Betreuer wurde jedoch als Herausforderung empfunden. Schlussfolgerungen Es ist davon auszugehen, dass low-fidelity Modelle genauso geeignet für das Training klinischer Fertigkeiten sein können wie high-fidelity Modelle. Das Training klinischer Fertigkeiten mit Hilfe von Potcasts und low-fidelity Modellen sollte durch Betreuer ergänzt werden, anstatt als alleiniges Lehrmedium für Studierende des ersten Studienjahres Verwendung zu finden. Eigenständiges Lernen klinischer Fertigkeiten, angeleitet durch Potcasts bietet eine Möglichkeit für vertiefendes und wiederholendes Training höherer Semester. Der Einsatz von Simulationsmodellen in der veterinärmedizinischen Ausbildung wächst seit wenigen Jahren stetig. Diese Arbeit leistet einen zeitgerechten Beitrag bei der Evaluierung von SimulationstrainingIntroduction Students of veterinary medicine are expected to acquire various practical skills in addition to a wide range of theoretical knowledge. There is a strong demand for training opportunities, as every individual learns and acquires practical skills at individual pace. For reasons of animal welfare concerns and availability, live animals and cadavers cannot always be used for clinical skills training. Simulation models, which are models of organisms or body parts can be a considerable alternative for clinical skills training. Models that are commercially produced often have a high price and are not available for all skills. Self-made models are increasingly used in veterinary education. Because there is few published data regarding their use, more scientific research is required. Aims of the Investigation The objective of this study was to determine, if self-made low-fidelity models can be successfully used in veterinary medical education. For this purpose, two self-made low-fidelity models were evaluated (study 1) and their use in combination with other teaching tools was analyzed (study 2). Materials and Methods In study 1, two self-made low-fidelity models for simulation of canine intubation and canine female urinary catheterization were developed and evaluated. We used a study design that compares acquired skills of two intervention groups and one control group in a practical examination (OSCE = objective structured clinical examination). Fifty-eight second-year veterinary medicine students received a theoretical introduction to intubation and were randomly divided into three groups. Group 1 (high-fidelity) was then trained on a commercially available Intubation Training Manikin, group 2 (low-fidelity) was trained on our low-fidelity model, and the text group read a text describing intubation of the dog. Forty-seven fifth-year veterinary medicine students followed the same procedure for training urinary catheterization using the commercially available Female Urinary Catheter Training Manikin, our self-made model, and text. Outcomes were assessed in a practical examination on a cadaver using an OSCE checklist. In study 2 we evaluated the teaching of two specific clinical skills using potcasts and low-fidelity simulation training. Two instructional potcasts describing intubation and catheterization and both low-fidelity models described above were used. In our study, potcasts are audio-visual animations that provide the learner with step by step information and instruction on a clinical skill. We used a crossover study design and compared the acquired practical skills of two intervention groups after a different theoretical preparation. A survey captured the participants’ feedback. Sixty first year veterinary medicine students were randomly allocated to two groups, a potcast group and a text group. The potcast group watched a potcast while the text group read an instructional text for preparation. Then both groups had separate self-directed training sessions on low-fidelity models. Outcomes were assessed in practical examinations on a cadaver using an objective structured clinical examination (OSCE) checklist. Results In study 1 all intervention groups performed significantly better than the text groups. Group I (high-fidelity) and group II (low-fidelity) for both intubation and catheterization showed no significant differences. In study 2 the potcast group performed significantly better than the text group in study intubation but no significant differences were observed in study catheterization. Overall, participants enjoyed clinical skills training but experienced self-directed learning as challenging. Conclusion Low-fidelity models can be as effective as high-fidelity models for clinical skills training. Clinical skills training using potcasts and self-directed low-fidelity simulation training should be complemented by supervisor or peer instruction rather than used as exclusive tool for teaching first year veterinary students. We assume though, that self-directed learning instructed by our potcasts can be a valuable chance for deepening and repetitive training of higher semesters. The use of simulation models in veterinary education has been consistently increasing in the past few years. This study is an important, timely contribution to the evaluation of simulation based education
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Urbanz, Werner. "Gebet im Sirachbuch zur Terminologie von Klage und Lob in der griechischen Texttradition." Freiburg, Br. Basel Wien Barcelona Rom New York, NY Herder, 2008. http://d-nb.info/994166532/04.
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Korvas, Miroslav. "Výkonový zesilovač pro pásmo krátkých vln." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219156.
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The theme of my diploma thesis is a realization of the high frequency amplifier with possibility to change its class between class A, B and C with output low pass and band pass filters. The output power is supposed to be at about 10 W in frequency range 3,5 MHz to 14 MHz. The thesis contains theory of amplifier respectively transceiver and filters. In next parts I will design, simulate, realize and measure created amplifier and filters.
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Schlemmer, Martin. ""Los von Berlin" : die Rheinstaatbestrebungen nach dem Ersten Weltkrieg /." Köln [u.a.] : Böhlau, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2893900&prov=M&dok_var=1&dok_ext=htm.
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V, Gesamtverband der Deutschen Versicherungswirtschaft e. "„Lob und Tadel“ - Wirkungen von Dialog-Displays: Unfallforschung kommunal." Gesamtverband der Deutschen Versicherungswirtschaft e. V, 2009. https://publish.fid-move.qucosa.de/id/qucosa%3A74749.
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Etwa zwei Drittel aller Verkehrsunfälle mit Personenschaden ereignen sich innerhalb von Ortschaften. Dabei sind besonders schwächere Verkehrsteilnehmer gefährdet. Problematisch sind vor allem die ungenügende Aufmerksamkeit der Fahrzeugführer und unangepasste Geschwindigkeiten. Prinzip von Dialog-Displays Eine neue Möglichkeit, Fahrer auf eine Gefahrensituation hinzuweisen, stellt das Dialog-Display dar. Im Gegensatz zu konventionellen Geschwindigkeitsanzeigen bekommt der Fahrer eine bewertende Rückmeldung über seine gefahrene Geschwindigkeit. Hält der Fahrer die zugelassene Höchstgeschwindigkeit ein, bekommt er eine positive Rückmeldung in Form eines freundlichen „Danke“. Beim Überschreiten der zulässigen Höchstgeschwindigkeit erhalten die Fahrer eine negative Rückmeldung in Form eines ermahnenden „Langsam“. Durch die dynamische Darbietung der Rückmeldung in Abhängigkeit von der gefahrenen Geschwindigkeit erhöht sich die Aufmerksamkeit der Kraftfahrer. Die unmittelbare positive oder negative Rückmeldung soll die Konsequenzen des eigenen Geschwindigkeitsverhaltens bewusst machen. Des Weiteren ist das Lob bzw. der Tadel für alle anderen Verkehrsteilnehmer ebenfalls deutlich sichtbar und ermöglicht eine soziale Kontrolle der individuellen Geschwindigkeit. Die Wirkungen von Dialog-Displays Bislang war die Wirkung von Dialog-Displays umstritten. Deshalb untersuchte die UDV Dialog-Displays an vier Berliner Standorten, bei denen die zulässige Höchstgeschwindigkeit zur Verbesserung der Verkehrssicherheit durchgesetzt werden sollte. Die angeordneten Höchstgeschwindigkeiten gelten dort im Nahbereich von Kindertagesstätten, Schulen, einer Freizeiteinrichtung und eines Krankenhauses. An allen Standorten wurde mittels Seitenradar am Dialog- Display die Geschwindigkeit der Fahrzeuge kontinuierlich erfasst. Es erfolgten Messungen über einen Zeitraum von einem Monat vor Inbetriebnahme des Dialog-Displays, während der mehrmonatigen Betriebsphase und einen Monat nach Abbau des Dialog-Displays. Insgesamt wurden etwa 9,4 Millionen Geschwindigkeitsmesswerte erhoben. Im Ergebnis zeigten sich folgende Wirkungen: D ie Rückgänge der Durchschnittsgeschwindigkeit während der Betriebsphase der Dialog-Displays lagen zwischen 2 und 6 km/h auf Werte zwischen 30 und 35 km/h. E s kam zu einer Harmonisierung des Geschwindigkeitsniveaus. E s wurden 42 bis 64 % weniger Überschreitungen der Höchstgeschwindigkeit festgestellt.
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Lange, Annekathrin. "Der tragische Mann : zu Mannlichkeitskonzepten im Werk von Lou Andreas-Salomé /." View online version; access limited to Brown University users, 2005. http://wwwlib.umi.com/dissertations/fullcit/3174632.
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Mandrella, David. "La vie et l'oeuvre de Jacob Van Loo (1614-1670) : sa vie, son oeuvre." Paris 4, 2008. http://www.theses.fr/2008PA040134.
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Né à Sluis en Zélande, Jacob van Loo était dans les années 1640 et 1650 un artiste reconnu à Amsterdam. Il était célèbre pour ses « peintures de nus » dont plusieurs exemples sont conservés, notamment des Bacchanales. Il était également un portraitiste et peintre de genre de renom. Il est l’un des pionniers d’une nouvelle conception de la peinture d’intérieurs hollandaise. Après avoir commis un meurtre, il a du se réfugier à Paris où il entra dans l’Académie royale de Peinture et de Sculpture en 1663 et continua une carrière honorable dans le domaine du portrait historié. Ce travail retrace la vie de l’artiste à travers des documents d’archives. Ensuite son oeuvre est commenté selon ses différents genres et sa Fortune Critique établie. Un chapitre spécial traite des peintres hollandais en France au XVIIe siècle. Le travail est accompagné d’un catalogue raisonné de son oeuvre, des peintures acceptées, rejetées ou uniquement mentionnéesThe artist was born in provincial Sluis, in Zeeland. In the period from 1640 to 1650, he was a well-known painter in Amsterdam and, in 1652, became a citizen of that town. He was famous for his nudes, including, for instance, his Bacchanals, but was also a prolific portraitist. In 1650, he invented a new kind of Dutch genre painting, depicting rich individuals in an interior setting. After committing a homicide in 1660, he was forced to flee Amsterdam; he settled in Paris, becoming, in 1663, a member of the Royal Academy of Painting and Sculpture. The present work retraces his life using unpublished archival material and discusses his painterly style and critical reception. Moreover, the study also situates van Loo particularly with regards to other Dutch artists living and working in seventeenth-century France. Finally, this work introduces the first catalogue raisonné ever to be established of van Loo’s oeuvre (including a list of doubtful and/or rejected attributions as well as works only known through art-historical literature or sales catalogues)
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Wilda, Christian Friedrich. "Die Entwicklung von Jungpflanzen von Italienisch-Raigras (<> Lam.) in intensiv bewirtschafteten Grasbeständen /." [S.l.] : [s.n.], 1992. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=9726.
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Kadlec, Radim. "Analýza elektromagnetické vlny na rozhraní heterogenního prostředí." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233658.
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The proposed dissertation thesis contains an analysis of conditions on the boundary between layers having varied electromagnetic properties. The research is performed using consistent theoretical derivation of analytical formulas, and the underlying problem is considered also in view of multiple boundaries including the effect of the propagation of electromagnetic waves having different instantaneous speed. The author presents a survey and formulation of the basic characteristics of methods used for electromagnetic wave propagation analysis; in this respect, special emphasis is placed on radial models. The processing of the topic involved the designing and verification (using a set of different, layered planar materials) of algorithms to analyze the electromagnetic field components. The algorithm was assembled to enable simple evaluation of all components of the electromagnetic field in relation to the speed of the wave propagation in a heterogeneous environment. The proposed algorithms are compared by means of different numerical methods for the modelling of electromagnetic waves on the boundary between materials; moreover, electromagnetic field components in common points of the model were also subject to comparison. When in conjunction with tools facilitating the analysis of material response to the source of a continuous signal, the algorithms constitute a supplementary instrument for the design of a layered material. Such design enables the realization of, for example, recoilless plane, recoilless transition between different types of environment, and filters for both optical and radio frequencies.
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Seeber, Tino. "Weblogs - die 5. Gewalt? : eine empirische Untersuchung zum emanzipatorischen Mediengebrauch von Weblogs /." Boizenburg : Hülsbusch, 2008. http://d-nb.info/987599089/04.
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Nou, Alexandre. "Quelques propriétés des algèbres de Von Neumann engendrées par des q-gaussiens." Besançon, 2004. http://www.theses.fr/2004BESA2066.
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Taupier, Chávez Omar. "Ojos que no ven." Canalé, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/113996.
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Herten-Koch, Rut. "Rechtsetzung und Rechtsbereinigung in Europa : Vorschläge für eine Verbesserung der Vorbereitung von Rechtsnormen der Europäischen Kommission /." Frankfurt am Main : P. Lang, 2003. http://catalogue.bnf.fr/ark:/12148/cb40044202h.
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Amenero, Vásquez Virgilio. "Implementación de una red privada virtual (VPN) bajo software libre para optimizar el manejo de información entre los locales de la Corporación Educativa Adeu, de la ciudad de Chiclayo." Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2012. http://tesis.usat.edu.pe/handle/usat/1619.
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Ésta investigación estuvo centrada en la optimización del acceso a la información entre los locales de la Corporación Educativa Adeu a través de la implementación de una VPN, la cual fue realizada en software libre. La investigación fue realizada en 3 etapas. Como parte de la primera etapa se realizó una entrevista al Jefe del Área de Sistemas, el cual manifestó que actualmente la información a la que accede el personal administrativo de los locales de dicha corporación no cuenta con un medio de comunicación directo para compartir sus datos, por el contrario, están divididos, por lo cual el manejo y el acceso a la información es tedioso, ya que se requiere de otros medios como dispositivos magnéticos y cuentas de correo públicas, que en la mayoría de los casos son canales de transferencia de información no seguros. En la segunda etapa, teniendo en cuenta las necesidades planteadas se propuso un bosquejo de la VPN, la cual posteriormente fue modificada y validada. Luego fue implementado en la herramienta de software denominada OpenVPN, realizándose las configuraciones apropiadas a los servidores y equipos necesarios para la realización de la implementación respectiva. Además se realizaron un conjunto de pruebas, a fin de que se asegure la conexión de la red y se descarten posibles vulnerabilidades de la red. Para el desarrollo de la VPN se hizo empleo de la “Metodología para la implementación de redes seguras”, desarrollada por la empresa argentina CYBSEC. Finalmente, la tercera etapa estuvo enfocada en la comparación de los resultados obtenidos en las etapas 1 y 2; y la demostración de las mejoras a la problemática de la corporación. Mediante la implementación de la VPN se logró proporcionar un canal que permite transferir los datos de manera óptima y eficaz; permitiendo así, la confidencialidad y seguridad en su transmisión, sin tener que incurrir en gastos excesivos en la contratación de canales privados.Tesis
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Sterzer, Viviane [Verfasser], and Matthias [Akademischer Betreuer] Kalder. "Retrospektive Analyse der Lösungsorientierten Maltherapie (LOM®) zur Behandlung von Patienten mit starken und langandauernden Belastungssituationen / Viviane Sterzer ; Betreuer: Matthias Kalder." Marburg : Philipps-Universität Marburg, 2018. http://d-nb.info/1159702519/34.
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Hartig, Michael. "Loi de van der Waals-London pour les systèmes d'atomes et de molécules relativistes." Thesis, Toulon, 2019. http://www.theses.fr/2019TOUL0009.
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On considère un système constitué de plusieurs atomes où les noyaux sont supposés fixes et ponctuels. Les particules interagissent via le potentiel de Coulomb et les électrons ont une énergie cinétique pseudo-relativiste donnée par (p2+m2)1/2-m. On démontre la loi de van der Waals-London qui dit que l'énergie d'interaction entre atomes neutres décroit comme |D|-6 où |D| est la distance entre atomes. Nous calculons rigoureusement tous les termes de l'énergie de liaison jusqu'à l'ordre |D|-9 avec un terme d'erreur en O(|D|-10). Comme étape intermédiaire, nous établissons la décroissance exponentielle des fonctions propres de l'opérateur de Schrödinger à plusieurs particules avec les symétries imposées par le principe de Pauli, et des estimations sur le terme d'erreur de localisation. Nous montrons de plus la loi de van der Waals-London pour l'opérateur de Dirac projeté connu sous le nom d'opérateur de Brown et Ravenhall. Dans ce dernier cas on obtient un terme d'erreur en O(|D|-7)We consider a multiatomic system where the nuclei are assumed to be point charges at fixed positions.Particles interact via Coulomb potential and electrons have relativistic kinetic energy given by (p2+m2)1/2-m.We prove the van der Waals-London law, which states that the interaction energy between neutral atoms decays as the sixth power of the distance |D| between the atoms. We rigorously compute all terms in the binding energy up to order |D|-9 with error term of order O(|D|-10). As intermediate steps we prove exponential decay of eigenfunctions of multiparticle Schrödinger operators with permutation symmetry imposed by the Pauli principle and new estimates of the localization error. In addition we prove the van der Waals-London law for the projected Dirac operator, known as the Brown-Ravenhall operator. In this case we do not calculate the coefficients explicitly and we obtain an error term of order O(|D|-7)
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Bueren, Truus van. "Tot lof van Haarlem : het beleid van de stad Haarlem ten aanzien van de kunstwerken uit de geconfisqueerde geestelijke instellingen : Truus van Bueren." Hilversum : Verloren, 1993. http://catalogue.bnf.fr/ark:/12148/cb38835764v.
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Burgos, Ramírez Enric Antoni. "Amenaces i impulsos de l'escepticisme modern en el cinema de canvi de segle. Una lectura en clau cavelliana del Projecte idiota de Lars von Trier." Doctoral thesis, Universitat Jaume I, 2017. http://hdl.handle.net/10803/406142.
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La present tesi doctoral investiga fins a quin punt els plantejaments de Stanley Cavell sobre el cinema poden preservar la seua vigència en l'actual context de digitalització. Així, avaluem les condicions sota les quals la concepció ontològica del mitjà cinematogràfic que manté l'autor resulta aplicable en el nou escenari. Per altra banda, mitjançant l'estudi de Los idiotas (Dogme#2. Idioterne, Lars von Trier, 1998), posem a prova el procediment cavellià de lectura de pel·lícules i el complementem amb l'anàlisi formal i l'atenció al procés de realització. En última instància, la nostra tesi es proposa defensar que el film Los idiotas i el projecte creatiu en què queda emmarcat suposen un intent modernista de reivindicació de la base física del cinema que pretén la recuperació (cinematogràfica) de l'escepticisme en temps digitals i que reclama l'atenció als aspectes formals del film en tant que via fonamental per a articular la seua resposta.The current doctoral thesis investigates to what extent Stanley Cavell's approach to cinema keeps its validity in the contemporary context of digitalization. In this sense, we evaluate the conditions under which the author's ontological conception of the medium happens to be applicable to the new stage. On the other hand, through the study of The Idiots (Dogme#2. Idioterne, Lars von Trier, 1998), we put Cavellian reading of films to the test and complement it with formal analysis and attention to the filmmaking process. Ultimately, our thesis tries to defend that The Idiots and the creative project in which it is framed constitute a modernist attempt to reclaim the cinema's physical basis which aspires to the recovery from (cinematographic) skepticism in the digital age and that calls for formal aspects of film as a key way to articulate its response.
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Vesterinen, Niklas. "Discrepancy of sequences and error estimates for the quasi-Monte Carlo method." Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78525.
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We present the notions of uniform distribution and discrepancy of sequences contained in the unit interval, as well as an important application of discrepancy in numerical integration by way of the quasi-Monte Carlo method. Some fundamental (and other interesting) results with regards to these notions are presented, along with some detalied and instructive examples and comparisons (some of which not often provided by the literature). We go on to analytical and numerical investigations of the asymptotic behaviour of the discrepancy (in particular for the van der Corput-sequence), and for the general error estimates of the quasi-Monte Carlo method. Using the discoveries from these investigations, we give a conditional proof of the van der Corput theorem. Furthermore, we illustrate that by using low discrepancy sequences (such as the vdC-sequence), a rather fast convergence rate of the quasi-Monte Carlo method may still be achieved, even for situations in which the famous theoretical result, the Koksma inequality, hasbeen rendered unusable.Vi presenterar begreppen likformig distribution och diskrepans hos talföljder på enhetsintervallet, såväl som en viktig tillämpning av diskrepans inom numerisk integration via kvasi-Monte Carlo metoden. Några fundamentala (och andra intressanta) resultat presenteras med avseende på dessa begrepp, tillsammans med några detaljerade och instruktiva exempel och jämförelser (varav några sällan presenterade i litteraturen). Vi går vidare med analytiska och numeriska undersökningar av det asymptotiska beteendet hos diskrepansen (särskilt för van der Corput-följden), såväl som för den allmänna feluppskattningen hos kvasi-Monte Carlo metoden. Utifrån upptäckterna från dessa undersökningar ger vi ett villkorligt bevis av van der Corput's sats, samt illustrerar att man genom att använda lågdiskrepanstalföljder (som van der Corput-följden) fortfarande kan uppnå tämligen snabb konvergenshastighet för kvasi-Monte Carlo metoden. Detta även för situationer där de kända teoretiska resultatet, Koksma's olikhet, är oandvändbart.
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Dou, Ziwei. "Investigation on high-mobility graphene hexagon boron nitride heterostructure nano-devices using low temperature scanning probe microscopy." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283618.
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This thesis presents several experiments, generally aiming at visualising the ballistic and topological transport on the high-mobility graphene/boron nitride heterostructure using the scanning gate microscope. For the first experiment, we use the scanning gate microscopy to map out the trajectories of ballistic carriers in high-mobility graphene encapsulated by hexagonal boron nitride and in a weak perpendicular magnetic field. We employ a magnetic focusing transport configuration to image carriers that emerge ballistically from an injector, follow a cyclotron path due to the Lorentz force from an applied magnetic field, and land on an adjacent collector probe. The local potential generated by the scanning tip in the vicinity of the carriers deflects their trajectories, modifying the proportion of carriers focused into the collector. By measuring the voltage at the collector while scanning the tip, we are able to obtain images with arcs that are consistent with the expected cyclotron motion. We also demonstrate that the tip can be used to redirect misaligned carriers back to the collector. For the second experiment, we investigate the graphene van der Waals structures formed by aligning monolayer graphene with insulating layers of hexagonal boron nitride which exhibit a moiré superlattice that is expected to break sublattice symmetry. However, despite an energy gap of several tens of millielectronvolts opening in the Dirac spectrum, electrical resistivity remains lower than expected at low temperature and varies between devices. While subgap states are likely to play a role in this behaviour, their precise nature is still unclear in the community. We therefore perform a scanning gate microscopy study of graphene moiré superlattice devices with comparable activation energy but with different charge disorder levels. In the device with higher charge impurity ($\sim$ 10$^-$ cm$^{-2}$) and lower resistivity ($\sim$ 10 k$\Omega$) at the Dirac point we observe scanning gate response along the graphene edges. Combined with simulations, our measurements suggest that enhanced edge doping is responsible for this effect. In addition, a device with low charge impurity ($\sim$ 10$^{9}$ cm$^{-2}$) and higher resistivity ($\sim$ 100 k$\Omega$) shows subgap states in the bulk. Our measurements provide alternative model to the prevailing theory in the literature in which the topological bandstructures of the graphene moiré superlattices entail an edge currents shunting the insulating bulk. In the third experiment, we continue our study in the graphene moir$\acute e$ superlattices with the newly reported non-local Hall signals at the main Dirac point. It has been associated with the non-zero valley Berry curvature due to the gap opening and the nonlocal signal has been interpreted as the signature of the topological valley Hall effects. However, the nature of such signal is still disputed in the community, due to the vanishing density of states near the Dirac point and the possible topological edge transport in the system. Various artificial contribution without a topological origin of the measurement scheme has also been suggested. In connection to the second experiment, we use the scanning gate microscope to image the non-local Hall resistance as well as the local resistance in the current path. By analysing the features in the two sets of images, we find evidence for topological Hall current in the bulk despite a large artificial components which cannot be distinguished in global transport measurement. In the last experiment, we show the development of a radio-frequency scanning impedance microscopy compatible with the existing scanning gate microscopy and the dilution refrigerator. We detailed the design and the implementation of the radio-frequency reflectometry and the specialised tip holder for the integration of the tip and the transmission lines. We demonstrate the capability of imaging local impedance of the sample by detecting the mechanical oscillation of the tip, the device topography, and the Landau levels in the quantum Hall regime at liquid helium temperature and milli-Kelvin temperature.
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Vu, Van Loi [Verfasser]. "Redox-sensing mechanisms under hypochlorite stress in Staphylococcus aureus / Van Loi Vu." Berlin : Freie Universität Berlin, 2018. http://d-nb.info/1159900639/34.
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Arnold, Klaus, Armin Raabe, and Gerd Tetzlaff. "Regionale Unterschiede im Auftreten von Eisablagerungen." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212389.
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Bei der Errichtung von Windenergieanlagen in Mittelgebirgsregionen ist darauf zu achten, daß an windexponierten Standorten die Gefahr einer Vereisung der Rotorblätter besteht. Es wurden klimatologische Daten im Bereich der Mittelgebirge ausgewertet und daraus eine Karte erarbeitet, in der die jährliche mittlere Häufigkeit der Tage mit Eisablagerungen dargestellt istWith the installation of wind turbines in low mountain areas the hazard of ice accretions on rotor blades at windy places must be considered. Interpreting climatological datas of the low mountain areas of S. E. Germany a map has been produced which shows the annual frequencies of days ice accretions on structures occurs
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Choque, Mariño Carlos. "Se van los peruanos ... los ḿas testarudos se quedan: la memoria y olvido de la chilenización en el pueblo de Socoroma." Doctoral thesis, Pontificia Universidad Católica del Perú, 2012. http://tesis.pucp.edu.pe/repositorio//handle/123456789/4692.
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“Se van los peruanos… los mas testarudos se quedan”: La memoria y olvido de la Chilenización en el pueblo de Socoroma”, es una tesis doctoral que nace a partir de una serie de interrogantes que emergieron a partir de las memorias de algunos socoromeños a finales del año 2007. Asimismo, en esta misma época después de buscar diversas alternativas académicas para los estudios doctorales y con la ayuda de mi esposa y su insistencia postule al Programa de Estudios Andinos de la Pontificia Universidad Católica del Perú.Tesis
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Kulpa, Cínthia Costa. "Sistemática para o desenvolvimento de diretrizes no design de interfaces gráficas em tablet PCs voltadas a usuários típicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/163912.
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A evolução das tecnologias móveis ampliou significativamente a possibilidade de inclusão digital das pessoas com deficiências em geral, permitindo a interação sem as barreiras de espaço e tempo. Dentre estas novas tecnologias está o tablet PC, considerado atualmente a tecnologia móvel mais implementada em instituições de ensino do mundo, devido à sua ampla capacidade de interatividade, flexibilidade, mobilidade, navegação pelos Ambientes Virtuais de Aprendizagem (AVAs), e acessibilidade de diferentes perfis de usuários. Entretanto, a maioria dos usuários com baixa visão (BV) tem encontrado dificuldades em navegar nos AVAs por meio desta tecnologia, tendo que fazer uso de Tecnologias Assistivas voltadas para os cegos. Muito embora as diretrizes utilizadas para a construção destas Interfaces Gráficas do Usuário (GUIs) baseiem-se nos preceitos do W3C e do Design Universal, este fato pode prejudicar sua condição, gerar frustração e, consequentemente, resultar na sua exclusão digital. Com isso, o objetivo desta pesquisa é melhorar as condições de usabilidade dos AVAs no tablet PC, através de uma sistemática estruturada que forneça diretrizes capazes de orientar os desenvolvedores a criarem GUIs pensando no usuário com BV. A metodologia utilizada baseou-se no AVA Moodle como cenário de uso para o estudo de caso, foi realizada em três etapas que incluíram especialistas web, assim como usuários com BV, levando ao desenvolvimento da sistemática. Como resultado final da sua validação, tem-se um Guia de Diretrizes voltado para a construção de GUIs acessíveis aos usuários com BV, no tablet PC. Conclui-se que esta sistemática possibilita ao desenvolvedor agrupar e conceber suas próprias recomendações, em forma de guia de diretrizes, capazes de orientá-lo no incremento de interfaces voltadas especificamente para um usuário típico definido, independente do cenário de uso estabelecido. Refletindo, desta forma, na garantia e qualidade de acesso deste usuário, e permitindo a melhoria do processo de implementação de projetos pelo desenvolvedor.The evolution of mobile technologies has significantly broadened the digital inclusion possibility for persons with general disabilities, by providing interaction with no space and time barrier constraints. Among these new technologies, the Tablet PCs are currently deemed the most widely implemented mobile technology in teaching institutions worldwide due to their wide capacity of interactivity, flexibility, mobility, browsing through Virtual Learning Environments (VLEs), and accessibility to different user profiles However, most Low Vision (LV) users have faced difficulties to browse through VLEs by means of this technology and must resort to Assistive Technologies aimed at blind persons. Although the guidelines employed for the construction of those Graphic User Interfaces (GUIs) are founded on the precepts of W3C and Universal Design, this fact may harm their condition, generate frustration and, consequently, result in their digital exclusion. This way, the objective of this research is to improve the VLE usability conditions on Tablet PCs through a structured systematic to provide guidelines capable of instructing developers to create GUIs with LV users in mind. The methodology employed is based on the VLE Moodle as the scenery used for the case study, was carried out in three stages and included Web experts as well as LV users, leading to the development of the systematic. As an end result of its validation, there is a Guidelines Guide aimed at the construction of GUIs that are accessible to LV users on Tablet PCs. It has been concluded that this systematic allows developers to group up and conceive their own recommendations in the form of a guidelines guide that are capable of instructing them in incrementing interfaces specifically aimed at a defined typical users regardless of the established scenery of use. This way, it would reflect as an access guarantee and quality for those users, and allow for improvements to the project implementation process by developers.
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Gruner, Sascha. "Bleifreie Lote: Struktur und Oberflächenspannung von Ag-Cu-Sn Legierungsschmelzen." Master's thesis, Universitätsbibliothek Chemnitz, 2004. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200401595.
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Aufgrund ökologischer Bedenken ist die Verwendung von bleihaltigen Werkstoffen in der Elektro- und Elektronikindustrie ab 2006 verboten. Ag-Cu-Sn Legierungen gelten dabei als möglicher Ersatz für das herkömmliche Lötzinn (Pb-Sn).
Ziel dieser Arbeit ist es, die Nahordnung in den Legierungsschmelzen mittels Röntgen- und Neutronendiffraktion zu untersuchen. Desweiteren wird die Oberflächenspannung im Legierungssystem gemessen und mit Modellrechnungen verglichen.
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Loo, Sebastian Josef van [Verfasser]. "Werbemittelbedingte Wirkungen der Werbeskepsis : theoretische Erklärung und empirische Untersuchung / Sebastian Josef van Loo." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1033851574/34.
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Nguyen, Hoang Lam [Verfasser]. "Prognosefaktoren der gesundheitsbezogenen Lebensqualität von Meningeompatienten nach einer operativen Therapie / Hoang Lam Nguyen." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2018. http://d-nb.info/115047744X/34.
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Krüger, Annette. "Das Lob des Schöpfers Studien zur Sprache, Motivik und Theologie von Psalm 104." Neukirchen-Vluyn Neukirchener Verl, 2008. http://d-nb.info/99465331X/04.
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Hermsen, Joke Johannetta. "Nomadisch narcisme : sekse, liefde en kunst in het werk van Lou Andres-Salomé, Belle van Zuylen en Ingeborg Bachmann /." Kampen : Kok Agora, 1993. http://catalogue.bnf.fr/ark:/12148/cb37692484p.
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Stuckrad, Anne Sae Lim von [Verfasser]. "Einfluss von Schutzimpfungen auf die Entwicklung einer allergischen Sensibilisierung und Atemwegsentzündung in einem Mausmodell / Anne Sae Lim von Stuckrad." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2013. http://d-nb.info/1042441154/34.
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Röllig, Mike. "Beiträge zur Bestimmung von mechanischen Kennwerten an produktkonformen Lotkontakten der Elektronik." Templin Detert, 2008. http://d-nb.info/989492575/04.
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Fenske, Uta. "Mannsbilder : eine geschlechterhistorische Betrachtung von Hollywoodfilmen 1946 - 1960 /." Bielefeld : Transcript, 2008. http://d-nb.info/986757047/04.
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