Дисертації з теми "2:1 model"
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Ru, Hua. "A 2 1/2 dimensional thermohaline circulation model with boundary mixing." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/58265.
Повний текст джерелаIncludes bibliographical references (leaves 78-82).
A simple quasi-two dimensional dynamical model of Thermohaline circulation (THC) is developed, assuming that the mixing only occurs near western and eastern boundary layers. When the surface density is prescribed, the climatically important quantities, such as the strength of overturning and meridional heat transport, are related to the zonal integral over the vigorously mixing regions and scaled as (KvΔx)2/3. The numerical results suggest that the density difference between eastern and western boundaries play an important role in the meridional overturning. The eastern boundary is characterized by the upwelling on top of downwelling. The western boundary layer is featured by the universal upwelling. The inefficiency of diffusion heat transport accounts for the narrowness of sinking region and shallowness of overturning cell in one-hemisphere. The experiments with other surface boundary conditions are also explored. The circulation patterns obtained are similar under various surface temperature distributions, suggesting these are very robust features of THC. The role of boundary mixing is further explored in global ocean. The 2 1/2 dynamical model is extended to two-hemisphere ocean. Additional dynamics such as Rayleigh friction and abyssal water properties are taken into account. A set of complicated governing equations are derived and numerically solved to obtain steady state solution. The basic circulation features are revealed in our dynamical model. An equtorially asymmetric meridional circulation is observed due to small perturbation at the surface temperature in the high latitude. The density differences between eastern and western boundaries are distinct in both hemispheres. This is achieved during the spin-up process. Although the dynamical model results agree well with OGCM results in one-hemisphere, several important dynamics are lacking and exposed in two-hemisphere experiments. We need to consider horizontal advection terms which will effectively advect positive density anomalies across the equator and form the deep water for the entire system.
by Hua Ru.
S.M.
Koktava, Rachel-Louise Kvertus. "Aspects of the gauged, twisted, SL(2|1)/SL(2|1) Wess-Zumino-Novikov-Witten model." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5291/.
Повний текст джерелаDavids, Stefan. "A state sum model for (2+1) Lorentzian quantum gravity." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391393.
Повний текст джерелаNie, Shuquan. "Phenomenology of the SU(2)(L) x SU(2)(I) x U(1)(Y) x U(1)(Y') model." W&M ScholarWorks, 2001. https://scholarworks.wm.edu/etd/1539623377.
Повний текст джерелаLozano, Dairon Andrés Jiménez. "Modelo de Heisenberg Antiferromagnético de spin-1/2 na rede triangular com interações competitivas." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-21092016-212043/.
Повний текст джерелаIn this thesis we study spin systems in low-dimensional lattices at zero temperature, analyzing their quantum phase transitions. More precisely, we study the properties of the ground state and the possible phase transitions in the antiferromagnetic spin-1/2 quan- tum Heisenberg model with interaction between the first and second neighbors, in several lattices, and in particular in the triangular lattice, which is the focus of our study. To obtain the approximate ground state, we use a variational method in which the lattice is partitioned into a set of plates of sites. The ground state is written as a tensor product of the states of plates. For the triangular lattice, we choose a triangle as a plate. Four phases were found: the antiferromagnetic Néel phase, the collinear, the modified Néel phase and that we call resonating valence bond. We obtained the energy and the magnetization as a function of the ratio of the interactions between the first and second neighbor sites. Between the Néel and collinear phases, we can observe the spin resonating valence bond phase, characterized as a singlet with respect to the spin of each plate.
CONTRERAS, ROXANA JIMENEZ. "TYPE-2 HIERARCHICAL NEURO-FUZZY BSP MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10862@1.
Повний текст джерелаEste trabalho tem por objetivo criar um novo sistema de inferência fuzzy intervalar do tipo 2 para tratamento de incertezas com aprendizado automático e que proporcione um intervalo de confiança para as suas saídas defuzzificadas através do cálculo dos conjuntos tipo-reduzidos correspondentes. Para viabilizar este objetivo, este novo modelo combina os paradigmas de modelagem dos sistemas de inferência fuzzy do tipo 2 e redes neurais com técnicas de particionamento recursivo BSP. Este modelo possui principalmente a capacidade de modelar e manipular a maioria dos tipos de incertezas existentes em situações reais, minimizando os efeitos destas para produzir um melhor desempenho. Além disso, tem a capacidade autônoma de criar e expandir automaticamente a sua própria estrutura, de reduzir a limitação quanto ao número de entradas e de extrair regras de conhecimento a partir de um conjunto de dados. Este novo modelo fornece um intervalo de confiança, que se constitui em uma informação importante para aplicações reais. Neste contexto, este modelo supera as limitações dos sistemas de inferência fuzzy do tipo 2 - complexidade computacional, reduzido número de entradas permissíveis e forma limitada, ou inexistente, de criarem a sua própria estrutura e regras - e dos sistemas de inferência fuzzy do tipo 1 - adaptação incompleta a incertezas e não fornecimento de um intervalo de confiança para a saída. Os sistemas de inferência fuzzy do tipo1 também apresentam limitações quanto ao reduzido número de entradas permissíveis, mas o uso de particionamentos recursivos, já explorado com excelentes resultados [SOUZ99], reduz significativamente estas limitações. O trabalho constitui-se fundamentalmente em quatro partes: um estudo sobre os diferentes sistemas de inferência fuzzy do tipo 2 existentes, análise dos sistemas neuro-fuzzy hierárquicos que usam conjuntos fuzzy do tipo 1, modelagem e implementação do novo modelo neuro-fuzzy hierárquico BSP do tipo 2 e estudo de casos. O novo modelo, denominado modelo neuro-fuzzy hierárquico BSP do tipo 2 (NFHB-T2), foi definido a partir do estudo das características desejáveis e das limitações dos sistemas de inferência fuzzy do tipo 2 e do tipo 1 e dos sistemas neuro-fuzzy hierárquicos que usam conjuntos fuzzy do tipo 1 existentes. Desta forma, o NFHB-T2 é modelado e implementado com os atributos de interpretabilidade e autonomia, a partir da concepção de sistemas de inferência fuzzy do tipo 2, de redes neurais e do particionamento recursivo BSP. O modelo desenvolvido é avaliado em diversas bases de dados benchmark e aplicações reais de previsão e aproximação de funções. São feitas comparações com outros modelos. Os resultados encontrados mostram que o modelo NFHB-T2 fornece, em previsão e aproximação de funções, resultados próximos e em vários casos superiores aos melhores resultados proporcionados pelos modelos utilizados para comparação. Em termos de tempo computacional, o seu desempenho também é muito bom. Em previsão e aproximação de funções, os intervalos de confiança obtidos para as saídas defuzzificadas mostram-se sempre coerentes e oferecem maior credibilidade na maioria dos casos quando comparados a intervalos de confiança obtidos por métodos tradicionais usando as saídas previstas pelos outros modelos e pelo próprio NFHB-T2 .
The objective of this thesis is to create a new type-2 fuzzy inference system for the treatment of uncertainties with automatic learning and that provides an interval of confidence for its defuzzified output through the calculation of corresponding type-reduced sets. In order to attain this objective, this new model combines the paradigms of the modelling of the type-2 fuzzy inference systems and neural networks with techniques of recursive BSP partitioning. This model mainly has the capacity to model and to manipulate most of the types of existing uncertainties in real situations, diminishing the effects of these to produce a better performance. In addition, it has the independent capacity to create and to expand its own structure automatically, to reduce the limitation referred to the number of inputs and to extract rules of knowledge from a data set. This new model provides a confidence interval, that constitutes an important information for real applications. In this context, this model surpasses the limitations of the type-2 fuzzy inference systems - complexity computational, small number of inputs allowed and limited form, or nonexistent, to create its own structure and rules - and of the type-1 fuzzy inference systems - incomplete adaptation to uncertainties and not to give an interval of confidence for the output. The type-1 fuzzy inference systems also present limitations with regard to the small number of inputs allowed, but the use of recursive partitioning, already explored with excellent results [SOUZ99], reduce significantly these limitations. This work constitutes fundamentally of four parts: a study on the different existing type-2 fuzzy inference systems, analysis of the hierarchical neuro- fuzzy systems that use type-1 fuzzy sets, modelling and implementation of the new type-2 hierarchical neuro-fuzzy BSP model and study of cases. The new model, denominated type-2 hierarchical neuro-fuzzy BSP model (T2-HNFB) was defined from the study of the desirable characteristics and the limitations of the type-2 and type-1 fuzzy inference systems and the existing hierarchical neuro-fuzzy systems that use type- 1 fuzzy sets. Of this form, the T2-HNFB model is modelling and implemented with the attributes of interpretability and autonomy, from the conception of type-2 fuzzy inference systems, neural networks and recursive BSP partitioning. The developed model is evaluated in different benchmark databases and real applications of forecast and approximation of functions. Comparisons with other models are done. The results obtained show that T2-HNFB model provides, in forecast and approximation of functions, next results and in several cases superior to the best results provided by the models used for comparison. In terms of computational time, its performance also is very good. In forecast and approximation of functions, the intervals of confidence obtained for the defuzzified outputs are always coherent and offer greater credibility in most of cases when compared with intervals of confidence obtained through traditional methods using the forecast outputs by the other models and the own T2-HNFB model.
Altunel, Fatih. "Model Updating Of A Helicopter Structure Using A Newly Developed Correlation Improvement Technique." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12611300/index.pdf.
Повний текст джерелаNastran software. v Initial updating was processed first for the whole helicopter fuselage then, tail of the helicopter was tried to be updated. Furthermore, a new method was proposed for the optimum node removal location for getting better Modal Assurance Criterion (MAC) matrix. This routine was tried on the helicopter case study and it showed better performance than the Coordinate Modal Assurance Criterion (coMAC) that is often used in such analyses.
Peacock, Christopher. "Modelling cointegrated 1(2) systems with an application to money and exchange rates." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250050.
Повний текст джерелаAlmeida, Sabrina Ribeiro de. "REPRODUÇÃO EXPERIMENTAL E CARACTERIZAÇÃO CLÍNICOPATOLÓGICA DA MAMILITE PELO HERPESVÍRUS BOVINO TIPO 2 (BoHV-2) EM OVINOS." Universidade Federal de Santa Maria, 2006. http://repositorio.ufsm.br/handle/1/10166.
Повний текст джерелаThe bovine mammillits caused by bovine herpesvirus type 2 (BoHV-2) is an important disease of dairy cattle yet very little is known about its pathogenesis. This study aimed at reproducting and characterizing the clinical-pathological aspects of bovine herpesvirus mammillits in experimentally infected sheep. In the first experiment, ten lambs were inoculated in the nasal mucosa and the virological, clinical and serological aspects of acute infection were monitorated. Virus sheeding was detected in nasal secretions of 7 lambs between days 2 and 8 post inoculation (pi) and lasted from one to three days. A serous nasal discharge, changing to mucous and mucopurulent, was observed in all animals between days 2 and 5 pi. Seven lambs developed vesicles, pustules and erosions in the nasal mucosa between days 4 and 8 pi. All inoculated animals seroconverted to BoHV-2. Dexamethasone administration at day 40 pi was not followed by virus shedding, clinical recrudescence or seroconversion. In the second experiment, eight milking ewes were inoculated in the skin of the teats and udder, and monitorated thereafter regarding to viral replication, clinical signs and histological changes. Infectious virus was isolated from lesion swabs of one ewe on days 7 and 8 pi. Five animals developed lesions in inoculation sites between days 4 and 6 pi. The clinical-pathological aspects of the lesions were similar to those of natural infections and were characterizated by erythema, edema, papules, vesicles, exsudation and scabs. By histological examination, the lesions displayed cellular edema and linfoplasmocitic multifocal infiltrate surrounding blood vessels in the dermis. Moreover, eosinophilic intranuclear inclusion bodies were observed in inflamatory cells and syncitia. Virus particles resembling herpesvirus were observed by eletronic transmission microscopy. These results indicate that sheep are susceptible to BoHV-2 infection, and can develop clinical signs similar to those observed in cattle in natural outbreaks of herpes mammillitis. Thus, this animal species may be used as a model to study pathogenesis, vaccine development and antiviral drugs.
A mamilite causada pelo herpesvírus bovino tipo 2 (BoHV-2) é uma importante enfermidade de gado leiteiro, porém pouco se sabe sobre a sua patogenia. O presente trabalho teve como objetivos reproduzir e caracterizar em ovinos as manifestações clínico-patológicas associadas com a infecção natural de bovinos pelo BoHV-2. Em um primeiro experimento, dez cordeiros foram inoculados na mucosa nasal e a infecção aguda foi monitorada nos aspectos clínicos, virológicos e sorológicos. Excreção viral em secreções nasais foi detectada em 7/10 animais entre os dias 2 e 8 pós-inoculação (pi), com duração que variou entre um e três dias. Todos animais apresentaram secreção nasal serosa, passando a mucosa e mucopurulenta, entre os dias 2 e 5 pi, e sete deles apresentaram também hiperemia e o desenvolvimento de vesículas, pústulas e erosões na mucosa nasal entre os dias 4 e 8 pi. Todos os animais soroconverteram ao BoHV-2. A administração de dexametasona aos 40 dias pi não foi seguida de excreção viral, soroconversão ou recrudescência clínica. Em um segundo experimento, oito ovelhas lactantes foram inoculadas na pele das tetas e do úbere, seguida da caracterização virológica, clínica e histopatológica da infecção aguda. O vírus foi isolado a partir de suabes coletados das lesões de uma ovelha nos dias 7 e 8 pi. Cinco (5/8) animais desenvolveram lesões nos locais de inoculação entre os dias 4 e 6 pi. As lesões apresentaram características clínicopatológicas semelhantes às observadas em infecções naturais, e se caracterizaram por hiperemia, edema, pápula, vesículas, exsudação e formação de crostas. Histologicamente, as lesões se caracterizaram por edema intracelular, presença de um infiltrado linfoplasmocitário multifocal e predominantemente perivascular na derme, além de corpúsculos de inclusão eosinofílicos intranucleares em células inflamatórias e células sinciciais. Partículas víricas com morfologia típica de herpesvírus foram observadas sob microscopia eletrônica de transmissão. Esses resultados indicam que ovinos são susceptíveis à infecção pelo BoHV-2 e desenvolvem lesões características de mamilite herpética quando inoculados experimentalmente, podendo ser utilizados para estudos de patogenia, desenvolvimento de vacinas e pesquisas de drogas antivirais.
Jaroš, Petr. "Konstrukce 1/4 modelu vozidla pro testy tlumičů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442802.
Повний текст джерелаYong, Mostyn R. "Characterisation of Polycaprolatone-Based Scaffold Plus Recombinant Human Morphogenetic Protein - 2 (RHBMP-2) in an Ovine Thoracic Spine Model." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/64093/1/Mostyn_Yong_Thesis.pdf.
Повний текст джерелаAdegoke, Adekunle M. "The one-dimensional spin-1/2 ANNNI model in non-commuting magnetic fields." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=980733596.
Повний текст джерелаWhite, Rebecca Joy. "A priming / temperament model of system 1 and system 2 decision making processes." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124291507.
Повний текст джерелаTitle from first page of PDF file. Document formatted into pages; contains x, 153 p.; also includes graphics (some col.). Includes bibliographical references (p. 118-127). Available online via OhioLINK's ETD Center
Yehia, Ali. "Wenckebach rhythms and [1:1<->2:1] bistability in single rabbit ventricular cells and in a ventricular ionic model." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36738.
Повний текст джерелаOguz, Hatice Dilek. "Pricing Us Corporate Bonds By Jarrow/turnbull (1995) Model." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12611174/index.pdf.
Повний текст джерелаSantos, Marcelo Trindade dos. "Correções Quânticas 1/N ao Limite Clássico: Aplicação ao Modelo de Lipkin SU(2)." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/43/43131/tde-15052012-141043/.
Повний текст джерелаWe show how the time dependent variational principle can be used to study quantum corrections to the classical limit, in particular of the SU(2) Lipkin Model. We show how much corrections can be cast in Hamiltonian form, coupling to the classical dynamics a set of variables associated to the quantum fluctuations. This leads to an effective dynamics which has the number of degrees of freedom doubled with respect to the classical system. As a consequence chaotic behavior emerges. We show that this semiquantal chaos is the mechanism through which tunneling is effected, and also, that these corrections systematically improve the classical results and propose some quantitative measure of this improvement.
Kaya, Orcun. "Static Hedging Strategies For Barrier Options And Their Robustness To Model Risk." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608763/index.pdf.
Повний текст джерелаGustavsson, Katarina. "Mathematical and Numerical Modeling of 1-D and 2-D Consolidation." Doctoral thesis, KTH, Numerical Analysis and Computer Science, NADA, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3497.
Повний текст джерелаA mathematical model for a consolidation process of a highlyconcentrated, flocculated suspension is developed.Thesuspension is treated as a mixture of a fluid and solidparticles by an Eulerian two-phase fluid model.W e characterizethe suspension by constitutive relations correlating thestresses, interaction forces, and inter-particle forces toconcentration and velocity gradients.This results in threeempirically determined material functions: a hystereticpermeability, a non-Newtonian viscosity and a non-reversibleparticle interaction pressure.P arameters in the models arefitted to experimental data.
A simulation program using finite difference methods both intime and space is applied to one and two dimensional testcases.Numer ical experiments are performed to study the effectof different viscosity and permeability models. The effect ofshear on consolidation rate is studied and it is significantwhen the permeability hysteresis model is employed.
Covington, David Allen. "The pattern of glory a model for apologetics from 2 Corinthians 4:1-6 /." Theological Research Exchange Network (TREN), 1997. http://www.tren.com.
Повний текст джерелаUner, Gorkem. "Development Of A Material Cutting Model For Haptic Rendering Applications." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12609185/index.pdf.
Повний текст джерелаpowered computer. My goal was to build a six degree &ndash
of &ndash
freedom force model to allow user to interact with three &ndash
dimensional deformable objects. Methods for haptic rendering including graphical rendering, collision detection and force feedback are illustrated, implementation of haptic rendering system is introduced, and application is evaluated to explore the effectiveness of the system.
Atabay, Seda. "Social Market Economy: A Discursive Framework For European Social Model?" Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610222/index.pdf.
Повний текст джерелаJezo, Tomas. "Z' and W' gauge bosons in SU(2)xSU(2)xU(1) models : Collider phenomenology at LO and NLO QCD." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENY071/document.
Повний текст джерелаGeneral SU(2)x SU(2)x U(1) models represent a well-motivated intermediate step towards the unication of the Standard Model (SM) gauge groups. Extended gauge group sector, as compared to that of the SM, leads to additional neutral and charged gauge bosons. These so-called Z' and W' bosons are actively searched for at the Large Hadron Collider (LHC). Based on a recent global analysis of low-energy and LEP constraints of these models, we perform numerical scans of their various signals at the LHC at Leading Order accuracy. We show that total cross sections for lepton and third-generation quark pairs, while experimentally easily accessible, provide individually only partial information about the model realized in Nature. In contrast, correlations of these cross sections in the neutral and charged current channels may well lead to a unique identification. Subsequently we study the electroweak top-pair production at Next-to-leading Order (NLO) accuracy in the SM extensions with an additional Z' boson assuming general flavour-diagonal couplings. We calculate the virtual and real corrections at order O(alS*alW^2) and implement them in the POWHEG BOX framework which allows for consistent matching of NLO QCD calculations with parton showers. We find that the NLO corrections can be very important but the K-factors in the invariant mass region around the resonance mass are modest
LeSage, James P., and Manfred M. Fischer. "Conventional versus network dependence panel data gravity model specifications." WU Vienna University of Economics and Business, 2019. http://epub.wu.ac.at/6828/1/2019%2D2%2D11_v12_panel_gravity_model.pdf.
Повний текст джерелаSeries: Working Papers in Regional Science
Rumler, Fabio. "Computable general equilibrium modeling. Numerical simulations in a 2-country monetary general equilibrium model." Inst. für Volkswirtschaftstheorie und -politik, WU Vienna University of Economics and Business, 1999. http://epub.wu.ac.at/70/1/document.pdf.
Повний текст джерелаSeries: Department of Economics Working Paper Series
Howe, Peter A., and n/a. "Designing and evaluating an inservice model for mathematics education in the primary school." University of Canberra. Education, 1987. http://erl.canberra.edu.au./public/adt-AUC20060726.164520.
Повний текст джерелаSnook, Max Ray. "An examination of the Petrine model for the development of knowledge from 2 Peter 1:5." Theological Research Exchange Network (TREN), 1995. http://www.tren.com.
Повний текст джерелаQuirici, Wagner José. "Modelo conceitual para o desenvolvimento de arranjos produtivos locais." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/12/12139/tde-18062007-153505/.
Повний текст джерелаThe globalization of the economy, the progressive elimination of barriers to trade and the opening of national markets, have produced a strong impact on the local production structures, carrying out threats and opportunities to small and medium companies demanding of them an strategy that insert them in the new economy. The emerge of conglomeration of companies of the same sector of specialization, so called local productive arrangements, has propitiate to the small and medium companies an important insertion strategy in the global market. Indeed, this kind of industrial/regional organization has become an important piece in the implementation of industrial, regional and technological policies to respond to increasingly open markets. There are in the literature many studies on local productive arrangements. Accordingly, a significant part of empirical studies on this subject has been focused on the potential of a sector, in a specific region, to become a local productive arrangement based on quantitative analysis (regional specialization, index of concentration in industrial sectors, number of employees in sector etc.). In contrast, there are few studies that try to understand the nature of the phenomena, its startup?s main drivers factors, the pattern of development of these arrangements and how the local stakeholders could plan and manager them. Taking this into account, it is necessary to develop conceptual models that are able to overcome this deficiency. A combination of quantitative and qualitative analysis is therefore appropriate to identify the most competitive industries and their internal interrelationships. Qualitative analysis such as interviews with local leaders for instance are required to understand interactions and relationships identified through quantitative tools. Beyond the actual findings obtained, analysis can also help identify the most suitable policy targets as well as benchmarks for the evaluation of subsequent arrangement?s plan and management of its performance. This is the aim of this paper, an exploratory research based on theory review, case studies and interviews with local stakeholders propose a conceptual model to plan and to manager the phenomena of local productive arrangements. The greatest benefit of the conceptual model is thus its capacity to give regional economic development policy and sometimes fragmented organizations and plan areas a unifying focus.
Saglam, Ferhat. "Identification Of Low Order Vehicle Handling Models From Multibody Vehicle Dynamics Models." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611505/index.pdf.
Повний текст джерелаHasselfield, Matthew. "Localization of a particle due to dissipation in 1 and 2 dimensional lattices." Thesis, Vancouver : University of British Columbia, 2006. http://hdl.handle.net/2429/74.
Повний текст джерелаReichl, Johannes, and Sylvia Frühwirth-Schnatter. "A Censored Random Coefficients Model for the Detection of Zero Willingness to Pay." Springer, 2011. http://epub.wu.ac.at/3707/1/WU_epub_(2).pdf.
Повний текст джерелаLambers, Rebeca. "Development of a model to risk manage construction defects in the residential sector." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/134079/2/Rebeca_Lambers_Thesis%5B1%5D.pdf.
Повний текст джерелаFlottat, Thibaut. "Bosons couplés à des spins 1/2 sur réseau." Thesis, Université Côte d'Azur (ComUE), 2016. http://www.theses.fr/2016AZUR4080/document.
Повний текст джерелаStrongly correlated systems, where new surprising phases of matter may appear both in the context of ultra-cold atoms and cavity quantum electrodynamics, are the focus of intense experimental and theoritical activity. In this thesis we present a study of two models of bosons with two or zero internal states, that is to say spin-1/2 or spin-0 bosons. These particles can move around a lattice, and they are locally coupled to immobile spins 1/2. Our interest was to determine the ground state phase diagram, study phase properties and quantum phase transitions. We used two methods: an approximate one using a mean field approach and the other using quantum Monte-Carlo simulations, which provides numerically exact results. The first model, namely the bosonic Kondo lattice model, is in the context of ultra-cold atoms in optical lattices. We found that its physics is close to that of the Bose-Hubbard model, exhibiting Mott and superfluid phases. The local coupling strengthens the insulating behaviour of the system and magnetism emerges through indirect or direct coupling between bosons. Thermal effects, inherent in experiments, are also studied. The second model, which is in the context of light-matter interaction, describes a situation of an ultra-strong coupling between spin-0 bosons (photons) and local spins 1/2 (two levels atoms) and is known as the Rabi lattice model. The phase diagram generally consists of only two phases: a coherent phase and a compressible incoherent one. The locals
Ferreiro, Rangel Carlos Augusto. "Molecular simulation studies in periodic mesoporous silicas SBA-2 and STAC-1 : model development and adsorption applications." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5272.
Повний текст джерелаPalmer-Anghel, Cristina Ana-Maria. "On quantum Invariants : homological model for the coloured jones polynomials and applications of quantum sl(2/1)." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC035/document.
Повний текст джерелаThe domain of this thesis is within quantum topology and its subject is focused towards the interaction between low dimensional topology and representation theory. My research con- cerns different aspects of quantum invariants for links and $3$-manifolds, aiming to create bridges between algebraic and topological ways of defining them. On one hand, an algebraic and combinatorial description for a mathematical concept, creates the opportunity to develop computational tools. On the other hand, topological and geometrical descriptions open per- spectives towards constructions that lead to a deeper understanding and more subtle theories.The coloured Jones polynomials are quantum link invariants constructed from the representa- tion theory of $U_q(sl(2))$. The first invariant of this sequence is the original Jones polyno- mial, which can be characterised also by skein theory. Bigelow and Lawrence described a homological model for the Jones polynomial. They used the Lawrence representation, which is a braid group representation on the homology of coverings of configuration spaces in the punctured disk, and the skein nature of the invariant for the proof. In contrast to this case, the other coloured Jones polynomials cannot be defined in an easy manner by skein theory.In the first part of this thesis, we give a topological model for the coloured Jones polynomi- als. We use their definition as quantum invariants and construct step by step topological cor- respondents. We first observe that the invariant can be encoded through so-called highest weight spaces and then use a result by Kohno, which identifies these spaces with Lawrence representations. We prove that the coloured Jones polynomials can be obtained as graded geometric intersection pairings between homology classes in certain coverings of the config- uration spaces of points in the punctured disk.The second and third parts are oriented towards applications of representation theory of super quantum groups to quantum invariants.The second part is a collaboration with N. Geer, where we construct quantum invariants for$3$-manifolds from representations of $U_q(sl(2|1))$. Turaev-Viro defined a state-sum type method that gives $3$-manifold invariants from $U_q(sl(2))$. For super quantum groups, this leads to vanishing invariants. Later on, Geer-Patureau-Turaev defined a modified method which starts with a category with good properties and leads to non-vanishing invariants. Our strategy is to construct a category that fits into the input of this modified method.The third part concerns the study of centralizer algebras for representations of $U_q(sl(2|1))$. Wagner and Marin conjectured the dimensions of a sequence of centralizer algebras corre- sponding to the simple standard $U_q(sl(2|1))$-representation. We prove this conjecture us- ing combinatorial techniques
Bagci, Mediha Ozlem. "An Analysis Of The Thermal Performance Of Metu Staff Housing Units And Calibration Of Their Simulated Model." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609616/index.pdf.
Повний текст джерелаthe measurement period was determined according to the coldest days of the year. In this context, the temperature and humidity charts were evaluated and one of the units was simulated using the software tool Ecotect v.5.20. The simulation temperature charts demonstrate similar behavior and trends as the measured temperature
although, it was approximately 4 0C lower than the measured temperature. The possible reason for such a difference may be the precision of the material properties. Six different calibrations were tested by changing the thermal properties of the envelope materials to obtain comparable results with the measured temperature readings. Based on the calibrated model, it was found that an increase in the U-value of the envelope materials did not have a significant effect on the simulated temperature charts.
Lugo-González, Isaías Vicente, Yuma Yoaly Pérez-Bautista, Ana Leticia Becerra-Gálvez, Margarita Fernández-Vega, and Leonardo Reynoso-Erazo. "Percepción emocional del COVID-19 en México: Estudio comparación entre la fase 1, fase 2 y medios de información." Instituto Peruano de Orientación Psicológica, 2021. http://hdl.handle.net/10757/656798.
Повний текст джерелаInan, Cem. "Development Of A Ventilation Model For The G Field Of Cayirhan Coal Mine." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12605865/index.pdf.
Повний текст джерелаayirhan G Field. Information describing the geometry of a ventilation network, airway characteristics and locations, characteristics of different fans were prepared as an input. The output includes predicted airflows, frictional pressure drops, air power, losses in airway and fan operating points for different trials. After different trials it has been found that for auxiliary ventilation, where minimum required amount of air is 6 m3/s, ENGART, 30A 40SCV/60HR model fan which is the most economical one was selected. For main ventilation system, 5 fans which provide airflow more than minimum requirement were chosen. Among them the most economical one, that is ALPHAIR-5400VAX2100 HB, was selected for the mine.
Chaboussant, Grégory. "Étude expérimentale d'une échelle de spin-1/2 antiferromagnétique : Cu2(C5H12N2)2Cl4." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10007.
Повний текст джерелаBaser, Erkan. "Visual Tracking With Motion Estimation And Adaptive Target Appearance Model Embedded In Particle Filtering." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610092/index.pdf.
Повний текст джерелаt belong to target makes the motion estimation biased, the algorithm includes robust estimators to make the tracker reliable. Within the scope of this thesis the visual tracker proposed in [5] is implemented and the same problem is solved by proposing a Rao-Blackwellized Particle Filter. To deal with problems encountered during the implementation phase of the algorithm some improvements are made such as utilizing learning rate for the computation of adaptive velocity estimation. Moreover, some precautions are taken such as checking the velocity estimations to validate them. Finally, we have done several experiments both in indoor and outdoor environments to demonstrate the effectiveness and robustness of the implemented algorithm. Experimental results show that most of the time the visual tracker performs well. On the other hand the drawbacks of the implemented tracker are indicated and we explain how to eliminate them.
Hurley, Margaret M. "Analysis of the dipolar lattice gas as a model for self-assembly in 1 and 2-dimensional systems /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487780393265179.
Повний текст джерелаBuntine, James D. Saffman P. G. "Part 1. Inviscid, swirling flows and vortex breakdown. : Part 2. A numerical investigation of the Lundgren turbulence model /." Diss., Pasadena, Calif. : California Institute of Technology, 1994. http://resolver.caltech.edu/CaltechETD:etd-10182005-082716.
Повний текст джерелаNixdorf, Timothy Allen. "A Mathematical Model for Carbon Nanoscrolls." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406060123.
Повний текст джерелаMüller, Uwe. "Umfassende klassische Analyse des geeichten SL(2,R)-U(1)-Wess-Zumino-Novikov-Witten-Modells." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 1998. http://dx.doi.org/10.18452/14525.
Повний текст джерелаAbstract In recent years, Black Holes have attracted much attention, in particular, because of their unusual quantum-theoretical properties. An interesting model, in this context, is the SL(2,R)/U(1) gauged Wess-Zumino-Novikov-Witten model, which can be interpreted stringtheoretically as Euclidean two-dimensional Black Hole. The present dissertation analyzes the classical properties of this model, in order to prepare the basis for quantum-theoretical investigations. First, gauged Wess-Zumino-Novikov-Witten (WZNW) models are intoduced in general. Usually, they are formulated including gauge fields, whose equations of motion are purely algebraic. In the present dissertation, the gauge fields are eliminated from the models. A class of non-linear integrable field theories arises, whose equations of motion can be represented by Lax pairs explicitly. These results are specialized to the SL(2,R)/U(1) gauged WZNW model. For comparison, the elimination of the gauge field by explicit path integration is also investigated. But due to mathematical ambiguities, this investigation does not lead to a final result. The classical SL(2,R)/U(1) gauged WZNW model is investigated in an infinitely extended Minkowski space-time as well as with spatially periodic boundary conditions. The latter is important for the stringtheoretical interpretation of the model. The non-linear equations of motion and their general solution are given. A procedure is derived to determine the parameter functions of the general solution from given initial conditions of the equations of motion. By means of this procedure the Poisson brackets of the parameter functions are calculated from the canonical Poisson brackets of the physical fields. It is shown that there is a non-local canonical transformation of the non-linear physical fields onto free fields. The corresponding Backlund transformation is presented.
Šindelářová, Šárka. "Procesní model organizace." Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-165131.
Повний текст джерелаMusta, Mustafa Nail. "Implementation Of Turbulence Models Into A Navier-stokes Solver." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605357/index.pdf.
Повний текст джерелаNavarro, Serer Judith 1990. "Understanding functional interplay between PARP-1 and PARP-2 in T cell development and function." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/481994.
Повний текст джерелаL’homeòstasi de la cèl·lula T ha d’estar estrictament regulada per tal de garantir una correcta resposta immunitària i prevenir alhora qualsevol problema immunopatològic. Aquest correcte manteniment depèn, entre d’altres, de la interacció amb el complex MHC-TCR i de les senyals de diferents interleuquines. No obstant, hi ha altres factors intrínsecs que intervenen en la modulació de les funcions vitals de la cèl·lula T i que han d’estar també correctament integrats en tot el sistema per tal de garantir una correcta estabilitat genòmica i contribuir en el control de l’homeòstasi de la cèl·lula T. El present treball estableix el paper coordinat entre els enzims poli (ADP-ribosa) polimerasa-1 (PARP-1) i PARP-2 en el manteniment del nombre i la funció dels limfòcits T, tal i com es demostra amb el defecte en maduració i el descens en el número de cèl·lules CD4+ i CD8+ perifèriques que tenen els ratolins amb deleció de PARP-2 en un background PARP-1 deficient. A més a més, aquesta limfopènia està associada amb un increment del dany en el ADN i una concomitant mort cel·lular, que condueix al desenvolupament espontani de limfomes T molt agressius en els ratolins dobles deficients per PARP-1 i PARP-2. Els nostres resultats posen de manifest la importància de conèixer correctament el paper específic de les dues proteïnes en processos biològics rellevants, ja que podria tenir especial impacte en el desenvolupament i l’explotació dels inhibidors PARP.
Ody, Michael S. "The (2+1)-dimensional non-linear O(3) sigma model and the classical differential geometry of curves and surfaces." Thesis, University of Kent, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358169.
Повний текст джерелаSakinc, Mustafa Erdem. "Finance Of The Software Industry In Turkey." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610818/index.pdf.
Повний текст джерелаfinance in Turkey. Later, the growth cycle model is implemented for Turkey to analyze the potential of financial sources for Turkish software firms with relevant quantitative data. It is seen that the interest of available financial sources towards high-tech sectors is limited and unconcerned. In addition, an inquiry for the finance of the software industry is also done through the analysis of interviews performed with managers of software firms and several funding organizations. Instabilities and uncertainties of the Turkish economy, underdevelopment of a national strategy on software and the lack of interest of available financial sources towards software industry are the major handicaps for the growth of software firms and the industry as a whole. A selective national industrial strategy on software is crucial for the true allocation of financial resources towards software firms.
Philips, Julia Rachel. "B-1 and B-2 B cell responses to lipopolysaccharide putative roles in the pathogenesis of periodontitis /." University of Sydney, 2006. http://hdl.handle.net/2123/1852.
Повний текст джерелаPeriodontal disease is one of the most widespread diseases in humans and is characterised by chronic gingival inflammation and B cell accumulation and resorption of the crest of alveolar bone with subsequent loss of teeth. Porphyromonas gingivalis has been identified as a putative aetiological agent for periodontitis. The aim of the research presented in this thesis was to investigate, using in vitro systems, the responses of autoreactive B-1 and B-2 cells to enterobacterial and nonenterobacterial lipopolysaccharide (LPS) to shed light on the pathogenesis of chronic periodontitis and other diseases involving B cell accumulation and autoantibody production. The hypotheses tested were: (1) B cells respond differently to enterobacterial and non-enterobacterial LPS. (2) B-1 cells are activated by a lower concentration of LPS than B-2 cells. (3) LPS stimulation results in preferential accumulation of B-1 cells. Findings consistent with these hypotheses would provide new evidence for different roles for B-1 and B-2 cells in immune responses and that LPS stimulation could lead to B-1 cell accumulation in diseases thus characterised. Initial experiments investigated the responses of representative B-1 (CH12) and B-2 (WEHI-279) cell lines to preparations of P. gingivalis and Salmonella enteritidis LPS utilising flow cytometric and quantitative molecular methods. The cell lines responded differently to the two LPS preparations. There were significant but limited effects on viability and proliferation in the WEHI-279 cell line, but no significant changes in mRNA expression levels for genes including Toll-like receptors (TLR2, TLR4, RP105), immunoglobulin (IgM), cytokines (IL-6, IL-10), co-stimulatory molecules (CD80, CD86), and regulators of apoptosis (Bcl-2, Bax). In the CH12 cell line however, LPS stimulation had greater effect. Addition of S. enteritidis LPS from a threshold level of 100ng/mL was found to rescue the cells from death, reflected by the percentage viability and proliferation. Stimulation of CH12 cells with S. enteritidis LPS also led to a decrease in expression of RP105 mRNA, which may be part of a negative feedback loop. Interestingly, stimulation with low concentrations P. gingivalis LPS appeared to inhibit proliferation but high LPS concentrations stimulated proliferation of CH12 cells, although no further significant effects were noted in other analyses. Evidence was found that CH12 cells have a high basal level of activation. This suggests that this line is constitutively activated. Stimulation with P. gingivalis or S. enteritidis LPS did not affect the level of CD80 mRNA expression. It is possible that the CH12 line constitutively expresses a maximal level of CD80 (and possibly CD86) and further stimulation will not cause any increase. Since S. enteritidis LPS appeared to have more pronounced effects on both B cell populations, this LPS was used to further investigate B cell subset responses in a mixed splenocyte culture system. Experiments examining percentage viability and number of viable cells indicated that B-1 and B-2 B cells responded differently to LPS stimulation. A threshold level for B-2 cell response (significant increase in cell number) was found to be 100ng/mL LPS, in contrast to the B-1 B cell subset which were only significantly different to the unstimulated cells when stimulated with 50μg/mL LPS. By examining the expression of CD80, the majority of murine splenic B-1 cells were found to activated prior to any LPS stimulation in vitro. In contrast, the B-2 subset showed significant increase in CD80 expression only at high (≥10μg/mL) LPS concentrations. Studies of the division index of B-1 and B-2 cells showed a significant response in both subsets following stimulation with 1μg/mL and 10μg/mL LPS. However, overall, the results are inconsistent with LPS driving the preferential accumulation of B-1 cells in disease states. These experiments provided useful evidence that supported the idea that B-1 and B-2 cells respond differently to LPS. However, these studies were unable to directly address the role of P. gingivalis LPS in periodontitis. It may be that P. gingivalis LPS could have different effects to S. enteritidis LPS on primary B cells. It is still possible that B-1 cells may be more sensitive to P. gingivalis, as opposed to S. enteritidis LPS. Studies by other groups have suggested that the TH1/TH2 profile is skewed towards TH2 in chronic periodontitis and that P. gingivalis may drive this shift via its ability to signal through TLR2 (and modulate TLR4 signalling). Further, recent studies in our laboratories have found that P. gingivalis gingipains are able to polyclonally activate B cells and to break down both IFNγ and IL-12. Future studies should further examine the effects of B-1 and B-2 interactions in the mixed lymphocyte system together with subsequent studies utilising human periodontitis biopsies. The results presented in this thesis, together with work undertaken by other investigators, suggests that LPS could perturb the normal homeostatic mechanisms of the B-1 B cell-subset and increase polyclonal activation therefore contributing to the genesis of pathologies such as chronic periodontitis.
Wijesiri, Narayana Don Nimal Wijesiri. "Representation of identity in Sinhala theater: The impact of the religious/charity model." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235387/1/Nimal%2BWijesiri%2BThesis%2B%282%29.pdf.
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