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Relevant bibliographies by topics / Parametric sensitivity / Dissertations / Theses

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Dissertations / Theses on the topic 'Parametric sensitivity'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Witzgall, Zachary F. "Parametric sensitivity analysis of microscrews." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4892.

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Thesis (M.S.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains xi, 73 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 52-53).

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2

Sulieman, Hana. "Parametric sensitivity analysis in nonlinear regression." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0004/NQ27858.pdf.

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Gholami, Farnood. "Sensitivity and parametric analyses of multibody mechanical systems." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103734.

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Sensitivity and parametric analyses are powerful tools in assisting engineers to improve design, control and operation of mechanical systems. Sensitivity derivatives help designers to understand the behaviour of the system at hand and modify the design to achieve more satisfactory results. Moreover, these derivatives are beneficial in optimum design, optimal control algorithms, and parameter identification methods. In addition to all these applications, sensitivity derivatives can be used to develop methods for parametric analysis of multibody systems; the formulation of such a method is also

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4

Gray, W. Steven. "A geometric approach to the parametric sensitivity of dynamical systems." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/15632.

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5

Duke, John R. "A Markov model for parametric sensitivity analysis of Crusader effectiveness." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA316985.

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Thesis (M.S. in Operations Research) Naval Postgraduate School, June 1996.<br>Thesis advisor(s): Donald P. Gaver, Patricia A. Jacobs. "June 1996." Includes bibliographical references. Also available online.

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6

Chua, Hung Soon. "Shape sensitivity of parametric CAD models and strategies for their improvement." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546029.

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7

Chai, Wenqi. "Global sensitivity analysis on vibro-acoustic composite materials with parametric dependency." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEC037/document.

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Avec le développement rapide des modèles mathématiques et des outils de simulation, le besoin des processus de quantification des incertitudes a été bien augmenté. L'incertitude paramétrique et la groupe des nombreux décisions sont aujourd’hui les deux barrières principales dans la résolution des grandes problèmes systématiques.Capable de proportionner l'incertitude de la sortie sur celle des entrées, l’Analyse de Sensibilité Globale (GSA) est une solution fiable pour la quantification de l’incertitude. Parmi plusieurs algorithmes de GSA, Fourier Amplitude Sensitivity Analysis (FAST) est l’un

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Zubairi, Mohammad Shaheer. "Using parametric sensitivity analysis to detect design intent in CAD assemblies." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675418.

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The intellectual arrangement of parts in an assembly is a difficult task. Modern CAD environments contain tools which allow CAD part models to be brought together and problems such as clashes to be discovered. Clashes occur when components in an assembly unintentionally violate others. If clashes are not identified and designed out before manufacture, the physical parts will not assemble together without rework. This work introduces a novel approach for eliminating clashes by identifying which parameters defining the part features in a CAD assembly need to change, and by how much, to eliminate

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9

Louh, Hsing-Duan. "Parametric Sensitivity in a Model of a Motor Pattern Generator in Aplysia." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case159558630128468.

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10

Giovannini, Alessandro. "Parametric Sensitivity Analysis of the Most Recent Computational Models of Rabbit Cardiac Pacemaking." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4800/.

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The cellular basis of cardiac pacemaking activity, and specifically the quantitative contributions of particular mechanisms, is still debated. Reliable computational models of sinoatrial nodal (SAN) cells may provide mechanistic insights, but competing models are built from different data sets and with different underlying assumptions. To understand quantitative differences between alternative models, we performed thorough parameter sensitivity analyses of the SAN models of Maltsev & Lakatta (2009) and Severi et al (2012). Model parameters were randomized to generate a population of cell model

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11

Miao, Shicong. "A Parametric Study For Panel Buckling Sensitivity Of Composite Sandwich Wind Turbine Blades." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1323963140.

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12

Menin, Michel. "Parametric sensitivity study for wind power trading through stochastic reserve and energy market optimization." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257502.

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Trading optimal wind power in energy and regulation market offers possibil-ities for increasing revenues as well as impacting security of the system in apositive way[33]. The bidding in both energy and regulation markets can bedone through stochastic optimization process of both markets.Stochastic optimization can be possible once the probabilistic forecst is avail-able through ensemble forecast methodology. For stochastic optimization, thepost-processing of the ensembles to generate quantiles that will be used in op-timization can be accomplished by employing different methodology. In thisstu

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13

Zhou, Haochuan. "New Non-Parametric Confidence Interval for the Youden." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/math_theses/56.

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Youden index, a main summary index for the Receiver Operating Characteristic (ROC) curve, is a comprehensive measurement for the effectiveness of a diagnostic test. For a continuous-scale diagnostic test, the optimal cut-point for the positive of disease is the cut-point leading to the maximization of the sum of sensitivity and specificity. Finding the Youden index of the test is equivalent to maximize the sum of sensitivity and specificity for all the possible values of the cut-point. In this thesis, we propose a new non-parametric confidence interval for the Youden index. Extensive simulatio

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14

Kozderka, Michal. "Parametric LCA approaches for efficient design." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAD050/document.

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Ces travaux de recherche portent sur la problématique de la mise en pratique de l'analyse de cycle de vie (ACV). La question principale est : comment faire une ACV plus rapide et plus facilement accessible pour la conception des produits ? Nous nous concentrons sur deux problématiques qui prolongent l'inventaire de Cycle de Vie (ICV) : • recherche des données manquantes : Comment ranger les données manquantes selon leur importance? Comment traiter l'intersection des aspects qualitatifs et les aspects quantitatifs des données manquantes? • Modélisation du cycle de vie : Comment réutiliser le cy

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15

Zhang, Tianyao. "A study on the heat transfer and energy performance implications of cool roofs." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52977.

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In this study, we examined the effect of cool roofs on commercial and residential buildings in each climate zone, by looking at monitored case studies and DOE-2 simulations from various sources of literature; and using an online tool - the Cool Roof Calculator and a simple COP ratio model to validate the results of the case studies. It was found that the Cool Roof Calculator does not take building form into account, hence a sensitivity analysis was first conducted to rank the importance of various building parameters against one another. The analysis was conducted on the EPC n

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16

Park, Sungho. "Development and Applications of Finite Elements in Time Domain." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/30693.

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A bilinear formulation is used for developing the time finite element method (TFM) to obtain transient responses of both linear, nonlinear, damped and undamped systems. Also the formulation, used in the h-, p- and hp-versions, is extended and found to be readily amenable to multi-degree-of-freedom systems. The resulting linear and nonlinear algebraic equations for the transient response are differentiated to obtain the sensitivity of the response with respect to various design parameters. The present developments were tested on a series of linear and nonlinear examples and were found to yield,

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17

Moschetti, Lorenzo. "Parametric Sensitivity Study of Shear-Flexure Interaction Modeling for Reinforced Concrete Structural Walls under Cyclic Loading." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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In order to predict the inelastic hysteretic behavior of reinforced concrete (RC) structural walls under lateral cyclic loading, robust and reliable numerical tools are required. The Shear-Flexure-Interaction Multiple-Vertical-Line-Element-Model (SFI-MVLEM) proposed by Kolozvari et al. (2015) incorporates important material characteristics and behavioral response features, therefore it promises excellent capabilities. In reference to the SFI-MVLEM approach, this study investigates the global response (i.e. lateral load versus lateral top displacement) sensitivity to some input parameters, in o

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18

Edwards, Tyler A. "A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275667559.

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19

SANDOVAL, PEDRO EMILIO GALLARDO. "PARAMETRIC SENSITIVITY ANALYSIS CONSIDERING THE LIFE CYCLE OF BASE OILS FOR THE PRODUCTION OF MINERAL AND VEGETABLE LUBRICANTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31415@1.

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A constante procura por desenvolvimento sustentável tem originado a criação de novas técnicas de avaliação dos custos ambientais nos sistemas de produção. Atualmente a produção de óleos lubrificantes está sendo ambientalmente avaliada devido aos grandes impactos ambientais gerados pela produção, utilização e disposição final dos óleos de base mineral. Como alternativa para os óleos de bases minerais vem-se estudando a substituição por óleos oriundos de bases animais e vegetais, os quais apresentam melhores características ambientais. Este trabalho teve por objetivo realizar uma análise de cicl

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20

Chesson, Kristin Elaine. "A one-group parametric sensitivity analysis for the graphite isotope ratio method and other related techniques using ORIGEN 2.2." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1944.

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21

Rashidi, Mehrabadi Niloofar. "Power Electronics Design Methodologies with Parametric and Model-Form Uncertainty Quantification." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/82934.

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Modeling and simulation have become fully ingrained into the set of design and development tools that are broadly used in the field of power electronics. To state simply, they represent the fastest and safest way to study a circuit or system, thus aiding in the research, design, diagnosis, and debugging phases of power converter development. Advances in computing technologies have also enabled the ability to conduct reliability and production yield analyses to ensure that the system performance can meet given requirements despite the presence of inevitable manufacturing variability and variati

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Auer, Zbyněk. "Citlivostní analýza v energetickém hodnocení budov." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265418.

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The master´s thesis was focused on parametric computer simulations of the energy performance of buildings. The aim is to determine the sensitivity of the individual operating and climatic influences on the final energy demand of the building, which will be reflected in final form Et-curve. Parametric simulation for building energy efficiency is planned to use the BSim and ready climatic database for a specific location in place of the assessed building. The outcome of the evaluation of the real use of property in Et-curve using a custom application.

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23

Labrik, Rachid. "Integration of energy management and production planning : Application to steelmaking industry." Thesis, KTH, Optimeringslära och systemteori, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-141432.

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Steelmaking industry, one of the most electricity-intensive industrial processes, is seeking for new approaches to improve its competitiveness in terms of energy savings by taking advantage of the volatile electricity prices. This fluctuation in the price is mainly caused by the increasing share of renewable energy sources, the liberalization of energy markets and the growing demand of the energy. Therefore, making the production scheduling of steelmaking processes with knowledge about the cost of the energy may lead to significant cost savings in the electricity bills. With this aim in mind,

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24

BORGES, ANTONIO A. "Combinacao entre os metodos diferencial e da teoria de pertubacao para calculo dos coeficientes de sensibilidade." reponame:Repositório Institucional do IPEN, 1998. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9267.

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Made available in DSpace on 2014-10-09T12:25:30Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:02:44Z (GMT). No. of bitstreams: 1 06213.pdf: 4263088 bytes, checksum: 543c6cb711764dac098c3b7d24f8c9cc (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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BORGES, ANTONIO A. "Uma combinação entre os métodos diferencial e da teoria de perturbação para o cálculo dos coeficientes de sensibilidade." reponame:Repositório Institucional do IPEN, 1998. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9267.

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Made available in DSpace on 2014-10-09T12:25:30Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:02:44Z (GMT). No. of bitstreams: 1 06213.pdf: 4263088 bytes, checksum: 543c6cb711764dac098c3b7d24f8c9cc (MD5)<br>Desenvolve-se aqui um novo método para calcular coeficientes de sensibilidade. Este novo método é uma combinação entre as duas metodologias usadas para calcular estes coeficientes, que são o método diferencial e o método da teoria da perturbação generalizada. O método consiste em fazer como parâmetro integral o fluxo médio em uma região arbitrária do sistema. De

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Schirén, Whokko, and Trixie Swahn. "Vibrations in residential timber floors : A comparison between the current and the revised Eurocode 5." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-89293.

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The European standard Eurocode 5, a design method for timber structures,is currently under revision. In this study the draft for a reviseddesign method for vibrations in timber floors was compared to the currentmethod. The hypothesis of the thesis was that the revised designmethod might force some changes to the present construction practiceand that these changes may carry with them increased costs for the industry.Six common floor structures used in Sweden today were identifiedand for these floors design calculations were made according to the currentand the revised design method. It was chec

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Guo, Yichao. "Analytical Study On Compound Planetary Gear Dynamics." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1312289370.

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28

Jakel, Roland. "Using a Catenary Equation in Parametric Representation for Minimizing Stress Concentrations at Notches." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-172192.

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Der Vortrag beschreibt, wie sich mittels Kettenlinien als Kerbgeometrie der Spannungskonzentrationsfaktor an Querschnittsübergängen auf nahezu 1 reduzieren lässt. Mittels globaler Sensitivitätsstudien in der p-FEM-Software Creo Simulate wird mithilfe eines in Creo Parametric parametrisierten CAD-Modells der Kettenlinie in Parameterdarstellung ein normiertes Kerbzahldiagramm erstellt. Dieses erlaubt die Dimensionierung einer Kerbe, d.h. die Festlegung ihrer exakten Geometrie und der damit verbundenen Kerbzahl αk ohne die weitere Verwendung eines FEM-Programmes<br>The presentation describes how

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Seelbinder, David [Verfasser], Christof [Akademischer Betreuer] [Gutachter] Büskens, and Stephan [Gutachter] Theil. "On-board Trajectory Computation for Mars Atmospheric Entry Based on Parametric Sensitivity Analysis of Optimal Control Problems / David Seelbinder ; Gutachter: Christof Büskens, Stephan Theil ; Betreuer: Christof Büskens." Bremen : Staats- und Universitätsbibliothek Bremen, 2017. http://d-nb.info/1141277700/34.

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Akansel, Vesile Hatun. "Fragility Of A Shear Wall Building With Torsional Irregularity." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613542/index.pdf.

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Buildings with torsional irregularity represent the main focus of many current investigations. However, despite this volume of research, there is no established framework that describes adequately the seismic vulnerability of reinforced concrete shear wall systems. In this study, the three-dimensional behavior of a particular shear-wall structure under earthquake effects was examined with regard to the nonlinear behavior of the reinforced concrete assembly and the parameters that characterize the structure exposed to seismic motion for damage assessment. A three story reinforced concrete shear

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31

Di, Chicco Augusto. "Optimization of a calculation scheme through the parametric study of effective nuclear cross sections and application to the estimate of neutronic parameters of the ASTRID fast nuclear reactor." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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This thesis presents the project for the optimization of the APOLLO3® neutronic calculation scheme applied to the 4th generation fast neutron reactor ASTRID. APOLLO3® is the new multipurpose neutronic platform developed by the CEA. It incorporates many of the previous generation codes used in the French reactor core design supply chain. Like all deterministic codes, APOLLO3® solves the neutron transport equation with a discretization of the variables of interest: multi-group method for the energy, discrete ordinates and spherical harmonics for the angular variable, collision probabilities and

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Mattos, Wellington da Silva. "Ajuste do modelo matemático de uma aeronave com sistema de aumento de estabilidade com base em ensaios em túnel de vento." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-20092007-171040/.

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O presente trabalho descreve a aplicação de um método de ajuste de modelo, com base em resultados experimentais obtidos em túnel de vento, a uma aeronave com sistema de aumento de estabilidade longitudinal (LSAS). O estudo inclui uma revisão de métodos para ajuste de modelos, o desenvolvimento do modelo matemático da aeronave e uma descrição dos ensaios em túnel de vento da aeronave com o LSAS. O sistema automático de controle é composto de (1) um sistema de aquisição de dados, que processa o sinal do sensor e envia um sinal de comando para o atuador; (2) um potenciômetro, usado como sensor de

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Barrera, Gallegos Noé. "Sensibilité Paramétrique pour l’Analyse Dynamique des Réseaux à Courant Continu." Thesis, Ecole centrale de Lille, 2016. http://www.theses.fr/2016ECLI0021/document.

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Ce travail de thèse a pour finalité de présenter différentes méthodologies pour l’analyse de réseaux à courant continue haut tension (HVDC). La théorie fondamentale de l‘analyse de sensitivité s’applique sur l’analyse des systèmes électriques de puissance dans les différentes étapes de la production et la transmission de l’énergie. Des outils de bases concernant cette théorie sont devenus populaires et très utilisés.En pratique, les facteurs de participation représentent un exemple de ces outils, utilisés depuis longtemps. Ils ont été proposés par (Perez-Arriaga et al., 1982). Le but des facte

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Silva, João Eduardo Maeda Moreira da. "Estimação de parâmetros de modelos compartimentais para tomografia por emissão de pósitrons." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-17082010-131206/.

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O presente trabalho possui como metas o estudo, simulação, identificação de parâmetros e comparação estatística de modelos compartimentais utilizados em tomografia por emissão de pósitrons (PET). Para tanto, propõe-se utilizar a metodologia de equações de sensibilidade e o método de Levenberg-Marquardt para a tarefa de estimação de parâmetros característicos das equações diferenciais descritoras dos referidos sistemas. Para comparação entre modelos, foi empregado o critério de informação de Akaike. São consideradas três estruturas compartimentais compostas, respectivamente, por dois compartime

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Solís, Maikol. "Conditional covariance estimation for dimension reduction and sensivity analysis." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2354/.

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Cette thèse se concentre autour du problème de l'estimation de matrices de covariance conditionnelles et ses applications, en particulier sur la réduction de dimension et l'analyse de sensibilités. Dans le Chapitre 2 nous plaçons dans un modèle d'observation de type régression en grande dimension pour lequel nous souhaitons utiliser une méthodologie de type régression inverse par tranches. L'utilisation d'un opérateur fonctionnel, nous permettra d'appliquer une décomposition de Taylor autour d'un estimateur préliminaire de la densité jointe. Nous prouverons deux choses : notre estimateur est a

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Oudshoorn, Adrien. "Contribution à l'optimisation des structures mécaniques sous contraintes : l'optimisation de la conception d'avant-projet : application aux structures de véhicules de transport guidés." Valenciennes, 1994. https://ged.uphf.fr/nuxeo/site/esupversions/bf8407f4-a1d8-4b9b-bfa0-bdbd0dd4fafe.

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Le problème de conception d'avant-projet des structures mécaniques complexes soumis au double impératif de qualité et de rapidité est de plus en plus difficile à appréhender. Il offre un terrain très favorable à la synthèse automatique par le biais de l'optimisation mathématique. Fort de ce constat, nous étudions le potentiel d'utilisation de l'optimisation mathématique dans la phase de conception d'avant-projet. Notre étude se décompose en deux étapes: l'élaboration d'un outil informatique adapté et son exploitation dans le contexte de la conception d'avant-projet des structures de véhicules

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Meesala, Vamsi Chandra. "Modeling and Analysis of a Cantilever Beam Tip Mass System." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83378.

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We model the nonlinear dynamics of a cantilever beam with tip mass system subjected to different excitation and exploit the nonlinear behavior to perform sensitivity analysis and propose a parameter identification scheme for nonlinear piezoelectric coefficients. First, the distributed parameter governing equations taking into consideration the nonlinear boundary conditions of a cantilever beam with a tip mass subjected to principal parametric excitation are developed using generalized Hamilton's principle. Using a Galerkin's discretization scheme, the discretized equation for the first mode i

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Krajčovič, Ján. "Zpětná analýza sypané přehradní hráze a predikce jejího chování při mimořádných zatěžovacích stavech." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391964.

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Diplomová práce představuje vytvoření softwarového 2D MKP modelu přehrady Slezská Harta v České Republice za pomoci softwaru PLAXIS 2D. V úvodu práce je analýza vodní nádrže, vytvořené jako zásobárna vody a protipovodňové dílo. Analýza sleduje geomorfologii, geologii, konstrukci tělesa hráze, použité materiály a metody, a stávající monitorovací zařízení. Pro pochopení tvorby 2D MKP modelu jsou předloženy a definované metody použitých analýz - metoda konečných prvků, analýza prosakování, materiálové modely, citlivostná analýza. Následně byla definována tvorba struktury modelu - určení posloupno

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Akkari, Nissrine. "Etude mathématique de la sensibilité POD (Proper orthogonal decomposition)." Phd thesis, Université de La Rochelle, 2012. http://tel.archives-ouvertes.fr/tel-01066073.

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Dans cette thèse, nous nous sommes intéressés à l'étude mathématique de la sensibilité paramétrique de la méthode de réduction de modèles par projection connue sous le nom de POD pour Proper Orthogonal Decomposition. Dans beaucoup d'applications de la mécanique des fluides,la base de projection (base POD) calculée à un paramètre caractéristique fixe du problème de Navier-Stokes, est utilisée à la suite pour construire des modèles d'ordre réduit ROM-POD pour d'autres valeurs du paramètre caractéristique. Alors, la prédiction du comportement de ce ROM-POD vis-à-vis du problème initial est devenu

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Susetyo, Budi. "Modélisation de l'impédance harmonique de charges agrégées." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0027.

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Les applications de l’électronique de puissance contribuent à la pollution harmonique des réseaux électriques. Pour estimer le niveau de distorsion de tension, les différents composants du réseau doivent être modélisés en régime harmonique, en particulier les charges consommatrices, industrielles, commerciales et domestiques. L’étude concerne la modélisation de l’impédance harmonique des charges qui peuvent être séparées en deux grandes catégories: les charges passives et les charges dites actives qui réalisent une conversion d’énergie électromécanique. Les modèles disponibles pour les charges

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41

Rousseau, Marie. "Propagation d'incertitudes et analyse de sensibilité pour la modélisation de l'infiltration et de l'érosion." Phd thesis, Université Paris-Est, 2012. http://pastel.archives-ouvertes.fr/pastel-00788360.

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Nous étudions la propagation et la quantification d'incertitudes paramétriques au travers de modèles hydrologiques pour la simulation des processus d'infiltration et d'érosion en présence de pluie et/ou de ruissellement. Les paramètres incertains sont décrits dans un cadre probabiliste comme des variables aléatoires indépendantes dont la fonction de densité de probabilité est connue. Cette modélisation probabiliste s'appuie sur une revue bibliographique permettant de cerner les plages de variations des paramètres. L'analyse statistique se fait par échantillonage Monte Carlo et par développemen

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Hejtmánek, Petr. "Vliv aerodynamických parametrů na jízdní vlastnosti vozidel." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-234180.

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The main aim of this dissertation was to develop a computational tool capable of evaluating the influence of aerodynamics on the handling of a vehicle. The methodology it uses is based on the simulation of driving manoeuvres with a single-track model of a vehicle, which was composed with an emphasis on minimizing the amount of necessary input parameters. This simple model, which allows the assessment of the influence of aerodynamics on vehicle dynamic and static driveability, therefore doesn’t require large amount of input data, which makes the acquirement of relevant values easier. The comput

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Castellanos, Silva Abraham. "Compensation adaptative par feedback pour le contrôle actif de vibrations en présence d’incertitudes sur les paramètres du procédé." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT050/document.

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Dans cette thèse, nous proposons des solutions pour la conception de systèmes de contrôle actif de vibration robustes (AVC). Le manuscrit de thèse comporte deux grandes parties.Dans la première, les problèmes d'incertitude paramétrique dans les systèmes de contrôle actif de vibration sont étudiés. En plus des incertitudes sur la fréquence des perturbations, nous avons trouvé que la présence de zéros complexes peu amortis soulevait des problèmes de conception difficiles, même pour des systèmes et des modèles parfaitement connus. Dans ce contexte, nous avons proposé des solutions pour le problèm

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Monnanni, Andrea. "Ponti a cassone monocellulare in c.a.p.: sviluppi analitici, modelli numerici, analisi di sensitività e studio parametrico." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Il calcolo delle sollecitazioni negli impalcati a cassone monocellulare è abbastanza semplice qualora si utilizzi un programma di calcolo, ma è assai più complesso capire i meccanismi fisici con cui si sviluppano. Infatti, questi impalcati sono dotati di diaframmi di irrigidimento solamente in corrispondenza delle spalle e delle pile. L’assenza dei diaframmi in campata non consente di ritenere queste sezioni trasversalmente rigide, come richiesto dalla teoria classica di DSV. Quindi si rende necessario considerare deformabile la sezione nel proprio piano e considerare tutti gli effetti prodott

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Saleh, Marwan. "Étude mathématique et numérique des méthodes de réduction dimensionnelle de type POD et PGD." Thesis, La Rochelle, 2015. http://www.theses.fr/2015LAROS004/document.

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Ce mémoire de thèse est formé de quatre chapitres. Un premier chapitre présente les différentes notions et outils mathématiques utilisés dans le corps de la thèse ainsi qu’une description des résultats principaux que nous avons obtenus. Le second chapitre présente une généralisation d’un résultat obtenu par Rousselet-Chénais en 1990 qui décrit la sensibilité des sous-espaces propres d’opérateurs compacts auto-adjoints. Rousselet-Chénais se sont limités aux sous-espaces propres de dimension 1 et nous avons étendu leur résultat aux dimensions supérieures. Nous avons appliqué nos résultats à la D

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46

Salvà, Gagliolo Giuseppe. "Simulazione energetica di un edificio passivo: valutazione del performance gap determinato dal comportamento dell'utente e dalla qualità costruttiva." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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Simulazione parametrica su di un edificio passivo a S. Mauro Pascoli (FC), con valutazione di quanto l'incidenza dell'utente e della correttezza costruttiva possano incidere sulla reale prestazione dell'edificio, quindi il concetto di performance gap.

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Romano, Marisa. "Analisi della sensitività delle politiche manutentive al variare del grado di conoscenza dei parametri operativi dei componenti." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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In ambito aziendale, la manutenzione degli impianti gioca un ruolo strategico, risulta quindi necessario dedicare tempo e risorse alla corretta pianificazione degli interventi manutentivi. L'obiettivo principale è infatti quello di minimizzare gli intervalli di fermo, in quanto il verificarsi di un guasto tendenzialmente causa costi operativi più elevati e produce beni meno competitivi. Visto il ruolo fondamentale assunto dalla manutenzione, il presente elaborato ha l'obiettivo di studiare la sensitività delle politiche preventive, al variare del grado di conoscenza di una serie di parametri

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Corne, Adrien. "Current Sensorless Control Strategies for an Automotive Electric Powertrain." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0292.

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L’application de quotas d’émissions de gaz à effet de serre a amené les constructeurs automobiles à augmenter le niveau d’électrification de leurs véhicules. En parallèle des véhicules tout électrique, se sont développées les solutions hybrides, tel le mild-hybrid autorisant l’association d’une chaîne de traction électrique avec le moteur à combustion dans le but d’absorber les pics de consommation de carburant. Afin de rester compétitif, les coûts de production d’un véhicule doivent être optimisés autant que possible, ainsi l’étude réalisée de commande de machine synchrone à griffes sans capt

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Stenvall, Brita. "Känslighets- och osäkerhetsanalys av parametrar och indata i dagvatten- och recipientmodellen StormTac." Thesis, Uppsala University, Department of Earth Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88864.

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<p>Three methods of sensitivity and unceartainty analysis have been applied to the operative stormwater- and recipient model StormTac. The study area is the watershed of lake Flaten in the municipality Salem. StormTac’s submodels for stormwater, pollutant transport and the recipient are cosidired. In the sensitivity assessment, the model parametres and inputs were varied one at a time by a constant percentage according to the “one at a time” (OAAT) method and the response of the outputs were calculated. It was found that the stormwater- and baseflow were most sensitive to perturbations in the

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Šeliga, Ladislav. "Vysokonapěťové součástky v moderních bipolárních technologiích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221014.

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Tato práce se zabývá popisem základních vlastností LDMOS tranzistorů. V první části práce jsou rozebrány vlastnosti LDMOS tranzistorů, jejich základní parametry a techniky pro vylepšení parametrů těchto tranzistorů. V další části je rozebrána spolehlivost LDMOS tranzistorů, tato část popisuje bezpečnou pracovní oblast (SOA), injekci horkých nosičů (HCI) a negativní teplotní stabilitu (NBTI). Poslední teoretická část popisuje používané modely pro simulaci ESD událostí. Praktická část práce je zaměřena na simulaci základních parametrů PLDMOS a NLDMOS tranzistorů, porovnání simulovaných a změřený

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