Dissertations / Theses: 'LWR models'

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Ježková, Jitka. "Modelování dopravního toku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232180.

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Tato diplomová práce prezentuje problematiku dopravního toku a jeho modelování. Zabývá se především několika LWR modely, které následně rozebírá a hledá řešení pro počáteční úlohy. Ukazuje se, že ne pro všechny počáteční úlohy lze řešení definovat na celém prostoru, ale jen v určitém okolí počáteční křivky. Proto je dále odvozena metoda výpočtu velikosti tohoto okolí a to nejen zcela obecně, ale i pro dané modely. Teoretický rozbor LWR modelů a řešení počátečních úloh jsou demonstrovány několika příklady, které zřetelně ukazují, jak se dopravní tok simulovaný danými modely chová.

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Grundmann, Ulrich, Ulrich Rohde, Siegfried Mittag, and Sören Kliem. "DYN3D version 3.2 - code for calculation of transients in light water reactors (LWR) with hexagonal or quadratic fuel elements - description of models and methods -." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-28604.

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DYN3D is an best estimate advanced code for the three-dimensional simulation of steady-states and transients in light water reactor cores with quadratic and hexagonal fuel assemblies. Burnup and poison-dynamic calculations can be performed. For the investigation of wide range transients, DYN3D is coupled with system codes as ATHLET and RELAP5. The neutron kinetic model is based on the solution of the three-dimensional two-group neutron diffusion equation by nodal expansion methods. The thermal-hydraulics comprises a one- or two-phase coolant flow model on the basis of four differential balance equations for mass, energy and momentum of the two-phase mixture and the mass balance for the vapour phase. Various cross section libraries are linked with DYN3D. Systematic code validation is performed by FZR and independent organizations.

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Grundmann, Ulrich, Ulrich Rohde, Siegfried Mittag, and Sören Kliem. "DYN3D version 3.2 - code for calculation of transients in light water reactors (LWR) with hexagonal or quadratic fuel elements - description of models and methods -." Forschungszentrum Rossendorf, 2005. https://hzdr.qucosa.de/id/qucosa%3A21687.

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DYN3D is an best estimate advanced code for the three-dimensional simulation of steady-states and transients in light water reactor cores with quadratic and hexagonal fuel assemblies. Burnup and poison-dynamic calculations can be performed. For the investigation of wide range transients, DYN3D is coupled with system codes as ATHLET and RELAP5. The neutron kinetic model is based on the solution of the three-dimensional two-group neutron diffusion equation by nodal expansion methods. The thermal-hydraulics comprises a one- or two-phase coolant flow model on the basis of four differential balance equations for mass, energy and momentum of the two-phase mixture and the mass balance for the vapour phase. Various cross section libraries are linked with DYN3D. Systematic code validation is performed by FZR and independent organizations.

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Formánek, Martin. "Výukový model pro mechatroniku: vývoj modelu a rychlé komunikace pomocí USB." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417789.

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Táto diplomová práca sa zaoberá návrhom a realizáciou výukového modelu pre študentov mechatroniky na vysokej škole. Úvod práce sa zaoberá krátkym uvedením do problematiky používania univerzálnej sériovej zbernice a jej implementáciou pre komunikáciu s mikrokontrolérom. Druhá časť je venovaná hardwaru zariadenia, medzi čo patrí voľba vhodného motoru, návrh vhodných elektronických komponentov, návrh dosiek plošných spojov a taktiež mechanickej konštrukcie celého zariadenia. Nasleduje softwarová časť, popisujúca praktickú realizáciu komunikácie, program v mikrokontroléry, a Toolbox, ktorý umožňuje užívateľovi jednoduchú interakciu s hardwarom a to jak z Matlabu. tak zo Simulinku. Kombinácia navrhnutých hardwarových a softwarových prvkov umožňuje jednoduchú cestu k zlepšeniu vedomostí študentov v oblastiach programovania, riadenia a modelovaní sústav. Pre tieto účely je práca rozšírená o pracovný list, ktorý dopĺňa navrhnuté zariadenie o sadu experimentálnych úloh, zameraných na vybrané mechatronické problémy.

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Gasik, Kevin Richard. "COMPARISON OF LQR AND LQR-MRAC FOR LINEAR TRACTOR-TRAILER MODEL." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2117.

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The United States trucking industry is immense. Employing over three million drivers and traveling to every city in the country. Semi-Trucks travel millions of miles each week and encompass roads that civilians travel on. These vehicles should be safe and allow efficient travel for all. Autonomous vehicles have been discussed in controls for many decades. Now fleets of autonomous vehicles are beginning their integration into society. The ability to create an autonomous system requires domain and system specific knowledge. Approaches to implement a fully autonomous vehicle have been developed using different techniques in control systems such as Kalman Filters, Neural Networks, Model Predictive Control, and Adaptive Control. However some of these control techniques require superb models, immense computing power, and terabytes of storage. One way to circumvent these issues is by the use of an adaptive control scheme. Adaptive control systems allow for an existing control system to self-tune its performance for unknown variables i.e. when an environment changes. In this thesis a LQR error state control system is derived and shown to maintain a magnitude of 15 cm of steady state error from the center-line of the road. In addition a proposed LQR-MRAC controller is used to test the robustness of a lane-keeping control system. The LQR-MRAC controller was able to improve its transient response peak error from the center-line of the road of the tractor and the trailer by 9.47 [cm] and 7.27 [cm]. The LQR-MRAC controller increased tractor steady state error by 0.4 [cm] and decreased trailer steady state error by 1 [cm]. The LQR-MRAC controller was able to outperform modern control techniques and can be used to improve the response of the tractor-trailer system to handle mass changes in its environment.

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Bergersen, Bjørnar Dolva. "Numerical Solutions of Traffic Flow on Networks : Using the LWR-Model and the Godunov Scheme." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for matematiske fag, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25103.

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This paper shows how to create a simulationtool for traffic flow in a network using the Lighthill--Witham--Richards model and the Godunov scheme. First some basic rules about conservation laws are described and how to solve them using the method characteristics. This leads to the notion of weak solutions which can be solved by shock- and rarefractions-solutions. This is then used to describe how traffic behaves on a single road by using the LWR-model. The behavior of traffic at junctions is discussed, more specifically how to find the maximum flux through a junction when we deal with different amount of incoming and outgoing roads. The paper gives different examples of numerical solution methods to conservation laws, which gives motivation for the Godunov scheme. A numerical scheme using the LWR-model and the Godunov scheme is tested on different traffic models. The main test is a simplified model of Trondheim, Norway. The results are presented in videos, as well as graphs and tables that show the duration of the driving time through different routes of the model.

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Viswanathan, Vishnu. "Improving the dynamical model of the Moon using lunar laser ranging (LLR) and spacecraft data." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEO005/document.

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L'objectif principal de ce travail était d'améliorer le modèle dynamique de la Lune dans les éphémérides numériques INPOP et d’exploiter cette amélioration en vu d’une meilleure caractérisation de la structure interne de la Lune et d’effectuer des tests de la relativité générale. Dans un premier temps, un travail d’analyse des algorithmes nécessaires aux calculs des points normaux utilisés pour la construction des éphémérides lunaire a été effectué. Une analyse approfondie des procédures utilisées par l’équipe de Grasse montre l'impact du choix de l’algorithme sur le calcul de l'incertitude. L'importance de l'incertitude du point normal se reflète dans la méthode du moindre carré pondéré utilisée pour la construction des éphémérides. En particulier, l'absence d'un algorithme standardisé entre les différentes stations LLR introduit des biais dans l’estimation des incertitudes qu’il est important de prendre en compte. La thèse a également bénéficié d'un ensemble de données plus dense en raison des améliorations techniques et du passage de la longueur d'onde à l'infrarouge à la station de Grasse (Courde et al., 2017). Dans un second temps, afin de permettre des analyses multi-techniques combinant mesures SLR et LLR, la réduction des observations LLR a été introduite dans le logiciel de détermination d'orbites GINS du CNES. La modélisation suit les recommandations de IERS et été validée par une comparaison étape par étape avec les groupes d'analyse LLR de l’Observatoire de Paris et à Hanovre avec une précision de l’ordre de 1 mm. En outre, la correction des effets due au chargement hydrologique observé à la station Grasse a été mise en œuvre et a fait l’objet d’une première communication poster en 2016 (Mémin et al. 2016). Une version améliorée du modèle de réduction LLR a été intégrée à la dernière version distribuée du logiciel GINS par l’équipe de géodésie spatiale (GRGS) du CNES.Le modèle dynamique lunaire d’INPOP a d'abord été développé par Manche (2011). Cependant, en raison de l'absence du noyau fluide dans la version précédente (INPOP13c), les résidus obtenus après ajustement étaient au niveau de 5 cm pour la période moderne (2006). Une comparaison détaillée des équations dynamiques avec les éphémérides JPL DE430 a permis d'identifier les changements requis dans INPOP pour l'activation du noyau liquide lunaire. D'autres modifications ont permis l'utilisation d'un champ de gravité lunaire déterminé par la mission spatiale GRAIL. L'utilisation d'un algorithme de moindres carrés sous contraintes a aussi été utilisé afin de maintenir les paramètres connus dans des bornes compatibles avec leurs incertitudes. La nouvelle éphéméride (INPOP17a) produit un résidu de 1,4 à 1,8 cm, compatible avec (Folkner et al. 2014) et (Pavlov et al. 2016). INPOP17a est distribuée sur le site de l’imcce (www.imcce.fr/inpop) et une documentation a été publiée (Viswanathan et al. 2017) dans les notes scientifiques de l’imcce.En outre, en fournissant des contraintes plus sévères dans le modèle dynamique sur le champ de gravité lunaire à partir de l'analyse des données GRAIL, une signature caractéristique de libration lunaire avec une période de 6 ans a été révélée avec une amplitude de +/- 5 mm. Plusieurs pistes ont été étudiées pour l'identification de cet effet, impliquant des termes de marée et des composants de couple à plus haut degré. Cela reste encore un travail en cours, qui se poursuivra grâce à un contrat postdoctoral à Paris. Une publication est en cours de révision à ce sujet.Les résidus au niveau d'un centimètre permettent des tests précis du principe d'équivalence dans le système solaire. La valeur ajustée du paramètre caractérisant l'accélération différentielle de la Terre et de la Lune vers le Soleil a été obtenue et les résultats sont conformes aux travaux antérieurs (Williams et al 2012, Hofmann et al. 2016). Une interprétation en terme de théorie du dilaton est proposée. Une publication est en cours de finalisation
The main goal of the Ph.D. thesis of Vishnu Viswanathan was to improve the dynamical model of the Moon within the numerically integrated ephemeris (INPOP) and to derive results of scientific value from this improvement through the characterization of the lunar internal structure and tests of general relativity.At first, raw binaries of LLR echoes obtained from the Grasse ILRS station was used to analyze the algorithm used by the facility, for the computation of a normal point from the full-rate data. Further analysis shows the dependence of the algorithm on the reported uncertainty contained within the distributed LLR normal points from Grasse. The importance of the normal point uncertainty is reflected in the weighted least square procedure used for parameter estimation, especially in the absence of a standardized algorithm between different LLR ground stations. The thesis also benefitted in terms of a more dense dataset due to technical improvements and the switch of operational wavelength to infrared at the Grasse LLR facility (Courde et al. 2017).The reduction of the LLR observations was carried out on GINS orbit determination software from CNES. The modeling follows the IERS 2010 recommendations for the correction of all known effects on the light-time computation. The subroutines were verified through a step by step comparison study using simulated data, with LLR analysis groups in Paris and Hannover, maintaining any discrepancies in the Earth-Moon distance below 1mm. Additionally, correction of effects due to hydrological loading observed at the Grasse station has been implemented. An improved version of the LLR reduction model was submitted to the space geodesy team of CNES (GRGS).The lunar dynamical model of INPOP was first developed by Manche (2011). However, due to the absence of the fluid core within the previous version of INPOP (13c), the residuals obtained after a least-square fit were in the level of 5cm for the modern day period (2006 onwards). A detailed comparison of the dynamical equations with DE430 JPL ephemeris helped to identify required changes within INPOP for the activation of the lunar fluid core. Other modifications allowed the use of a spacecraft determined lunar gravity field within the dynamical model. The use of a bounded value least square algorithm during the regression procedure accounted for variability to well-known parameters from their reported uncertainties. The resulting iteratively fit solution of INPOP ephemeris then produces a residual of 1.4-1.8 cm, on par with that reported by Folkner et al. 2014 and Pavlov et al. 2016. The new INPOP ephemeris (INPOP17a) is distributed through the IMCCE website (www.imcce.fr/inpop) with a published documentation (Viswanathan et al. 2017) in the scientific notes of IMCCE.Furthermore, on providing tighter constraints on the lunar gravity field from GRAIL-data analysis within the dynamical model, a characteristic lunar libration signature with a period of 6 years was revealed with an amplitude of +/- 5mm. Several tracks were investigated for the identification of the unmodelled effect, involving higher degree tidal terms and torque components. This remains as a work in progress, which will be continued through a postdoctoral contract in Paris. A publication is under revision on this subject.Residuals at the level of a centimeter allow precision tests of the principle of equivalence in the solar system. The fitted value of the parameter characterizing the differential acceleration of the Earth and the Moon towards the Sun was obtained with numerically integrated partial derivatives. The results are consistent with the previous work by Williams et al (2009, 2012), and Hofmann et al. (2010, 2016). An article on this work is in preparation

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Krampoťák, Štefan. "Model dopravních situací." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219706.

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This master thesis deals with analyze of camera system in real traffic, using these system and realization of traffic situation model. Result of this work is fully functional model of traffic situation, which shows the capability of these camera systems in real traffic. It consists of two basic parts, the first is physical model of traffic with semaphore and second part is control program with algorithm for detection of traffic offences. The system contains speed measurement and red light violation. Model has capable of control the speed of cars, control semaphores and configure cameras.

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Sardinha, Anna Luiza Barszczak. "Contribuição para um modelo de circulação do LCR na cabeça." Master's thesis, FCT - UNL, 2008. http://hdl.handle.net/10362/2292.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do Grau de Mestre em Engenharia Biomédica
A circulação do líquido cefaloraquidiano (LCR) é de extrema importância para a compreensão de patologias importantes como a Hidrocefalia de Pressão Normal(HPN), que é causada por um desequilíbrio entre a produção e a absorção do LCR. É portanto fundamental o desenvolvimento de um modelo que abranja todo o sistema do LCR de maneira a melhorar o conhecimento do sistema e permitir tratamentos mais eficazes. A quantificação de parâmetros de fluxo de LCR medidos no aqueduto de Sylvius tem sido utilizada para indicar se o paciente sofre de HPN. Há quem defenda que valores de fluxo total (FT) superiores a 18 ml/min indicam HPN, há quem defenda que valores de volume bidireccional médio (VBM) superiores a 42 μl justificam a terapia por derivação ventricular, levando a potenciais diagnósticos contraditórios. Neste estudo pretendemos contribuir para um modelo de circulação do LCR acrescentando dados obtidos na charneira da base do crânio, para estudarmos a dinâmica de circulação no interior da caixa craniana. Como se assume que o LCR seja produzido principalmente no plexo coroideu dos ventrículos laterais e absorvido nas granulações aracnoideias, podemos verificar a quantidade de LCR que flui dentro do cérebro entre o terceiro e quarto ventrículos, no aqueduto de Sylvius, e a quantidade de LCR que flui para o espaço subaracnoideu craniano e raquidiano na charneira da base do crânio, verificando o comportamento dinâmico dos parâmetros de circulação e da onda de propagação de fluxo, controlada pelo fluxo sanguíneo que entra no crânio. Estes exames quantitativos foram obtidos com a técnica de contraste de fase, PC-MRI por Ressonância Magnética que permite uma quantificação do fluxo durante um ciclo cardíaco in vivo e sem perturbação do sistema. Verificamos que tanto o VBM como o FT diminuem com o aumento do ritmo cardíaco, diminuindo mais drasticamente o VBM do que o FT e que o pico da sistole e da diástole se aproximam com esse aumento cardíaco. Foram feitas duas medições em regiões de interesse diferentes para a charneira da base do crânio devido à dificuldade de rodear o espaço subaracnoideu exteriormente e interiormente. O resultado para a medição em redor do espaço subaracnoideu mostrou-se mais concordante com os valores adquiridos no aqueduto de Sylvius. Verificamos também que os parâmetros de circulação estão correlacionados com a área do aqueduto de Sylvius, necessitando esta relação de ser mais aprofundada em estudos futuros.

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Bathelt, Regina Ehlers. "Ensaios para um modo de ler modelos didático-teóricos em educação matemática : um estudo sobre a ótica do modelo dos campos semânticos /." Rio Claro, 2018. http://hdl.handle.net/11449/157380.

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Orientador: Romulo Campos Lins
Orientador: Heloisa da Silva
Banca: João Ricardo Viola dos Santos
Banca: Jorge Tarcísio da Rocha Falcão
Banca: Marcus Vinicius Maltempi
Banca: Regina Luzia Corio de Buriasco
Resumo: Este estudo encontra sua justificação no cenário mais amplo de uma pesquisa bibliográfica sobre teorias de educação matemática como as postuladas em Lins, Freudenthal, Davidov, Brosseau, etc., no qual procuramos por desenvolvimento teórico na perspectiva do Modelo dos Campos Semânticos (LINS, 1999, 2004, 2008, 2012), a propósito de gerar meios a caracterizar "ação didática" quando fundamentada em diferentes teorias de educação matemática. A intenção é alcançar dizer de modelo didático a partir do ponto de vista teórico de diferentes constructos de educação matemática. Neste largo cenário, a ideia de caracterizar "ação didática" em diferentes teorias para então oferecer delas uma leitura em paralelo, nos trouxe diante de uma questão central que a precede: a de buscar uma forma de abordar diferença para tecer um contexto em que "ação didática" no escopo de uma teoria não fosse lida por falta no escopo de outra, nem em discursos sobre "melhoria" do ensino de matemática. Este foi o objetivo central desta tese que se caracteriza, então, na produção de um conjunto de ensaios em cuja forma buscamos abordar diferença como experiência necessária e anterior para um modo de ler modelos didático-teóricos e dizer de "ação didática" em educação matemática. Neste intento, a teoria epistemológica do conhecimento elaborada por Romulo Campos Lins, o Modelo dos Campos Semânticos (MCS), comparece tanto como metodologia de pesquisa à produção da forma dos ensaios, quanto como uma das teorias de e... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This study finds its justification in the broader scenario of one bibliographical research on mathematical education theories such as those postulated by Lins, Freudenthal, Davidov, Brosseau, etc. In it, we seek theoretical development from the perspective of the Model of Semantic Fields (LINS, 1999, 2004, 2008, 2012) in order to generate means to characterize "didactical action" when based on different theories of mathematical education. The intention is to talk about a didactical model from theoretical points of view of mathematical education constructs. In this scenario, the idea of characterizing "didactical action" in different theories, to offer from them a parallel reading, brought us to a central question that precedes it. The question is to seek a way of approaching difference to produce a context in which "didactical action", in the scope of one theory, would not be read in the scope of another one through a deficit reading and nor in discourses on "improvement" of mathematics teaching. This was the central aim of this dissertation. It is characterized as a cluster essays production, in which form we search a way of approaching difference as a necessary and previous experience to a mean of reading "didactical action" and saying of didactical models in mathematical education. In this attempt, the epistemological theory of knowledge elaborated by Romulo Campos Lins, the Model of Semantic Fields, appears on one side, as a research methodology to the production of the e... (Complete abstract click electronic access below)
Resumen: Este estudio encuentra su justificación en el escenario más amplio de una investigación bibliográfica sobre teorías de educación matemática como las postuladas en Lins, Freudenthal, Davidov, Brosseau, etc., en el cual buscamos por desarrollo teórico en la perspectiva del Modelo de los Campos Semánticos (LINS, 1999, 2004, 2008, 2012), a propósito de generar medios para caracterizar "acción didáctica" cuando está fundamentada en diferentes teorías de educación matemática. La intención es llegar a decir de modelo didáctico desde el punto de vista teórico de diferentes constructos de educación matemática. En este escenario, la idea de caracterizar "acción didáctica" en diferentes teorías para entonces ofrecer de ellas una lectura en paralelo, nos trajo ante una cuestión central que la precede: la de buscar una forma de abordar diferencia para tejer un contexto en que "acción "didáctica" en el alcance de una teoría no fuera leída por falta en el ámbito de otra, ni en discursos sobre "mejora" de la enseñanza de matemáticas. Este fue el objetivo central de esta tesis que se caracteriza entonces, en la producción de un conjunto de ensayos en cuya forma busco abordar diferencia como experiencia necesaria y anterior para un modo de leer "acción didáctica" y decir de modelos didácticos en educación matemática. En este intento, la teoría epistemológica del conocimiento elaborada por Romulo Campos Lins, el Modelo de los Campos Semánticos (MCS), aparece tanto como metodología de investigac... (Resumen completo clicar acceso eletrônico abajo)
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Joo, Nathalie. "Schematerapeuters arbete med modes : Hur arbetar de med modes och vad lär modesmodellen deras patienter?" Thesis, Linnéuniversitetet, Institutionen för psykologi (PSY), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-62089.

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I studien undersöktes schematerapeuters arbete med modes, vilket är ett begrepp som utvecklats för att klassificera dimensionella tillstånd av vår personlighet. Syftet var att få en djup bild av hur terapeuterna använder sig av modesmodellen samt hur de anser att den kommer patienten till nytta. Dessutom har studien syftat till att ta reda på hur terapeuterna använder sig av sina egna modes i terapirummet och vilka fallgropar det finns i modellen. En kvalitativ, semistrukturerad metod användes och fem certifierade schematerapeuter intervjuades. Datan är analyserad utifrån en tematisk analys med fyra teman, vilka är terapeutens användningsområde av modes, modellens funktionalitet för patienten, terapeutens modes och fallgropar. I resultatet rörande terapeutens användningsområde av modes framkom att terapeuterna arbetar med modes utifrån två huvudinriktningar. Dels använder de sig av modes som förståelsemodell för att få en tydlig bild av patienten och sig själva i terapin, samt att de integrerar patienten i arbetet kring modes. Vad gäller temat om modellens funktionalitet för patienten framkom två kategorier, nytt synsätt och struktur. Terapeuterna ansåg att patienterna lärde sig ett nytt synsätt och att modellen gav struktur. I underkategorierna framkom att patienterna fick en flerdimensionell syn på sig själva, att modellen erbjöd dem alternativ, dämpade deras inre kritiker och lärde dem att se när de blev ”kidnappade” av ett mode. Terapeuterna ansåg också att patienterna hade mycket lätt att ta till sig modesmodellen, att den kunde hjälpa patienter även med enklare problematik och att den kunde vara till hjälp för att patienterna skulle få tillgång till sin sårbara sida. Under temat schematerapeuters egna modes framkom två kategorier, hur de använder sig av sina egna modes och vilka av deras egna modes som kan påverka terapin negativt. Resultatet visade att terapeuter använder sina egna modes genom att analysera dem i terapisamtalet, att de använde sin egen sårbarhet för att skapa kontakt med patienten samt för att avgöra vilket mode patienten befann sig i. De modes som de kunde hamna i som var negativa för patienten var dysfunktionella copingmodes och dysfunktionella internaliserade föräldermodes. Temat fallgrop visade att det kan vara svårt att skilja modes ifrån varandra.

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Ramos, Jerónima Isidora Rosado Alexandrino. "Compreender para ler. Ler para compreender: contributo de estratégias metacognitivas monitorizadas de forma directa e explicita no ensino da compreensão leitora." Master's thesis, Universidade de Évora, 2004. http://hdl.handle.net/10174/15047.

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A sociedade dos nossos dias exige dos cidadãos um elevado potencial cognitivo e metacognitivo, do qual a realidade escolar se deve aproximar, estimulando o desenvolvimento das necessárias competências e atitudes. Este estudo centra-se no processo de ensino/aprendizagem da compreensão leitora e procura investigar até que ponto uma abordagem de incidência metacognitiva, mediante estratégias monitorizadas de forma explícita e directa promovem nos alunos uma aprendizagem mais significativa, tornando-os leitores mais eficazes em termos de compreensão. O corpo do trabalho é constituído por duas componentes diferenciadas, mas que interagem em busca da necessária complementaridade: - uma componente teórica que procura reunir os conceitos fundamentais que as vertentes epistemológica, psicológica, pedagógica e metodológica integram, no sentido de conferir ao ensino/aprendizagem da compreensão leitora a coerência e a qualidade tão reclamadas; - uma componente empírica que visa investigar no campo, em contexto educativo, os princípios e referenciais teóricos; esta componente foi desenvolvida na Escola Básica 1 da Vista Alegre de Évora, com os alunos de uma turma do 2° ano de escolaridade e no âmbito da disciplina da Língua Portuguesa (compreensão leitora). Na tentativa de obter um conhecimento mais profundo do complexo fenómeno que é a educação recorreu-se, nesta investigação, ao contributo complementar dos procedimentos quantitativo e qualitativo (registos recolhidos ao longo da intervenção). Na vertente quantitativa, optou-se por um desenho quasi - experimental com grupo de controlo não equivalente. O desenho empírico envolveu uma turma e a professora – investigadora. Dois grupos funcionaram como grupos experimentais e um como grupo de controlo. Os resultados obtidos apontam para alguma vantagem final para os grupos experimentais, no que respeita à mudança no domínio em estudo: compreensão / leitora. Os dados obtidos apontam para que a compreensão leitora possa ser "ensinada" e "aprendida" através de práticas como as levadas a cabo durante o período da intervenção desta investigação. De facto a comparação e análise dos resultados dos pré e pós testes apontam para ganhos significativos dos sujeitos dos grupos E1 e E2 relativamente ao grupo de controlo. O desenvolvimento de estratégias e procedimentos de tratamento da informação parece ser um resultado das práticas seleccionadas para o processo de intervenção contemplado neste estudo. Finalmente, da análise de dados colhidos não nos parece poder destacar em relação a outros, nenhum dos habituais processos de tratamento de informação. /*** Abstract - Our society demands from all citizens a high cognitive and metacognitive potential, to which school reality must contribute by stimulating and enhancing the development of the necessary abilities and. attitudes. This study is centered in the process of reading comprehension and trios to investigate how far tasks of metacognitive incident organized in strategies explicitly and directly monitorized promote more significant comprehension processes in. reading. The body of the work is shaped in two different components, which interact searching the necessary complementarities: one is the theoretical framework in which we try to congregate the fundamental concepts which shape the epistemological, psychological, pedagogical and methodological sources interacting in reading comprehension education to provide it with the necessary coherence and quality; the other is the empiricist component which aims to display a research apparatus necessary to verify some of the assumptions placed on the theoretical field. This second component was developed in. Basic School 1 da Vista Alegre in. Évora. The subjects were 21 2 nd year students. This study was planned as experimental, having the independent variable - reading comprehension - manipulated so as to introduce differences between a control group and two experimental groups. The groups were made equivalent by random allocation. Dependent variable was manipulated by means of a period of intervention with experimental groups, in which comprehension strategies were taught. Changes in the dependent variable were detected by use of pre-test and post-test. Differences between groups in scores on the post-test were compared using an analysis of variance. Aiming to get a deeper knowledge of the complex educational phenomena, qualitative procedures were used too. Some final advantage for the experimental groups demonstrates that reading comprehension can be taught in class and learned by 2nd year students. The results rule out the possibility of identifying the best procedures in reading comprehension instruction Changes in the dependent variable were detected by use of pre-test and posttest. Differences between groups in scores on the post-test were compared using an analysis of variance. Aiming to get a deeper knowledge of the complex educational phenomena, qualitative procedures were used too. Some final advantage for the experimental groups demonstrates that reading comprehension can be taught in class and learned by 2nd year students. The results rule out the possibility of identifying the best procedures in reading comprehension instruction.

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13

Kouri, Drew P. "A Nonlinear Response Model for Single Nucleotide Polymorphism Detection Assays." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212598582.

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14

Leite, Sheysa Danyelle de Freitas. "Análise dos fatores de risco e do índice de exposição a LER/DORT dos trabalhadores em atividades repetitivas: estudo de caso." Universidade Federal da Paraíba, 2013. http://tede.biblioteca.ufpb.br:8080/handle/tede/5263.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The objective of this study is to analyze the influence of risk factors on exposure to WMSD workers in repetitive activities in the footwear sector. Therefore, we analyzed the data for 71 workplaces in the productive area of a shoe company which are characterized by having a defined task cycle, and had the index of exposure to WMSD upper limbs calculated through the OCRA method. Data analysis was accomplished using the exploratory data analysis of WMSD and construction of a Generalized Linear Model (GLM). This model identified the factors that influence the rate of exposure the most and made it possible to quantify the possible chance of raising this index when risk factors are present in the workplaces. The factor indicated as the most influential one was the "sudden movements" factor, the presence of this factor increases the chance of raising the level of exposure in 2.12 times more than when this factor is not present.
O objetivo deste trabalho foi analisar os fatores de risco e o índice de exposição a LER/DORT dos trabalhadores em atividades repetitivas no setor calçadista.Para tanto foram analisados dados referentes a 71 postos de trabalho da área produtiva de uma empresa calçadista que se caracterizam por possuir um ciclo de tarefa definido, e que tiveram calculados o índice de exposição a LER/DORT nos membros superiores através do método OCRA. O tratamento dos dados foi realizado através da análise exploratória dos dados de LER/DORT e da construção de um Modelo Linear Generalizado (MLG).Este modeloidentificou os fatores que mais influenciam o índice de exposição e possibilitouquantificar a chance de elevação deste índice quando os fatores de risco estão presentes nos postos de trabalho. O fator indicado como o mais influente foi o fator movimentos bruscos , a presença deste fator aumenta a chance de se elevar o índice de exposição em 2,12 vezes a mais do que quando este fator não está presente.

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15

Halpern, Melissa Dale. "The in vivo and in vitro effects of diethyldithiocarbamate on autoimmune New Zealand Black/White F₁ hybrid, MRL/Mp-lpr/lpr and related and normal murine strains." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184940.

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New Zealand Black/White F₁ hybrid (NZB/W) and MRL/Mp-lpr/lpr (MRL/lpr) mice spontaneously develop a Systemic Lupus Erythematosus-like autoimmune disease. While the primary immunologic defect in the NZB/W is due to B cells, in the MRL/lpr it is a result of T cell abnormalities. Diethyldithiocarbamate (DTC), an agent suggested to enhance T cell function, was used to treat both strains. Weekly treatment of NZB/W mice with 25 mg/kg DTC had no significant effect upon survival or autoantibody levels but did induce changes in cell surface antigen expression. MRL/lpr mice treated with DTC displayed normalization of cell surface antigen expression (particularly increased expression of Lyt-2, macrophage markers and Lyt-2⁺/L3T4⁺ thymocytes), decreased lymphoproliferation and thymic atrophy, decreased serum autoantibody levels and kidney deposition of C3 and IgM, restored responses to mitogens and significantly prolonged survival. To determine both the influence of MRL background and lpr genes and to better understand on what cell populations DTC effects, changes in cell surface antigen expression were examined in DTC treated MRL-+/+, Balb/c, and Balb/lpr strains. The only consistent similarities observed between all strains tested were DTC induced changes in Mac-1 splenocyte surface antigen expression. In vitro studies showed DTC to have variable effects upon the mitogenic responses of lymphoid cells to phytohemagluttinin, but DTC alone stimulated both MRL/lpr and Balb/lpr lymphocytes. DTC stimulated the null cell population that predominates in lpr gene-bearing mice, but all observed in vitro effects of DTC were dependent upon the adherent cell population included in culture. DTC had no apparent direct effects upon adherent cells alone however. These studies have shown that DTC is capable of positive effects upon one autoimmune murine strain, the MRL/lpr, but not the NZB/W. DTC appears to affect macrophages, but other cell populations are required to obtain full activity of this compound. The variable effects of DTC emphasize the need to define the immunopathology of individual patients with autoimmune disease before initiating treatment with immunomodulative therapy.

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16

Moraes, Anderson Tiago de. "Controle robusto para uma planta-piloto industrial utilizando técnica LQG/LTR." Instituto Tecnológico de Aeronáutica, 2015. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=3253.

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Este trabalho trata do controle robusto de uma planta-piloto industrial multivariável utilizando a técnica LQG/LTR. Essa planta, que se encontra devidamente instalada em laboratório, foi fabricada pela empresa Yokogawa, e seu modelo matemático utilizado no projeto do controlador foi obtido através da técnica de identi_cação de sistema do tipo caixa cinza, que é explanada de forma pragmática neste trabalho. O modelo representa a planta com duas variáveis de entrada e duas variáveis de saída, sendo, assim, um sistema quadrado. Busca-se fazer o controle de nível em dois tanques simultaneamente, adotando-se como requisitos de projeto barreiras de estabilidade e desempenho robustos tratáveis com a técnica LQG/LTR, não deixando de observar as limitações físicas do aparato. Após a fase de projeto, implementa-se o controlador discretizado em um PC que está interligado através de rede Ethernet/protocolo OPC com o PLC da planta. Em tempo real, o sistema controlado deve conduzir as variáveis controladas às trajetórias de referência, bem como satisfazer os requisitos de estabilidade e desempenho robusto na presença de distúrbios paramétricos.

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17

Dadashzadeh, Aidin. "Simulation model to evaluate control of balance in humanoid robots." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-246114.

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This thesis focuses on implementing a program, using Python and the symbolic package SymPy, to evaluate balancing of a humanoid robot modelled as inverted pendulums. The balancing algorithm used to evaluate the program is the feedback controller LQR. The program has successfully implemented a working LQR algorithm together with features such as underactuation and a tilting plane as disturbance. We have shown that the energy is conserved for the falling pendulums and that it is possible to predict the behavior for certain parameter values of the pendulums, thus confirming that the program is working correctly. Furthermore we have shown that a fully-actuated system is more controllable than an under-actuated system, and for each actuator that is removed, the system becomes less controllable. Finally we discuss the program performance where some concern is given toward the seemingly poor execution time of the program. The program has been tested for up to five pendulums with successful results. Most of the results however, are revolving around three pendulum systems.

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18

Lin, Dong. "Solar Wind-Magnetosphere-Ionosphere Coupling: Multiscale Study with Computational Models." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/100903.

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Solar wind-magnetosphere-ionosphere (SW-M-I) coupling is investigated with three different computational models that characterize space plasma dynamics on distinct spatial/temporal scales. These models are used to explore three important aspects of SW-M-I coupling. A particle-in-cell (PIC) model has been developed to explore the kinetic scale dynamics associated with the magnetotail dipolarization front (DF), which is generated as a result of magnetotail reconnection. The PIC study demonstrates that the electron-ion hybrid (EIH) instability could relax the velocity shear within the DF via emitting lower hybrid waves. The velocity inhomogeneity driven instability is highlighted as an important mechanism for energy conversion and wave emission during the solar wind-magnetosphere coupling, which has been long neglected before. The Lyon-Fedder-Mobbary (LFM) global magnetohydrodynamic (MHD) model is used to explore the fluid scale electrodynamic response of the magnetosphere-ionosphere to the interplanetary electric field (IEF). It is found that the cross polar cap potential (CPCP) varies linearly with very large IEF if the solar wind density is high enough. With controlled experiments of global MHD modeling driven by observed parameters, the linearity was interpreted as a result of the magnetosheath force balance theory. This study highlights the role of solar wind density in the electrodynamic SW-M-I coupling under extreme driving conditions. The LFM-TIEGCM-RCM (LTR) model, which is the Coupled-Magnetosphere-Ionosphere-Thermosphere (CMIT) model with Ring Current extension, is used to explore the integrated SW-M-I system. The LTR simulation study focuses on the subauroral polarization streams (SAPS), which involve both MHD and non-MHD processes and three-way coupling in the SW-M-I system. The global structure and dynamic evolution of SAPS are illustrated with state-of-the-art first-principle models for the first time. This study has successfully utilized multiscale models to characterize the forefront issues in the space plasma dynamics, which is required by the facts that plasmas have both particle and fluid featured properties and those properties are vastly different across geospace regions. It is highlighted that SW-M-I coupling could be significantly influenced by both microscopic and macroscopic processes. In order for a comprehensive understanding of the SW-M-I coupling, multiscale models and integrated framework of their combinations are critical.
Doctor of Philosophy

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19

Savage, Julie C. "Nuclear Receptors License Phagocytosis in Mouse Models of Alzheimer's Disease." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1430907654.

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20

SANTOS, GILBERTO A. dos. "Curvas homologas monofasicas e bifasicas para bombas de refrigeracao de reatores nucleares a agua leve pressurizada." reponame:Repositório Institucional do IPEN, 1990. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10232.

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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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21

Dahlstedt, Ludvig. "Lär trummisar som de blivit lärda vad avser noter och gehörsspel?" Thesis, Kungl. Musikhögskolan, Institutionen för musik, pedagogik och samhälle, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kmh:diva-2507.

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Syftet med denna uppsats är att belysa i vilken mån trumsetslärares tendenser att främja notläsningsbaserade verksamheter kontra gehörsspelsbaserade dito, samt det sätt som dessa olika moment utförs på, är ett resultat av hur de själva blivit undervisade. Tidigare forskning på bland annat spegelneuroner ger vid handen att olika handlingsprogram lärs in omedvetet hos en person vid kontakten med andra människor, för att vid ett senare tillfälle kunna manifesteras i handlingar likartade den som personen iakttagit. Uppsatsen bygger på kvalitativa intervjuer med fyra trumsetslärare från kulturskolor i Storstockholmsområdet. Resultatet visar att respondenterna med viss variation visar relativt stora likheter med sina respektivelärare särskilt med avseende på proportionerna i vilka de använder notspel respektive gehörsspel. Flera av respondenterna utför vidare undervisningsmoment på ett sätt som nästan är identiskt med hur de utförde det som elever. I de fall då respondenterna avviker från sin lärares didaktiska stil, har de snarast lagt till olika moment i undervisningen som inte förekom under deras elevtid.

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22

Briggs, Victoria Alice 1974. "Numerical modeling of borehole acoustics : parallel implementation of a loggin-while-drilling (LWD) model." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/58061.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2000.
Includes bibliographical references (p. 41-42).
A finite difference code is used to investigate acoustic waves in a borehole environment. The wave response to a logging-while-drilling (LWD) geometry is modeled in a fast formation. Helical waves circling the tool are shown to asymptote to the Stoneley wave velocity, giving confirmation of the fluid velocity in the borehole. Parameter studies for simpler borehole geometries show that the Stoneley wave, in soft formations where no shear arrival is present, can be used to invert for the shear velocity of the rock. A Beowulf parallel computer is used to implement the finite difference code showing the efficiency of cluster computing in a discretized space.
by Victoria Alice Briggs.
S.M.

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23

Mafofo, Joseph. "Saturation sequencing, characterisation and mapping of the NBS-LRR resistance gene family in apple, Malus x domestica (Borkh)." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9535_1269996826.

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To date five classes of resistance proteins have been identified in plants and these include the intracellular protein kinases, receptor-like protein kinases with extracellular leucinerich repeat (LRR) domain, LRR proteins that encode membrane bound extracellular proteins, toxin reductase and intracellular LRR proteins with a nucleotide-binding site (NBS). These proteins recognise &ldquo
invading pathogen&rdquo
and in turn trigger defence response systems that act to protect plants from invading pathogens. The NBS-LRR genes which constitutes the major class encode a family of resistance proteins that are made up of a centrally located nucleotide binding site domain and a C-terminal leucine rich repeat receptor. This class of genes constitute the largest family of resistance genes identified in plants to date. They make up the majority of proteins involved in the plant basal and inducible defence systems against pathogen infection.

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24

Jajtner, Jan. "Návrh vestavěného systému pro řízení výukového modelu rotačního kyvadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232046.

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The basic aim of this work is to improve existing model of rotational inverted pendulum by adding new mechanical features, implement the control algorithm to dsPIC microcontroller and develop related control electronics thus extending the functionality of current model while making it more compact. The work contains derivation of dynamic equations both by means of analytical methods and multi-body formalism of SimMechanics. These are used to design a state controller stabilizing the pendulum in inverse position. In addition, parameters of the system are being estimated experimentally. Swing-up controller is developed to drive the pendulum to unstable position. Various state estimators are added to controller to improve the control process while comparing their overall performance. The last point is devoted to development of superior state-automaton designed to switch between different regulating modes including fail-detection algorithms providing smooth operation of the model.

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Lopes, Ana Patrícia Nave. "Os meios humanos numa organização sem fins lucrativos : reestruturação das formas e tempo de trabalho num lar de idosos." Master's thesis, Instituto Superior de Economia e Gestão, 2011. http://hdl.handle.net/10400.5/3794.

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Mestrado em Gestão de Recursos Humanos
Actualmente, a vantagem competitiva parece emergir da capacidade de adaptação das organizações face às mudanças constantes do ambiente que as rodeia. Neste contexto, assumem especial relevância as propostas preconizadas no âmbito da "flexibilidade no trabalho e no emprego" e as estratégias que, em consonância, são seguidas a nível de GRH. Numa abordagem direccionada para a sustentabilidade de uma Organização sem Fins Lucrativos, em que se pretende aumentar a eficácia através da melhoria da qualidade do serviço, o presente Projecto considera imperativo valorizar os RH como um investimento, apresentando, para tanto, uma proposta de adaptação da força de trabalho, tendo em conta as necessidades imediatas de uma realidade organizacional caracterizada por laborar continuamente. O maior desafio de uma organização que pretenda tornar-se mais flexível, sem contudo tornar precária a sua força de trabalho, centra-se na conjugação destes princípios. Em termos metodológicos, foi desde logo evidente que a investigação aplicada, porque vocacionada para a resolução de problemas reais, seria a mais adequada. Depois, considerando que num Projecto se deve apresentar um plano de intervenção futura que vise a resolução do problema identificado, a recolha de dados junto de vários stakeholders, detentores de interesses díspares na organização, proporcionou o acesso a informação diversificada e abrangente. Desta forma, foram utilizadas técnicas inseridas numa abordagem que combina métodos quantitativos e qualitativos (Inquérito por Questionário, Observação, Entrevista e Grupo de Discussão), o que permitiu adequar a proposta à realidade organizacional, conferindo-lhe um maior grau de fidelidade. Os resultados permitiram aferir, que não existe no Lar de Vila Fernando uma estratégia de flexibilização ou a adopção de práticas de GRH integradas e conducentes à obtenção de vantagem competitiva. A proposta apresentada centra-se na conceptualização e sistematização de um modelo que inclui os seguintes elementos: I. Avaliação dos RH segundo o grau de singularidade e valor estratégico; II. Escolha do tipo de flexibilidade adequado aos objectivos organizacionais; III. Implementação de práticas de GRH favoráveis ao prosseguimento da estratégia adoptada e IV. Avaliação da implementação realizada para eventuais reajustamentos.
Nowadays, competitive advantages seem to emerge from the capacity of the organizations to adapt and cope with frequent surrounding changes. In this context, particular importance should be given to the proposals advocated in "flexibility in work and employment", and strategies that, accordingly, are followed at HRM level. In a targeted approach to the sustainability of a Nonprofit Organization, which aims to increase effectiveness by improving the quality of service, this project recognizes that it is imperative to value HR as an investment, proposing, for this purpose, to adapt the workforce taking into account the immediate needs of an organizational reality characterized by permanent labor. The biggest challenge of an organization willing to become more flexible, without making its workforce precarious, focuses on combining these principles. In methodological terms, it was immediately clear that the applied research, as it was dedicated to solve real problems, would be the most appropriate. Thereafter, considering that a project should present a plan for future interventions aiming the resolution of the identified problem, collecting data from various stakeholders with dissimilar interests in the organization, provided access to assorted and wide information. Thus, techniques have been used as part of an approach that combines qualitative and quantitative methods (survey, observation, interview and focus group), which allowed to adapt the proposal to the organizational reality, giving it a greater level of fidelity. The results demonstrated that Vila Fernando nursing home didn't have any flexibility strategy or integrated HRM practices in use, leading to competitive advantage. The present proposal focuses on conceptualization and systematization of a model with the following characteristics: I. Evaluation of HR according to the level of uniqueness and strategic value; II. Choose the type of flexibility in accordance to organizational goals; III. Implementation of HRM practices conducive to the continuation of the adopted strategy; IV. Evaluation of the implementation for possible adjustments.

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PUGLIESE, Luiz Felipe. "Uma Estratégia de Controle Multi-Modelo LQG/LTR Aplicada a um Sistema Não Linear de Levitação Magnética." reponame:Repositório Institucional da UNIFEI, 2015. http://repositorio.unifei.edu.br:8080/xmlui/handle/123456789/287.

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Este trabalho apresenta o desenvolvimento de uma nova estratégia de controle multi-modelo para aplicações em plantas não lineares. Realiza-se a união da metodologia clássica, com o desenvolvimento de controladores LQG/LTR em tempo discreto, junto à metodologia inteligente, através da lógica Fuzzy, de forma a obter como resultado um controlador híbrido que consiga driblar o problema da não linearidade existente em sistemas dinâmicos. Neste contexto, este trabalho apresenta uma estratégia de expandir a planta de processo por integradores backward Euler e, a partir da dinâmica da planta em malha aberta expandida, desenvolver e ajustar controladores multi-modelos LQG/LTR em tempo discreto e realizar a união destes via lógica Fuzzy para obter um controlador não linear global que atue na planta não linear de um sistema de levitação magnética. O objetivo do controlador não linear global proposto é ser capaz de rejeitar distúrbios, bem como manter o rastreamento do sistema para diferentes pontos de operação, usando a solução de controle multi-modelo LQG/LTR em tempo discreto unido a lógica Fuzzy. Para validação e comprovação da nova parametrização desenvolvida, foram realizadas simulações e ensaios práticos em um aparelho de levitação magnética da empresa canadense Quanser.

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Alhadi, Alhasani Huda, and Sundus Zaki. "Arabisktalande elevers användning av språkliga resurser i matematikämnet." Thesis, Malmö universitet, Fakulteten för lärande och samhälle (LS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-41687.

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I tidigare forskningslitteratur behandlas flerspråkighet som en resurs utifrån olika perspektiv i matematikklassrummet. Många studier förespråkar användningen av elevernas alla språkliga resurser i undervisningen, för att främja kunskaps- och identitetsutveckling. Utifrån våra erfarenheter används dock inte modersmålet i den utsträckning som rekommenderas av forskning. Syftet med denna studie var därför att belysa hur arabisktalande elever använder sig av sina språkliga resurser, samt vilka motiv som ligger bakom språkanvändningen utifrån ett elevperspektiv, vid lösandet av matematiska tal och begrepp. Detta med utgångspunkten i kvalitativa forskningsmetoder, som består av deltagande observationer och semistrukturerade intervjuer, som genomfördes med tio arabisktalande elever. Utifrån det empiriska datamaterialet som framkom i undersökningen, utfördes en tvåstegsanalys, där den tematiska analysmetoden utgjorde grunden för att definiera olika teman, som sedan applicerades i den teoretiska referensramen. Resultatet i studien visade att eleverna antingen använde svenskan uteslutande eller tillsammans med arabiskan, dock förekom de matematiska talen och begreppen oftast på svenska. Bakomliggande orsaker var att eleverna bland annat anpassar språket utifrån samtalspartner, samt hur de anser att språkanvändningen påverkar identiteten i klassrumsmiljön. Detta diskuteras i relation till nationell och internationell forskningslitteratur, som belyser olika aspekter utifrån ett kunskaps- och identitetsutvecklande perspektiv. Baserat på detta drar vi slutsatsen att elevernas användning av alla de språkliga resurserna är begränsade, på grund av olika aspekter. Detta kan medföra att matematikämnet blir mer utmanande, eftersom eleverna inte får möjligheten att utveckla matematikkunskaper på modersmålet.

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Novotný, Jan. "Návrh a realizace laboratorního modelu "Inverzní kyvadlo řízené setrvačníkem"." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417781.

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This thesis deals with the design of a lecture model of an inverse pendulum controled by a flywheel, which is a system of an unstable beam with an electromotor and a reaction wheel at its end. The moment of motor acting on the flywheel also causes a moment acting on the beam, which is the way the system is controled. The device works connected to a personal computer.

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Saucet, Simon. "Toward the understanding of TIR-NB-LRR-mediated immunity : study of the AvrRps4 recognition model in Arabidopsis." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/48107/.

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The recognition of pathogen–secreted effectors is a major component of plant innate immunity and is mainly mediated by NB-LRR resistance (R) proteins. However, the mechanisms by which NB-LRR proteins recognize effectors and induce downstream signaling events are poorly known. This PhD work focused on the characterization of TIR-NB-LRR–mediated immnunity in plants. In Arabidopsis, two TIR-NB-LRR encoding R genes, RRS1 and RPS4, are in a head-to-head arrangement on chromosome 5. They interact to confer recognition to AvrRps4 and (with the right allele of RRS1) PopP2, two bacterial effectors, from Pseudomonas syringae and Ralstonia solanacearum respectively. To dissect AvrRps4–triggered immunity, I focused on the RRS1– and RPS4–independent AvrRps4 recognition (RRIR) observed in the Ws-2 and Col-0 Arabidopsis accessions. I map-based cloned another pair of R genes, RRS1B and RPS4B, genetically linked and highly similar to RRS1-RPS4, responsible for the RRIR. Interestingly, RRS1B-RPS4B recognizes AvrRps4 but not PopP2. Using domain swap experiments, I demonstrated that RRS1 exons 5, 6 and 7 specify PopP2 recognition. My data suggest that AvrRps4 and PopP2 interact directly with RRS1 and RRS1B. However, the exact mechanism by which these effectors activate TIR-NB-LRR R proteins remains to be determined. Overexpressing the N-terminal domain of RPS4, RPS4TIR+80, activates cell death in plants and I demonstrated that it requires a nuclear localization. Similarly, the C-terminal part of RPS4B comprises a nuclear localization signal and is required for RRS1B-RPS4B–dependent AvrRps4 recognition. Interestingly, RPS4TIR+80–mediated cell death can be suppressed by co-expressing RRS1TIR. Using a proteomic approach, I showed that TIR domains and full length RRS1, RPS4, RRS1B and RPS4B can associate in planta forming distinct heterodimers. However, I showed that, despite their homologies, these R proteins only function with their respective pair partner for effector recognition and/or downstream signaling activation.

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Osuna, Jessica. "Genrepedagogik i Lgr 11 : En undersökning om genrepedagogik som modell för att utveckla svenska som andraspråkselevernas skriftliga förmåga." Thesis, Högskolan i Gävle, Avdelningen för humaniora, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9459.

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31

Ortiz, Bautista Raúl Julián. "Eficacia tópica del extracto acuoso de Matricaria Chamomilla L. asociado a un vehículo con función emoliente en el tratamiento de la dermatitis atópica inducida en un modelo murino: informe experimental." Thesis, Universidad de las Américas Puebla, 2013. http://catarina.udlap.mx/u_dl_a/tales/documentos/lmr/ortiz_b_rj/.

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32

Shaheed, Rawaa. "3D Numerical Modelling of Secondary Current in Shallow River Bends and Confluences." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34922.

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Secondary currents are one of the important features that characterize flow in river bends and confluences. Fluid particles follow a helical path instead of moving nearly parallel to the axis of the channel. The local imbalance between the vertically varying centrifugal force and the cross-stream pressure gradient results in generating the secondary flow and raising a typical motion of the helical flow. A number of studies, including experimental or mathematical, have been conducted to examine flow characteristics in curved open channels, river meanders, or confluences. In this research, the influence of secondary currents is studied on the elevation of water surface and the hydraulic structures in channel bends and confluences by employing a 3D OpenFOAM numerical model. The research implements the 3D OpenFOAM numerical model to simulate the horizontal distribution of the flow in curved rivers. In addition, the progress in unraveling and understanding the bend dynamics is considered. The finite volume method in (OpenFOAM) software is used to simulate and examine the behavior of secondary current in channel bends and confluences. Thereafter, a comparison between the experimental data and a numerical model is conducted. Two sets of experimental data are used; the data provided by Rozovskii (1961) for sharply curved channel, and the dataset provided by Shumate (1998) for confluent channel. Two solvers in (OpenFOAM) software were selected to solve the problem regarding the experiment; InterFoam and PisoFoam. The InterFoam is a transient solver for incompressible flow that is used with open channel flow and Free Surface Model. The PisoFoam is a transient solver for incompressible flow that is used with closed channel flow and Rigid-Lid Model. Various turbulence models (i.e. Standard k-ε, Realizable k-ε, LRR, and LES) are applied in the numerical model to assess the accuracy of turbulence models in predicting the behaviour of the flow in channel bends and confluences. The accuracies of various turbulence models are examined and discussed.

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Hans, Etienne. "Modélisation des lignes de bus pour la prévision temps réel et la régulation dynamique." Thesis, Vaulx-en-Velin, Ecole nationale des travaux publics, 2015. http://www.theses.fr/2015ENTP0006/document.

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Le bus est le moins cher des transports en commun. En contrepartie, il est beaucoup plus difficile à exploiter que le tramway ou le métro qui sont mieux protégés des influences extérieures. Un exemple typique est l’apparition de trains de bus, groupes de véhicules appartenant à la même ligne et arrivant ensemble à un arrêt. Ce phénomène augmente le temps d’attente moyen des usagers aux arrêts et induit un mauvais usage des bus disponibles. Cette thèse développe les outils permettant de garantir la régularité des lignes. Les recherches menées au cours de cette thèse s’articulent suivant deux directions.Un premier constat est que les modèles de lignes de bus existants ne prennent pas en compte les éléments extérieurs que sont les feux de circulation et le trafic environnant. L’absence d’une modélisation mixte intégrant aussi bien les dynamiques internes des lignes que les influences extérieures contraint fortement la diversité des stratégies de contrôle qui ont été proposées jusqu’ici. En effet, les régulations s’appliquent principalement au niveau des arrêts par l’intermédiaire des conducteurs et ne cherchent jamais à réguler le trafic à l’aide des feux de circulation. Un premier axe de recherche développé dans cette thèse est le raffinement des modèles de bus pour prendre en compte le trafic.Plusieurs méthodes d’estimation de temps de parcours sur un boulevard à feu sont proposées. Elles sont basées sur le modèle LWR, compromis fort satisfaisant entre simplicité d’usage et robustesse pour reproduire des situations réelles.Un second constat est que les stratégies de régulation classiques ne sont que rarement basées sur une prévision à court-terme de l'état du système. Elles sont donc souvent actionnées une fois que la situation est trop dégradée, ce qui les rend parfois inaptes à compenser l'instabilité des lignes. Le deuxième axe de recherche consiste à appliquer les modèles raffinés dans un contexte d’exploitation en temps-réel. Le modèle prévoit l'évolution des lignes de bus à court terme, ce qui permet d’actionner préventivement une stratégie de régulation adaptée. En particulier, une méthode de prévision à court terme est développée et testée sur des données réelles. Elle est ensuite combinée à une méthode récente de contrôle des bus
Bus is cheaper than other transport modes. However, maintaining optimal operations is harder than for streetcars or subways since buses are surrounded by traffic flows. Sometimes, buses of the same route bunch and travel together instead of keeping constant time headways. This phenomenon increases the average waiting time of passengers. As a result, they may tend to shift to other transport modes. This thesis proposes some methods to keep bus routes regular. Two main lines of research are investigated.First, classical models of bus routes do not account for external events like traffic signals and traffic flows. Due to this gap, existing control strategies only apply on buses through their drivers.Traffic flows are not controlled to favor buses compared to cars. Thus, the first area of research consists in refining bus models to account for external events. Several travel time estimation methods on urban arterials are proposed. They are based on the kinematic wave model (LWR). It is known to be a fine trade-off between simplicity and robustness to properly reproduce traffic dynamics.Second, control strategies are often applied once the bus route is too disrupted to be restored to regularity. Predictions of future bus route states could improve the efficiency of regulations. The second area of research consists in using the refined bus models in real time operations. The model forecasts the evolution of buses on their route for short-term. The predictions are evaluated thanks to real data to guarantee their quality. Then it enables regulations to be applied before bunching. In particular, height holding control methods are presented and compared in simulation

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Gill, Gulnaz Akhtar. "Characterisation of adherens junctional molecules in the larynx : development of an experimental model to study laryngopharyngeal reflux (LPR)." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417645.

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35

Danielsson, Stina. "Håller din lärobok i matematik måttet? : En modell för granskning av hur läroböcker i matematik förhåller sig till rådande styrdokuments centrala innehåll." Thesis, Högskolan Dalarna, Matematikdidaktik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:du-10025.

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36

Jadon, Newton. "Gestão Social: estudo comparado das entidades Centro de Assintência e Promoção Social Nosso Lar e ACM de São Paulo - área de desenvolvimento e assistência social." Pontifícia Universidade Católica de São Paulo, 2007. https://tede2.pucsp.br/handle/handle/1188.

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This Dissertation was elaborated from a management perspective, in order to enlarge knowledge about management models adopted by Third Sector organizations, having as basis a comparative study between two social entities that actuate at the east zone of São Paulo City: Centro de Assistência e Promoção Social Nosso Lar (Our Home Assistance Center and Social Promotion) and Associação Cristã de Moços de São Paulo Divisão de Desenvolvimento Social (Christian Boys Association of São Paulo Social Development Division). The analysis done throughout this work are oriented by theoretical references that seek the concept and classification of the Third Sector, mainly the studies of Falconer (1999), Peter Drucker (1994), Ioschpe (2005), Dowbor (2001/2002/2003/2004), Landim (1994/1999/2000/2001), Rodrigues (2004), Salamon (1994/1998/), Coleman (1994/1998), Costa (2004), Costa Júnior (1997), Junqueira (2000), Montaño (2005), and Putnam (2000). By the end of this study suggestions and proposals are presented as a contribution so that the social management of these entities is not a simple transposition of management tools used by the business sector with profitable purposes, but developed based on reflections that consider the existing peculiarities on social entities of the Third Sector
Esta Dissertação foi elaborada a partir de uma perspectiva gerencial, com vistas na ampliação do conhecimento sobre os modelos de gestão adotados pelas organizações do Terceiro Setor, tendo como base um estudo comparativo entre duas entidades sociais que atuam na zona leste da Cidade de São Paulo, a saber, o Centro de Assistência e Promoção Social Nosso Lar e a Associação Cristã de Moços de São Paulo Divisão de Desenvolvimento Social. As analises realizadas ao longo deste trabalho são orientadas por referenciais teóricos que buscam a conceituação e a classificação do Terceiro Setor, principalmente, os estudos de Falconer (1999), Peter Drucker (1994), Ioschpe (2005), Dowbor (2001/2002/2003/2004), Landim (1994/1999/2000/2001), Rodrigues (2004), Salamon (1994/1998/), Coleman (1994/1998), Costa (2004), Costa Júnior (1997), Junqueira (2000), Montaño (2005), Putnam (2000). Ao final deste estudo são apresentadas sugestões e propostas como contribuição para que a gestão social dessas entidades não seja uma simples transposição das ferramentas de gestão utilizadas pelo setor empresarial com fins lucrativos, mas que seja desenvolvida com base em reflexões que consideram o universo das relações sociais, isto é, o capital social, bem como as peculiaridades existentes nas entidades sociais do Terceiro Setor

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Rossi, Edison. "O modelo de atendimento do Lar dos Velhinhos de Campinas e a qualidade de vida de seus usuarios : estudos selecionados." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/253793.

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Orientador: Anita Liberalesso Neri
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação
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Resumo: Ao longo de quase 100 anos, o Lar dos Velhinhos de Campinas deixou de ser asilo de mendicidade, cuja criação coincidiu com a emergência da pobreza como questão social na cidade. Transfonnou-se em entidade médico-social dedicada à promoção da saúde e à melhoria da qualidade de vida de idosos, com base em procedimentos médicos, sociais e educacionais controlados. Implantado a partir de 1984, o novo modelo inclui registro, monitoramento e avaliação sistemáticos das práticas profIssionais, das condições ambientais e da saúde global dos idosos. Este trabalho apresenta os fundamentos do modelo e os resultados de seis estudos demonstrativos sobre a interação do atendimento aos idosos com a investigação e a formação de recursos humanos em serviço. Além de apresentar indicadores de melhoria na qualidade de vida dos idosos, incidindo sobre padrões de morbidade, mortalidade, quedas, osteoporose, nutrição e velocidade de hemossedimentação, pretendemos discutir condições que estão dando origem a uma comunidade epistemológica, efetivo instrumento de intervenção política. Os asilos deveriam ter estrutura administrativa e médico-social como fundamentos da oferta de serviços de assistência social, medicina e enfermagem, a partir dos quais agregar-se-iam outros, conforme os propósitos da instituição. Deveriam promover uma medicina preventiva de caráter secundário, e algumas vezes primário, além de estruturar-se para oferecer serviços de reabilitação no âmbito terciário, uma vez que quase sempre funcionam como instituição de caráter fmal e única fonte de cuidados para os usuários
Abstract: Along almost a century, the Lar dos Velhinhos de Campinas assumed a medical and social orientation, replacing its archaic prulanthropic feature. lnstead of an asylum dedicated to poverty, since 1984 it became an effective medical-social institution founded on weIl-controlled medical, social and educational procedures, and dedicated to health promotion and to the improvement of quality of life of old people. The new model includes continuous registering, monitoring and assessment of professional practices, environrnental conditions and elderly global health. This work presents the foundations of the model as well as the results of six demonstrative studies related to conditions and indicators of quality of life among the residents: mortality, morbidity, falls, nutrition, osteoporosis and erythrocyte sedimentation rate. Another aim is to report the process of establishing a set of practices that are uncommon in the Brazilian scenery of long-term care to old people. They represent a product of the interaction between caring practices, research, and on the job training addressed to the staff We discuss the social and political implications of the model that lays on a professionaIly oriented administrative and financial structure. Preventive and rehabilitative medicaL nursing, and social services are provided to the cIients that find in this kind of institution their final home and a vital source of care
Mestrado
Mestre em Gerontologia

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38

Mukherjee, Gaurav. "Design and Development of an Assistive Exoskeleton for Independent Sit-Stand Transitions among the Elderly." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1407407328.

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39

Ramos, Fernández César. "Control predictivo basado en modelos (CPBM) robusto con BDU." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/1844.

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El Control Predictivo Basado en Modelos (CPBM) optimiza un índice que incorpora un parámetro de penalización para las acciones de control lambda, con el fin de que no sean demasiado bruscas, a la vez que se mejora la robustez del sistema. El principal inconveniente radica en que el sintonizado de lambda se suele regir por criterios empíricos, y poco orientados a la mejora de la robustez. De entre las diferentes técnicas de mejora de la robustez en CPBM se destaca la optimización Min-Max de las especificaciones, donde se resuelve el problema de optimización para el peor modelo en una región acotada. Desde otro punto de vista, el principio de mínimos cuadrados está presente en numerosas teorías de identificación y control. De hecho el CPBM se puede plantear como un problema de mínimos cuadrados. Su principal inconveniente radica en que es sensible a los errores en los datos (mal condicionamiento), lo cual se puede mejorar regularizando el problema mediante el parámetro de regularización lambda ajustado empíricamente (análogo al parámetro lambda de penalización del esfuerzo de control en CPBM). La técnica BDU (Bounded Data Uncertainties) es una técnica de regularización de problemas de mínimos cuadrados, originalmente desarrollada para problemas de estimación, y poco usada en control, salvo el controlador lineal cuadrático (LQR) con horizonte de predicción finito considerando incertidumbre paramétrica. Dicha técnica diseña el parámetro de regularización lambda teniendo en cuenta la cota de la incertidumbre presente en el sistema y plantea el problema como una optimización Min-Max. Por lo tanto se puede establecer la analogía con el problema Min-Max de CPBM robusto, así el objetivo principal de la tesis consiste en usar la técnica BDU para sintonizar lambda de modo guiado y con el fin de mejorar la robustez del sistema. Otro objetivo adicional es asegurar la estabilidad. Por tanto, se pretende plantear un LQR robusto y estable, denominado LQR-BDU, robusto por usar
Ramos Fernández, C. (2007). Control predictivo basado en modelos (CPBM) robusto con BDU [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/1844
Palancia

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Zheng, Yilei. "IFSO: A Integrated Framework For Automatic/Semi-automatic Software Refactoring and Analysis." Digital WPI, 2004. https://digitalcommons.wpi.edu/etd-theses/241.

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To automatically/semi-automatically improve internal structures of a legacy system, there are several challenges: most available software analysis algorithms focus on only one particular granularity level (e.g., method level, class level) without considering possible side effects on other levels during the process; the quality of a software system cannot be judged by a single algorithm; software analysis is a time-consuming process which typically requires lengthy interactions. In this thesis, we present a framework, IFSO (Integrated Framework for automatic/semi-automatic Software refactoring and analysis), as a foundation for automatic/semi-automatic software refactoring and analysis. Our proposed conceptual model, LSR (Layered Software Representation Model), defines an abstract representation for software using a layered approach. Each layer corresponds to a granularity level. The IFSO framework, which is built upon the LSR model for component-based software, represents software at the system level, component level, class level, method level and logic unit level. Each level can be customized by different algorithms such as cohesion metrics, design heuristics, design problem detection and operations independently. Cooperating between levels together, a global view and an interactive environment for software refactoring and analysis are presented by IFSO. A prototype was implemented for evaluation of our technology. Three case studies were developed based on the prototype: three metrics, dead code removing, low coupled unit detection.

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41

Saak, Jens. "Efficient Numerical Solution of Large Scale Algebraic Matrix Equations in PDE Control and Model Order Reduction." Doctoral thesis, Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200901642.

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Matrix Lyapunov and Riccati equations are an important tool in mathematical systems theory. They are the key ingredients in balancing based model order reduction techniques and linear quadratic regulator problems. For small and moderately sized problems these equations are solved by techniques with at least cubic complexity which prohibits their usage in large scale applications. Around the year 2000 solvers for large scale problems have been introduced. The basic idea there is to compute a low rank decomposition of the quadratic and dense solution matrix and in turn reduce the memory and computational complexity of the algorithms. In this thesis efficiency enhancing techniques for the low rank alternating directions implicit iteration based solution of large scale matrix equations are introduced and discussed. Also the applicability in the context of real world systems is demonstrated. The thesis is structured in seven central chapters. After the introduction chapter 2 introduces the basic concepts and notations needed as fundamental tools for the remainder of the thesis. The next chapter then introduces a collection of test examples spanning from easily scalable academic test systems to badly conditioned technical applications which are used to demonstrate the features of the solvers. Chapter four and five describe the basic solvers and the modifications taken to make them applicable to an even larger class of problems. The following two chapters treat the application of the solvers in the context of model order reduction and linear quadratic optimal control of PDEs. The final chapter then presents the extensive numerical testing undertaken with the solvers proposed in the prior chapters. Some conclusions and an appendix complete the thesis.

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Shimp, Samuel Kline. "Inhibition of Heat Shock Protein 90 Reduces Inflammatory Signal Transduction in Murine J774 Macrophage Cells and Lessens Disease in Autoimmune MRL/lpr Mice: What in vitro, in vivo, and in silico Models Reveal." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77080.

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Heat shock protein 90 (HSP90) is a molecular chaperone protein that protects proteins from degradation, repairs damaged proteins, and assists proteins in carrying out their functions. HSP90 has hundreds of clients, many of which are inflammatory signaling kinases. The mechanism by which HSP90 enables inflammatory pathways is an active area of investigation. The HSP90 inhibitors such as geldanamycin (GA) and its derivative 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG) have been shown to reduce inflammation. It was hypothesized that inhibiting HSP90 would reduce inflammatory signal cascade levels. To test this, J774 mouse macrophage cells were treated with 17-DMAG and immune-stimulated with lipopolysaccharide (LPS). 17-DMAG treatment reduced nitric oxide (NO) production and the expression of pro-inflammatory cytokines interleukin (IL)-6, IL-12, and TNF-α. Inhibition of HSP90 also prevented nuclear translocation of NF-κB. To investigate the anti-inflammatory effects of HSP90 inhibition in vivo, MRL/lpr lupus mice were administered 5 mg/kg 17-DMAG for six weeks via intraperitoneal injection. Mice treated with 17-DMAG were found to have reduced proteinuria and reduced splenomegaly. Flow cytometric analysis of splenocytes showed that 17-DMAG decreased double negative T (DNT) cells. Renal expression of HSP90 was also measured and found to be increased in MRL/lpr mice that did not receive 17-DMAG. The mechanistic interactions between HSP90 and the pro-inflammatory nuclear factor-κB (NF-κB) pathway were studied and a computational model was developed. The model predicts cellular response of inhibitor of κB kinase (IKK) activation and NF-κB activation to LPS stimulation. Model parameters were fit to IKK activation data. Parameter sensitivity was assessed through simulation studies and showed a strong dependence on IKK-HSP90 binding. The model also accounts for the effect of a general HSP90 inhibitor to disrupt the IKK-HSP90 interaction for reduced activation of NF-κB. Model simulations were validated with experimental data. In conclusion, HSP90 facilitates inflammation through multiple signal pathways including Akt and IKK. Inhibition of HSP90 by 17-DMAG reduced disease in the MRL/lpr lupus mouse model. A computational model supported the hypothesis that HSP90 is required for IKK to activate the NF-κB pathway. Taken together, HSP90 is a prime target for therapeutic regulation of many inflammatory processes and warrants further study to understand its mechanism of regulating cell signaling cascades.
Ph. D.

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Uzunova, Milka. "Commande non-entière des systèmes. : développement et application pour les modèles du flux de trafic routier." Thesis, Artois, 2009. http://www.theses.fr/2009ARTO0205/document.

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Le travail de thèse présenté dans le manuscrit s’articule autours de plusieurs éléments d’études concernant les modèles macroscopiques de flux de trafic routier à savoir la modélisation, la simulation et la commande. L’objectif de l’étude consiste à atteindre ou à maintenir une circulation automobile fluide sur des voies rapides. Il s’agit donc de s’assurer que le processus de flux de trafic routier reste dans des limites de stabilité et tout en offrant les meilleures performances et qualités de service aux usagers. L’étude repose sur l’analyse de la solution analytique d’une équation dynamique d’évolution du processus afin d’obtenir une fonction de transfert (TF). Le modèle retenu est un modèle macroscopique de flux de trafic du premier ordre du type LWR. L’objectif est d’obtenir une modélisation analytique conforme au modèle du réseau routier, qui dans le cas applicatif retenu est constitué d’un segment en aval d’un péage routier. Une commande du flux de trafic reposant sur le choix d’une stratégie qui satisfait les besoins des usagers sur les autoroutes au niveau des péages a été étudiée. Mettre en place une gestion des axes routier est une nécessité due à la croissance des flux qui ont pour conséquence de provoquer une saturation des voies de circulation. Les congestions apparaissent généralement aux heures de pointe, lors de travaux ou d’incidents. Elles provoquent des retards dans les déplacements des usagers et ont donc des répercutions socio-économiques et sur l’environnement. Il est donc nécessaire de garantir la fluidité du trafic routier par la conception et l’implémentation de stratégies de commande efficaces permettant d’annuler, de réduire, ou de retarder l’apparition des congestions. Une boucle de correction robuste de type CRONE est introduite dans le système de flux de trafic afin de satisfaire les objectifs de qualité requises du réseau routier face aux aléas de circulation et en assurant une circulation fluide, par le contrôle des barrières de péage.La variable de commande proposée est la densité du tronçon en amont du péage. Le résultat obtenu représente un retard pur pour le modèle de trafic comme un système à paramètres distribués. La commande étudiée est une commande robuste d’ordre non-entier associée à un prédicteur de Smith et une compensation du retard. Toutes les études ont été menées en simulation sous Matlab/Simulink. L’étude des réponses temporelles et harmoniques du système de flux de trafic a été réalisée. La stabilité du système et de ses performances ont pu ainsi être abordées. De même l’étude harmonique permet d’assurer que le système présente une marge de stabilité suffisante dans le domaine de variation des paramètres
This thesis presents research carried out to several elements of the macroscopic traffic flow as the model, the control and the simulation of his control system. The main aims of the realized studies consist to keep the circulation on the high-ways fluid. That means that we must to assure some quality of the process regarding the stability of this process. More over to offer best performances and quality of the traffic services for the users on the ways networks.In our study we use the analytical solution method of the dynamic equation presenting the LWR traffic flow model process, for which we look to obtain transfer function. Our objective is to obtain a conform result to a toll plaza. Furthermore we look to make a choice of appropriate control algorithm to satisfy the traffic network and users’ needs. The traffic flow management needs results from the increasingly of the flows. As consequence of this we can obtain saturation in some places in the road network wildly known as a traffic jam usually in the rush hours, by reason of accident or repairs works. All this provoke a delay of the transportation flow and important environmental after-effect. Therefore it’s very important to assure the fluidity of the traffic using control strategies which will cancel, reduce or delay the traffic jam appearances. Because of all the reasons above, we have proposed a system with non-integer order control algorithm for maintain the traffic fluid by the control of the pikes in the toll plaza. The control variable is the upstream density which will influence on the downstream one. After the analytical solution of the toll plaza model we obtain a delay function which presents the plant in our distributed parameter system. For this system we apply a Smith prediction non-integer control algorithm and moreover we ameliorate this system with a Dead time non-integer order compensator

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Pereira, Leonardo Valero. "Análise dinâmica e otimização do controle de vibrações pelo algoritmo do regulador quadrático linear em um modelo veicular completo sob a ação de perfis de pista." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108491.

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O presente trabalho implementa a otimização dos ganhos de um controle ativo com regulador linear quadrático (LQR), em um modelo veicular completo sujeito a um perfil de estrada proposto pela ISO 8608, para atenuação das acelerações RMS transmitidas para a carroceria e o assento do motorista. Dado que o ganho do controle LQR é formulado a partir das matrizes Q e R, o procedimento determina as matrizes ótimas do controle para a minimização das acelerações RMS transmitidas. O modelo é analisado no domínio do tempo por meio da formulação de espaço-estado, e o procedimento de otimização é avaliado pelo método dos algoritmos genéticos. Os parâmetros Q e R, que fornecem o melhor ganho para minimização do problema de otimização, reduzem em até 1000 vezes as acelerações RMS quando comparadas à situação sem atuação do controle. Após otimizar Q e R, são analisadas a influência nos demais graus de liberdade e as forças necessárias para os resultados obtidos.
This work aims to optimize the gains of an active control with linear quadratic regulator (LQR), applied in a full vehicle model subject to a random road surface profile proposed by ISO 8608, for reduction of RMS accelerations transmitted to the driver’s seat and the vehicle body. Since the gain of LQR control is formulated from the matrices Q and R, the procedure determines the optimal control matrices that minimize the RMS accelerations transmitted. The model is analyzed in the time domain through state-space formulation, and the optimization process evaluated by the method of genetic algorithms. The parameters Q and R, which provide the best gain for minimizing the optimization problem, reduce by up to 1000 times the RMS accelerations when compared to the situation without active control. Finally, after optimizing Q e R, are analyzed the influence to the other degrees of freedom and the forces necessary for the results obtained.

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Gutjahr, Oliver [Verfasser], and Günther [Akademischer Betreuer] Heinemann. "Climate simulations with the regional climate model COSMO-CLM for the Saar-Lor-Lux region and Rhineland-Palatinate / Oliver Gutjahr ; Betreuer: Günther Heinemann." Trier : Universität Trier, 2014. http://d-nb.info/1197806822/34.

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Wang, Tao. "Print Quality regarding Advertisements in the Nordic Heatset Printing Industry." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-108261.

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Accompanied by the fast development of technology and channels in the advertisement industry, many traditional incumbents felt pressure and were seeking ways to change or better their own position within the industry. The Nordic Association of Heatset Printer (NAHP), where this thesis was carried out, is largely associated with these traditional channels for advertising, such like newspapers, brochures and magazines. They are taking their initiative to prepare and face the challenge coming from new entrants within the advertising industry. I have identified that to fulfill the responsibilities to their customers at a very high standard could enable themselves to continuingly remain a competitive position in the advertisement industry, and among these responsibilities, the printing quality is definitely an important one. By checking whether all the printers conform to the error tolerances set by the ISO standard, I could offer the members of the organization useful information and suggestion, and eventually give them directions on where they might need to improve, and where they need to maintain. I have also identified 3 determinants regarding printing and they are print density, dot gain and the ΔE of L*a*b*. Checking whether those three primaries have met the industry standard has become the main job of this thesis work. To finish this thesis work, I have gathered samples from printers within NAHP, tested the color control strips on each samples, input the data into statistical Excel files, programmed to analyze the data, and finally conducted evaluations. The test results have revealed that most presses from the printing houses within my thesis work are able to offer high quality prints. However, certain problems have also been identified. Some presses definitely need to change and improve their printing setting in order to reach ISO standard and achieve audience satisfaction. In addition, the results have also double confirmed that all three investigated properties, print density, dot gain and ΔE of L*a*b*, correlate intensely and influence one and another.

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FERNANDES, Pedro Baptista. "Controladores robustos do tipo LQG/LTR de ordem reduzida para sistemas MIMO com saídas independentes de seus modos não dominantes." Universidade Federal do Pará, 2014. http://repositorio.ufpa.br/jspui/handle/2011/5598.

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O objetivo principal desta dissertação é apresentar uma solução eficiente, prática e de simples implementação para um problema recorrente em projetos de controladores robustos multivariáveis do tipo LQG/LTR: a elevada ordem que estes controladores podem obter dependendo das complicações apresentadas pelo sistema dificultando para que este possa ser controlado de maneira satisfatória. Para que esta meta seja alcançada, é apresentada uma técnica de redução do modelo de sistemas com metodologia bastante descomplicada, dispensando qualquer necessidade de complexas programações para a sua utilização. Esta metodologia porém, é somente aplicável a uma classe bastante específica de sistema. Em suma, o sistema deve possuir variáveis de estado desacopladas do restante do sistema, ou seja, variáveis que não sofram influências de outras e que também não provoquem grande efeito nas saídas do sistema. Foi escolhido um sistema multivariável de sexta ordem, com duas entradas e duas saídas para que a técnica de redução de ordem de modelo seja testada. Este sistema possui as características especiais mencionadas anteriormente bem como exige o projeto de compensador dinâmico e a adição de integradores às suas saídas para que seja controlado adequadamente. Este trabalho pretende apresentar o procedimento de todo o projeto mencionado, desde a obtenção de um modelo de ordem reduzida até a implementação do controlador LQG/LTR. Em seguida, o controlador obtido é testado através de diversas simulações e os resultados encontrados são discutidos para a avaliação da eficácia e da praticidade do método proposto para obtenção de controladores de ordem reduzida.
This thesis’ main goal is to introduce an efficient, practical and easy to implement solution to a recurring problem in projects of LQG/LTR multivariable robust controllers: the high order these controllers may obtain depending on the complications presented by the system hampering its control in a satisfactory way. For this goal to be achieved, a system model reduction technique with very simple methodology is introduced, dispensing any needs of complex programming for its use. This methodology however, is only applicable to a very specific class of system. Summarizing, the system must have state variables decoupled from the rest of the system, that is, variables that don’t not influenced by others and that also don’t cause major effects on the system’s outputs. It was chosen a sixth order multivariable system having two inputs and two outputs for the model order reduction be tested. This system has the special characteristics mentioned before and also demands a dynamic compensator project as well as the integrators addition to its outputs so it can be controlled adequately. This text intends to show the procedure for the whole project, since the reduced order model achievement to the LQG/LTR controller implementation. Then, the obtained controller is tested through several simulations and the attained results are discussed for effectiveness and practicality evaluation of the proposed method for reduced order controller project.

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Jiruška, Jiří. "Návrh a řízení samobalancujícího robotu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-240791.

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This thesis deals with complete design and manufacturing of autonomous two wheeled self-balancing robot. The goal of this thesis is to maintain the robot in up-right position and to follow black line using camera. The robot is controlled using Raspberry Pi and driven by DC motors. This thesis includes the design and implementation of hardware and software parts. Subsequently there was created the dynamic model in Matlab/Simulink. Based on this model, the LQR and PID controller was designed.

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Rodrigues, Andr?a Gabriel Francelino. "Educar para o lar, educar para a vida :cultura escolar e modernidade educacional na Escola Dom?stica de Natal (1914-1945)." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14542.

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La recherche propose un nouveau regard sur l Institution Scolaire ?cole Dom?stica de Natal, en essayant de tenir compte de la multiplicit? des auteurs et des pratiques d?velopp?es ? l ?cole qui d?finissaient le mieux et expliquaient les ph?nom?nes de cette r?alit? ?ducative et des rapports avec le temps et le lieu o? elle s ins?rait. Pour ce faire, les concepts de m?moire et culture scolaire ont ?t? fondamentaux pour la compr?hension de ces pratiques, parce qu ils ont contribu? ? notre lecture historique-culturelle de l ensemble d aspects institutionnalis?s ? l ?cole, comme son curriculum, ses finalit?s, ses fa?ons d enseigner et d apprendre, ses r?gles de conduite, ses normes, enfin, ce qui caract?risait son organisation et ses pratiques quotidiennes. C ?tait l ?cole Dom?stica de Natal l institution pionni?re dans le mod?le d ?ducation f?minine au Br?sil, nous le reconnaissons en priorit? et nous visons ? le circonscrire ? son ind?l?bile contribution ? l Histoire de l ?ducation de Rio Grande do Norte. Con?ue par un mod?le d organisation scolaire europ?en pour l ?ducation f?minine, l ?cole Dom?stica de Natal a ?t? inaugur?e en 1914, en ayant comme cr?ateur l intelectuel de Rio Grande do Norte Henrique Castriciano de Souza. Sa singularit?, s opposant aux ?coles f?minines existantes au Rio Grande do Norte et au Br?sil en ce temps-l?, ?tait d? au mod?le scolaire adopt?, qui appuyait sur la formation d une femme pr?par?e ? r?pondre aux aspirations modernes surgissant avec l av?nement de la R?publique. Ce contexte exigeait de l ?cole la formation d un mod?le de femme dans les aspects moral, physique, culturel et intelectuel model?s sur les id?aux de l ordre et du progr?s. Ce serait une nouvelle m?thode d ?ducation scolaire qui pourrait favoriser la modernisation des anciennes m?thodes d enseignement, provoquant le surgissement de mod?les qui impliqueraient une nouvelle organisation p?dagogique aux ?coles de l`?tat et conduiraient la ville ? de nouveaux et hauts paliers de culture et civilit?. Avec cela, l ?cole contribuerait ? ce que la femme joue un r?le dans la soci?t? d une mani?re plus active, sociale et mieux adapt?e. Les mots ordre, nouveau, civilit?, moderne et progr?s se r?pandaient et s entrecroisaient avec des valeurs archa?ques toujours permanentes et enracin?es dans la vision de vie et l id?e de monde d alors. Ainsi, on voyait que l ?cole Dom?stica ?tait une institution mod?le, sp?cifique dans sa fonction, qui apporterait ? la ville et, particuli?rement au Rio Grande do Norte, des id?es de civilit?, ordre et progr?s
A pesquisa apresenta um novo olhar para a institui??o escolar Escola Dom?stica de Natal, tentando dar conta da multiplicidade dos atores e pr?ticas envolvidas na escola que melhor definiam e explicavam os fen?menos daquela realidade educativa e das rela??es com o tempo e lugar em que estava inserida. Neste sentido, os conceitos de mem?ria e cultura escolar foram fundamentais para a compreens?o dessas pr?ticas, porque contribu?ram para fazermos uma leitura hist?rico-cultural do conjunto de aspectos institucionalizados na escola, como o seu curr?culo, finalidades, modos de ensinar e aprender, condutas, normas, enfim, o que caracterizavam a sua organiza??o e pr?ticas cotidianas. Sendo a Escola Dom?stica de Natal uma institui??o pioneira no modelo de ensino voltado para a educa??o feminina no Brasil, priorizamos reconhec?-la e circunscrev?-la na sua indel?vel contribui??o ? Hist?ria da Educa??o norte-rio-grandense. Concebida por um modelo de organiza??o escolar europeu para a educa??o feminina, a Escola Dom?stica de Natal foi inaugurada em 1914, tendo como seu criador, o intelectual norte-rio-grandense Henrique Castriciano de Souza. Sua singularidade, divergindo das escolas femininas existentes no RN e no pa?s naquele momento, advinha do modelo escolar adotado, que enfatizava a forma??o de uma mulher voltada para atender aos anseios modernos despontados com o advento da Rep?blica. Esse ide?rio exigia, por parte da escola, a forma??o de um modelo de mulher em seus aspectos moral, f?sico, cultural e intelectual moldados nos ideais da ordem e do progresso. Essa seria uma nova forma de educa??o escolar que poderia favorecer a moderniza??o dos velhos m?todos de ensino, provocando o surgimento de modelos que implicariam numa nova organiza??o pedag?gica nas escolas existentes no Estado e conduziriam a cidade a novos e elevados patamares de cultura e civilidade. Estava presente, tamb?m a representa??o de que, com essa forma??o, a escola contribuiria para que a mulher atuasse na sociedade de forma mais ativa, social e ajust?vel ao meio. As palavras ordem, novo, civilidade, moderno e progresso circulavam e se entrecruzavam com valores arcaicos ainda arraigados e permanentes na vis?o da vida e na id?ia de mundo de ent?o. Assim, percebia-se a Escola Dom?stica como institui??o modelo, espec?fica em sua fun??o, que iria trazer para a cidade e, particularmente para o Estado do RN, id?ias de civilidade, ordem e progresso

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Vieira, Daliana Carla. "Análise da situação financeira da Cooperativa Agroindustrial Lar em relação a 31 cooperativas agropecuárias do estado do Paraná: uma análise aplicando um modelo de previsão de insolvência." Universidade Estadual do Oeste do Parana, 2007. http://tede.unioeste.br:8080/tede/handle/tede/2156.

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The aim of this dissertation was to accomplish an analysis of the financial situation of the Lar Agro-Industrial Cooperative compared to 31 cooperatives from the State of Paraná, through an insolvency prevision model, from the year 2000 to 2004. Thus, some financial indexes of the cooperatives studied were examined in accordance to the standard indexes. The Gimenes and Opazo (2001) insolvency prevision model was used to verify the financial solvency or insolvency situation of the cooperatives. Then the similarity among the group of agricultural cooperatives was analyzed through Cluster Analysis. The results lead to a general conclusion that, in the period analyzed, Lar Agro-Industrial Cooperative presented a highly satisfactory performance, a particular characteristic of this cooperative, due to the fact that high similarities between Lar cooperative and other cooperatives were not verified
O objetivo deste trabalho foi realizar uma análise da situação financeira da Cooperativa Agroindustrial Lar em relação a 31 cooperativas do Estado do Paraná, através de um modelo de previsão de insolvência, no período de 2000 a 2004. Para tanto, examinaram-se alguns indicadores financeiros das cooperativas em estudo a partir da classificação segundo os índices-padrão. Para verificar a situação de solvência ou insolvência financeira das cooperativas foi utilizado o modelo de previsão de insolvência de Gimenes e Opazo (2001). Finalmente, foi analisada a similaridade entre o conjunto das cooperativas agropecuárias por meio da análise multivariada de agrupamento ou Cluster Analysis. Os resultados obtidos permitem concluir, de uma forma geral, que, no período analisado, a Cooperativa Agroindustrial Lar apresentou um desempenho financeiro bastante satisfatório, característica muito particular desta cooperativa, já que não se verificou alta similaridade entre a cooperativa Lar e as demais cooperativas

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Dissertations / Theses on the topic 'LWR models'

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