Teses / dissertações sobre o tema "Contrôle optimisé"
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Thomas, Sylvain. "Contrôle sélectif des états rovibrationnels sous champ laser intense par passage adiabatique optimisé". Dijon, 2002. http://www.theses.fr/2002DIJOS049.
Texto completo da fonteLandry, Jean-François. "Planification optimale discrète et continue : un joueur de billard autonome optimisé". Thèse, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/6681.
Texto completo da fonteSaez, de ibarra martinez de contrasta Andoni. "Dimensionnement et contrôle-commande optimisé des systèmes de stockage énergétique pour la participation au marché de l'électricité des parcs photovoltaïques intelligents". Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT057/document.
Texto completo da fonteThe present PhD deals with the integration of intelligent photovoltaic (IPV) power plants in the electricity markets in an environment subject to free competition. The IPV power plants are those that include energy storage systems to reduce the variability and to provide the entire group a controllability increase. These technical objectives are obtained thanks to the bidirectional exchanging and storing capability that the storage system contributes to, in this case, battery energy storage system (BESS). In order to obtain the maximum profitability of the BESS, the sizing must be optimized together with the control strategy that the BESS will be operated with. In the present PhD, once the most performing battery energy storage technology has been selected, the lithium-ion technology, an innovative IPV power plant electricity market participation process is proposed which optimizes both the sizing and the energy management strategy in the same optimization step. This optimization process together with the electricity market participation has been applied in a real case study, confirming that this procedure permits to maximize the economic profitability of this type of generation
Abdayem, Anthony. "Stratégies de contrôle optimisées pour les convertisseurs multiniveaux modulaires (MMCs) connectés au réseau basse tension". Electronic Thesis or Diss., CY Cergy Paris Université, 2024. http://www.theses.fr/2024CYUN1301.
Texto completo da fonteThe modular multilevel converter (MMC) has emerged as one of the most promising topologies for medium- to high-voltage, high-power applications. Recently, it has also shown potential for applications requiring low voltages, known as mini MMCs, which contain a smaller number of submodules per arm. Key features of MMCs include modularity, voltage and power scalability, fault tolerance, transformer-less operation, and high-quality output waveforms. In recent years, numerous research studies have been conducted to address the technical challenges associated with MMC operation, control, and topology.One of the most significant applications for MMCs is in grid-connected systems. These converters offer the advantage of reducing current and voltage harmonics without the need for bulky passive components. Moreover, MMCs demonstrate reliability due to their structure, which enables them to continue operating even if one or more power switches fail. However, their control is complex due to the numerous switching configurations, necessitating sophisticated control algorithms. This thesis focuses on implementing advanced control techniques to enhance MMC performance. It aims to explore MMCs, improve existing power structures for novel applications, and increase efficiency and reliability through control design and modulation techniques. The research also investigates controlling MMCs using novel Model Predictive Control methods.Specifically, this thesis comprises a series of investigations addressing challenges and enhancing MMC performance across various applications. The first set of studies focuses on a new control design for MMCs, allowing separate control of capacitor voltages in the upper and lower arms. The research also targets single-phase MMCs, enabling control under unbalanced power conditions between the upper and lower arms. Additionally, the study addresses modulation and voltage balancing techniques. A new modulation technique, the Integral Modulation Technique, an advancement of the Nearest Level Modulation Technique, is introduced. A novel sorting algorithm is also proposed to enhance MMC efficiency by reducing the number of commutations per second for existing modulation techniques such as NLM, IM, and PWM.The research extends to fault-tolerant operation in three-phase MMCs, proposing a method that injects DC and frequency harmonic circulating currents to sustain operation in the event of a faulty arm. A significant contribution involves developing a single-horizon finite control set model predictive control (FCS-MPC) algorithm for single-phase MMCs, which outperforms traditional methods in terms of commutations, grid current waveform quality, and capacitor voltage variance. Six FCS-MPC algorithms for MMCs are introduced, offering insights into their performance compared to a classic cascaded control scheme. The thesis concludes with a novel configuration for a Cascaded H-Bridge (CHB) converter designed for renewable energy integration, demonstrating effectiveness through simulations.In summary, this thesis presents a comprehensive exploration of MMCs, addressing control challenges, fault tolerance, modulation techniques, and innovative configurations for renewable energy integration. The findings contribute to advancing MMC technologies in various applications
Passeira, Andrea Verónica Vaz. "Stress laboral na PSP". Master's thesis, Escola Superior de Ciências Empresariais, 2011. http://hdl.handle.net/10400.26/4007.
Texto completo da fonteO presente Estudo foi aplicado a profissionais da polícia do Comando Metropolitano de Lisboa da PSP. O objectivo principal subjacente a este trabalho foi proceder à análise da problemática do stress, nos profissionais da PSP que constituem a nossa amostra. Para tal, a metodologia utilizada consistiu na aplicação de um conjunto de Questionários, designadamente, “Fontes de Stress”, “Sintomas de Stress”, “Estratégias de Coping”, “Empenho Organizacional”, “Locus de Controlo”, “Optimismo”, e por último os dados Sócio-demográficos. O Questionário “Fontes de Stress”, comporta três dimensões de análise: “Falta de Recursos”, “Problemas Organizacionais e Interpessoais” e “Stressores Policiais”. O Questionário “Sintomas de Stress” é composto, igualmente, por três dimensões de análise: “Fadiga Física”, “Esgotamento Cognitivo” e “Exaustão Emocional”. O Questionário “Estratégias de Coping” inclui duas dimensões: “Evitamento” e “Coping Activo”. O Questionário “Locus de Controlo” envolve, igualmente, duas dimensões: “Locus de Controlo Externo” e “Locus de Controlo Interno”. Os restantes Questionários, são unidimensionais. Os resultados obtidos, permitiram verificar que a dimensão das “Fonte de Stress” mais pontuada pelos inquiridos, corresponde aos “Stressores Policiais” e, ao nível dos “Sintomas de Stress”, a dimensão com mais incidência é a “Fadiga Física”. No que concerne às “Estratégias de Coping” mais utilizadas pelos polícias, estas correspondem a Estratégias de “Coping Activo”. Os resultados também demonstraram que, em termos médios, os polícias apresentam um “Empenho Organizacional” moderado, onde a maioria manifesta a predominância de um tipo de “Locus de Controlo Interno” e que se consideram Optimistas. Este estudo comportou ainda a análise das correlações entre o conjunto das subescalas, bem como a análise da influência de variáveis sócio-demográficas sobre as restantes variáveis em análise.
This study was applied to professional police officers from Lisbon's Metropolitan Police (PSP). The main objective of this study was to examine the issue of stress on the PSP professionals that constitute our sample. To this end, the methodology consisted of a set of Questionnaires, namely "Sources of Stress", "Symptoms of Stress", "Coping Strategies”, “Organizational Commitment", "Locus of Control", "Optimism" and finally the socio-demographic data. The Questionnaire "Sources of Stress” comprises three dimensions of analysis: "Lack of Resources", "Interpersonal and Organizational Issues" and "Police Stressors”. The Questionnaire "Symptoms of Stress" is composed equally of three dimensions: "Physical Fatigue", "Cognitive Exhaustion" and "Emotional Exhaustion”. The Questionnaire "Coping Strategies" includes two dimensions: "Avoidance" and "Active Coping". The Questionnaire "Locus of Control" involves also two dimensions: "External Locus of Control" and "Internal Locus of Control”. The remaining questionnaires are unidimentional. The results reflected the view that the police respondents most punctuated dimension of “Source of Stress" is “Police Stressors", and at the level of “Symptoms of Stress”, the dimension with the highest incidence is “Physical Fatigue". With regard to "Coping Strategies" used by most police departments, these strategies correspond to "Active Coping". The results also showed that on average, the police have a moderate "Organizational Commitment", where the most expresses the predominance of one type of "Internal Locus of Control" and are considered Optimistic. This study also focuses the analysis of correlations between all the subscales, as well as analysis of the influence of socio-demographic variables on other variables in the analysis.
Florescu, Adrian. "Gestion optimisée des flux énergétiques dans le véhicule électrique". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00798937.
Texto completo da fonteJia, Ning. "Conception conjointe optimisée de lois de contrôle et d'ordonnancement". Phd thesis, Institut National Polytechnique de Lorraine - INPL, 2009. http://tel.archives-ouvertes.fr/tel-00369354.
Texto completo da fontemodèle (m,k)-firm. Plus particulièrement, nous avons étudié l'impact de distribution de rejets sur la QdC d'une boucle de contrôle et, sur la base des résultats obtenus, nous avons spécifié une méthode de co-conception permettant de déterminer les paramètres (gain) optimaux de la loi de contrôle et les paramètres de la contrainte (m,k)-firm spécifiant le rejet sélectif d'instances. Cette proposition a été validée sur modèles à l'aide de techniques analytiques, par simulation ainsi que grâce à des expérimentations. Notre deuxième objectif est d'étudier le problème de l'ordonnancement d'un ensemble de tâches temps réel réalisant chacune les algorithmes de contrôle dans une application centralisée évolutive. Nous proposons un mécanisme d'ordonnancement qui ajuste en ligne les contraintes
(m,k)-firm des tâches suivant la configuration courante de l'application de manière à ce qu'un critère reflétant la performance globale de l'application soit optimal à tout instant.
Jia, Ning. "Conception conjointe optimisée de lois de contrôle et d'ordonnancement". Electronic Thesis or Diss., Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL004N.
Texto completo da fonteIn this thesis, we study a coordinated approach for the design of control laws and scheduling parameters. The first objective is to propose and evaluate a technique to control the degradation of the quality of control (QoC) by selectively rejecting task or message instances according to the (m,k)-firm model. More specifically, we have studied the impact of the (m,k)-firm packet dropout policy on the QoC of a control loop. Based on the obtained results, we have specified a co-design method for determining the parameters (gain) of the optimal control law and the (m,k)-firm constraint specifying the selective rejet of instances. This proposal was validated by using analytical techniques, simulation and experimentation activities. The second objective is to address the scheduling problem of a set of real-time tasks where each task implements a control law in a centralized scalable application. We proposed a scheduling mechanism which determines on line, according to the current system configuration, a (m,k)-constraint based scheduling strategy to apply to each task so that the criterion reflecting the overall performance of the application is optimal at all times
Adam, Rosalind. "Development of an intervention to optimise cancer pain control". Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=236453.
Texto completo da fontePuel, Benoît. "Conception de traducteurs et techniques multi-éléments optimisés pour le contrôle non destructif ultrasonore". Paris 11, 2010. http://www.theses.fr/2010PA112106.
Texto completo da fonteUltrasonic non destructive testing aims to detect and sizing defects inside, or at the surface, of a mechanical structure using echograms. The design of this inspection can be complex, especially when phased-array techniques are used. These techniques, based on probes made of an array of separately driven elements, have many advantages regarding adaptability and versatility. Nevertheless, they also present risks to generate artefacts, called grating lobes, adverse to the inspection. To solve these problems, especially for the step of the design of inspections, experts usually rely on simulation software, such as the CIVA platform which is developed by the CEA LIST. The presented PhD works propose to automate these parametric studies, since can be both fastidious and complex: using an optimization tool. It has been built by connecting an evolutionary algorithm to simulation modules of CIVA. Moreover, the algorithm has been extended to take into account constraints, to define accuracy of the variables then to solve multi-objective problems. Particular attention has been paid on the reduction of the number of tuning parameters in order to make this tool available to end-users who do not master the models of optimization. To validate the proposed optimization procedure, three kinds of parameters, which have an influence on the performances of inspections, have been handled. Then, probe parameters of arrays design, those defining its position and displacement and those specifying electronic settings, have been optimized for a number of inspections. The results obtained underline the relevance of the tool as able to provide suitable results in a reasonable computational time
Yeomans, Kenneth Alfred. "Time optimised position control with motion constraints". Thesis, University of London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429193.
Texto completo da fonteWattrus, Mark. "Optimised combustion control for different diesel fuels". Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/5455.
Texto completo da fonteKarlsson, Magdalena, e Jessica Segerbrant. "Orealistisk optimism och upplevd kontroll : Studenters bedömningar av risker". Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-8321.
Texto completo da fonteTidigare forskning har visat att människor överskattar chanserna för att positiva händelser ska inträffa dem och underskattar riskerna för att negativa händelser ska inträffa dem jämfört med genomsnittet. Detta kallas orealistisk optimism (OO). En faktor som påverkar detta är grad av upplevd kontroll. Studiens huvudsakliga syfte var att undersöka sambanden mellan upplevd kontroll och OO. I en enkätstudie undersöktes OO och upplevd kontroll för diverse händelser. Deltagarna fick t ex svara på hur sannolikt det är att de utsattes för vissa händelser jämfört med genomsnittet. Händelserna var bl a hälsorelaterade. Deltagarna var studenter från en högskola i Mellansverige, 18 män och 109 kvinnor. OO uppstod för alla händelser utom två. Det fanns vissa samband mellan OO och upplevd kontroll. Nytt med studien är att vissa händelser som i tidigare undersökningar skattats som okontrollerbara i själva verket kan upplevas som delvis kontrollerbara. Sambanden mellan OO och upplevd kontroll bör vidare undersökas.
Worsham, Scott L. "The Effects of Perceived Locus of Control and Dispositional Optimism on Chronic Pain Treatment Outcomes". Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4676/.
Texto completo da fonteImbert, Jean-Paul. "Adaptation du design des visualisations de type supervisions pour optimiser la transmission des notifications classées par niveau d’intérêt". Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0055/document.
Texto completo da fonteAir traffic control is undergoing a great change due to the increase of traffic and the evolution of thecontrol tools. The greater number of aircrafts managed by the controller implies a much greater load ofinformation to deal with and memorize than before. A significant part of accidents’ causes is already dueto the problem of information perception and memorization which is worsened by the size of the controlscreens which are particularly critical concerning the perception of alarms and warnings displayed onthe radar image. The current design in France of those types of alerts which rely on color is controversialand an Aviation Safety bulletin recommended it should be improved. The perception of informationcontributing to a satisfactory situation awareness by the air traffic controllers is central to this thesis whichaims at making sure alarms and relevant information are detected early enough and according to prioritiesand that the corresponding actions are actually performed. To answer the issue at stake our first work focusdealt with the study of the controllers’ task so as to analyze the required information in order to achievecertain objectives and provide a task monitoring agent that could support them. The second work focusdealt with the notifications perception, more specifically in the peripheral vision and the conception ofdesigns such as to improve their perception and the study of their impact on the performance of the task.Thanks to a holistic approach based on the use of an ATC microworld (Laby) and the use of physiologicalsensors we managed to assess several notification designs. Several experiments have been conducted,one using eye-tracking aimed at measuring attention capacity of five designs and their impact on theperformance of the task. The second used neurophysiologic data and aimed at measuring the impact oftwo designs on the work load. The assessed designs enabled to conceive a notification system integratedin a new radar supervision together with the task monitoring agent. The last experiment conducted in thecourse of this work aimed at measuring the impact of this new position of control whose design is situationawareness oriented, on the detection of critical problems. The obtained results show the relevance ofthese new tools and their positive impact on the performance of the task by controllers as well as the needto assess, in a controlled experimental context, the characteristics of notification designs for supervisionvisualization
Viot, Hugo. "Modélisation et instrumentation d'un bâtiment et de ses systèmes pour optimiser sa gestion énergétique". Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0349/document.
Texto completo da fonteThe building sector is forced to reduce its energy consumption in a context of high energy prices and global warming. Proper control of building energy systems can be an important lever to move towards this goal. The main goal of this work is to obtain small size buildings models in order to use it in a controller to improve energy management. The inputs of these models are fed in real-time with available measurements on site. A demonstration building at the IUT Civil Engineering and Sustainable Construction of Bordeaux serves as experimental support for the project. This work consists of four parts. The first one is to make lightweight models based on the electrical analogy and state-space representation to describe the dynamics of the building on upcoming days. The second part concerns the instrumentation of the building because short measurement campaigns are carried out to identify the model parameter values to minimize the gap between model output and measurement. Some sensors are then used for energy management of the building; thus this work also raise the question of the minimum set of sensors. The third address the characterization of the systems used to control air temperature. For an optimal control logic we must be able to link the effect of the command on the interest variable (air temperature). The demonstration building includes two heating systems : floor heating system (FHS) and fan coil units (FC). A dual flow air handling unit (AHU) is used for air renewal. The last part concerns energy management with the use of a predictive controller boarding one of the identified models. This project intends to anticipate the control of long time response capacitive systems as floor heating through knowledge of future disturbances on a prediction horizon of a few hours (occupation, weather). A reactive control is ensured by the fan coil units. Predictive management is compared to more conventional management strategies in simulation and on-site with the demonstrator building. The originality of this work is to propose a method for the establishment of a full control loop (controller/sensor/actuator) and demonstrate an interest in the predictive management of long response time systems in the building sector
Donoso, Parot Martín. "Rediseño del Proceso de Planificación y Control Estratégico en OPTIMISA S.A". Tesis, Universidad de Chile, 2008. http://www.repositorio.uchile.cl/handle/2250/101964.
Texto completo da fonteLibbrecht, Christophe. "Contrôleur évolutif et optimisé pour les miroirs déformables ferrofluidiques dans le cadre de l'optique adaptative". Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/25943.
Texto completo da fonteAdaptive optics is an evolving technology and integrated part of many applications. Its contributions extend from the astronomical imaging to the data transmission in telecommunications domain including the improvement of ophthalmologic diagnostics. Its main asset consists of its deformable mirrors and, thus, its ability to correct a signal degraded by random perturbations. There are many kinds of deformable mirrors. These with a continuous surface and also with several segments. A great variety of methods exists to control the surface geometry: hydraulics, piezoelectric, electrostatic and magnetic systems have been developed in the last years. The most recent creation in adaptive optics is the ferrofluidic mirror. The ferrofluidic mirrors have many advantages. First, their manufacturing cost is very low. Moreover, a simple combination of magnetic fields is required to modify the shape of their surface and can give strong amplitudes of deformation (about millimeter). These mirrors are developed and studied in the COPL laboratory of Université Laval where they are the main target of the actual work. Nowadays the constant increasing number of actuators decrees the development of optimized methods to control deformable mirrors. A captured image or signal can require from some tens to several hundreds of Hertz to be corrected. The calculations must be at their fastest. On other hand, the increasing number of actuators raises a question about what strategy to deploy for getting the best control on the surface of deformable mirrors. Do we use a single controller for all the actuators? Or on the contrary do we need to equip each actuator with a dedicated controller? For any chosen strategy, the most important step is the calibration phase. In adaptive optics, this procedure is quite simple even though it sometimes takes a long time for finding the optimized parameters. What is the best method to calibrate a controller? Is an automatic calibration possible? Can we develop an evolving controller able to adapt to environmental variations without human action. There is some interrogation about the best way to apply th strategy. Can it be more efficient? Are there any limitations? If so, can we solve them? The subject of this document is to answer the previous questions regarding ferrofluidic mirrors. The final purpose of this work is to develop an evolving and optimized controller able to manage systems with several tens as well as several hundreds of actuators and, also, adapt itself to variations of surrounding conditions.
Ziouani, Islam. "Commande hiérarchique optimisé pour les générateurs distribuées dans les microréseaux intelligents". Thesis, CY Cergy Paris Université, 2020. http://www.theses.fr/2020CYUN1083.
Texto completo da fonteThis work focuses on the development of an optimized control scheme for managing the power generated by heterogeneous distributed generators (DGs) and renewable energy sources (RESs) that constituting a smart microgrid.A microgrid is a distributed energy system that gathering a combination of renewable energy sources and distributed generators, as well as local loads. It can exchange power with the utility grid, and it can operate autonomously. The ideal use of a microgrid is to supply remote regions or locations that are unable to access the public grid. Moreover, utility operators become more interested in using microgrids for producing electricity due to their sustainability, reliability, and cost-effective.The DGs such as energy storage devices and diesel generators are dispatchable generations that can adjust their output power according to the load needs, whereas, the RESs such as wind turbines and photovoltaic panels are non-dispatchable generations which are used to exploit their maximum power.In this sense, we have proposed a solution based on the hierarchical approach that consists of three levels, inner, primary and secondary. This solution is able to control DGs in a hybrid microgrid for supplying continuously the local consumers without any interruption and for exchanging a smooth power with the utility grid while exploiting the maximum power from the renewables.The inner control is responsible to regulate the output voltage of each distributed generator which is based on cascaded control and Proportional-resonant controller.The primary control generates the reference voltage of the inner control which its principal role is to coordinate the distributed generators in a decentralized manner to share the active and the reactive power demand among them.The secondary control compensates the voltage deviation toward the nominal values as well as it synchronizes the microgrid voltage with the main grid for a smooth transition
Knox, Oliver Gimli Gunning. "Exploiting nitrate respiration to optimise antagonistic control of root disease in soil". Thesis, University of Aberdeen, 2000. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602312.
Texto completo da fonteTani, Fatima. "Periodic control of multi-specific bioreactors in order to optimize their performances". Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS058.
Texto completo da fonteThe contributions of the thesis are in two parts. We first consider a periodic optimal control problem governed by a one-dimensional system, linear with respect to the control variable and satisfying an integral constraint. We give sufficient conditions for over-yielding that consists inimproving the criterion at steady state with a constant control ū by considering a periodic control u with average value equal to ū. We use Pontryagin’s Maximum Principle to provide the optimal synthesis of periodic strategies satisfying the integral constraint. Convexity and monotonicity assumptions are playing a crucial role. Theses results are applied to the chemostat model where the goal is to improve the averaged water quality using periodic removal rate under integral constraint on the total amount of water to be treated. We prove also a duality property allowing to consider a dual problem, which consists in improving the total quantity of treated water over a given time period, compared to steady-state, by considering periodic operation under integral constraint on the water quality. Based on these results, we proposed a robust algorithm that distinguishes between two types of kinetics and combines stationary and periodic operations.In another context, we show how resilience in the chemostat model in presence of a species invader can be guaranteed in a weak sense. We give aconstruction of a time varying removal rate allowing the resident speciesto come back above a fixed threshold, an infinite number of times, eventhough the invader can never be totally eradicated. With this control, weshow that the time spent by the resident species above the threshold is ofinfinite measure, and thus the control is said to be "weakly resilient". Weshow that there exists an unique periodic solution of the system associatedwith such a time-varying removal rate and conjecture that any other trajectory converges asymptotically to this periodic solution. Finally, we show that this can be achieved by a hybrid feedback controller based on very few knowledge on the growth characteristics of the species
Zozaya, Carole. "Déterminants des trajectoires de détresse pendant la première année qui suit l'annonce d'un cancer primitif ou récidivant". Thesis, Bordeaux 2, 2011. http://www.theses.fr/2011BOR21811/document.
Texto completo da fonteIntroduction. Emotional distress is a significant problem for patients with cancer experience and particularly recurrence. We aim to (a) identify distinct trajectories of psychological distress in the first year after primitive cancer diagnosis or recurrence treated with chimiotherapy and (b) explore possible determinants of these trajectories, that is personal (neuroticism, optimism) and transactional (control, coping, social support, quality of relation) characteristics.Method. 286 patients were assessed after diagnosis in the reentry phase of treatment and in the survivorship phase: 3, 6 and 9 months after the diagnosis announce. Personality (neuroticism and optimism) and transactional variables (coping, social support and quality of relation) have been measured. Psychological distress was assessed with HAD scale.Results. There were four trajectories of distress: a group “resilient” (40.1%) that experienced no or low distress, a group “delayed” (37.63%) that experienced no signifcative distress but levels of depression and emotional distress, which tend to increase slightly and linearly during the first three months and remain stable and below the thresholds beyond, a group “recovery” (19.58%) that experienced signifcative distress, which tend to increase slightly and linearly during the first three months and remain stable and below the thresholds beyond, and a group “chronic” (2.77%) that experienced chronic distress. Variables of Personality and transactional variables could distinguish the distress trajectories. No significant results have been found with perceived control Conclusion. Most patients were not distressed or only temporarily so, in response to primitive cancer or recurrence. However, emotional distress of patients has not decreased during the first year after primitive cancer diagnosis or recurrence
Yilmaz, Fikriye Nuray. "Space-time Discretization Of Optimal Control Of Burgers Equation Using Both Discretize-then-optimize And Optimize-then-discretize Approaches". Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613388/index.pdf.
Texto completo da fonteLaure, Chloé. "Synthèse orthogonale de polymères à séquences contrôlées, optimisés pour la lecture de données digitales". Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF080.
Texto completo da fonteInformation-containing sequenced-controlled polymers were synthesized by an « AB+CD » supported iterative strategy, involving two orthogonal reactions. This approach allowed the protecting-group-free synthesis of monodisperse sequence-controlled poly(alkoxyamine amide)s and poly(alkoxyamine triazole)s. The poly(alkoxyamine amide)s were synthesized on different supports - solid, soluble, and fluorinated – and also by a convergent strategy. Besides, the synthesis of the poly(alkoxyamine triazole)s allowed studying the SpAAC, involving a cyclooctyne and an azide for a copper-free formation of a triazole. The structure of the obtained polymers also allowed an MS/MS sequencing of the binary code implemented along the chains through functional groups coding for 0 or 1, thanks to the presence of weak linkages. Furthermore, the poly(alkoxyamine amide)s were optimized for data encoding, by synthesizing molecular barcodes to increase storage capacity, and by an induced polydispersity to decode the polymers without fragmentation
Badreddine, Rim. "Gestion énergétique optimisée pour un bâtiment intelligent multi-sources multi-charges : différents principes de validations". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00780209.
Texto completo da fonteNinove, Laetitia. "Approche optimisée du diagnostic moléculaire des infections virales : application à la pandémie de grippe A/H1N1". Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX20652/document.
Texto completo da fonteMolecular biology techniques have taken an important role in the direct diagnosis of viral pathogens over the last 20 years. Our work focused on establishing and developing a platform for molecular diagnosis in the laboratory of Virology (Timone Hospital) to meet the demands and constraints of diagnosis in hospitals. The organization of this platform required several steps: prevention of contamination risks, aliquoting and storage of reagents, automation techniques of nucleic acid extraction, development of synthetic positive controls and internal controls and optimization of PCR protocols. This optimized approach of the molecular diagnosis of viral infections has particularly been applied to the detection of pandemic influenza A/H1N1v in hospital laboratories for routine and emergency "Point Of Care." The implementation of this platform has significantly improved molecular diagnosis in our laboratory. It currently allows us to detect a large number of pathogens (> 80) and perform tests in a high-throughput (≈ 40,000 tests per year). In total, this platform is at the heart of the laboratory capacity to react quickly to emerging events by rapidly implementing standardized procedures. These techniques have been transferred to many other partners’ laboratories nationally and internationally. We are now considering its use in a syndromic approach including the development of the diagnosis of respiratory viruses
Gruber, Robert Edward. "Optimism vs. locking : a study of concurrency control for client-server object-oriented databases". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10762.
Texto completo da fonteIncludes bibliographical references (p. 167-171).
by Robert E. Gruber.
Ph.D.
Dogan, Ebru Burcu. "Illusion Of Control, Optimism Bias And Their Relationship To Risk-taking Behaviors Of Turkish Drivers". Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607562/index.pdf.
Texto completo da fonterisk-taking behavior among Turkish drivers. A total of 307 drivers completed the Driver Behavior Questionnaire, the Driver Skills Inventory, the Optimism Bias Scale, the Multidimensional Traffic Locus of Control Scale, and Rotter&rsquo
s Internality Externality Scale. In chapter one, comparison between perceived risk as driver and perceived risk as passenger demonstrated existence of illusion f control among drivers. Drivers&rsquo
risk assignments were different when imagining themselves as drivers and passenger. Illusion of control was found to be related to the total number of accidents, especially involvement in active accidents. This indicates a positive relationship between illusion of control and risk-taking behavior. In the second chapter, optimism bias was found in drivers&rsquo
risk likelihood estimations for accident involvement in the future. Drivers estimated their risk of being involved in four types of accidents as less than an average driver. Optimism bias was related to self-reported violations and strong evaluation of driving and safety skills as strong. Young and novice drivers were more realistic in their risk estimations. In the third chapter, relationship between locus of control and risk-taking was investigated. Only fate scale correlated with violations. Drivers who attribute accident causes to fate were more likely to commit violations. The limitations of the current research and implications for further research were discussed.
Sahraoui, Sofiane Ahmed. "Un système d'aide à la décision pour une amélioration optimisée de la performance industrielle". Chambéry, 2009. http://www.theses.fr/2009CHAMS018.
Texto completo da fonteIncreasing productivity implies major socio-economical stakes and confers a key role to industrial performance diagnosis and improvement tasks in the framework of production systems control and organization management. Actually, these problems of performance improvement and performance management require of multi criteria decision-making support systems, in our case, it is based with the methodology PETRA. In our framework, industrial performances are thus defined in terms of numerous and multi-level criteria to b synthesized for overall improvement purposes. The overall performance is modeled as the aggregation elementary performances. A fuzzy Choquet integral aggregation operator is introduced. It allows expressing an overall performance according to the relative importance of criteria and interactions between elementary expressions. A decision-making support is proposed to quantify performances improvement, diagnose explain why an improvement failed, reach the expected objectives in an optimal way. These formal issues are then derived into multi criteria decision-making mathematical problems related to industrial performance management and diagnosis. The related solving methods are integrated into the software tool GeniPlus. GeniPlus is an original contribution to performances management in terms of information processing. GeniPlus has been tested at Bosch Rexroth SAS Fluidtech group specialized in pneumatics and hydraulics
Lee, Erik Ryan. "SET-WET: A Wetland Simulation Model to Optimize NPS Pollution Control". Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35222.
Texto completo da fonteMaster of Science
Donnelly, Kiely M. "Optimism as a Potential Moderator of the Effects of Emotional Distress on Seizure Control in Adults with Temporal Lobe Epilepsy". University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1265990186.
Texto completo da fonteGraci, Gina M. "Optimism, Health Locus of Control, and Quality of Life of Women with Recurrent Breast Cancer". Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278130/.
Texto completo da fontePohl, Reinhard, e Antje Bornschein. "A management system to optimize reservoir control in the case of floods". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-160683.
Texto completo da fonteBooysen, Walter. "Reducing energy consumption on RSA mines through optimised compressor control / Walter Booysen". Thesis, North-West University, 2010. http://hdl.handle.net/10394/4094.
Texto completo da fonteThesis (M.Ing. (Electrical Engineering))--North-West University, Potchefstroom Campus, 2010
Pohl, Reinhard, e Antje Bornschein. "A management system to optimize reservoir control in the case of floods". Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A28536.
Texto completo da fonteRamaswamy, Nikhil. "Development of control strategies to optimize the fuel economy of hybrid electric vehicles". Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51887.
Texto completo da fonteMontull, Daniel José María. "Adapting the Decision Support System CPOWeeds to optimize weed control in northern Spanish conditions". Doctoral thesis, Universitat de Lleida, 2016. http://hdl.handle.net/10803/400269.
Texto completo da fonteEn este trabajo, se pone a punto un Sistema de Ayuda a la Decisión (SAD) y se plantea un manejo campo a campo. Las ventajas del uso de los SAD son económicas y medioambientales porque optimizando el uso de herbicidas es posible, en algún caso, disminuir las dosis aplicadas. El Crop Protection Online (CPO) es un SAD danés que optimiza el control de malas hierbas recomendando soluciones específicas concretas para cada situación que se viene desarrollando desde la década de 1980. CPOWeeds es una versión del CPO ajustada para las condiciones del Nordeste de España. Todos los tratamientos del CPOWeeds se compararon con tratamientos Estándar, recomendados por técnicos de cada zona. En el 84,2% de los casos, las eficacias obtenidas fueron iguales o mayores que las predichas y se alcanzó siempre un nivel de control satisfactorio. En los cinco ensayos en campo, los rendimientos tendieron a ser superiores utilizando el CPOWeeds. Por tanto, se concluye que el CPOWeeds permite optimizar la aplicación de herbicidas con una gran robustez para las condiciones agroclimáticas del noreste de España, con un potencial de reducción de uso de herbicidas de al menos un 30%. Por tanto, este SAD puede ser una herramienta muy importante dentro del Control Integrado de Malas hierbas.
In this work, a Decision Support System (DSS) is developed to make a Site-Specific Crop Management (SSCM). The advantages of the use of DSS are both economical and environmental because, by optimising plant protection products, it is in some cases possible to reduce the applied doses. The Danish decision support system Crop Protection Online (CPO) optimizes herbicide weed control because it recommends specific herbicide solutions to achieve a required level of control. It has been developed since 1980's. CPOWeeds is a version of CPO adjusted to the conditions in Spain. All CPOWeeds treatments were compared to the efficacies obtained with standard herbicide treatments decided by local advisors. The predictions from CPOWeeds were compared to the achieved efficacies in the field trials for nine weed species at different developmental stages. In 84.2% of the comparisons the obtained efficacies were equal to or higher than the predicted ones Moreover, CPOWeeds achieved a satisfactory control level. In all five tests carried out in commercial wheat and barley fields, yield tended to be higher using the CPOWeeds. It was concluded that the use of CPOWeeds allowed the optimisation of the herbicide application with a very high robustness. The recommendations were satisfactorily for the conditions of Spain and have the potential to decrease the amount of applied herbicides by at least 30%. Therefore, CPOWeeds can be an important tool in Integrated Weed Management.
Missaoui, Badreddine Rim. "Gestion Énergétique optimisée pour un bâtiment intelligent multi-sources multi-charges : différents principes de validations". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00742941.
Texto completo da fonteWang, Yuanlin [Verfasser]. "Contributions to optimize the control of Permanent Magnet Synchronous Machine Drives / Yuanlin Wang". Aachen : Shaker, 2017. http://d-nb.info/1138177164/34.
Texto completo da fonteAorith, Hawa. "Efficiency optimised control of interior permanent magnet machine drives in electric vehicle applications". Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/8161/.
Texto completo da fonteWeberg, Matthew Aaron. "Analysis of Grass Carp Dynamics to Optimize Hydrilla Control in an Appalachian Reservoir". Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/52022.
Texto completo da fonteMaster of Science
Koc, Mikail. "Efficiency optimised control of interior mounted permanent magnet machines for electric vehicle traction". Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15880/.
Texto completo da fonteChrun, Tiphany. "Développement d’un vaccin à ADN optimisé contre le virus de la fièvre de la vallée du Rift chez le mouton". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLA004/document.
Texto completo da fonteThe Rift valley fever virus (RVFV) is a mosquito-borne virus that mainly affect ruminants in Africa, resulting in economic burden. There is currently no treatment and only vaccine for veterinary use against the RVFV are available. The development of new and safer vaccine is urgently needed due to the risk of introduction of this arbovirus to other continents. In the present work, we developed an optimized DNA vaccination against RVFV using a plasmid encoding the ectodomain of surface glycoprotein Gn (eGn) of RVFV into the skin with plasmid adjuvant encoding GM-CSF and electroporation in sheep. We further optimized the DNA vaccination using dendritic cell targeting strategy with a plasmid encoding a single chain fragment variable (scFv) fused with eGn directed to two DC receptors, DEC205 and CD11c. The efficacy of the vaccines were tested in the sheep, the natural host and in the mouse model to investigate the mechanism of protection. In both models non-targeted eGn vaccine confer a better clinical protection and higher non-neutralizing antibody production than DC-targeted vaccine. However, in both models eGn targeting to DEC205 differentially affected the immune response and induced a partial protection after a challenge. We further demonstrated that non-neutralizing antibodies induced by native eGn protect mice by passive transfer. The mechanism mediated by these antibodies remains to be investigated. Overall, this work indicates the proof of concept that DNA vaccine can confer protection against the RVFV in the sheep
Adomdza, Gordon. "Why Do Inventors Continue When Experts Say Stop? The Effects of Overconfidence, Optimism and Illusion of Control". Thesis, Waterloo, Ont. : University of Waterloo, 2004. http://etd.uwaterloo.ca/etd/gkadomdz2004.pdf.
Texto completo da fonte"A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Applied Science in Management Sciences." Includes bibliographical references.
Jarrett, Lisa M. "Coping with headache, an exploration into the role of headache locus of control, dispositional optimism, and neuroticism". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0004/MQ45065.pdf.
Texto completo da fonteGraci, Gina. "Optimism, Health Locus of Control, and Quality of Life of Women with Initial versus Recurrent Breast Cancer". Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc2803/.
Texto completo da fonteRuderman, Cimi Perryl. "The relationship between weight loss and locus of control, possible selves, self-esteem, anxiety and optimism/pessimism". CSUSB ScholarWorks, 1990. https://scholarworks.lib.csusb.edu/etd-project/779.
Texto completo da fonteDyachuk, Eduard. "Load diagnostic of power lines to control and optimize the utilization of wind energy". Thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-10090.
Texto completo da fonteShivakumar, Shyam. "Use of smart buildings technology to optimize indoor climate control in local government buildings". Thesis, Shivakumar, Shyam (2021) Use of smart buildings technology to optimize indoor climate control in local government buildings. Masters by Coursework thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/63974/.
Texto completo da fonteHand, Michael Philip. "Psychological resilience: The influence of positive and negative life events upon optimism, hope, and perceived locus of control". ScholarWorks, 2004. http://scholarworks.waldenu.edu/dilley/11.
Texto completo da fonte