Bibliografie tematiche / Contrôle optimisé

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Letteratura scientifica selezionata sul tema "Contrôle optimisé"

Autore: Grafiati
Pubblicato: 9 novembre 2024

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Articoli di riviste sul tema "Contrôle optimisé"

1

Soulie, Pierre-Jean, Michel Le Gall e Jany Volpi. "Contrôle de l’incisive supérieure en technique de glissement optimisé". International Orthodontics 4, n. 4 (dicembre 2006): 443–54. http://dx.doi.org/10.1016/s1761-7227(06)70263-7.

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Plamann, K., F. Aptel, N. Château, C. Crotti, F. Deloison, F. Druon, P. Georges et al. "Greffes de cornée automatisées par laser femtoseconde optimisé et système de contrôle aberrométrique". IRBM 31, n. 2 (maggio 2010): 97–100. http://dx.doi.org/10.1016/j.irbm.2010.02.011.

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Jaffiol, Claude, e Pierre Godeau. "Les complications du diabète de type 2 exigent une prévention multifactorielle qui passe obligatoirement par un contrôle optimisé de l’équilibre glycémique". Bulletin de l'Académie Nationale de Médecine 199, n. 7 (ottobre 2015): 1211–13. http://dx.doi.org/10.1016/s0001-4079(19)30859-3.

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4

Balta, Evangelia. "La Cour des comptes et la réforme du contrôle financier public en Grèce". Revue française de finances publiques N° 166, n. 2 (6 maggio 2024): 165–81. http://dx.doi.org/10.3917/rffp.166.0165.

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La Cour des comptes, qui fonctionne sans interruption depuis près de deux siècles, est l’institution la plus ancienne de l’histoire de l’État grec. Ses perspectives d’évolution constituent un défi, compte tenu du nouveau cadre budgétaire européen et des pathologies pérennes de l’administration publique du pays. La présente étude met en lumière les réformes introduites par une législation récente, réformes qui modernisent la Cour des comptes en la dotant, non seulement d’une organisation optimisée, mais aussi d’un fonctionnement nouveau et d’un mandat de contrôle élargi.
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Guillot, B. "Comment optimiser le contrôle des berges d’exérèse en chirurgie carcinologique cutanée ?" Annales de Dermatologie et de Vénéréologie 134, n. 1 (gennaio 2007): 20–21. http://dx.doi.org/10.1016/s0151-9638(07)88983-6.

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Paillard, Thierry, Mohamed Abdelhafid Kadri, Merbouha Boulahbel Nouar e Frédéric Noe. "Une période d’échauffement optimise le contrôle postural, mais requiert quelques minutes de récupération". Neurophysiologie Clinique 47, n. 5-6 (dicembre 2017): 351–52. http://dx.doi.org/10.1016/j.neucli.2017.10.040.

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ALI, Usman, Edmund CHADWICK e Oliviu SUGAR-GABOR. "An Optimisation of a Chordwise Slot to Enhance Lateral Flow Control on a UCAV". INCAS BULLETIN 14, n. 4 (2 dicembre 2022): 3–17. http://dx.doi.org/10.13111/2066-8201.2022.14.4.1.

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This research aims to optimise a chordwise slot so that lateral flow control of a flying wing configuration can be enhanced. This was achieved by maximising the airflow rate over the trailing edge control surfaces of the wing. A higher rate of airflow over the trailing edge control surfaces will increase the operationality of control surfaces, resulting in enhanced lateral control of the air vehicle at medium to high angles of attack. Four variables describing the chordwise slot are identified for numerical optimisation. They are: location, width, length, and angle of trajectory of chordwise slot relative to freestream. The results of the airflow rate for the wing with an optimised chordwise slot are compared with a baseline clean configuration. The flying wing configuration with a chordwise slot has shown a higher mass flow rate over the control surfaces of the wing in comparison to the baseline clean configuration, demonstrating that an optimised chordwise slot can be implemented on a flying wing configuration as it successfully controls the lateral flow by maximising the flow rate over the trailing edge control surfaces.
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Can, Emre, e Mehmet Bozca. "Optimising the Geometric Parameters of a Gear in a Tractor Transmission Under Constraints Using Kisssoft". Acta Mechanica et Automatica 17, n. 2 (19 marzo 2023): 145–59. http://dx.doi.org/10.2478/ama-2023-0016.

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Abstract We optimise the speed gears in a tractor transmission with KISSsoft software under three constraints: input power torque, transmission system volume and the gear ratio for each speed. This study aimed to optimise the module, face width, gear quality, centre distance, number of teeth, helix angle, addendum modification coefficient and pressure angle for each speed while considering the above constraints based on an optimisation chart. Tooth bending stress, tooth contact stress, contact ratio and specific sliding were considered during optimisation. Additionally, the effects of changes in a module on the gear profiles, overlap ratio, number of teeth and weight of the gear pair were examined. Strength calculations of gear pairs that were optimised and defined for all geometric parameters with KISSsoft were calculated with the mathematical model described in ISO 6336, and results were then compared. Finally, backlash was minimised for all gear pairs as defined with geometric parameters, and all dimensions and tolerances were determined for gear inspection after manufacturing. A concept design was also presented. We conclude that both the KISSsoft results and mathematical model results are within the range of the target value.
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Jouffe, Yves, Diego Carvajal e Alejandra Lazo. "Prends soin du métro. Le contrôle-soin, forme émergente des régulations et menaces souterraines". urbe. Revista Brasileira de Gestão Urbana 7, n. 2 (agosto 2015): 167–81. http://dx.doi.org/10.1590/2175-3369.007.002.se02.

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Le métro de Santiago a subi une dégradation significative de ses conditions de transport du fait de son intégration au Transantiago, le réseau de bus urbains. L’opérateur du métro a donné beaucoup de visibilité à ses dispositifs de contrôle des nouvelles masses d'usagers : barrières optimisées, signalétique omniprésente, agents démultipliés, etc. L’étude du discours officiel de l’entreprise et surtout l’observation ethnographique de ces dispositifs révèlent que les modalités de contrôle ont elles-mêmes évoluées. En plus de la menace légale exercée contre les étrangers et de la régulation des flux par une discipline des corps, un contrôle-soin s’exerce sur une population à protéger : la population qui bénéficie du soin de l'opérateur lui est redevable d'un contre-soin. Le contrôle-soin constitue non seulement une modalité émergente de contrôle mais aussi la forme générale du contrôle dans le métro de Santiago.
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Bourguignon, Laurent, Gildas Rendu, Stéphanie Chantel, Pascal Maire e Michel Ducher. "Comment optimiser le contrôle pharmaceutique de la dispensation nominative hebdomadaire en gériatrie ?" Le Pharmacien Hospitalier 42, n. 169 (giugno 2007): 69–74. http://dx.doi.org/10.1016/s0768-9179(07)90066-8.

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Più fonti

Tesi sul 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.

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Landry, Jean-François. "Planification optimale discrète et continue : un joueur de billard autonome optimisé". Thèse, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/6681.

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Le sujet de Thèse de ce doctorat consiste en l'élaboration de méthodes pour la planification dans les domaines avec aspects continus, discrets et stochastiques. Cette classe de problème, bien qu'assez générale, ne comporte pas pour l'instant de solution efficace et est souvent traitée de façon discrète plutôt que continue afin d'y appliquer les approches existantes. L'aspect stochastique apporte une difficulté supplémentaire à la recherche d'un plan optimal, et rend le problème d'autant plus intéressant. L'ensemble des approches et méthodes proposées dans cette Thèse sont avant tout appliquées au jeu du billard, tout en gardant dans l'esprit qu'une généralisation permettrait son application à d'autres problèmes similaires. En un premier lieu, une classification de ce type de problème par rapport aux recherches existantes sera effectuée, suivie d'une courte revue des approches actuelles possiblement applicables pour la recherche d'une solution acceptable. Un modèle général développé dans le contexte du jeu du billard sera présenté, ainsi que quelques indices sur la façon de le résoudre à l'aide de la programmation dynamique. Deuxièmement, un modèle pour une approche à deux-couches sera proposé, utilisant un contrôleur robuste profitant de la finesse qui peut être exploitée des techniques d'optimisation non-linéaire. Finalement, le modèle à deux-couches sera raffiné et quelques heuristiques de planifications seront proposée, afin de guider le contrôleur de façon à déterminer un plan efficace. On terminera à l'aide d'une synThèse des résultats et une discussion sur les perspectives futures.
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Saez, 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.

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L’objet de cette thèse est l’intégration des parcs photovoltaïques intelligents au marché de l’électricité dans un environnement de libre concurrence. Les centrales photovoltaïques intelligentes sont celles qu’incluent systèmes de stockage pour réduire sa variabilité et en plus fournir à l’ensemble une plus grande contrôlabilité. Ces objectives techniques sont obtenues grâce à la capacité bidirectionnelle d’échange et stockage d’énergie qu’apportent les systèmes de stockage, dans ce cas, les batteries. Pour obtenir la rentabilité maximale des systèmes de stockage, le dimensionnement doit être optimisé en même temps que la stratégie de gestion avec laquelle le système de stockage est commandé. Dans cette thèse, une fois la technologie de stockage plus adapté à l’application photovoltaïque est sélectionnée, à savoir la technologie de lithium-ion, une participation innovatrice de part des parcs photovoltaïques intelligents dans le marché de l’électricité est proposée qui optimise à la fois le dimensionnement et la stratégie de gestion d’une manière simultanée. Ce processus d'optimisation ainsi que la participation au marché de l'électricité a été appliquée dans un cas d’étude réel, ce qui confirme que cette procédure permet de maximiser la rentabilité économique de ce type de production
The 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
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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.

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Le convertisseur modulaire multiniveaux (MMC) s'est imposé comme l'une des topologies les plus prometteuses pour les applications à moyenne et haute tension ainsi qu'à haute puissance. Récemment, il a également montré son potentiel pour des applications nécessitant de faibles tensions, appelées mini MMCs, qui contiennent un plus petit nombre de sous-modules par bras. Les caractéristiques clés des MMCs incluent la modularité, l'évolutivité en tension et en puissance, la tolérance aux pannes, le fonctionnement sans transformateur et des formes d'onde de sortie de haute qualité. Ces dernières années, de nombreuses études de recherche ont été menées pour aborder les défis techniques liés au fonctionnement, au contrôle et à la topologie des MMCs.L'une des applications les plus importantes des MMCs se trouve dans les systèmes connectés au réseau. Ces convertisseurs offrent l'avantage de réduire les harmoniques de courant et de tension sans avoir besoin de composants passifs encombrants. De plus, les MMCs se révèlent fiables grâce à leur structure, qui leur permet de continuer à fonctionner même en cas de défaillance d'un ou plusieurs interrupteurs de puissance. Cependant, leur contrôle est complexe en raison du grand nombre de configurations de commutation, nécessitant des algorithmes de contrôle sophistiqués. Cette thèse se concentre sur la mise en œuvre de techniques de contrôle avancées pour améliorer les performances des MMCs. Elle vise à explorer les MMCs, à améliorer les structures de puissance existantes pour de nouvelles applications, et à accroître l'efficacité et la fiabilité grâce à des techniques de conception de contrôle et de modulation. La recherche explore également le contrôle des MMCs à l'aide de méthodes de contrôle prédictif modélisées (MPC) innovantes.Plus précisément, cette thèse comprend une série d'études abordant les défis et améliorant les performances des MMCs dans diverses applications. Le premier ensemble d'études porte sur une nouvelle conception de contrôle pour les MMCs, permettant le contrôle séparé des tensions des condensateurs dans les bras supérieur et inférieur. La recherche cible également les MMCs monophasés, permettant le contrôle en conditions de déséquilibre de puissance entre les bras supérieur et inférieur. De plus, l'étude traite des techniques de modulation et d'équilibrage de tension. Une nouvelle technique de modulation, la technique de modulation intégrale (IM), une avancée par rapport à la technique de modulation au niveau le plus proche (NLM), est introduite. Un nouvel algorithme de tri est également proposé pour améliorer l'efficacité des MMCs en réduisant le nombre de commutations par seconde pour les techniques de modulation existantes telles que NLM, IM et PWM.La recherche s'étend également à l'exploitation en tolérance aux pannes dans les MMCs triphasés, proposant une méthode qui injecte des courants circulants harmoniques de fréquence et de courant continu pour maintenir le fonctionnement en cas de défaillance d'un bras. Une contribution importante consiste à développer un algorithme de contrôle prédictif modélisé à ensemble fini à horizon unique (FCS-MPC) pour les MMCs monophasés, qui surpasse les méthodes traditionnelles en termes de commutations, de qualité des formes d'onde de courant de réseau et de variation des tensions des condensateurs. Six algorithmes FCS-MPC pour les MMCs sont introduits, offrant des perspectives sur leurs performances par rapport à un schéma de contrôle en cascade classique. La thèse se termine par une configuration innovante pour un convertisseur à ponts en H en cascade (CHB), conçu pour l'intégration des énergies renouvelables, démontrant son efficacité à travers des simulations
The 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
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Passeira, Andrea Verónica Vaz. "Stress laboral na PSP". Master's thesis, Escola Superior de Ciências Empresariais, 2011. http://hdl.handle.net/10400.26/4007.

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Dissertação de Mestrado em Segurança e Higiene no Trabalho
O 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.
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Florescu, Adrian. "Gestion optimisée des flux énergétiques dans le véhicule électrique". Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00798937.

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Ce travail a trait à la gestion des flux énergétiques électriques au sein du réseau embarqué d'un véhicule électrique. Les éléments constitutifs de la chaîne électrique ont été d'abord modélisés à des fins de commande et de simulation. Il est visé ici la minimisation du stress des batteries au plomb via une hybridation avec des supercondensateurs. Deux familles de lois de commande ont été conçues et développées, à savoir des lois de type " fréquentielles " et des lois optimales de type " Linéaires Quadratiques Gaussiennes ". Un banc de test temps réel hybride a été architecturé afin de tester ces lois. Ce banc de test a pour noyau deux simulateurs temps réel (RT-LAB et dSPACE). Une partie de la chaîne de puissance est soit émulée par des sources contrôlées ou réalisée via des maquettes à échelle réduite mais à facteur de similitude respecté. Les essais sur le banc de test ont permis d'obtenir des résultats satisfaisants et encourageants qui corroborent la théorie.
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Jia, 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.

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Le cadre de ce travail est l'étude coordonnée de lois de contrôle et d'ordonnancement. Le premier objectif est de proposer et évaluer une approche de contrôle de la dégradation de la Qualité de Contrôle (QdC) par rejet sélectif d'instances de tâches ou de messages selon le
modèle (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.
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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.

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Abstract (sommario):
Le cadre de ce travail est l’étude coordonnée de lois de contrôle et d’ordonnancement. Le premier objectif est de proposer et évaluer une approche de contrôle de la dégradation de la Qualité de Contrôle (QdC) par rejet sélectif d’instances de tâches ou de messages selon le modèle (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
In 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
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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.

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Introduction: Cancer incidence and prevalence rates are increasing and pain is the most frequent complication of cancer. Cancer pain can have detrimental effects on a patient's social function, mood, and quality of life. Pain is the most frequent symptom to prompt unscheduled medical care in patients with established cancer, and is an important reason for hospitalisation. There are aspects of cancer pain management which involve potentially modifiable patient and healthcare professional behaviours. Patients can have problems reporting pain, communicating about pain with healthcare professionals, using medications effectively, and getting help when problems arise. Healthcare professionals do not always assess pain adequately or prescribe optimally. The aim of this project was to develop an intervention to support patients and professionals in improving cancer pain control. Methods: An Intervention Mapping (IM) approach was taken to intervention development. Current challenges of managing cancer pain and potential solutions were investigated through systematic literature review and qualitative investigations with patients, caregivers, and professionals. The systematic literature review investigated whether patient reported measurements of pain could be collected and fed back to patients and/or healthcare professionals to improve cancer pain management, and described the components of such interventions. Medline, EMBASE, and CINAHL databases were searched from inception to identify randomised and non-randomised controlled trials. Titles, abstracts, and full text articles were dual screened, and assessed independently for risk of bias according to the Cochrane criteria by two researchers. Meta-analysis was performed for studies which reported changes in pain intensity on a zero to ten point scale, and a narrative synthesis was conducted. Qualitative semi-structured interviews with patients with cancer pain, their caregivers, and healthcare professionals and focus groups with healthcare professionals investigated current approaches to cancer pain management, and the challenges and problems experienced. Potential solutions and intervention ideas were explored, along with perceived opportunities for digital technologies to enhance cancer pain management. Qualitative data were analysed using a combination of Framework and thematic analysis. Existing literature and findings from the original qualitative research were used to model the problem, and through the Intervention Mapping approach; behaviour change theory was systematically applied to produce a digital intervention. Prototypes were pre-tested with professional stakeholders. Macmillan nurses recruited patients (with or without a caregiver) from their caseload who had cancer pain and were using strong opioids to provide early indications about the feasibility of the intervention. Nurses also recruited the patient's GP. Patients were invited to interact with the app over a four week period. Weekly patient analgesic and symptom reports were sent to their GP and nurse. At least one consultation with their Macmillan nurse was scheduled in which patient reported data could be discussed. Patients were interviewed by telephone on a weekly basis and all participants were interviewed at the conclusion of the study. All qualitative enquiries were analysed using a combination of Framework and thematic analysis. Patient generated symptom report data were analysed descriptively. Results: Literature review: Twenty nine reports of 22 unique trials of 20 interventions were included in the review. Patient reported outcome measures were used in four main ways: (1) to provide reports about pain and related symptoms to professionals (with the intention of increasing professional awareness of unrelieved symptoms); (2) to tailor patient education about self-management strategies and how to communicate about pain; (3) to prompt contact between a patient and professional when pain is above a set threshold; and (4) to link pain treatments to the severity of pain experienced by the patient via algorithmic management guidelines. Meta-analysis of 12 trials showed that average pain intensity was reduced by half a point out of ten in intervention group participants compared to controls. This result was statistically significant, mean difference -0.59 (95% CI -0.87, -0.30). Qualitative investigations with key stakeholders: Interviews were held with 14 patients, including six with their caregivers present. All patients had locally advanced or metastatic cancer. Nineteen multidisciplinary professionals took part in interviews (15 face to face and four telephone interviews), and 12 took part in one of two focus groups. Themes were organised within two categories: 'the work of managing cancer pain and its context', and 'digital tools to help with this work'. Patients gave accounts of cancer and cancer-related pain as burdensome conditions. Complete alleviation of pain was not the main goal for most patients. Pain was considered alongside functional and activity goals, overall symptom burden, and medication side effects. Professionals recognised patients' individual goals to varying extents. Most patients were regularly using digital technologies. Patients had ideas for digital pain management tools as sources of information and knowledge, to help with medicines management (particularly for reminders and prompts), and as symptom monitoring tools which could stimulate help-seeking. A key concern for all participants was that digital tools should add value over paper resources, should be simple to use, and that data presented were brief and easy to interpret. The intervention and results of early feasibility testing: A digital app was developed to help patients on strong opioids achieve personal treatment goals. The app includes a short film about pain and symptom management, and links to telephone/web-based help. The app allows easy recording of short-acting analgesic doses, linked algorithmically to help-screens. A weekly diary asks about pain, side effects, function, and medication adherence. The digital diary contains novel measures of pain, including a question about the level at which pain becomes bothersome to the individual patient. App reports are automatically shared with linked professionals so that feedback can be given. Recruiting patients with advanced symptomatic cancer was difficult. The app was feasibility tested with two patients, their linked GPs, and Macmillan nurses. Electronic patient reports were shared with linked healthcare professionals using secure NHS email. Professionals found patient reports thought-provoking. Reports were used to inform clinical encounters, and seemed to promote a shared understanding of patient symptom management goals. Conclusions: A digital intervention has been developed using a rigorous, theory-based methodological approach. There are early indications that the intervention could promote patient centred care and shared decision making in patients with cancer pain. Lessons have been learned about recruiting patients with symptomatic cancer, and the intervention is ready to be tested on a larger scale.
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Puel, Benoît. "Conception de traducteurs et techniques multi-éléments optimisés pour le contrôle non destructif ultrasonore". Paris 11, 2010. http://www.theses.fr/2010PA112106.

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Le contrôle non destructif par ultrasons vise à détecter et dimensionner des défauts à l'intérieur, ou à la surface de structures mécaniques à l'aide d'échographies. La mise en œuvre d'un tel contrôle peut se révéler complexe, en particulier lorsqu'on utilise la technologie multiéléments. Elle s'appuie sur des capteurs formés par un réseau d'éléments pilotés électroniquement indépendamment, lui conférant ainsi de nombreux avantages en termes d'adaptabilité et de polyvalence. Cependant, elle présente aussi le risque de générer des artéfacts, appelés lobes de réseau, nuisibles aux performances du contrôle. Pour s'affranchir de ces problèmes, en particulier lors de la phase de conception du contrôle, en termes de design et de pilotage du capteur, les experts s'appuient généralement sur les logiciels de simulation, tels que la plateforme CIVA développée au sein du CEA LIST. Le travail de thèse présenté propose d'automatiser ces études paramétriques, qui peuvent se révéler longues et délicates, à l'aide d'un outil d'optimisation. Celui-ci a été construit en connectant un algorithme évolutionniste avec les modules de simulation des contrôles non destructifs de CIVA. De plus, l'algorithme a été étendu pour prendre en compte des contraintes, définir une précision sur les variables, et résoudre des problèmes multi-objectifs. Une attention particulière a été portée sur la réduction du nombre de paramètres de réglage afin de rendre cet outil accessible à des utilisateurs ne maîtrisant pas les modèles d'optimisations. Afin de valider la procédure d'optimisation mise en œuvre, trois familles de paramètres influant les performances du contrôle par ultrasons ont été traitées. Ainsi, les paramètres de découpe de la pastille émettrice du capteur, puis ceux définissant sa position et son déplacement, et enfin ceux précisant les réglages électroniques ont été optimisés pour des configurations de contrôle. Les résultats ainsi obtenus mettent en évidence l'intérêt d'un tel outil, capable de fournir des résultats performants pour un temps de calcul raisonnable
Ultrasonic 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
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Libri sul tema "Contrôle optimisé"

1

Eddie, Habibi, a cura di. Alarm management: A comprehensive guide : practical and proven methods to optimize the performance of alarm management systems. 2a ed. Research Triangle Park, NC: International Society of Automation, 2011.

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Smith, W. C. Rib stability: Practical considerations to optimize rib design. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1992.

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Ford, Chelcy R. Xylem transport models optimize effectiveness of systemic insecticide applications for controlling hemlock woolly adelgid (Adelges tsugae). Asheville, NC: U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 2010.

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Seligman, Martin E. P. The optimistic child. Boston, Mass: Houghton Mifflin, 1995.

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Michaels, Jillian. Optimiza tu metabolismo: Los tres secretos dietøticos para equilibrar tus hormonas de manera natural y obtener un cuerpo atractivo y saludable. New York: Vintage Español, 2010.

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Peggy, Dace, a cura di. The memory solution: Dr. Julian Whitaker's 10-step program to optimize your memory and brain function. Garden City Park, NY: Avery Pub. Group, 1999.

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Hollifield, Bill R. The alarm management handbook a comprehensive guide the alarm management handbook: A comprehensive guide practical and proven methods to optimize the performance of any alarm management system. Research Triangle Park, NC: Instrumentation, Systems, and Automation Society, 2007.

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Bauer, Jeffrey C. Paradox and imperatives in health care: How efficiency, effectiveness, and e-transformation can conquer waste and optimize quality. New York: Productivity Press, 2008.

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Bauer, Jeffrey C. Paradox and imperatives in health care: How efficiency, effectiveness, and e-transformation can conquer waste and optimize quality. New York: Productivity Press, 2008.

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Mark, Hagland, a cura di. Paradox and imperatives in health care: How efficiency, effectiveness, and e-transformation can conquer waste and optimize quality. New York: Productivity Press, 2008.

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Capitoli di libri sul tema "Contrôle optimisé"

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Auerbach, Paul. "Equality and Democratic Control". In Socialist Optimism, 364–421. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1007/978-1-137-56396-5_13.

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Serrano, Gil, Bruno J. Guerreiro e Rita Cunha. "Nonlinear Control of Hybrid Drones via Optimised Control Allocation". In CONTROLO 2022, 214–26. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10047-5_19.

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Müller, Sebastian, e Thomas Raste. "Future Brake Systems and Motion Control". In Next Generation Electrified Vehicles Optimised for the Infrastructure, 3–15. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-47683-9_1.

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Schlich, Thomas. "Optimised Control: The AO’s Success in East Germany". In Surgery, Science and Industry, 169–79. London: Palgrave Macmillan UK, 2002. http://dx.doi.org/10.1057/9780230513280_9.

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Sierra-Gonzalez, Andres, Paolo Pescetto, Elena Trancho e Gianmario Pellegrino. "Modelling and Control Solution of an E-axle for Third-Generation Electric Vehicles". In Next Generation Electrified Vehicles Optimised for the Infrastructure, 39–47. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-47683-9_4.

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Sears, Barry, e Asish K. Saha. "Dietary Control of the Resolution Response to Optimize Inflammation". In Nutriomics, 135–55. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003142195-7.

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Lu, Joseph Z. "Multi-zone Control under Enterprise Optimi-zation: Needs, Challenges and Requirements". In Nonlinear Model Predictive Control, 393–402. Basel: Birkhäuser Basel, 2000. http://dx.doi.org/10.1007/978-3-0348-8407-5_22.

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Sachan, Shailu, e Pankaj Swarnkar. "Optimised Glucose Control in Human Body using Automated Insulin Pump System". In Intelligent Control, Robotics, and Industrial Automation, 725–32. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4634-1_57.

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Segovia, Edgar, Paul van Schaik e Vladimir Vukovic. "Indoor Thermal Comfort Controller Integrating Human Interaction in the Control-Loop as a Live Component". In Springer Proceedings in Energy, 107–15. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30960-1_11.

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AbstractThis research integrates the human component as a living part of the control loop, using preferences to optimise energy consumption. This paper presents an outline of a temperature controller, which is based on the theory of thermal comfort and uses fuzzy logic to optimise comfort and reduce energy consumption. The controller allows multiple-inputs, from more than one single user to set a temperature-setpoint. The control-logic was developed in MATLAB using the Simulink tool in the simulations, energy use is optimized, reducing energy consumption between 22 and 31%. The controller was tested in an office to improve the average thermal sensation of the participants between 14 and 17%. In future works increase the sample size and evaluate the non-energy impacts of the energy efficiency on thermal comfort.
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Binh, Pham Thanh, Dao Huy Du e Tang Cam Nhung. "Control and Optimize Black Tea Fermentation Using Computer Vision and Optimal Control Algorithm". In Advances in Engineering Research and Application, 310–19. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-37497-6_36.

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Atti di convegni sul tema "Contrôle optimisé"

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Memon, Wajih, Sophie Robinson, Mark White e Ieuan Owen. "Preliminary Progress in Establishing Motion Fidelity Requirements for Maritime Rotorcraft Flight Simulators". In Vertical Flight Society 74th Annual Forum & Technology Display, 1–15. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12827.

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The research presented in this paper is part of a project underway at the University of Liverpool (UoL) which aims to develop overall simulation fidelity requirements for maritime rotorcraft flight simulators. This requires a structured examination of individual Modelling and Simulation (M&S) elements, such as motion and visual cues, flight dynamics model and ship airwake integration. The paper reports the initial results of motion cueing research that has been conducted to assess and optimise the motion drive laws and determine high fidelity motion cueing for simulated shipboard operations. To do this, an objective technique, Vestibular Motion Perception Error (VMPE), has been developed. The technique was utilised to optimise the motion cues in UoL's Heliflight-R simulator for a simulated helicopter landing on an aircraft carrier in a turbulent environment. Four motion tuning sets were derived offline and experimentally tested. Results show the influence of different motion cues and airwake conditions on the pilot's overall self-motion perception, control strategy and task performance. It was found that high-fidelity motion cueing becomes more desirable for the pilot at higher airwake wind conditions, for which an 'Optimised' motion setting was obtained using the new technique, than at lower airwake turbulence conditions.
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Jawad, A. J. "An optimised tracking antenna controller". In UKACC International Conference on Control. Control '96. IEE, 1996. http://dx.doi.org/10.1049/cp:19960584.

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Taale, H. "Comparing methods to optimise vehicle actuated signal control". In Eleventh International Conference on Road Transport Information and Control. IEE, 2002. http://dx.doi.org/10.1049/cp:20020216.

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Lee, Jiwoong, e Jean Walrand. "Optimism in games with non-probabilistic uncertainty". In 2010 49th IEEE Conference on Decision and Control (CDC). IEEE, 2010. http://dx.doi.org/10.1109/cdc.2010.5718160.

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Elmore, Robert James, George Harold Medley e Robert C. Goodwin. "MPD Techniques Optimize HPHT Well Control". In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2014. http://dx.doi.org/10.2118/170887-ms.

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Dahl, Bjorn, Tor Henry Omland e Arild Saasen. "Optimised solids control in arctic environments". In SPE Russian Oil and Gas Exploration and Production Technical Conference and Exhibition. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/160574-ms.

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Murphy, Conor, e Andrew Keane. "Optimised voltage control for distributed generation". In 2015 IEEE Eindhoven PowerTech. IEEE, 2015. http://dx.doi.org/10.1109/ptc.2015.7232409.

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Scott M. Hansen e Wendell Porter. "Using Technology to Optimize Greenhouse Control". In 2006 Portland, Oregon, July 9-12, 2006. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2006. http://dx.doi.org/10.13031/2013.21118.

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Dennant, Andrew. "Using Closed Loop Adaptive Control to Optimise Plant Operations". In Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers, 2008. http://dx.doi.org/10.2118/117881-ms.

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Stotzel, M., H. Hoppe-Oehl, F. Schwermer e M. Zdrallek. "A Queue Theory Approach to Optimise Control Centre Organisation". In 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013). Institution of Engineering and Technology, 2013. http://dx.doi.org/10.1049/cp.2013.0753.

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Rapporti di organizzazioni sul tema "Contrôle optimisé"

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Dipasquale, Chiara, Roberto Fedrizzi, Valeria Palomba, Alex Thür e Dagmar Jähnig. Technical report on system sizing and optimised control strategies. IEA SHC Task 53, giugno 2019. http://dx.doi.org/10.18777/ieashc-task53-2019-0007.

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Seright, Randall, Jenn-Tai Liang, Richard Schrader, John Hagstrom II, Ying Wang, Anand Kumar e Kathryn Wavrik. Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. Office of Scientific and Technical Information (OSTI), settembre 2001. http://dx.doi.org/10.2172/786057.

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Seright, Randall S., Jenn-Tai Liang, Richard Schrader, John Hagstrom II, Ying Wang, Ananad Kumar e Kathryn Wavrik. Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. Office of Scientific and Technical Information (OSTI), ottobre 2001. http://dx.doi.org/10.2172/787945.

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Seright, Randall S., Jenn-Tai Liang, Richard Schrader, John Hagstrom II, Jin Liu e Kathryn Wavrik. Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. Office of Scientific and Technical Information (OSTI), settembre 1999. http://dx.doi.org/10.2172/11975.

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Seright, R. S. Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. Office of Scientific and Technical Information (OSTI), giugno 1999. http://dx.doi.org/10.2172/7430.

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Seright, Randal S. Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. Office of Scientific and Technical Information (OSTI), aprile 2000. http://dx.doi.org/10.2172/753863.

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Seright, Randall S. Using Chemicals to Optimize Conformance Control in Fractured Reservoirs. Office of Scientific and Technical Information (OSTI), settembre 2000. http://dx.doi.org/10.2172/762884.

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DeMoncada, Angelique C. Association of Optimism with Emotional and Cardiovascular Reactivity in Coronary Patients, and Healthy Controls. Fort Belvoir, VA: Defense Technical Information Center, marzo 2007. http://dx.doi.org/10.21236/ad1013973.

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Angrist, Noam, Amanda Beatty, Claire Cullen e Moitshepi Matsheng. A/B testing in education: rapid experimentation to optimise programme cost-effectiveness. What Works Hub for Global Education, ottobre 2024. http://dx.doi.org/10.35489/bsg-whatworkshubforglobaleducation-ri_2024/06.

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A/B testing offers a practical approach to improving education programmes in low-and middle-income countries. This insight note delves into how it allows implementers to quickly, affordably and effectively optimise interventions. Drawing on seven years of A/B testing experience from Youth Impact, the authors explore how this approach differs from traditional Randomised Control Trials (RCTs) by focusing on rapid, iterative programme adjustments that boost impact and scalability. By embracing A/B testing, the social sector can harness its potential to drive data-informed decisions, improve student learning and enhance programme efficiency at scale.
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Karnowski, Thomas, Matthew Eicholtz, Wael Elwasif, Regina Ferrell, Thomas Naughton III, T. Sean Oesch, Robert Patton, Derek Rose, Ryan Tokola e Steven Young. Reinforcement Learning-based Traffic Control to Optimize Energy Usage and Throughput (CRADA report). Office of Scientific and Technical Information (OSTI), luglio 2019. http://dx.doi.org/10.2172/1560460.

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