Academic literature on the topic 'Conversion de modes'

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Journal articles on the topic "Conversion de modes":

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Zhong, Yanan, Chuxuan Lin, Juncheng Fang, Ting Lei, and Xiaocong Yuan. "LP modes exchange based on multiplane light conversion." Chinese Optics Letters 22, no. 3 (2024): 030602. http://dx.doi.org/10.3788/col202422.030602.

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Nikitin, A. Yu, David Artigas, Lluis Torner, F. J. García-Vidal, and L. Martín-Moreno. "Polarization conversion spectroscopy of hybrid modes." Optics Letters 34, no. 24 (December 15, 2009): 3911. http://dx.doi.org/10.1364/ol.34.003911.

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Zheng, L. J., and M. Furukawa. "Current-interchange tearing modes: Conversion of interchange-type modes to tearing modes." Physics of Plasmas 17, no. 5 (May 2010): 052508. http://dx.doi.org/10.1063/1.3425857.

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Vu, Alex, Leonard J. Bond, and Sunil K. Chakrapani. "Numerical Study of Mode Conversion between Fundamental Lamb and Rayleigh Waves." Applied Sciences 13, no. 9 (May 1, 2023): 5613. http://dx.doi.org/10.3390/app13095613.

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This article reports the findings of a numerical study of mode conversion between fundamental Lamb and Rayleigh waves and vice versa in quarter and half spaces. Fundamental Lamb wave (A0 and S0) propagation in a plate attached to a quarter space and the subsequent mode conversion to a Rayleigh wave was studied using finite element analysis. B-Scans show that a beat-like phenomenon can be observed for the R → L conversion and a generation length can be observed for the L → R conversion. The quarter-space model was also used to study the Rayleigh to Lamb mode conversion. Two hypotheses were developed based on the observed mode conversion efficiencies: (a) the main driving factor of mode conversion between Lamb and Rayleigh waves is the grazing incidence of bulk modes and (b) due to scattering and diffraction, the modes will require a generation length to stabilize in amplitude. Both hypotheses were tested and confirmed using numerical models, including a half-space model to study the diffraction of bulk waves from an incident Lamb wave. The results are of significance for nondestructive evaluation of complex structures where such structural discontinuities exist and it becomes important to understand the fundamental mode conversion phenomenon.
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Huang, Wanxia, Chaogang Li, Maosheng Wang, Yong Zhou, Cunyuan Zhu, Kuanguo Li, Xinyan Yang, and Fabao Zhang. "Modes conversion due to plasmons induced transparency." Physics Letters A 383, no. 13 (April 2019): 1520–25. http://dx.doi.org/10.1016/j.physleta.2019.02.003.

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Freedman, A. "Conversion modes in a free elastic plate." Journal of Sound and Vibration 145, no. 3 (March 1991): 391–407. http://dx.doi.org/10.1016/0022-460x(91)90110-6.

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Xu, Jun Jun, Hao Chi Zhang, Qian Zhang, and Tie Jun Cui. "Efficient conversion of surface-plasmon-like modes to spatial radiated modes." Applied Physics Letters 106, no. 2 (January 12, 2015): 021102. http://dx.doi.org/10.1063/1.4905580.

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Wang, Shixiong, Yilin Zhang, and Jianjia Yi. "Design and Test of Embedded Reconfigurable Mode Converter Based on Spontaneous Deformable Materials." Materials 16, no. 19 (September 27, 2023): 6420. http://dx.doi.org/10.3390/ma16196420.

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The mode converter, as a passive mode conversion device in transmission lines, is well-investigated and widely implemented in various electromagnetic systems. However, most traditional mode converters can only realize a single conversion mode. Thus, a mode converter achieving multiple controllable output modes is urgently needed. In this paper, a reconfigurable mode converter operating in the microwave range is achieved by embedding a deformable all-dielectric material with quadrilateral shape into a rectangular waveguide based on coupled-mode theory. It can achieve different target modes with controllable output for the same input by exciting the deformable all-dielectric material. The design principle of the mode converter is expounded concretely and simulation is carried out using HFSS software 2022 R2. Experimental results, consisting of the simulation results, demonstrate that the proposed mode converter can achieve various mode conversions with mode purity higher than 95%. This article innovatively applies deformable materials to waveguide mode conversion, expanding the application of deformable memory materials in electromagnetic devices.
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Xu, Shibo, and Alexey Stovas. "Estimation of the conversion point position in elastic orthorhombic media." GEOPHYSICS 84, no. 1 (January 1, 2019): C15—C25. http://dx.doi.org/10.1190/geo2018-0375.1.

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Determination of the conversion point position is very important to carry out seismic processing in the common conversion point gather of converted wave data. The anisotropic effect is very obvious for a converted wave when estimating the physical and processing parameters from real data. To estimate the conversion point in an elastic orthorhombic (ORT) medium, we have defined an explicit rational form approximation for the radial coordinate of the conversion point for converted [Formula: see text], [Formula: see text], and [Formula: see text] waves. To obtain the approximation coefficients, the Taylor series approximation in the corresponding vertical slowness for three pure wave modes is applied. The coefficients in our proposed approximation are computed within two vertical symmetry planes. The difference between the acquisition azimuth and the azimuth of the conversion point position is analyzed for different combinations of the wave modes. The accuracy of the conversion point position estimation for three ORT models is illustrated in the numerical examples. One can see from the results that for converted [Formula: see text] and [Formula: see text] waves, our approximation is very accurate in estimating the conversion point position regardless of the tested ORT model. For a converted [Formula: see text] wave, due to the existence of cusps, triplications, and shear singularities, the error in conversion point estimation is relatively larger compared with PS-waves in the vicinity of the singularity point.
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Nikitov, S. A., and Ph Tailhades. "Optical modes conversion in magneto-photonic crystal waveguides." Optics Communications 199, no. 5-6 (December 2001): 389–97. http://dx.doi.org/10.1016/s0030-4018(01)01583-8.

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Dissertations / Theses on the topic "Conversion de modes":

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Girel, Etienne. "Modes de stabilisation innovants de catalyseurs pour la conversion de la biomasse." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1214.

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La transformation de la biomasse lignocellulosique requiert des conditions opératoires différentes de celles employées dans les procédés du raffinage et de la pétrochimie. Ainsi, certaines transformations de produits bio-sourcés sont opérées en phase aqueuse et en température (« conditions hydrothermales (HT) » : T > 200°C, eau liquide). Les catalyseurs hétérogènes industriels constitués de supports poreux oxydes comme l’alumine se révèlent alors inadaptés. Des modifications structurales et texturales sont observées induisant des performances catalytiques instables et incompatibles avec une viabilité industrielle d’éventuels procédés. La thèse propose de développer des matériaux catalytiques présentant des propriétés de stabilité hydrothermale adaptées au traitement des nouvelles matières premières que sont la biomasse et ses réactifs dérivés. La stratégie consiste à modifier la surface d’alumine afin de la rendre stable en conditions HT. Cette modification de surface est effectuée avec l’aide d’additifs organiques (carbone, polyols) ou inorganiques (silicium).Il est montré que l’alumine devient stable lors de la saturation de certains hydroxyles de sa surface localisés spécifiquement sur les faces basales des cristallites élémentaires. Des stratégies sont développées pour de déposer sélectivement du carbone ou du silicium sur ces sites en question. Une très bonne stabilité HT est ainsi obtenue avec un taux de recouvrement de la surface proche de 20% seulement. Une phase métallique est ensuite déposée sur les matériaux stabilisés et leurs performances catalytiques sont évaluées pour l’hydrogénolyse du glycérol
Biomass transformation reactions are carried under very different conditions from those used in petroleum industry. Some bio-products are transformed in aqueous phase underhigh temperatures (hydrothermal conditions). Heterogeneous catalysts are most likely made with a porous oxide like alumina witch is not suited for such conditions. Its textural and structural properties are modified during the treatment making the material incompatible with any process. The aim of the thesis is to develop new catalytic materials with hydrothermal stability properties adapted to the treatment of biomass products. The strategy is to modify alumina surface in order to make it insensitive to water during a hydrothermal treatment. The surface modification is done with inorganic (silicon) and organic (carbon, polyols) additives.We show here that alumina is stable only if some specific hydroxyls located in basal surfaces of crystallites are saturated. We develop strategy to selectively cover those sites with carbon or silica. A very good hydrothermal stability is obtained with a surface coverage close to 20% only. Then, a metal phase is deposited on the stabilized supports and catalytic performances of the materials are evaluated through the glycerol hydrogenolysis reaction
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Skinner, Jacob Charles. "Energy Down-Conversion Between Classical Electromagnetic Modes via a Quantum Mechanical RF-SQUID." Thesis, University of Sussex, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487564.

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This thesis examines the interaction between an RF SQUID ring coupled to two high Q resonant circuit measurement systems, operating at 24 MHz and 1 GHz at 4.2K. Energy is coupled to the system via a microwave source and is used to modulate the screening current of the ring and also to excite transitions between the underlying eigenenergy bands of the ring via non-adiabatic interaction. We study the current literature on such systems, used as qubits and as the building blocks for quantum computing and information processing elements. We discuss the relevance ofour system to those reviewed and suggest useful future direction for this work. We show that the point contact RF-SQUID coupled to multiple resonant circuits can be used as a model for studying the interaction between flux qubits and electromagnetic modes and provides insight in designing future practical qubit systems. In this work a new method of data acquisition is introduced, providing a much improved visualisation of the phase space. A 1 GHz measurement system is used to provide evidence of energy down-conversion from the input electromagnetic mode for a range of frequencies, via the SQUID ring. Previous work has focused on high ratio down conversion of up to 18,806: 1. Our data now shows a ratio of 1.67:1 and allows our fully quantum· mechanical theoretical model to be more usefully applied to give further insight about the system. As well as the 1 GHz measurement system, we also consider measurements from 24 MHz readout for a range of point contact weak links. We conclude the experimental results by showing down conversion taking place to both tank circuits simultaneously from the input mode, operating at 3.9 GHz. Finally we present simulations using the fully quantum model ofthe system, discuss the limitations and draw useful conclusions about the quantum nature of the down-conversion mechanism.
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Chihani, Omar. "Etude de la fiabilité de composants GaN en conversion d'énergie." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0148/document.

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L’industrie des transports aéronautique et terrestre voit une augmentation constante de l’électrification de ses fonctions. Les actionneurs mécaniques ou hydrauliques sont au fil des évolutions technologiques remplacés par des actionneurs électriques.Les composants qui dominent le marché actuellement ne semblent plus capables de suivre la tendance. En effet, les composants de puissance à base de silicium règnent toujours sur le marché actuel, grâce à leur faible coût. Ce matériau commence par contre à atteindre ses limites théoriques en termes de performances. Dans ce contexte, différentes structures en semi-conducteurs à large bande interdite sont en train d’émerger afin de succéder au silicium.Cette étude a pour objectif d’évaluer la fiabilité des transistors de puissance à base de Nitrure de Gallium. Ces composants semblent être très prometteurs pour des applications moyennes puissances. Cependant, les mécanismes de défaillance dont peuvent souffrir ces composants ne sont pas encore suffisamment étudiés. L’étude consiste en l’application de vieillissements alliant contraintes thermiques et électriques. Ces vieillissements sont effectués à différentes conditions de tension et de température. L’objectif de cette méthode est, dans un premier temps, d’isoler l’effet de chaque facteur de stress sur l’état des composants, et dans un second temps, d’identifier les mécanismes de défaillances activés en fonction des conditions de vieillissement.Ce travail a permis d’identifier l’existence de différents mécanismes de défaillance pouvant être activés selon les conditions de vieillissement. En effet, il est apparu que la gamme de température de vieillissement utilisée influe grandement sur la prédominance des mécanismes de défaillance activés. Les résultats obtenus remettent en question les normes de qualification actuellement appliquées aux composants en Nitrure de Gallium. Ces normes devraient revoir à la hausse les températures de vieillissement utilisées afin de couvrir des gammes plus proches des températures d’utilisation pour ce type de composants
The aeronautical and terrestrial transport industries know a steady increase in the electrification of their functions. In fact, the mechanical or hydraulic actuators are gradually replaced by electric ones.The components dominating the market today seem unable to follow the trend anymore. In fact, silicon-based power components still prevail in the current market, thanks to their low cost. However, this material begins to reach its theoretical limits in terms of performance. In this context, different wide bandgap semiconductor structures are emerging to take on from silicon.The aim of this study is to assess the reliability of power transistors based on Gallium Nitride. These components are very promising for medium power applications. However, the failure mechanisms of these components are not yet sufficiently studied. The study consists in the application of aging tests combining thermal and electrical stresses. These agings are carried out under different conditions of tension and temperature. The objective of this method is, firstly, to isolate the effect of each stressor on the state of the components, and secondly, to identify the failure mechanisms activated according to the aging conditions.This work made it possible to identify the existence of different failure mechanisms that can be activated according to the aging conditions. Indeed, it has emerged that the aging temperature range used influences the predominance of activated failure mechanisms. The results challenge the adequacy of current qualification standards for Gallium Nitride components. These standards should revise upwards the aging temperatures used to cover ranges closer to the operating temperatures of this kind of components
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Roudet, James. "Analyse et comparaison des divers modes de conversion statique CC-CC : modes de commutation et sûreté de fonctionnement, performances CEM." Grenoble INPG, 1990. http://www.theses.fr/1990INPG0139.

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Les travaux présentes dans ce mémoire ont trait a l'amélioration de la conversion statique continu continu vis-à-vis de deux critères différents; la surete de fonctionnement et la compatibilité electromagnetique dont l'importance va croissante de nos jours. Pour ce faire, nous menons une étude comparative concernant une structure de type onduleur de tension mettant en ouvre successivement quatre technologies de semi-conducteurs (igbt-bipolaire, gto, mosfet), et ce dans les trois modes de fonctionnement suivants: thyristor thyristor dual commutation forcée. Un nouveau mode de commande a permis d'atteindre une fiabilité fonctionnelle satisfaisante pour le mode thyristor alors qu'une analyse des cellules de commutation associée a la mesure des pertes par commutation et par conduction constituent un premier pas en direction de la quantification de la fiabilité technologique. Une chaîne de mesure de puissances électriques instantanées developpee pour ces besoins nous permet de dissocier les pertes par commutation des pertes par conduction. De plus un banc de mesures calorimétriques valide le bilan global des pertes. Ces études montrent l'existence d'une certaine adéquation entre le composant semi-conducteur et le mode de commutation. La deuxième partie de ce travail concerne les perturbations émises en mode conduit principalement en mode différentiel et en mode rayonne. Ces investigations s'appuient conjointement sur des simulations et des mesures
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Bonnelle, Denis. "Tour solaire, tour à vaporisation d'eau, et modes de conversion d'énergie renouvelable : présentation, critiques et suggestions." Lyon 1, 2004. http://www.theses.fr/2004LYO10129.

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Sont principalement étudiés : - une tour solaire (un large collecteur circulaire en verre + une cheminée d'1 km de haut dans laquelle l'air chaud monte et entraîne des turbines) ; - et une tour à flux descendant d'air sec refroidi par vaporisation de gouttelettes d'eau. Des publications concurrentes présentant de graves erreurs de principe affectent la crédibilité de ces deux projets, pourtant sérieux malgré leur gigantisme. D'autres modes de conversion d'énergie renouvelable sont, de même, peu étudiés en France, recherchent des processus "pauvres" (rendement, matériaux, fluides moteurs), avec une production centralisée pour bénéficier d'économies d'échelle. Dans tous les cas, l'optimisation économique ne fait pas assez varier ensemble de nombreux paramètres pour déterminer une configuration optimale. Quelques améliorations techniques de la tour solaire sont proposées, en particulier pour pouvoir agrandir le collecteur solaire et la tour, et améliorer le rendement global
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Wang, Feng. "Modes, Excitation and Applications of Plasmonic Nano-apertures and Nano-cavities." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1348588159.

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Farhat, Youssef. "Study of Reverberation in a Bilayer Media : Application to the Measurement of Viscosity." Electronic Thesis or Diss., Bourges, INSA Centre Val de Loire, 2023. http://www.theses.fr/2023ISAB0006.

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Le contrôle par ultrasons (UT) classique est une méthode utilisée pour évaluer les paramètres des matériaux à l'aide d'une onde mécanique. La plupart de ces méthodes fournissent des informations locales sur les propriétés du milieu le long des trajets directs entre l'émetteur et le récepteur. Or, certaines de ces méthodes dépendent de la coda ou des réflexions tardives, qui fournissent des informations globales sur le support. Dans ce travail, une méthode inspirée des techniques d'acoustique des salles est proposée pour déterminer les propriétés du milieu En effet, le signal réverbéré est très sensible aux paramètres mécaniques et aux conditions aux limites. Dans la théorie acoustique des salles, qui utilise ces signaux réverbérés pour déterminer le temps de réverbération, ce qui est très utile pour améliorer la qualité sonore des salles. Cependant, cette technique ne fonctionne que pour un seul mode de propagation, puisque l'onde se propage dans l'air à l'intérieur de la pièce acoustique. Contrairement aux fluides, au moins deux modes de propagation se produisent dans un milieu solide homogène et isotrope. Cependant, en considérant qu'un milieu solide est analogue à la cavité acoustique, les parois sont équivalentes à des conditions limites. Tout d'abord, un modèle est développé pour estimer l'intensité acoustique de chaque mode de propagation dans un milieu solide en tenant compte du couplage dû à la conversion de mode. Il permet d'estimer le temps de réverbération en milieu solide. Dans un deuxième temps, un dispositif expérimental est proposé. Cinq plaques piézoélectriques (PZT), réparties de manière aléatoire sur un bloc d'aluminium, l'une agissant comme émetteur et les autres comme récepteurs pour effectuer des mesures expérimentales du temps de réverbération. Ensuite, une comparaison entre les résultats simulés et expérimentaux est effectuée, et la résolution de problèmes inverses est réalisée pour retrouver les atténuations. Un bon accord entre les valeurs d'atténuation récupérées et celles de la littérature pour les deux ondes de masse a été observé dans l'aluminium. Enfin, en utilisant l'atténuation récupérée des ondes de masse, les travaux ont été étendus aux systèmes multicouches, tels que le milieu solide est entouré de différents fluides à ses frontières Il a été démontré que le temps de réverbération est directement lié aux paramètres mécaniques du fluide environnant, tels que la densité, la célérité et leur viscosité
Classical ultrasonic testing (UT) is a method used to evaluate the parameters of materials using mechanical wave. Most of these methods provide local information about the properties of the medium along the direct paths between emitter and receiver. Yet, some of these methods depend on the coda or late reflections, which provide global information about the medium. In this work, a method inspired by room acoustic techniques is proposed to determine medium properties. In fact, the reverberated signal is highly sensitive to mechanical parameters and boundary conditions. In acoustic room theory, which uses these reverberated signals, for determination of the reverberation time which is very useful to enhance the sound quality of rooms. However, this technique only works for one propagation mode, since the wave propagates through the air inside the acoustic room. In contrast to fluids, at least two propagation modes occur in a homogeneous and isotropic solid medium. However, by considering that a solid medium is analogous to the acoustic cavity, the walls are equivalent to boundary conditions. Firstly, a model is developed to estimate the acoustic intensity of each propagation mode in solid medium taking into account the coupling due to mode conversion. It allows the reverberation time to be estimated in solid medium. Secondly, an experimental setup is proposed. A five piezoelectric (PZT) patches, randomly distributed on an aluminum block, one acting as an emitter and the others as receivers to perform experimental reverberation time measurements. Then, a comparison between the simulated and experimental results is done, and inverse problem solving is performed to retrieve the attenuations. A good agreement between the retrieved and literature attenuation values of both bulk waves has been observed in aluminum. Finally, using the retrieved attenuation of bulk waves, the work has been extended to multilayer system, such as the solid medium is surrounded by different fluids at its boundaries. It has been demonstrated that the reverberation time is directly related to the mechanical parameters of the surrounded fluid, such as density, celerity, and their viscosity
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Wilson, Daniel W. "Optical waveguiding in photorefractive crystals : photoinduced polarization conversion and electron waveguiding in semiconductor nanostructures : modes, directional coupling, and discontinuities." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/14934.

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Obeid, Hussein. "Contribution à la commande et à l'observation adaptatives par modes glissants d'ordres supérieurs : Application aux systèmes de gestion de l'énergie." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCA023/document.

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Cette thèse porte sur le développement de nouvelles stratégies de commande et d’observation adaptatives par Modes Glissants (MG) et par Modes Glissants d’Ordres Supérieurs (MGOS). En effet, la mise en œuvre des commandes par MG et MGOS classiques nécessite la connaissance des limites supérieures des perturbations ou de leurs dérivées, souvent inconnues. Le premier apport de cette thèse est la synthèse d’une stratégie d’adaptation permettant d'assurer la convergence de la variable de glissement vers un voisinage prédéfini de zéro sans nécessiter d'informations sur les perturbations ou leurs dérivées et sans surestimation du gain. Cette stratégie est ensuite déclinée pour concevoir : deux commandes par MG d’ordre 1 et 2, une commande par mode glissant intégral, ainsi qu’une version du différenciateur de Levant. La deuxième contribution de la thèse est la mise au point de deux commandes adaptatives par MGOS discontinues. Ces deux algorithmes assurent un mode glissant d'ordre n en s’affranchissant de la connaissance de la limite supérieure de la perturbation et de sa dérivée. Enfin, afin de montrer l’efficacité des algorithmes proposés, ils sont appliqués avec succès à travers des simulations pour la commande d’un système de conversion de l’énergie éolienne et la commande d’un moteur à induction linéaire pour la cogénération
This thesis deals with the development of novel strategies to adapt higher order sliding mode controllers and observers. The implementation of classics first order and higher order sliding mode controllers requires the knowledge of the upper bound of the disturbance or its derivative, which are often not known. The first contribution of this thesis is the design of an adaptive strategy that can ensure the convergence of the sliding variable to a predefined neighborhood of zero without requiring any information of the disturbance or its derivative and without overestimating the adaptive gain. This adaptive strategy is then declined for the design of the first order, second order and integral sliding mode controllers, and for the Levant's differentiator. The second contribution of the thesis is the development of two adaptive strategies for discontinuous higher order sliding mode control. The proposed two algorithms can provide the achievement of n-order sliding mode despite disturbances with unknown upper bounds or with unknown upper bounds of their derivatives. Finally, in order to show the effectiveness of the proposed algorithms, they are successfully applied through simulations to control the wind energy conversion system and the linear induction motor system for cogeneration
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Cabral, Sânzio Fernandes. "Fluxo de operações ligadas à análise de contas no TCE/PB sob a ótica dos modos de conversão do conhecimento organizacional." Universidade Federal da Paraí­ba, 2008. http://tede.biblioteca.ufpb.br:8080/handle/tede/3788.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
In the current context of transformation, the so called knowledge organizations seek to integrate, at least, three important components: infrastructure, people and technology. In this study, it is supposed that the process of knowledge management should consider this trilogy integrated. This research aimed to describe the main flow of operations related to the Analysis of Municipal Accounts in TCE-PB, external controlization of the state of Paraiba, from the perspective of modes of conversion of organizational knowledge. This investigation characterized itself as a basic search, with a mixed qualitative and quantitative as well as descriptive and exploratory approach, also using as technical procedures the bibliographic review, and the single case study method, limited to five Divisions of Monitoring of Municipal Management. The search tools used were the questionnaire, the focus group, quantitative statistical analysis and qualitative analysis of content, respectively. Through this case, it was found the need of technology to be properly harnessed, because it is used merely as tool for serving data without significant support for people, despite a good infrastructure. In addition to conditioning factors of the process of knowledge management, such as centralization of decisions and organizational culture in the public sector, it has shown that the knowledge creation process faces a number of baniers such as the absence of the practice of outsourcing and socialization, due to a misunderstanding of the concepts of socialization and combination. It was conclued that the flow of operations in the review of municipal accounts are handcared lack of incentive to the best practices of dissemination of tacit knowledge between servers and preservation of organizational memory, such as formation of discussion groups, expertises maps and disclosure of creative methods of network analysis.
No atual contexto de transformação, as chamadas organizações do conhecimento buscam integrar, pelo menos três componentes essenciais: infraestrutura, pessoas e tecnologia. Neste estudo, entende-se que o processo de gestão do conhecimento deve considerar essa trilogia integrada. O objetivo da pesquisa foi descrever o fluxo das operações relacionadas à Análise de Prestação de Contas no TCE-PB, órgão de controle externo do Estado da Paraíba, sob a ótica dos modos de conversão do conhecimento organizacional. Tal investigação se caracterizou como uma pesquisa básica, com abordagem mista quantitativo-qualitativa, enfoque descritivo-exploratório, usando também como procedimentos técnicos a pesquisa bibliográfica e documental e o método de estudo de caso único, limitado ao âmbito de cinco Divisões de Acompanhamento da Gestão Municipal do TCE-PB, envolvidas na análise de contas. Como instrumento de pesquisa, para a técnica de coleta e tratamento de dados, utilizaram-se o questionário, o grupo focal e a análise de conteúdo qualitativa e de procedimentos estatísticos, respectivamente. Por intermédio desse caso, foi constatada a necessidade de a tecnologia ser adequadamente aproveitada, pois é utilizada meramente como instrumento de veiculação de dados, sem expressivo suporte para as pessoas, apesar de uma boa infra-estrutura. Além de fatores condicionantes do processo de Gestão do Conhecimento, como centralização das decisões e a cultura organizacional do setor público, evidenciou-se que o processo de criação do conhecimento enfrenta uma série de lacunas, a partir da ausência da prática da externalização e da socialização, bem como da concepção equivocada entre o conceito de socialização e de combinação. Concluiu-se que o fluxo de operações da análise de prestação de contas municipais fica prejudicado pela falta de incentivo às melhores práticas de disseminação do conhecimento tácito entre servidores e à preservação da memória organizacional, tais como: formação de grupos de discussão, mapas de expertises e uso de métodos criativos de análise em rede.

Books on the topic "Conversion de modes":

1

1967-, Robinson Rowena, and Clarke Sathianathan, eds. Religious conversion in India: Modes, motivations, and meanings. New Delhi: Oxford University Press, 2003.

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Camillocci, Daniela Solfaroli, and Maria Cristina Pitassi. Les modes de la conversion confessionnelle à l'époque moderne: Autobiographie, altérité et construction des identités religieuses. Firenze: L.S. Olschki, 2010.

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R, McLean Charles, Leong Swee, and National Institute of Standards and Technology (U.S.), eds. Activity model: Ship repair and conversion. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Maitland, Donna M. Migration and farmland conversion: A conceptual model. Toronto, Canada: Dept. of Geography, York University, 1988.

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Yaramasu, Venkata, and Bin Wu. Model Predictive Control of Wind Energy Conversion Systems. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119082989.

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Taylor, Dean. Documentation for propane fleet conversion cost-effectiveness model. Austin TX: University of Texas, Center for Transportation Research, 1991.

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Jones, Danielle Angelina. Coalescent models of gene conversion with and without selection. Cambridge, Mass: Harvard University, 2009.

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Turnbull, William. Language in action: Psychological models of conversation. New York, NY: Routledge, 2003.

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Turnbull, William. Language in action: Psychological models of conversation. Hove: Psychology Press, 2003.

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Kitchin, Charles. RMS to DC conversion application guide. 2nd ed. [Norwood, Mass.]: Analog Devices, 1986.

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Book chapters on the topic "Conversion de modes":

1

Aresta, Michele, Angela Dibenedetto, and Eugenio Quaranta. "CO2 Coordination to Metal Centres: Modes of Bonding and Reactivity." In Reaction Mechanisms in Carbon Dioxide Conversion, 35–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-46831-9_2.

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Abram, Christopher. "The Two ‘Modes of Religiosity’ in Conversion-Era Scandinavia." In Medieval Identities: Socio-Cultural Spaces, 21–48. Turnhout: Brepols Publishers, 2014. http://dx.doi.org/10.1484/m.miscs-eb.1.102031.

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Barelko, V. V., I. M. Barkalov, V. I. Goldanskii, D. P. Kiryukhin, and A. M. Zanin. "Autowave Modes of Conversion in Low-Temperature Chemical Reactions in Solids." In Advances in Chemical Physics, 339–84. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470141236.ch3.

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Abu-Siada, Ahmed, Mohammad A. S. Masoum, Yasser Alharbi, Farhad Shahnia, and A. M. Shiddiq Yunus. "Applications of Unified Power Flow Controller in Wind Energy Conversion System." In Recent Advances in Renewable Energy, 17–48. UAE: Bentham Science Publishers Ltd., 2017. http://dx.doi.org/10.2174/9781681085425117020003.

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Unified power flow controller (UPFC) is one of the Flexible ac Transmission System (FACTS) devices that possess the ability of modulating both active and reactive power at the point of common coupling in four quadrant operational modes. This chapter illustrates UPFC topology, controllers with some case studies for various applications of UPFC in the DFIG-based WECS. New applications for UPFC are proposed to improve the overall performance of a DFIG-based WECS during voltage sag and voltage swell events at the grid side.
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Sirimanna, M. P. G., Jonathan D. Nixon, and M. S. Innocente. "Performance of Different Optimization Solvers for Designing Solar Linear Fresnel Reflector Power Generation Systems." In Springer Proceedings in Energy, 323–32. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30960-1_30.

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AbstractLinear Fresnel Reflector (LFR) is an emerging solar thermal power generation technology that benefits from a simple and low-cost construction in comparison to more conventional Concentrating Solar thermal Power (CSP) generation technologies such as parabolic trough and power tower. Although LFR technology presents the drawbacks of lower energy conversion efficiency and higher energy cost, these can be offset by optimizing its design. This has not been sufficiently addressed due to the complex interactions between solar rays, heat transfer modes, and design variables. This work presents a systematic approach to select suitable optimization methods for the design of LFR systems. Thus, a mathematical model is developed to carry out simultaneous raytracing and thermal simulations aiming to provide an estimation of the system’s total conversion efficiency to be maximized. In order to compare the performance at solving this problem of a range of optimization algorithms with different characteristics, three derivative-based, two derivative-free, one population-based, and the simulated annealing methods are used in the numerical experiments. Only one design variable and a simple LFR system with a trapezoidal receiver are considered in the first instance. Only those algorithms which are successful at solving this simple problem are then tested on the optimal design with multiple variables. An exhaustive search is also conducted to check accuracy. Results show that pattern search, simulated annealing, and genetic algorithms perform best at solving the simulation-based LFR optimal design problem.
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Weik, Martin H. "mode conversion." In Computer Science and Communications Dictionary, 1030. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_11651.

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Southwood, P. M. "Models of Conversion." In Defense Conversion Strategies, 99–108. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-017-1213-2_6.

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Ke, Xizheng. "Mode-conversion Methods." In Optical Wireless Communication Theory and Technology, 171–94. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1525-5_6.

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Ren, Xudong. "Conversion Model of Graphite." In Laser Shocking Nano-Crystallization and High-Temperature Modification Technology, 123–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-46444-1_5.

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Kooijman, S. A. L. M. "Biomass Conversion at Population Level." In Individual-Based Models and Approaches in Ecology, 338–58. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4757-0869-1_16.

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Conference papers on the topic "Conversion de modes":

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Bian, Yiming, Yan Li, Wei Li, Xiaobin Hong, Jifang Qiu, Erhu Chen, and Jian Wu. "Modes Multiplexing Conversion Based on Multi-plane Light Conversion." In Asia Communications and Photonics Conference. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/acpc.2020.m4a.252.

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Gamage, Chathura Vidana, Darshana Prasad Wadduwage, Lasantha Meegahapola, Inam Nutkani, and J. P. Karunadasa. "Analysis of Oscillatory Modes and Model Interactions of Microgrid." In 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia). IEEE, 2021. http://dx.doi.org/10.1109/ecce-asia49820.2021.9479152.

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Feng, L., Y. Li, S. Wu, X. Zeng, W. Li, R. Chen, J. Qiu, X. Hong, Ian P. Giles, and J. Wu. "Implementation of linearly-polarized LP01 modes to any azimuthally-orientated LP11 modes conversion." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/cleo_at.2018.jth2a.118.

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Yaroshenko, V. V. "Linear Conversion of Dust-Lattice Modes in Complex Plasmas." In NEW VISTAS IN DUSTY PLASMAS: Fourth International Conference on the Physics of Dusty Plasmas. AIP, 2005. http://dx.doi.org/10.1063/1.2134609.

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Clark, Lawrence T., Tai-Hua Chen, and Vikas Chaudhary. "Efficient voltage conversion for SRAM low standby power modes." In 2011 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2011. http://dx.doi.org/10.1109/iscas.2011.5937504.

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Stefanini, Luca, Davide Ramaccia, Vincenzo Galdi, Mirko Barbuto, Zahra Hamzavi-Zarghani, Michela Longhi, Alessio Monti, Stefano Vellucci, Alessandro Toscano, and Filiberto Bilotti. "Time-switched metasurfaces: Conversion from guided to radiated modes." In 2023 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2023. http://dx.doi.org/10.1109/iceaa57318.2023.10297939.

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Silva, Sergio Santos, Adroaldo Santos Soares, Fabio Sousa Santos, and Renelson R. Sampaio. "COMPARATION BETWEEN WESTERN AND EASTERN ENTERPRISE KNOWLEDGE CONVERSION MODES." In VIII Simpósio Internacional de Inovação e Tecnologia. São Paulo: Editora Blucher, 2022. http://dx.doi.org/10.5151/siintec2022-241251.

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Demma, A. "Mode conversion of longitudinal and torsional guided modes due to pipe bends." In The 27th annual review of progress in quantitative nondestructive evaluation. AIP, 2001. http://dx.doi.org/10.1063/1.1373756.

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Gao, Anming, Yansong Yang, and Songbin Gong. "Eradication of asymmetric spurious modes in AlN MEMS resonators using mode conversion." In 2016 IEEE 29th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2016. http://dx.doi.org/10.1109/memsys.2016.7421572.

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Jing, Tingting, Guoqiang He, Bin B. Lin, Wenqiang Li, Fei Qin, and Yang Liu. "Thermal analysis of RBCC engine at ejector, ramjet and scramjet modes." In 14th International Energy Conversion Engineering Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-4913.

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Reports on the topic "Conversion de modes":

1

Pirohov, Vladyslav M., Anna M. Horlo, and Iryna S. Mintii. Software development of the algorithm of adaptating of the website design for people with color-blindness. [б. в.], December 2018. http://dx.doi.org/10.31812/123456789/2888.

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The purpose of the study is the program implementation of the basic algorithms of the website design adaptation for people with color perception. This article examines the implementation of the following algorithms: the conversion algorithm from the rgb color model to the lms model (there is a special algorithm precisely in the color model lms for modeling various types of color perception violations), simulation of different color blindness types in the lms-model (this is the transformation of normal values in the color model lms to values with different types of color perception violations), convert data from lms color model to rgb model, conversion from color rgb to hsl model, color filtering in hsl-model and conversion from hsl model to rgb color model.
2

Cai, Yongxia, Christopher M. Wade, Justin S. Baker, Jason P. H. Jones, Gregory S. Latta, Sara B. Ohrel, Shaun A. Ragnauth, and Jared R. Creason. Implications of alternative land conversion cost specifications on projected afforestation potential in the United States. RTI Press, November 2018. http://dx.doi.org/10.3768/rtipress.2018.op.0057.1811.

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The Forestry and Agriculture Sector Optimization Model with Greenhouse Gases (FASOMGHG) has historically relied on regional average costs of land conversion to simulate land use change across cropland, pasture, rangeland, and forestry. This assumption limits the accuracy of the land conversion estimates by not recognizing spatial heterogeneity in land quality and conversion costs. Using data from Nielsen et al. (2014), we obtained the afforestation cost per county, then estimated nonparametric regional marginal cost functions for land converting land to forestry. These afforestation costs were then incorporated into FASOMGHG. Three different assumptions for land moving into the forest sector were run; constant average conversion cost, static rising marginal costs and dynamic rising marginal cost, in order to assess the implications of alternative land conversion cost assumptions on key outcomes, such as projected forest area and cropland use, carbon sequestration, and forest product output.
3

Lamb, Milton A. Development of Model List Conversion Application. Fort Belvoir, VA: Defense Technical Information Center, September 2011. http://dx.doi.org/10.21236/ada552063.

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Mendez Cruz, Carmen Margarita, Gary E. Rochau, and Mollye C. Wilson. Systems Engineering Model for ART Energy Conversion. Office of Scientific and Technical Information (OSTI), February 2017. http://dx.doi.org/10.2172/1343252.

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Vernon, Ronald J. High-Power Microwave Transmission and Mode Conversion Program. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1210042.

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Anderson, Paul B., and Michael A. Young. Connection Machine Software Conversion of a Navy Oceans Model. Fort Belvoir, VA: Defense Technical Information Center, September 1993. http://dx.doi.org/10.21236/ada269876.

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Phillips, C. K., P. L. Colestock, D. Q. Hwang, and D. G. Swanson. Parabolic approximation method for the mode conversion-tunneling equation. Office of Scientific and Technical Information (OSTI), July 1987. http://dx.doi.org/10.2172/6008817.

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Olsen and Willson. L51916 Pressure Based Parametric Emission Monitoring Systems (PEMS). Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), April 2002. http://dx.doi.org/10.55274/r0010181.

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The natural gas industry operates over 8000 stationary large bore (bore greater than 14 in) natural gas engines for natural gas compression on pipelines and power generation. As emissions regulations become increasingly more stringent, the need for low cost methods for compliance demonstration arises. A PEMS model is one such approach. Research in this area has increased significantly during the last decade. PEMS models for this application utilize parameters commonly measured on industrial engines in the field to predict engine-out emissions. Monitoring emissions in this manner represents a significant cost savings over the periodic use of chemiluminescence NOX analyzers, which are not standard equipment in natural gas compressor stations. PEMS model accuracy is dependent on the quality of the input data, both the training NOX measurements and the selection of input parameters. Hence, it is important to have both reliable data measurement methods and an understanding of engine operating parameters relation to NOX. This work is part of the body of work referred to as the Integrated Test Plan (ITP), performed at the Engines and Energy Conversion Laboratory (EECL). This report details an investigation into Parametric Emissions Monitoring System (PEMS) models. It is the final document to be delivered under the ITP program. Much of the work performed under the ITP program focused on Hazardous Air Pollutants (HAPs) research. However, the emphasis of the PEMS work is on the prediction of oxides of nitrogen (NOX) emissions from large bore natural gas engines. In this work two different PEMS models are developed, a semi-empirical model and a neural network model. The semi-empirical model is based on general relationships between NOX emissions and engine parameters, but contains empirical constants that are determined based on the best fit to engine experimental data. The neural network model utilizes a similar set of input parameters, but relies on the neural network code to determine the relationships between input parameters and measured NOX emissions. The neural network model also contains empirical constants. The mathematics involved in both models is described. A single term semi-empirical model, which has been utilized in the literature as a PEMS model, is applied for comparative purposes.
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Verburg, Peter H., Žiga Malek, Sean P. Goodwin, and Cecilia Zagaria. The Integrated Economic-Environmental Modeling (IEEM) Platform: IEEM Platform Technical Guides: User Guide for the IEEM-enhanced Land Use Land Cover Change Model Dyna-CLUE. Inter-American Development Bank, September 2021. http://dx.doi.org/10.18235/0003625.

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The Conversion of Land Use and its Effects modeling framework (CLUE) was developed to simulate land use change using empirically quantified relations between land use and its driving factors in combination with dynamic modeling of competition between land use types. Being one of the most widely used spatial land use models, CLUE has been applied all over the world on different scales. In this document, we demonstrate how the model can be used to develop a multi-regional application. This means, that instead of developing numerous individual models, the user only prepares one CLUE model application, which then allocates land use change across different regions. This facilitates integration with the Integrated Economic-Environmental Modeling (IEEM) Platform for subnational assessments and increases the efficiency of the IEEM and Ecosystem Services Modeling (IEEMESM) workflow. Multi-regional modelling is particularly useful in larger and diverse countries, where we can expect different spatial distributions in land use changes in different regions: regions of different levels of achieved socio-economic development, regions with different topographies (flat vs. mountainous), or different climatic regions (dry vs humid) within a same country. Accounting for such regional differences also facilitates developing ecosystem services models that consider region specific biophysical characteristics. This manual, and the data that is provided with it, demonstrates multi-regional land use change modeling using the country of Colombia as an example. The user will learn how to prepare the data for the model application, and how the multi-regional run differs from a single-region simulation.
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B. Jones, P.C. Efthimion, G. Taylor, T. Munsat, J.R. Wilson, J.C. Hosea, R. Kaita, et al. Enhanced Mode Conversion of Thermally Emitted Electron Bernstein Waves (EBW)to Extraordinary Mode. Office of Scientific and Technical Information (OSTI), January 2002. http://dx.doi.org/10.2172/795719.

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