Relevant bibliographies by topics / Modes guidés

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Modes guidés'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 December 2024

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Journal articles on the topic "Modes guidés"

1

Amo, Alberto, and Gaëtan Lévèque. "Comprendre la topologie photonique." Photoniques, no. 124 (2024): 54–58. http://dx.doi.org/10.1051/photon/202412454.

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La topologie décrit les propriétés d’un objet qui ne changent pas quand il est déformé. En photonique elle permet de classer les bandes de fréquence d’un matériau structuré selon leurs symétries locales. À l’interface entre deux matériaux optiques de topologie distincte apparaissent des modes guidés de propagation très robuste. Nous donnons ici les notions fondamentales pour en comprendre les propriétés.
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Chorfi, Lahcène. "Étude mathématique des modes guidés dans un milieu élastique à symétrie de révolution." ESAIM: Mathematical Modelling and Numerical Analysis 30, no. 3 (1996): 299–342. http://dx.doi.org/10.1051/m2an/1996300302991.

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Vanderhaegen, Frédéric. "Pédagogie active et inclusive pour l’analyse de dangers de systèmes d’aide à la conduite basée sur la recherche de dissonances." J3eA 21 (2022): 2053. http://dx.doi.org/10.1051/j3ea/20222053.

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Cet article propose une adaptation des modules « analyse des risques ferroviaires et ingénierie mécanique » et « diagnostic de systèmes homme-machine appliqué aux systèmes ferroviaires ou guidés » de formation à distance du parcours INERSYG (Ingénierie Ferroviaire et Systèmes Guidés) du Master Transports Mobilités Réseaux de l’Université Polytechnique Hauts-de-France. A partir d’études de cas impliquant des aides à la conduite, il s’agit de déterminer les modes de fonctionnement et d’usage en s’appuyant sur différents formalismes tels que celui des arbres de défaillance, celui des réseaux de Petri, celui de bases de règles ou celui des graphes causaux. Les cas sont issus de témoignages d’expert, d’utilisateur ou via les réseaux sociaux par exemple. Ils font l’objet d’une analyse de danger approfondie suivant une démarche de pédagogie active et inclusive avec des groupes d’étudiants en dernière année de Master. Il s’agit d’identifier des dissonances, i.e. des conflits d’autonomie en termes de connaissances, de disponibilité ou de possibilités d’action pour un même décideur ou entre décideurs. Les résultats sont encourageants et permettent à chacun de découvrir des scénarios potentiellement dangereux relatifs à l’usage de systèmes d’aide à la conduite.
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Dhia, Anne-Sophie Bonnet-Ben, and Fabrice Mahé. "A guided mode in the range of the radiation modes for a rib waveguide." Journal of Optics 28, no. 1 (February 1997): 41–43. http://dx.doi.org/10.1088/0150-536x/28/1/008.

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Heddebaut, Odile. "Les difficultés de mise en œuvre des sites propres pour les modes de transport collectif guidés ou non. Le cas des lignes de bus à haut niveau de service." Recherche - Transports - Sécurité 24, no. 94 (March 30, 2007): 27–45. http://dx.doi.org/10.3166/rts.94.27-45.

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Chenchen Zhao, Chenchen Zhao, Ji Chen Ji Chen, Hanmeng Li Hanmeng Li, Tao Li Tao Li, and Shining Zhu Shining Zhu. "Mode division multiplexed holography by out-of-plane scattering of plasmon/guided modes." Chinese Optics Letters 16, no. 7 (2018): 070901. http://dx.doi.org/10.3788/col201816.070901.

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Makmul, J. "A Pedestrian Evacuation Model with Leaders during the Smoke Dispersion Based on a Social Force Model." Modelling and Simulation in Engineering 2023 (April 20, 2023): 1–21. http://dx.doi.org/10.1155/2023/1029883.

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The pedestrian evacuation process during the propagation of smoke in case with and without guider is investigated. The effects of leaders on the evacuation are considered. The model is based on the social force model for pedestrians’ motions. The advection–diffusion equation is applied for the dispersion of smoke. The movement direction of a guider is guided by the solution of the Eikonal equation. It relies on the desired speed and the smoke density. A pedestrian who is not a guider follows the rule termed ‘flow with the stream’ and ‘following the wall’. We perform different numerical experiments in a room with one and two exits. The results show that the guiders effect on the evacuation time when they are large number of individuals in simulation. It can help to increase the number of evacuees. With small number of individuals in the experiment, the effect of guiders on evacuation time is not obvious. Further, simulation results are found that the domain with two exits provides higher number of outside pedestrians than the domain with a single door. Longer evacuation time period can increase the number of evacuees. The visibility range of a pedestrian is reduced when an additional smoke source is added to the system. It decreases the number of evacuees. The results of the proposed model are discussed and compared with the existing models.
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Bonnet, A. "Guided modes of integrated optical guides. A mathematical study." IMA Journal of Applied Mathematics 60, no. 3 (June 1, 1998): 225–61. http://dx.doi.org/10.1093/imamat/60.3.225.

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Susanti, Diana, Rina Widiana, Ramadhan Sumarmin, and Silvi Susanti. "Student Motivation Against Using Guided Inquiry-Based Animal Physiology Practicum Guide." BIOEDUSCIENCE 5, no. 1 (April 30, 2021): 69–73. http://dx.doi.org/10.22236/j.bes/514994.

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Guidance on guided animal inquiry based practicology has been developed with valid, practical and effective results. The guide developed is guided inquiry-oriented which can help students find their own knowledge when practicum activities are carried out. Guides developed are also in accordance with the correct guiding component. The purpose of this study is to see the results of student motivation in using guided inquiry-based physiology practicum guides. This research is a development study using the 4D model, the data is processed using a percentage formula. The results of data processing show that the motivation of students who use practicum guides get a percentage of 80.2% (highly motivated) and those who do not use practicum guides is 84.14% (highly motivated) It can be concluded that students are highly motivated towards the use of practicum guided animal physiology guides
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Paula Muniz, Evânia de, and Carlos Eduardo Félix da Costa. "A journey of research and action: Tatiana Chagas Memória Municipal School, Jardim Maravilha, Guaratiba, Rio de Janeiro." MOJ Ecology & Environmental Sciences 9, no. 4 (July 29, 2024): 155–60. http://dx.doi.org/10.15406/mojes.2024.09.00320.

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This work shared the experiences of a research teacher at the Tatiana Chagas Memória Municipal School, located in Jardim Maravilha, Guaratiba/RJ. It took place from June 19 to December 20, 2023. The action research proposed an education based on the pillars of Human Rights, Rights of Nature and Inclusion, advocating a flexible approach that incorporated various languages and tools. The methodology adopted had as its central axis Art-Based Research (PEA), which incorporates several approaches. This research was guided by the theory proposed by economist Alberto Acosta in his book "Bem Viver" (2016), "Carta da Terra" (1992), and by Edward Wilson's concept of Biophilia (1984). To make the research viable, tools such as Design Thinking and the Affective Tree were used. With the aim of meeting the Sustainable Development Goals (SDGs).
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Dissertations / Theses on the topic "Modes guidés"

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Leclerc, Augustin. "Calculs de mοdes électrοmagnétiques guidés dans des guides d'οndes tοrsadés et οuverts." Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMIR28.

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Cette thèse explore la modélisation et le calcul des modes électromagnétiques (EM) dans des guides d'ondes de géométries complexes, notamment dans des câbles électriques torsadés en milieux ouverts. L'objectif est de développer des méthodes numériques pour résoudre les équations de Maxwell afin de mieux comprendre la propagation des champs électromagnétiques dans des configurations réalistes. Cette étude est motivée par les enjeux liés à la réduction du rayonnement électromagnétique et à l'amélioration des performances des câbles en termes de confinement des champs. Nous traitons deux principales configurations : les guides d’ondes droits et les guides d'ondes torsadés. Pour les guides droits, des méthodes semi-analytiques sont mises en œuvre, notamment pour les câbles coaxiaux, permettant de tester les modèles numériques. Nous étendons ces méthodes aux guides d'ondes ouverts, où des conditions aux limites absorbantes (CLA) sont introduites pour modéliser un environnement infini en limitant les réflexions parasites. Dans les câbles torsadés, une géométrie hélicoïdale est exploitée afin de reformuler les équations de propagation des ondes EM dans un cadre numérique adapté, permettant d'obtenir des simulations en basse fréquence. Un travail sur la construction de CLA dans ce cadre a également été initié. Les résultats obtenus fournissent une meilleure compréhension des phénomènes électromagnétiques à basse fréquence et ouvrent des perspectives pour la conception de dispositifs plus performants et l'étude des systèmes électromagnétiques dans des environnements hétérogènes réels
This thesis explores the modelling and calculation of electromagnetic (EM) modes in waveguides with complex geometries, particularly in twisted electric cables in open environments. The aim is to develop numerical methods for solving Maxwell's equations in order to better understand the propagation of electromagnetic fields in realistic configurations. This study is motivated by the challenges of reducing electromagnetic radiation and improving cable performance in terms of field containment. We deal with two main configurations: straight waveguides and twisted waveguides. For straight waveguides, semi-analytical methods are used, particularly for coaxial cables, to test numerical models by comparison with precise solutions. We extend these methods to open waveguides, where absorbing boundary conditions (ABC) are introduced to model an infinite environment while limiting spurious reflections. In twisted cables, a helical geometry is exploited to reformulate the EM wave propagation equations in a suitable numerical framework, enabling low-frequency simulations to be obtained. Work on the construction of ABCs within this framework has also been initiated. The results that we obtain provide a better understanding of low-frequency electromagnetic phenomena and open up prospects for the design of more efficient devices and the study of electromagnetic systems in real heterogeneous environments
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Perségol, Dominique. "Réalisation d'un modulateur électro-optique utilisant l'excitation résonnante des modes guidés." Grenoble INPG, 1988. http://www.theses.fr/1988INPG0022.

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On presente l'etude d'un nouveau type de modulateur electrooptique permettant la modulation directe de l'intensite d'une onde optique. La modulation est obtenue par variation des conditions de couplage lors de l'excitation d'un mode guide dans une structure planaire dans le cas d'un couplage par prisme. On propose un modele theorique ainsi que des techniques de caracterisation experimentales permettant de calculer les parametres optiques et electriques de la structure. Cette technique permet de calculer aussi les valeurs des coefficients electrooptiques de materiaux deposes en couches minces
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Cès, Maximin. "Etude théorique et expérimentale des résonances mécaniques locales de modes guidés par des structures complexes." Phd thesis, Université Paris-Diderot - Paris VII, 2012. http://tel.archives-ouvertes.fr/tel-00986632.

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Cette thèse traite des modes de Lamb à vitesse de groupe nulle. Ces modes singuliers, pour lesquels la vitesse de groupe est nulle et la vitesse de phase finie, donnent lieu à des résonances locales étroites aux propriétés très intéressantes. Leur fréquence dépend de l'épaisseur et des propriétés mécaniques de la plaque, ouvrant ainsi des perspectives intéressantes en contrôle non destructif (CND). Les propriétés de ces modes ont d'abord été rappelées. L'étude expérimentale a été menée en utilisant un dispositif optique sans contact comprenant un laser source impulsionnel et une sonde interférométrique, pour la génération et la détection de ces modes. Les résonances ont été utilisées pour déterminer l'épaisseur et les constantes élastiques de plaques et d'un tube anisotrope. Ensuite, la résolution latérale de la mesure d'épaisseur a été étudiée. L'influence du bord de la plaque a été explorée : une transition abrupte entre la première résonance ZGV et la résonance de bord a été observée à la distance d'une épaisseur du bord. L'effet sur les résonances ZGV du dépôt d'une couche mince a alors été étudié numériquement, permettant ainsi la mesure de l'épaisseur de couches d'or de quelques centaines de nanomètres déposées sur un substrat millimétrique. Pour finir, le rôle des pertes a été examiné dans deux cas distincts, l'atténuation intrinsèque et le rayonnement dans un fluide en contact sur une face.
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Ces, Maximin. "Etudes théorique et expérimentale des résonances mécaniques locales de modes guidés par des structures complexes." Paris 7, 2013. http://www.theses.fr/2013PA077271.

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Cette thèse traite des modes de Lamb à vitesse de groupe nulle. Ces modes singuliers, pour lesquels la vitesse de groupe (cid dk) est nulle et la vitesse de phase (coi k) finie, donnent lieu à des résonances locales étroites aux propriétés très intéressantes. Leur fréquence dépend de l'épaisseur et des propriétés mécaniques de la plaque, ouvrant ainsi des perspectives intéressantes en contrôle non destructif (CND). Les propriétés de ces modes ont d'abord été rappelées. L'étude expérimentale a été menée en utilisant un dispositif optique sans contact comprenant un laser source impulsionnel et une sonde interférométrique, pour la génération et la détection de ces modes. Les résonances ont été utilisées pour déterminer l'épaisseur et les constantes élastiques de plaques et d'un tube anisotrope. Ensuite, la résolution latérale de la mesure d'épaisseur a été étudiée. L'influence du bord de la plaque a été explorée : une transition abrupte entre la première résonance ZGV et la résonance de bord a été observée à la distance d'une épaisseur du bord. L'effet sur les résonances ZGV du dépôt d'une couche mince a alors été étudié numériquement, permettant ainsi la mesure de l'épaisseur de couches d'or de quelques centaines de nanomètres déposées sur un substrat millimétrique. Pour finir, le rôle des pertes a été examiné dans deux cas distincts, l'atténuation intrinsèque et le rayonnement dans un fluide en contact sur une face
This PhD thesis is about Zero Group Velocity Lamb modes. For these peculiar modes, the group velocity (c 1 cohlk) vanishes and the phase velocity (coi k) remains finite, giving rise to narrow local resonances whose properties are very interesting. Attractive prospects in non destructive evaluation can be found because the frequency of those modes depends on the thickness and the mechanical properties of the plate. The behavior of the modes has primarily been explained. The experimental study have been lead using a non-contact optical set up including a pulsed laser source and an interferometric probe for the generation and the detection of those modes. The resonances have been used to determine the thickness and elastic constants of plates and of an anisotropic pipe. Then, the lateral resolution of the thickness measurement has been studied. The influence of the plate edge has been explored: an abrupt transition between the first ZGV resonance and the edge resonance has been observed at the distance of one thickness to the edge. The effect of the deposit of a thin layer on the ZGV resonances has then been numerically studied, which permitted to measure the thickness of a few hundreds nanometers thin gold layers deposited on a millimetric substrate. Finally, the function of the losses has been examined for two different cases, the intrinsic attenuation and the radiation of a fluid in contact with one face
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Chorfi, Lahcène. "Etude mathématique et numérique des modes guidés dans un milieu élastique à symétrie de révolution." Aix-Marseille 1, 1992. http://www.theses.fr/1992AIX11034.

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Cette these est consacree a l'etude de la propagation d'ondes guidees dans un milieu heterogene a symetrie de revolution. Ce probleme est ramene a l'etude spectrale d'une suite d'operateurs, auto-adjoints. Dans la premiere partie on caracterise le spectre de ces operateurs. A l'aide du principe de min-max, on analyse les proprietes des courbes de dispersion (regularite, dependance continue en fonction des parametres du modele). Nous donnons des estimations sur les seuils et nous les caracterisons par une equation variationnelle. Dans la deuxieme partie, nous proposons une methode numerique, basee sur les elements finis localises, permettant de calculer les modes guides et leurs seuils. Des resultats de convergence y sont etablis, puis valides par comparaison avec un probleme modele
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Arlot, Pierrick. "Etude de la faisabilité d'un dispositif bistable optique utilisant l'excitation résonnante de modes guidés non linéaires." Grenoble INPG, 1987. http://www.theses.fr/1987INPG0078.

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Grace a un coupleur a prisme, l'excitation resonnante d'ondes electromagnetiques qui peuvent se propager dans un guide d'onde non lineaire conduit a un phenomene de bistabilite optique. Les conditions de l'existence d'un tel cycle sont ennoncees. Mise au point d'un dispositif experimental pour comparer la theorie a la pratique, base sur un guide d'ondes planaire realise par la technique de l'echange ionique. On utilise le cristal liquide mbba en phase nematique comme materiau non lineaire
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Poujet, Yannick. "Transmission exaltée à travers des tamis à photons à ouvertures annulaires nanométriques : simulations et caractérisation." Phd thesis, Université de Franche-Comté, 2007. http://tel.archives-ouvertes.fr/tel-00373714.

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Depuis quelques années, la communauté scientifique internationale s'intéresse fortement aux transmissions exaltées de la lumière à travers des films métalliques nanostructurés (ou « tamis à photons ») dans le domaine du visible et de l'infra-rouge. Ces tamis à photons offrent en effet de nombreuses applications dans le domaine de la nanophotonique (microscopie, fluorescence, SERS, génération de second harmonique, lithographie, filtrage, modulation...). Dans ce travail de thèse, nous proposons d'utiliser comme nano-structure une matrice d'ouvertures annulaires percées dans un film opaque d'or ou d'argent. Ce type de cavités coaxiales rend possible l'excitation d'un mode guidé qui permet d'atteindre des transmissions nettement supérieures (90%) à celles obtenues par des tamis à photons basés sur des résonances plasmons. L'étude théorique utilise une méthode numérique basée sur les différences finies dans le domaine temporel pour résoudre les équations de Maxwell. L'influence des paramètres géométriques (diamètre intérieur et extérieur des ouvertures, période de la matrice, épaisseur du film métallique) et de la nature du métal est ainsi étudiée de façon à optimiser la configuration et d'obtenir une forte transmission dans le domaine du visible. Une cartographie du champ à l'intérieur des cavités ainsi qu'à la surface du métal est également calculée afin de caractériser l'exaltation du champ à l'intérieur des cavités et de déterminer la nature du mode guidé. Ce travail théorique s'appuie sur des caractérisations expérimentales effectuées en champ proche et en champ lointain. L'étude en champ proche a permis de cartographier le champ électrique au voisinage immédiat des ouvertures annulaires : la structure expérimentale met en évidence le rôle fondamental du mode TE11 dans l'exaltation de la transmission. Parallèlement, des spectres expérimentaux obtenus en champ lointain confirment, pour un film d'argent, une transmission d'environ 90% en parfait accord avec les prévisions théoriques. Ce résultat constitue, à notre connaissance, une première mondiale et offre de nombreuses perspectives quant aux applications possibles de tels tamis à photons à ouvertures annulaires.
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Poujet, Y. "Transmission exaltée à travers des tamis à photons à ouvertures annulaires nanométriques : simulation et caractérisation." Phd thesis, Université de Franche-Comté, 2007. http://tel.archives-ouvertes.fr/tel-00293093.

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La communauté scientifique internationale s'intéresse fortement aux transmissions exaltées de la lumière à travers des films métalliques nano-structurés ou tamis à photons. Ces structures offrent de nombreuses applications dans le domaine de la nanophotonique. Nous proposons d'utiliser comme nano-structure une matrice d'ouvertures annulaires percées dans un film opaque d'or ou d'argent. Ces cavités coaxiales rendent possible l'excitation d'un mode guidé permettant d'atteindre des transmissions supérieures à celles obtenues par des tamis à photons basés sur des résonances plasmons.
L'étude théorique utilise une méthode numérique basée sur les différences finies dans le domaine temporel pour résoudre les équations de Maxwell. L'influence des paramètres géométriques et de la nature du métal est étudiée de façon à obtenir une forte transmission dans le domaine du visible. Une cartographie du champ à l'intérieur des cavités et à la surface est calculée pour caractériser l'exaltation du champ et déterminer la nature du mode guidé.
Ce travail théorique s'appuie sur des caractérisations expérimentales effectuées en champ proche et en champ lointain. L'étude en champ proche a permis de cartographier le champ électrique au voisinage immédiat des ouvertures annulaires : la structure expérimentale met en évidence le rôle fondamental du mode TE11 dans l'exaltation de la transmission. Des spectres expérimentaux obtenus en champ lointain confirment, pour un film d'argent, une transmission d'environ 90 % en parfait accord avec les prévisions théoriques. Ce résultat constitue, à notre connaissance, une première mondiale.
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Sakat, Émilie. "Structures métal-diélectriques à résonance de mode guidé et applications au filtrage et à l'imagerie infrarouge." Palaiseau, Ecole polytechnique, 2013. http://pastel.archives-ouvertes.fr/pastel-00840623.

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Les nanotechnologies ont atteint une maturité qui permet de concevoir, avec un haut niveau de fiabilité, des composants fonctionnalisés pour des systèmes optiques complexes. Cette thèse traite, dans ce cadre, du filtrage spectral. J'ai ainsi proposé un nouveau concept de filtre composé d'un guide d'onde en diélectrique et d'un réseau métallique sub-longueur d'onde. Dans un premier temps, j'ai conçu, fabriqué et caractérisé des structures (unidimensionnelles 1D ou bidimensionnelles 2D) basées sur ce concept. J'ai mené l'analyse détaillée du mécanisme de résonance, et j'ai étudié les propriétés de ces structures en termes d'accordabilité spectrale, de polarisation, d'efficacité de réjection, et de tolérance angulaire. J'ai par la suite proposé des variantes de ces structures pour en améliorer l'efficacité de réjection et la tolérance angulaire. Dans un deuxième temps, j'ai entrepris d'utiliser les différentes variantes de ce type de composant pour des applications de filtrage angulaire ou d'imagerie multispectrale. Concernant cette dernière, une matrice de 24 filtres a été optimisée et intégrée dans une caméra multispectrale infrarouge cryogénique pour des applications d'estimation de la concentration de CO2 ou de télémétrie. Les difficultés liées aux conditions réelles d'utilisation de la caméra sont mises en évidence et des solutions sont proposées pour améliorer nos résultats, déjà très encourageants
Nanotechnologies have reached a maturity level that allows designing, with high confidence level, functionalized components for complex optical systems. In this context, this work addresses the issue of spectral filtering. I proposed a new design of filter based on the combination of a dielectric waveguide and on a subwavelength metallic grating. In a first time, I fabricated and characterized structures based on this design (with one dimensional 1D or two dimensional 2D geometries). I analyzed in detail the resonance mechanism and I studied the properties of these structures in terms of spectral tunability, polarization behavior, rejection efficiency and angular tolerance. Then, I proposed derivatives of these components with improved rejection efficiency and angular tolerance. Secondarly, I used various derivatives of these components to address angular filtering or multispectral imaging applications. For the latter, a 24-filter matrix has been optimized and integrated inside an infrared multispectral camera for CO2 sensing. Difficulties related to its real use conditions are highlighted and solutions are proposed to improve our results, already promising
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Fiachetti, Cécile. "Modèles du champ électromagnétique aléatoire pour le calcul du couplage sur un équipement électronique en chambre réverbérante à brassage de modes et validation expérimentale." Phd thesis, Université de Limoges, 2002. http://tel.archives-ouvertes.fr/tel-00391379.

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Books on the topic "Modes guidés"

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Al-Jibouri, Khalid Ibrahim G. Electromagnetic linear surface guided modes and plasmon couplers. Salford: University of Salford, 1991.

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Black, Richard J. Optical waveguide modes: Polarization, coupling, and symmetry. New York: McGraw-Hill, 2010.

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Black, Richard J. Optical waveguide modes: Polarization, coupling, and symmetry. New York: McGraw-Hill, 2010.

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G, Hall Dennis, ed. Selected papers on coupled-mode theory in guided-wave optics. Bellingham, Wash: SPIE, 1993.

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Saccuzzo, Dennis P. Property: Substantive law and model essays. San Diego, CA: Applications of Psychology to Law, 2005.

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Saccuzzo, Dennis P. Evidence: Substantive law and model essays. San Diego, Calif: Applications of Psychology to Law, 2005.

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Mallender, Ariane. ABC de la rédaction technique: Modes d'emploi, notices d'utilisation, aides en lignes. Paris: Dunod, 2002.

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Karssemeijer, Nicolaas. Interpretation of medical images by model guided analysis. [s.l.]: [s.n.], 1989.

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K, Dominek Allen, and Lewis Research Center, eds. Constitutive parameter de-embedding using inhomogeneously-filled rectangular waveguides with longitudinal section modes. Columbus, Ohio: Ohio State University, ElectroScience Laboratory, Dept. of Electrical Engineering, 1990.

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Saccuzzo, Dennis P. Contracts & UCC sales: Substantive law and model essays. San Diego, Calif: Applications of Psychology to Law, 2005.

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Book chapters on the topic "Modes guidés"

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Kartchevski, Evgueni, and George Hanson. "Mathematical Analysis of the Guided Modes of Integrated Optical Guides." In Mathematical and Numerical Aspects of Wave Propagation WAVES 2003, 445–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55856-6_71.

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Weik, Martin H. "guided mode." In Computer Science and Communications Dictionary, 700. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_8143.

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Clarke, Edmund M. "SAT-Based Counterexample Guided Abstraction Refinement." In Model Checking Software, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-46017-9_1.

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Singh, Shikhar, Mengshi Zhang, and Sarfraz Khurshid. "Learning Guided Enumerative Synthesis for Superoptimization." In Model Checking Software, 172–92. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30923-7_10.

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Bogomolov, Sergiy, Alexandre Donzé, Goran Frehse, Radu Grosu, Taylor T. Johnson, Hamed Ladan, Andreas Podelski, and Martin Wehrle. "Abstraction-Based Guided Search for Hybrid Systems." In Model Checking Software, 117–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39176-7_8.

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Rose, J. L., S. P. Pelts, and Y. Cho. "A Comb Transducer Model for Guided Wave Mode Control." In Review of Progress in Quantitative Nondestructive Evaluation, 1029–36. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4791-4_132.

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Zhao, Zhiming, and Keith Jeffery. "Reference Model Guided Engineering." In Lecture Notes in Computer Science, 82–99. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52829-4_5.

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Leo, Kevin, Graeme Gange, Maria Garcia de la Banda, and Mark Wallace. "Core-Guided Model Reformulation." In Lecture Notes in Computer Science, 445–61. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58475-7_26.

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Choi, Seungyeob, and Manfred Kerber. "Model-Guided Proof Planning." In Applied Logic Series, 143–62. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0550-0_7.

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Hadzic, Fedja, Henry Tan, and Tharam S. Dillon. "Tree Model Guided Framework." In Mining of Data with Complex Structures, 67–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17557-2_4.

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Conference papers on the topic "Modes guidés"

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Zhang, Alex, Khanh Nguyen, Jens Tuyls, Albert Lin, and Karthik Narasimhan. "Language-guided World Models: A Model-based Approach to AI Control." In Proceedings of the 4th Workshop on Spatial Language Understanding and Grounded Communication for Robotics (SpLU-RoboNLP 2024), 1–16. Stroudsburg, PA, USA: Association for Computational Linguistics, 2024. http://dx.doi.org/10.18653/v1/2024.splurobonlp-1.1.

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Hawkins, R. J., R. J. Deri, and E. Kapon. "Rib profile effects on scattering in semiconductor optical waveguides." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.md4.

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Low-loss semiconductor waveguide components are essential for integrating guided-wave optical components with other optoelectronic devices. Trade-offs between fabrication-related scattering loss and bend radiation loss will determine the smallest size practical for semiconductor integrated-optic devices. Rib waveguides with tight optical confinement (small mode size, large index differences) are required for compact bends but are more susceptible to fabrication-induced scattering loss from rough surfaces. An understanding of how rib geometry affects scattering would provide a valuable tool to optimize guide performance. Although scattering in 1-D planar guides has been extensively investigated theoretically,1,2 a complete model for 2-D rib guides is not available.
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Hadley, G. Ronald, and J. Buus. "Channel-width tailoring of Index-guided arrays." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.fu3.

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Semiconductor laser arrays are attractive as high-power optical sources. However, a systematic design of arrays capable of near-fundamental-mode operation in high-power cw conditions has not yet been reported. In this work we present such a design based on the results of a self-consistent numerical model.1 A previous study of index-guided arrays operating near threshold 2 has suggested the use of modified outer guide widths to achieve a fundamental lateral mode characterized by near-uniform guide intensities. In the present study we used our numerical model to investigate further the performance of this concept in the high-power regime. Because of the sizable index profile contribution arising from thermal effects, we find that modification of only the outer guides is insufficient to insure a near-uniform fundamental mode envelope. Instead, we propose to increase the width of each guide progressively from the device center so as to compensate approximately for the decreasing index of refraction due to thermal effects.
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Kartik, V., and J. A. Wickert. "Surface Friction Guiding for Reduced High Frequency Lateral Vibration of Moving Media." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14853.

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The free and forced vibration of a moving medium is examined in an application where distributed friction guiding is used to control lateral position passively. Sub-ambient pressure features formed in the guides intentionally modify the naturally occurring self-pressurized air bearing and increase the contact force between the medium and the guide's surface. These features increase friction to a level beyond that achievable based on the nominal wrap pressure. The moving medium is modeled as a beam that is transported over frictional regions and that is subjected to prescribed boundary disturbances arising from runout of a cartridge or pack. For axial transport at a speed that is high compared to the vibration velocity, Coulomb friction between the guides and the moving medium can be well-approximated by a derived expression for equivalent viscous damping. The equation of motion is developed for the cases of a single cylindrical guide, and of a multiplicity of guides having arbitrary placement. The level of equivalent damping for each mode decreases with transport speed, and critical speeds exist where each vibration mode transitions between the overdamped and underdamped regimes. Parameter studies in the contact pressure, transport speed, and guide geometry identify preferred design configurations for maximizing dissipation in particular modes and for attenuating high frequency response.
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Dagenais, Kyanna. "Towards Model Repair by Human Opinion--Guided Reinforcement Learning." In MODELS Companion '24: ACM/IEEE 27th International Conference on Model Driven Engineering Languages and Systems, 192–95. New York, NY, USA: ACM, 2024. http://dx.doi.org/10.1145/3652620.3676878.

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Pedroza, Gabriel, and Guillaume Mockly. "Method and framework for security risks analysis guided by safety criteria." In MODELS '20: ACM/IEEE 23rd International Conference on Model Driven Engineering Languages and Systems. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3417990.3420047.

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DiGennaro, Nick, Matthew Stephan, and Eric J. Rapos. "SuMo: A Supportive Modeling Language Environment for Guided Model Transformations." In 2021 ACM/IEEE International Conference on Model Driven Engineering Languages and Systems Companion (MODELS-C). IEEE, 2021. http://dx.doi.org/10.1109/models-c53483.2021.00087.

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Hardy, Amos, and William Streifer. "Coupled-mode theory of parallel waveguides." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.wx8.

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A new coupled-mode formulation for parallel dielectric waveguides is described. The derivation includes radiation modes in addition to the individual guided modes and the coupling equations are obtained by requiring that the additional field be orthogonal to the guided modes. The results apply to any guided modes (TE, TM, or hybrid) in waveguides of arbitrary cross section, dissimilar index, and nonidentical shape. Additional index perturbations not included within the waveguides are encompassed by the theory. Propagation constants and mode patterns for the coupled modes computed according to this theory are shown to agree very well with numerical solutions for the system modes when the latter can be determined. Moreover, the new results are more accurate than those obtained from prior coupled-mode formulations. It is shown that even for lossless guides the coupling coefficient from waveguide b to a and from a to b, described by κ ab and κ bg , respectively, are not related by their complex conjugates if the guides are not identical. This fact does not violate energy conservation or reciprocity when the full expressions for the power flow are used.
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Procter, Sam, and Lutz Wrage. "Guided Architecture Trade Space Exploration: Fusing Model Based Engineering & Design by Shopping." In 2019 ACM/IEEE 22nd International Conference on Model Driven Engineering Languages and Systems (MODELS). IEEE, 2019. http://dx.doi.org/10.1109/models.2019.000-9.

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Wang, Shawe-Shiuan, and Herbert G. Winful. "Continuum model for the dynamics of semiconductor laser arrays." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.mk3.

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We recently presented a coupled-mode theory of the dynamics of semiconductor-laser arrays that showed the existence of certain instabilities in these arrays.1 An implicit assumption of coupled-mode theory is that of weak coupling between the elements. Under that condition, the individual laser elements retain their identities, and their uncoupled fields form proper basis modes for the coupled-mode description. This approach is strictly correct for index-guided laser arrays, in which a built-in index-guide provides lateral confinement of the mode fields within each laser. In gain-guided lasers, the lateral guiding mechanism is much weaker. For such lasers, as well as the recently demonstrated anti guide arrays, a continuum model may be more appropriate. In this paper we present a self-consistent continuum model for the dynamics of semiconductor-laser arrays. The model is based on the solution of a pair of coupled partial differential equations for the complex field and the carrier density in the array. This model has been applied successfully to both gain-guided and index-guided laser arrays. By varying the center-to-center spacing between the waveguides, we have mapped out regions of stable and unstable temporal behavior in the laser output.
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Reports on the topic "Modes guidés"

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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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Valenzuela, Ernesto, Thomas Hertel, Roman Keeney, and Jeff Reimer. Assessing Global CGE Model Validity Using Agricultural Price Volatility. GTAP Working Paper, September 2005. http://dx.doi.org/10.21642/gtap.wp32.

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Computable General Equilibrium (CGE) models are commonly used for global agricultural market analysis. However, concerns are sometimes raised about the quality of their output since key parameters may not be econometrically estimated and little emphasis is generally given to model assessment. This article addresses the latter issue by developing an approach to validating CGE models based on the ability to reproduce observed price volatility in agricultural markets. We show how patterns in the deviations between model predictions and validation criteria can be used to identify the weak points of a model and guide development of improved specifications with firmer empirical foundations.
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Bynum, Nora, Georgina Cullman, Margret Domroese, Carol Fialkowski, and Eleanor J. Sterling. Student-Active Teaching Techniques. American Museum of Natural History, 2009. http://dx.doi.org/10.5531/cbc.ncep.0027.

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This module introduces a variety of methods for active teaching and learning, guided by research on learning models and styles. Studies show that active teaching and learning techniques engage students and help them to understand and apply what they learn. This module covers learning models to guide teachers in engaging their students and introduces a variety of methods for active teaching: interactive lectures, discussions, case studies, collaborative learning (group work and peer teaching), and classroom and field exercises.
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McKay, S., Nate Richards, and Todd Swannack. Ecological model development : evaluation of system quality. Engineer Research and Development Center (U.S.), September 2022. http://dx.doi.org/10.21079/11681/45380.

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Ecological models are used throughout the US Army Corps of Engineers (USACE) to inform decisions related to ecosystem restoration, water operations, environmental impact assessment, environmental mitigation, and other topics. Ecological models are typically developed in phases of conceptualization, quantification, evaluation, application, and communication. Evaluation is a process for assessing the technical quality, reliability, and ecological basis of a model and includes techniques such as calibration, verification, validation, and review. In this technical note (TN), we describe an approach for evaluating system quality, which generally includes the computational integrity, numerical accuracy, and programming of a model or modeling system. Methods are presented for avoiding computational errors during development, detecting errors through model testing, and updating models based on review and use. A formal structure is proposed for model test plans and subsequently demonstrated for a hypothetical habitat suitability model. Overall, this TN provides ecological modeling practitioners with a rapid guide for evaluating system quality.
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Gelain, Paolo, and Pierlauro Lopez. A DSGE Model Including Trend Information and Regime Switching at the ZLB. Federal Reserve Bank of Cleveland, December 2023. http://dx.doi.org/10.26509/frbc-wp-202335.

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This paper outlines the dynamic stochastic general equilibrium (DSGE) model developed at the Federal Reserve Bank of Cleveland as part of the suite of models used for forecasting and policy analysis by Cleveland Fed researchers, which we have nicknamed CLEMENTINE (CLeveland Equilibrium ModEl iNcluding Trend INformation and the Effective lower bound). This document adopts a practitioner's guide approach, detailing the construction of the model and offering practical guidance on its use as a policy tool designed to support decision-making through forecasting exercises and policy counterfactuals.
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Stiles, D. L., and V. L. Crow. Solid Waste Projection Model: Model user's guide. Office of Scientific and Technical Information (OSTI), August 1990. http://dx.doi.org/10.2172/6825186.

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Harris, Aubrey, Nathan Richards, and S. McKay. Defining levels of effort for ecological models. Engineer Research and Development Center (U.S.), September 2023. http://dx.doi.org/10.21079/11681/47642.

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While models are useful tools for decision-making in environmental management, the question arises about the level of effort required to develop an effective model for a given application. In some cases, it is unclear whether more analysis would lead to choosing a better course of action. This technical note (TN) examines the role of ecological model complexity in ecosystem management. First, model complexity is examined through the lens of risk informed planning. Second, a framework is presented for categorizing five different levels of effort that range from conceptual models to detailed predictive tools. This framework is proposed to enhance communication and provide consistency in ecological modeling applications. Third, the level of effort framework is applied to a set of models in the Middle Rio Grande River system to demonstrate the framework’s utility and application. Ultimately, this TN seeks to guide planners in determining an appropriate level of effort relative to risks associated with uncertainty and resource availability for a given application.
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Wiest, Samantha, Darixa Hernandez-Abrams, and S. McKay. Review of riparian models for assessing ecological impacts and benefits. Engineer Research and Development Center (U.S.), October 2023. http://dx.doi.org/10.21079/11681/47706.

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Riparian zones are key transitional ecosystems between upland and aquatic zones, and these systems are often degraded due to both land use change and stream processes (e.g., deforestation and water impoundments and/or diversions). These important ecosystems require restoration because of the many benefits they provide ranging from providing habitat for diverse species to promoting water quality. Restoration practitioners, regulators, and researchers require riparian assessment methods and models to efficiently guide mitigation and restoration planning. This technical note (TN) compiles a subset of existing riparian tools and evaluates them relative to model objectives, modeling approach, and input variables. Findings are synthesized into a gap analysis of these models to inform future riparian model development and improve riparian assessment.
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Rezaei-Hartmann, Nasim, and Rebecca Saive. A step-by-step guide to simulating an ant-like piezoelectric robot. University of Twente, 2023. http://dx.doi.org/10.3990/1.9789036556330.

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This tutorial is about building up a COMSOL model for a robot ant. In this model, we have a robot with a size of a few centimeters and which is based on piezoelectric ceramics. This robot has already been built by the University of Michigan and some COMSOL models only for the legs’ operation are already existing and are published. From what we know, the full ant robot had not been computationally simulated before. Here, we provide a tutorial on how to successfully achieve this task. Furthermore, we uploaded a video on YouTube to visualize the results: https://youtu.be/ePyD8TAQt3I
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Wang, Dali, Shih-Chieh Kao, and Daniel Ricciuto. Development of Explainable, Knowledge-Guided AI Models to Enhance the E3SM Land Model Development and Uncertainty Quantification. Office of Scientific and Technical Information (OSTI), April 2021. http://dx.doi.org/10.2172/1769696.

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