Relevant bibliographies by topics / Boucle interactive

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

Academic literature on the topic 'Boucle interactive'

Author: Grafiati
Published: 16 July 2022

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Journal articles on the topic "Boucle interactive"

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LEPAGE, C., H. RABESONA, S. KOZIN, et al. "Approche physicochimique de la structure de la protéine prion PrPc : Plasticité conformationnelle de peptides de la région 121-170 (H1-S2) de la protéine prion ovine." INRAE Productions Animales 17, HS (2004): 39–44. http://dx.doi.org/10.20870/productions-animales.2004.17.hs.3624.

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Le passage de la forme non pathogène de la protéine prion normalement présente chez l’individu sain (PrPC) vers la forme pathogène (PrPSc) se traduit par une augmentation de la proportion de feuillet bêta dans la protéine, favorisant son agrégation, la formation de fibrilles et la résistance à la protéinase K. La structure tridimensionnelle de PrPC, déterminée pour quatre espèces, est extrêmement conservée. Elle comporte un segment désordonné et très flexible à l’extrémité N-terminale et une partie globulaire, constituée de deux brins bêta (S1, S2) et de trois hélices alpha (H1 à H3) associés
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Iyer, Harini, Melanie Issigonis, Prashant P. Sharma, Cassandra G. Extavour, and Phillip A. Newmark. "A premeiotic function for boule in the planarian Schmidtea mediterranea." Proceedings of the National Academy of Sciences 113, no. 25 (2016): E3509—E3518. http://dx.doi.org/10.1073/pnas.1521341113.

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Mutations in Deleted in Azoospermia (DAZ), a Y chromosome gene, are an important cause of human male infertility. DAZ is found exclusively in primates, limiting functional studies of this gene to its homologs: boule, required for meiotic progression of germ cells in invertebrate model systems, and Daz-like (Dazl), required for early germ cell maintenance in vertebrates. Dazl is believed to have acquired its premeiotic role in a vertebrate ancestor following the duplication and functional divergence of the single-copy gene boule. However, multiple homologs of boule have been identified in some
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Bailly, Gérard, Frédéric Elisei, and Stephan Raidt. "Boucles de perception-action et interaction face-à-face." Revue française de linguistique appliquée XIII, no. 2 (2008): 121. http://dx.doi.org/10.3917/rfla.132.0121.

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Alshukur, Malek, Alex Fotheringham, and Hugh R. Gong. "Relationship between the Interaction of Bending Stiffness of Component Yarns and the Structure of Fancy Bouclé and Semi-bouclé Yarns." Fibers and Polymers 21, no. 2 (2020): 437–46. http://dx.doi.org/10.1007/s12221-020-8156-0.

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Gao, Liuze, Shuhui Chang, Wenjuan Xia, et al. "Circular RNAs from BOULE play conserved roles in protection against stress-induced fertility decline." Science Advances 6, no. 46 (2020): eabb7426. http://dx.doi.org/10.1126/sciadv.abb7426.

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Circular RNAs (circRNAs) are a large family of newly identified transcripts, and their physiological roles and evolutionary significance require further characterization. Here, we identify circRNAs generated from a conserved reproductive gene, Boule, in species from Drosophila to humans. Flies missing circular Boule (circBoule) RNAs display decreased male fertility, and sperm of circBoule knockout mice exhibit decreased fertilization capacity, when under heat stress conditions. During spermatogenesis, fly circBoule RNAs interact with heat shock proteins (HSPs) Hsc4 and Hsp60C, and mouse circBo
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Urano, Jun, Mark S. Fox, and Renee A. Reijo Pera. "Interaction of the conserved meiotic regulators, BOULE (BOL) and PUMILIO-2 (PUM2)." Molecular Reproduction and Development 71, no. 3 (2005): 290–98. http://dx.doi.org/10.1002/mrd.20270.

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Klahold, Walter M., Wolfgang J. Choyke, and Robert P. Devaty. "High Resolution Optical Spectroscopy of Free Exciton and Electronic Band Structure near the Fundamental Gap in 4H SiC." Materials Science Forum 924 (June 2018): 239–44. http://dx.doi.org/10.4028/www.scientific.net/msf.924.239.

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We use thick, relatively high purity 4H SiC boule material to measure the wavelength modulated absorption spectrum with improved wavelength resolution and sensitivity with respect to previous work. We observe several small 0.6 ± 0.1 meV splittings, which we attribute to electron mass anisotropy and electron-hole exchange interaction. In addition, we identify several features in the absorption spectrum as signatures of nonparabolicity in the free exciton dispersion relations, the primary origin of which is likely the nonparabolic energy dispersion of the valence bands, as revealed by published
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Sommier, Béatrice. "Performance du bouche à oreille sur la visite d’une exposition : une interaction socialement déterminée." Recherches en Sciences de Gestion 116, no. 5 (2016): 53. http://dx.doi.org/10.3917/resg.116.0053.

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Boulle, A., and V. Mergnac. "RaDMaX online: a web-based program for the determination of strain and damage profiles in irradiated crystals using X-ray diffraction." Journal of Applied Crystallography 53, no. 2 (2020): 587–93. http://dx.doi.org/10.1107/s1600576720002514.

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RaDMaX online is a major update to the previously published RaDMaX (radiation damage in materials analysed with X-ray diffraction) software [Souilah, Boulle & Debelle (2016). J. Appl. Cryst. 49, 311–316]. This program features a user-friendly interface that allows retrieval of strain and disorder depth profiles in irradiated crystals from the simulation of X-ray diffraction data recorded in symmetrical θ/2θ mode. As compared with its predecessor, RaDMaX online has been entirely rewritten in order to be able to run within a simple web browser, therefore avoiding the necessity to install any
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Kunze, Thomas, Martin Heß, and Gerhard Haszprunar. "3D-interactive microanatomy ofVentsia tricarinataWarén & Bouchet, 1993 (Vetigastropoda: Seguenzioidea) from Pacific hydrothermal vents." Journal of Molluscan Studies 82, no. 3 (2016): 366–77. http://dx.doi.org/10.1093/mollus/eyw002.

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Dissertations / Theses on the topic "Boucle interactive"

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Collin, Delphine. "Etudes par methodes spectroscopiques de complexes d'oligonucleotides (motifs-i et interaction boucle-boucle) (doctorat : pharmacochimie)." Paris 11, 1999. http://www.theses.fr/1999PA114835.

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Hamelin, Philippe. "Simulation avec matériel dans la boucle d'un robot en interaction avec un environnement réel." Mémoire, École de technologie supérieure, 2008. http://espace.etsmtl.ca/135/1/HAMELIN_Philippe.pdf.

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Le développement de systèmes robotisés nécessite généralement plusieurs itérations, qui peuvent être basées sur une approche par simulation, par réalisation d'un prototype physique ou une combinaison des deux. D'une part, le développement à l'aide de la simulation doit tenir compte non seulement de la modélisation du robot, mais également de celle de son environnement. Malheureusement, le modèle de l'environnement n'est pas toujours bien connu et peut être imprécis. D'autre part, le développement basé sur la fabrication d'un prototype physique, permet de palier aux problèmes de mauvaise
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Barles, Pierre. "Comportement dynamique d'une boucle de chauffage à eau en interaction avec une enveloppe de bâtiment." Nice, 1990. http://www.theses.fr/1990NICE4427.

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Ce travail de thèse traite principalement de la modélisation du comportement thermique, en régime dynamique, des radiateurs à eau. Il s'appuie sur un important volet expérimental ; les expériences ont été réalisées sur une cellule test en ambiance naturelle, représentative d'un logement courant (la cellule DESYS). L’analyse des résultats expérimentaux a conduit à développer des modèles réduits d'ordre 1 dont la variable est soit la température du fluide à la sortie de l'émetteur, soit la température moyenne du fluide dans l'émetteur. Ces deux types de modèles sont comparés. Il est démontré qu'
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Boucaud, Fabien. "Un agent touchant : modélisation du toucher social dans les interactions humain-agent en environnement immersif." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2666.

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Malgré la puissance de nos technologies de communication actuelles pour maintenir du contact social dans des situations extrêmes, elles restent insuffisantes pour totalement combler les sentiments de solitude et d'isolement. Le toucher social, est essentiel au bien-être humain, nous permet de développer et raffermir nos liens relationnels et est un puissant canal de communication des émotions. Le présent travail de thèse s'intéresse à la façon dont on peut munir des agents artificiels de capacités de toucher social. Qu'il s'agisse de robots ou de personnages virtuels, ces nouvelles entités soc
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Gross, David. "Nage sous marine générée par boucle de rétroaction de courbure avec modélisation de muscles locomoteurs." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4053.

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L'autopropulsion basée sur la propagation d'ondes de déformation, comme pour les poissons, pourrait être une alternative intéressante par rapport au déplacement généré par des hélices pour les bateaux et les véhicules sous-marins. La locomotion par ondulations implique une flexibilité de la structure du véhicule, dont il faut prendre en compte pour la dynamique des fluides et donc quantifier la vitesse et le rendement du déplacement. Dans cette thèse, nous avons développé une nouvelle méthode d'interaction fluide-structure (IFS) liant un solveur de dynamique de structure par éléments finis ave
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Gómez, Díez María Isabel. "Je n'ai que ma bouche : prácticas interactivas y discursivas en el procedimiento de solicitud de asilo en Bélgica." Doctoral thesis, Universitat Pompeu Fabra, 2008. http://hdl.handle.net/10803/22648.

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El objeto de estudio de esta tesis es la interacción que se produce en las audiencias de solicitud de asilo en Bélgica y los textos escritos que se generan en el procedimiento, principalmente, informes de audiencia y resoluciones. El primer objetivo de esta investigación es identificar las prácticas interactivas y discursivas de los agentes que puedan perjudicar la administración con justicia del asilo, bien porque perjudican a los solicitantes, bien porque dificultan la tarea de los organismos de asilo de evaluar la credibilidad de las declaraciones de los solicitantes. Por prácticas interact
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Voros, Sandrine. "Vers la commande en boucle fermée d'un robot porte-optique : apport de l'analyse contextuelle d'images endoscopiques." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2006. http://tel.archives-ouvertes.fr/tel-00257239.

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Les progrès de l'instrumentation ont été indispensables au développement de la cœlioscopie, permettant de combiner l'efficacité de la chirurgie avec une voie d'abord mini-invasive. Les systèmes robotisés font maintenant partie de l'arsenal dans l'assistance à la réalisation d'une intervention par technique mini-invasive, mais leur intérêt reste encore controversé en raison de leur encombrement, leur coût et les transformations qu'ils risquent d'imposer à la pratique chirurgicale. Les problématiques de recherche dans le domaine de la cœlioscopie robotisée visent une meilleure adaptation de ces
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Ducongé, Frédéric. "Sélection in vitro d'aptamères ARN pouvant interagir avec la structure ARN TAR du VIH-1." Bordeaux 2, 1999. http://www.theses.fr/1999BOR28671.

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Romilly, Cédric. "Fonctions de nouveaux ARN non codant dans la régulation de l'expression des gènes chez Staphylococcus aureus : adaptation à l'environnement et virulence." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00829094.

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Staphylococcus aureus, pathogène opportuniste de l'homme, est responsable de 30% des infections nosocomiales. L'apparition de souches multi résistantes aux antibiotiques en font un problème majeur de santé publique. La pathogénie de la bactérie résulte de l'expression d'une pléthore de facteurs de virulence, mais quels sont les mécanismes de régulation contrôlant l'expression de ces gènes ? Aujourd'hui, il est clairement établi que les ARN non-codant sont des molécules clés dans la régulation de l'expression des gènes. Plus de 50 ARN ont été identifiés chez S. aureus. Néanmoins la fonction de
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Ménard, Olivier. "Mécanismes d'inspiration corticale pour l'apprentissage et la représentation d'asservissements sensori-moteurs en robotique." Phd thesis, Université Henri Poincaré - Nancy I, 2006. http://tel.archives-ouvertes.fr/tel-00118053.

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Cette thèse vise à réaliser un asservissement sensori-moteur, en vue<br />de l'employer dans le domaine de la robotique, en utilisant des<br />algorithmes s'inspirant de la biologie corticale. Nous espérons, en<br />agissant ainsi, reproduire au mieux les qualités de robustesse,<br />d'uniformité de structure et d'adaptabilité dont le cortex est<br />pourvu. Nous avons basé notre modèle, au niveau computationnel, sur le<br />principe des automates cellulaires étendus, ce qui nous amène à<br />programmer des unités au sein de cartes, qui représentent chacune<br />l'équivalent, en biologie, d'un
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Books on the topic "Boucle interactive"

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Fondation littéraire Fleur de lys, ed. Boule de lumière: Conte interactif : aide à la séparation. Fondation littéraire Fleur de Lys, 2006.

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Book chapters on the topic "Boucle interactive"

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Ren, Jie. "Phase Relationship Between ULF Waves and Drift-Bounce Resonant Particles." In ULF Waves’ Interaction with Cold and Thermal Particles in the Inner Magnetosphere. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9378-6_5.

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Li, Dong, Yunhua Zhang, Liting Liang, Jiefang Yang, and Xun Wang. "Monitoring of Tsunami/Earthquake Damages by Polarimetric Microwave Remote Sensing Technique." In Tsunami - Damage Assessment and Medical Triage. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.91242.

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Polarization characterizes the vector state of EM wave. When interacting with polarized wave, rough natural surface often induces dominant surface scattering; building also presents dominant double-bounce scattering. Tsunami/earthquake causes serious destruction just by inundating the land surface and destroying the building. By analyzing the change of surface and double-bounce scattering before and after disaster, we can achieve a monitoring of damages. This constitutes one basic principle of polarimetric microwave remote sensing of tsunami/earthquake. The extraction of surface and double-bounce scattering from coherency matrix is achieved by model-based decomposition. The general four-component scattering power decomposition with unitary transformation (G4U) has been widely used in the remote sensing of tsunami/earthquake to identify surface and double-bounce scattering because it can adaptively enhance surface or double-bounce scattering. Nonetheless, the strict derivation in this chapter conveys that G4U cannot always strengthen the double-bounce scattering in urban area nor strengthen the surface scattering in water or land area unless we adaptively combine G4U and its duality for an extended G4U (EG4U). Experiment on the ALOS-PALSAR datasets of 2011 great Tohoku tsunami/earthquake demonstrates not only the outperformance of EG4U but also the effectiveness of polarimetric remote sensing in the qualitative monitoring and quantitative evaluation of tsunami/earthquake damages.
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Khriplovich, I. B. "BIG BOUNCE AND INFLATION FROM GRAVITATIONAL FOUR-FERMION INTERACTION." In Low Dimensional Physics and Gauge Principles. WORLD SCIENTIFIC, 2013. http://dx.doi.org/10.1142/9789814440349_0015.

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Johnsen, Sönke. "Scattering with Interference." In The Optics of Life. Princeton University Press, 2011. http://dx.doi.org/10.23943/princeton/9780691139906.003.0006.

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This chapter studies wave interference. Light does not bend in a lens, it does not bounce off the surface of glass, and it does not spread out after passing through a small hole. All of these are illusions. It only appears that light bends, bounces, and spreads out. The effects that people see—reflection, refraction, colors in soap bubbles—come from the fact that photons interact with one another in an unusual way. The interaction is often referred to as wave interference because it can be described mathematically much like the interference of water waves, but the reality of it is considerably stranger. The strangeness is discussed in more detail in the last chapter, but a hint of it can be seen from the fact that photons appear to interfere with one another even if they are emitted one at a time, which water waves obviously do not do.
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Krishnamurti, T. N., H. S. Bedi, and V. M. Hardiker. "Multilevel Global Spectral Model." In An Introduction to Global Spectral Modeling. Oxford University Press, 1998. http://dx.doi.org/10.1093/oso/9780195094732.003.0009.

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Since the 1970s, the spectral method has become an increasingly popular technique for global numerical weather prediction. Global numerical models formulated using the spectral technique are used worldwide for both research and operational purposes. The success of the spectral technique can be attributed to the spectral transform technique developed independently by Eliasen et al. (1970) and Orszag (1970), and later refined by Bourke (1972). Prior to the introduction of the transform technique, the nonlinear terms were computed using a very tedious process called the interaction coefficients method. This method required large amounts of computer resources as well as enormous bookkeeping. The transform technique facilitates the computation of the nonlinear terms, as discussed later in Section 7.4. Furthermore, the Galerkin method discussed in Chapter 4 is widely used in most spectral models and provides us with alias-free computation of the nonlinear terms. The transform technique enables the current spectral models to be competitive in terms of computational overhead with respect to their grid-point counterparts. The transform technique is also well-suited for incorporating the terms dealing with physics in the prediction scheme. There are a number of advantages to using the spectral technique over the conventional grid-point method. However, we will not get into this discussion here. It should be noted that the model truncation limit specifies the scale of the shortest wavelength that can be resolved by the model. In the following section, we discuss the two most widely used truncations in a spectral model.
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Margolus, Norman H. "Universal Cellular Automata Based on the Collisions of Soft Spheres." In New Constructions in Cellular Automata. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195137170.003.0013.

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Fredkin’s Billiard Ball Model (BBM) is a continuous classical mechanical model of computation based on the elastic collisions of identical finite-diameter hard spheres. When the BBM is initialized appropriately, the sequence of states that appear at successive integer time steps is equivalent to a discrete digital dynamics. Here we discuss some models of computation that are based on the elastic collisions of identical finite-diameter soft spheres: spheres which are very compressible and hence take an appreciable amount of time to bounce off each other. Because of this extended impact period, these Soft Sphere Models (SSMs) correspond directly to simple lattice gas automata—unlike the fast-impact BBM. Successive time steps of an SSM lattice gas dynamics can be viewed as integer-time snapshots of a continuous physical dynamics with a finite-range soft-potential interaction. We present both two-dimensional and three-dimensional models of universal CAs of this type, and then discuss spatially efficient computation using momentum conserving versions of these models (i.e., without fixed mirrors). Finally, we discuss the interpretation of these models as relativistic and as semiclassical systems, and extensions of these models motivated by these interpretations. Cellular automata (CA) are spatial computations. They imitate the locality and uniformity of physical law in a stylized digital format. The finiteness of the information density and processing rate in a CA dynamics is also physically realistic. These connections with physics have been exploited to construct CA models of spatial processes in Nature and to explore artificial “toy” universes. The discrete and uniform spatial structure of CA computations also makes it possible to “crystallize” them into efficient hardware [17, 21]. Here we will focus on CAs as realistic spatial models of ordinary (nonquantum- coherent) computation. As Fredkin and Banks pointed out [2], we can demonstrate the computing capability of a CA dynamics by showing that certain patterns of bits act like logic gates, like signals, and like wires, and that we can put these pieces together into an initial state that, under the dynamics, exactly simulates the logic circuitry of an ordinary computer.
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Conference papers on the topic "Boucle interactive"

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Nishino, Toshiki, and Akihiro Matsuura. "Magic Bounce: Playful Interaction on Superelastic Display." In 2020 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW). IEEE, 2020. http://dx.doi.org/10.1109/vrw50115.2020.00191.

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Khoja, Suleman, and Daniel Attinger. "High-Speed Visualization of Bubbles Interacting With a Solid Surface." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15064.

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Bubbles around a solid surface moving in a fluid at high Reynolds number drastically reduce the associated turbulent drag. In this paper, we present experiments on the interaction of air bubbles with a solid wall. The design of an experimental setup is described, that allows generating bubbles with diameters of 0.4 to 2 mm and observes their interaction with a solid wall whose angle with the horizontal can be controlled. Depending on the bubble size and angle of inclination of the solid wall, the bubbles bounce off or slide along the wall. High-speed visualizations of the bubble-wall interacti
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Crittenden, S. "Intrinsic Harmonic Distortion of Atomic Force Microscopy Cantilever Position Detection Methods." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80474.

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There has been recent interest in the utility and physical information content of higher harmonics in Atomic Force Microscopy: theoretically as a way to better understand the dynamical behavior of the cantilever-sample system and experimentally both as feedback signals to enhance scanning stability under liquid and as indicators of the properties of the tip-sample interaction force such as the Hamaker constant and Young’s Modulus. However, the great majority of investigations of cantilever motion have assumed the cantilever position detection system to be linear in cantilever position when in
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Gaskell, Jack G., Matthew McGilvray, and David R. H. Gillespie. "A Discrete Element Methods-Based Model for Particulate Deposition and Rebound in Gas Turbines." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58477.

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Abstract The secondary air system and cooling passages of gas turbine components are prone to blockage from sand and dust. Prediction of deposition requires accurate models of particle transport and thermo-mechanical interaction with walls. Bounce stick models predict whether a particle will bounce, stick, or shatter upon impact and calculate rebound trajectories if applicable. This paper proposes an explicit bounce stick model that uses analytical solutions of adhesion, plastic deformation and viscoelasticity to time-resolve collision physics. The Discrete-Element Methods (DEM) model shows go
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Zhang, Junfeng, and Daniel Y. Kwok. "On the Slip Mechanism of Microfluidics by Means of a Mean-Field Free-Energy Lattice Boltzmann Method." In ASME 3rd International Conference on Microchannels and Minichannels. ASMEDC, 2005. http://dx.doi.org/10.1115/icmm2005-75170.

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In this paper, we studied liquid-solid slip by employing a mean-field free-energy lattice Boltzmann approach recently proposed [Zhang et al., Phy. Rev. E. 69, 032602, 2004]. With a general bounce-back no-slip boundary condition applied to the interface, liquid slip was observed because of the specific fluid-solid interaction. The slip length is clearly related to the interaction strength: the stronger the interaction, the less hydrophobic the surface and hence results in less slipping. Unlike other lattice Boltzmann models, a contact angle value between 0–180° can be generated here without usi
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Wang, Weicheng, and Yu Sun. "An Adaptive and Interactive 3D Simulation Platform for Physics Education using Machine Learning and Game Engine." In 5th International Conference on Computer Science and Information Technology (COMIT 2021). Academy and Industry Research Collaboration Center (AIRCC), 2021. http://dx.doi.org/10.5121/csit.2021.111705.

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When undergraduate students just got into the physics field, it might be difficult for them to understand, think, and imagine what is happening in certain phenomenons [6]. For example, when two objects have different masses and velocity collide into each other, how are they going to act? Are they going to stop, bounce away from each other, or stick together? This simulation helps the students who do not feel comfortable imagining these scenarios. Currently we only have the gravitation lab, the trajectory lab, and the collision lab. The gravitation lab is a planet orbiting a sun, where the user
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Zhang, Huang, and HanLiang Bo. "Numerical Prediction of the Outcomes of Binary-Droplet Collision in Steam-Water Separator." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15296.

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A theoretical model is carried out to describe the regimes of binary-droplet collision in steam-water separator (SWS). Different from previous researches which seldom concerned the interaction between droplets moving in the SWS, this study indicates that droplet collision, especially the binary-droplet collision, is a key factor to influence the efficiency of SWS. Four regimes of binary-droplet collision including bounce, coalescence, reflexive separation and stretching separation are considered. A brief summary is showed how this theoretical model is established according to previous papers.
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Sarker, Md Mejbahul, D. Geoff Rideout, and Stephen D. Butt. "Advantages of an LQR Controller for Stick-Slip and Bit-Bounce Mitigation in an Oilwell Drillstring." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87856.

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Failure of oilwell drillstrings is very costly in terms of money and time. There are many reasons for drillstring failure, such as vibration, fatigue, and buckling. Stick-slip vibration has received considerable attention in recent years with increasing use of polycrystalline diamond compact (PDC) bits in harder formations, and has motivated extensive research on this type of drillstring vibration. This paper addresses the advantages of a linear quadratic regulator (LQR) controller, compared to a spring-damper isolator, for stick-slip and bit-bounce mitigation in an oilwell drillstring. A bond
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Kim, Baik Jin, Alan Palazzolo, and Mohamed Gharib. "Drillstring Simulator: A Novel Software Model for Stick–Slip And Bit-Bounce Vibrations." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-73717.

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Abstract Drillstring vibration can be highly detrimental to its mechanical integrity, and significantly reduce overall operational efficiency. Vibrations often arise due to the contact force and moment arising at the bit and formation (rock). These occur due to cutting and friction related actions. The literature has various bit-rock interaction BRI models, which may have time delay and nonlinear terms. The time delay term arises from modulation of the depth of cut per revolution by the vertical vibrations. A major inertia participating in the vibrations is the bottom hole assembly BHA, consis
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Lin, Jeng-Wen, Chong-Shien Tsai, and Wen-Shin Chen. "Identification of Structural Systems Under Tri-Directional Seismic Excitations Using a Statistically Refined Bouc-Wen Model." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26136.

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This paper presents the identification of structural systems under tri-directional seismic excitations using a statistically refined Bouc-Wen model of tri-axial interaction. Through limited vibration measurements in the National Center for Research on Earthquake Engineering in Taiwan, the Bouc-Wen model has been statistically and repetitively refined using the 95% confidence interval of the estimated structural parameters so as to determine their statistical significance in a multiple regression setting. The effectiveness of the refined model has been shown considering the effects of the sampl
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