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Academic literature on the topic 'Applications de Voisin'

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Published: 7 July 2024

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Contents

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

Journal articles on the topic "Applications de Voisin":

1

Charles, François, Giovanni Mongardi, and Gianluca Pacienza. "Families of rational curves on holomorphic symplectic varieties and applications to 0-cycles." Compositio Mathematica 160, no. 2 (December 18, 2023): 288–316. http://dx.doi.org/10.1112/s0010437x20007526.

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We study families of rational curves on irreducible holomorphic symplectic varieties. We give a necessary and sufficient condition for a sufficiently ample linear system on a holomorphic symplectic variety of $K3^{[n]}$ -type to contain a uniruled divisor covered by rational curves of primitive class. In particular, for any fixed $n$ , we show that there are only finitely many polarization types of holomorphic symplectic variety of $K3^{[n]}$ -type that do not contain such a uniruled divisor. As an application, we provide a generalization of a result due to Beauville–Voisin on the Chow group of $0$ -cycles on such varieties.
2

Moine, Monique, Henri Giraud, and Anne Puissant. "Mise en place d'une méthode semi-automatique de cartographie de l'occupation des sols à partir d'images SAR polarimétriques." Revue Française de Photogrammétrie et de Télédétection, no. 215 (August 16, 2017): 13–23. http://dx.doi.org/10.52638/rfpt.2017.319.

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Les cartes d'occupation du sol produites à des résolutions spatiales et temporelles élevées constituent actuellement une ressource très importante pour beaucoup d'organismes privés ou publics. Le développement de méthodes de cartographie automatique, fiables et robustes basées sur la classification d'images satellites constitue ainsi un enjeu majeur. Dans ce cadre, l'imagerie radar apporte l'avantage de fournir des images de jour comme de nuit, et quelles que soient les conditions météorologiques. Plus récemment, l'exploitation des informations de rétrodiffusion fournies par les images SAR (Synthetic Aperture Radar) polarimétriques a permis d'étendre les possibilités apportées par l'imagerie radar. Dans cette étude, une carte d'occupation du sol a été produite sur une partie de la plaine d'Alsace et du massif vosgien à partir (1) de 76 paramètres polarimétriques extraits d'une image ALOS PALSAR en polarisation quadruple et (2) d'une méthode de classification orientée-objet. Plusieurs algorithmes de classification ont été testés et l'algorithme du plus proche voisin est ressorti comme donnant les meilleurs résultats. La méthode mise en place à l'avantage d'être semi-automatique et facilement reproductible. Neuf classes d'occupation du sol ont été cartographiées avec un taux de bon classement de 69%. Plus précisément, trois d'entre elles ont été très correctement détectées : la forêt, l'urbain et l'eau. D'autres classes ont été confondues du fait de la similarité de leur signature polarimétrique : les zones de vignobles, les prairies et les zones de cultures. Enfin, trois classes non visibles sur les données a priori et les images optiques de référence ont pu être identifiées sur l'image polarisée. Ces premiers résultats sont prometteurs pour la cartographie de l'occupation des sols à partir d'images SAR polarimétriques.
3

Dai, Qingsong. "A review of the Research on Tunnel Lining Voiding Detection Based on Acoustic Vibration Method." Academic Journal of Science and Technology 10, no. 1 (March 26, 2024): 267–71. http://dx.doi.org/10.54097/yk2ssn30.

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In the study of nondestructive testing technology for tunnel lining voiding detection, the traditional nondestructive testing technology has many drawbacks such as poor detection accuracy, high subjectivity, and easy to be interfered with, etc., and the combination of acoustic vibration method and deep learning technology has the problems of uneven distribution of the data set, poor interpretability, and other problems that are difficult to be applied to industrial applications, which summarizes the current acoustic vibration testing technology and its application to the study of tunnel lining voiding. Firstly, the non-destructive testing techniques used in the current tunnel lining voiding detection research are sorted out, and then a variety of tunnel lining voiding detection research methods based on acoustic vibration method with potential applications in the industrial field are analyzed, followed by an overview of the current situation from the point of view of deep learning combined with the acoustic vibration method for the detection of tunnel lining voiding, and then the direction of the next step of the research is discussed and analyzed. The full paper is summarized, and future challenges are pointed out.
4

Shchekoturov, I. O., R. F. Bakhtiozin, A. L. Istranov, and N. S. Serova. "APPLICATION OF VOLUMETRIC DYNAMIC VOIDING COMPUTED CYSTURETROGRAPHY IN URETHRAL STRICTURE DIAGNOSIS BEFORE AND AFTER RECONSTRUCTIVE SURGERY." Russian Electronic Journal of Radiology 12, no. 2 (2022): 124–31. http://dx.doi.org/10.21569/2222-7415-2022-12-2-124-131.

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Rackley, Raymond, and Joseph Abdelmalak. "Urologic applications of botulinum toxin therapy for voiding dysfunction." Current Urology Reports 5, no. 5 (September 2004): 381–88. http://dx.doi.org/10.1007/s11934-004-0088-5.

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Franken, Jan, Helene De Bruyn, Roma Rietjens, Andrei Segal, Dirk De Ridder, Wouter Everaerts, Thomas Voets, and Greetje Vande Velde. "X-ray videocystometry for high-speed monitoring of urinary tract function in mice." Science Advances 7, no. 30 (July 2021): eabi6821. http://dx.doi.org/10.1126/sciadv.abi6821.

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Lower urinary tract dysfunction (LUTd) represents a major health care problem with a high, unmet medical need. Design of additional therapies for LUTd requires precise tools to study bladder storage and voiding (dys)function in animal models. We developed videocystometry in mice, combining intravesical pressure measurements with high-speed fluoroscopy of the urinary tract. Videocystometry substantially outperforms current state-of-the-art methods to monitor the urine storage and voiding process, by enabling quantitative analysis of voiding efficiency, urethral flow, vesicoureteral reflux, and the relation between intravesical pressure and flow, in both anesthetized and awake, nonrestrained mice. Using videocystometry, we identified localized bladder wall micromotions correlated with different states of the filling/voiding cycle, revealed an acute effect of TRPV1 channel activation on voiding efficiency, and pinpointed the effects of urethane anesthesia on urine storage and urethral flow. Videocystometry has broad applications, ranging from the elucidation of molecular mechanisms of bladder control to drug development for LUTd.
7

Pong, Yuan-Hung, Vincent F. S. Tsai, Yu-Hsuan Hsu, Chien-Hui Lee, Kun-Ching Wang, and Yu-Ting Tsai. "Application of a Deep Learning Neural Network for Voiding Dysfunction Diagnosis Using a Vibration Sensor." Applied Sciences 12, no. 14 (July 18, 2022): 7216. http://dx.doi.org/10.3390/app12147216.

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In a clinical context, there are increasing numbers of people with voiding dysfunction. To date, the methods of monitoring the voiding status of patients have included voiding diary records at home or urodynamic examinations at hospitals. The former is less objective and often contains missing data, while the latter lacks frequent measurements and is an invasive procedure. In light of these shortcomings, this study developed an innovative and contact-free technique that assists in clinical voiding dysfunction monitoring and diagnosis. Vibration signals during urination were first detected using an accelerometer and then converted into the mel-frequency cepstrum coefficient (MFCC). Lastly, an artificial intelligence model combined with uniform manifold approximation and projection (UMAP) dimensionality reduction was used to analyze and predict six common patterns of uroflowmetry to assist in diagnosing voiding dysfunction. The model was applied to the voiding database, which included data from 76 males aged 30 to 80 who required uroflowmetry for voiding symptoms. The resulting system accuracy (precision, recall, and f1-score) was around 98% for both the weighted average and macro average. This low-cost system is suitable for at-home urinary monitoring and facilitates the long-term uroflow monitoring of patients outside hospital checkups. From a disease treatment and monitoring perspective, this article also reviews other studies and applications of artificial intelligence-based methods for voiding dysfunction monitoring, thus providing helpful diagnostic information for physicians.
8

McGee, Alexis. "Toward a Black Rhetoric of Voicing." College Composition & Communication 75, no. 2 (December 1, 2023): 333–59. http://dx.doi.org/10.58680/ccc2023752333.

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This article argues for repositioning voice within BIPOC histories and contributions to the fields of English/rhetoric/composition studies. By reinvestigating the affordances and constraints of Expressivist-driven definitions of “voice” and the contemporary applications of imitation writing assignments, this article demonstrates alternative approaches to teaching and thinking through voice in writingbased courses.
9

Sharma, Utpal, Aparajita Gohain, Nabadip Borah, and Sanghamitra Nath. "VoiCon: a Matlab GUI-based tool for voice conversion applications." International Journal of Computer Applications in Technology 61, no. 3 (2019): 207. http://dx.doi.org/10.1504/ijcat.2019.10024328.

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Nath, Sanghamitra, Nabadip Borah, Aparajita Gohain, and Utpal Sharma. "VoiCon: a Matlab GUI-based tool for voice conversion applications." International Journal of Computer Applications in Technology 61, no. 3 (2019): 207. http://dx.doi.org/10.1504/ijcat.2019.102854.

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You might also be interested in the extended bibliographies on the topic 'Applications de Voisin' for particular source types:
Journal articles Dissertations / Theses

Dissertations / Theses on the topic "Applications de Voisin":

1

Voisin, Laplace Marie Sophie. "Conception d'architectures logicielles pour intégrer la qualité de service dans les applications multimédias répartiesMarie Sophie Voisin Laplacesous la direction de Franck Luthon." Pau, 2006. http://www.theses.fr/2006PAUU3019.

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Pour être utilisables, les applications multimédias doivent respecter des contraintes temporelles que le volume de leurs données rend problématique sur les réseaux actuels. De plus, elles sont caractérisées par l'importance de la perception qu'a l'utilisateur du service rendu si bien que leurs performances sont dépendantes des variations imprévisibles du contexte d'exécution. Dans ces conditions, nous proposons d'assurer à l'utilisateur d'applications multimédias réparties une qualité du service optimale grâce à l'adaptation dynamique de l'application à son contexte d'exécution, informatique et non informatique. Dans cette thèse, nous définissons une méthode de conception d'application et un support d'exécution permettant à un intergiciel réparti d'ajouter ou de supprimer des composants, de reconfigurer et de restructurer les assemblages de composants formant celle-ci. Pour cela, nous proposons un modèle d'application et un modèle de qualité de service ainsi que le modèle d'évaluation répartie associé. Puis nous définissons une heuristique de recherche de la meilleure configuration adaptée aux contraintes du multimédia de manière à répondre à ce problème NP-complet. Enfin, nous décrivons le simulateur qui nous a permis de valider nos travaux
In order to be used, distributed multimedia applications have to respect temporal constraints. This is particularly difficult on current networks because of the volume of data which they manipulate. Moreover, the importance of user perception of a provided service is one of the multimedia applications more important features. Their performance is then dependent on variations of the run-time context, which are not predictable. Thus, we would like to guarantee the user of a distributed multimedia application to benefit from an optimum quality of service in a given context, using a dynamic adaptation of the application to its run-time context (hardware, software, network and external environment). In this PhD thesis, we define a design method for the application and a support for its execution using a distributed middleware, which adds or removes components, reconfigures and restructures the set of components that compose the application. In order to do that, we propose an application and a quality of service model and an associated distributed evaluation model. Then we define an heuristics adapted to multimedia constraints in order to find the best configuration whereas this problem is NP-complete. Finally we describe the simulator that validates our works
2

Corlay, Sylvain. "Quelques aspects de la quantification optimale et applications à la finance." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00626445.

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Cette thèse est consacrée à l'étude de la quantification optimale et ses applications. Nous y abordons des aspects théoriques, algorithmiques et numériques. Elle comporte cinq chapitres. Dans la première partie, nous étudions liens entre la réduction de variance par stratification et la quantification optimale. Dans le cas ou la variable aléatoire considérée est un processus Gaussien, un schéma de simulation de complexité linéaire est développé pour la loi conditionnelle à une strate du processus en question. Le second chapitre est consacré à l'évaluation numérique de la base de Karhunen-Loève d'un processus Gaussien par la méthode de Nyström. Dans la troisième partie, nous proposons une nouvelle approche de la quantification de solutions d'EDS, dont nous étudions la convergence. Ces résultats conduisent à un nouveau schéma de cubature pour les solutions d'équations différentielles stochastiques, qui est développé dans le quatrième chapitre, et que nous éprouvons sur des problèmes de valorisation d'options. Dans le cinquième chapitre, nous présentons un nouvel algorithme de recherche rapide de plus proche voisin par arbre, basé sur la quantification de la loi empirique du nuage de points considéré.
3

Bai, Chenyu. "Hodge Theory, Algebraic Cycles of Hyper-Kähler Manifolds." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS081.

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Cette thèse est consacrée à l'étude des cycles algébriques dans les variétés hyper-Kähleriennes projectives et les variétés de Calabi-Yau strictes. Elle contribue à la compréhension des conjectures de Beauville et de Voisin sur les anneaux de Chow des variétés hyper-kählériennes projectives et des variétés de Calabi-Yau strictes. Elle étudie également certains invariants birationnels des variétés hyper-kählériennes projectives.La première partie de la thèse, parue dans Mathematische Zeitschrift [C. Bai, On Abel-Jacobi maps of Lagrangian families, Math. Z. 304, 34 (2023)] et présentée dans le chapitre 2, étudie si les sous-variétés lagrangiennes dans une variété hyper-kählérienne partageant la même classe cohomologique ont également la même classe de Chow. Nous étudions la notion de familles lagrangiennes et ses applications aux applications d'Abel-Jacobi associées. Nous adoptons une approche infinitésimale pour donner un critère de trivialité de l'application d'Abel-Jacobi d'une famille lagrangienne, et utilisons ce critère pour donner une réponse négative à la question précédente, ajoutant aux subtilités d'une conjecture de Voisin. Nous explorons également comment la maximalité de la variation des structures de Hodge sur la cohomologie de degré 1 de la famille lagrangienne implique la trivialité de l'application d'Abel-Jacobi. La deuxième partie de la thèse, à paraître dans International Mathematics Research Notices [C. Bai, On some birational invariants of hyper-Kähler manifolds, ArXiv: 2210.12455, to appear in International Mathematics Research Notices, 2024] et présentée dans le chapitre 3, étudie le degré d'irrationalité, la gonalité fibrante et le genre fibrant des variétés hyper-kählériennes projectives. Nous commençons par donner une légère amélioration d'un résultat de Voisin sur la borne inférieure du degré d'irrationalité des variétés hyper-kählériennes générales de Mumford-Tate. Nous étudions ensuite la relation entre les trois invariants birationnels susmentionnés pour les surfaces K3 projectives de nombre de Picard 1, rajoutant la compréhension sur une conjecture de Bastianelli, De Poi, Ein, Lazarsfeld, Ullery sur le comportement asymptotique du degré d'irrationalité des surfaces K3 projectives très générales. La troisième partie de la thèse, présentée dans le chapitre 4, étudie les applications de Voisin de dimension supérieure sur les variétés de Calabi-Yau strictes. Voisin a construit des applications auto-rationnelles de variétés de Calabi-Yau obtenues comme des variétés de r-plans dans des hypersurfaces cubiques de dimension adéquate. Cette application a été largement étudiée dans le cas r=1, qui est le cas de Beauville-Donagi. Dans les cas de dimensions supérieures, nous étudions d'abord l'action de l'application de Voisin sur les formes holomorphes. Nous démontrons ensuite la conjecture de Bloch généralisée pour l'action des applications de Voisin sur les groupes de Chow dans le cas de r=2. Enfin, via l'étude de l'application de Voisin, nous apportons des éléments de preuve à une conjecture de Voisin sur l'existence d'un 0-cycle spécial sur les variétés de Calabi-Yau strictes
This thesis is devoted to the study of algebraic cycles in projective hyper-Kähler manifolds and strict Calabi-Yau manifolds. It contributes to the understanding of Beauville's and Voisin's conjectures on the Chow rings of projective hyper-Kähler manifolds and strict Calabi-Yau manifolds. It also studies some birational invariants of projective hyper-Kähler manifolds.The first part of the thesis, appeared in Mathematische Zeitschrift [C. Bai, On Abel-Jacobi maps of Lagrangian families, Math. Z. 304, 34 (2023)] and presented in Chapter 2, studies whether the Lagrangian subvarieties in a hyper-Kähler manifold sharing the same cohomological class have the same Chow class as well. We study the notion of Lagrangian families and its associated Abel-Jacobi maps. We take an infinitesimal approach to give a criterion for the triviality of the Abel-Jacobi map of a Lagrangian family, and use this criterion to give a negative answer to the above question, adding to the subtleties of a conjecture of Voisin. We also explore how the maximality of the variation of the Hodge structures on the degree 1 cohomology the Lagrangian family implies the triviality of the Abel-Jacobi map. The second part of the thesis, to appear in International Mathematics Research Notices [C. Bai, On some birational invariants of hyper-Kähler manifolds, ArXiv: 2210.12455, to appear in International Mathematics Research Notices, 2024] and presented in Chapter 3, studies the degree of irrationality, the fibering gonality and the fibering genus of projective hyper-Kähler manifolds, with emphasis on the K3 surfaces case, en mettant l'accent sur le cas des surfaces K3. We first give a slight improvement of a result of Voisin on the lower bound of the degree of irrationality of Mumford-Tate general hyper-Kähler manifolds. We then study the relation of the above three birational invariants for projective K3 surfaces of Picard number 1, adding the understandinf of a conjecture of Bastianelli, De Poi, Ein, Lazarsfeld, Ullery on the asymptotic behavior of the degree of irrationality of very general projective K3 surfaces. The third part of the thesis, presented in Chapter 4, studies the higher dimensional Voisin maps on strict Calabi-Yau manifolds. Voisin constructed self-rational maps of Calabi-Yau manifolds obtained as varieties of r-planes in cubic hypersurfaces of adequate dimension. This map has been thoroughly studied in the case r=1, which is the Beauville-Donagi case. For higher dimensional cases, we first study the action of the Voisin map on the holomorphic forms. We then prove the generalized Bloch conjecture for the action of the Voisin maps on Chow groups for the case of r=2. Finally, via the study of the Voisin map, we provide evidence for a conjecture of Voisin on the existence of a special 0-cycle on strict Calabi-Yau manifolds
4

Geneste, Hervé. "Métallation assistée par groupement voisin et application à la synthèse de produits biologiquement actifs." Montpellier 2, 1996. http://www.theses.fr/1996MON20149.

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L'exemple de la 1,2,3,4-tetrahydroisoquinoleine illustre parfaitement l'effet de groupement voisin sur la metallation: le choix du groupe porte par l'atome d'azote du cycle sature conditionne la preference de l'une ou l'autre des deux positions benzyliques. La reaction du compose non substitue en position 2 avec deux equivalents de lic-kor a permis de mettre en lumiere un mecanisme de metallation - elimination. La metallation de 2-methyl-1,2,3,4-tetrahydroisoquinolein-4-ols a permis d'acceder aux composes substitues en position 5 avec des rendements acceptables a bons mais dans des conditions inhabituelles pour la metallation d'alcools benzyliques. La pargyline est connue pour sa grande efficacite dans l'inhibition de l'oxydase de monoamine. L'introduction par voie organometallique de substituants en position 4 sur son analogue 1,3-benzodioxolo, a augmente, contrairement a ce que l'on pouvait anticiper, cette activite. . . .
5

Kyrylenko, Anastasiia. "L’exportation des normes de propriété intellectuelle par l’UE vers les pays voisins de l’Europe de l’Est." Electronic Thesis or Diss., Strasbourg, 2022. http://www.theses.fr/2022STRAA008.

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Dans cette thèse, j'ai abordé les dispositions d'application des droits de propriété intellectuelle de trois accords d'association (AA), que l'Union européenne (UE) a conclus avec la Géorgie, la Moldavie et l'Ukraine au début des années 2010. J'ai puisé dans ces AA en tant que représentants de la politique extérieure souvent critiquée de l'UE en matière de propriété intellectuelle (PI), lancée en 2004, qui consiste à exporter les règles internes de l'UE en matière de propriété intellectuelle par le biais d'accords commerciaux. Cette analyse m'a permis d'aborder la question fondamentale de cette thèse : y a-t-il quelque chose de bon dans les accords commerciaux de l'UE ? La réponse claire, appuyée par cette thèse sur l'exemple des AA, est « oui ». L'enquête générale, qui a conduit à ces conclusions, était triple. Premièrement, j'ai analysé la politique générale de l'UE envers la Géorgie, la Moldavie et l'Ukraine concernant l'application des droits de propriété intellectuelle, ainsi que sa perception dans la littérature académique. Deuxièmement, après avoir retracé les critiques académiques existantes sur les accords commerciaux de l'UE, j'ai examiné si ces critiques étaient justifiées, telles qu'appliquées aux trois AA. Troisièmement, sur la base de cette analyse, j'ai identifié des problèmes supplémentaires auxquels les pays tiers pourraient être confrontés lors de la mise en oeuvre d'un accord commercial avec l'UE
In this thesis, I have addressed the IPR enforcement provisions of three Association Agreements (AAs), which the European Union (EU) concluded with Georgia, Moldova and Ukraine in the early 2010s. I drew on these AAs as representatives of the EU's often criticized external intellectual property (IP) policy, launched in 2004, which consists of exporting the EU's internal IP rules through trade agreements. Said analysis allowed me to approach the fundamental question of this thesis: is there something good with the EU trade agreements? The plain answer, supported by this thesis on the example of the AAs, is “yes”. The general investigation, which led to these conclusions, was threefold. First, I analyzed the general policy of the EU towards Georgia, Moldova and Ukraine regarding the enforcement of IPRs, as well as its perception in the academic literature. Second, after tracing existing academic criticism of the EU's trade agreements, I examined whether such criticism was justified, as applied to the three AAs. Third, based on this analysis, I identified additional problems that third countries might face when implementing a trade agreement with the EU
6

Czesnalowicz, Eric. "Applications de l'estimateur non paramétrique des K plus proches voisins en classification automatique multidimensionnelle." Lille 1, 1992. http://www.theses.fr/1992LIL10137.

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Le but de ce travail concerne la classification automatique de données par analyse de la fonction de densité de probabilité sous-jacente à la distribution des observations disponibles. Cette fonction de densité de probabilité est estimée par la méthode des k plus proches voisins. Toutefois, cette technique est très pénalisante au niveau des temps de calcul et un algorithme d'estimation rapide est proposé. Il est scindé en deux étapes distinctes, à savoir : l'ordonnancement des voisins puis l'estimation de la fonction de densité de probabilité proprement dite. Cette fonction estimée est ensuite soumise à un filtrage de type médian, à pondération binaire, qui permet de faire ressortir les noyaux des classes en présence. Après étiquetage itératif de ces noyaux, les observations sont assignées au noyau le plus proche. Une seconde approche proposée dans ce mémoire consiste non plus à détecter les noyaux des classes mais leurs contours. Pour cela un nouvel opérateur de détection de contours a été développé pour extraire les contours des classes. Après étiquetage itératif de ces contours, les observations sont assignées au contour le plus proche. L'application de ces procédures de classification sur des échantillons multidimensionnels met en évidence l'intérêt d'introduire les notions de voisinages de taille variable pour l'estimation, le filtrage et l'étiquetage des données multidimensionnelles
7

Taïleb, Mounira. "NOHIS-tree nouvelle méthode de recherche de plus proches voisins : application à la recherche d'images par le contenu." Paris 11, 2008. http://www.theses.fr/2008PA112164.

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Les tailles des bases d’images ont connu une croissance rapide. Elles peuvent se chiffrer actuellement en millions d’objets ce qui nécessite l’utilisation d’un système de recherche d’images par le contenu. Un tel système consiste tout d’abord en la description automatique des images de la base. Les propriétés visuelles de chaque image sont représentées sous forme de vecteurs multidimensionnels appelés descripteurs. Ensuite, trouver les images similaires à une image requête revient à chercher pour chaque descripteur de l’image requête les descripteurs les plus proches. Dans ce travail de thèse nous proposons une nouvelle méthode d’indexation de bases multidimensionnelles avec une évolution de l’algorithme de recherche de plus proches voisins. L’originalité de notre index multidimensionnel est la création de formes englobantes évitant le chevauchement. En effet, le chevauchement est l’un des principaux inconvénients qui ralentissent la recherche de plus proches voisins. Le nouvel index créé et son algorithme de recherche spécifique permettent d’accélérer la recherche de plus proches voisins tout en effectuant une recherche à l’exact. La méthode que nous avons conçue a été intégrée et évaluée dans un système réel de recherche d’images par le contenu. Les résultats des expérimentations effectuées montrent sa robustesse en termes de précision et de rapidité en temps de recherche
The increasing of image databases requires the use of a content-based image retrieval system (CBIR). A such system consist first to describe automatically the images, visual properties of each image are represented as multidimensional vectors called descriptors. Next, finding similar images to the query image is achieved by searching for the nearest neighbors of each descriptor of the query image. In this thesis, we propose a new method for indexing multidimensional bases with the search algorithm of nearest neighbors adapted. The originality of our multidimensional index is the disposition of the bounding forms avoiding overlapping. Indeed, the overlapping is one of the main drawbacks that slow the search of nearest neighbors search. Our index with its search algorithm speeds the nearest neighbors search while doing an exact search. Our method has been integrated and tested within a real content-based image system. The results of tests carried out show the robustness of our method in terms of accuracy and speed in search time
8

Bécot, François-Xavier. "Tyre noise over impedance surfaces : efficient application of the equivalent sources method." Lyon, INSA, 2003. http://theses.insa-lyon.fr/publication/2003ISAL0036/these.pdf.

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Le but de ce travail est de comprendre et de contrôler les mécanismes de rayonnement du pneumatique, ceci en concevant des outils de prédiction efficients pour la propagation du bruit pneumatique / chaussée au dessus de surfaces d'impédances arbitraires. Le rayonnement du pneumatique est modélisé à l'aide de la méthode des Sources Equivalentes. Un modèle d'effets de sol dus à un plan d'impédance donnée est développé pour des sources de directivités arbitraire. Par ailleurs, la solution exacte du problème bi-dimensionel est présentée. Basé sur les deux outils de prédiction précédents, un modèle itératif est développé pour le rayonnement d'un pneumatique au-dessus de surfaces d'impédance arbitraire. A l'aide de ce nouvel outil, un étude paramétrique examine les tendances du rayonnement du pneumatique au-dessus de chaussées absorbantes. Le présent travail contribue à l'étude des possibilités de réduction du bruit du trafic, notamment en utilisant des chaussées dites silencieuses
The aim of the present work is to understand and to control the mechanisms of the tyre radiation, by designing efficient prediction tools for the propagation of the tyre / road noise over arbitrary impedance surfaces. Tyre radiation is modelled using the Equivalent Sources method. A model for the ground effects induced from a given impedance plane is developed for sources having arbitrary directivity. Moreover, the exact solution to the two-dimensional problem is derived. Based on the two previous prediction tools, an iterative model is developed for the tyre radiation over an arbitrary impedance surface. Using this model, a parametrical study examines the tendencies of tyre radiation over absorbing surfaces. The present work allows to study the possibilities of traffic noise reduction, particularly by the use of so-called silent road surfaces
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Berrani, Sid-Ahmed. "Recherche approximative de plus proches voisins avec contrôle probabiliste de la précision ; application à la recherche d'images par le contenu." Phd thesis, Université Rennes 1, 2004. http://tel.archives-ouvertes.fr/tel-00532854.

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Cette thèse s'intéresse aux systèmes de recherche d'images par le contenu, où le but est de rechercher les images les plus similaires à une image requête fournie en exemple. Pour cela, il est d'abord nécessaire de décrire les images stockées dans la base. L'objectif est de traduire la similarité visuelle entre images en une simple notion de proximité spatiale entre descripteurs. Ainsi, pour retrouver les images similaires à l'image requête, il suffit de retrouver les descripteurs les plus proches du descripteur de l'image requête. Ce mode de recherche, appelé recherche de plus proches voisins, est cependant extrêmement coûteux même lorsque les techniques s'indexation multidimensionnelles sont utilisées. Les performances de celles-ci se dégradent exponentiellement lorsque la dimension des descripteurs augmente (phénomène de la malédiction de la dimension). Il s'avère toutefois que l'on peut fortement réduire le coût de ces recherches en effectuant des recherches approximatives. Le principe est alors de négocier une réduction du temps de réponse contre l'introduction d'imprécisions durant la recherche. Ce travail reprend ce principe et propose une nouvelle méthode de recherche approximative de plus proches voisins qui permet un contrôle fin et intuitif de la précision de la recherche. Ce contrôle s'exprime au travers d'un seul paramètre qui indique la probabilité maximale de ne pas trouver un des plus proches voisins recherchés. Dans le but d'évaluer rigoureusement ses performances dans le cadre d'un système réel, la méthode proposée a été ensuite intégrée dans un système de recherche d'images pour la détection de copies. Les expérimentations effectuées montrent que la méthode proposée est efficace, fiable et son imprécision n'a qu'un impact mineur sur la qualité des résultats finaux.
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Grison, Claude. "Généralisation de la réaction d'a-halogénation-carbonyloléfination et nouvelles applications en synthèse des acides dialkyl phosphono-2-alcanoïques et des acides voisins apparentés." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605605z.

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Books on the topic "Applications de Voisin":

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Donald, McRae. Part II Interpretation of Treaties, 10 Treaty Interpretation by the WTO Appellate Body: The Conundrum of Article 17(6) of the WTO Antidumping Agreement. Oxford University Press, 2011. http://dx.doi.org/10.1093/acprof:oso/9780199588916.003.0010.

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Article 17(6)(ii) of the WTO Antidumping Agreement provides that where a panel finds that a provision of the Agreement admits of two ‘permissible’ interpretations, then it must find that a measure of a state is in conformity with the Agreement if it rests on one of those ‘permissible’ interpretations. The application of this provision by the WTO Appellate Body has led to considerable controversy. By following the approach that it must first interpret the provision of the Antidumping Agreement in question before deciding whether there are two ‘permissible’ interpretations, the Appellate Body has routinely concluded that interpretation leads to a single meaning, rather than to two ‘permissible’ interpretations of that provision. A single meaning by definition rules out the possibility of two ‘permissible’ meanings. This chapter argues that this constitutes a failure of interpretative methodology by the Appellate Body, which has the effect of voiding Article 17(6)(ii) of any content. It suggests that, the Appellate Body should see the application of Article 17(6)(ii) as requiring it first to address specifically whether two ‘permissible’ interpretations of the provision in question exist, rather than first establishing a single meaning and then asking whether there are other ‘permissible’ meanings.

Book chapters on the topic "Applications de Voisin":

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Baghai-Ravary, Ladan, and Steve W. Beet. "VoiScan: Telephone Voice Analysis for Health and Biometric Applications." In Speech and Computer, 799–808. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66429-3_80.

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Chapple, C. R., and J. G. Malone-Lee. "A Study of the Validity of Voiding Pressure — Flow Plot Interpretation in Clinical Urodynamics." In Medical Applications of Microcomputers, 95–99. London: Springer London, 1988. http://dx.doi.org/10.1007/978-1-4471-1661-5_11.

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McCree, Alan V., and Thomas P. Barnwell. "A Mixed Excitation LPC Vocoder with Frequency-Dependent Voicing Strength." In Speech and Audio Coding for Wireless and Network Applications, 259–64. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3232-3_33.

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Ben Aloui, Nidhal, Hervé Glotin, and Patrick Hebrard. "Application of New Qualitative Voicing Time-Frequency Features for Speaker Recognition." In Advances in Biometrics, 1154–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-74549-5_120.

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Jarabo Amores, Pilar, Manuel Rosa Zurera, and Francisco López Ferreras. "Design of a Pre-processing Stage for a voiding the Dependence on TSNR of a Neural Radar Detector." In Bio-Inspired Applications of Connectionism, 652–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45723-2_79.

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Pérez, Efrén, and Margit Tavits. "Today Is Tomorrow." In Voicing Politics, 79–94. Princeton University Press, 2022. http://dx.doi.org/10.23943/princeton/9780691215143.003.0005.

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This chapter looks into language playing a crucial role in shaping people's time perspectives and their endorsement of policies with long time horizons. Variation across individuals' level of short-termism influences people's mass opinion about future-oriented policies and reasons behind voters' choices. The chapter also details the application of language–opinion hypothesis to political domains that are permeated with temporal implications. Thus, language can operate as a ceiling to dampen down what might otherwise be stronger public support for pro-environmental and other future-oriented policies. The chapter clarifies language differences alone does not affect why efforts to combat global change have not been more aggressive.
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D. Zivkovic, Vesna, Ivona Stankovic, Lidija Dimitrijevic, Hristina Colovic, Dragan Zlatanovic, and Natasa Savic. "Rehabilitation Protocols for Children with Dysfunctional Voiding." In Pelvic Floor Disorders [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98573.

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Dysfunctional voiding is a functional voiding disorder characterized by an intermittent uroflow rate due to involuntary intermittent contractions of the striated muscle of the external urethral sphincter or pelvic floor muscles (PFMs) during voiding in neurologically normal children. Symptoms include voiding difficulties as well as urgency, voiding frequency and, in some instances, urinary incontinence and/or nocturnal enuresis. Recurrent urinary tract infections, chronic constipation and/or fecal incontinence and vesicoureteral reflux (VUR) contribute to this condition. Urotherapy is the mainstay of the treatment. It starts with education and demystification and simple behavioral modifications. Specific measures include PFM exercises with various forms of biofeedback concentrating at the recognition of PFM function and their relaxation. However, the PFMs are part of the abdominal capsule and they act in coordination with lower abdominal muscles. These muscles need to be relaxed during voiding. Diaphragmatic breathing exercises were introduced to teach children abdominal muscle relaxation. Easy to learn exercises do not require any specific equipment and can be performed at all health care levels. Children from five years of age could benefit from these exercises. In children resistant to standard treatment, botulinum toxin type A application, intermittent catheterization and surgery in children with VUR are recommended.
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Govindarajan, M. "Approaches and Applications for Sentiment Analysis." In Data Mining Approaches for Big Data and Sentiment Analysis in Social Media, 1–23. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-8413-2.ch001.

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With the increasing penetration of the internet, an ever-growing number of people are voicing their opinions in the numerous blogs, tweets, forums, social networking, and consumer review websites. Each such opinion has a sentiment (positive, negative, or neutral) associated with it. But the problem is that the amount of data is simply overwhelming. Methods like supervised machine learning and lexical-based approaches are available for measuring sentiments that have a huge volume of opinionated data recorded in digital form for analysis. Sentiment analysis has been used in several applications including analysis of the repercussions of events in social networks, analysis of opinions about products and services. This chapter presents sentiment analysis applications and challenges with their approaches and tools. The techniques and applications discussed in this chapter will provide a clear-cut idea to the sentiment analysis researchers to carry out their work in this field.
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Rice, Keren. "Continuant Voicing in Slave (Northern Athapaskan): The Cyclic Application of Default Rules." In Theoretical Morphology, 371–88. BRILL, 1988. http://dx.doi.org/10.1163/9789004454101_024.

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Tereikovska, Liudmyla, and Ihor Tereikovskyi. "CONCEPTUAL PRINCIPLES OF NEURONETWORK RECOGNITION OF PHONEMES IN THE VOISE SIGNAL OF DISTANCE LEARNING SYSTEM MEMBERS." In Science, technology and innovation in the modern world. Publishing House “Baltija Publishing”, 2023. http://dx.doi.org/10.30525/978-9934-26-364-4-5.

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One of the most promising ways to improve the effectiveness of distance learning systems is the introduction of interactive educational materials based on the use of voice recognition tools. The introduction of known voice recognition tools into domestic distance learning systems is associated with significant financial costs and is complicated by the need for complex adaptation to the variability of application conditions, which explains the urgency of the task of developing models, methods and tools for recognizing voice signals adapted to the conditions of the distance learning system. The subject of the research are models, methods and means of neural network recognition of voice signals of members of the distance learning system. The purpose of the work is to develop the conceptual foundations of neural network recognition of phonemes in the voice signal of members of the distance learning system. The research methodology is based on the methods of digital signal processing, the theory of neural networks, the theory of voice recognition and involves the analysis of actual problems of recognizing members’ voice signals in the distance learning system, the analysis of modern neural network solutions in the field of voice recognition, the development of a conceptual model and the principles of effective application of neural networks for recognizing phonemes in the voice signal of distance learning system members. As a result of the conducted research, it was determined that the main functions of the module for recognizing the voice signals of members of the distance learning system are identification at the entrance, determination of the voice response in the process of computer testing, and determination of the voice command when using the services. It is substantiated that the functioning of such a module can be implemented on the basis of neural network means of phoneme recognition. At the same time, the conditions for the implementation of voice recognition tools are characterized by limitations on the development period, the involvement of labor resources, and restrictions on access to the audio recording databases necessary for the training of the neural network model, and lead to the need to forecast the load on the server of the distance learning system and take into account the requirements for the voice transmission channel signals, microphone, room acoustics, hardware and software. Inadequate adaptation of known neural network means of recognizing voice signals to the conditions of domestic distance learning systems has been proven. It is substantiated that effective recognition can be implemented on the basis of the neural network method of recognizing selected phonemes, which involves the implementation of basic procedures related to the selection of the type and parameters of the neural network model, adaptation of the learning method, effective coding of the initial parameters, formation of an effective training sample, and forecasting sufficient computing resources. A conceptual model of neural network recognition of phonemes in the voice signal of members of the distance learning system has been developed, which ensures the formalization of the process of building neural network tools for phoneme recognition. The principles of the use of neural networks for phoneme recognition have been formed, which should be used as a basis for creating models of the processes of using neural network means of phoneme recognition in the voice signal of members of the distance learning system. The proposed list of basic procedures for building effective neural network tools for phoneme recognition, the developed conceptual model of neural network recognition of phonemes in the voice signal of members of the distance learning system, and the formed principles of using neural networks for phoneme recognition form the conceptual foundations of neural network recognition of phonemes in the voice signal of members of the distance learning system.

Conference papers on the topic "Applications de Voisin":

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Montano, M., J. Garcia, W. Shi, M. T. Reiter, U. Vadakkan, K. L. Phillippe, B. Clark, et al. "Novel Process Techniques to Reduce Voids in Solder Thermal Interface Materials Used for Flip-Chip Package Applications." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72747.

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In the present study, the thermal performance of flip chip electronics packages was evaluated by characterizing the amount of voiding present in the Solder Thermal Interface Material (STIM) which is placed between the die and Integrated Heat Spreader (IHS). The study found that the thermal resistance, Rjc (resistance between the Si die and IHS), is dependent upon the amount of voiding present as well as the location of the voiding in the STIM. The study also described the techniques to reduce the STIM voids in flip chip packages and identified the key process parameters to improve the thermal performance. The process parameters varied in this study consisted of STIM thickness, dwell time and temperature, flux weight, and many others. A detailed DOE and statistical analysis were carried out to determine the impact of the parameters mentioned above toward reducing the quantity of voids in the STIM. The analysis showed that for the packages under consideration, the primary process parameters that affect the STIM voiding are cure time, flux weight and TIM thickness. This paper was also originally published as part of the Proceedings of the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems.
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Nurminen, Jani, Jilei Tian, and Victor Popa. "Voicing level control with application in voice conversion." In Interspeech 2007. ISCA: ISCA, 2007. http://dx.doi.org/10.21437/interspeech.2007-552.

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Nagarkar, Kaustubh, Tan Zhang, David Esler, David Simon, Paul Gillespie, Sandeep Tonapi, Prameela Susarla, and Ryan Mills. "Development of No Flow Underfills for Lead-Free Flip Chip Applications." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13420.

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Flip chip packaging is one of the fastest growing segments in electronics packaging technology. The semiconductor packaging industry is continuing to migrate towards Pb-free electronics assembly. Therefore, the development of compatible materials for Pb-free flip chip packaging is critical to this transition [1]. Flip chip devices are commonly underfilled to compensate for the mismatch in the Coefficient of Thermal Expansion (CTE) between the die and the chip carrier. The No Flow Underfill (NFU) process is a type that can increase the throughput of the flip chip assembly process and reduce manufacturing costs. Significant research has been performed to develop NFUs for eutectic applications. However, further research is required for the development of NFUs that are compatible with the Pb-free solders and the high temperature reflow process associated with these solders. In this paper, the challenges associated with the development of 'filled' underfill formulations for assembly with the 95.5Sn/3.8Ag/0.7Cu bumped flip chip devices are discussed. The effects of process variables that affect voiding in the underfill layer have been presented. The impact on voiding due to stencil printing of the underfill has been discussed. The impact on assembly reliability due to the underfill material properties has also been reported.
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Chun Ming Tsai, Yi Shiuan Huang, Ya Hui Lu, and Mingte Lin. "New gas applications of backside circuit edit for voiding spontaneous damage." In 2013 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA). IEEE, 2013. http://dx.doi.org/10.1109/ipfa.2013.6599202.

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Gong, Jie, and I. Charles Ume. "Void Inspection in Lead-Free Solder Bumps on Ball Grid Array (BGA) Packages Using Laser Ultrasound Technique." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63147.

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Solder joint voids are usually formed by the entrapped gas bubbles during the reflow process, and are common in all surface mount applications. It is a controversial issue on the reliability of the solder joint, however the consensus is that voiding is acceptable at low contents, while excessive voiding affects mechanical properties, and decreases strength, ductility and fatigue life of the interconnections. X-ray is the most widely used technique to evaluate the voids, including the size and occurrence frequency. In this paper, a laser ultrasound and interferometer inspection system is used to inspect the voids in lead-free solder bumps in ball grid array (BGA) packages. This system uses a pulsed Nd:YAG laser to induce ultrasound in the chip packages in the thermoelastic regime; and laser interferometer is used to measure the transient out-of-plane displacement response of the package surface to the laser irradiation. The quality of solder bumps is evaluated by analyzing the transient responses. In this work, voids were intentionally created by adding the volatile flux during the assembly process. By controlling the volume of flux dip, three different levels of voiding were proposed: void-free, relatively low and relatively high. The presence of voids in the solder bumps was first verified using 2-D X-ray techniques. Meanwhile, the built-in image-processing software in X-ray tool measured the void fraction to quantify the level of voiding. Then the laser ultrasound inspection system was used to evaluate the voids in these samples. By comparing the vibration responses from voided samples and void-free samples, it was found that the laser ultrasound inspection system is capable to differentiate samples with relatively high voiding from void-free samples while the relatively low voiding was below the resolution of the inspection system. Lastly, a further comparison between the void-free and voided solder bumps was carried out by the destructive cross-section technique. The comparisons between these three solder bump evaluation methods will be presented in this paper.
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Deschner, Theresa, Lukas Smirek, and Gottfried Zimmermann. "Self-Voicing Needs Individualisation - A Study on a Self-voicing Web Framework for the Support of Various Users with and without Reading Difficulties." In International Conference on Computer-Human Interaction Research and Applications. SCITEPRESS - Science and Technology Publications, 2017. http://dx.doi.org/10.5220/0006581401980205.

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Sadural, Ariel Jan V., and Laura Antoinette D. Clemente. "Voiding reduction and leadframe interactions in high-lead solder die attach for QFN applications." In 2017 International Conference on Electronics Packaging (ICEP). IEEE, 2017. http://dx.doi.org/10.23919/icep.2017.7939398.

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Percheron-Garcon, I., J. M. Bosc, C. Levade, M. Cabié, and G. Vanderschaeve. "Thermal Fatigue Induced Voiding in LDMOS Transistors Submitted to Multiple Energy Discharges." In ISTFA 2000. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.istfa2000p0255.

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Abstract The repetitive energy discharge test (power cycling) is an accelerated stress test (AST) that can be used to characterize the long-term behavior of power transistors taking into account stress on customer final application. This paper describes the application of this test to an LDMOS transistor in order to optimize both design and size while preserving final reliability of the product. We will detail this reliability characterization program, emphasizing the power cycling tests performed in extreme conditions in order to reach and study physical limit of LDMOS devices. Analysis of LDMOS devices under these extreme conditions indicated evidence of metal voiding: the conditions of formation of these thermal fatigue induced voids will be discussed. The effect of major parameters like power cycling energy, ambient temperature will also be discussed. Electrical characterization of stressed devices will be presented. Finally, the results of the Transmission Electron Microscopy characterization of the metal microstructure will be discussed.
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Ogbureke, Udochukwu, Joao Cabral, and Julie Berndsen. "Using multilayer perceptron for voicing strength estimation in HMM-based speech synthesis." In 2012 11th International Conference on Information Sciences, Signal Processing and their Applications (ISSPA). IEEE, 2012. http://dx.doi.org/10.1109/isspa.2012.6310640.

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Gonzalez-Nino, David, Lauren M. Boteler, Nicholas R. Jankowski, Dimeji Ibitayo, and Pedro O. Quintero. "Voiding Effects on the Thermal Response of Metallic Phase Change Materials Under Pulsed Power Loading." In ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2017 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ipack2017-74118.

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Metallic phase change materials (PCMs) have been demonstrated as an excellent alternative to act as a passive cooling system for pulse power applications. The possibility of integrating metallic PCMs, directly on top of a heat source, reducing the thermal resistance between the device and the cooling solution, could result in a significant improvement in thermal management for transient applications. However, the effectiveness of this method of implementation will depend on the quality of the interface between the metallic PCM and the heat source. For this work, a metallic PCM (49Bi/18Pb/12Sn/21In-Bi/Pb/Sn/In for simplicity) was placed directly on top of a device that has a layer of silicon nitride on the top. The device was pulsed with powers of 40W – 160W (84W/cm2 – 338W/cm2) with a 20 ms duration. After reaching the maximum power, the device was pulsed for a second cycle, and the temperature profiles were compared. Micrographical inspections, at the interlayer between the silicon nitride and metallic PCM, were performed before and after the pulses and compared. A maximum temperature of ≈20–25% higher was observed in the performance (at 80W) after pulse cycling. A visual inspection at the mating surfaces, between the metallic PCM and device, showed a clear difference between the contact surfaces before and after pulses. Significant voiding at the PCM interfacial layer was observed after cyclic loading which is believed to be the cause of the recorded increment in maximum temperature.

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