Journal articles: 'Ensemble vide'

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Petitimbert, Jean-Paul. "La valeur de la vide." Semiotika 15 (April 1, 2020): 12–36. http://dx.doi.org/10.15388/semiotika.2020.2.

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Cet article est consacré à l’étude sémiotique de la notion de vide et du sens qu’elle peut prendre en marketing, et plus particulièrement en communication comme en design de produits. Il s’appuie sur un exemple international originaire du Japon, celui de la marque MUJI.Le cadre méthodologique choisi pour cette analyse du discours non verbal tenu par une marque est le modèle interactionnel développé en socio-sémiotique par E. Landowski.L’étude s’efforce de rendre compte de l’efficacité stratégique attendue de l’indétermination sémantique délibérément affichée dans les campagnes publicitaires de la marque, là où l’on s’attendrait classiquement à des significations clairement articulées. Elle montre sur quelle base (à savoir la syntaxe de «l’ajustement») et avec quels effets les récepteurs sont invités à attribuer par eux-mêmes un sens aux très grands espaces vides apparaissant sur les affiches MUJI.Elle explique en outre comment une politique publicitaire aussi inhabituelle est devenue une philosophie de marque, et comment cette philosophie a été également appliquée au design des produits : le cœur de l’étude vise à montrer comment une «éthique de marque» et une «esthétique de marque» peuvent se manifester à la fois dans des signes bidimensionnels et tridimensionnels (c.-à-d. dans des affiches et dans des produits), et exploiter ensemble le même régime interactionnel de l’«ajustement».Enfin, l’étude se termine sur l’analyse de la structure énonciative mise en œuvre dans l’ensemble des productions de la marque. La dernière partie de l’article est ainsi consacrée aux différents types d’énonciataires construits par ces « textes » (publicités et produits), ainsi qu’à la notion de méta-choix, un concept proposé par Landowski, et comment cette nouvelle approche de la gestion de la marque remanie l’ensemble du paradigme marketing.

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Leard, Jean-Marcel. "Syntaxe et sémantique de quelques quantificateurs en franco-québécois." Canadian Journal of Linguistics/Revue canadienne de linguistique 30, no. 2 (1985): 126–57. http://dx.doi.org/10.1017/s0008413100010860.

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Nous voudrions examiner, dans son ensemble, le processus de grammémisation (Pottier 1974:68) ou passage du lexème au morphème grammatical en québécois. Il y a là un vide à combler, car le sujet n’a guère fait l’objet d’une étude large. Il convient cependant de signaler que, dans un champ lexical particulier, Thibault et Vincent (1981) ont déjà constaté le passage des lexèmes ayant un dénoté de caractère religieux et sacré au statut de sacres (jurons) puis de quantificateurs ou de modalisateurs (modalisateurs assertifs ou qualificatifs).

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Oprea, Denisa-Adriana. "Du féminisme (de la troisième vague) et du postmoderne." Articles 21, no. 2 (March 16, 2009): 5–28. http://dx.doi.org/10.7202/029439ar.

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Le présent article se veut une contribution d'ordre théorique. En premier lieu, il procède à une présentation du féminisme de la troisième vague, établit ses rapports avec le féminisme de la deuxième vague et met en valeur sa portée heuristique. En deuxième lieu, il propose une délimitation rigoureuse du champ postmoderne. Deux attitudes sont ainsi décelées, soit ici le postmoderne du vide et le postmoderne du décentrage. En troisième lieu, ce travail pense ensemble, dans leurs effets de sens communs et dans leurs différences, le postmoderne et le(s) féminisme(s), tout particulièrement le féminisme de la troisième vague.

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Peñafiel, Ricardo. "Le « printemps chilien » et la radicalisation de l’action collective contestataire en Amérique latine." Partie 3 – Le diagnostic de radicalité/radicalisation, no. 68 (March 12, 2013): 121–40. http://dx.doi.org/10.7202/1014808ar.

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Constatant l’intensification en Amérique latine de formes transgressives d’action collective et en s’appuyant sur une analyse du mouvement de protestation sociale surgi suite au conflit étudiant chilien de 2011, ce texte soutient que les conditions de possibilité de la radicalisation de l’action collective se situent dans la capacité d’une demande sectorielle à se transformer en symbole ou signifiant vide d’un ensemble hétérogène et inorganique. Cette « équivocité », généralement reprochée aux actions transgressives, est montrée ici comme le fondement autant que le résultat d’une convergence stratégique de positions divergentes permettant l’inscription ou l’apparition dans l’espace public de positions jusqu’alors absentes, exclues, bannies ou « invisibilisées ». Cette irruption « par effraction » de ceux qui étaient systématiquement exclus d’un système de représentation entraîne alors une remise en question des fondements mêmes de ce système plutôt que l’inscription dans ses règles constitutives.

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Babelhadj, Baaissa, Claude Guintard, Atika Benaissa, and Chantal Thorin. "Caractérisation biométrique du Chameau de la steppe (dromedarius Linné 1758) en Algérie." Revue d’élevage et de médecine vétérinaire des pays tropicaux 74, no. 1 (March 31, 2021): 37–42. http://dx.doi.org/10.19182/remvt.36326.

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Cette étude a été menée sur des dromadaires vivants algériens Naili encore appelés Chameaux de la steppe. L’objectif était de caractériser les mensurations et la barymétrie de cette population qui n’a pas encore été étudiée et de les comparer à deux autres populations algériennes, la Sahraoui et la Targui. L’échantillon comprenait 60 dromadaires, 30 mâles et 30 femelles adultes de plus de cinq ans qui pâturaient dans les régions semi-arides du nord de Biskra en Algérie. Cinq mensurations ont été faites, puis l’indice (de vide) sous-sternal et le poids vif ont été calculés. Les valeurs moyennes ont été respectivement chez les mâles et chez les femelles de 551,2 kg ± 58,7 kg et 482,6 kg ± 60,0 kg pour le poids vif, de 0,92 m ± 0,05 m et 0,83 m ± 0,08 m pour le vide sous-sternal, de 0,92 m ± 0,05 m et 0,88 m ± 0,04 m pour la profondeur thoracique, et de 1,02 ± 0,09 et 0,94 ± 0,11 pour l’indice sous-sternal. Une analyse multivariée a permis de séparer les mâles des femelles et de les comparer aux populations Sahraoui et Targui. Le Chameau de la steppe se différencie nettement de ces populations par sa plus petite taille. Cette étude montre également que les chamelles sont un peu plus petites et moins élancées que les mâles. Cette population rustique est associée à un ensemble de pratiques alimentaires, elles-mêmes liées à la qualité des parcours dont l’influence sur le développement morphologique des animaux a été largement décrite.

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Babelhadj, Baaissa, Atika Benaissa, Abdelkader Adamou, Faiza Tekkouk-Zemmouchi, Soumia Raache, Taqiyeddine Babelhadj, and Claude Guintard. "Approche morphozoométrique de chamelles (Camelus dromedarius, L.) des populations algériennes Sahraoui et Targui." Revue d’élevage et de médecine vétérinaire des pays tropicaux 70, no. 2 (December 11, 2017): 65. http://dx.doi.org/10.19182/remvt.31483.

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L’objectif de cette étude était de comparer les caractérisations morphologiques et de déterminer l’indice de gracilité d’après des mesures zoométriques sur des chamelles adultes de deux populations algériennes, la Sahraoui et la Targui. Les mesures ont été réalisées sur des dromadaires femelles – 30 Sahraoui et 30 Targui – de plus de cinq ans dans le Sahara septentrional (région de Ouargla). Quatre mensurations ont été faites, puis l’indice de gracilité et le poids vif ont été calculés. Des équations de régression linéaire ont été proposées afin d’estimer le poids vif des animaux et la hauteur au garrot à partir des mensurations corrélées. Les valeurs moyennes des poids vifs des Sahraoui et des Targui étaient respectivement de 399 ± 74 kg et de 428 ± 82 kg, pour une hauteur au garrot de 1,75 ± 0,08 m et de 1,81 ± 0,08 m. Elles étaient respectivement de 0,96 ± 0,05 m et 0,97 ± 0,08 m pour le vide sous-sternal, de 0,80 ± 0,08 et 0,84 ± 0,07 pour la profondeur thoracique, et de 1,20 ± 0,13 m et 1,18 ± 0,16 m pour l’indice de gracilité sous-sternal. Cette étude montre que la chamelle Targui est un peu plus gracile que la chamelle Sahraoui. Ces populations sont également associées à un ensemble de pratiques alimentaires, elles-mêmes liées à la qualité des parcours dont l’influence sur le développement morphologique des animaux a été largement observée.

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Ariole, Victor C. "Postcolonial Approach to Translation." Babel. Revue internationale de la traduction / International Journal of Translation 47, no. 3 (December 31, 2001): 248–57. http://dx.doi.org/10.1075/babel.47.3.05ari.

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Abstract Though African writers use foreign languages (English and French in particular) to mirror their society, these languages have been proved inadequate in conveying the message of the writers. Some writers have adapted the languages so much so that the original speakers found them difficult to understand. Translation has made the inadequacies very glaring. This article presents two African authors translated by Euro-centric translators and the critique on their translation proves that the target audience set is an empty set in their conception. At most, the plausible target audience set could be elements of European background. Hence a postcolonial translation that still fails to identify with a specific target audience. Résumé Bien que les écrivains africains font usage des langues étrangères (anglais et français) pour refléter leur société, ces langues restent inadéquates à véhiculer les fonds du message de ces écrivains. Il y a parmi eux ceux qui ont adapté ces langues à tel point que les Anglais ou Français les reconnaissent mal. La traduction a révélé davantage ces insuffisances. Cette présentation révèle le cas des deux auteurs traduits par des traducteurs euro-centriques et la critique de leur traduction fait preuve d’un ensemble vide au niveau des éléments de cible visée. A la rigueur, une cible européenne se voit contemplée. Ainsi, nous constatons une traduction post-coloniale parmi tant d’autres qui a du mal à viser une audience cible spécifique.

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Marcel, Jean-Christophe. "Les deux catégories cachées de La Doctrine de Durkheim." Durkheimian Studies 24, no. 1 (December 1, 2020): 121–32. http://dx.doi.org/10.3167/ds.2020.240109.

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*Full article is in FrenchFrench abstract: La Doctrine de Durkheim, texte écrit par Halbwachs en 1918, nous éclaire sur la filiation intellectuelle qui les relie l’un à l’autre. En effet, il met en évidence un intérêt qui va s’avérer durable dans l’oeuvre d’Halbwachs : la sociologie de la connaissance, dans la droite ligne de ce que Durkheim présente dans la conclusion des Formes élémentaires de la vie religieuse. Or si Halbwachs insiste sur la portée de l’oeuvre de Durkheim en matière de sociologie religieuse dans le domaine de la connaissance, c’est aussi le seul point sur lequel il se permet dans le texte d’adjoindre un développement personnel, preuve supplémentaire qu’il lui accorde de l’importance. Il est d’accord avec Durkheim pour affirmer que la connaissance consiste en un ensemble de classifications dont l’origine est sociale, et qu’ainsi la pensée conceptuelle répond au même besoin que la pensée capable déjà de classer, des primitifs, si bien qu’entre leur pensée logique et la nôtre, la différence n’est que de degrés et pas de nature. Il s’accorde aussi à dire, à la suite de Durkheim et Mauss, que l’évolution fait passer de classifications totémiques à des classifications spatiales, et à la pensée conceptuelle contemporaine, mais selon lui sans qu’on en sache beaucoup plus sur le passage du 2e au 3e stade de cette évolution. Aussi Halbwachs esquisse-t-il, en guise de complément, un élément de réponse pour combler ce vide, et, ce faisant, révèle une sensibilité qui annonce ses travaux futurs. Aux catégories de la pensée (espace, temps, causalité etc.) déjà étudiées par Durkheim, il ajoute celles de changement et d’individu, dont il va faire usage dans ses travaux ultérieurs pour expliquer ce mouvement de civilisation qu’est le passage des sociétés rurales aux sociétés urbaines.

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Valsecchi, Matteo, Natale Stucchi, and Lisa Scocchia. "Repulsive Serial Effects in Visual Numerosity Judgments." Perception 47, no. 7 (May 6, 2018): 780–88. http://dx.doi.org/10.1177/0301006618775235.

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We investigated how the approximate perceived numerosity of ensembles of visual elements is modulated by the numerosity of previously viewed ensembles depending on whether the first ensemble is held in visual working memory or not. We show that the numerosity of the previously seen ensemble has a repulsive effect, that is, a stimulus with high numerosity induces an underestimation of the following one and vice versa. This repulsive effect is present regardless of whether the first stimulus is memorized or not. While subtle changes of the experimental paradigm can have major consequences for the nature of interstimulus dependencies in perception, generally speaking the fact that we found such effects in a visual numerosity estimation task confirms that the process by which human observers produce estimates of the number of elements bears analogies to the processes that lead to the perception of visual dimensions such as orientation.

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Tan, Tse Guan, Jason Teo, Kim On Chin, and Patricia Anthony. "Pareto Ensembles for Evolutionary Synthesis of Neurocontrollers in a 2D Maze-Based Video Game." Applied Mechanics and Materials 284-287 (January 2013): 3173–77. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.3173.

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In this paper, we present a study of evolving artificial neural network controllers for autonomously playing maze-based video game. A system using multi-objective evolutionary algorithm is developed, which is called as Pareto Archived Evolution Strategy Neural Network (PAESNet), with the attempt to find a set of Pareto optimal solutions by simultaneously optimizing two conflicting objectives. The experiments are designed to address two research aims investigating: (1) evolving weights (including biases) of the connections between the neurons and structure of the network through multi-objective evolutionary algorithm in order to reduce its runtime operation and complexity, (2) improving the generalization ability of the networks by using neural network ensemble model. A comparative analysis between the single network model as the baseline system and the model built based on the neural ensemble are presented. The evidence from this study suggests that Pareto multi-objective paradigm and neural network ensembles can be effective for creating and controlling the behaviors of video game characters.

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Silvey, Brian A. "The Role of Conductor Facial Expression in Students’ Evaluation of Ensemble Expressivity." Journal of Research in Music Education 60, no. 4 (October 19, 2012): 419–29. http://dx.doi.org/10.1177/0022429412462580.

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The purpose of this study was to explore whether conductor facial expression affected the expressivity ratings assigned to music excerpts by high school band students. Three actors were videotaped while portraying approving, neutral, and disapproving facial expressions. Each video was duplicated twice and then synchronized with one of three professional wind ensemble recordings. Participants ( N = 133) viewed nine 1-min videos of varying facial expressions, actors, and excerpts and rated each ensemble’s expressivity on a 10-point rating scale. Results of a one-way repeated measures ANOVA indicated that conductor facial expression significantly affected ratings of ensemble expressivity ( p < .001, partial η2 = .15). Post hoc comparisons revealed that participants’ ensemble expressivity ratings were significantly higher for excerpts featuring approving facial expressions than for either neutral or disapproving expressions. Participants’ mean ratings were lowest for neutral facial expression excerpts, indicating that an absence of facial affect influenced evaluations of ensemble expressivity most negatively.

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Schuurmans, J. M., and M. F. P. Bierkens. "Ability to Forecast Regional Soil Moisture with a Distributed Hydrological Model Using ECMWF Rainfall Forecasts." Journal of Hydrometeorology 10, no. 2 (April 1, 2009): 544–54. http://dx.doi.org/10.1175/2008jhm1035.1.

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Abstract This study mimics an online forecast system to provide nine day-ahead forecasts of regional soil moisture. It uses modified ensemble rainfall forecasts from the numerical weather prediction model of the European Centre for Medium-Range Weather Forecasts (ECMWF), which is provided by the Royal Netherlands Meteorological Office (KNMI). Both the individual ensembles as well as the mean of the ensembles are used as input for a hydrological model of a 70-km2 study area during March–November 2006. The outcomes are compared to the model run with high-resolution rainfall fields (based on 14 rain gauges within the study area and meteorological radar) as input. It is shown that the total spatial mean rainfall is forecasted very well for all lead times. The measured rainfall (spatial mean) shows a distribution with peaks at 0–1 and >10 mm day−1. These peaks are underestimated by the ensemble mean of the forecasts and this underestimation increases with lead time. This is not the case when ensemble members are used. Besides, the modeled uncertainty in rainfall by ECMWF underestimates the true uncertainty for all lead times and the number of rainfall events (thresholds 0.1, 0.5, and 1.0 mm) is overestimated. Absolute temporal mean bias values in root zone storage—that is, soil moisture—larger than 1 mm start to show for lead times longer than 3 days. The lower and upper bounds of bias for a lead time of 9 days are approximately −4 and 7 mm, respectively (negative values mean the forecasted soil moisture is underestimated). The bias in root zone storage shows a spatial pattern that represents the spatial pattern of total rainfall: areas with less rainfall than spatial average show a negative bias and vice versa. Local differences within this spatial pattern are due to land use and soil type. The results suggest that ensemble forecasts of soil moisture using ensemble rainfall forecasts from ECMWF are of practical use for water management, even at regional scales.

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Martin, Shawn, Milosz A. Sielicki, Jaxon Gittinger, Matthew Letter, Warren L. Hunt, and Patricia J. Crossno. "VideoSwarm: Analyzing Video Ensembles." Electronic Imaging 2019, no. 1 (January 13, 2019): 685–1. http://dx.doi.org/10.2352/issn.2470-1173.2019.1.vda-685.

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Montemayor, Mark. "Evaluative and Behavioral Correlates to Intrarehearsal Achievement in High School Bands." Journal of Research in Music Education 62, no. 1 (March 20, 2014): 33–51. http://dx.doi.org/10.1177/0022429413520010.

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The purpose of this study was to investigate relationships of teaching effectiveness, ensemble performance quality, and selected rehearsal procedures to various measures of intrarehearsal achievement (i.e., musical improvement exhibited by an ensemble during the course of a single rehearsal). Twenty-nine high school bands were observed in two rehearsals of a common music selection. Separate panels of experts evaluated ensemble performance quality from audio recordings and teacher effectiveness from video recordings. Rehearsal frames were identified in second-day rehearsals, and “before” and “after” rehearsal trials for each target ( N = 404) were extracted and evaluated for achievement. Selected rehearsal procedures within each frame also were measured. Results indicated no significant relationships between rehearsal effectiveness scores and any of five conceptualizations of intrarehearsal achievement. Significant, positive correlations were found between performance quality and three achievement computations, and between performance quality and rehearsal effectiveness. With one exception, none of the selected rehearsal procedures were associated with achievement differences within rehearsal frames. These findings suggest limitations of considering ensemble teacher evaluation in terms of student achievement. An ensemble’s extant skill level may contribute more to short-term rehearsal achievement than does the quality of its conductor’s rehearsing.

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Zheng, Jiewan, Xianbin Cao, Baochang Zhang, Xiantong Zhen, and Xiangbo Su. "Deep Ensemble Machine for Video Classification." IEEE Transactions on Neural Networks and Learning Systems 30, no. 2 (February 2019): 553–65. http://dx.doi.org/10.1109/tnnls.2018.2844464.

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Price, Harry E. "Relationships among Conducting Quality, Ensemble Performance Quality, and State Festival Ratings." Journal of Research in Music Education 54, no. 3 (October 2006): 203–14. http://dx.doi.org/10.1177/002242940605400304.

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This study was the third in a series examining the relationships among conductors, ensembles' performances, and festival ratings. Participants (N = 51) were asked to score the quality of video-only conducting and parallel audio-only excerpts of performances at a state-level concert festival of nine bands, three each that had received ratings of Superior (I), Excellent (II), or Good (III). There was no significant difference among scores for conducting across festival ratings; however, there were significant differences among ensemble performance scores, with bands receiving Superior ratings scoring higher than those receiving ratings of Excellent or Good. No relationship was found between scores given conductors and their respective ensembles' performances. Participants were also asked to give reasons (N = 1, 393) for the scores. The comments were used to develop emergent themes based on what participants attended to, and trends were found regarding aspects of conducting and performances that had positive or negative influences.

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Puzyrev, Dmitry, Kirsten Harth, Torsten Trittel, and Ralf Stannarius. "Machine Learning for 3D Particle Tracking in Granular Gases." Microgravity Science and Technology 32, no. 5 (July 18, 2020): 897–906. http://dx.doi.org/10.1007/s12217-020-09800-4.

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Abstract Dilute ensembles of granular matter (so-called granular gases) are nonlinear systems which exhibit fascinating dynamical behavior far from equilibrium, including non-Gaussian distributions of velocities and rotational velocities, clustering, and violation of energy equipartition. In order to understand their dynamic properties, microgravity experiments were performed in suborbital flights and drop tower experiments. Up to now, the experimental images were evaluated mostly manually. Here, we introduce an approach for automatic 3D tracking of positions and orientations of rod-like particles in a dilute ensemble, based on two-view video data analysis. A two-dimensional (2D) localization of particles is performed using a Mask R-CNN neural network trained on a custom data set. The problem of 3D matching of the particles is solved by minimization of the total reprojection error, and finally, particle trajectories are tracked so that ensemble statistics are extracted. Depending on the required accuracy, the software can work fully self-sustainingly or serve as a base for subsequent manual corrections. The approach can be extended to other 3D and 2D particle tracking problems.

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Ray, James, and Karin S. Hendricks. "Collective Efficacy Belief, Within-Group Agreement, and Performance Quality Among Instrumental Chamber Ensembles." Journal of Research in Music Education 66, no. 4 (October 19, 2018): 449–64. http://dx.doi.org/10.1177/0022429418805090.

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We examined collective efficacy beliefs, including levels of within-group agreement and correlation with performance quality, of instrumental chamber ensembles (70 musicians, representing 18 ensembles). Participants were drawn from collegiate programs and intensive summer music festivals located in the northwestern and western regions of the United States. Individuals completed a five-item survey gauging confidence in their group’s performance abilities; each ensemble’s aggregated results represented its collective efficacy score. Ensembles provided a video-recorded performance excerpt that was rated by a panel of four string specialists. Analyses revealed moderately strong levels of collective efficacy belief and uniformly high within-group agreement. There was a significant, moderately strong correlation between collective efficacy belief and within-group agreement ( rs = .67, p < .01). We found no relationship between collective efficacy belief and performance quality across the total sample, but those factors correlated significantly for festival-based ensembles ( rs = .82, p < .05). Reliability estimates suggest that our collective efficacy survey may be suitable for use with string chamber ensembles. Correlational findings provide partial support for the theorized link between efficacy belief and performance quality in chamber music settings, suggesting the importance for music educators to ensure that positive efficacy beliefs become well founded through quality instruction.

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Augé, Jean-Louis. "Un ensemble exceptionnel: le cycle de la Vie de la Vierge d'Alonso Cano au Musée Goya de Castres." Archivo Español de Arte 74, no. 296 (December 30, 2001): 425–34. http://dx.doi.org/10.3989/aearte.2001.v74.i296.372.

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Ahmed A. M. Hamed, Zhang Xiaoming, Cheng Xu, and Renfa Li. "Video Genre Classification Using Support Vector Machine Ensemble." International Journal of Digital Content Technology and its Applications 6, no. 15 (August 31, 2012): 191–200. http://dx.doi.org/10.4156/jdcta.vol6.issue15.23.

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Baughman, Melissa, and Christopher M. Baumgartner. "Preservice teachers’ experiences teaching an adult community music ensemble." International Journal of Music Education 36, no. 4 (June 18, 2018): 601–15. http://dx.doi.org/10.1177/0255761418775128.

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The purpose of this study was to investigate the experiences of four preservice music teachers as leaders of adult chamber ensembles. Through examination of these teachers’ reflections, we sought to answer the following questions: (a) What impact does leading an adult chamber ensemble have on preservice teachers’ perceptions of their instructional behaviors? (b) Which specific instructional behaviors do preservice teachers focus upon when teaching adult learners? (c) How might preservice teachers project their experience teaching adult learners in a community music program to future experiences teaching in formal school settings? Four undergraduate music education majors at a large Midwestern university school of music in the USA participated in this study. Each participant served as a staff member for the university-sponsored New Horizons Band, teaching a weekly, 30-minute small ensemble rehearsal for eight consecutive weeks. Participant responses were examined four ways: (a) responses to a pre-questionnaire, (b) video diary entries, (c) interview transcript, and (d) responses to a post-questionnaire. Preservice teachers’ credited their experiences leading New Horizons chamber groups for their perceived development and mastery of specific instructional behaviors. Implications for music education include the need to engage preservice teachers’ in authentic teaching experiences, promoting transfer to future instructional settings.

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Price, Harry E., and E. Christina Chang. "Conductor and Ensemble Performance Expressivity and State Festival Ratings." Journal of Research in Music Education 53, no. 1 (April 2005): 66–77. http://dx.doi.org/10.1177/002242940505300106.

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This study is the second in a series examining the relationship between conducting and ensemble performance. The purpose was to further examine the associations among conductor, ensemble performance expressivity, and festival ratings. Participants were asked to rate the expressivity of video-only conducting and parallel audio-only excerpts from a state-level concert festival. There were significant differences among scores for conducting across festival ratings; however, there were no significant differences for ensemble performances. There was a significant interaction between festival ratings and video and audio excerpts. The relationship between expressivity of conducting and expressivity of ensemble performances found in some previous research was not found in this study; indeed, there was not even a relationship found in expressivity of ensemble performance to festival ratings. The lack of an apparent relationship of expressive conducting to expressive performance found here replicates, in part, the results of Price and Chang (2001). September 10, 2004 February 2, 2005.

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Robinson, Charles R., Melita J. Belgrave, and Daniel J. Keown. "Effects of Disability Type, Task Complexity, and Biased Statements on Undergraduate Music Majors’ Inclusion Decisions for Performance Ensembles." Journal of Music Teacher Education 28, no. 2 (November 21, 2018): 70–83. http://dx.doi.org/10.1177/1057083718811396.

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We examined decisions to include or exclude adolescent students in music performance ensembles as influenced by disability, task complexity, and biased information statements. Undergraduate music majors ( N = 104) viewed video recordings presenting varied student profiles that included two disability types, two task complexity levels, and contrasting informational statements. Participants responded to “I would include this student” statements across an agree-disagree continuum using a Continuous Response Digital Interface device, and explained their decision in an exit survey. We found a significant effect for student profile on inclusion decisions, and also confirmed that the biased information statement presented last influenced these decisions, regardless of disability or task complexity. Participants reported that inclusion decisions were based on their perception of the student’s ability, whether the student would experience ensemble success, and on their self-confidence in accommodating the student. Findings provide insight into music majors’ inclusion decision processes and support using simulation procedures in music education college courses.

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MOOREFIELD, VIRGIL, and JEFFREY WEETER. "The Lucid Dream Ensemble: a laboratory of discovery in the age of convergence." Organised Sound 9, no. 3 (December 2004): 271–81. http://dx.doi.org/10.1017/s1355771804000469.

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This paper describes the formation, creations and performances of a digital arts performing ensemble. It considers issues of collaboration across media, especially in the context of composed audio-visual improvisation (comprovisation). By contextualising our creative work within the wider discourse of both the practice and aesthetics of contemporary intermedia, we seek to enhance the potential relevancy of the article's main focus to readers.The story of the Lucid Dream Ensemble is one of contemporary creative activity in the realm of digital arts. It exists in a university setting, and its purpose is educational as well as artistic. Founded at Northwestern University in Evanston, Illinois in 2002, the ensemble seeks to foster collaboration across auditory and visual boundaries. The group is made up of audio-visual performers who control laptop computers in real-time by various interactive means. Its canvas is a surround-sound set-up, as well as three projectors. The ensemble seeks a true integration of video and audio, as expressed in the creation of audio-visual artefacts aimed at providing an immersive experience. The group has progressed from presenting unrelated audio and video, to integrating the process of creation of sound and image, to collecting audio and video as a group and processing them collaboratively.

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Prathosh, A. P., Pragathi Praveena, Lalit K. Mestha, and Sanjay Bharadwaj. "Estimation of Respiratory Pattern From Video Using Selective Ensemble Aggregation." IEEE Transactions on Signal Processing 65, no. 11 (June 1, 2017): 2902–16. http://dx.doi.org/10.1109/tsp.2017.2664048.

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Liu, Ning, Hefeng Wu, and Liang Lin. "Hierarchical Ensemble of Background Models for PTZ-Based Video Surveillance." IEEE Transactions on Cybernetics 45, no. 1 (January 2015): 89–102. http://dx.doi.org/10.1109/tcyb.2014.2320493.

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O’Regan, Tom. "Remembering Video." Television & New Media 13, no. 5 (April 24, 2012): 383–98. http://dx.doi.org/10.1177/1527476412443090.

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Informal cultural markets are not new. Nor are “pirate” video and software markets as different from formal markets as supposed. They are also markets governed by pricing, providing opportunities for leverage by market participants at the expense of each other. Pirate markets are a variant of a cultural market in which returns for sellers and costs to buyers factor in limited to no formal returns to content owners. Furthermore, in large parts of the world, such informal arrangements facilitate cultural, social, and market participation. This article remembers the disruptions that accompanied the VCR’s introduction to identify longstanding pathways of market formation to which the VCR and our current “digital” ensemble of DVD and downloads conform; and those features common to these and other media technologies which lend themselves to diverse production, distribution, and consumption arrangements globally.

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Mahmood, Amjad, Tianrui Li, Yan Yang, Hongjun Wang, and Mehtab Afzal. "Semi-supervised evolutionary ensembles for Web video categorization." Knowledge-Based Systems 76 (March 2015): 53–66. http://dx.doi.org/10.1016/j.knosys.2014.11.030.

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Ong, Eng-Jon, Syed Sameed Husain, Mikel Bober-Irizar, and Miroslaw Bober. "Deep Architectures and Ensembles for Semantic Video Classification." IEEE Transactions on Circuits and Systems for Video Technology 29, no. 12 (December 2019): 3568–82. http://dx.doi.org/10.1109/tcsvt.2018.2881842.

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Chandrasekaran, Jeyamala, and S. J. Thiruvengadam. "Ensemble of Chaotic and Naive Approaches for Performance Enhancement in Video Encryption." Scientific World Journal 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/458272.

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Owing to the growth of high performance network technologies, multimedia applications over the Internet are increasing exponentially. Applications like video conferencing, video-on-demand, and pay-per-view depend upon encryption algorithms for providing confidentiality. Video communication is characterized by distinct features such as large volume, high redundancy between adjacent frames, video codec compliance, syntax compliance, and application specific requirements. Naive approaches for video encryption encrypt the entire video stream with conventional text based cryptographic algorithms. Although naive approaches are the most secure for video encryption, the computational cost associated with them is very high. This research work aims at enhancing the speed of naive approaches through chaos based S-box design. Chaotic equations are popularly known for randomness, extreme sensitivity to initial conditions, and ergodicity. The proposed methodology employs two-dimensional discrete Henon map for (i) generation of dynamic and key-dependent S-box that could be integrated with symmetric algorithms like Blowfish and Data Encryption Standard (DES) and (ii) generation of one-time keys for simple substitution ciphers. The proposed design is tested for randomness, nonlinearity, avalanche effect, bit independence criterion, and key sensitivity. Experimental results confirm that chaos based S-box design and key generation significantly reduce the computational cost of video encryption with no compromise in security.

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Meals, Cory D., Steven J. Morrison, and Deborah A. Confredo. "The Effects of Temporal Action-Sound Congruence on Evaluations of Conductor Quality." Music & Science 2 (January 1, 2019): 205920431989196. http://dx.doi.org/10.1177/2059204319891968.

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Vision serves a fundamental role in the human experience of musical performance. In conducting, this particular heuristic influences both expressive and coordinative aspects of musical activity. Ensemble conductors present a special case of musical gesture, as their activities are coordinative rather than directly sound-producing. While the influence of vision on evaluations of musical expressivity has been well studied, less attention has been paid to the temporal aspect of conductors’ gestures. Given anecdotal observations of a flexibly congruent relationship between conductor gesture and ensemble response and the ability of entrainment to promote preference, we theorize that alterations to natural action-sound congruence in conductor-to-ensemble settings may influence evaluations of conductor quality. Naturalistic performance video of five conductors was left intact or adjusted to an audio- or video-lead condition by a percentage of each excerpt tempo (intact, ±15%, ±30%) and fully crossed into stimuli orders. Participants were asked to rate the quality of the conductor, the ensemble, and the performance overall using a Likert-type scale bound by “ poor” and “ excellent.” Our results indicate that any offset, whether audio- or video-led, resulted in a lower level of conductor quality than intact, unaltered performance. While our effect size was small (η p2 = .02), participant ratings reinforce the role of action-sound congruence on observers’ perceptions and overall evaluation of conductors’ activities.

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Nomiya, Hiroki, Atsushi Morikuni, and Teruhisa Hochin. "An Emotional Scene Retrieval Framework for Lifelog Videos Using Ensemble Clustering." International Journal of Software Innovation 3, no. 3 (July 2015): 1–13. http://dx.doi.org/10.4018/ijsi.2015070101.

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A lifelog video retrieval framework is proposed for the better utilization of a large amount of lifelog video data. The proposed method retrieves emotional scenes such as the scenes in which a person in the video is smiling, considering that a certain important event could happen in most of emotional scenes. The emotional scene is detected on the basis of facial expression recognition using a wide variety of facial features. The authors adopt an unsupervised learning approach called ensemble clustering in order to recognize the facial expressions because supervised learning approaches require sufficient training data, which make it quite troublesome to apply to large-scale video databases. The retrieval performance of the proposed method is evaluated by means of an emotional scene detection experiment from the viewpoints of accuracy and efficiency. In addition, a prototype retrieval system is implemented based on the proposed emotional scene detection method.

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Silvey, Brian A. "The Effect of Ensemble Performance Quality on the Evaluation of Conducting Expressivity." Journal of Research in Music Education 59, no. 2 (June 9, 2011): 162–73. http://dx.doi.org/10.1177/0022429411406173.

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This study was designed to examine whether the presence of excellent or poor ensemble performances would influence the ratings assigned by ensemble members to conductors who demonstrated highly expressive conducting. Two conductors were videotaped conducting one of two excerpts from an arrangement of Frank Ticheli’s Loch Lomond. These videos subsequently were duplicated and synchronized with either excellent or poor performances that previously had been recorded with a university wind ensemble. To determine whether identical conducting performances would be evaluated differently on the basis of excellent or poor ensemble performance, college band, choir, and orchestra members ( N = 120) viewed each of the four 1-minute excerpts and rated conductor expressivity and ensemble performance quality on 10-point Likert-type scales and provided one brief written comment about each video. Results indicated that ensemble performance quality significantly affected ratings of conductor expressivity ( p < .001). However, the effect size was modest (partial η2 = .29). Participants’ written comments were directed most frequently to the conductor in the excellent-performance condition and to the ensemble in the poor-performance condition.

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Morrison, Steven J., Harry E. Price, Carla G. Geiger, and Rachel A. Cornacchio. "The Effect of Conductor Expressivity on Ensemble Performance Evaluation." Journal of Research in Music Education 57, no. 1 (April 2009): 37–49. http://dx.doi.org/10.1177/0022429409332679.

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In this study, the authors examined whether a conductor's use of high-expressivity or low-expressivity techniques affected evaluations of ensemble performances that were identical across conducting conditions. Two conductors each conducted two 1-minute parallel excerpts from Percy Grainger's Walking Tune. Each directed one excerpt using high- and one using low-expressivity techniques. After watching a video of the four conducting segments set to a single audio performance of the selection by a university wind ensemble, participants ( N = 118) evaluated ensemble expressivity using a 10-point Likert-type scale. Half of the participants also rated the expressivity of the conductor using a second identical scale. Ensemble expressivity was rated significantly higher for the high-expressivity conductors; effect size was strong (partial η 2 = .57). Among participants evaluating both conductor and ensemble, there was a significant moderate correlation between ratings ( r = .56).

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Kim, Yong-Woon, Yung-Cheol Byun, and Addapalli V. N. Krishna. "Portrait Segmentation Using Ensemble of Heterogeneous Deep-Learning Models." Entropy 23, no. 2 (February 5, 2021): 197. http://dx.doi.org/10.3390/e23020197.

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Image segmentation plays a central role in a broad range of applications, such as medical image analysis, autonomous vehicles, video surveillance and augmented reality. Portrait segmentation, which is a subset of semantic image segmentation, is widely used as a preprocessing step in multiple applications such as security systems, entertainment applications, video conferences, etc. A substantial amount of deep learning-based portrait segmentation approaches have been developed, since the performance and accuracy of semantic image segmentation have improved significantly due to the recent introduction of deep learning technology. However, these approaches are limited to a single portrait segmentation model. In this paper, we propose a novel approach using an ensemble method by combining multiple heterogeneous deep-learning based portrait segmentation models to improve the segmentation performance. The Two-Models ensemble and Three-Models ensemble, using a simple soft voting method and weighted soft voting method, were experimented. Intersection over Union (IoU) metric, IoU standard deviation and false prediction rate were used to evaluate the performance. Cost efficiency was calculated to analyze the efficiency of segmentation. The experiment results show that the proposed ensemble approach can perform with higher accuracy and lower errors than single deep-learning-based portrait segmentation models. The results also show that the ensemble of deep-learning models typically increases the use of memory and computing power, although it also shows that the ensemble of deep-learning models can perform more efficiently than a single model with higher accuracy using less memory and less computing power.

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Ding, Changxing, and Dacheng Tao. "Trunk-Branch Ensemble Convolutional Neural Networks for Video-Based Face Recognition." IEEE Transactions on Pattern Analysis and Machine Intelligence 40, no. 4 (April 1, 2018): 1002–14. http://dx.doi.org/10.1109/tpami.2017.2700390.

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Sun, Ning, Yuze Shan, Feng Jiang, Guang Han, and Xiaofei Li. "An Ensemble Framework for Object Detection in Intelligent Video Surveillance System." International Journal of Control and Automation 9, no. 2 (February 28, 2016): 239–48. http://dx.doi.org/10.14257/ijca.2016.9.2.23.

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Mekthanavanh, Vinath, Tianrui Li, Jie Hu, and Yan Yang. "Social web video clustering based on multi-modal and clustering ensemble." Neurocomputing 366 (November 2019): 234–47. http://dx.doi.org/10.1016/j.neucom.2019.07.097.

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Toyosawa Sakihama, Eiji, Yasukazu Kawasaki, and Eiji Motohashi. "Contribution Analysis of Video Advertising with Topic Model and Ensemble Learning." Transactions of the Japanese Society for Artificial Intelligence 36, no. 3 (May 1, 2021): B—K91_1–8. http://dx.doi.org/10.1527/tjsai.36-3_b-k91.

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Pouyanfar, Samira, and Shu-Ching Chen. "Automatic Video Event Detection for Imbalance Data Using Enhanced Ensemble Deep Learning." International Journal of Semantic Computing 11, no. 01 (March 2017): 85–109. http://dx.doi.org/10.1142/s1793351x17400050.

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With the explosion of multimedia data, semantic event detection from videos has become a demanding and challenging topic. In addition, when the data has a skewed data distribution, interesting event detection also needs to address the data imbalance problem. The recent proliferation of deep learning has made it an essential part of many Artificial Intelligence (AI) systems. Till now, various deep learning architectures have been proposed for numerous applications such as Natural Language Processing (NLP) and image processing. Nonetheless, it is still impracticable for a single model to work well for different applications. Hence, in this paper, a new ensemble deep learning framework is proposed which can be utilized in various scenarios and datasets. The proposed framework is able to handle the over-fitting issue as well as the information losses caused by single models. Moreover, it alleviates the imbalanced data problem in real-world multimedia data. The whole framework includes a suite of deep learning feature extractors integrated with an enhanced ensemble algorithm based on the performance metrics for the imbalanced data. The Support Vector Machine (SVM) classifier is utilized as the last layer of each deep learning component and also as the weak learners in the ensemble module. The framework is evaluated on two large-scale and imbalanced video datasets (namely, disaster and TRECVID). The extensive experimental results illustrate the advantage and effectiveness of the proposed framework. It also demonstrates that the proposed framework outperforms several well-known deep learning methods, as well as the conventional features integrated with different classifiers.

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He, Wen Hua, Zhi Jing Liu, and Jian Ming Qu. "Confidence Based Hierarchical Online Ensemble Visual Tracking." Advanced Materials Research 945-949 (June 2014): 1794–800. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.1794.

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In order to adapt to the target appearance changes during visual tracking, feature model needs to be updated by online learning. However, online adaptive methods suffer from the drifting problem: error data are used for updating and will finally lead to tracking failure. In this paper, we propose a novel hierarchical online ensemble tracking method. Optical flow tracker is employed to predict the rough location. Online learning classifier is employed to detect the target. Template match is used to filter the data for updating. All these parts are combined together hierarchically by their confidence to ensure the stability of online learning and tracking. In contrast to the individual online learning and semi-supervised online learning, our method show more adaptability and stability. We demonstrate the performance on several public video sequences, which shows the improvement of our method over other online tracking approaches.

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Park, S. K., S. Lim, and M. Zupanski. "Structure of forecast error covariance in coupled atmosphere–chemistry data assimilation." Geoscientific Model Development 8, no. 5 (May 5, 2015): 1315–20. http://dx.doi.org/10.5194/gmd-8-1315-2015.

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Abstract. In this study, we examined the structure of an ensemble-based coupled atmosphere–chemistry forecast error covariance. The Weather Research and Forecasting (WRF) model coupled with Chemistry (WRF-Chem), a coupled atmosphere–chemistry model, was used to create an ensemble error covariance. The control variable includes both the dynamical and chemistry model variables. A synthetic single observation experiment was designed in order to evaluate the cross-variable components of a coupled error covariance. The results indicate that the coupled error covariance has important cross-variable components that allow a physically meaningful adjustment of all control variables. The additional benefit of the coupled error covariance is that a cross-component impact is allowed; e.g., atmospheric observations can exert an impact on chemistry analysis, and vice versa. Given the realistic structure of ensemble forecast error covariance produced by the WRF-Chem, we anticipate that the ensemble-based coupled atmosphere–chemistry data assimilation will respond similarly to assimilation of real observations.

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Park, S. K., S. Lim, and M. Zupanski. "Forecast error covariance structure in coupled atmosphere–chemistry data assimilation." Geoscientific Model Development Discussions 7, no. 6 (December 10, 2014): 8757–67. http://dx.doi.org/10.5194/gmdd-7-8757-2014.

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Abstract. In this study, we examined the structure of an ensemble-based coupled atmosphere–chemistry forecast error covariance. The Weather Research and Forecasting (WRF) model coupled with Chemistry (WRF-Chem), a coupled atmosphere–chemistry model, was used to create an ensemble error covariance. The control variable includes both the dynamical and chemistry model variables. A synthetic single observation experiment was designed in order to evaluate the cross-variable components of a coupled error covariance. The results indicate that the coupled error covariance has important cross-variable components that allow a physically meaningful adjustment of all control variables. The additional benefit of the coupled error covariance is that a cross-component impact is allowed, e.g., atmospheric observations can exert impact on chemistry analysis, and vice versa. Given the realistic structure of ensemble forecast error covariance produced by the WRF-Chem, we anticipate the ensemble-based coupled atmosphere–chemistry data assimilation will respond similarly to assimilation of real observations.

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Vishnu, V. C. Maha, and M. Rajalakshmi. "Video Surveillance for Vehicle Classification using Hybrid SVM and Enhanced Ensemble Classifier." Asian Journal of Research in Social Sciences and Humanities 6, cs1 (2016): 595. http://dx.doi.org/10.5958/2249-7315.2016.00985.0.

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Li, Fengyong, Jiang Yu, and Yanli Ren. "Data-Loss resilience video steganography using frame reference and data ensemble reconstruction." Mathematical Biosciences and Engineering 16, no. 5 (2019): 4559–80. http://dx.doi.org/10.3934/mbe.2019228.

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Aksenov, S. V., K. A. Kostin, A. V. Ivanova, J. Liang, and A. V. Zamyatin. "An Ensemble of Convolutional Neural Networks for the Use in Video Endoscopy." Sovremennye tehnologii v medicine 10, no. 2 (June 2018): 7. http://dx.doi.org/10.17691/stm2018.10.2.01.

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De-la-Torre, Miguel, Eric Granger, Robert Sabourin, and Dmitry O. Gorodnichy. "Adaptive skew-sensitive ensembles for face recognition in video surveillance." Pattern Recognition 48, no. 11 (November 2015): 3385–406. http://dx.doi.org/10.1016/j.patcog.2015.05.008.

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Pagano, C., E. Granger, R. Sabourin, G. L. Marcialis, and F. Roli. "Adaptive ensembles for face recognition in changing video surveillance environments." Information Sciences 286 (December 2014): 75–101. http://dx.doi.org/10.1016/j.ins.2014.07.005.

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Lin, Gui Yu, Wei Liang Li, and Fu Li Guo. "Preliminary Research on Length Conversion Factor of Assemble Boom." Advanced Materials Research 299-300 (July 2011): 929–35. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.929.

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As regards the solution of ensemble elastic stability of assemble and lattice boom with complicated boundary conditions are rarely discussed, it is always plaguing designers. In this article, through analyzing the characteristics of vice-boom and vice-boom strut bar be caused complex deformation under load, based on the deformation relationship among vice-boom, vice-boom strut bar and main-boom ends, establishing elastic stability theory mathematical-mechanical model, using the theory of calculating the Euler critical force, proposed the method and numerical value to determine length conversion factor of assemble boom. This article has an inaugural significance of theory.

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Gorokhovatskyi, Oleksii, and Olena Peredrii. "Ensemble of shallow convolutional neural networks for classification of gender in video stream." Advanced Information Systems 3, no. 4 (December 23, 2019): 74–79. http://dx.doi.org/10.20998/2522-9052.2019.4.11.

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Journal articles on the topic 'Ensemble vide'

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