Relevant bibliographies by topics / Estimation par intervalle

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

Academic literature on the topic 'Estimation par intervalle'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Estimation par intervalle"

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Sitta, R., L. Mandelbrot, F. Kieffer, I. Villena, and R. Thiébaut. "Estimation de modèles de régression avec covariables censurées par intervalle – application à l’essai randomisé Toxogest." Revue d'Épidémiologie et de Santé Publique 66 (May 2018): S143. http://dx.doi.org/10.1016/j.respe.2018.03.358.

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Boquet, Roxane, and Claude Rioux. "Estimation de la valeur non marchande des services rendus par les écosystèmes du parc marin du Saguenay–Saint-Laurent." Conservation et gestion 142, no. 2 (2018): 157–66. http://dx.doi.org/10.7202/1047156ar.

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Les espaces naturels ainsi que l’ensemble des usages qu’ils permettent représentent une valeur certaine pour les sociétés. Cette dernière peut être traduite par les retombées économiques de plusieurs activités comme le tourisme, par des valeurs implicites sur le marché immobilier, ou encore par le désir de protection environnementale. Or, les décisions des parties prenantes se fondent essentiellement sur la comparaison de ces valeurs avec des projets de développement économique. Ainsi, de nombreuses approches ont été testées afin d’attribuer une valeur monétaire à l’environnement. La méthode u
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Wanigaratne, S., E. Holowaty, H. Jiang, TA Norwood, R. Pietrusiak, and R. Brown. "Estimation du risque de cancer lié à l'exposition au tritium dans le cadre des activités courantes de la centrale nucléaire de Pickering (Ontario)." Maladies chroniques et blessures au Canada 33, no. 4 (2013): 278–89. http://dx.doi.org/10.24095/hpcdp.33.4.06f.

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Introduction D'après les données dont nous disposons, les niveaux actuels des émissions de tritium provenant des réacteurs CANDU au Canada n'entraîneraient pas d'effets néfastes sur la santé. Toutefois, les études ne précisent pas les doses spécifiques au tritium, et reposent sur un petit nombre de cas. La présente étude avait pour but de déterminer si le tritium émis par la centrale nucléaire de Pickering, en Ontario, lors de ses activités courantes, est associé à un risque de cancer. Méthodologie Nous avons constitué une cohorte rétrospective en couplant les données sur les résidents de Pick
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Saito, Yasuhiko, Eileen M. Crimmins, and Mark D. Hayward. "Stabilité des estimations de l’espérance de vie sans perte d’autonomie calculées au moyen de deux méthodes de construction de tables de survie." Articles 20, no. 2 (2004): 291–327. http://dx.doi.org/10.7202/010088ar.

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RÉSUMÉ Cet article aborde empiriquement la question de la stabilité relative, sur deux intervalles de temps, des estimations de l'espérance de vie sans pêne d'autonomie obtenues par la méthode de Sullivan et par la méthode des tables de survie multi-états. Les données analysées ont été obtenues à partir de trois vagues de la LSOA (Longitudinal Study of Aging), enquête dont l'échantillon est représentatif de la population hors-institution de 70 ans et plus. Les estimations calculées par la méthode de Sullivan sont plus stables que celles qui sont fournies par la méthode des tables de survis mul
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Obemeasor, R. E., K. Eghianruwa, and A. A. Akintola. "Utilisation et mauvais usage de nématocides dans la région d'lbadan au Nigeria : conséquences du mauvais usage sur l'efficacité thérapeutique chez les petits ruminants; une enquête." Revue d’élevage et de médecine vétérinaire des pays tropicaux 50, no. 3 (1997): 217–20. http://dx.doi.org/10.19182/remvt.9573.

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Une enquête a été menée pour déterminer quels étaient les nématocides couramment utilisés chez les petits ruminants et évaluer leur mode d'utilisation par rapport à d'autres pratiques d'élevage. Huit nématocides étaient communément employés. Chez 54 % des personnes interrogées les dosages étaient déterminés par une estimation visuelle du poids des animaux. De plus, 87,5 % des éleveurs et des pourcentages divers d'autres professionnels associés à la production animale ne savaient pas qu'il y avait une épidémiologie d'helminthes, et 33 % se fiaient uniquement aux manifestations cliniques comme s
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Wang, Steve C., Philip J. Everson, Heather Jianan Zhou, Dasol Park, and David J. Chudzicki. "Adaptive credible intervals on stratigraphic ranges when recovery potential is unknown." Paleobiology 42, no. 2 (2016): 240–56. http://dx.doi.org/10.1017/pab.2015.37.

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AbstractNumerous methods exist for estimating the true stratigraphic range of a fossil taxon based on the stratigraphic positions of its fossil occurrences. Many of these methods require the assumption of uniform fossil recovery potential—that fossils are equally likely to be found at any point within the taxon's true range. This assumption is unrealistic, because factors such as stratigraphic architecture, sampling effort, and the taxon's abundance and geographic range affect recovery potential. Other methods do not make this assumption, but they instead require a priori quantitative knowledg
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Xuan, Jian Ping, Yuan Feng Liu, and Tie Lin Shi. "Intervallic Coiflets for Numerical Calculation of Dynamic Stress Intensity Factor." Advanced Materials Research 562-564 (August 2012): 668–71. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.668.

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There are lots of practical problems which are related to the solution of Fredholm integral equations of the second kind. The present work proposes intervallic Coiflets for solving the equations. Illustrative problem involving dynamic stress and electric fields of a cracked piezoelectric excited by anti-plane shear wave is addressed. Permeable boundary condition has been used to obtain a pair of dual integral equations of the symmetric and antisymmetric parts which can be reduced to the solutions of two Fredholm integral equations of the second kind. The dynamic stress intensity factor is expr
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Favarin, José Laércio, Durval Dourado Neto, Axel García y García, Nilson Augusto Villa Nova, and Maria da Graça Guilherme Vieira Favarin. "Equações para a estimativa do índice de área foliar do cafeeiro." Pesquisa Agropecuária Brasileira 37, no. 6 (2002): 769–73. http://dx.doi.org/10.1590/s0100-204x2002000600005.

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Com o objetivo de estudar a variação temporal do índice de área foliar (IAF) da cultura de café, utilizando um método simples e não-destrutivo, foi instalado um experimento no Departamento de Produção Vegetal, da Escola Superior de Agricultura Luiz de Queiroz, da Universidade de São Paulo. Utilizou-se a cultivar Mundo Novo IAC 388-17, enxertada sobre a cultivar Apoatã IAC 2258 (de 15 até 35 meses de idade), no espaçamento de 2,5 x 1,0 m. Foram coletadas todas as folhas de duas plantas de café, em intervalos de 60 a 150 dias, para a mensuração da área foliar com o equipamento LI-COR (modelo 310
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Chen, Lei, Hua Yang, Takeshi Takaki, and Idaku Ishii. "Real-Time Optical Flow Estimation Using Multiple Frame-Straddling Intervals." Journal of Robotics and Mechatronics 24, no. 4 (2012): 686–98. http://dx.doi.org/10.20965/jrm.2012.p0686.

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In this paper, we propose a novel method for accurate optical flow estimation in real time for both high-speed and low-speed moving objects based on High-Frame-Rate (HFR) videos. We introduce a multiframe-straddling function to select several pairs of images with different frame intervals from an HFR image sequence even when the estimated optical flow is required to output at standard video rates (NTSC at 30 fps and PAL at 25 fps). The multiframestraddling function can remarkably improve the measurable range of velocities in optical flow estimation without heavy computation by adaptively selec
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Shapchenko, M. M., T. A. Shapchenko, S. E. Kligman, L. G. Maminov, O. V. Sasson, and V. M. Chernyak. "ALGORITHM OF LOCATION OF WATER INFLUX INTERVALS IN GAS WELLS." Oil and Gas Studies, no. 6 (December 30, 2015): 41–46. http://dx.doi.org/10.31660/0445-0108-2015-6-41-46.

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A method is proposed for identifying the well caused the pad flooding in the active operating well stock for locating the interval of water-influx interlayer in order to perform water isolation jobs based on the diagnostics of the producing formation current model. The searching for the pad flooding well is run in three steps: 1) Locating the group of potential wells capable to flood a pad based on estimation of the vapor phase, dynamic characteristics (velocity, flow rate), collection of dropping liquid samples for determination of additional water salinity. 2) Running the monitoring studies
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Dissertations / Theses on the topic "Estimation par intervalle"

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Andrieu, Guillaume. "Estimation par intervalle d'une distance évolutive." Montpellier 2, 1997. http://www.theses.fr/1997MON20233.

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L'objet de cette these est l'etude de la variabilite d'une estimation de la distance evolutive entre deux sequences moleculaires. Apres un bref apercu de l'historique des theories de l'evolution, nous presentons les differentes methodes de reconstruction phylogenetiques. Nous detaillons ensuite l'expression et l'estimation d'une distance evolutive entre deux sequences dans le cadre d'un modele stochastique de l'evolution. Deux methodes sont communement utilisees pour mesurer l'incertitude d'une estimation de la distance evolutive : l'estimation de la variance et le bootstrap. Nous proposons l'
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Bosa, Keven. "Estimation bayésienne par intervalle sur un espace paramétrique restreint." [S.l. : s.n.], 2007.

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Bosa, Keven. "Estimation bayésienne par intervalle sur un espace paramétrique restreint." Mémoire, Université de Sherbrooke, 2007. http://savoirs.usherbrooke.ca/handle/11143/4718.

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Le choix d'une méthode d'estimation n'est pas clair lorsqu'il y a des contraintes sur l'espace paramétrique. Aucune méthode ne fait l'unanimité, qu'elle soit fréquentiste ou bayésienne. Dans ce mémoire est développée une méthode bayésienne proposée par Marchand et Strawderman [9] pour l'estimation paramétrique par intervalle de certains modèles continus et unimodaux. Cette dernière possède de bonnes propriétés fréquentistes. Plusieurs exemples y sont analysés en profondeur. Finalement, de nouveaux résultats au niveau de la probabilité de recouvrement sont présentés pour des modèles log-concave
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Kharkovskaia, Tatiana. "Conception d'observateurs par intervalle pour les systèmes à paramètres distribués avec incertitudes." Thesis, Ecole centrale de Lille, 2019. http://www.theses.fr/2019ECLI0019.

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Ce travail présente de nouveaux résultats sur l'estimation d'état par intervalle pour des systèmes distribués incertains, qui sont des systèmes de dimension infinie : leur état, fonctionnel, est régi par des équations aux dérivées partielles (EDP) ou fonctionnelles (EDF). Le principe de l'observation par intervalle est d’estimer à chaque instant un ensemble de valeurs admissibles pour l'état (un intervalle), de manière cohérente avec la sortie mesurée. Les chapitres 2 et 3 se concentrent sur la conception d'observateurs par intervalle pour une EDP parabolique avec des conditions aux limites de
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Bahamyirou, Asma. "Sur les intervalles de confiance bayésiens pour des espaces de paramètres contraints et le taux de fausses découvertes." Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6986.

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Ce mémoire traite deux problèmes : en premier lieu, l'estimation paramétrique par intervalle dans un contexte où il y a des contraintes sur le paramètre et, en deuxième lieu la probabilité de fausses découvertes lorsqu'on réalise simultanément plusieurs tests d'hypothèses. Dans le premier chapitre, nous faisons un rappel sur les notions de base de l'inférence statistique à savoir l'estimation ponctuelle et par intervalle. Dans le deuxième chapitre, nous abordons la théorie de l'estimation par intervalle de confiance bayésien décrit dans [10]. Des résultats nouveaux sont présentés dans ce chapi
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Li, Qiaochu. "Contribution à la planification d'expériences, à l'estimation et au diagnostic actif de systèmes dynamiques non linéaires : application au domaine aéronautique." Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2231/document.

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Dans ce travail de thèse, nous nous focalisons sur le problème de l'intégration d'incertitude à erreurs bornées pour les systèmes dynamiques, dont les entrées et les états initiaux doivent être optimaux afin de réaliser certaines fonctionnalités.Le document comporte 5 chapitres: le premier est une introduction présentant le panorama du travail. Le deuxième chapitre présente les outils de base de l'analyse par intervalle. Le chapitre 3 est dédié à l'estimation d'états et de paramètres. Nous décrivons d'abord une procédure pour résoudre un système d'équations différentielles ordinaires avec l'ai
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Tran, Tuan Anh. "Cadre unifié pour la modélisation des incertitudes statistiques et bornées : application à la détection et isolation de défauts dans les systèmes dynamiques incertains par estimation." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30292/document.

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Cette thèse porte sur l'estimation d'état des systèmes dynamiques à temps discret dans le contexte de l'intégration d'incertitudes statistiques et à erreurs bornées. Partant du filtre de Kalman intervalle (IKF) et de son amélioration (iIKF), nous proposons un algorithme de filtrage pour des systèmes linéaires dont les bruits sont gaussiens incertains, c'est-à-dire de moyenne et matrice de covariance définies par leur appartenance à des intervalles. Ce nouveau filtre de Kalman intervalle (UBIKF) repose sur la recherche d'une matrice de gain ponctuelle minimisant une borne majorante de l'ensembl
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Boulanger, Xavier. "Modélisation du canal de propagation Terre-Espace en bandes Ka et Q/V : synthèse de séries temporelles, variabilité statistique et estimation de risque." Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0009/document.

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Les bandes de fréquences utilisées conventionnellement pour les systèmes fixes de télécommunication par satellites (bandes C et Ku i.e. 4-15 GHz) sont congestionnées. Néanmoins, le marché des télécommunications civil et de défense accuse une demande de plus en plus importante en services multimédia haut-débit. Par conséquent, l'augmentation de la fréquence porteuse vers les bandes Ka et Q/V (20-40/50 GHz)est activement étudiée. Pour des fréquences supérieures à 5 GHz, la propagation des signaux radioélectriques souffre de l'atténuation troposphérique. Parmi les différents contributeurs à l'aff
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Rabehi, Djahid. "Estimation par Intervalles des Systèmes Cyber-physiques." Thesis, Orléans, 2019. http://www.theses.fr/2019ORLE3038.

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Les systèmes cyber-physiques sont des intégrations intelligentes de calculateurs, de réseaux de communications, et de processus physiques. Dans cette thèse, nous travaillons dans le contexte erreur inconnue mais bornée de borne connue, et nous nous intéressons à l'estimation d'état des systèmes dynamiques sous contraintes de communication. Nous proposons des méthodes de synthèse d'observateurs par intervalles pour des systèmes linéaires à temps continu, et dont les mesures à temps discret sont transmises à travers un réseau de communication.Les contributions de cette thèse sont les suivantes:
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Kieffer, Michel. "Estimation ensembliste par analyse par intervalles Application à la localisation d'un véhicule." Phd thesis, Université Paris Sud - Paris XI, 1999. http://tel.archives-ouvertes.fr/tel-00473805.

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Dans ce travail, nous développons des outils d'analyse par intervalles pour l'automatique. Nous nous intéressons plus particulièrement à l'identification de paramètres et à l'estimation d'état pour des modèles non-linéaires. Pour l'identification, l'algorithme d'optimisation globale de Hansen fournit un encadrement de tous les vecteurs de paramètres minimisant une fonction coût mettant en jeu les grandeurs mesurées sur un dispositif réel à modéliser et leur pendant prédit par son modèle. Nous montrons que ceci peut mettre en évidence d'éventuels problèmes d'identifiabilité sans étude préalable
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Book chapters on the topic "Estimation par intervalle"

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Lejeune, Michel. "Estimation paramétrique par intervalle de confiance." In Statistique. Springer Paris, 2010. http://dx.doi.org/10.1007/978-2-8178-0157-5_7.

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"5 ESTIMATION PONCTUELLE ET PAR INTERVALLE." In Mathématiques et statistique pour les sciences de la nature. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0898-4-007.

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"5 ESTIMATION PONCTUELLE ET PAR INTERVALLE." In Mathématiques et statistique pour les sciences de la nature. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0898-4.c007.

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Edge, M. D. "Bayesian estimation and inference." In Statistical Thinking from Scratch. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198827627.003.0012.

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Bayesian methods allow researchers to combine precise descriptions of prior beliefs with new data in a principled way. The main object of interest in Bayesian statistics is the posterior distribution, which describes the uncertainty associated with parameters given prior beliefs about them and the observed data. The posterior can be difficult to compute mathematically, but computational methods can give arbitrarily good approximations in most cases. Bayesian point and interval estimates are features of the posterior, such as measures of its central tendency or intervals into which the parameter falls with specified probability. Bayesian hypothesis testing is complicated and controversial, but one relevant tool is the Bayes factor, which compares the probability of observing the data under a pair of distinct hypotheses.
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Hankin, David G., Michael S. Mohr, and Ken B. Newman. "Systematic sampling." In Sampling Theory. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198815792.003.0004.

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In many contexts it is difficult or impossible to select a simple random sample. For example, the number of units in the finite population, N, may not be known in advance, or it may not be feasible to assign labels to all units in the population and to select an SRS from these labels (e.g., crabs within boxes on a fishing vessel). Instead, one may select a random start, r, on the integers 1 through k and then select that unit and every kth unit thereafter for inclusion in the sample. This selection method, called linear systematic sampling, results in an extremely restricted randomization—there are only k possible linear systematic samples—compared to the typically large number [N!/(N-n)!n!] of possible samples of size n that can be selected from N by SRS. If units are in random order, then linear systematic sampling with mean-per-unit estimation will have sampling variance comparable to SRS with mean-per-unit estimation. But if there is a trend of increase or decrease in unit-specific y value with unit label or location, then sampling variance of a mean-per-unit estimator for a linear systematic design may be substantially less than for an SRS design. Circular and fractional interval systematic sampling designs are also presented. The disadvantage of these systematic sampling designs is that the highly restricted randomizations generally rule out unbiased estimation of sampling variance from a single systematic sample. Several approaches for variance estimation are considered.
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Prabhakar, C. J. "Analysis of Face Space for Recognition using Interval-Valued Subspace Technique." In Cross-Disciplinary Applications of Artificial Intelligence and Pattern Recognition. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-61350-429-1.ch007.

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The major contribution of the research work presented in this chapter is the development of effective face recognition algorithm using analysis of face space in the interval-valued subspace. The analysis of face images is used for various purposes such as facial expression classification, gender determination, age estimation, emotion assessment, face recognition, et cetera. The research community of face image analysis has developed many techniques for face recognition; one of the successful techniques is based on subspace analysis. In the first part of the chapter, the authors present discussion of earliest face recognition techniques, which are considered as mile stones in the roadmap of subspace based face recognition techniques. The second part presents one of the efficient interval-valued subspace techniques, namely, symbolic Kernel Fisher Discriminant analysis (Symbolic KFD), in which the interval type features are extracted in contrast to classical subspace based techniques where single valued features are used for face representation and recognition.
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Edge, M. D. "Semiparametric estimation and inference." In Statistical Thinking from Scratch. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198827627.003.0010.

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Nonparametric and semiparametric statistical methods assume models whose properties cannot be described by a finite number of parameters. For example, a linear regression model that assumes that the disturbances are independent draws from an unknown distribution is semiparametric—it includes the intercept and slope as regression parameters but has a nonparametric part, the unknown distribution of the disturbances. Nonparametric and semiparametric methods focus on the empirical distribution function, which, assuming that the data are really independent observations from the same distribution, is a consistent estimator of the true cumulative distribution function. In this chapter, with plug-in estimation and the method of moments, functionals or parameters are estimated by treating the empirical distribution function as if it were the true cumulative distribution function. Such estimators are consistent. To understand the variation of point estimates, bootstrapping is used to resample from the empirical distribution function. For hypothesis testing, one can either use a bootstrap-based confidence interval or conduct a permutation test, which can be designed to test null hypotheses of independence or exchangeability. Resampling methods—including bootstrapping and permutation testing—are flexible and easy to implement with a little programming expertise.
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Perry, Mary Jane. "Measurements of Phytoplankton Absorption Other Than Per Unit of Chlorophyll a." In Ocean Optics. Oxford University Press, 1994. http://dx.doi.org/10.1093/oso/9780195068436.003.0010.

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Phytoplankton plays a critical role in determining light fields of the world’s oceans, primarily through absorption of light by photosynthetic pigments (see Chapters 1 to 5). Consequently there has been considerable interest from optical researchers in determining phytoplankton absorption. Conversely, from the biological point of view, this absorption assumes paramount importance because it is the sole source of energy for photosynthesis and thus should be central to direct estimates of primary production. There are two logical parts in determining this effect of phytoplankton and in estimating primary production. One is the estimation of abundance, and the other is estimation of specific effect or specific production rate. The earliest estimates of phytoplankton abundance were based on cell counts. From the time of Francis A. Richards’ Ph.D. dissertation, however, measurement of chlorophyll a concentration per unit of water volume, because of its relative ease, has assumed a central role in abundance estimation. Physiological studies and technological advances in optical instrumentation over the last decade lead me to question whether the continued use of chlorophyll a concentration to estimate phytoplankton abundance was wise either from the viewpoint of narrowing confidence intervals on estimates of absorption and production or from the viewpoint of mechanistic understanding of the processes involved. The measurement of chlorophyll a has become such a routine tool of biological oceanography, however, that the reasons for my heresy require elaboration. Some of the reasons are not too subtle. Chlorophyll a exists with other photosynthetic pigments in organized arrays associated with photosynthetic membranes. The function of these arrays is to harvest photons and transfer their energy to the specialized reaction center complexes that mediate photochemistry (see Chapter 9). The size of the arrays or packages and the ratio of chlorophyll a molecules to other light-harvesting pigments within the packages vary with phytoplankton cell size, total irradiance and its spectral distribution, as well as with other environmental parameters. It is well known that dark-adapted (= light-limited) cells increase their complements of photopigments. This plasticity in pigment packaging is evidenced in the variability of chlorophyll a-specific absorption coefficients. Simple optical models based only on chlorophyll a concentrations cannot be accurate or precise unless the effects of pigment packaging are considered.
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Rodrigues Liska, Gilberto, Luiz Alberto Beijo, Marcelo Ângelo Cirillo, Flávio Meira Borém, and Fortunato Silva de Menezes. "Intensive Computational Method Applied for Assessing Specialty Coffees by Trained and Untrained Consumers." In Confidence Regions - Applications, Tools and Challenges of Estimation [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.95234.

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The sensory analysis of coffees assumes that a sensory panel is formed by tasters trained according to the recommendations of the American Specialty Coffee Association. However, the choice that routinely determines the preference of a coffee is made through experimentation with consumers, in which, for the most part, they have no specific ability in relation to sensory characteristics. Considering that untrained consumers or those with basic knowledge regarding the quality of specialty coffees have little ability to discriminate between different sensory attributes, it is reasonable to admit the highest score given by a taster. Given this fact, probabilistic studies considering appropriate probability distributions are necessary. To access the uncertainty inherent in the notes given by the tasters, resampling methods such as Monte Carlo’s can be considered and when there is no knowledge about the distribution of a given statistic, p-Bootstrap confidence intervals become a viable alternative. This text will bring considerations about the use of the non-parametric resampling method by Bootstrap with application in sensory analysis, using probability distributions related to the maximum scores of tasters and accessing the most frequent region (mode) through computational resampling methods.
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Ashraf, Zubair, Md Gulzarul Hasan, and Mohd Shoaib Khan. "Solving Interval Type-2 Fuzzy Reliability-Redundancy Allocation Systems With Efficient PSO Algorithm." In Advances in Systems Analysis, Software Engineering, and High Performance Computing. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7564-2.ch007.

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A new type-2 fuzzy reliability-redundancy allocation problem (IT2FRRAP) is introduced in this study, which maximizes system reliability underneath the type-2 fuzzy uncertainty. Throughout the design process, estimation of system parameters with type-2 fuzzy sets is very rational, as many experts may have varying views on the numerous risks involved with the multi-state framework. The authors consider fuzzy membership functions of interval type-2 to fuzzy set to reflect the reliability of the sub-system. By using the extension theory, they evaluate the total system reliability as per respective configurations (i.e., series, parallel, non-parallel, and bridge). They developed a novel solution method focused on particle swarm optimization to address the IT2FRRAP. They carried out the computational simulations on various numerical databases to show the gravity of the proposed formulations. To compare its productiveness, a detailed analysis of the proposed solution was made with the genetic algorithm (GA).
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Conference papers on the topic "Estimation par intervalle"

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Takemura, Kentaro, Euisun Kim, and Jun Ueda. "Individualized Inter-Stimulus Interval Estimation for Neural Facilitation in Human Motor System: A Particle Filtering Approach." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9155.

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Quantitative understanding of the human neuromotor system is essential for the implementation of the future robotic therapeutic exercises. For this purpose, sensorimotor adaptations in voluntary and involuntary movements facilitated by peripheral stimulation and resultant motor-evoked potentials (MEP) must be well characterized. One such facilitation exercise is paired associative stimulation (PAS). However, effective inter-stimulus intervals between cortical and peripheral stimulations are highly variable between individuals due to different physiological characteristics. Past studies measure
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Worthingham, Robert, Tom Morrison, and Guy Desjardins. "Comparison of Estimates From a Growth Model 5 Years After the Previous Inspection." In 2000 3rd International Pipeline Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/ipc2000-208.

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A corrosion growth modelling procedure using repeated inline inspection data has been employed as part of the maintenance program planning for a pipeline in the Alberta portion of the TransCanada system. The methodology of matching corrosion features between the different in-line inspections, and estimating their severity at a future date, is shown to be an excellent proactive cost saving methodology. Throughout this paper estimated 80% confidence intervals for tool measurement error, total prediction error and growth methodology error are given. In this abstract the values have been rounded.
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Kang, Myoungcheol, Stephen Ogaji, Pericles Pilidis, and Changduk Kong. "An Approach to Maintenance Cost Estimation for Aircraft Engines." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50564.

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This study presents a detailed analysis of aircraft engine maintenance cost based on the relationships between engine performance and geometric parameters. Estimating engine maintenance cost is very complicated and depends upon empirical work based on know-how and huge database to develop the industrial cost estimation program. Engine maintenance costs are basically influenced by the shop visit rates (SVR), the workscope of each shop visit, the shop visit pattern and the manhours and materials used in each shop visit. To estimate these values for a specific engine model, there is a need to dev
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Levon, Taylor, Kit Clemons, Ben Zapp, and Tim Foltz. "A Multi-Disciplinary Approach for Well Spacing and Treatment Design Optimization in the Midland Basin Using Lateral Pore Pressure Estimation and Depletion Modeling." In SPE Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/204195-ms.

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Abstract With a recent trend in increased infill well development in the Midland basin and other unconventional plays, it has been shown that depletion has a significant impact on hydraulic fracture propagation. This is largely because production drawdown causes in-situ stress changes, resulting in asymmetric fracture growth toward the depleted regions. In turn, this can have a negative impact on production capacity. For the initial part of this study, an infill child well was drilled and completed adjacent to a parent well that had been producing for two years. Due to drilling difficulties, t
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Martínez-Díaz, Margarita, and Ignacio Pérez Pérez. "An algorithm for the estimation of road traffic space mean speeds from double loop detector data." In CIT2016. Congreso de Ingeniería del Transporte. Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/cit2016.2016.3208.

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Most algorithms trying to analyze or forecast road traffic rely on many inputs, but in practice, calculations are usually limited by the available data and measurement equipment. Generally, some of these inputs are substituted by raw or even inappropriate estimations, which in some cases come into conflict with the fundamentals of traffic flow theory. This paper refers to one common example of these bad practices. Many traffic management centres depend on the data provided by double loop detectors, which supply, among others, vehicle speeds. The common data treatment is to compute the arithmet
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Huang, Weifeng, Nima Rafibakhsh, Matthew I. Campbell, and Christopher Hoyle. "Product Based Sequence Evaluation for Automated Assembly Planning." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68298.

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Assembly time estimation is a key factor in evaluating the performance of the assembly process. The overall goal of this research is to develop a method to automatically estimate product assembly time based on the tessellated model. This paper proposes a way to divide an assembly operation into four actions which consist of a) part movement, b) part installation, c) secure operations, and d) subassembly rotations. Four predictive models are built for estimating these action times with the input features that can be obtained from the tessellated model automatically. In order to estimate the fou
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Passano, Elizabeth, and Philippe Mainc¸on. "Estimating Long-Term Distributions of Extreme Response of a Catenary Riser." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-50151.

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The purpose of this paper is to present a method for efficient and unbiased estimation of the long-term extreme response distribution of a catenary riser. In this approach a computationally inexpensive, nonlinear response predictor is used to estimate the response in all sea states, thus allowing selection of relevant sea states and intervals within sea states for detailed, nonlinear finite element simulations. This method requires significantly less simulation time than the conventional approach with extensive nonlinear simulations of many sea states. The method is applied to a catenary riser
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Liu, Yue, Weifeng Huang, Nima Rafibakhsh, Matthew I. Campbell, and Christopher Hoyle. "Design of Experiments to Support Automated Assembly Planning." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66910.

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Assembly time estimation is a key factor in evaluating the performance of the assembly process. The overall goal of this study is to develop an efficient assembly time estimation method by generating the prediction model from an experimental design. This paper proposes a way to divide an assembly operation into four actions which consist of a) part movement, b) part installation, c) secure operations, and d) subassembly rotations. The focus of this paper is to design a time estimation model for the secure operation. To model secure times, a design of experiments is applied to collect experimen
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N. Gonçalves, Mariana, Helder De Paula, and André M. Alzamora. "Técnicas para Diagnóstico e Estimativa de Vida Útil de Cabos Subterrâneos: Discussão sobre Alternativas, Aplicações e Potencialidades." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1474.

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O grande desafio para empresas e concessionárias que possuem redes elétricas subterrâneas é identificar os cabos que estão em boas condições de operação, os que demandam manutenção e aqueles que precisarão ser substituídos em um curto intervalo de tempo, para que se torne possível realizar um planejamento adequado dos investimentos e das intervenções de manutenção, otimizando a utilização de seus recursos. Pesquisadores ao redor do mundo há tempos vêm direcionando esforços para conceber uma metodologia capaz de avaliar o estado da isolação destes cabos de modo a fornecer uma estimativa da vida
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Kulkarni, Sagar, Shuai Guo, Camilo F. Silva, and Wolfgang Polifke. "Confidence in Flame Impulse Response Estimation From LES With Uncertain Thermal Boundary Conditions." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58352.

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Abstract Thermoacoustic stability analysis is an essential part of the engine development process. Typically, thermoacoustic stability is determined by hybrid approaches such as network models or Helmholtz solvers. These approaches require information on the flame dynamic response. The combined approach of advanced System identification (SI) and Large Eddy Simulation (LES) is an efficient strategy to compute the flame dynamic response to flow perturbation in terms of the Finite Impulse Response (FIR). The identified FIR is uncertain due in part to the aleatoric uncertainties caused by applying
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