56documents trouvés
Detection and characterization of physiological states in bioprocesses based on Hölder exponent
S.REGIS, A.DONCESCU, J.DESACHY
Antilles, DISCO, Université des Antil
Revue Scientifique : Knowledge-Based Systems, Vol.21, N°1, pp.70-79, Février 2008 , N° 07292
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Abstract
Today, the pace of progress in fermentation is fast and furious, particularly since the advent of genetic engineering and the recent advances in computer sciences and process control. The high cost associated with many fermentation processes makes optimization of bioreactor performance trough command control very desirable. Clearly, control of fermentation is recognized as a vital component in the operation and successful production of many industries. Todays advances in measurement, data acquisition and handling technologies provide a wealth of new data which can be used to improve existing models. In this article we propose a method of physiological state identification based on segmentation of bioreactor sensors signals. The underlying of this method is based on the detection of signals singularities by the Maximum of Modulus of Wavelets Transform and their characterization by Hölder exponent evaluation. The physiological states identification is based on the correlation product between biochemical signals. The efficiency of the method has been tested in a fed-batch fermentation having the goal to increase the biomass production.
Mots-Clés / Keywords
Wavelets transform; Hölder exponent; Correlation product; Bioprocess; Physiological state detection and characterization;
Théorie des fonctions de croyance pour la fusion et l'évaluation de la pertinence des sources d'informations: application à un bioprocédé fermentaire
S.REGIS, A.DONCESCU, J.DESACHY
Antilles, DISCO, Université des Antil
Revue Scientifique : Traitement du Signal, Vol.24, N°2, pp.115-131, 2007 , N° 07202
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110321Image color segmentation using the fuzzy tree algorithm T-LAMDA
A.DONCESCU, J.AGUILAR MARTIN, J.C.ATINE
DISCO
Revue Scientifique : Fuzzy Sets and Systems, Vol.158, N°3, pp.230-238, Février 2007 , N° 07235
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Abstract
The image segmentation is very sensitive to the features used in the similarity measure and the objects type. In this paper we introduce a new segmentation algorithm based on fuzzy clustering. This method allows to incorporate spatial information which yield the result more accurate and more robust to noise. It is completely automatized with respect to the number of clusters and the setting up of membership functions. The data structure based on a Fuzzy Tree Algorithm allows to reduce the CPU time.
Mots-Clés / Keywords
Fuzzy decision tree; Graphs; Fuzzy image segmentation;
Fault detection using differential flatness in guidance systems
W.C.LU, R.FELLOUAH, G.ANDREI, N.ZHANG, F.MORA CAMINO, A.DONCESCU
ENAC, DISCO
Manifestation avec acte : VI International Conference on System identification and Control Problems, Moscou (Russie), Janvier 2007, 5p. , N° 07649
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112853Automated abduction for computer forensics
A.DONCESCU, K.INOUE
DISCO, NII
Manifestation avec acte : 3rd International Conference on Autonomic and Trusted Computing (ATC 2006), Wuhan (Chine), Septembre 2006 , N° 06246
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110382Differential flatness and fault detection in flight guidance dynamics
R.FELLOUAH, W.C.LU, F.MORA CAMINO, A.DONCESCU
DISCO
Manifestation avec acte : 6th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes (SAFEPROCESS'2006), Beijing (Chine), 30 Août - 1er Septembre 2006, pp.211-216 , N° 06069
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107604CF-Induction applied to metabolic flux analysis
A.DONCESCU, K.INOUE, G.RICHARD
DISCO, NII, IRIT-UPS
Manifestation avec acte : 16th International Conference on Inductive Logic Programming, Santiago (Espagne), 24-27 Août 2006, 6p. , N° 06245
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110369Fuzzy clustering reinforced by wavelet transform for dense stereo correspondence
A.DONCESCU, S.REGIS
Antilles, DISCO
Manifestation avec acte : 11th IPMU International Conference, Paris (France), 2-7 Juillet 2006, 6p. , N° 06192
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108740Utilisation de la théorie des fonctions de croyance pour la caractérisation d'états physiologiques dans un bioprocédé fedbatch par la classification, et pour l'estimation de la pertinence de paramètres biochimiques
S.REGIS, A.DONCESCU, J.L.URIBELARREA, J.DESACHY
Antilles, DISCO, INSAT, Université des Antil
Manifestations avec acte à diffusion limitée : Journées STIC et Environnement 2006, Narbonne (France), 7-9 Avril 2006, 13p. , N° 06193
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106384Modélisation de la poursuite de véhicules par la logique floue
S.GONZALEZ-ROJO, I.BILEGAN, A.DONCESCU
ITCH Mexico, LAMIH, DISCO
Revue Scientifique : Recherche Transports Sécurité, Vol.93, pp.317-333, 2006 , N° 06241
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