Résultat de la recherche
5 recherche sur le tag
'ondelettes' 
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Interroger des sources externes
Titre : Application des ondelettes à l'analyse des séries chronologiques Type de document : texte imprimé Auteurs : Ryma Douas, Auteur ; M Bousseboua, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 87 f. Format : 31 cm. Note générale : Magister
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
MathématiquesTags : processus à longue mémoire ondelettes probabilité et statistique Index. décimale : 510 Mathématiques Diplôme : Magistère En ligne : ../theses/math/DOU6096.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=6020 Application des ondelettes à l'analyse des séries chronologiques [texte imprimé] / Ryma Douas, Auteur ; M Bousseboua, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 87 f. ; 31 cm.
Magister
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
MathématiquesTags : processus à longue mémoire ondelettes probabilité et statistique Index. décimale : 510 Mathématiques Diplôme : Magistère En ligne : ../theses/math/DOU6096.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=6020 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité DOU/6096 DOU/6096 Thèse Bibliothèque principale Thèses Disponible Applications des techniques réseaux de neurones et ondelettes aux dispositifs éléctromagnétiques / Abdelmadjid Nouicer
Titre : Applications des techniques réseaux de neurones et ondelettes aux dispositifs éléctromagnétiques Type de document : texte imprimé Auteurs : Abdelmadjid Nouicer ; Univ. de Constantine, Éditeur scientifique ; M.E.H. Latreche, Directeur de thèse Année de publication : 2005 Importance : 110 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale 01 CD Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Réseaux Neurones Ondelettes Dispositifs éléctromagnétiques Index. décimale : 622 Electro-Technique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=348 Applications des techniques réseaux de neurones et ondelettes aux dispositifs éléctromagnétiques [texte imprimé] / Abdelmadjid Nouicer ; Univ. de Constantine, Éditeur scientifique ; M.E.H. Latreche, Directeur de thèse . - 2005 . - 110 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Réseaux Neurones Ondelettes Dispositifs éléctromagnétiques Index. décimale : 622 Electro-Technique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=348 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité NOU/4354 NOU/4354 Thèse Bibliothèque principale Thèses Disponible
Titre : Méthode hybride à base d'ondelettes pour la détection de contour avec la régle de fusion " AND " Type de document : texte imprimé Auteurs : Zoubeida Messali ; Univ. de Constantine, Éditeur scientifique ; M Barkat, Directeur de thèse Année de publication : 2000 Importance : 88 f. Format : 30 cm Note générale : 01 exp. disponible dans la salle de recherche
02 exp. disponible au magasin de la bibliothèque centraleLangues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Ondelettes Méthode hybride Contour règle de fusion " AND " Index. décimale : 621 Electronique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2533 Méthode hybride à base d'ondelettes pour la détection de contour avec la régle de fusion " AND " [texte imprimé] / Zoubeida Messali ; Univ. de Constantine, Éditeur scientifique ; M Barkat, Directeur de thèse . - 2000 . - 88 f. ; 30 cm.
01 exp. disponible dans la salle de recherche
02 exp. disponible au magasin de la bibliothèque centrale
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Ondelettes Méthode hybride Contour règle de fusion " AND " Index. décimale : 621 Electronique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2533 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MES/3360 MES/3360 Thèse Bibliothèque principale Thèses Disponible
Titre : Les barrages en exploitation dans l’Est algérien : fonctionnement hydrologique et aménagement. Étude de cas Type de document : texte imprimé Auteurs : Farah Boutouatou, Auteur ; Azzedine Mebarki, Directeur de thèse ; Benoit Laignel, Directeur de thèse Mention d'édition : 05/11/2020 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2020 Importance : 173 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Aménagement du TerritoireTags : Aménagement du territoire: Hydrologie et gestion des hydrosystémes Bassin versant barrage bilan de régularisation matrice de Bertin ondelettes variabilité hydrologique envasement aménagement Est algérien Basin catchment dam regularization balance Bertin matrix wavelet hydrological variability sedimentation planning East Algeria حوض تجميعي السد، الموازنة المائية مصفوفة برتين اطياف الموجات التغيرات الهيدرولوجية التوحل التهيئة الشرق الجزائري Index. décimale : 711 (Aménagement du territoire) Résumé :
During last three decades, Algeria is known for an immense and ambitious program in building of dams. Climatically, East Algeria is of the most abundant rainfall in the territory, where 25 dams are recently in operation, distributed through watersheds, with very contrasting physical characters. On the hydrotechnical plan, it’s characterized by the large variety in hydraulic properties specified from the perspective of their basins catchment, availability of lakes/reservoirs, and other auxiliary works. Data of water balance from the National Agency of Dams and Transfers (A.N.B.T) associates the follow-up and studies on the monthly and annual evolutions of entries, exits and deficits in the dams, as well as the knowledge of the hydrological behavior of the construction driven by the rainfall and other climatic fluctuations generally. Based on the analysis in ten dams with a hydrological observation over 23 years (from September 1990 to August 2013), a significant difference between the average interannual regulated volume (21.0 hm³) and theoretical regulated volume (37.7 hm³) shows an importance deficit in the water supply system which is strongly related to the frequency of wet and dry years. A chronological graphic method, with a statistical approach in data processing (type ""Bertin matrix""), is applied for three principal parameters (input, rainfall and storage rate). The result indicates a strong relationship between the parameters studied: a clear growth from the dry years from September 1990 until August 2002, and vice versa for wet years from 2003. These results are confirmed by the wavelet analysis: the dams storability are strongly influenced (from 66 % to 93 %) by a climatic variability and the left (from 7 to 34 %) is related to other factors such as the physiography of basin catchments. Results of the water balance show strong water losses by evaporation. The volume of water leaked, particularly on the karst sites (Foum El Gherza and Hammam Grouz), can reach to a significant peak specifically during the wet years 1990/91 and 2004/05. Otherwise, the phenomena of risings origins from excessive volumes evacuated from reservoirs or drainage of dams as details in the flood study for three dams Cheffia, Zardezas and Foum El Gherza. The quantification of sediment volumes in the dams (bathymetric campaigns 2004 and 2014) shows a reduction in storage capacity of the dams over time with a storage loss of 231 hm³ according to the survey in 2004, and 328 hm³ comparing to 2014. Finally, the analysis focuses on the inter-basin water transfer systems from large dams, and on the possibility of an interconnected management system to cooperate the basins in Eastern Algeria.Note de contenu : Annexes. Diplôme : Doctorat En ligne : ../theses/amenagement/BOU7685.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11519 Les barrages en exploitation dans l’Est algérien : fonctionnement hydrologique et aménagement. Étude de cas [texte imprimé] / Farah Boutouatou, Auteur ; Azzedine Mebarki, Directeur de thèse ; Benoit Laignel, Directeur de thèse . - 05/11/2020 . - جامعة الإخوة منتوري قسنطينة, 2020 . - 173 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Aménagement du TerritoireTags : Aménagement du territoire: Hydrologie et gestion des hydrosystémes Bassin versant barrage bilan de régularisation matrice de Bertin ondelettes variabilité hydrologique envasement aménagement Est algérien Basin catchment dam regularization balance Bertin matrix wavelet hydrological variability sedimentation planning East Algeria حوض تجميعي السد، الموازنة المائية مصفوفة برتين اطياف الموجات التغيرات الهيدرولوجية التوحل التهيئة الشرق الجزائري Index. décimale : 711 (Aménagement du territoire) Résumé :
During last three decades, Algeria is known for an immense and ambitious program in building of dams. Climatically, East Algeria is of the most abundant rainfall in the territory, where 25 dams are recently in operation, distributed through watersheds, with very contrasting physical characters. On the hydrotechnical plan, it’s characterized by the large variety in hydraulic properties specified from the perspective of their basins catchment, availability of lakes/reservoirs, and other auxiliary works. Data of water balance from the National Agency of Dams and Transfers (A.N.B.T) associates the follow-up and studies on the monthly and annual evolutions of entries, exits and deficits in the dams, as well as the knowledge of the hydrological behavior of the construction driven by the rainfall and other climatic fluctuations generally. Based on the analysis in ten dams with a hydrological observation over 23 years (from September 1990 to August 2013), a significant difference between the average interannual regulated volume (21.0 hm³) and theoretical regulated volume (37.7 hm³) shows an importance deficit in the water supply system which is strongly related to the frequency of wet and dry years. A chronological graphic method, with a statistical approach in data processing (type ""Bertin matrix""), is applied for three principal parameters (input, rainfall and storage rate). The result indicates a strong relationship between the parameters studied: a clear growth from the dry years from September 1990 until August 2002, and vice versa for wet years from 2003. These results are confirmed by the wavelet analysis: the dams storability are strongly influenced (from 66 % to 93 %) by a climatic variability and the left (from 7 to 34 %) is related to other factors such as the physiography of basin catchments. Results of the water balance show strong water losses by evaporation. The volume of water leaked, particularly on the karst sites (Foum El Gherza and Hammam Grouz), can reach to a significant peak specifically during the wet years 1990/91 and 2004/05. Otherwise, the phenomena of risings origins from excessive volumes evacuated from reservoirs or drainage of dams as details in the flood study for three dams Cheffia, Zardezas and Foum El Gherza. The quantification of sediment volumes in the dams (bathymetric campaigns 2004 and 2014) shows a reduction in storage capacity of the dams over time with a storage loss of 231 hm³ according to the survey in 2004, and 328 hm³ comparing to 2014. Finally, the analysis focuses on the inter-basin water transfer systems from large dams, and on the possibility of an interconnected management system to cooperate the basins in Eastern Algeria.Note de contenu : Annexes. Diplôme : Doctorat En ligne : ../theses/amenagement/BOU7685.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11519 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/7685 BOU/7685 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution au diagnostic de la machine asynchrone en temps réel Type de document : texte imprimé Auteurs : Mohamed Amine Moussa, Auteur ; Abdelmalek Khezzar, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 142 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Machine asynchrone Diagnostic en temps réel harmoniques d’espace cassure de barre déséquilibre d’alimentation excentricité transformée de Fourier DFT glissante ZoomFFT Goertzel algorithmes de MUSIC algorithmes Zoom-MUSIC Ondelettes Fuite des lobes latéraux Online asynchronous machine diagnostics Space harmonics Bar faults Power imbalance Eccentricity Fourier Transform Sliding DFT FFT Zoom MUSIC algorithms Zoom-MUSIC algorithms Wavelets Side lobes leakage Index. décimale : 622 Electro-Technique Résumé : The reliability and availability of electromechanical systems are increasingly required in the industrial sector. Unexpected shutdown in the electrical machine can lead to unplanned costly shutdowns and damage to equipment or even danger to people. Electrical machines are basic elements in many electrical systems and among all types of motors, induction motors are an important part of many industrial processes because of their advantages : simple construction, robustness and high performance. The variety of measured physical quantities makes it possible to analyze the defects of electrical machines differently, as it appeared in the works of this thesis where the techniques of the analysis of the stator current, the analysis of the Park vector and the mechanical vibration analysis are used. The signal approach is well chosen with the default that suits it, as well as the choice of the diagnostic algorithm and on which it is developed, adapted and implemented. The data processing taken from the various measured signals requires prior processing in order to make a decision on the healthy or faulty cases of electrical machines. The diversification of the signal processing methods usually used for the diagnosis of defects in the asynchronous machine was one of the subjects of this thesis. From the Fourier transform and its derivatives, the DFT, the sliding DFT, the Zoom-FFT and Goertzel, to the algorithms of MUSIC, Zoom-MUSIC and the Wavelets, a survey that was necessary to conclude on the possibilities of these methods to be considered for an online diagnosis. To achieve the diagnostic online goal, the exploitation of the lateral lobe leakage phenomenon when applying the sliding DFT is presented as a new method, the bar breakage and eccentricity defects are considered as typical cases to show the virtue of the advanced study.
Diplôme : Doctorat En ligne : ../theses/electrotec/MOU7319.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10969 Contribution au diagnostic de la machine asynchrone en temps réel [texte imprimé] / Mohamed Amine Moussa, Auteur ; Abdelmalek Khezzar, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 142 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Machine asynchrone Diagnostic en temps réel harmoniques d’espace cassure de barre déséquilibre d’alimentation excentricité transformée de Fourier DFT glissante ZoomFFT Goertzel algorithmes de MUSIC algorithmes Zoom-MUSIC Ondelettes Fuite des lobes latéraux Online asynchronous machine diagnostics Space harmonics Bar faults Power imbalance Eccentricity Fourier Transform Sliding DFT FFT Zoom MUSIC algorithms Zoom-MUSIC algorithms Wavelets Side lobes leakage Index. décimale : 622 Electro-Technique Résumé : The reliability and availability of electromechanical systems are increasingly required in the industrial sector. Unexpected shutdown in the electrical machine can lead to unplanned costly shutdowns and damage to equipment or even danger to people. Electrical machines are basic elements in many electrical systems and among all types of motors, induction motors are an important part of many industrial processes because of their advantages : simple construction, robustness and high performance. The variety of measured physical quantities makes it possible to analyze the defects of electrical machines differently, as it appeared in the works of this thesis where the techniques of the analysis of the stator current, the analysis of the Park vector and the mechanical vibration analysis are used. The signal approach is well chosen with the default that suits it, as well as the choice of the diagnostic algorithm and on which it is developed, adapted and implemented. The data processing taken from the various measured signals requires prior processing in order to make a decision on the healthy or faulty cases of electrical machines. The diversification of the signal processing methods usually used for the diagnosis of defects in the asynchronous machine was one of the subjects of this thesis. From the Fourier transform and its derivatives, the DFT, the sliding DFT, the Zoom-FFT and Goertzel, to the algorithms of MUSIC, Zoom-MUSIC and the Wavelets, a survey that was necessary to conclude on the possibilities of these methods to be considered for an online diagnosis. To achieve the diagnostic online goal, the exploitation of the lateral lobe leakage phenomenon when applying the sliding DFT is presented as a new method, the bar breakage and eccentricity defects are considered as typical cases to show the virtue of the advanced study.
Diplôme : Doctorat En ligne : ../theses/electrotec/MOU7319.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10969 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MOU/7319 MOU/7319 Thèse Bibliothèque principale Thèses Disponible
