Doctorat (Mathématiques): Recent submissions

  • Stabilized numerical schemes for iterative solution of the generalized Stokes problem. 
    Chibani, Alima; Kechkar, Nasserdine (Université Frères Mentouri - Constantine 1, 2020-11-30)
    In this thesis, some novel discrete formulations for stabilizing the mixed nite element method Q1-Q0 (bilinear velocity and constant pressure approximations) are introduced and discussed for the generalized Stokes problem. ...
  • Les plans bayésiens dans les essais expérimentaux. 
    Bourezaz, Houda; Merabet, Hayet (Université Frères Mentouri - Constantine 1, 2020-12-03)
    The work presented in this thesis relates to the methodological problems which arise in the context of experimental tests, we have exposed the methods of the sequential analysis setting up to use it in the evaluation of ...
  • Chaos, stabilité et coexistence dans les systèmes dynamiques. 
    Meddour, Lotfi; Zeraoulia, Elhadj (Université Frères Mentouri - Constantine 1, 2020-11-12)
    The aim of the present work consists in a study of the equivalence of two chaotic dynamic systems and to examine and clarify the equivalence of the systems to the Lorenz system. For this purpose we had give several conditions ...
  • Existence and Asymptotic profiles for a problem of wave equation with strong damping. 
    Kassah Laouar, Lakhdar; Zennir, Khaled; Mamou, Ameur (Université Frères Mentouri - Constantine 1, 2020-11-08)
    In this thesis, we consider the study of some hyperbolic problems (equations and system of equations) with the presence of a viscoelastic term under some assumptions on initial data and boundary conditions, conditions on ...
  • Sur une classe de problèmes aux limites pour équations aux dérivées partielles. 
    Belmouloud, Imane; Memou, Ameur (Université Frères Mentouri - Constantine 1, 2020-10-15)
    This work is devoted to the solvability, the existence and the uniqueness of the solution of certain classes of boundary problems for partial differential equations of the parabolic type, combining non-local boundary ...
  • Synchronisation des systèmes chaotiques et hyperchaotiques 
    Kaouache, Smail; Abdelouahab, Mohammed-Salah (Université Frères Mentouri - Constantine 1, 2020-02-27)
    The objective of this thesis concerns principally two major subjects. The main contributions of the first subject of this work are: 1. The problem of generalized synchronization between two chaotic fractional non-commensurate ...
  • Étude de la convergence de la solution faible de quelques problèmes avec des lois de frottement régularisées. 
    Boudjedour, Allaoua; Dalah, Mohamed (Université Frères Mentouri - Constantine 1, 2020-02-20)
    This thesis proposes to study the convergence of the regularized solution denoted (uρ, ϕρ) to the solution (u, ϕ) when the parameter ρ tends to 0. At the beginning of this work, we set the physical framework and the ...
  • Stochastic differential equations and fixed point technique. 
    Benhadri, Mimia; Zeghdoudi, Halim (Université Frères Mentouri - Constantine 1, 2020-01-16)
    Fixed point theory has a long history of being used in nonlinear di§erential equations, in order to prove existence, uniqueness, or other qualitative properties of solutions. However, using the contraction mapping principle ...
  • Encadrement de la fiabilité des systèmes k-consécutifs-sur-n sous l’hypothèse de dépendance. 
    Megraoui, Fatima Zohra; Balaloui, Soheir (Université Frères Mentouri - Constantine 1, 2019-07-22)
    Most of the research on reliability theory has focused on the study of independence between the components of a system. However, in many real systems, dependence between components is one of the realistic and intractable ...
  • Choix de l’a priori en statistique Bayésienne dans les essais expérimentaux. 
    Djeridi, Zohra; Merabet, Abderrezak (Université Frères Mentouri - Constantine 1, 2019-07-07)
    The aim of this thesis, which was motivated by methodological problems that arise in the context of experimental trials, is to propose a hybrid Bayesian-frequentist approach using sequential Bayesian prediction of the index ...
  • Sur les modèles de distribution chronologiques temporelles multivariées 
    Beghriche, Abdelefateh; Zeghdoudi, Halim (Université Frères Mentouri - Constantine 1, 2019-07-25)
    This thesis proposes a new distribution, called as A Size Baised Gamma Lindley distribution (SBGaL). Various statistical properties like stochastic ordering, moment method, maximum likelihood estimation, mean deviations ...
  • Qualitative study of some dissipative systems for partial differential equations of hyperbolic-type. 
    Bouhali, Keltoum; El Lagoune, Fateh (Université Frères Mentouri - Constantine 1, 2019-07-04)
    In this thesis, we study the existence/nonexistence in time as well as the asymptotic behavior of some viscoelastic problems in the presence of different damping and different nonlinearities in the sources. In this regard, ...
  • Théorie des valeurs extrêmes 
    Bahi, Oussama; Dakhmouche, Maghlaoui (Université Frères Mentouri - Constantine 1, 2019-07-08)
    This work is intended as a contribution to the univariate statistics of extreme values and its applications to the calculation of risk. The purpose of this dissertation is to take a deep look at the statistical techniques ...
  • Estimation non paramétrique du mode conditionnel dans un modèle de censure. 
    Aouicha, Lamia; Messaci, Fatiha (Université Frères Mentouri - Constantine 1, 2019-06-13)
    In this thesis, we are interested in the nonparametric estimation of the conditional density and the conditional mode, in a twice censorship model. This means that the response variable Y is right censored by a variable R ...
  • Étude et analyse des problèmes électro-élastiques avec frottement. 
    Hacene-Chaouche, Soumeya; Dalah, Mohamed (Université Frères Mentouri - Constantine 1, 2019-05-05)
    In second is electro-viscoelastic problem which modeling the antiplane shear deformation of a cylinder in frictional contact with a foundation. The process this thesis, we study two problems, the first is electro-elastic ...
  • Systèmes dynamiques chaotiques 
    Bououden, Rabah; Abdelouahab, Mohammed-Salah (Université Frères Mentouri - Constantine 1, 2019-05-02)
    This thesis focuses on chaotic discrete dynamical systems. A detailed study on the notions of discrete dynamical systems such as the notion of stability, bifurcations and chaos are available in this thesis. In this thesis ...
  • Application de la sentinelle au systeme dynamique de la desertification. 
    Kaarer, Ines; Ayadi, Abdelhamid (Université Frères Mentouri - Constantine 1, 2018-12-10)
    This work is devoted to find, among all the bounded operators B, the one which gives a maximal controllability, in the sense that the operator image Hu=∫S(T-s)Bu(s)ds is maximal in the state space, following the inclusion ...
  • Estimation non paramétrique dans un modèle de censure et de dépendance. 
    Rouabah, Nour El Houda; Nemouchi, Nahima (Université Frères Mentouri - Constantine 1, 2019-05-19)
    The study of existing work shows that many of the asymptotic results obtained in the context of nonparametric statistics for right censored observations are based on the properties of the Kaplan Meier estimator of the ...
  • Etude de systemes dynamiques chaotiques. Analyse et applications 
    Kesmia, Mounira; Boughaba, Soraya (Université Frères Mentouri - Constantine 1, 2018-12-13)
    This thesis is based on the rigorous application of the theory of nonlinear dynamics and chaos to cardiac electrophysiology and more precisely to the control of cardiac alternans with a control signal constructed from ...
  • Contrôle des systèmes dynamiques chaotiques. 
    Laouira, Widad; Hamri, Nasr-Eddine (Université Frères Mentouri - Constantine 1, 2018-11-29)
    The mathematical theory of control has undergone a very important development and its scope currently covers many fields, including industry, economics and biology. . . This thesis deals with the study of the control ...

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