Doctorat (Mathématiques): Recent submissions

  • Estimation non-paramétrique dans un modèle de censure. 
    El-Hadj Ali, Thouria; Messaci, Fatiha; Bouzebda, Salim (Université Frères Mentouri - Constantine 1, 2021-07-01)
    In this thesis, we are concerned with the uniform in bandwidth consistency of kernel-type estimators of the regression function derived by modern empirical process theory, under weaker conditions on the kernel than previously ...
  • Le théorème de Borsuk-Ulam pour les variétés de petite dimension. 
    Matmat, Chahrazade; Messaci, Fatiha; Blanchet, Christian (Université Frères Mentouri - Constantine 1, 2021-06-09)
    We study the Borsuk-Ulam theorem for the triplet (M, τ, Rn), where M is a compact, connected, 3-manifold equipped with a fixed-point-free involution τ. The largest value of n for which the Borsuk-Ulam theorem holds is ...
  • Réseaux de neurones dans la statistique exploratoire et à l’aide de la décision. 
    Ayache, Assia; Rahmani, Fouad Lazhar; Kharfouchi, Soumia (Université Frères Mentouri - Constantine 1, 2021-04-08)
    Data analysis (also called exploratory data analysis) is a family of statistical methods whose main characteristics are that they are multidimensional and descriptive. These methods can also be considered as special neural ...
  • Les modèles 2D MA à réponse impulsionnelle finie et à phase non minimale. 
    Beghriche, Hanane; Kharfouchi, Soumia (2021-04-09)
    Several fields of application such as: astronomy, acoustics, image and signal processing, etc., have used of higher order statistics. They played a crucial role in the identification of a non-minimal phase linear system. ...
  • Systèmes dynamiques à temps discrets et applications en biologie 
    Djeddi, Kamel; Zéraoulia, El-hadj (Université Frères Mentouri - Constantine 1, 2021)
    In this work, we are interested in the study of discrete-time dynamical systems. We are present the results of theoretical and numerical study of a discrete-time chaotic systems. We begin our study by plotting attractors ...
  • Quelques inégalités intégrales appliquées à certaines classes des équations aux dérivées partielles. 
    Boulares, Salah; Khellaf, Hassane (Université Frères Mentouri - Constantine 1, 2021-01-14)
    The aim of the present work is to give an exposition of the classical results about integral inequalities appeared in the mathematical researchs in recent years, and to establish some new integral inequalities, integrals ...
  • Aspects chaotiques dans les systèmes dynamiques discrets. 
    Djafri, Nabila; Hamaizia, Tayeb (Université Frères Mentouri - Constantine 1, 2021-04-05)
    A new modified 2-D discrete chaotic system with rational fraction is introduced in this thesis ; it has more complicated dynamical structures than HÈnon map and Lozi map. Some dynamical behaviors, Öxed points, period-doubling ...
  • Etude d’un problème aux limites non régulier. 
    Zekri, Abdelkrim; Berkane, Abdelhak (Université Frères Mentouri - Constantine 1, 2020-11-08)
    In this work, we are interested to the study of boundary values problems with integral boundary conditions. We obtain the existence and uniqueness of solutions with a priori estimate, and prove the Fredholm solvability of ...
  • 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, ...

Search DSpace


Browse

My Account