Browsing by Author "Aipenova A."

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    ANALYSIS OF FILMS SHOWN IN CINEMAS IN KAZAKHSTAN
    (СДУ хабаршысы - 2019, 2019) Aipenova A. ; Altajanova G.
    Abstract. This research work about the analysis and information about 100 films shown in Kazakh cinemas in 2010-2018. In particular, the level and development of Kazakh films have been shown. In what genre films are shot in Kazakhstan, its interest rate. Mutual comparison of box office of Kazakhstan films and production companies has been done. In this paper, the percentages of the languages of the films have been shown. The countries of films shown in cinemas of Kazakhstan and their percentage are determined. The analysis of genres of foreign films has been presented. It was also reported about the budgets and box offices of foreign films, and their mutual verification. Countries of films with a high cash register. Well-known manufacturing companies and their percentage has been demonstrated. Awards of the films and their analysis shown in cinemas of Kazakhstan are defined.
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    MULTIVARIATE REGRESSION ANALYSIS AND MODELLING ON CARS DATASET
    (СДУ хабаршысы - 2019, 2019) Rayev Zh. ; Aipenova A. ; Suleizhan T. ; Zhumabek D. ; Duman A.
    Abstract. The results of the work are based on the construction of a mathematical model for determining unknown parameters using multivariate regression analysis. Structured data are given for the derivation and elimination of significant factors and coefficients. Also, machine learning simple regression models are used for modelling. The results have been evaluated and shown for comparative purposes.
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    QUALITATIVE AND NUMERICAL ANALYSIS OF LASERMODEL WITH OPTICAL INJECTION
    (Suleyman Demirel University, 2016) BaimenshinaG.K.; Aipenova A.; Kumekov S.E.
    The nonlinear processes plays important role in the development of new communication systems and computing elements. Understanding of laser instabilities is necessary for developing control techniques. From a dynamical systems point of view, semiconductor laser systems are very attractive due to the fact that they show an intriguing variety of complicated dynamics. Lasers including semiconductor, solid state with the additional external perturbation produce temporal and spatial instability. An optical injection is an example of such perturbation. External perturbations may destabilize or induce the sustain intensity oscillation. In this paper, we study the dynamics of a semiconductor laser with optical injection. The time behavior of solutions of a system of three coupled nonlinear rate equations, describing the electric field amplitude and the carrier concentration and the phase difference within the resonator, is discussed both qualitatively and numerically. We then concentrate on the periodic orbits that emanate from Hopf bifurcations. Depending on the injection strength and the phase difference, two types of oscillations can be found, such as relaxation and periodic oscillations.