Relevance. The object of this research is the managerial culture in the museums of the Republic of Kazakhstan. The study considers a management culture in museums on a large scale, as museums of the Republic of Kazakhstan are a part of the world culture and their development occurs not in self-isolation from the world, but in this world, though in time of experiencing ...

This work describes the production of single crystals of the semiconducting quaternary compound Cu2ZnGeSe4 using a gas chemical method in which iodine was used as a transporter. For all the synthesized samples, their phase state, crystal structure syngony and lattice constants were refined. The unit cell of the studied compound is characterized by tetragonal symmetry. The ...

In this work, the Gauss-Bonnet model of modified gravity is investigated, where some arbitrary function G is added to the Einstein-Hilbert action. This theory explains the accelerated expansion of the Universe. In this work. The article proposes F(R, G) = f(R) + η(G) modified gravity, which considers two gravities f(R) and η(G), where f(R) is a function from the Ricci scalar, ...

This paper explores models of the FLRW universe that incorporate a time-varying cosmological term Λ(t). Specifically, we assume a power-law form for the cosmological term as a function of the scale factor: Λ(t)=Λ0a(t)-α, where Λ0 represents the present value of the cosmological term. Then, we derive an exact solution to Einstein's field equations within the framework of Λ(t)CDM ...

In this paper, we propose a specialized parameterization for the Hubble parameter, inspired by ΛCDM cosmology, to investigate the cosmic expansion history of the Universe. This parameterization is employed to analyze the universe's late-time behavior within the context of Qn gravity, where Q represents non-metricity. By using data from 57 Hubble data points, 1048 supernova (SNe) ...

This article examines anisotropic models to characterize compact stars (CSs) in the context of modified f(Q) gravity theory. To achieve this, we employ the linear functional form f(Q)=αQ+β. A physically meaningful metric potential grr is considered, and a quadratic form of anisotropy is utilized to solve the Einstein field equations in closed form. This class of solutions is then ...

The paper presents experimental results of concentration polarization and ionic conductivity of nanocomposite thermoelectric materials K0.01Cu1.94S , K0.02Cu1.94S , K0.03Cu1.94S . According to X-ray phase analysis, the synthesized samples are monoclinic jarleite Cu1.93÷1.97S with an admixture of oxygen oxide Cu2S and monoclinic chalcocyte. High values of total ionic conductivity ...

Relevance. In the context of reforming the socio-economic, political and cultural life of the country, the modernisation of secondary and higher schools, the change of the educational paradigm and teaching technologies, the problems of training teachers of a new development are of particular relevance. A special place in the training of qualified specialists is given to ...

This study presents theoretical and experimental investigations into the electron and hole color centers in BaFBr crystals, characterizing their electronic and optical properties. Stoichiometric BaFBr crystals grown by the Steber method were used in the experiments. Radiation defects in BaFBr crystals were created by irradiation with 147 MeV 84Kr ions with up to fluences of ...