01.00.00 Physical-mathematical sciences
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SPECTRA OF PREFRACTAL GRAPHS WITH THE PRIMING CYCLES, KEEPING EDGES OF OLD CONTIGUITY
01.00.00 Physical-mathematical sciences
DescriptionThe problems of finding of characteristic polynomials and spectra prefractal graphs with the priming cycles are investigated, the contiguity of old edges in the trajectory isn't broken. The recurrent formula is received
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A NEW APPROACH TO THE STUDY OF THE STABILITY OF CONCLUSIONS IN THE MATHEMATICAL MODELS
01.00.00 Physical-mathematical sciences
DescriptionWe have proposed the general scheme for studying the stability of the conclusions obtained by mathematical methods and models regarding tolerance deviations of the original data and background models. The concrete problems of stability are discussed: towards a change of data, its size and distributions, to allowable transformations measurement scales, to the temporal characteristics (time of start of the project, the planning horizon). Reducing the uncertainty can be conducted by changing the type of data, i.e. with the aid of the transition to non-numerical data. The models of concrete management processes of industrial organizations are considered on the examples of stability characteristics of investment projects to change the discount factors and in models of inventory management to change in the coefficients of the model and batch size production
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STUDY OF NANOCOMPOSITE STRUCTURE OF MATERIALS WITH X-RAY METHOD
01.00.00 Physical-mathematical sciences
DescriptionIn the present work description of the structure of atomic and nanocomposite (NC) levels of crystalline materials which differs from the previously accepted is done
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01.00.00 Physical-mathematical sciences
DescriptionIn the article, the technique of experimental determination of dielectric permeability and a tangent of an angle of dielectric losses of mixed seeds of agro cultures – air by means of measurement of the electric capacity of the cell of a flat condenser which has been densely filled with seeds in a range of frequencies of 1 kHz – 1 MHz is presented
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CASCADE PHOTON EMISSION IN LUMINOPHORES AND STEREOATOMIC ANALYSIS
01.00.00 Physical-mathematical sciences
DescriptionThe relation between degree of sphericity of the Voronoi-Dirichlet’s polyhedron G3 and the ability to demonstrate the first stage of the cascade luminescence of Pr3+ for several crystalline fluorides and oxygen-containing compounds was revealed. It was found that LaZr3F15 and BaSiF6, with energy level 1S0 located below the bottom of 5d-band, which demonstrate cascade luminescence have the smallest value of G3 among investigated compounds
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CONCENTRATION DEPENDENCE OF INTENSITY PARAMETERS OF NEODYMIUM IONS IN STRONTIUM AND LED TUNGSTATES
01.00.00 Physical-mathematical sciences
DescriptionIn the article, the concentration rows of monocrystal strontium and led tungstates doped with neodymium are treated. Judd-Ofelt intensity parameters are calculated
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INTENSITY PARAMETERS OF NEODYMIUM IONS IN STRONTIUM TUNGSTATE CRYSTAL
01.00.00 Physical-mathematical sciences
DescriptionIntensity parameters of neodymium ions in doped SrWO4 monocrystals, grown by modified Czochralski method, are calculated. Changes in the values of these parameters when replacing the tungsten atoms W6+ atoms of molybdenum Мo6+ in the matrices SrMeO4 with the scheelite structure due to less screening of the nucleus Мo6+ compared with W6+ are shown
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01.00.00 Physical-mathematical sciences
DescriptionThe article considers measuring scales as a tool for creating formal models of real objects and a tool for increasing the degree of formalization of these models to a level sufficient to implement them on computers. It also describes the different types of measuring scales, allowing to create models of varying degrees of formalization; lists the types of transformation valid during the processing of empirical data obtained with scales of different types; develops the task of metriza-tion of the scales, i.e. conversion to the most formalized mind; it proposes 7 ways of metrization of all the types of scales, providing a joint comparable quantitative processing of heterogeneous factors measured in different units of measure due to the conversion of all scales to one universal unit of measurement in which the measurement number of information is selected. All of these methods of metrization have been implemented in the system-cognitive analysis and in the Eidos intellectual system
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MATHEMATICAL MODELING OF FINANCIAL PYRAMID SCHEME. PART 2. DISCRETE MODELS
01.00.00 Physical-mathematical sciences
DescriptionThis article analyzes the changes in the number of cases of various clients of the pyramid and the establishment of the basic rules of the pyramid schemes based on discrete models. The article is also a continuation of previous work [1], which had formulas to simulate the amount collected by the pyramid scheme
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CHAOS AND PHASE TRANSITION IN ATOMIC NUCLEI
01.00.00 Physical-mathematical sciences
DescriptionThe model of chaotic behavior of nucleons in nuclei, based on the model of nuclear interactions and the Fermi-Dirac statistics is discussed