One dynamical input reconstruction problem: Tuning of solving algorithm via numerical experiments

The input reconstruction problem for a stochastic differential equation is investigated by means of the approach of the theory of dynamic inversion. The statement when the simultaneous reconstruction of disturbances in both the deterministic and stochastic terms of the equation is performed from the discrete information on several realizations of the stochastic process is considered. A finite-step software-oriented solving algorithm based on the method of auxiliary feedback controlled models is designed; an estimate for its convergence rate with respect to the number of measurable realizations is obtained. An empirical procedure for the automatic tuning of algorithm’s parameters in order to get best approximation results for a specific dynamical system is proposed. To optimize this time-taking process, the parallelization of calculations is applied. A model example illustrating the method proposed is given. © 2019 the Author(s), licensee AIMS Press.The authors would like to thank the generous support from the Krasovskii Institute of Mathematics and Mechanics, Yekaterinburg

Impedance spectroscopy of synthetic proustite at high pressures

The effect of high pressure (up to 40 GPa) and alternating electric field frequency (100 Hz-500 kHz) on the electrical properties of synthesized single-crystal proustite Ag3AsS3 is studied. The behavior of real and imaginary parts of impedance upon an increase in pressure confirms earlier data on the closing of valence and conduction zones, and on the material's transition to the metal state at ∼30 GPa. © 2013 Allerton Press, Inc

Study of the Effect of Radiation Dose Rate on the Stability of Various Organochlorine Pesticides

Abstract irradiated at dose of 10 kGy with dose rate varied from 8.3 ⋅ 10−3 up to 2.33 Gy/sec. It is found that the shape of the degradation degree relationship on dose rate is similar for different OCPs in polar and non-polar solvents (hexane, 2-propanol) and does not depend on the concentration of initial substance. The maximum of the OCP degradation degree is registered in the dose rate range of 0.23-0.43 Gy/sec. A lognormal distribution is considered as a function best fitting the experimental data. The OCP degradation mechanism could be explained by the ratio of active and recombined particles along the gradient of ionizing radiation intensity. Keywords: organochlorinated pesticide; irradiation, dose and dose rate of gammaradiation; radiation degradation; functional dependenc

Coping strategies and protective mechanisms of personality of students-teachers

The article attempts to investigate the relationship of coping strategies and protective mechanisms of the personality of student teachers with different levels of neurotization. It is noted that the presence of effective coping strategies and protective mechanisms of the personality is a condition for successful professional activity of future teachers, as well as somatic and psychological health. The article presents the theoretical and methodological basis of the study, the lack of sophistication and fuzziness of the concepts of psychological defense, neurotization and the state of neurotization, the methods of collecting empirical data are presented. An analysis of the data allowed us to see that more than half of the student teachers have psychosomatic or somatoform diseases against the background of an increased level of mental stress and neurotization. The research made it possible to identify a stable system of psychological defenses and non-adaptive coping strategies among psychology students with a high level of neurotization and substantiate the recommendation for the targeted formation of more mature and adequate adaptation strategies in student teachers of this group.В статье предпринята попытка исследовать взаимосвязь копинг-стратегий и защитных механизмов личности студентов-педагогов с разным уровнем невротизации. Отмечено, что наличие эффективных копинг-стратегий и защитных механизмов личности является условием успешной профессиональной деятельности будущих педагогов, а также соматического и психологического здоровья. В статье представлена теоретическая и методологическая основа исследования, отмечена недостаточность проработанности и размытость понятий психологическая защита, невротизация и состояние невротизации, представлены методики сбора эмпирических данных. Анализ данных позволил увидеть, что более чем у половины студентов-педагогов присутствуют психосоматические либо соматоформные заболевания на фоне повышенного уровня психического напряжения и невротизации. Исследование позволило выявить устойчивую систему психологических защит и неадаптивных копинг-стратегий у студентов-психологов с высоким уровнем невротизации и обосновать рекомендацию по целенаправленному формированию у студентов-педагогов данной группы более зрелых и адекватных стратегий адаптации

High pressures, low temperatures, and magnetic field effects on AgFeAsSe3 and AgFeSbSe3 properties

A procedure for synthesizing AgFeAsSe3 and AgFeSbSe3 is presented, and their electric and magnetic properties are investigated over a wide range of temperatures, pressures, and magnetic field variation. At 100-400K, the samples are characterized by semiconductor properties. Under pressures of ∼25 and ∼24 GPa, the electric properties of AgFeAsSe 3 and AgFeSbSe3 change greatly. © 2013 Allerton Press, Inc

The role of language representation of the time model in the process of meaning creation

The aim of the article is to demonstrate the language picture of the world, which owes its structural integrity to its relational framework. The archetype “time” is central to the Christian mythology, in fairy tales and other linguocultural artefacts. The thought-language essences representing the category TIME in the modern German language, connect different time modes (past, present, future), allowing to distinguish different worlds. The memory of the ways of the development of the human soul is concentrated in the

Spin-orbital Conversion of Bessel Light Beams By Liquid Crystal Elements

For the first time, the spin-orbital conversion of the linearly polarized Bessel beams in the process of their propagation in the electrically-controlled liquid crystal cell has been realized experimentally. Variations in the polarization, phase, and spatial structure of the beam have been analyzed. It has been shown that, when a Bessel beam is propagating along the liquid crystal director, the generated beam is orthogonally polarized, whereas the topological charge is varied by two unities. Keywords: Bessel light beams, spin-orbital conversion; liquid crystal

Functional properties of the Su(Hw) complex are determined by its regulatory environment and multiple interactions on the Su(Hw) protein platform

The Su(Hw) protein was first identified as a DNA-binding component of an insulator complex in Drosophila. Insulators are regulatory elements that can block the enhancer-promoter communication and exhibit boundary activity. Some insulator complexes contribute to the higher-order organization of chromatin in topologically associated domains that are fundamental elements of the eukaryotic genomic structure. The Su(Hw)-dependent protein complex is a unique model for studying the insulator, since its basic structural components affecting its activity are already known. However, the mechanisms involving this complex in various regulatory processes and the precise interaction between the components of the Su(Hw) insulators remain poorly understood. Our recent studies reveal the fine mechanism of formation and function of the Su(Hw) insulator. Our results provide, for the first time, an example of a high complexity of interactions between the insulator proteins that are required to form the (Su(Hw)/Mod(mdg4)-67.2/CP190) complex. All interactions between the proteins are to a greater or lesser extent redundant, which increases the reliability of the complex formation. We conclude that both association with CP190 and Mod(mdg4)-67.2 partners and the proper organization of the DNA binding site are essential for the efficient recruitment of the Su(Hw) complex to chromatin insulators. In this review, we demonstrate the role of multiple interactions between the major components of the Su(Hw) insulator complex (Su(Hw)/Mod(mdg4)-67.2/CP190) in its activity. It was shown that Su(Hw) may regulate the enhancer–promoter communication via the newly described insulator neutralization mechanism. Moreover, Su(Hw) participates in direct regulation of activity of vicinity promoters. Finally, we demonstrate the mechanism of organization of “insulator bodies” and suggest a model describing their role in proper binding of the Su(Hw) complex to chromatin