Proton configurations in the hydrogen bonds of KH2PO4 as seen by resonant x-ray diffraction

KH2PO4 (KDP) belongs to the class of hydrogen-bonded ferroelectrics, whose paraelectric to ferroelectric phase transition is driven by the ordering of the protons in the hydrogen bonds. We demonstrate that forbidden reflections of KDP, when measured at an x-ray absorption edge, are highly sensitive to the asymmetry of proton configurations. The change of average symmetry caused by the "freezing" of the protons during the phase transition is clearly evidenced. In the paraelectric phase, we identify in the resonant spectra of the forbidden reflections a contribution related to the transient proton configurations in the hydrogen bonds, which violates the high average symmetry of the sites of the resonant atoms. The analysis of the temperature dependence reveals a change of relative probabilities of the different proton configurations. They follow the Arrhenius law, and the activation energies of polar and Slater configurations are 18.6 and 7.3 meV, respectively

An Efficient Numerical Technique for Solving the Inverse Gravity Problem of Finding a Lateral Density

The main goal of our paper is to construct a technique for the gravity inversion problem of finding a variable density in a horizontal layer on the basis of gravitational data. This technique consists of two steps: extracting the gravitational field and solving the linear integral equation of the density. After discretization and approximation of integral operator, this problem is reduced to solving large systems of linear algebraic equations. To solve these systems, we proposed a memory-efficient algorithm based on the iterative method of minimal residuals. The idea of memory optimization is based on exploiting the block-Toeplitz structure of coefficients matrix. The algorithms were parallelized and implemented using the Uran and UrFU supercomputers. A model problem with synthetic gravitational data was solved

Preface of “the second symposium on Advanced Methods and Information Technologies Applications (AMITA)”

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The Discourse Personality of Politician Sergey Mikheyev with Regards to his Speech Behaviour

This paper presents the results of research into the linguistic personality of politician Sergey Mikheyev when viewed as a discourse personality. Special consideration has been given to the speech behaviour characteristic of a discourse personality. The paper presents the results of the cognitive-discursive and linguo-rhetorical description of a discourse personality.The relevance of this research is based on the growing interest for linguistic personality typology with regards to discourse (K. F. Sedov, V. I. Karasik, N. D. Golev, A. V. Bolotnov, et al.). A mixed type of political discourse that actualises both the personal and status factors of its formation was chosen as the object of analysis. The research focuses on semantic dominants and semantic constructs of the discourse behaviour of the Russian politician Sergey Mikheyev, as well as on the cognitive and linguo-rhetorical mechanisms of the interpretation of speech acts when viewed as elements of individual discourse behaviour. We define the linguo-rhetorical competence of the politician’s personality. The study is novel in that it identifies semantic dominants and semantic constructs found in Mikheyev’s discourse and uses an integrative approach to analysis (cognitive-discursive and linguo-rhetorical). It is proven that semantic dominants, constructs, and presuppositions manifest inventive mechanisms of individual discourse activity. We suggest defining the status of Mikheyev’s discourse personality as a mixed type of elitist linguistic personality that is pragmatically oriented. We prove that the discourse personality of Sergey Mikheyev is a prototype of a future successful politician’s linguistic personality. The paper presents the author’s original communicative competence system of S. Mikheyev’s discourse personality

Design and implementation of adaptive technology for teaching mathematics to school children based on integrated diagnostic approach to subject preparation and competence development

The development of school teaching  systems to enable effective adaptive communication of information requires specific pedagogical solutions to several important theoretical and methodological problems .These include 1) the discernment of basic characteristics needed to diagnose and improve the quality of subject preparation for schoolchildren, 2) clarifying the role of the teacher in the structure of adaptive learning  process, and  3) finding ways to integrate adaptive content into the framework of courses on mathematics. The purpose of our study was to determine theoretical and methodological foundations of teaching mathematics to schoolchildren taking into account their level of ability with the consequent development of appropriate adaptive content. The basic characteristics that underpin the concept of adaptive learning which contributes to both individual profiles of student ability to learn and subsequent success outcomes are: proficiency, motivation to learn and level of mathematical knowledge. The evaluation of individual profile structure of schoolchildren determines the choice of methodologies for presentation of adaptive content in ways allowing development and motivation. The system of educational process management developed in this way includes both content-methodical and procedural-technological components. This makes it possible to automatically evaluate the level of each students' mathematical training (knowledge, motivation, development) and to ensure continuous improvement. This system can also be used by secondary teachers of mathematics as a part of extracurricular activities, or as a distance learning support. In addition, the recommendations for structuring multi-level problem material can be used by mathematics teachers to self-construct adaptive sets tasks at various stages of teaching mathematics. As a result, students have the opportunity to improve their own profile of learning success, particularly by solving a chain of tasks

Leading signs of integrative interaction between education and industry: experience the mining schools of the Urals

The article presents an attempt at reconstructing the experience of the mining schools in terms of integration of their activities with the enterprises of the mining industry. The paper identifies the main characteristics of the integrative interaction between the educational and industrial components of training specialists for the mining industry in the UralsВ статье осуществлена попытка реконструкции опыта горнозаводских школ в части интеграции их деятельности с предприятиями горнорудной промышленности. В работе определены основные признаки интегративного взаимодействия между образовательными и производственными составляющими подготовки специалистов для горнорудной промышленности Урал

High-resolution phase based method for FMCW short range radars

The paper deals with the problem of the using phase-based methods for frequency estimation in the frequency modulated continuum waves (FMCW) short-range radars in the case of high-resolution frequency estimation requirements. The equation is considered for frequency estimation by the least-square method of approximating the phase-to-time relation of the beat signal correlation function in the case of several significant components in the signal (such as valuable and interference signal-like tones). Solution is proposed for the equations by using the parametric (or subspace) decomposition of beat signals (such as eigenvector decomposition, EV). The numerical investigation shows that the bias of the frequency estimations by the proposed solution of the mentioned equation above has statistical properties similar to the method of estimation of signal parameters via rotational invariance techniques (ESPRIT). However, the proposed method does not require the double decompositions, and frequency of each eigenvector can be estimated separately. It is also shown that in the case of the unknown number of signal components the proposed method has the higher statistical properties than for such popular technique as the multiple signal classification method (MUSIC). © 2020 American Institute of Physics Inc.. All rights reserved.The work was supported by Act 211 Government of the Russian Federation, contract N 02.A03.21.0006

Image of Your Own Body, Sense of Isolation and Quality of Life in Patients with Gynecological Cancers

Aim: to study mental state of gynecological oncological patients, their attitude to the existing disease and quality of life.Material and methods. The study was conducted on the basis of the City Clinical Hospital No. 1 of Novosibirsk. The main group (17women aged 29 to 60 years) included patients with ovarian cancer, cancer of the external female genital organs, and uterine cancer; the comparison group was comprised of 20 people aged 29 to 63 years without a history of cancer.Results. In gynecological oncological patients, dissatisfaction with their own bodies is more pronounced; they perceive their body distorted, which may be due to the characteristics of the disease and the specifics of treatment. Patients with gynecological cancers have a more pronounced subjective feeling of loneliness, but it is at the upper limit of the norm, which may mean the fact that these patients turn in upon themselves, in their experiences, as well as the feeling of something lost in their inner world. Patients with gynecological cancers showed an average level of quality of life and low indicators of the mental component of health, which indicates reduced functioning and a significant effect of the patient’s physical and emotional state on daily activities.Conclusion. The mental state of the cancer patient, his ability to withstand stress, his attitude to the existing disease affect the treatment process and further quality of life

Properties of the "Orgamax" osteoplastic material made of a demineralized allograft bone

We investigated properties of the “Orgamax” osteoplastic material, which was produced from a demineralized bone, in the treatment of extensive caries, in particular chronic pulpitis of the permanent teeth with unformed roots in children. The “Orgamax” osteoplastic material consists of demineralized bone chips, a collagen additive, and antibiotics. The surface morphology of the “Orgamax” osteoplastic materialis macroporous, with the maximum pore size of 250 [mu]m, whereas the surface morphology of the major component of “Orgamax”, demineralized bone chips, is microporous, with a pore size of 10-20 [mu]m. Material “Orgamax” is used in the treatment of complicated caries, particularly chronic pulpitis of permanent teeth with unformed roots in children. “Orgamax” filling a formed cavity exhibits antimicrobial properties, eliminates inflammation in the dental pulp, and, due to its osteoconductive and osteoinductive properties, undergoes gradual resorption, stimulates regeneration, and provides replacement of the defect with newly formed tissue. The dental pulp viability is completely restored, which ensures the complete formation of tooth roots with root apex closure in the long-term period