Modern Technologies of Working with Families of Children with Disabilities

AbstractThe authors research the problems of families having children with mental retardation and autism spectrum disorder (ADS), from the point of view of their socialization. The following key spheres of the socialization process are identified: activities, communication, self-awareness. In the authors’ opinion, work with this category of families should be conducted with consideration of these spheres

A Cross-Check of the Reflectance Models to Be Used in Interpretation of Observations of Regolith-Like Surfaces

Many current and proposed programs of satellite remote sensing of the Earth and other celestial bodies rely upon measurements of the intensity and polarization of light scattered by these bodies. These measurement data are interpreted by searching for the best fits to light-scattering characteristics precalculated with some theoretical models. For regolith-like surfaces, i.e., discrete densely packed random media, the light-scattering models are still under development and they work under different approaches. Here, to estimate the difference between the reflectance characteristics yielded by these procedures, we compare the results of simulations performed according to five frequently used approximate models of a semi-infinite particulate medium. Special attention is paid to taking into account the weak-localization effect. The models differ by the scattering matrixes of a volume element and the dependence of the imaginary part of the effective refractive index on the filling factor. The volume element is an individual spherical particle or a randomly oriented cluster of particles. The cases of modifying the scattering matrix by the static structure factor correction or by subtracting the contribution of the mean field are also considered. The values for the size parameter of particles or monomers in the clusters and the refractive index were assumed at 1.76 and 1.50 + i0.0001, respectively; and two values for the filling factor (defined as a volume fraction occupied by particles in the medium), 20 and 10%, were considered. Our analysis shows that the angular dependences of the intensity and the linear polarization degree obtained with the considered models are rather close to each other. Moreover, they agree with the corresponding characteristics for a large cloud of particles (N is equal to or exceeds 106) with the filling factor up to 20%, which were obtained by approximate methods but well follow the trends found in rigorous simulations for smaller ensembles of particles (Penttilä et al., J. Quant. Spectrosc. Radiat. Transfer, 2021, 262, 107524). Hence, these approximate models are equally acceptable to the interpretation of the results of observations

Hydrophilic molecularly imprinted phenol-amine-formaldehyde resins

Hydrophilic molecularly imprinted resins (MIR), which are produced using hydrophilic monomers such as phenols, aldehydes, melamine or urea, have recently attracted increasing attention for use in separation and preconcentration. Among their obvious advantages are good sorption capacity, high recovery and selectivity, as well as their reusability in aqueous solutions. In this work we applied the bulk molecular imprinting method to produce quercetin-imprinted phenol-amino-formaldehyde resin. For this purpose, phloroglucinol and melamine solutions were mixed with formaldehyde and then polyethylene glycol and quercetin (Qu) were added to the obtained solution as a porogen and a template, respectively. The mixture was stirred under heating, then left in the thermostat for a continuous time. The optimum ratio of phloroglucinol to melamine was 3:1. The average molecular mass of porogen (Mw) varied between 4000–10000 Da. The obtained MIR were eluted with ethanol-water mixture (4:1, v/v) in the Soxhlet extractor for 36 h to remove the template. The MIR were characterized by FTIR-spectroscopy, laser diffraction spectroscopy and differential thermal analysis. The maximum recovery and sorption capacity of MIR synthesized in the presence of a porogen with Mw 10000 were 47% and 4.7 μmol Qu/g, respectively. The maximum imprinting factor was 1.41. The sorption kinetics of quercetin by a non-imprinted resin (NIR) is best described by a pseudo-second-order model, while MIR has a mixed pseudo-first-second-order mechanism

Research of interferential factors of accounting and evaluation of cryptocurrency in the practical business model of a company

Cryptocurrency is a modern phenomenon of the digital economy, which is gradually becoming part of the business processes of companies of various profiles and economic sectors. The presence of unsettled issues at the legislative level of jurisdictions, as well as the ambiguity of approaches to the classification and assessment of cryptocurrency in financial reporting, gives rise to discussions of both practical and scientific nature. For trade organizations, the need to resolve this issue is evident, since already now businesses are considering the possibility of accepting payment for goods with some types of cryptocurrencies, as well as using cryptocurrencies to pay for the resources the company needs

New method of spectral analysis of human hair

A new optimal method of preparing one of the human biosubstrates (hair) to an arc atomic emission spectral analysis is proposed on the basis of complex physical and chemical studies. A new method of determining the content of macro- and micro-elements is developed. Following the developed technique we performed analysis of hairs in group of patients in order to diagnose diseases additionally, assess the habitat, and restore the element balance in the body. Comparing the content of elements in the human hair with reference values, it is possible to assess the degree of element imbalance in the body. This technique has passed metrological certification. Obtained by this method results of analysis of hair were used to identify clinical and laboratory correlations, to determine the elemental human status, and to diagnose various diseases

Educational technologies as a means of developing students' independence

The current stage of development of society is characterized by the development of scientific and technological progress, the emergence of various innovative processes that affect the course of development of all spheres of life, including higher education. With the emergence of a competency-based approach and a corresponding change in educational goals, higher education institutions, fulfilling the requirements of the Federal state educational standards, should use innovative educational technologies in the preparation of students to form their professional competence. The purpose of the article is to consider the experience of implementing educational technologies as a tool for developing students' independence. The independence of the student is an integral part of the development of his competence. The article presents an examination of the concepts of “independence” and “educational technology” from various points of view. The dependence of independence on the use of innovative educational technologies in the educational process is traced. The stages of the process of organizing students' independent work using innovative educational technologies are highlighted. The presented study on identifying students' level of independence when studying the discipline “Teaching Technologies of the Teachers of the Past” allows us to conclude that students are more successful with the active implementation of educational technologies, since they make the process more active and creative, make the interaction process more efficient. The study was conducted over two years (in 2018 and 2019). We checked the level of independence of students before the introduction of innovative technologies in the study of the discipline "Technology of teaching teachers of the past" and after. The more often educational technologies are used in the educational process, the more students get used to independent work, the better it becomes. The use of educational technologies allows the formation of a highly educated competent specialist who independently and creatively solves professional problems

Comparative characteristic of Bi- and La- doped (Ca/Sr)MoO4 -based materials with a defect scheelite-type structure

CaMoO4- and SrMoO4-based scheelite-type phases are noteworthy functional materials, whose properties strongly correlate with their structure. This work is devoted to La- or Bi-doped scheelite-type molybdates. The purpose of the present study is to quantify the effect of isolated electron pairs of bismuth on the distortion of the structure and related properties. Conventional solid-state technology was used for the synthesis of (Ca/Sr)1–3xLa2xФxMoO4 and Sr1–3xBi2xФxMoO4, (0.025≤ x ≤ 0.275). The structure was investigated by X-ray powder diffraction and Raman spectroscopy. Rates of structure distortion were characterised by the analysis of the autocorrelation function (AAF) of Raman spectra. Energy gaps were calculated by the Kubelka-Munk method. The conductivity was studied with a.c. impedance spectroscopy. For (Ca/Sr)1−3x(Bi/La)2xФxMoO4 series 0.025 ≤ x ≤ 0.15 compositions show a basic defect scheelite structure, while 0.15 x ≤ 0.225 compositions of Bi-doped samples exhibit tetragonal supercells. The chemical compression of unit cell is more evident in the case of Bi-doping, indicating the preferred orientation of the isolated electron pairs. The distortion of MoO4 polyhedra showed by AAF was more significant for Sr1−3xBi2xФxMoO4 than for Sr1−3xLa2xФxMoO4, the Δcorr parameters for Bi-doped compositions were almost double in comparison with La-doped one in the range of 50–600 cm–1 of the Raman shift. The «critical» x = 0.15 point was also clearly indicated by Δcorr parameter. The AAF of the Raman spectra of solid oxides was shown to be a good tool for prediction of properties and points of phase transitions in solid oxides

Методика оценки премии в сделках слияния и поглощения на развивающихся рынках для частных компаний

Introduction. In the context of globalization of economies mergers and acquisitions (in short M&A) are becoming increasingly important in business, as a strategic development of companies. M&A deals, as a rule, are assessed for their efficiency for acquiring company and/or for target-company. There are a lot of papers and empirical studies on this subject. However, most of them concern public companies with shares listed on the stock exchange.Moreover, in the last decade M&A deals were most typical for private owned companies operating in an emerging capital market. Due to the imperfections of an emerging capital market, lack of available and reliable information about private target-companies, investors need a methodology able to take into account these features of the market, to more reasonably calculate the transaction price and the premium in its structure.Topic. As the object of the study we analyse mergers and acquisitions in the countries of the BRICS group (Brazil, Russia, India, China, South Africa) for 2005–2015.Purpose. The purpose of this study is development of methodological apparatus for assessment of premiums in M&A transactions for private companies in emerging capital markets.Methods. As research methods were used general scientific methods (analysis, synthesis, comparison, graphics), and special ones (statistical analysis methods, the coefficient method).Results. In this article we present the author’s approach to the assessment of fair market value and premiums in M&A transactions with private companies in emerging capital markets. We also conducted testing of proposed methodology.Implementation. The proposed methodology can be used by both external and internal analysts to calculate and justify the premium in deals with private companies in emerging capital markets.Введение. В условиях глобализации экономик сделки слияния и поглощения (mergers and acquisitions, M&A) приобретают все большую актуальность в бизнесе в качестве стратегического развития компаний. Сделки M&A, как правило, оцениваются на предмет их эффективности для компаний-покупателей и/или компанийцелей. Существует достаточно много работ и эмпирических исследований, посвященных данному направлению. Однако большая их часть осуществлена для публичных компаний, имеющих акции, котирующиеся на бирже. При этом в последние десятилетие сделки M&A более актуальны для частных компаний, функционирующих на развивающемся рынке капитала. В силу несовершенства развивающегося рынка капитала, отсутствия доступной и достоверной информации о частной компании-цели инвесторам требуется методика, способная учесть данные особенности рынка, чтобы более обоснованно рассчитать цену сделки и премию в ее структуре.Предмет. В качестве объекта исследования выступили сделки слияний и поглощений в странах группы БРИКС (Бразилия, Россия, Индия, Китай, ЮАР) за 2005–2015 гг.Цель. В этой связи цель работы заключается в разработке методологического аппарата по оценке премий в сделках M&A для частных компаний развивающихся рынков капитала. Методы. В качестве методов исследования использовались как общенаучные методы исследования (анализ, синтез, сравнение, графический), так и специальные (статистические методы анализа, коэффициентный метод).Результаты. В данной статье предложен авторский подход к оценке справедливой рыночной стоимости и премии в сделках M&A с частными компаниями на развивающихся рынках капитала, проведена апробация методики.Область применения результатов. Предложенная методика может быть использована как внешними, так и внутренними аналитиками для расчета и обоснования премии в сделках с частными компаниями на развивающихся рынках капитала

Prospects for the peat using as the basis of the soil-like substrate in mini-ecosystems modelling

Global urbanization is causing a constant decline in arable land as cities and associated industrial zones are "attacking" adjacent agricultural areas. One of the promising ways to solve the problem of increasing food production for the constantly growing population of the planet against the background of rapidly decreasing land resources is the development of fundamentally new alternative methods for the production of crop products, including in greenhouses. The fundamental basis for technological optimization of plant cultivation parameters and the output of the productive process of a particular crop to the maximum of its genetic capacities can be the development of artificial mini-ecosystems based on the reproduction of nature-like processes, implying the balance and combination in one volume of the processes of plant production and reduction of organic waste, initiated directly in the zone of the rhizosphere of plants due to the introduction of technological earthworms into the reduction zone. According to the results of model studies presented in this article, peat is an acceptable basis for the substrate of the root block of a mini-ecosystem, and the introduction of earthworms Eisenia fetida Sav. into the reduction zone does not have a negative effect on lettuce plants, provided that it is used as an energy substrate for cattle manure worms in quantities not exceeding 10 - 20% of the total volume of the substrate