Vitebsk State Technological University

The National Medical Insurance Service Platform APP is a convenient multi-functional platform developed by the National Healthcare Security Administration to facilitate Chinese citizens to inquire about and use Chinese medical insurance. With the full completion of China's national unified medical insurance information platform in 2022, the National Medical Insurance Service Platform APP has emerged as a core carrier for advancing the digital transformation of medical insurance services. This study takes the APP as the research object, adopts mixed research methods including case study and comparative analysis, and systematically delineates its development phases (start-up period: 2019-2021; development period: 2022-2023; upgrade period: 2024-present).

The basic laws of drying kinetics of thin flat materials during the falling drying rate are outlined. A method for calculating the average integral temperature of wet material on the basis of the relative temperature coefficient of drying is presented. Experimental data were processed based on the obtained values of the relative drying rate in the drying processes of ceramics, asbestos, and woolen fabric. A formula for calculating the average temperature is proposed. The solution of the differential equation of heat conduction for a wet plate in the process of drying (falling velocity period) with boundary conditions taking into account drying conditions is given. The calculation of the heat transfer coefficient is presented. Based on the study of many sources and processing of experimental results, formulas for calculating the coefficient of thermal conductivity of wet materials are presented. The analytical solution of the problem confirmed that during convective drying in low-intensity processes of the second drying period, the temperature change with a decrease in moisture content changes from an exponential dependence to a linear one, which is in full agreement with the experiment. A comparison of the temperature calculation by the experimental formula with the results of analytical solutions is presented. The analytical solution confirmed the laws established experimentally. Quite reliable coincidence of experimental and calculated analytical values of temperature for the period of falling speed drying of ceramics, asbestos, and fabric is obtained. The results of comparing experimental temperature values with calculated analytical values indicate a wider application of differential heat transfer equations for practical tasks of drying various wet materials.

The article discusses the features of the description of climatic phenomena in the Mogilev chronicle of T.R. Surta and Trubnitsky. The chronicle is a valuable historical source for reconstructing the climate of the second half of the XVII – XVIII centuries. It mentions, first of all, climatic disasters, which are reflected in records of abnormally cold winters and unstable weather in the spring and summer seasons. The chronicle pays great attention to the facts of famine, rising prices for bread and other food products, which was the result of low yields, caused by unfavorable climatic conditions. The authors of the Mogilev Chronicle also described cases of locust invasions, which have been observed again on Belarusian lands since the end of the XVII century and are a clear indicator of dry and warm weather.

Abstract A new highly effective sizing reagent based on grafted collagen copolymers has been proposed for cotton yarn. The copolymers were synthesized by reacting an aqueous solution of collagen with acrylic monomers—acrylic, matacrylic acids, and their amides in the presence of potassium persulfate. Based on Scanning electron microscopy ‐ Energy dispersive (SEM‐EDS) analysis data, the composition of the copolymers was determined. Unsaturated acids are more actively grafted onto collagen than their amides. When a polymer film is formed from a solution of a collagen copolymer with (meth)acrylic acid, microcracks appear on the surface of the sample; microcracks are absent in films of copolymers with (meth)acrylamide. Films of copolymers, especially methacrylamide, are quite flexible and contribute to a significant improvement in the properties of the yarn. The tensile strength of yarn sized with copolymers increases by 20%–65% compared to unsized yarn, and by 13%–38% compared to yarn sized with a starch solution. At the same time, the relative tensile elongation of the experimental yarn improves by 14%–58%, while this property of starch‐size yarn deteriorates by 14%–22% compared to unsized yarn. The complete removal of graft copolymers from the surface of the yarn in the process of biochemical desizing using the enzyme protease is shown. Highlights Graft copolymerization of (meth)acrylamide with collagen was carried out. Grafting is initiated by the interaction of collagen with potassium persulfate. The synthesized copolymers are effective sizing reagents for cotton yarn. The copolymer with poly(meth)acrylamide forms a flexible and stable film. The protease enzyme completely removes the size from the surface of the yarn.

We report on a detailed revision of the spectroscopic properties of Er3+ ions in the cubic sesquioxide host crystals R2O3 (R = Y, Lu and Sc). The 4f-4f transition probabilities are calculated by applying a modified Judd-Ofelt theory accounting for configuration interaction based on the measured absorption spectra. The stimulated-emission cross-sections for the 4I11/2 → 4I13/2 (at ∼2.8 µm) and 4I13/2 → 4I15/2 (at ∼1.6 µm) transitions of Er3+ ions are determined and the luminescence dynamics from the 4I11/2 and 4I13/2 manifolds are studied at different temperatures. It is found that the luminescence lifetime of the 4I11/2 state strongly depends on the host-forming R3+ cation even at low temperatures due to a non-negligible non-radiative multiphonon decay channel. Er:Y2O3 exhibits the lowest phonon energies and consequently the longest 4I11/2 luminescence lifetimes. A disagreement between the absorption and emission probabilities for the 4I15/2 ↔ 4I11/2 transition of Er3+ ions is observed at room temperature and explained considering the distribution of Er3+ ions over two non-equivalent crystallographic sites, C2 and C3i.

Digitalization of human resource management technologies represents the process of transformation of the traditional human resource management system through qualitative changes in its functions, achieved by combining information and communication technologies with the competencies of personnel of HR office, its processes and operations, allowing the use of personnel data in digital form, automate human resource management processes and operations that do not require managerial decisions, and introduce digital technologies in order to improve the working environment and working conditions, increase labor productivity, speed and quality of management decisions, which in general will have a positive impact on the effectiveness of the organization as a whole. These changes involve the transition of human resource management to the “HR 3.0” level and the application of the “HR Zero” concept the principle of organizing human resource management processes in the company, which allows automating key personnel procedures, delegating part of the functions of HR specialists to line managers and creating a flexible organizational environment. The purpose of the study was to establish the possibility of applying the concept of “HR Zero” in Belarusian organizations. To achieve this goal, the following tasks were solved: obtaining data and forming an empirical research base; analyzing changes in the skills of HR specialists; assessing the compliance of HR specialists’ competencies with labor market requirements; classifying competencies and analyzing the possibility of automating HR operations. During the research, the method of nonparametric analysis was used and Spearman’s rank correlation coefficient was calculated. The analysis made it possible to conclude that at this stage the concept of “HR Zero” in Belarusian organizations is applicable in fragments, for individual operations, this is due to the specifics of the work of HR specialists and the requirements of the Belarusian labor market, as well as the general level of digitalization of domestic organizations.

One of the directions for the production of Belarus innovative textile materials - production of heat & fireproof yarn and fabric. However, a number of problems arise during processing man-made heat-resistant fibers in spinning mills. These problems are associated with the high electrification of the fiber, which makes it difficult to process it, causes an increase in end-breakage and an increase in unevenness of semi-finished products. The purpose of these researches was the development of technological parameters of the card and draw frames in the spinning department, ensuring the production of high quality yarn. The experimentally investigations were carried out in the cotton spinning mill Gronitex (Belarus). To produce heat & fireproof yarn we used Arselon fibers, produced in OJSC SvetlogorskKhimvolokno (Belarus).