https://dspace.chmnu.edu.ua/jspui/handle/123456789/803 Sat, 07 Nov 2026 02:17:21 GMT 2026-11-07T02:17:21Z http://dspace.chmnu.edu.ua:80/jspui/retrieve/0918f5c2-c20f-4fbf-ba08-2f575d1934ca/БД.png https://dspace.chmnu.edu.ua/jspui/handle/123456789/803 https://dspace.chmnu.edu.ua/jspui/handle/123456789/3401 Title: Revealing the influence of methods for producing polymer micro- and nanocomposites with different polymer matrices on their thermal conductivity properties Authors: Fialko, N.; Dinzhos, R.; Sherenkovskii, J.; Meranova, N.; Korzhyk, V.; Lazarenko, M.; Ryzhkov, S.; Serhiienko, R. Abstract: The thermal conductivity properties of polymer micro- and nanocomposites depending on different production methods have been investigated in this study. The task addressed relates to the synthesis of such composites with a wide range of thermal conductivity properties, the application of which is promising in various fields of science and technology. This task has been solved by performing a set of systematic studies and by conducting corresponding comparative analysis of the results for a wide range of micro- and nanocomposites obtained by different methods. A cycle of experimental studies produced results for composites based on polyvinyl chloride, polyethylene, polypropylene, polycarbonate, and polyamide 6, when filled with carbon nanotubes and microparticles of aluminum and carbon black. When making composites, two methods were used, the first of which is based on mixing components in dry form, the second – in the polymer melt. The dependence of the thermal conductivity properties of composites based on polyvinyl chloride on their production methods was analyzed. It is shown that when using the first of the above methods, relatively low-thermal-conductivity modifications of the studied composites occur, and when using the second method, relatively high values of their thermal conductivity occur. These patterns are explained by the fact that when using the second method, the efficiency of formation of percolation clusters and networks of filler particles is increased, and therefore the thermal conductivity of materials increases. The influence of methods for obtaining composites with different polymer matrices on their thermal conductivity properties was analyzed. Promising areas of application of the proposed composites are power engineering, electric transport, electronics, cooling systems, etc. Their practical use focuses on the latest technologies and e ui ment. Description: Fialko, N., Dinzhos, R., Sherenkovskii, J., Meranova, N., Korzhyk, V., Lazarenko, … Serhiienko, R. (2026). Revealing the influence of methods for producing polymer micro- and nanocomposites with different polymer matrices on their thermal conductivity properties. Eastern-European Journal of Enterprise Technologies, 4 (2), 34–41. DOI : 10.15587/1729-4061.2026.368703 Thu, 01 Jan 2026 00:00:00 GMT https://dspace.chmnu.edu.ua/jspui/handle/123456789/3401 2026-01-01T00:00:00Z https://dspace.chmnu.edu.ua/jspui/handle/123456789/3400 Title: Construction and hardware validation of a transition-aware quantum kernel for pre-hypotensive PPG and ECG Authors: Darnapuk, Y.; Kravchenko, P.; Chuiko, G. Abstract: Full quantum-kernel estimation requires a quadratic number of pairwise fidelity evaluations, which limits hardware studies on public cloud QPUs. We constructed paired stable and pre-hypotensive observations from VitalDB and represented each observation by its current physiological state and the change across two adjacent 60-s windows. Development-only analysis selected a 30-s prediction gap and four PPG/ECG-derived features: PPG amplitude, PPG peak width at half prominence, pulse interval, and pulse-arrival time. The Hemodynamic Transition Quantum Kernel (HTQK) encodes four state values with Ry[jls-end-space/]rotations and their four corresponding changes with Rz[jls-end-space/]rotations on the same four qubits, separated by an internal nearest-neighbour CX bridge. This placement avoids the cancellation that affected a fixed terminal entangler in the original compute–uncompute circuit. The locked kernel was then validated through exact, repeated finite-shot, backend-derived-noise, and physical-QPU stages. Physical validation was restricted to a deterministically selected subset of 16 development and eight holdout observations. The entangled kernel achieved holdout balanced accuracy of 0.623 (95% bootstrap CI 0.576–0.674). On ibm_marrakesh, 252 circuits used 148 QPU s. Relative Frobenius distortion from the exact training kernel was 0.0420 and centred kernel alignment was 0.9992. The method evaluates resource-efficient kernel preservation rather than quantum computational advantage. This is an open access article under the CC BY license. http://creativecommons.org/licenses/by/4.0/ Description: Darnapuk, Y., Kravchenko, P., & Chuiko, G. (2026). Construction and hardware validation of a transition-aware quantum kernel for pre-hypotensive PPG and ECG. MethodsX, 17, art. no. 104192. DOI : 10.1016/j.mex.2026.104192 Thu, 01 Jan 2026 00:00:00 GMT https://dspace.chmnu.edu.ua/jspui/handle/123456789/3400 2026-01-01T00:00:00Z https://dspace.chmnu.edu.ua/jspui/handle/123456789/3397 Title: Gender characteristics of the stress resistance manifestation as qualities of emotional intelligence Authors: Koshkalda, I.; Tussupova, L.; El Emary, I.M.M.; Pilova, K.; Derpak, O.,; Opanasenko, L. Abstract: The need to study emotional burnout in the professional sphere is related to the determination of the relationship between the features of the course of emotional and mental burnout and the gender characteristics of the individual. Carried out a theoretical analysis of the essence of the concept of stress and the relationship between stress and personality traits, the concept of professional stress, mental exhaustion and emotional burnout, gender characteristics, the phenomenological aspect of stress resistance, individualpersonal factors and gender characteristics of stress. The specifics of the manifestation of stress resistance, the relationship between personality traits and professional stress, depending on gender have been investigated. The Program for the formation of stress resistance in university teaching staff in order to prevent conflicts in professional activities have been formed. The gender characteristics of the stress resistance manifestation as qualities of emotional intelligence have been established. Description: Koshkalda, I., Tussupova, L., El Emary, IMM., Pilova, K., Derpak, O., & Opanasenko, L. (2026). Gender characteristics of the stress resistance manifestation as qualities of emotional intelligence. International journal for quality research, 20 (3), 671–690. DOI: 10.24874/IJQR20.03-03 Thu, 01 Jan 2026 00:00:00 GMT https://dspace.chmnu.edu.ua/jspui/handle/123456789/3397 2026-01-01T00:00:00Z https://dspace.chmnu.edu.ua/jspui/handle/123456789/3396 Title: Digital resources for enhancing students' pragmatic competence in foreign language learning Authors: Yakymenko, P.; Orlova, N.; Ketsyk-Zinchenko, U.; Ababilova, N.; Chaika, O. Abstract: The content and components of pragmatic competence of students when learning a foreign language are revealed. The content of sociopragmatic and pragmalinguistic competence is substantiated. The main tasks of digital resources that ensure the development of pragmatic competence are identified in terms of content. The results of the ascertaining stage of the experiment showed an insufficient level of formation of pragmatic competence of students, which made it possible to establish factors that influence the formation and development of pragmatic competence of students, outline a range of practical and theoretical problems, develop a system, determine and substantiate pedagogical conditions, and implement a special course. After the formative stage of the experiment, the indicators of the high level of formation of pragmatic competence of students using digital resources when learning a foreign language significantly increased in EG students; respectively, the indicators of the low level significantly decreased. In CG, these changes are not significant. Thus, the results of the formative stage of the experiment confirmed the effectiveness of the developed system for the formation of pragmatic competence using digital resources when learning a foreign language, the proposed and substantiated p edagogical conditions, and the developed and implemented special course. Description: Yakymenko, P., Orlova, N., Ketsyk-Zinchenko, U., Ababilova, N., & Chaika, O. (2026). Digital resources for enhancing students' pragmatic competence in foreign language learning. EDUWEB-Revista de tecnologia de informacion y comunicacion en educacion, 20 (3), 276–295. DOI: 10.46502/issn.1856-7576/2026.20.03.16 Thu, 01 Jan 2026 00:00:00 GMT https://dspace.chmnu.edu.ua/jspui/handle/123456789/3396 2026-01-01T00:00:00Z