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The microwave properties of epoxy composites filled with 30 wt.% of BaFe12–xGaxO19 (0.1 ≤ x ≤ 1.2) and with 1 wt.% of multi-walled carbon nanotubes (CNTs) were investigated in the frequency range 36–55 GHz. A sufficient increase in the microwave shielding efficiency was found for ternary 1 wt.%CNT/30 wt.% BaFe12–xGaxO19/epoxy composites compared with binary 1% CNT/epoxy and 30 wt.% BaFe12–xGaxO19/epoxy due to the complementary contributions of dielectric and magnetic losses. Thus, the addition of only 1 wt.% of CNTs along with 30 wt.% of barium hexaferrite into epoxy resin increased the frequency range where electromagnetic radiation is intensely attenuated. A correlation between the cation Ga3+ concentration in the BaFe12–xGaxO19 filler and amplitude–frequency characteristics of the natural ferromagnetic resonance (NFMR) in 1 wt.%CNT/30 wt.% BaFe12–xGaxO19/epoxy composites was determined. Higher values of the resonance frequency fres (51.8–52.4 GHz) and weaker dependence of fres on the Ga3+ concentration were observed compared with pressed polycrystalline BaFe12–xGaxO19 (fres = 49.6–50.4 GHz). An increase in the NFMR amplitude on the applied magnetic field for both random and aligned 1 wt.% CNT/30 wt.% BaFe12–xGaxO19/epoxy composites was found. The frequency of NFMR was approximately constant in the range of the applied magnetic field, H = 0–5 kOe, for the random 1 wt.% CNT/30 wt.% BaFe12–xGaxO19/epoxy composite, and it slightly increased for the aligned 1 wt.% CNT/30 wt.% BaFe12–xGaxO19/epoxy composite.

The paper describes preparation features of functional composites based on ferrites, such as “Ba(Fe1−xGax)12O19/epoxy,” and the results of studying their systems; namely, the correlation between structure, magnetic properties and electromagnetic absorption characteristics. We demonstrated the strong mutual influence of the chemical compositions of magnetic fillers (Ba(Fe1−xGax)12O19 0.01 < x < 0.1 solid solutions), and the main magnetic (coercivity, magnetization, anisotropy field and the first anisotropy constant) and microwave (resonant frequency and amplitude) characteristics of functional composites with 30 wt.% of hexaferrite. The paper presents a correlation between the chemical compositions of composites and amplitude–frequency characteristics. Increase of Ga-content from x = 0 to 0.1 in Ba(Fe1−xGax)12O19/epoxy composites leads to increase of the resonant frequency from 51 to 54 GHz and absorption amplitude from −1.5 to −10.5 dB/mm. The ability to control the electromagnetic properties in these types of composites opens great prospects for their practical applications due to high absorption efficiency, and lower cost in comparison with pure ceramics oxides.

Graphite nanoplatelets (GNPs)—the segregated ultra-high molecular weight polyethylene (UHMWPE)-based composites with hybrid filler—decorated with Fe3O4 were developed. Using X-ray diffraction and scanning electron microscopy, it was shown that the decorated component has the shape of separate granules, or their clusters were distributed evenly over the GNPs surface. The individual Fe3O4 nanoparticles are predominantly rounded, with diameters of approximately 20–60 nm. The use of GNPs/Fe3O4 as a filler leads to significant decreases in the percolation limit φc, 0.97 vol% vs. 0.56 vol% for GNPs/UHMWPE- and (GNPs/Fe3O4)/UHMWPE segregated composite material (SCM), respectively. Modification of the GNP surface with Fe3O4 leads to an essential improvement in the electromagnetic interference shielding due to enhanced microwave absorption in the 26–37 GHz frequency range in its turn by abundant surface functional groups and lattice defects of GNPs/Fe3O4 nanoparticles.

The article analyzes the experience of implementing forms and methods of development of digital competence of educators in distance education using Google Workspace for Education cloud services, based on real experience of teacher training at the university. This article discusses the concepts of competence, digital competence and distance education. The experience of the Department of Open Educational Systems and Information and Communication Technologies of the Central Institute of Postgraduate Education (Kyiv, Ukraine) in the organization of distance learning in postgraduate education is revealed, the results of research on the impact of distance technologies on the quality of education are presented. Specificity of digital competence development among pedagogical staff in the process of organizing distance education on the basis of Google Workspace for Education cloud services is determined. The article also provides an overview of the opportunities provided by digital tools and cloud services in Google Workspace for Education for distance education and highlights the effective forms and methods of developing digital competence in distance learning on the example of advanced training of university teachers. The article presents a description of effective forms of teacher training in the educational environment of Google Class, analysis of learning outcomes and identifies the benefits of joint activities of participants in the learning process. The article features the results of research on the development of teachers’ digital competence measured on the basis of selected criteria for assessing the development of digital competence of research and teaching staff. The article highlights the promising trends in the development of digital competence of pedagogical staff in terms of distance education.

Formation of the information society as a new form of social reality functioning by means of multi-indicators - symbols - signals - stimulus – codes stimulates the ever-increasing intellectualization of all types of social practices, including education. It undergoes the process of transformation into a theory and practice of continuous professional development of cognitive workers capable of self-processing information and acquiring new knowledge based on using IT. The main areas of reforming education in Ukraine is to bring its essence and content into line with the contemporary development world trends, caused by civilizational changes and challenges, as well as its ability to provide adequate responses to them. Based on a synthesis of scientific literature on the educational development in the information society and analysis of the current trends in the development of the postgraduate education system in Ukraine, the article provides SWOT analysis of the development of this educational branch in the conditions of its informatization, individualization and integration into the European information educational space. The purpose of the article is to identify the problems, advantages, threats and prospects of informatization of the national postgraduate education and transforming it into an open system. The study concluded that the effective functioning of postgraduate education in the open information educational space is ensured by its variability, flexibility, and the ability to create optimal conditions for the individualization of the educational process based on a combination of formal, informal and informal education. An open university of postgraduate education is proved to provide such conditions most optimally. The perspective directions and development goals of the national system of open postgraduate pedagogical education in Ukraine are determined. The following model of this process is introduced: \"civilization change - educational problem - search for ways and development of a program for its solution - displaying them in the content and forms PPE - accreditation and implementation of the corresponding educational programs varied in diversity of their content and profiles - monitoring the quality of their implementation.\"

In the context of reforming education in Ukraine, electronic systems for managing the learning process and web resources of educational disciplines as components of these systems are widely introduced into the educational process. The need to improve the quality of education and the effectiveness of monitoring the knowledge of applicants for higher education have led to an increase of interest in automated knowledge assessment. Laboratory classes play a leading role in developing skills and application of the acquired knowledge. The effectiveness of using computer technology in laboratory classes depends on the qualitative methodology for conducting them through the academic discipline web resource tools and the automated evaluation of learners’ knowledge and acquired skills. The paper justifies the relevance of automated assessment of students’ knowledge and skills for higher education, describes the methodology for conducting laboratory classes using the web resource tools of the academic discipline and the technology of automated knowledge and skills assessment based on the results of students’ laboratory assignments. The key idea of the proposed methodology is phased approach to the laboratory work implementation inside and outside the classroom through the academic discipline web resource tools, which includes the preparation manual and automatic access to the laboratory work, implementation and defence of laboratory work with the automated assessment of the corresponding reports. The technology of automated laboratory work assessment is understood as a technology of quality assessment in higher education. To determine whether the answer is correct the relevant algorithms have been incorporated into the web resources of the training course.

Graphite nanoplatelets (GNPs)-the segregated ultra-high molecular weight polyethylene (UHMWPE)-based composites with hybrid filler-decorated with Fe O were developed. Using X-ray diffraction and scanning electron microscopy, it was shown that the decorated component has the shape of separate granules, or their clusters were distributed evenly over the GNPs surface. The individual Fe O nanoparticles are predominantly rounded, with diameters of approximately 20-60 nm. The use of GNPs/Fe O as a filler leads to significant decreases in the percolation limit φc, 0.97 vol% vs. 0.56 vol% for GNPs/UHMWPE- and (GNPs/Fe O )/UHMWPE segregated composite material (SCM), respectively. Modification of the GNP surface with Fe O leads to an essential improvement in the electromagnetic interference shielding due to enhanced microwave absorption in the 26-37 GHz frequency range in its turn by abundant surface functional groups and lattice defects of GNPs/Fe O nanoparticles.

Graphite nanoplatelets (GNPs)—the segregated ultra-high molecular weight polyethylene (UHMWPE)-based composites with hybrid filler—decorated with Fe[sub.3]O[sub.4] were developed. Using X-ray diffraction and scanning electron microscopy, it was shown that the decorated component has the shape of separate granules, or their clusters were distributed evenly over the GNPs surface. The individual Fe[sub.3]O[sub.4] nanoparticles are predominantly rounded, with diameters of approximately 20–60 nm. The use of GNPs/Fe[sub.3]O[sub.4] as a filler leads to significant decreases in the percolation limit φc, 0.97 vol% vs. 0.56 vol% for GNPs/UHMWPE- and (GNPs/Fe[sub.3]O[sub.4])/UHMWPE segregated composite material (SCM), respectively. Modification of the GNP surface with Fe[sub.3]O[sub.4] leads to an essential improvement in the electromagnetic interference shielding due to enhanced microwave absorption in the 26–37 GHz frequency range in its turn by abundant surface functional groups and lattice defects of GNPs/Fe[sub.3]O[sub.4] nanoparticles.

Formation of the information society as a new form of social reality functioning by means of multi-indicators - symbols - signals - stimulus – codes stimulates the ever-increasing intellectualization of all types of social practices, including education. It undergoes the process of transformation into a theory and practice of continuous professional development of cognitive workers capable of self-processing information and acquiring new knowledge based on using IT. The main areas of reforming education in Ukraine is to bring its essence and content into line with the contemporary development world trends, caused by civilizational changes and challenges, as well as its ability to provide adequate responses to them. Based on a synthesis of scientific literature on the educational development in the information society and analysis of the current trends in the development of the postgraduate education system in Ukraine, the article provides SWOT analysis of the development of this educational branch in the conditions of its informatization, individualization and integration into the European information educational space. The purpose of the article is to identify the problems, advantages, threats and prospects of informatization of the national postgraduate education and transforming it into an open system. The study concluded that the effective functioning of postgraduate education in the open information educational space is ensured by its variability, flexibility, and the ability to create optimal conditions for the individualization of the educational process based on a combination of formal, informal and informal education. An open university of postgraduate education is proved to provide such conditions most optimally. The perspective directions and development goals of the national system of open postgraduate pedagogical education in Ukraine are determined. The following model of this process is introduced: \"civilization change - educational problem - search for ways and development of a program for its solution - displaying them in the content and forms PPE - accreditation and implementation of the corresponding educational programs varied in diversity of their content and profiles - monitoring the quality of their implementation.\"

Формування інформаційного суспільства як нової форми соціальної дійсності, що функціонує через посередництво мультизнаків – символів – сигналів – стимулів – кодів, стимулює всезростаючу інтелектуалізацію усіх видів суспільної практики, зокрема, освіти, яка перетворюється на теорію і практику неперервного професійного розвитку когнітивних працівників, здатних самостійно опрацьовувати інформацію і здобувати нове знання на основі використання інформаційно-комунікаційних технологій. Основними напрямами реформування освіти в Україні є приведення її сутності і змісту у відповідність із сучасними світовими тенденціями її розвитку, зумовленими цивілізаційними змінами і викликами, а також набуття нею спроможності давати на них адекватні відповіді. На основі узагальнення наукової літератури з проблеми розвитку освіти в інформаційному суспільстві й аналізу сучасних тенденцій розбудови системи післядипломної освіти в Україні у статті здійснено SWOT-аналіз розвитку цієї освітньої галузі в умовах її інформатизації, індивідуалізації й інтеграції в європейський інформаційний освітній простір. Метою статті є визначення проблем, переваг, загроз і перспектив інформатизації вітчизняної післядипломної освіти і перетворення її на відкриту систему. За результатами дослідження зроблено висновок, що ефективне функціонування післядипломної освіти у відкритому інформаційному освітньому просторі забезпечується завдяки набуттю нею варіативності, гнучкості, здатності створювати оптимальні умови для індивідуалізації освітнього процесу на засадах поєднання формальної, неформальної та інформальної освіти. Доведено, що такі умови найбільш оптимально забезпечуються у відкритому університеті післядипломної освіти. Визначено перспективні напрями й завдання розбудови національної системи відкритої післядипломної педагогічної освіти в Україні, запропоновано модель цього процесу: «цивілізаційна зміна – освітня проблема – пошук шляхів і розроблення програми її вирішення – відображення їх у змісті і формах ППО – акредитація і реалізація відповідних варіативних, диверсифікованих за змістом і профілями освітніх програм – моніторинг якості їх реалізації».