Formation of the Digital Generation in a Distance Learning Environment

Nataliіa, Levchenko,Nataliia, Sukhostavets,Lesia, Zelman,Alla, Kulichenko,Kseniia, Balabanova International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.5

This article is devoted to the study of the process of formation of the digital generation in a distance learning environment. With the introduction of quarantine due to the spread of COVID-19, opponents of digital technologies were forced to turn to relevant resources, while supporters identified new opportunities for the development of didactics and education in general. The irreversibility of the former educational reality became apparent and only the scale of the vision of potential change by interested and disinterested groups differed. Using a comprehensive approach, the authors consider the issues related to the direct and indirect impact of distance learning on children and young people born after the beginning of the XXI century. The article reveals the prerequisites and implications of distance education for the interaction of participants in the educational process. IC technologies during the educational process in the primary grades, in addition to identifying the student's learning deficit, should provide the transmission of non-verbal signals, which are important for children of this age. At the same time in the secondary school IR-technologies are designed to replace frontal learning during the assimilation of knowledge and at the same time not to worsen the quality of the educational process. Formation of students in the HEI takes place in the political science format, constant discussion of problem situations, so the task of introducing IC technology in this process is the accurate transfer of the content of the discussions. Individualization and autonomization of the educational process, its dependence on the results of the choice of educational content, and the use of pedagogical management tools change the philosophy of education for children and youth. The authors conclude that the formation of a digital generation, characterized by an increased level of digital literacy of children and youth, the possession of a certain level of digital capacity requires the use of strategies aimed at optimizing the learning process in a digital educational environment.

Inter-Territorial Collaboration in the Context of Strengthening Its Economic Security

Hlazov, Oleksandr,Kalashnikova, Khrystyna,Zolotarov, Volodymyr,Levchenko, Iaroslava,Britchenko, Igor,Losonczi, Peter International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.spc12

An article is devoted to developing the concept of inter-territorial collaboration in the context of strengthening its economic security. This concept is based on the study of international experience and successful OTG functioning in Ukraine. The idea includes directions, forms, tools, procedures, and financial sources for joint projects that strengthen territorial associations' economic security. The research consists of assessing the state of economic development of territorial communities and forms of their cooperation with other territorial communities. Analysis, synthesis, induction, and deduction are the main methods of scientific knowledge used to summarize statistical information, normative and legal support, and global experience of cooperation of territorial communities. The study results include the main areas of cooperation of territorial communities in Ukraine, including long-term collaboration. The study also contains successful examples of collaboration between different territorial communities, applying practical aspects and tools to form effective interaction. The main points of discussion concern various forms of interaction between territorial communities, which allow achieving the economic goal more quickly and effectively.

필자약력

김광영(Kwang Yong Kim),레프첸코(G. Y. Levchenko),먀스니코프(V. S. Miasnikov),사벨리예프(R. V. Saveliev),심경욱(Kyong Wook Shim),야코블레프(A. G. Yakovlev),오명호(Myeung Ho Oh),왕호녕(Hu Ning Wang),정천구(Chun Ku Cheong),정한구(Han Ku Chu 한양대학교 아태지역연구센터 1994 중소연구 Vol.18 No.1

Simple haptotactic gradient generation within a triangular microfluidic channel

Park, Jungyul,Kim, Deok-Ho,Kim, Gabriel,Kim, Younghoon,Choi, Eunpyo,Levchenko, Andre Royal Society of Chemistry 2010 Lab on a chip Vol.10 No.16

<P>Most microfluidic devices developed to date for the analysis of live cells incorporate channels with relatively simple constant rectangular or semi-circular cross-sections, relying on complex channel network geometries rather than alteration of the shapes of the channels themselves for development of diverse functional fluidic controls, <I>e.g.</I>, spatial gradients of bioactive ligands. In this study we describe a simple alternative method to create highly defined and predictable gradients of surface bound molecules. This method relies on the generation of a considerable variation in the spatial distribution of flow velocities within a channel with a triangular cross-section. The triangular shape can be easily implemented by using bulk wet etching and polydimethylsiloxane (PDMS) replica molding techniques. By analytical modeling and simulation, we predict that the deposition of the solute onto a channel boundary depends on the local flow rate values, yielding gradient spanning the whole width of the channel. This prediction was validated by direct visualization of the flow rate and fibronectin–rhodamine deposition in a fabricated microchannel. Using this experimental platform, we assessed cell migration in response to a fibronectin gradient deposited in the microchannels. We find that this gradient could induce robust haptotaxis of Chinese Hamster Ovary (CHO) cells towards the areas of higher fibronectin surface density. We propose that the described simple gradient generation method can help to avoid complexity present in many current device designs, allowing to introduce more easily other potentially useful design features.</P> <P>Graphic Abstract</P><P>In this study we describe a simple alternative method to create highly defined and predictable gradients of surface bound molecules. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b924222h'> </P>

Digitization Of Education: Current Challenges Of Education

Osaula, Vadym,Parfeniuk, Ihor,Lysyniuk, Maryna,Haludzina-Horobets, Viktoriia,Shyber, Oksana,Levchenko, Oksana International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.11

The article identifies the features of the digital culture of modern society in the dynamics of its impact on the education sector, identifies the main directions of digitalization education, an objective analysis is presented, the possibilities of examination as a scientific assessment are determined "Digital reforms" of education, the role of traditional values of educational culture in expertise and improvement digital innovations in the education system, identified the main contradictions in the development of digital culture, to determine the directions of its improvement. The article describes the three main components of information technology as a complex of hardware, software and a system of organizational and methodological support; the description of analog and digital information technologies is presented. The authors list the most common multifunctional office applications and IT tools; the advantages of using IT in the educational process are highlighted.

Theoretical Problems of Designing Pedagogical Technologies in Higher Education Institutions

Yakymenko, Svitlana,Sukholova, Marianna,Drahunova, Vira,Konokh, Anatolii,Levchenko, Nataliia,Bozhok, Nataliia International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.12

The article discusses theoretical and methodological issues of modern pedagogical technologies: the essence, structure, functions, principles, conditions for successful functioning in educational process of the university. The article reflects the results of the analysis of publications on the following grounds: 1) levels of presentation of scientific information (theoretical, theoretical and experimental, empirical); 2) signs and properties of educational technologies; 3) approaches to the choice of grounds for classifications of educational technologies; 4) the possibilities of educational technologies in the formation of the academic, communicative and professional competence of a specialist; 5) criteria for assessing the effectiveness of their application in university educational practice; 6) the readiness of university teachers to develop and implement educational technologies.

Growth of rGO nanostructures via facile wick and oil flame synthesis for environmental remediation

Lekshmi G. S.,Tamilselvi R.,Prasad Karthika,Bazaka Olha,Levchenko Igor,Bazaka Kateryna,Mohandas Mandhakini 한국탄소학회 2021 Carbon Letters Vol.31 No.4

Oil spills into ocean or coastal waters can result in signifcant damage to the environment via pollution of aquatic ecosystems. Absorbents based on reduced graphene oxide (rGO) foams have the capacity to remove minor or major oil spills. However, conventional chemical synthesis of rGO often uses petrochemical precursors, potentially harmful chemicals, and requires special processing conditions that are expensive to maintain. In this work, an alternative cost-efective and environmentally friendly approach suitable for large-scale production of high-quality rGO directly from used cooking sunfower oil is discussed. Thus, produced faky graphene structures are efective in absorbing used commercial sunfower oil and engine oil, via monolayer physisorption in the case of used sunfower and engine oils facilitated by van der Waals forces, π–π stacking and hydrophobic interactions, π-cation (H+) stacking and radical scavenging activities. From adsorption kinetic models, frst-order kinetics provides a better ft for used sunfower oil adsorption (R2=0.9919) and second-order kinetics provides a better ft for engine oil adsorption (R2=0.9823). From intra-particle difusion model, R2 for USO is 0.9788 and EO is 0.9851, which indicates that both used sunfower and engine oils adsorption processes follow an intra-particle difusion mechanism. This study confrms that waste-derived rGO could be used for environmental remediation.

Guided Cell Migration on Microtextured Substrates with Variable Local Density and Anisotropy

Kim, Deok-Ho,Seo, Chang-Ho,Han, Karam,Kwon, Keon Woo,Levchenko, Andre,Suh, Kahp-Yang WILEY-VCH Verlag 2009 Advanced functional materials Vol.19 No.10

<P>This work reports the design of and experimentation with a topographically patterned cell culture substrate of variable local density and anisotropy as a facile and efficient platform to guide the organization and migration of cells in spatially desirable patterns. Using UV-assisted capillary force lithography, an optically transparent microstructured layer of a UV curable poly(urethane acrylate) resin is fabricated and employed as a cell-culture substrate after coating with fibronectin. With variable local pattern density and anisotropy present in a single cell-culture substrate, the differential polarization of cell morphology and movement in a single experiment is quantitatively characterized. It is found that cell shape and velocity are exquisitely sensitive to variation in the local anisotropy of the two-dimensional rectangular lattice arrays, with cell elongation and speed decreasing on symmetric lattice patterns. It is also found that cells could integrate orthogonal spatial cues when determining the direction of cell orientation and movement. Furthermore, cells preferentially migrate toward the topographically denser areas from sparser ones. Consistent with these results, it is demonstrated that systematic variation of local densities of rectangular lattice arrays enable a planar assembly of cells into a specified location. It is envisioned that lithographically defined substrates of variable local density and anisotropy not only provide a new route to tailoring the cell-material interface but could serve as a template for advanced tissue engineering.</P> <B>Graphic Abstract</B> <P>Microtextured substrates with variable local density and anisotropy (see image) are designed to guide the organization and migration of fibroblasts in spatially desirable locations. Cell motility is sensitive to variation in the local density and anisotropy of rectangular lattice, with cell elongation and speed decreasing on symmetric lattice. Also, cells integrate orthogonal spatial cues when determining the direction of their orientation and movement. <img src='wiley_img/1616301X-2009-19-10-ADFM200801174-content.gif' alt='wiley_img/1616301X-2009-19-10-ADFM200801174-content'> </P>

Local structure and magnetic inhomogeneity of nano-sized La_0.7Sr_0.3MnO₃manganites

Ulyanov, A. N.,Yang, D. S.,Mazur, A. S.,Krivoruchko, V. N.,Levchenko, G. G.,Danilenko, I. A.,Konstantinova, T. E. American Institute of Physics 2011 JOURNAL OF APPLIED PHYSICS - Vol.109 No.12

Theoretical Problems of Designing Pedagogical Technologies in Higher Education Institutions

Yakymenko, Svitlana,Sukholova, Marianna,Drahunova, Vira,Konokh, Anatolii,Levchenko, Nataliia,Bozhok, Nataliia International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.spc12

The article discusses theoretical and methodological issues of modern pedagogical technologies: the essence, structure, functions, principles, conditions for successful functioning in educational process of the university. The article reflects the results of the analysis of publications on the following grounds: 1) levels of presentation of scientific information (theoretical, theoretical and experimental, empirical); 2) signs and properties of educational technologies; 3) approaches to the choice of grounds for classifications of educational technologies; 4) the possibilities of educational technologies in the formation of the academic, communicative and professional competence of a specialist; 5) criteria for assessing the effectiveness of their application in university educational practice; 6) the readiness of university teachers to develop and implement educational technologies.