bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and simulation of a high-performance CH3NH3Pb(I1–xClx)3-based perovskite solar cell using a CeOx electron transport layer and NiO hole transport layer
Authors: Ahmmed Shamim , Aktar Asma , Rahman Md Hafijur , Hossain Jaker , Ismail Abu Bakar Md 
Published: December 2020

Abstract
Herein, a novel planar heterostructure (ITO/CeOx/CH3NH3Pb(I1–xClx)3/NiO/Au) of a CH3NH3Pb(I1–xClx)3-based perovskite solar cell has been designed and numerically investigated. CH3NH3Pb(I1–xClx)3 has been introduced as an absorber layer due to its excellent thermal stability and high carrier diffusion length. Inorganic CeOx and NiO have been introduced as an electron transport layer (ETL) and hole transport layer (HTL), respectively, as their role in the enhancement of efficiency and stability of other perovskite-based solar cells has already been proven. The influences of different physical parameters of the CH3NH3Pb(I1–xClx)3 absorber layer, NiO HTL, and CeOx ETL on the device performance have been explored. The investigated results indicate that the thickness and carrier concentration of the CH3NH3Pb(I1–xClx)3 has a massive impact on solar cell performance. A considerable impact of the carrier concentration of the CeOx and NiO on device performance has also been observed. The role of CH3NH3Pb(I1–xClx)3-layer deep-level defects, CeOx/CH3NH3Pb(I1–xClx)3 interface defects, series resistance, and back contact work functionon solar cell performance were also studied. The optimized solar cell exhibited a power conversion efficiency of 26.05% with open-circuit voltage (V
OC), short-circuit current density (J
SC), and fill factor of 1.082 V, 29.41 mA cm−2, and 81.85%, respectively. This research indicates that the designed heterostructure of solar cells may appear as a viable alternative to manufacturing CH3NH3Pb(I1–xClx)3 high-performance perovskites.
Physical aspects and streamline analysis on hydromagnetic nonlinear radiative flow of Carreau-Yasuda fluid
Authors: Hari Babu B , Rao P Srinivasa , Reddy M Gnaneswara 
Published: December 2020

Abstract
The physical aspects of flow and heat transport analysis of non-Newtonian (Carreau-Yasuda) fluid through an upper paraboloid surface of revolution has been scrutinized. Non-linear radiation, magnetic field, heat generation are considered in this study. The governing flow equations are modeled in the formulation. The governing flow equations (PDE’s) are changed into a system of ODE’s by employing the related transformation variables. The highly non-linear and coupled ODE’s are resolved aid of Runge–Kutta fourth-order along shooting numerical procedure. The physical flow and temperature phenomena have analyzed for both Newtonian and Non-Newtonian fluid cases through plots for the dimensionless sundry variables. The fluid velocity dwindled with the escalation of the magnetic field. An increase in fluid temperature is observed against the temperature ratio variable. Behaviour of fluid temperature of Newtonian fluid is excessive as compared to the Carreau-Yasuda fluid case for the exponential parameter N. The present model (Carreau-Yasuda fluid) is simplified to the viscous fluid (Newtonian fluid) case when n = 1. The streamline flow patterns are reduced for higher thermal Grashof number Gr. The numerical comparison has been deliberated with existing outcomes for a limit case. The heat augmentation analysis through Carreau-Yasuda liquid has prominent applications in non-linear science and industrial technology.
Teaching stochastics to bachelors of mathematics: computer simulation for conceptual understanding
Authors: Kuznetsova Elena , Zhbanova Natalia 
Published: December 2020

Abstract
The professional training of mathematics students is notable for the large volume and complexity of the content of educational material. In this regard, the problem of conceptual understanding is relevant. Since many concepts in mathematics have a high level of abstraction, studying them, it is essential to create an image of an object through various forms of knowledge representation. Computer simulation in the study of probability theory and its applications (stochastics) help students understand the essence of random phenomena and forms the ability to analyze statistical data. Students whose curriculum includes a computer simulations workshop in the study of stochastics, not only solve problems better but also higher evaluate the value of probabilistic ideas and methods and have a lower level of anxiety. Due to the use of simulations in teaching mathematics students on stochastics, we use a computer as a means of automation of calculations, means of learning, and a tool of knowledge, which corresponds to the principle of the integrated use of information computer technology in the educational process.
Natural science education: a multiaspect system of models of mathematics
Authors: Melnikov Yu B , Gustomesov V A , Tsymbalist O V , Knysh A A 
Published: December 2020

Abstract
The use of computers to a certain extent devalues the role of manual calculations, but in the practice of mathematics education, the emphasis is still placed on the correct conduct of mathematical calculations. Therefore, in modern education, mathematics should be considered as a multifaceted multidimensional phenomenon, in which there are scientific, applied, historical and cultural, cultural and leisure, economic, management components. The education system should reflect the main aspects of mathematics, for which we propose to use a complex of its models. The article discusses several such models: activity, apparatus, phenomenological, process models of mathematics, two historical models of mathematics. An outline of their use for the design and evaluation of a study topic and a training course is made.
Motivation of technical university students to study physics and methods of teaching it in the context of a pandemic
Authors: Denisova O A 
Published: December 2020

Abstract
The article deals with the current problems facing modern higher education related to the teaching of natural science disciplines in technical universities. The article analyzes the influence of students’ motivation, their interest in the educational process, and the reasons that affect the assimilation of the material. Ways to solve this issue in the context of a new coronavirus infection pandemic are proposed. The use of distance learning technologies allows you to solve some of the difficulties that have arisen.
CAD/CAE/CAM when teaching the discipline “Fundamentals of machine design”
Authors: Sirotenko A N , Partko S A 
Published: December 2020

Abstract
The issue of training a future engineer in design and technology specialization is considered. For the effective assimilation of the acquired knowledge, improvement of the skills of using CAD and traditional design techniques in teaching the design and use of CAD, the principle of "end-to-end design" is applied. For a workshop in several disciplines, one task is used. This makes it easier for the student to adapt to the new discipline and accelerates its learning. When teaching a new discipline, a future engineer not only designs elements of an already known structure using CAD/CAE/CAM capabilities, but also corrects previously obtained design and technological solutions. Thus, not only new design skills are acquired, but the quality of the already acquired knowledge is improved.
Getting skills in configuration and management of communication network elements using the DiP software and hardware complex
Authors: Dmitriev A A , Ivanova M V , Prosviryakova L B 
Published: December 2020

Abstract
The article focuses on the problems of engineering education in a technical higher educational institution in particular on acquiring practical skills in configuration and management of communication network elements. This became possible through the creation of a software and hardware complex for studying the operation of optical lines and switching equipment, which will allow students who major in Information and Communication Technologies and Communication Systems, and others like it, to obtain theoretical, and most importantly, practical skills in modeling and operating networks of various levels of complexity. The configurations presented in the article are not reference or basic-they are given for an example and awareness of things, since for each network solution, individual parameters and technologies are applied.
Synthesis of a terminal control system for discrete nonlinear objects with PWM modulation
Authors: Siddikov I X , Sherboboyeva G B , Rustamova M B 
Published: December 2020

Abstract
In the synthesis of optimal control actions in systems with pulse-width modulation, difficulties arise in obtaining sufficiently simple equations, the solution of which can give incorrect and unacceptable results for further use. In addition, the use of existing methods for solving such problems, even using modern computer technology, cannot guarantee obtaining acceptable results.
Evaluation of geographical component of students’ scientific literacy using the principle of regionalization
Authors: Astrashabova M S , Ligaeva N A , Kuznetsova O A , Usmanova I X 
Published: December 2020

Abstract
The article discusses new approaches and methods, particularly the solution of situation problems aimed at generating and achieving high results of students in forming functional literacy. The use of the regional geographical material by the example of the Krasnoyarsk Territory is most effective in developing training problems that have a pronounced practice-oriented nature. Implementation of the regionalization principle in training involves the students’ perception of the processes of regional reality. Situation problems are proposed, the solution of which allows evaluating the maturity of scientific literacy of the students.
Application of information and communication technologies in state management to digital education of higher education in Vietnam
Authors: To Uyen Doan Thi 
Published: December 2020

Abstract
By 2020, Vietnam has 580 universities and colleges (including 266 universities and 314 colleges), meeting the training of 3.91 million students with the scale of 450 students per 10,000 people. Higher education is set in a new context with new technologies, changing the production base, generating more new occupations. Because university is a place that directly trains human resources for the labour market. The development of science and technology, information technology, not only creates conditions for universities to change the training model, apply technical technology to teaching to improve quality. However, the renovation and digital education are indispensable factors, directly affecting the existence and development of that educational institution. Of course, the state, the management units must have a policy mechanism, promote the digital education of higher education.
Application of a new technology stack in the development of the mobile app «Schedule of classes»
Authors: Popov A A , Gritsenko E M , Satsuk M M , Artyshko A A , Mironov D E 
Published: December 2020

Abstract
The task of improving the effectiveness of activities aimed at prompt receipt of information by students of Reshetnev Siberian State University of Science and Technology is solved by using the developed mobile application «Schedule of classes». Due to the heavy load on the University’s unified server, there are temporary delays in accessing the main site, which makes it inconvenient to use it. In this regard, there is a need to solve this problem by bringing the described process to partial autonomy. This approach will allow you to combine high performance due to the speed of the mobile operating system and expanding the functionality of both the application itself and the means of sending information from the management of the Institute to students. The purpose of this work is to study and analyze existing mobile applications of other universities, their advantages and disadvantages. Based on the research, develop a mobile application, agreeing with the Directorate of the Institute of Informatics and telecommunications tasks. This article presents the main aspects of the design and software solution. The software solution is implemented in the Android Studio integrated development environment in the Dart programming language, using the Flutter SDK.
A system of digital simulation models for distance learning of computer subsystems in IT courses
Authors: Orlov S P , Efimushkina N V , Kravets O Ja 
Published: December 2020

Abstract
Modern education actively uses new forms, such as distance learning, information technology, including the use of digital models. In the article, a system of digital software models to simulate the basic components of modern computers is considered. The described system is focused on the study of the composition and processes in the computer in IT courses for university students. The structure of system simulation models are designed for the study of the groups of the main computer subsystems: input/output subsystem, cache and multiprocessor memory, pipeline, superscalar, microarchitecture EPIC, the topology of the main configurations of local computer networks. A distinctive feature of the proposed system of models is the advanced animation of processes in the studied computer subsystems. An example of a superscalar processor digital model is considered, a model screen form and list of monitored parameters are presented. A data envelopment analysis technique for assessing the effectiveness of training is proposed. A linear programming problem is formulated based on the Banker-Charnes-Cooper model. The graphs for evaluating the results obtained on the test group of students are given.
Student model implementation in the digital educational environment for IT specialists training
Authors: Shvetsov A N , Sergushicheva A P , Andrianov I A , Kharina M V , Zaslavskaya O Yu 
Published: December 2020

Abstract
The article presents the key aspects of implementation of the IT student model in the digital educational environment. The student model is the basis of the intelligent component of the digital environment to support the process of personalized e-learning, taking into account the needs and abilities of each student. The article provides justification, systematization and formal description of the main structural elements of the IT student model. The importance of the student model for monitoring the development of professionally significant personal qualities of students in IT areas is proven, and set of parameters of the student’s personal model is determined. The results of the experiments performed by the authors, are analyzed, which confirm the adequacy of the developed model and allow us to establish relationships between its components. The software for the implementation of intelligent features for managing adaptive learning based on the developed student model is presented briefly.
Digitalization of higher education in the context of information inequality
Authors: Romanova N V , Sabirova Z E , Sidorova O V 
Published: December 2020

Abstract
The article examines the issues of information inequality in the context of digitalization of education in the higher education system of the Russian Federation. The difference between the concepts of “digital divide” and “digital inequality” is made, the specifics of these terms in relation to the digital educational environment are revealed, and the concept of “new digital divide” is given. As digital technologies are becoming more accessible today, the technological aspect of the digital divide in education will become less significant over time. The presence of digital inequality in the activities of Russian universities in the digital educational process is considered in a regional context, the leaders and outsiders of this process among the constituent entities of the Russian Federation are highlighted, problem areas in the context of digital educational activities are identified, and key directions of the national strategy for the digital transformation of education are proposed.
Essential characteristics and types of digital media in the educational context
Authors: Mantulenko V 
Published: December 2020

Abstract
The article investigates theoretical aspects of new media and their use in educational context. The author analyzes the concept of "digital" media, their essential features determining specifics of media usage, communication and human interactions. Media literacy and media culture are of special interest to the application of digital media in education. The author presents the own concept of the term "media culture" of individuals emphasizing the importance of value-motivational component of this complex phenomenon. The main task of this work is to understand the nature of digital media and their prospects for educational purposes, how they change the human interaction, what are new needs of the contemporary "media generation" formed or influenced by information and communication tools.
Testing for general and inorganic chemistry in the MOODLE system
Authors: Artemkina I M , Shcherbakov V V , Artemkina Yu M 
Published: December 2020

Abstract
The current epidemiological situation in the world forces the pedagogical community to switch to the use of various forms of education using distance educational technologies. One of the most difficult problems of organizing distance learning is the problem of various forms of monitoring students knowledge. The most promising area for assessing the quality of knowledge is computer testing. Based on many years of experience in the development of computer test tasks, the basic requirements for computer test tasks and for computer tests are formulated, which make it possible to increase the efficiency of their use to control students knowledge. Examples of the correct representation of answer options in tasks with a choice of answer options (in closed test tasks) are given and ways to reduce the probability of guessing the correct answer are considered. With regard to the course "General and Inorganic Chemistry", the features of the use of various forms of test tasks are analyzed using specific examples. For the organization of computer testing of first-year bachelor degree students in the course "General and Inorganic Chemistry" the Moodle system was chosen. This system has various functions for creating tests, as well as for conducting training and control testing. For the convenience of entering test tasks into the Moodle system, these tasks must be converted into GIFT format. After that, GIFT tasks are easily imported into Moodle. Examples of different forms of test items in WORD and GIFT formats are given. The Moodle distance learning system (platform) has introduced a bank of tests for the course "General and Inorganic Chemistry", which is taught to first-year bachelor degree students of the Mendeleev University of Chemical Technology of Russia. The features of using this platform for organizing computer testing when using distance and blended forms of education are shown.
Accented visualization application in interactive manuals for technical training and support
Authors: Ivaschenko A V , Sitnikov P V , Diyazitdinova A R 
Published: December 2020

Abstract
The capabilities of modern information and communication devices (tablets, glasses, helmets, etc.) that provide user interfaces with Augmented Reality (AR) are successfully used in education and maintenance support nowadays. The main benefits are concerned with the possibility to display the required information in the context of operations performed by the user. Technically it is implemented in the form of textual hints or visual 3D objects with highly realistic appearance and behavior. New features prompt new challenges: the user can be easily overloaded with lots of information, and some real objects that require user’s attention can be overlapped by virtual ones in one scene. In order to solve this problem and improve the usability and effectiveness of AR devices application in maintenance and education it is proposed to build adaptive user interfaces that consider the context and focus of the user. From information technology perspective this approach forms a promising area of application of high-potential technologies including machine learning and computer vision. In this paper there is presented an example of AR implementation as a part of an interactive manual, which provides adaptation and personalization based on the concept of accented visualization. Identification of objects and their classification is implemented using the artificial neural network.
Presentation in English language teaching in the context of higher education digitalization
Authors: Obidina M M , Nikolaeva O B , Grotskaya N N 
Published: December 2020

Abstract
The paper is devoted to one of the main multifunctional elements of any foreign language training course–multimedia presentation. The authors describe basic requirements to a presentation, its aims and advantages, consider different types of presentation tasks. Special attention is paid to the analysis of using presentations in their practical experience and feedback from students. The study allowed to examine students’ attitude to presentations considering 5 aspects such as the choice of presentation topics, students’ willingness to do this task, their self-assessment, the level of PC skills, literacy and speech competences. The questionnaire was used to analyze effectiveness of this task in different periods of time (2008-2010, 2018-2020), to prove the influence of computerization of higher education on students’ scientific and academic work, to identify the main difficulties for students in creating presentations and offer possible ways of overcoming them. The intensive use of information technologies contributes to the formation of an intellectually developed creative personality, well-oriented in the information space, ready for self-development and application of this knowledge in their future professional activities.
Traditional and digital technologies in professional education: integration opportunities
Authors: Vetitnev A M , Maznichenko M A , Lopatinskiy D B , Aksenov I A 
Published: December 2020

Abstract
The article considers the traditional and digital technologies taking into account vocational education modern directions of development and modernization. It has been substantiated that the integration of such technologies is an important factor in improving the quality of vocational education. The authors’ approach to such integration is proposed on the basis of complementarity or mutual reinforcement of the capabilities of traditional and digital technologies. The types of integration of such technologies are described from the standpoint of increasing their didactic productivity: addition, replacement, development, transformation. Algorithms for the integration of traditional and digital technologies in teaching a particular discipline and in the implementation of an educational program are presented. These algorithms can be used by college teachers and heads of educational programs of secondary vocational education.