Impedance spectroscopy of modified potassium titanates. I

The electrochemical and electrophysical properties of the protonated and modified with silver iodide potassium titanates, which can be applied in energy storage units, have been investigated by impedance spectroscopy. It has been shown that the dielectric losses at medium and high frequencies are weakly dependent on the polarizing voltage. It has also been established that transfer in modified potassium titanate can be made through potassium and silver ions. The equivalent scheme of the process has been proposed and the magnitudes of the Warburg impedances have been calculated

Impediance spectroscopy of modified potassium titanates. II

The electrochemical and electrophysical properties of basic and protonated potassium titanates in contact with the graphite electrodes were studied using the method of impedance spectroscopy. The characteristics of potassium titanates are given depending on the methods of modification and on the methods of their processing. The activation energies for some compositions were determined

Blending pedagogy and digital technology to transform educational environment

This article shows efficacy of competences-oriented education model, representing effectiveness of pedagogy technology and digital tools blending in transforming education while using tutor’s support. In correspondence to contemporary requirements and education system special features, connection between digital education tools and tutor technology contributing to students’ key competences development is determined. The paper contributes to the field by summarizing some theoretical issues and offering implementation suggestions for effectively integrating digital technologies into teaching and learning. The use of digital technologies in educational activities opens up new opportunities, adequate methods for dissemination and management of digital information, development of necessary competencies on the basis of digital literacy, ensuring equitable access for all who wish to obtain necessary knowledge and decision-making skills, ensuring demand for school graduates in the world labor market in situation of digital economy. Innovative technologies become a problem adding difficulties to students’ burden. Tutor becomes an intermediary between students and digital technologies to promote students’ active learning practices; there are not so many students who can appreciate digital learning practices and get the most of it. The role of tutoring in digital literacy promotion is hard to overestimate. Tutor support is a pedagogical activity in individualization of education aimed at identifying and developing students’ educational motives and interests. To form students’ key competencies in education system, it is necessary to supplement traditional education with tools of digital educational technologies, new trends in pedagogies such as tutoring, which is becoming an integral part of modern learning process

Education process visualization in metacognition development and sustainability

The article reflects on the role of visualization in education. Modern society is characterized by rapid growth of information that people have to process in order to maintain progress and sustainability in science and development of education. The amount of information is growing so quickly that a person is no longer able to perceive actual data about the outside world and process it using traditional methods. The basis of the “image of the world” contains not only concepts, but the semantic images created with the help of visual thinking. In our study we assume that students are quite limited in their knowledge about cognitive phenomena or in their meta-cognition and do relatively little monitoring of their own memory, comprehension, and other cognitive enterprises. But we also assume that every student is potentially capable of meta-cognition, which is thinking of how better to perform cognitive actions and to be aware of how to learn. Developing meta-cognitive awareness is important because it helps learners become more efficacious and more autonomous. For many of them it can be identified as the most effective way of acquiring knowledge. Visualizing the very process of learning can help see how well it is going. Schema theory offers different ways of using schemas, especially in education. So far, there have been researches on schema as a tool for particular skills such as better comprehension, memorizing and retrieval of the knowledge received. It means students can use schemas to better understand the process of learning and skills acquired

EDUCATION PROCESS VISUALIZATION IN METACOGNITION DEVELOPMENT AND SUSTAINABILITY

The article reflects on the role of visualization in education. Modern society is characterized by rapid growth of information that people have to process in order to maintain progress and sustainability in science and development of education. The amount of information is growing so quickly that a person is no longer able to perceive actual data about the outside world and process it using traditional methods. The basis of the “image of the world” contains not only concepts, but the semantic images created with the help of visual thinking. In our study we assume that students are quite limited in their knowledge about cognitive phenomena or in their meta-cognition and do relatively little monitoring of their own memory, comprehension, and other cognitive enterprises. But we also assume that every student is potentially capable of meta-cognition, which is thinking of how better to perform cognitive actions and to be aware of how to learn. Developing meta-cognitive awareness is important because it helps learners become more efficacious and more autonomous. For many of them it can be identified as the most effective way of acquiring knowledge. Visualizing the very process of learning can help see how well it is going. Schema theory offers different ways of using schemas, especially in education. So far, there have been researches on schema as a tool for particular skills such as better comprehension, memorizing and retrieval of the knowledge received. It means students can use schemas to better understand the process of learning and skills acquired

International Student Exchange Management as Factor of Educational Services Development

Since the beginning of XXI century higher education internationalization trend has been intensifying around the world. The goal of the research is to study managing international education characteristics to promote educational services export. Levels of interconnection and interdependence between economic agents around the world are increasing; transnational forms of economic activity, information and communication technologies are developing. The market for higher education is developing intensively as educational services of the highest international level demand is increasing. The research goal is to analyze the main economic tendencies in modern students’ exchange programmes. The problems discussed are the need to increase educational services export by promoting it using various student exchange models, study of managing international education characteristics to promote educational services export and its development. For this purpose the methodology consisting of modeling educational policy processes and analyzing the results is used. The results of the study show that higher education takes on international socio-economic features, which are to be seen as an attractive investment target. Modern higher education is developing in the conditions of open access and mutual influence of conditions in different countries, depending on the basis of economic, political and cultural relations. The growing interest in education abroad leads to existing paradigm of educational services management review thus updating this study’s topic. In the conclusion we highlight that integrative processes in internationalization of education management can significantly enrich practical application in this sphere. Recommendations in this study can be used to increase educational services export and import

Влияние температуры на длительность флуоресценции и электронные спектры безметалловых тетрапирролов в органическом полимере

Измерены спектрально-люминесцентные характеристики и длительность флуоресценции серии безметалловых тетрапирролов в твердых пленках поливинилбутираля при 293 и 77 К. Полученные результаты свидетельствуют об отсутствии коэффициента вязкости в изучаемом случае усиления флуоресценции, то есть для тетрапирролов, проявляющих усиливающий эффект в жидких растворах (тетраазапорфин и замещенный тетраазахлорин). Продолжительность флуоресценции в увеличение пленки при понижении температуры до 77 К незначительно увеличивалось. Анализ экспериментальных данных позволил оценить квантовые выходы внутренней конверсии и межкомбинационной конверсии тетраазапорфина и тетраазахлорина - фундаментальных структур тетрапиррольного ряда. Spectral and luminescent characteristics and the duration of fluorescence were measured for a series of metal-free tetrapyrroles in polyvinylbutyral solid fims at 293 and 77 K. The results provided evidence for the lack of a viscosity factor in the case of the fluorescence enhancement under study, i.e., for the tetrapyrroles showing the enhancement effect in liquid solutions (tetraazaporphine and substituted tetraazachlorin). The fl uorescence duration in the film increased insignifi cantly on lowering the temperature to 77 K. An analysis of the experimental data made it possible to estimate the quantum yields of internal conversion and intersystem crossing for tetraazaporphine and tetraazachlorin, which were the fundamental structures in the tetrapyrrole series