The work is devoted to the development of an information model based on ontological approach in the framework of an educational course. The aim is to reduce the communication time between the participants of the educational process: coordinators, students and tutors. The concept of the solution was formed, namely analysing the activity of the course coordinator in the ‘Telegram’ chats within the course ‘Digital district of electrical networks’ of the network university ‘Energynet’. Based on this, ways to reduce time costs were identified by creating a Telegram bot based on an ontology model. The method reduces the time cost of communication between the coordinator, tutors and students. The results of the study showed that the chatbot built on the ontological model of the educational process within the course ‘Digital district of electrical networks’ helps to significantly reduce time costs of the communication process within the educational model.

Keywords: ontology, networked learning, educational model, chat bot, ontological model, telegram bot, online education, energy, digital university

The paper considers methods of taking into account the energy dependence of the effective mass of hot carriers in the volume of semiconductors of the AIIIBV type for three different cases of dispersion. The classical deviation of the dispersion from the quadratic law, the Kane deviation of the dispersion from the quadratic law and the dependence m (W), connected with the two-valley representation of semiconductors of the AIIIBV type, are analyzed. Energy dependences of the normalized effective mass for the main valley, lateral valley, and total energy are calculated, taking into account the intervalley transition and also the energy dependences of the normalized effective mass calculated by the equations. An estimation of the effect of an external electric field on the average carrier energy taking into account different dispersion mechanisms is made.

Keywords: dispersion characteristic, effective mass, quadratic law, Keynes deviation of dispersion, effect of "weighting" of electrons, energy dependencies, heating effects