Using the approximation of the distributions of the axial component of the magnetic field stress vector, of temperature and radial displacements in the radial variable by cubic polynomials, we obtain a general solution of the connected dynamic problem of thermomechanics for an electric conductive hollow cylinder under the action of impulsed electromagnetic fields with amplitude modulation of characteristic types in modes with the impulsed modular signal, the damped sinusoid and the single electromagnetic impulse equal to the modular signal.

Generalization of the Anderson model to describe the states of electronegative impurities in liquid-metal alloys is the main aim of the present paper. The effects of the random inner field on the charge impurity states is accounted for selfconsistently. Qualitative and quantitative estimation of hamiltonian parameters has been carried out. The limits of the proposed model applicability to a description of real systems are considered. Especially, the case of the oxygen impurity in liquid sodium is studied. The modelling of the proper electron-ionic interaction potential is the main goal of the paper. The parameters of the proposed pseudopotential are analyzed in detail. The comparison with other model potentials have been carried out. Resistivity of liquid sodium containing the oxygen impurities is calculated with utilizing the form-factor of the proposed model potential. Dependence of the resistivity on impurity concentration and on the charge states is received.

The novel coronavirus disease (COVID-19) forced the Ukrainian government to introduce lockdown on March 12, 2020. In addition, the transition to distance learning in schools and universities has posed new challenges to the entire education system and young people. In this study, a survey of IT students was conducted using Google forms. The questions in the questionnaire were aimed at studying the impact of online learning on the distribution of the students' day and the impact of the pandemic on the emotional state of a young person. The survey results showed significant changes in the daily schedule of students caused by the pandemic crisis. Thus, a remarkable increase in computer time can be a negative factor in influencing the health and emotional state of the younger generation.

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