In the modern world there has been change in education environment and education technologies, which has led to new concepts and tendencies in training and education. The purpose of this research is to explore evolution of terminology in distance, open, online education and learning. The change in use of the terminology is analysed through the Google Books Ngram Viewer that allows to define frequency of the use of the terms in six publications corpora for the certain period. The research identifies tendencies of the use of the terms in the sphere of education in different language groups compared and reveals interrelation between the change in the use of the terminology and economic, social, political and technological factors.

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It is well known that a lot of chemical and physical processes take place on the surfaces of interaction between solid and liquid substances. These processes include a very important technological process of uranium, nickel, copper, precious metal and other solid compound extraction - in-situ leaching. In this article we will rely on the mathematical description of these complex systems proposed by A.M. Meirmanov, where the main idea is the presence of new conditions on a free (unknown) boundary between liquid and solid phases (“pore space - solid skeleton”). These conditions express the usual laws of mass conservation of mass and the development of the mathematical model describing the processes at the macroscopic level. The method proposed in the book allows us to study numerically the dependence ways of free boundary dynamics on a heterogeneous solution distribution velocity and external parameters (reagent temperature, pressure and concentration).

In the selected treatment modes, a thin wedge-shaped twin was observed, it passed through a section of the crystal with a weak concentration of visible defects. Additional etching of the titanium film revealed an ordered arrangement of dislocations with contrast that appeared on the surface inside the circular sites, which are the stacking faults inside the dislocation loop. The authors provide an explanation of the formation of stacking faults using the detected oscillating contrasts of the faults that are close to the surface. The voltage fields around the wedge-shaped twin, which were constructed with the use of computer simulation, made it possible to determine the value of the elastic stress when it comes into contact with the stopper.