The article examines the concept of using the Internet of Things from the historical, semantic, value, performance and perspective sides. Graphically presented the principle of the Internet of Things and the objectives of its application in various fields of activity. A SWOT analysis of the concept of using the Internet of Things in modern smart cities is developed. In the most general sense, the Internet of Things is not a real worldwide network, but the concept of a network of those very "things," that is, physical and virtual objects that are connected to the Internet and the outside world. They are able to transmit the data they receive to each other in order to perform various actions based on it. However, it is not only manufacturers of "smart" equipment that are involved in the development of the concept. For the Internet of Things to function properly, many components need to work together, including communication systems, sensors, software, and technology platforms that connect devices and allow them to "see" and "understand" each other. Particular attention is paid to the comparison of Russian and international experience of using the Internet of Things and examples of its practical application (in the format of digital (applications) and real activities). Conclusions are made about the promising directions of development of the analyzed concept in the form of a smart city.

In this work the mixed problem for the forth order polylinear pseudohyperbolic equations is considered, when some coefficients are sufficiently smooth functions and some have bounded variations. The definition of weak solution is introduced. The theorem of existence and uniqueness of weak solution of the mixed problem.

The article deals with the way of solution to the main problems in making of Chinese Characters Introduction online course, which are the extent of theoretical part, teaching Chinese radicals, the necessity of pronunciation of radicals, Mastering the practical part, Testing the acquired knowledge, as well as some technical issues such as encoding problems, etc.

The kinetics and mechanism of the reaction of ozone with acetoxytoluenes in an acetic anhydride solution in the presence of manganese acetate have been studied. The main reaction products under these conditions are hydroxybenzyl alcohols in the form of the corresponding acetoxybenzyl acetates (65-77%). The effect of manganese (II) acetate on the selectivity of oxidation with respect to the methyl group has been studied. The mechanism of redox catalysis is considered, which explains the obtained experimental data.

The article deals with the problems of tonal compatibility in the mixing of tracks by DJs. The accuracy of determining the tonality of tracks by computer programs is investigated. A number of examples of the mixing of pairs of tracks with harmonious tonalities has been practically analyzed. The possible disharmonic overlaps are revealed, and the variants to prevent the dissonant sounds during mixing are proposed. The technique of mixing with the use of transposition is considered. The evaluation of the specialized notation of the tonalities is given. The main conclusions and recommendations are given in the conclusion of the article

It was investigated that the ecological condition of the Verkhnie Ivachiv water intake complex is determined by physicochemical, hydrological, biological (eutrophication), climatic (overdrying and water shortage), and anthropic (pollution) factors. Biogenic accumulation of nitrogen, phosphorus, and heavy metal compounds was detected in the process of water purification. The main problem of water quality in the Verkhnie Ivachiv water intake is rainwater runoff from the shores and the activities of the Malashiv landfill. It is established that the main factor influencing the surface water quality of Verkhnie Ivachiv reservoir is agriculture, which is manifested in the stable presence of ammonium nitrogen, nitrate and nitrite ions, increased biochemical oxygen consumption. Water quality is also significantly affected by anthropogenic pollution factors, primarily sewage from the Malashiv landfill, agricultural washout, disposal of organic matter, etc.

In connection with integration in the European and World educational concord higher education of Ukraine needs substantial modernization. One of its constituents is introduction of the newest educational technologies in the educational process. The article focuses on the issues of distance learning, highlights the major changes in distance education that have occurred in recent years during the pandemic and overviews the main problems of the new approach to e-learning. The authors come to the conclusion that distance learning will require qualified teachers who will introduce new methods and technologies into modern electronic textbooks, the material of which is based on the principles of programmable control of knowledge acquisition.

This article offers practical guide on how to organize user access differentiation to information system functionality on the basis of the author's improvement of the classical scheme of the Role Model of user access control. Recommendations on the implementation of the proposed system of access differentiation in the information system are given. The peculiarities of the construction of the mechanism of user authentication using web-tokens in the context of the proposed system are briefly touched upon.

An analysis of the existing modern technologies of power energy storage systems was carried out for further study of the issues of their placement in distribution systems, as well as their functioning under different operating modes and features of the power system.

This article examines the relationship of neuropsychological aspects in clinical neurology. The integration of two different dimensions of the brain is observed and considered, which are so interconnected that they are inseparable at many levels of nervous organization. The results of the study show that some of the neural structures of the brain are responsible for a variety of functions that include many cognitive as well as neurological features and symptoms found in various neurological disorders. The aim of the study is to analyse the relationship of neuropsychological aspects in clinical neurology. The study is descriptive and based on the results of earlier published works. Collections of scientific conferences, scholarly articles, reports of forums and seminars, periodicals and other materials were used for the analysis. The significance of the study is that the results reflected in the article can be used in further research.