The methods and algorithm to assess dynamic characteristics of high-rise structures are given in the paper taking into account the variability of slopes and the structure thickness in the framework of one-dimensional theory of viscoelasticity. The Boltzmann-Volterra hereditary theory was used to describe dissipative processes in the structure material. The reliability of results was verified by comparing the obtained results with the exact solution of a number of test problems. Natural vibrations of high-rise chimney stacks and ventilation pipes of thermoelectric and nuclear power plants have been investigated. It was revealed that the natural frequencies of the considered structures fall into the dangerous range of earthquake frequencies. The obtained frequencies of natural vibrations of real structures are compared with the results of field experiments.

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The article discusses some aspects of the organization of the information system of the Archive of the First President of the Republic of Uzbekistan Islam Karimov. The problem of digitalization of archival activities is quite relevant for Uzbekistan due to the fact that traditional approaches to the construction of information retrieval mechanisms and the organization of information services in archiving today often do not correspond to the required level of efficiency and user needs. As part of the work carried out, the specific task was to organize a software environment for the formation of an electronic catalog of archived descriptions, filling databases of digitized copies of archival materials, as well as flexible multidimensional search and presentation of information. The way to solve this problem is to use the archival information system «AtoM». As a result, a database of digitized archival materials was created, reflecting the life and work of the First President of the Republic of Uzbekistan Islam Karimov, equipped with a developed search and reference apparatus.