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The paper provides an overview of methods for determining reliability indicators and, on the basis of the analysis, proposes a new method for assessing the parametric reliability of products based on a small number of tests. The determination of the parameters and double logistic distribution based on the test results is considered, a statistical experiment was carried out, which was based on the method of statistical modeling of Monte Carlo. An example of evaluating parametric reliability by a new method is also given, on the basis of which an engineering technique is proposed. In the conclusion, remarks are made regarding the advantages of the novel method.

The article is devoted to one of the best today computer program for antenna modelling. No special computer simulation skills are required to use this software. In this study, based on foreign and domestic sources, the influence of the MMANA-GAL program on the design of various types of civil antennas is considered. The paper specifically describes this simulation program. The description includes its history of creation, application, comparison with previous programs and algorithms, the interface of the MMANA-GAL itself is also described. It tells about how useful this program is, how it simplifies life and saves time for developers and designers, since the built-in library contains examples of more than two hundred antennas. Standing out advantages are: its free-of-charge basis, and from the operational characteristics - display of 2D and 3D antenna radiation patterns and its frequency response.

In this work, the author shows the results of the study of the nomenclature base for industrial cleanliness in domestic sources and compares them with foreign analogues used in related fields of activity. With a detailed analysis of the standards, one can conclude that they are similar. The study presents universal methods for achieving a given surface cleanliness of technological equipment, which allow obtaining a result that meets the requirements of both domestic and international standards.