The analysis of structure and the maintenance of a technique of checking 002.D4-14 which extends to feeler gages of coverings of the TM-2, TM-3, TM-4, TM-4T models, techniques 159-261-2016 of checking of feeler gages of coverings of SaluTrjn and technique of the checking of feeler gages of coverings regulated by state standard 8.502-84 is carried out. It is shown that the first two techniques do not consider an accidental component of an error, and the third technique considers an accidental component incorrectly. All this results in a high probability of wrong recognition suitable any in fact a defective copy of the feeler gage or suitable devices can are mistakenly accepted as rejected. For increase in reliability of results of checking of feeler gages of coverings recommendations for their inclusion in the maintenance of a technique of checking are offered.

A nonparametric method for estimating the averaged quadratic functional of a multimodal probability density of a one-dimensional random variable is considered. The proposed method is based on the use of formulas for discretization of the range of values of random variables of Sturges, Heinhold-Gaede and the optimal discretization procedure. They are compared with the traditional approach based on the selection of the bandwidth from the maximum condition of likelihood functions. The conditions of competence of the proposed methods are determined.

The effectiveness of sequential criteria for testing two simple hypotheses is investigated in the paper. We propose an algorithm for calculating the refined boundaries of sequential Wald-type criteria based on the likelihood ratio. The proposed algorithm allows to find the boundaries of sequential criteria with a given accuracy at the lowest computational cost compared to previously known. The software allowing to calculate the specified estimates of investigated criteria boundaries using the minimum number of iterations is developed. The efficiency of the proposed algorithm is shown by some examples.

It discusses the advantages of using a pair of projective coordinate system, which is associated with the display in the image of an object of its form simultaneously with the measured field parameter. The projections of the image are displayed on the axes of the projective coordinate system, characterizing the speed (gradient) of changes of parameters in the object's size and serves as a condition for selecting the boundaries of the object. At the same time, the gradient of the measured parameter characterizes its change in the size of the boundaries of the meter and is the actual parameter of all measuring devices. It is shown that the use of pairing when performing navigation measurements provides for an increase in their accuracy and resolution.

A technique was proposed for processing information on the time variation of the temperature differences recorded in the course of the experiment in the form of array elements corresponding to certain values of the time points on the basis of mathematical modeling of heat transfer in a material sample (with respect to the method of a linear pulsed heat source) in order to reduce measurement errors in the thermophysical properties .