Larysa A. Kosheva

National Academy of Sciences of Ukraine | ISP

The analysis shows that many parameters of industrial facilities are determined by computational operations on the results of direct measurements. Such measurements can be arranged according to parallel and parallel-serial structure of the measurement system. Considering that there are interference in the experimental study of industrial facilities...

Offered approach to the functional state of organism estimation as holistic system with the complex of interrelated, interactive, mutually affecting functional subsystems of homeostatic type, which may be described as statistically stable biomedical parameters complex. Offered integral index helps to estimate the respiratory subsystem condition usi...

It is shown that the probability of making the right decision on the compliance of the object with the norms depends on the measurement uncertainty associated with the result of the measurement control of the object parameters and the length of the tolerance interval. The decisive rule on the suitability (unfitness) of the object of control should...

A biological object (BO) can be defined as a physico-chemical system existing in the environment at steady state. Various anatomical, physiological, and behavioral adaptations have been developed to ensure a steady state in all BOs (from the morphologically simple to the most complex). They are aimed at the formation of various forms of adaptation...

The article continues to consider the possibility of maintaining the technological process in a statistical control state with the use of cumulative sum charts. A numerical method for estimating the statistical controllability of a process using a scheme of decision intervals based on a computational algorithm is considered. Cumulative sum charts c...

The article considers the possibility of maintaining in statistical controllable state the technological pro­cess with the use of control charts of accumulated sums. The principles of construction of these charts, features of the process disorder detection are shown. The feature of the control charts of accumulated sums is that, the decision regard...

As it is known, the real conversion characteristic of a measuring system is different than the nominal characteristic, e.g. due to lower sensitivity and (or) the presence of nonlinearity. In measurement control, particularly in the areas of the limiting values of tolerance interval, this can increase the effect of random variables, and consequently...

The quality of products depends on a stability of production process. In practice to identify reasons of the process degradation, the Shewhart control chart is typically used. At the construction of control X-charts, it is supposed that the dispersion of sample means in subgroups of data measured in process is caused by the influence of random fact...

The structural-algorithmic methods for improving the accuracy of quantitative chemical analysis are discussed. It is realized with the use of chromatography mass spectrometry measuring system. The idea is presented to exclude the influence of uncertainty at the stage of sample preparation. That allows, for the directly calibrated mass spectrometer,...

Applying an auxiliary quantity, homogeneous with the measured one, is proposed in the quality control of an object made with the use of measuring channel and decision-making module. The result of processing this quantity in the measurement channel is applied for the additive and multiplicative correction of decision limits. This allows to reduce th...

The application of robust statistical methods to assess the precision (uncertainty) of the results of interlaboratory testing of measurement method is presented. These results may include outliers. An usual rejection of such data reduces the reliability of evaluation, especially for small samples. And the robust methods take into consideration all...

Effect of outliers in measurement results on the accuracy of resulting estimate precision was studied by a robust estimation method taking into account all measurement results including outliers. As an example, the estimates of the common standard deviation of all numerical data from comparing tests of the measurement precision of some method in 9...

Measurement method of the ratio of two values describing the tested object is considered. In this ratiometric conversion the signal of output value of object and signal of its input reference value are sequentially passed by the same measurement channel. In the conversion of informative parameters of both signals the influence of additive, multipli...