The transition from the sample data to the total aggregate of the final volume and the analysis of this transition laws

Abstract

One of the most important features in science and practice for ensuring the machines and their components’ reliability is the use one of the mathematics’ areas - theory of probability and mathematical statistics. Most textbooks on the theory of probability and mathematical statistics deal with infinitely large aggregates. Since even the sample’s representativeness does not allow fully describing the entire aggregate, this should be taken into account at the stage of calculation and design. These facts led to the need for the transition from the sample data to the general aggregate data of the final volume. For this transition, we used the graphical method, which allows going from the sample, for example, with a volume of n=10-100, to the general aggregate Nc=103-106 using the extrapolation method.

Analysis of the micronization process effect on the amino acid composition in compound feed

“…Electrophoretic separation is performed using phosphate buffered saline under the conditions of the analysis. [18][19][20] For the analysis, three samples of compound feed were taken, differing in the recipe: sample № 1 -protein component: fish meal; sample № 2 -protein component: meat and bone meal; sample № 3 -protein component: mussels. All studied samples of compound feed were processed in a micraniser using three modes: power 450 W, 700 W and 800 W. All samples were crushed to pass through a 1.0 mm sieve.…”

The way to improve safety of pedestrian traffic at unregulated pedestrian crossing

“…According to the same statistics, the majority of collisions with pedestrians occur at night. Therefore, the third conclusion can be made that it is necessary to light the crossing at night or warn drivers in advance about the presence of pedestrians on it [6][7][8].…”