Developed a set-theoretic model of the problem of assessing the quality of housing and communal services population, which allows to determine the necessary components and characteristics involved in the formulation of the problem, forming the input data. For resolving the problem of redundancy of indicators to assess the quality of a procedure was developed to identify a minimum set of indicators. A procedure of the analysis of cognitive maps, including recommendations on elimination of redundant indicators.
A set-theoretic model of the problem of assessing the quality of housing and communal services population is developed, which allows determining the necessary components and characteristics involved in the formulation of the problem, forming the input data. For resolving the problem of redundancy of indicators to assess the quality of the housing and communal service of the population, a procedure was developed to identify a minimum set of indicators. A procedure of the analysis of cognitive maps, including recommendations on elimination of redundant indicators, is considered.
The article deals with the problems of studying the process of dispersing liquid fuel and water-fuel emulsions, in particular the characteristics of the dispersed spray in high-potential electrostatic fields. The paper deals with the development of a research method for disperse characteristics of liquid fuels, in particular, the changes in the diameter of the spray particles of liquid fuels and water-fuel emulsions based on them, depending on the intensity of high-grade electrostatic field. These studies are relevant in the creation of new devices based on new dispersion, which are not currently used for fuel atomization and combustion devices, in particular based on the electrostatic dispersion. The currently available methods for assessing dispersion are based on the evaluation of the particle diameter, which are formed by dispersing (particle breakage) of the liquid fuel. The views expressed in the course of the study suggest that the dependence of the particle diameter from the electrostatic field can be estimated not only in case of the destruction of the particles (dispersion), but also in case of the formation (growth) of drops during the expiration of the capillary. In order to confirm the provisions the authors developed the installation and technique to study the changes in the dispersion in dependence with the voltage value of high potential electrostatic field. The results of experimental studies are presented and experimental graphics are built for F5 bunker fuel and water-oil emulsions with different concentrations based on it. On the basis of the experimental data processed by correlation analysis method the authors obtained the mathematical model of diameter changes of the particles under the influence of an electrostatic field, which corresponds to the theory of electrostatic dispersion. The developed technique greatly simplifies the determination of the disperse characteristics of liquid fuel in case of electro-static dispersion.
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