Abstract： Any sealing ring shall be able to effectively instantly convert a loading pressure on it into its sealing stress orthogonal to the pressure. For example, any self-sealing ring for opposing faces shall be able to exactly instantly convert a fluid pressure on its cylindrical surface into its sealing stress on its end faces. Firstly, what can effectively instantly performs the conversion is either a rigid wedge or a closed liquid; secondly, a common substance, with a Poissons ratio ranging from 0 to 0.5, has both some solid behavior and some liquid behavior, and the substance whose Poissons ratio value more approaches 0.5 more has full liquid behavior and volumes incompressibility and is abler to effectively instantly finish the conversion; thirdly, Poissons ratio is the substances orthogonal strain ratio of its non-loading direction to its loading direction, and compensable; fourthly, a different substance has a different Poissons ratio lagging behind its stress under a different temperature and a different stress; and hence any cavity for sealing rings, no matter how great their Poissons ratio at room temperature is, shall have such a compensating ability to result in the ring therein having a Poisons deformability of 0.5 ratio on being under pressure as to effectively instantly finish the orthogonal conversion of a loading pressure into a sealing stress.

Abstract： The article presents (on February 13, 2018 after the final correction of the article) the confirmed validity of the cosmic energy gravitational genesis of the strongest Japanese (for 2015 and 2016), Italian (for 2016), Greek (for 2017), Chinese (for 2008 and 2017) and Chilean (for 2015 and 2016) earthquakes related with the extreme (maximal and minimal, respectively) combined integral energy gravitational influences (in accordance with the established in 2012 global prediction thermohydrogravidynamic principles of the cosmic seismology) on the internal rigid core of the Earth (and on the Earth as a whole) of the planets (Mercury, Venus, Mars and Jupiter) and the Sun due to the gravitational interactions of the Sun with Jupiter Saturn, Uranus and Neptune. We have shown that the first direct detection of gravitational waves (on September 14, 2015) is located between the calculated date 2015.6833 (corresponding approximately to September 6, 2015 of the maximal (in 2015) combined planetary and solar integral energy gravitational influence on the internal rigid core of the Earth) and the date (September 16, 2015 according to the U.S. Geological Survey) of the strongest (in 2015 according to the U.S. Geological Survey) 8.3-magnitude Chilean earthquake (realized near 10 days after the date 2015.6833).

Abstract： The paper presents an analysis of the mechanisms of functioning of the new model of the wholesale electricity market new model. According to this, the work of stations based on the use of renewable energy sources (RES), in particular photovoltaic power stations (PPS), should take place on the basis of the announced hourly generating schedule by the owner of the station one day in advance. In order to ensure the accuracy of the predicted schedule, a study was carried out on the determination of meteorological parameters that most affected the generation of electricity at photovoltaic power plants. Results of cluster and regression analysis were conducted on the basis of meteorological data, measured at the station located in the Vinnitsia region.

Abstract： The fault detection of electric machinery is important necessity for stability of system. The noise signal of rotating machinery is utilized for early fault diagnostic. A measured noise signal is divided down by short time duration parts. Fault carrying frequencies are extracted from digitalized signal. Envelope detector and demodulation were utilized for identifying fault frequencies with their harmonics and sidebands. Automated noise analysis is dedicated to detect and report a machinery abnormal condition. Implementation was conducted with noise signals which were obtained from electric motors, turbine generators and bearing fault motors.