- 1. Modeling of drilling tool vibration in the process of drilling blast wells
- (Content №5 2024)
- ... performed to identify the bit in the frequency domain of the measured concomitant integrated vibration signal as a source of high-amplitude vibration. The modulated signal measured in the time domain at ...
- Created on 29 October 2024
- 2. Identification and suppression of signals of the rear lobe of the radiation pattern of the radar antenna
- (Content №3 2024)
- ... formed by the rear lobe of the antenna pattern without distorting the reflections created by the main lobe. For this purpose, a criterion has been developed, determined by the ratio of the amplitude of ...
- Created on 28 June 2024
- 3. Drilling wells taking into account the dynamic properties of rocks
- (Content №2 2024)
- ... analysis of the amplitudes and power spectral density of mud pressure oscillations of the mud and vibration accelerations in the drill bit cross section of drill string. Findings. The results are presented ...
- Created on 01 May 2024
- 4. Influence of relaxation on filtering microflows under harmonic action on the layer
- (Content №2 2024)
- ... on it and assessment of the influence of relaxation effects on the attenuation of the amplitude of initial disturbances within the framework of mathematical modeling of non-equilibrium plane-radial filtration. ...
- Created on 01 May 2024
- 5. Accounting for a positive, negative and zero sequences power in a three-phase unbalanced electrical system
- (Content №6 2023)
- ... power components are analytically determined, including the amplitudes of the oscillating power components. The need to take into account the oscillating instantaneous power components has been proven ...
- Created on 23 December 2023
- 6. Data analysis solutions to improve blasting efficiency in mining
- (Content №6 2023)
- ... model is developed based on the information including: explosion delay time value; average propagation speed of the vibration wave; maximum amplitude of the vibration wave. Originality. Basic data analysis ...
- Created on 23 December 2023
- 7. Use of backscattering ultrasound parameters for iron ore varieties recognition
- (Content №6 2023)
- ... of the received echo signals and quantifying their parameters. The amplitude of the echo signal and its spectral properties depends on the size and concentration of the scatterers, i.e., the structural ...
- Created on 23 December 2023
- 8. Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine
- (Content №6 2023)
- ... distribution of random freight flow according to various criteria of genuineness, a center of grouping, amplitude, velocity of rise and fall, and deviation. Findings. A perfect theoretical model was ...
- Created on 23 December 2023
- 9. Smart contracts and business process automation: the technical aspect
- (Content №5 2023)
- ... of the amplitude-frequency response of a vibrating rotary crusher in the software Mathcad. Przeglad Elektrotechniczny, 98(9), 14-20. https://doi.org/10.15199/48.2022.09.03. 5. Trachova, D., Belova, I., ...
- Created on 27 October 2023
- 10. Influence of the geotectonic regime on property formation of coal in the northern edges of the Donetsk basin
- (Content №5 2023)
- ... in the number of maceral wind group, is taking place in the direction of the growth of the total amplitude and average speed of the oscillating movements of the Earth’s crust during the accumulation of ...
- Created on 27 October 2023
- 11. Tectonics and gravity field structure of Central Kazakhstan
- (Content №4 2023)
- ... of magmatic formations. Originality. It is established that large gravitational minima are distinguished in areas with Hercynian folding, characterized by abnormally high amplitudes in the movement of ...
- Created on 28 August 2023
- 12. Predicting zones of increased water inflows in local folded structures
- (Content №4 2023)
- ... The research was carried out by constructing a map of local structures using trend analysis. The synclinal fold is allocated in the plan and its main parameters – amplitude and width – are determined. ...
- Created on 28 August 2023
- 13. Predicting of vertical displacements of structures of engineering buildings and facilities
- (Content №2 2023)
- ... calculations on mathematical modeling make it possible to reveal the distribution of the parameters of amplitude-frequency characteristics of the linearly deformable monolithic plate upper layer along ...
- Created on 28 April 2023
- 14. Using nonlinear ultrasonic measurements to estimate parameters of the sedimentation of slurry solid phase in thickener
- (Content №2 2023)
- ... of the process of propagation of ultrasonic waves in ore slurry, which is determined by the number and size of crushed ore particles in it, can be estimated by determining the amplitudes of several harmonics ...
- Created on 28 April 2023
- 15. Increasing the energy efficiency of modes of distribution networks with photovoltaic stations
- (Content №1 2023)
- ... (Fourier integral); decomposition of the current spectrum by amplitude-frequency component using Mdaq-14 hardware and software platforms and LabVIEW software; the method of data correlation analysis to ...
- Created on 25 February 2023
- 16. Minimization of dynamic changes in the tension of long products behind the outlet cage in rolling stock production in coils
- (Content №6 2022)
- ... Purpose. Justification of technical solutions as to the reduction of the amplitude and reduction of the dynamic change duration in the tension of the rolling stock at the exit of the output cage when moving ...
- Created on 25 December 2022
- 17. Energy efficient technologies for the mining industry
- (Content №6 2022)
- ... the loosening of coal layers by amplitude-frequency recommendation of acoustic signal by the APSS-1 system. E3S Web of Conferences, 109, 00122. https://doi.org/10.1051/e3sconf/201910900122. 11. Zberovskyi, ...
- Created on 25 December 2022
- 18. Integrated improvement of the efficiency of computer control system of spatial orientation settings of drilling facilities
- (Content №1 2022)
- ... and programs for tuning frequency-dependent components are proposed and brought to implementation. Keywords: inclinometric sensors, band-pass filter, peak frequency, amplitude-frequency response, phase-frequency ...
- Created on 25 February 2022
- 19. Variation coefficient of torsional vibrations of the connection nodes of vibrating machines
- (Content №6 2021)
- ... strength and accuracy. To develop a method for selecting the design parameters of the elastic band element of the package, taking into account the specified values of the amplitude and frequency characteristics ...
- Created on 29 December 2021
- 20. Gas flow measuring system using signal processing on the basis of entropy estimations
- (Content №5 2021)
- ... gas consumption value is determined by the parameters of information and measurement signals. Sensor signals interacting with the environment are traditionally processed on the basis of amplitude and frequency ...
- Created on 29 October 2021