Approaches to the development of the system of audio synthesis and analysis are considered. Described ready to use cloud solutions and their drawbacks that can make engineers choose custom implementation in order to satisfy required use cases that are to be implemented. Considered an option of using optic fiber processors on the server-side application in order to optimize the music recognition flow. Considered various options of build systems that help to configure project build configuration which is especially important while developing cross-platform solutions. Therefore, technologies for developing cross-platform applications and systems are also described. In order to make the system work efficiently, it is important to build all the components in a correct way in order to provide a clean implementation and architecture. Additionally, there are considered approaches of server-side optimization of music recognition and search process by introducing load balancing and parallel matching.
The article presents the results of multifractal and statistical analysis changes in the characteristics of the multifractal spectra of a burner flame luminosity waveforms in industrial boilers at different loads and air supply levels to obtain a characteristic space for solving classification problems.
In recent years, a tendency is established to reduce the size of orbital spacecrafts while preserving their functional capabilities. The modern element base allows to create inexpensive Earth-sensing satellites having 1U-2U form factor, which are capable to form images of the Earth's surface with the medium spatial resolution. To perform synthesis of such optoelectronic remote sensing equipment, a relatively simple calculation technique is required. In this article, a technique has been developed to estimate an information system "Earth’s surface – atmosphere – television camera". It allows to determine the basic parameters of a lens and a matrix detector of the television camera, based on harmonization of their resolution and providing a given spatial resolution on the surface of the Earth. By using the proposed technique, a lens and a matrix detector have been selected. They provide geometric resolution of 25 m at the orbit with a height of 600 km. The resulting technical solution enables to fulfil applied tasks, for example, in agriculture, and can be implemented in a nanosatellite with the 1U-2U form factor.
Extraction method is still the most waste-free in oil recovery technologies, and in the case of low-soybean seeds, the most convenient. Therefore, with the impulse intensification of this process, it is possible not only to increase its efficiency, but also to achieve compactness of equipment, to reduce energy costs and to improve the quality of extraction oils. The methods of intensification of the extraction process from plant raw materials, which can be divided into mechanical, thermal, biochemical and electrophysical, are analyzed, generalized and classified. The hypothesis is confirmed according to which the intensification of the extraction process of oil with an increased content of tocopherols occurs due to the use of a pressure diffusion flux from the capillary-porous structure of plant raw materials under the action of a microwave field. It is proved that the proposed number of energy effects successfully correlates the effect of the pulsed microwave field on the mass-transfer rate when extracting oil from rapeseed and soybean seeds. Using the developed mathematical model of the extraction process with pulse intensification, it is possible to deduce the dependences of the mass transfer coefficient on the number of energy effects, the dependence of the mass transfer coefficient on the microwave power and other dependences of the dimensionless criterial complexes characterizing the investigated process with means of its intensification. A determining effect on the mass transfer coefficient microwave power is defined. Burdo (Bu) vaporization number, showing the ratio of the microwave power and power needed to convert the liquid into vapor, corrects and coordinates the experimental data with an error of 8-16.5%.
The article presents issues related to the diagnosis of the combustion process in industrial conditions. In order to ensure the efficiency of this process, it should take place under optimal conditions together with the limitation of the amount of pollutants emitted to the atmosphere. The Fourier transform was used to analyze the data from the combustion process that takes place under industrial conditions.
The article presents the results of multifractal and statistical analysis changes in the characteristics of the multifractal spectra of a burner flame luminosity waveforms in industrial boilers at different loads and air supply levels to obtain a characteristic space for solving classification problems.
KEYWORDS: Control systems, Mathematical modeling, Sensors, Switching, Process modeling, Systems modeling, Differential equations, MATLAB, Simulink, Automatic control
Dynamic stability of the adaptive hydraulic drive of the belt conveyor is studied with the help of an improved mathematical model constructed taking into account the physical processes that occur during the mechanical system of the conveyor under load changes. The parameters of the adaptive drive, which provide stable operation of the mechanical system in conditions of its overload, are determined.
The paper presents the research results to increase the probability of mass fractions measuring control of liquefied petroleum gas components, which has various temperatures by defining the density of the liquid phase. The thermooptical method for measuring control of mass fractions of liquefied petroleum gas components is presented in the paper. The measuring conversion function of the refractive index of liquefied petroleum gas was improved based on the proposed method. Based on research conducted it was developed the device of optoelectronic mass fraction measuring of liquefied petroleum gas components. The estimation of static metrological characteristics of control device measuring channel for the liquefied petroleum gas components mass fractions. The control device basic errors are defined as well.
Simplified model of image forming in spaceborne linear array sensors at arbitrary sight angles is proposed in this paper. On basis of evaluation of system "lens - linear array detector" modulation transfer function (MTF), the equations were obtained that allow you to determine spatial resolution on Earth’s surface. An example of pushbroom imager’s MTF determination at sight of Nadir and with different slopes of lens optical axis is given. Image quality changes, which accompany lens optical axis angular inclination were studied. More research needed to determine the impact of lens aberrations on imager’s MTF with arbitrary viewing angles.
The article considers the effect of wireless networks on the morphology of amniotic fluid (AF) to demonstrate possible risks involving pregnant women. The analysis of AF thesiograms after exposure of the model fluid to Wi-Fi, 3G and β- radiation was chosen as the research method. A comparative analysis of facies structures is carried out, and depth maps of the facies structure are created. This comparative analysis permits an evaluation of the efficiency of morphological changes. It is shown that AF control facies differ in the concentration of areas with a narrow peripheral area and ellipsoidal formations of crystalloids in circumferences center. After exposure of different types of radiation onto AF, the facies structures collapse and form their own conglomerates. The obtained results show that the considered types of radiation have a negative effect on AF.
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