The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This article is devoted to solution of stabilization problem of the load, which suspended on a crane rope. The non-linear differential equations, which describing of behavior of “suspended load“ system are given and the problem of stabilization is formulated. For the purpose of conditions check of a solubility of a synthesis problem research of mathematical model of system is conducted. The algorithm...
In this article technical means for carrying out researches of dependence of biopotentials of plants from action on them various stressor on the example of temperature and the results received in the course of researches are described. Ways of completion of experimental installation and the direction of development of the plan of researches are discussed.
Signals recorded by seismic sensors, formed by the superposition of seismic waves propagating in the ground by multipath paths. Therefore, they obey a Gaussian distribution, and spectral-correlation properties allow the use of Markov models based on recurrent linear prediction mechanism. Models of this type are used in various fields, such as processing of speech signals, sonar systems, as well as...
This paper is considered on the problem of the evaluation of innovation at the meso level. Business processes, which is involved in the evaluation, is identified and described by CASE-tools. The results of evaluation of innovation of 82 Regions using the developed information system are listed.
The problem of regulation for a DC motor with autonomous voltage inverter is discussed. The considered control system consists of two feedback loops. In the first one, the armature current control for a DC motor is provided by means of pulse-width modulated control of autonomous voltage inverter. In the second one, DC motor speed control is maintained. Proportional-integral (PI) controllers are designed...
In this paper, the parametric and nonparametric approaches to construction of probabilistic reliability model with one-shot device testing data are considered. Such data are referred to as current status data, which include right censored and left censored observations (no complete observations at all). Statistical properties of maximum likelihood estimates of distribution parameters have been investigated...
The paper considers the physical model of radiation heating of the heterostructures during molecular beam epitaxy‥ It is shown that the temperature of the heteroepitaxial semiconductor with a band gap smaller than that of the substrate increases with increasing of the film thickness. Mechanisms of the temperature change of the Ge/Si heterostructure depending on the film thickness Ge are proposed
Features of a method of synthesis of ferromagnetic frequency multipliers of the harmonious fluctuations, connected with optimization of design data of nonlinear throttles and transformers are considered.
Is offered the model designed to modeling the operation of the digital jamming cancellations with non-identical frequency responses of the receiving channels. Results of digital modeling are presented. The algorithms are designed to align the non-identical frequency responses of the receiving channels for jamming cancellations, are discussed.
This paper focuses on the use of cepstral analysis in vibrodiagnostics. Also there is shown an overview of the main properties of the cepstrum and results of using cepstral analysis on data, obtained as a result of the gas turbine engine.
This article is about the interference elimination in the electrical minerals prospecting system. The authors describe a new method of obtaining a mathematical model of the slow interference. This model is derived by using Yule-Walker linear prediction method of 8th order. Graphs are drawn for each stage of the algorithm: the plot of the signal in a rare time, the plot of the interpolated signal,...
There has been an analysis of the influence of the choice of the color space, a measure of comparison of histograms and their size on the performance of the detection algorithm moments scene change. It is shown that the choice of HSV space and histogram intersection method can reduce the error rate in detection of moments, when scene changes and the effective size of the histogram. The experimental...
It was studied microplasma breakdown statistical delay in the green GaP:N light emitting diodes. It was detected unusual strong dependence of deep level traps on the avalanche breakdown statistical delay after changing their charge state with the voltage decreasing on the p-n junction in the temperature range 300–380 K. It was found out four deep level traps and determined their parameters.
In many socially important institutions (universities, clinics, kindergartens, etc.) has seen a rapid growth in the number of devices with an infrared receiver, equipped with a remote control (RC). The problem with this equipment is that its full functionality, as a rule, can only be obtained through the remote control, so if you do not have access to the remote device can not be used in normal mode...
Controller design problem for testbed of strength test for aviation builds is discussed. The description of the stand equipped by electrohydraulic drive is presented. Results of experimental researches of dynamical characteristics for the stand are shown and, as the result, the mathematical model of the given stand has been received by results of experimental tests. Proportional-integral (PI) controller...
In this article the program for calculation of the areas of any form figures on images with possibility of input and editing of arithmetic expressions for the subsequent data processing about the received areas is described. The program is applied to definition of a mass fraction of the connected moisture in the field of research of meat and meat products, determination of the full area of leaves...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.