A method of expanding the bandwidth and improve the performance of the differential voltage divider – attenuator (AT), which have parasitic capacitance on the outputs C01, C02. Wide range of transmission of the AT provided by introducing a compensation circuit C01, C02, which is achieving data quality indicators. Simulation results of desired are shown.
Keywords: a resistive voltage divider, differential attenuator, the parasitic сapacitance load, speed, upper frequency limit, analog-to-digital converters.
There is considered the problem of structuring indicators of the quality of information-computing systems, including transport. For each quality indicator is determined by the number of corresponding criteria. An algorithm for analysis of subscriber delays.
Keywords: quality, indicator of quality, quality criterion, computer information system of railway transport,subscriber delay
A system of purifying from dust for keramzit production and for another branches of industry was described. This system consists of apparatus with twisted flows.
Keywords: system, purifying from dust, keramzit
The authors suggest two approaches to constructing hypotheses about the interactions of proteins on the basis of the results of tracking the changes in their levels during the studied biological process. The first approach is based on the use of machine mining of biological texts, which are freely available on the Internet. The second is related to the execution of database queries on binary protein-protein interactions . To specify the experimental context in obtained protein networks, filtering of the protein entities on the basis of needed ontology from database Gene Ontology was used.
Keywords: text mining, data base, protein-protein interaction, protein networks
The results of modeling perception psychosemantic political order among students of Grozny in 2013. The study involved 120 people. Modeling based on the classical method of semantic differential Charles Osgood . A comparative analysis of average semantic portraits. Calculated levels of emotional perception of the political order. Perception of order in the Republic: 0, 423052 , Russia: 0.351604 . The basis of the binding model is a theory of two ideal points (extended method ideal point Coombs ): emotional attitude measured by proximity to the image of the real image of the ideal constructs in semantic space as a whole, rather than individual coordinates. In accordance with the general concepts of "good" and "evil" are calculated ideal "positive" and "negative" constructs. Further, under the theory of catastrophes developed model allows calculations on the ideal proximity to two points. Found that the level of perception described by the potential perception of the fourth degree. A stationary point - stationary states equation of the third degree. Potential itself depends on two factors: evaluation and activity. Based on a group approach, the method of calculation of the binding model and evaluation factors and the activity of the two proximity to two of the ideal points.
Keywords: political order, semantic differential, factor analysis, the emotional component, questioning, catastrophe theory, the theory of an ideal point
The article discusses a tool for development, simulation and analysis of multi-agent models - Repast Simphony. The research of both: the instrument and development process. Briefly describes the most interesting additional features of the runtime environment in Repast.
Keywords: agent base modeling, agent-based model, Repast, open source
Agent based model was developed. This model is showing processes of conflict, which is happening on the area of village Tarskoe. Conflict, which is called Osetino-Ingushskiy started in October 1992, and was not stabilized till today.
Keywords: agent base modeling, agent-based model, NetLogo
This paper present method of speed increasing differential and no differential driver (output stage transistor logic, emitter and source followers, the circuit of feedback amplifiers, etc.). Сonsiders conditions of correcting circuits design, which compensates the effect of the parasitic capacitance to its range of operating frequencies and the settling time of the transition process.
Keywords: drivers, emitter and source followers, operational amplifier, correcting circuit, performance, upper frequency limit, rise time transient, stability.
To assess the genotoxicity of environmental urban ecosystems appropriate to use indicators geno-and cytotoxic extract pilezii Multiflora. Geno-and cytotoxicity of the extract can be assessed by the level of chromosomal aberrations, as well as indicators of the mitotic index in the root meristem of pea, germinated on an extract pilezii Multiflora. When using indicators geno-and cytotoxicity in urban ecosystems should talk about the genotoxicity of the environment in the case of a statistically significant difference from the control of these parameters.
Keywords: biomonitoring, mutagenicity, test object, chromosome aberrations, cytotoxicity, genotoxicity
Measurement results of basic characteristics of electronic module based on two specialized analog integrated circuits depending on different square area silicon detectors using source of 239Pu alpha particles is given. Processing of current pulses typically consists to convert them into a voltage by charge sensitive amplifiers and reduce noise by bandpass filters. Earlier for work with avalanche photodiode we have developed, constructed and tested two electronic modules "CRP-MDL-1" and "CRP-MDL-2". During the measurements was investigated spectrometric channel response on exposure to ionizing radiation from a source of alpha particles 239Pu and test input signals, thus we determined basic technical characteristics including energy resolution and noise characteristics. As a result, research found, that the output signal has the following timings: rise time - 1 us (levels of 0.1-0.9), peak time - 1.4 us, fall time - 1.8 us pulse width - 3.5 us. The conversion factor of module working with silicon detector (area of 1000 mm2 and a capacity 500 pF) consists about 10.6 mV / fC, or 0.47 V / MeV. Integral nonlinearity of spectrometer path is not worse 0.4% in the range from about 0.1 to 3.2 V. The energy resolution was 89.1 keV line of 5157 keV. The experimental studies revealed that using an external low-noise transistors developed module can be used in the construction of standard radiometric paths. It is appropriate to use the developed design-circuit solutions for implementing 4-channel chip for multi-channel radiometric and spectrometric systems.
Keywords: silicon detector, charge sensitive amplifier, spectrometer, radiometric system, ionizing radiation
The article considers opportunities of model’s approach to practice of health keeping in the context of professional socialization of student’s youth in the modern uncertain social conditions. The author also suggests the health keeping factors model of professional socialization of student’s youth having a personal-focused direction.
Keywords: health keeping models, professional socialization, student’s youth, conditions of uncertain social, factor’s model, personal-focused direction
For miniaturized vacuum klystron type devices utilization of a double- gap strip-line cavity with suspended ceramic substrate is very promising.
The two-mode operating mode of such cavities practically isn't studied enough; so there is the great scientific and practical interest for research of electrodynamic characteristics of cavities during multi-mode operation that correspond to simultaneous excitement of anti-phase and co-phase modes in a double gap.
In this article results of the 3-D numerical modeling by means of the Ansoft HFSS code are presented, and also the experimental results of the electrodynamic properties of the half-wave double- gap cavity with the suspended ceramic substrate are submitted. Optimum parameters of this design, allowing to carry out simultaneous excitement at multiple frequencies with frequency rate (K=2) are determined.
In such cavity high values of unloaded Q factors isn’t need because dielectric losses and conductor losses can be compensated at the expense of the negative electronic conductivity that brought by modulated electronic beam. The operating mode with frequency rate can be used for increasing of efficiency of generating and amplifying micro devices with filament cathode and matrix field emission cathodes.
Keywords: double-gap cavity, electrodynamic parameters, mathematical simulation, resonance frequency, characteristic impedance, method of planned experiment
The paper presents a method of detecting distortions in the archival photo documents by texture analysis based on local binary patternss. The proposed approach consists of the following stages: pre-treatment and detection of scratches. Pre-treatment is used to reduce the effects of noise and small defects in the image. To recognize the class of defects using a support vector machine. The effectiveness of the new approach on several examples in the detection of defects.
Keywords: digital image processing, detection of defects, archival photographs, local binary patterns
The technique of space-time processing of acoustic signals with the use a convolution algorithm the purpose of application of which is the spatial positioning of the virtual soun sourse (auralization) is com=nsidered in this article. Also the reverberation chatacteristics of a modeled acoustic environment are take into consideration.
Keywords: auralization, HRTF, artificial reverb, room simulation, convolution algorithm, impulse response convolution, impulse response synthesis, dynamic convolution, complex filtering
The model of the ideal video camera is described, the form of the intrinsic and extrinsic camera parameters is showed. The relations between coordinates of a point in the world coordinate system with coordinates of this point on the image plane are given. The problem of finding extrinsic camera parameters from corresponded world and image points is posed. The error of found extrinsic parameters is estimated by simulation for several configurations of calibration objects consisting of a variable number of points on different distances from the camera and with different angles between them. On the basis of simulation results recommendations are given for the choice of the calibration object in order to improve the accuracy of the extrinsic camera parameters. The best results may be obtained with a configuration consisting of points that have a large angular distance between them and are posed on different distance from camera.
Keywords: camera calibration, extrinsic camera parameters, position and orientation estimation, calibration object