The mathematical features of construction information and measuring health systems (IMS). Because biological systems are complex, not always well-defined structure, for their correct description and implementation of metrological analysis requires its imposition. Accordingly, the presentation described bioinstrumentalnoe MIS. Within the theory of metrological synthesis formulated the concept of IMS core. With the use of the mathematical theory of categories and object-oriented modeling describes the basic relationships between the elements of the core IMS. The basic position with regards to the construction of MIS based on its structure. A scheme of the developed system of environmental monitoring of water environment on the basis of an integrated assessment of water quality. The main components of the system were presented. Feature of the developed system is the consideration of non-fixed sources of pollution, which was made possible thanks to the developed method of integral evaluation.
Keywords: Measuring health system, object-oriented modeling, method of integral evaluation
The requirements to be met by a data acquisition system in terms of each of the problems to be solved. Presented electric concept developed biopotential amplifier with a total gain of 2000. The theoretical model of the spectrum of RR intervals and changes depending on the running processes. The analysis revealed that the resulting spectrum satisfies the conditions considered in the theoretical model, and can be further analyzed with fractal characteristics.
Keywords: Instrumental amplifier, biopotential, fractal index
In this article authors give information about problem of fiber-optical communication lines thermal-electric degradation and its consequences and study main reasons and factors which have an influence upon the degree of thermal-electric degradation. Possible and the most promising research ways are examined in this subject area; they let not only study this subject of fiber-optical communication lines thermal-electric degradation in detail but to solve this problem in whole.
Keywords: electromagnetic field, thermal-electric degradation, fiber-optical communication lines, FOC-cored static wire, kevlar, electrified railway
The features of circuit engineering and results of chip computer simulation which consists of 4-channel operational amplifier (op amp) and 2-channel electrometric voltage follower, designed for pre-processing of sensors signals in high-energy physics are considered.
The characteristic properties of designed op amp are the absence of current source in the input differential stage and the use of parallel high-frequency channel for increasing of the bandwidth and slew rate.
The results of experimental research that have confirmed the low sensitivity of the parameters of designed integrated circuits created on the field programmable gate array "FGPA-1.3" without the horizontal p-n-p transistors to the influence of gamma-irradiation and electrons with energy of 4 MeV are given.
Keywords: operational amplifier, field programmable gate array, voltage follower, sensor, sensing element, radiation resistance.
The purpose of investigation is to examine the effect of adaptation to difficult-house physical stress on the regulation of the vertical posture of man. For the analysis of the ability to maintain a vertical position used stabilographic hardware-software complex "Stabilan-1-02" (JSK Rhythm ", Russia). The ability to maintain a vertical position was evaluated in two static positions: 1) the main stand (OS) in the presence and absence of visual information, and 2) dip (PP) in the presence of visual information. Revealed that an increase of physical performance ability to maintain balance in static positions, especially in the complicated conditions (deprivation of visual information and static muscle tension) increases.
Keywords: Sports stabilometry, adaptation, vertical pose
Various non-invasive assessment of psycho-physiological and emotional state were analyzed: the fractal estimation of speech signals, the analysis of rhythmic EEG patterns and computer stabilometry. The results allowing prediction of the transition of the individual in a particular state, were obtained and objective criteria for determining the individual personality as a specialist were identified.
Keywords: Emotuonal speech, EEG pattern, attractor, suggestibility
The device for uninterrupted measurement of shaft wearing out by stuffing tightening is offered. The device for investigating sealing tightenings is worked out. Opticoelectronic systems are used for increasing the accuracy of measuring and for the purpose of uninterrupted monitoring in the construction of both devices.
Keywords: tribomonitoring, machines and mechanisms, optoelectronics, wear, seals
Technique for measurement of inductances (L) about 1 nanohenry or less one, is discussed. Two measurements of inductance L are executed. First one is executed for stub length l0, another - for stub length, shortened into N times. Formula for calculation of unknown inductance’ error has been obtained, where determination of unknown L with error closed to meter error has been succeeded by choice of parameters. It is shown that required measurement’s error of initial stub length for N=2 and N=5 is in tens micrometers’ range. Techniques for error’s diminishing have been considered. Estimation for basic stub length of 6,6 mm and 8,3 mm for N=2 and N=5 respectively has been executed.
Keywords: inductance, least-squares procedure, meter error, stub base
The influence of fine-dispersed mineral adds on the properties of cement stone and concrete has been investigated. The possibility of production of necessary strength concrete with small sand without increasing of standard expenditure of cement has been designed.
Keywords: concrete, strength, small sand, add, mineral powder, cement, reduction, expenditure
Some of the issues of a system approach to the development of composite antifriction coatings and also the phase desordered condition of the surface are considered
Keywords: tribology system, structural-phase disordered condition , composite coating, friction
Submitted manufacturing operations performed at the landfill site TOP, their main types of negative impacts on the environment. The conditions of formation and emission of biogas generated in the interior of the landfill body and having a pronounced toxic effects. The dependence of the specific biogas yield for the period of his active stable generation.
Keywords: Solid waste consumption, landfill disposal TOP, biogas, wet waste, environmental safety
In the article there are considered the problems arising in the building of systems of diagnostics and recognition, provides methods to detect deviations in functioning of the various objects.
Keywords: Diagnostics, еmpirical mode decomposition, extreme filtering, time-frequency distributions
The article examines the development of biogas production in the Altai region. Indicates the need for wide implementation in ho-agricultural practice of farms renewable energy. Provides information about the main raw materials and specific yield volumes of fuel out of it. Argued that there is a potential for the construction of facilities for the production of biogas based on large and medium-sized livestock operations. This can provide up to 20-25% of the demand in the Altai region gas fuel. It is noted that the implementation of this project requires coordination of government support measures with the mandatory inclusion of livestock facilities for biogas in the construction or reconstruction of livestock enterprises. Also priority for biogas energy in the Altai region called the creation of biogas plants with low capacity. They can be used by individuals to meet the challenges of energy supply and heating. Refers to the importance of their implementation in some areas Altai region.
Keywords: biogas, bioenergy, renewable energy, biofuel, energy-saving technology, aricultural region
The paper discusses the features of method of extension of circuit’s operating frequency range of the source and the classical emitter voltage follower (VF). The features of this method based on the effect of the mutual compensation of the parasitic impedances are considered. Problem of improving operation speed of VF with output capacitance and reducing the time of establishment of transient at pulsed input voltage are discussed.
The simulation results of VF in Cadence on model of SiGe integrated transistors are given. This shows that with capacitive load high-frequency cutoff, the time of establishment of transient and the slew rate improved to tens - hundreds of times.
The results of investigate complement of methods of improving operation speed of the classical stage with a common drain and common collector.
Keywords: operating frequency range, source follower, emitter follower, operational speed, broadband amplifier
Are considered method of reducing one of the most essential components of the voltage offset Uvo operational amplifiers (op-amp), executed on classical architecture with current mirrors, which is linked to the change current gain of base (β) bipolar transistors in conditions of temperature and radiation effects.
To solve this problem in the basic architecture of op-amp is entered special corrective multipole, which will provide low-current asymmetry in coordination of input differential stage (DS). The method is applicable to op-amp, which is inexpedient to make any adjustments to the original structure of the DS.
The analytical expressions determining basic parameters the compensation circuits Uvo, and also shows the tabular data that simplify the choice of standard functional components of precision op-amps.
Keywords: microelectronics, circuit design, a differential amplifier, operational amplifier, voltage offset, temperature drift, the effect of radiation on the zero level