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.

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 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

The received results of modelling of a micromechanical sensor of angular speeds and linear accelerations are considered. 

Keywords: microsystm technology, element base, modeling, sensor, gyroscope, accelerometer

  This article presents an agent-based computational model of civil violence. In the model a central authority seeks to suppress communal violence between two warring ethnic groups. To describe model UML diagrams are presented. Article also shows a number of experiments with model which shows such benefits of model as guiding data collection, revealing dynamical analogies, discovering new questions and decision support in crisis situations.

Keywords: Legitimacy, agent based modeling, simulation, risk aversion, jail, neighborhood patches, radius vision, expressed political tension, latent political tension

Present the method for determining the optimal plan wood harvesting and hauling on logging enterprise. The method is recommended for use in enterprises applying cut-to-length logging. Optimization criterion is the minimum cost of harvesting and hauling wood. The method use will reduce costs and increase profitability for enterprise.

Keywords: logging area, base of forest resources, natural factors of production, primary wood transport, network transportation, costs

The way of а compиter assessment of qиality of the mix consisting of two and more components is stated. The algorithm for definition of factor of иniformity of mixing is based оп а clиstering of K-averages and realized in an applied Matlab package with иse of the graphic GUI interface. Check of this way proved possibility of its иse for an assessment of qиality of а miх.

Keywords: quality of а mix, uniformity of mixing, components, cluster

Circuit features of the electronics module for avalanche photodiode signal read-out, created on a basis of the specialized analog IC, are considered. Measurement re-sults of characteristics and noise depending on signal source capacity are given.

Keywords: avalanche photo diode, readout electronic, charge sensitive amplifier, shaper, electronics module

The paper reports on dynamical model of optimal biological resource exploitation with corruption. Particularly, it is allowed a fish quota increase after paid a bribe. The research has been realized with the sustainable development conception by the Pontryagin's maximum principle. A time moment, where the bribe is profitable, is considered. Fight corruption methods are presented.

Keywords: Mathematical model, optimal exploitation, corruption

  Method of an automatic recognition of sleep events is described. The method is based on analysis of amplitude histograms that are built on each of registered channels. The method is designed for sleep events, distinctive feature of which is expressed amplitude change that appears simultaneously on several channels. For example, "General body movement" and "Limbs movement" events. But this is not limited; method can be applied to other events, for example "Snore". Algorithm can be divided into three stages: histograms building and analysis, vertical analysis, results processing.

Keywords: PSG, sleep events, histogram, detection algorithm

The  researches results of possibility of  equations simplification of ring dynamic, which is based on two bearings with the help of task of special base functions system, in accordance with conditions of  zero transmissions in bearings points are represented. The calculation of the coefficients of the basis functions of a linear function and the polynomial of degree  two and three.

Keywords: ring based on two bearings, zero displacement at points bearings, system of basis functions

This article addresses options for building advanced of resistive voltage dividers (attenuator), providing a reduction in a given number of once input voltage in a wide range of operating frequencies. To correct the frequency error in the AT parasitic capacitance the load is proposed modified scheme with the special frequency attenuator correction, which allows for one to two orders extend the range of working frequencies the AT and increase performance.
Results of computer modeling.

Keywords: attenuator, a resistive voltage divider, the parasitic capacitance load correction capacitor, speed, large-amplitude pulse signal, the compensation effect, the upper frequency limit, broadband, analog-to-digital interfaces

In this paper, a new simple and accurate hybrid table/analytical model of the MOSFET drain current based on the interpolation of table parameters is proposed. This new hybrid table model has an accuracy similar to the pure table models but requires no complex parameter extraction. The drain current in the hybrid model is calculated as the product of the analytical model current and the correction factor approximated by two-dimensional series.

Keywords: MOS-transistor, MOSFET parameters, cryogenic temperature, parametric identification

Briefly discussed the theoretical model of the spectrum of RR intervals and its changes depending on the processes taking place. Made a device for measuring cardiointervalogramms (CIG). Obtained from the renting of data, of varying duration and frequency shall be recorded for further processing. The analysis revealed that the resulting spectrum satisfies the conditions considered in the theoretical model, and can be further analyzed with fractal characteristics. Such an analysis is of great importance in the diagnosis of the patient directly to the duration of the therapeutic procedure for the optimization of both time and intensity exerted influence.

Keywords: CIG; fractal series; the spectrum of RR intervals