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

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 problems of the modification of voltage inverter circuit are considered and using of a DC power source in the realization of function of boosting voltage converter.

Keywords: Active rectifier, voltage converter, inverting converter, multi-channel power supply , the conversion factor.

The results of differential thermal analysis of ammonium purpurate-ammonium nitrate system have been presented. The samples have been obtained of melt method. At the contents of ammonium purpurate more than 1 % in samples turn up replacement sequence of ammonium nitrate polymorphic transitions has been established.

Keywords: ammonium nitrate, ammonium purpurate , phase stable, gas-generating composition

There is the information of the use of belt electrostatic grain cleaner for the pre-sowing seed treatment with the purpose of their disinfection in this artcicle. The results of the treatment of seed mixture in electric field at the different variants of work conditions are presented. The specific expenditure of electric power on the percent of seed mixture disinfection was calculated.

Keywords: electric method, pre-sowing treatment, disinfection, electric field, belt electrostatic grain cleaner

Method of successive approximations was used to solve the problem of optimization of multispan continuous beam. Cross section of a beam was a welded I-beam.  By the variation of the width of the shelf we ensured that the maximum equivalent stress for energy theory of strength in each section is the same throughout. The solution is made numerically using complex MatLab. Bearing capacity of beams with variable stiffness along the length increased in 2 times in comparison with the beam with constant stiffness and the same mass. The proposed method can be applied to frames, taking into account the contribution of longitudinal forces in the equal stresses. Another effective way to change stiffness is to change the height of the wall of I-beam. In practice curvilinear shape of beams or shelves are not used because of complexity of manufacturing. They are replaced by the discrete form of cross section.

Keywords: multispan beams, work method, optimization, uniform strength, welded I-beam, variable stiffness

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

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

The titanium dioxide synthesized by an electrochemical method is a perspective material for use in solar elements and catalysts of cleaning of water and air environments. Regularities of electrochemical synthesis of titanium dioxide in glycerin dilute solutions (1:1) in the presence of ammonium fluoride at 2-14 V are investigated. Mathematical scheduling of synthesis process according to plans of first order with use of the complete three-factorial experiment is carried out, the adequate regression equations for formation processes of a titanium dioxide in the field of potentials 8-14 V are received. The electron microscopy method proved porosity of synthesizable layers of titanium dioxide. Water content influence in electrolyte on the speed of electrochemical process and potential size influence on titanium dioxide materials yield is established. It is shown that under the chosen electrolysis conditions electrochemical process is accompanied by the considerable chemical disolution of a titanium. Electrochemical processes in water containing glycerin are investigated by a cyclic voltammetry method. It is established that at electrochemical oxidation of Ti in water containing glycerin (1:1) porous TiO2 with a materials yield no more than 25% is formed.

Keywords: titanium, titanium dioxide, electrochemical oxidation, glycerin, ammonium fluoride, experiment scheduling

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

In the article is examined a hardware program complex on the basis of original sensors of power. This complex makes possible to register breath, pulse and locomotor activity of seriously ill bedridden patients and patients in coma without direct skin contact of sensors and patient for comfortable monitoring. The results of engineering tests are given. The exceptional indicator of system is a load capacity equal to or more than 500kg under the minimum grade value 10 gr. for every sensor. In the paper is demonstrated an availability of this complex for clinical medicine, computer stabilography, polysomnography and top level sport. In conclusion are pointed goals for further development of this complex.

Keywords: Stabilegraphy, polysomnography, strain-gauge-type power sensor, sport, comatose state

In article the new model of interaction of functional systems of various hierarchical levels is offered: from unicell level, to level over social objects. Feature of model is introduction in its structure: perception filters, the accounting of a strong-willed component, convenience of its application not only in the field of physiology, but also in sociology, psychology, value logy and other sciences describing behavior of reasonable objects. The analysis of signals carrying out exchange of information between functional systems of different level of hierarchy is carried out. The offered model allows explaining and predicting many psycho physiological patterns accompanying conditions of expanded consciousness, and arising at activation of reserve possibilities of the person.

Keywords: functional systems, super consciousness, activation of reserve possibilities

  The superposition conception of endogenous factors influence on the hem lymphatic occupancy in the organism vascular system is presented. The main influence factors creating the wave modulation on the pulse blood and lymph flows in the vessels and liquid’s moving in the around tissues are considered in the physical model. On the basis of the model is justified hemodynamic functional test with dosed compression effects on local areas of the body, in which the reaction is analyzed for changes in the spectrum of signals related to the changes exhibited by volume-dynamic changes in the vessels. Shows the functional scheme of the formation of the wave changes hem lymphatic, allowing planning of the study.

Keywords: Hem lymphatic occupancy, endogenous factors, compression action, spectral analyzing of signals

The article describes one of the possible approaches to the investigation of a technique of definition of quality indicators of vehicles and lifting-transport machines, examines the concept - combining numerical estimate of single and complex indices into a single composite index.
The following algorithms: the algorithm of finding the functional quality systems, represented by the linear form, with varying competence of experts, the algorithm modified method, allowing to make the transition from бифакторного distribution to мультифакторному, which is important when processing expert information; algorithm modified method, characterized by greater commonality and expanding the use of standard computer programmes at the decision of problems of estimation of quality systems on a computer.  

Keywords: The level of quality of complex technical systems, decomposition methods of technical requirements, functional quality, modified method,algorithm

Increase of investment appeal of municipality - one of the most important directions of social and economic development of territories. Local governments have real possibilities essentially to influence on investment climate of the territory. The most effective tool in this case is the investment passport of municipality - the complex newsletter, calculated for potential investors  

Keywords: city-planning, investment passport, sustainable development of territories, complex assessment of the territory