The mathematical model and the simulation of metal-semiconductor contacts with Schottky barrier volt-ampere characteristics taking into account electrically active impurities inhomogeneous distribution in semiconductor are proposed in this work. The developed mathematical model takes into account quantum mechanical effects during the charge carriers transfer in metal-semiconductor junctions with Schottky barrier and allows forecasting their volt-ampere characteristics. The simulation results meet the experimental data from famous literary sources. The developed mathematical model can be used in computer aided design of integrated circuits elements.

Keywords: Schottky diode, potential, Poisson equation, volt-ampere characteristic

Possibilities of using mathematical programming methods for obtaining optimal solutions of structural units were shown herein. Method of personal optimization based on monotonicity property of the used relations was applied as optimization algorithm. Advisability of using mathematical simulation methods when providing complex safety of construction facilities and reduction of breakdown occurrence is emphasized.

Keywords: optimal design, mathematical simulation, complex safety, personal optimization, plate structures, risk.

Computer-aided diagnostic system of semiconductor structures for the tested structures volt-ampere and voltage-capacitance characteristics measuring at different temperatures in wide ranging bias voltage was made in this work. Computer-aided diagnostic system of semiconductor structures allows to define parameters of deep-lying levels, profiles of alloying impurities distribution, charge carriers life span, surface states energy spectrum density with high reliability and efficiency and can be used for processing and optimization of technological modes for solid-state electronics structures generation.

Keywords: diagnostics, dynamic spectroscopy of deep-lying levels , spectrum, deep-lying levels, surface states, profile of impurity distribution

The article analyses the processes of social life technologization, their role in the development of contemporary society and mankind as a whole. The main trends in the development of social technologies are described in the article. Special attention is given to the scientific approach, the use of scientific methods in the technologization of social actions, the modeling of social processes and technification of social work. The article is of a research nature because it identifies the main problems of a research subject associated with various aspects of social technologies and their potential application in social life. It explores the use of both universal and specific social technologies; explores their phasing and sequencing. The article proves the impact of knowledge of theoretical aspects of social technologies on research in sociology and social philosophy, as well as the practical application of social technologies, allowing one to use their research capacity in social practice.

Keywords: social technologies, technologization of social life, modeling of social processes, sequencing, phases of social technologies, universal social technologies, specific social technologies

The problem of the current method of mass cadastral valuation of land settlements with the type of permitted use - for individual housing. This problem is that the regression analysis used in the present method does not include the cost depending land on their mutual position. A study of the source data proved that the market value of land depends on the degree of proximity of land from each other. On this basis, the work was proposed to use a new, more correct cadastral valuation method - the method of geostatistical interpolation (kriging).

Keywords: cadastral value, geostatistics, regression, interpolation, kriging

The article discusses modernized algorithm of timer for the user library for PLC, through which may increase the efficiency of the use of funds for programming PLC, as well as reducing the time needed to create the program. 

Keywords: algorithm of timer, user library, modernization of timer, universal timer, Codesys,CFC

In this work we have investigated the structure of individual single-walled and multi-walled carbon nanotubes by high-resolution electron microscopy and electron diffraction. To grow carbon nanotubes we used a catalytic chemical vapor deposition method. It was shown, that this synthesis protocol gave in general single-walled and double-walled carbon nanotubes with a high level of crystallinity. The diameters of the nanotubes were in the range 1.5 - 7 nm. We also observed that there was a certain level of amorphous carbon deposited on the nanotube surface during the growth. In this work we also present the structure analysis of the double-walled carbon nanotube by means of electron diffraction. We show that the structural date derived from electron microscopy and electron diffraction agree within the experimental error.

Keywords: Carbon nanotubes, electron diffraction, electron microscopy

In the article a double-gap cavity with anti-phase excitation that has wide application in designs of floating-drift klystrons is considered. One of the ways of reduction of time during machine design of klystron’s cavity is using of the simple analytical expression, allowing to determine the main klystron electrodynamic parameters with a sufficient accuracy for practice. In the article we presented the results of physical and mathematical modeling of the double-gap cavity, the corrected mathematical models were introduced that can be utilized in programs of a prompt optimization of klystron's type devices. The technique of creation of approximate mathematical model in this case was reduced to definition of basic analytical function, and the subsequent approximation between experimental and calculated data by means of a method of planned experiment. In presented work the analysis of adequacy was carry out. Analysis revealed inaccuracy of a resonance frequency of an anti-phase type in chosen ranges of change of influencing factors doesn’t exceed 1%, characteristic impedance- 5%. The received analytical ratios allow carrying out quickly calculation of parameters of the cavity, without labor-consuming and expensive experiments and calculations.

Keywords: double-gap cavity, electrodynamic parameters, mathematical simulation, resonance frequency, characteristic impedance, method of planned experiment

The article considers the essence and specifics of state regulation of local markets in the region. With respect to implementing the principles of sustainable development highlights the key tasks of state regulation in the process of formation and development of local markets, determine the forms and methods of state regulation.

Keywords: region; regional economy; sustainable development; local markets; trends

The atricle considers the problem of finding the best carrier. It describes by the expert method of solving the problem, as well as an algorithm for selecting a carrier. Describes a software module implemented with the involvement of technology ActiveX, which greatly simplifies the process and reduces the development time of projects. The proposed application allows you to define a list of the best carriers, ranked by rating according to the user's request.

Keywords: Carrier selection, expert method, weighting coefficient, rank, user application

The results of analysis of engineering solutions with main piping’s wedge valve design for the plants of nuclear power, thermal power, oil and gas industries, based on the realized patent search, are given. The tendencies of engineering solutions development for wedge valve design are identified

Keywords: valve industry, pipeline valve, shut-off valve, wedge valve, main piping

Identification of railway vehicles is relevant for the conversion from automatic control systems with manual data input to automatic modeling environment of train and vehicle. The most effective and economic inventory number recognition is optical recognition. But there is question about veracity in such technology. This paper represent the qualitatively new approach for optical recognition based on building integral robust constructive features of vehicles and allowed to significantly increase level of recognition veracity. Proposed technique investigated in introduction subject of automatic vehicle number recognition system (ARNV).  Computational experiments demonstrated relevance of proposed technique for using in optical recognition of vehicle numbers.

Keywords: Automatic systems, number identification, vehicle, optical recognition, ARNV, robust features

The article suggests improvement of increment borer construction by means of installing a ratchet into its handle. The suggested technical solution will allow increasing the efficiency of work with a borer while taking core of wood.   

Keywords: Increment borer, preparatory works of forest logging, tree age, ratchet, core.

The core of any economy is the production, creation of economic output. No production can not be use. That's enterprises produce products that perform work and services, ie provide the basis for consumption and increase national wealth. Matter how well the company what their financial condition, depends on the health of the economy and the industrial might of the state. If present schematically the entire system of economic governance in the country in the form of a pyramid, its base are businesses. State, regional, departmental management can be considered in relation to the processes occurring at the level of the enterprise, just as the add-on, secondary phenomena.

Keywords: innovation, industry, economic structure, market, sustainability, innovation development

Estimates by the Finnish experts of prospects of introduction of a visa-free regime of Russia with Finland are considered. Estimates of its influence on business life of Finland are given. It is shown that 60% of respondents expect obtaining benefit by the companies from introduction of a visa-free regime, about 30% don't expect any consequences, and only 8% assume emergence of problems.

Keywords: visa-free mode, business life, Russia, Finland.