The frequency divider for 8, operating in a range of input frequencies 8-18 GHz is considered. The function diagram is shown. The design and element base is described in short. The model and its experimental research is made. The technique and the block diagram of the experiment is described. Frequency dependence of transmission coefficient is measured. It is shown, that the frequency divider together with the two-cascade limiting amplifier has sensitivity minus 75 dBW, transmission coefficient is about 40 dB and nonuniformity of transmission coefficient is 1.64 dB. Level of the second and third harmonic of output signal is measured.

Keywords: frequency divider, centimeter waves, microcircuit, experiment, amplitude-frequency characteristic

The article considers the description of the design and construction of the Ultra high frequency mixer on a combination and slotted a microstrip transmission line. Presents the methodology and results of the experiment by analysis the amplitude characteristic. It is shown that the conversion loss equal to 9 dB, the dynamic range of not less than 60 dB, the upper limit of the linearity of the amplitude characteristic is 1mW.

Keywords: mixer, Schottky barrier diodes, microstrip line, slotline, decimeter range, amplitude response, Ultra high frequency.

This paper analyzes two types of automatic flow measuring systems, energy resources and water produced in Russia and in other countries. The main features of the division scheme constructionof for systems with the collection of telemetry data in Energosbyt and based on the counters with programmable smart cards and the ability to load switching. The advantages and disadvantages of such systems are considered. The article presents the basic elements of modern automated flow measuring systems, energy resources and water: counters and power, as well as data collection and transmission device; communication and communication equipment; A computer with special software installed; Software for data exchange measurements with other companies or electricity supplier; Software for predicting energy consumption and water.

Keywords: automated system of control and accounting of energy resources, wireless technology, multiple access to the radio channel, energy accounting device.

In article questions of system communications of performance indicators of management of a property complex of a higher educational institution are considered. For assessment of interrelations cognitive approach is used. The main influences of indicators at each other are revealed. The cognitive map, a matrix of interrelation of indicators are constructed.

Keywords: fixed assets, cognitive model, higher educational institution, cognitive map, performance indicator, capital productivity, capital-output ratio, fondovooruzhennost, matrix of interferences

The article presents a new design of reinforced concrete I-beam coverage with prestressed reinforcement, in which the ribs are stretched zone side ledges. This solution allows you to pick off high-strength prestressed reinforcement along the length of the element, thus increasing the ratio of reinforcement used in comparison with a standard solution

Keywords: reinforced concrete beam is equal to the resistance of prestressed reinforcement, combined prestressing

The development of the approach to multi-criteria robust optimization is presented in article by developing of a technological machines robust optimization method in a joint synthesis of a parameters and tolerances on them. The ability to search for optimal solutions is the advantage of the proposed method in the absence of functional dependencies for single quality parameters from the input parameters that have extreme character and in terms of the existence of intuitive perception about their best averages. A structural (functional) synthesis, a parametric synthesis and a synthesis of tolerances theories were used to develop a method. This article may be useful for researchers studying the problems of finding optimal solutions during the implementation stages of creating and implementing life cycle of technological machines and for researchers studying the problems of improving the quality and competitiveness of technological equipment in domestic enterprises.

Keywords: tolerance; parameter; synthesis; robust optimization; processing machine; area of optimum values

Article contains features of planning of the house with a penthouse and garage, the main pluses and minuses of construction. In article advantage use of frame option of construction is described.

Keywords: penthouse, garage, planning, drawing, low construction, heat, soil, framework, floor, warming

The results of numeral experiment you show that to split beamless slabs on finite elements without the use of absolutely rigid bodies true the following statement: with the increase of the size of the finite element area is required for calculating the reference valve As.2 is reduced. In all considered grids with the area of the transition from AЖТ to the plate in the form of triangles observed the effect of the increase required for the calculation of rebar on the distance from the face of the column, which in our opinion is illogical and difficult to explain. The creation of transition zones with finite elements having dimensions close to the size of the AЖТ leads to low results and can not be considered a good solution. The transition from AЖТ to the plate with a crushing grid to a size equal to half of the column cross-section gives results almost identical with the variant of splitting the plate into finite elements of size equal to the cross section of the column without the use of absolute rigid bodies. Given the complexity of the representation of junctions of columns with plate type 3хАЖТ practical importance is a variant of the partitioning plates (in the node pair with the column) on a square (close to square) finite elements, whose dimensions are equal to the cross section of the column.

Keywords: reinforced concrete slab, monolithic structure, the calculation of structures in Lira-SAPR

The latest requirements for specialist training in the system of higher education in the Russian Federation call for enhancement of foreign language learningand improving foreign language teaching. The aspect of interdisciplinary link between foreign language learning and cross-cultural communication is emphasized in the article. We suggest that in order to overcome cultural and language barriers we need to actively engage experts in cross-cultural communication in foreign language teaching, particularly, for science students.

Keywords: system analysis, motivation, methods of education, identity, military-patriotic education, patriotism and the needcross-cultural communication, professional and cultural competence, foreign language teaching, cultural and language barriers, cultures with

In the article information is presented about plastic properties of the heated porous powder-like materials from ferrous powders at tests on a bend. Dependence of tangential eτ, radial eρ is set and transversal ez deformations from initial porosity of standards and grain-size distribution. Experimental confirmation of hypothesis of flat sections and unchanging position of neutral surface is got at the bend of the heated porous standards.

Keywords: plastic property, heating, porous powder-like material, bend, tangential deformation, radial deformation and transversal deformation

Brain neural networks models based on the model of Hodgkin-Huxley and the inhibitory and excitatory postsynaptic potentials EPSP and IPSP balance problem are investigated. The problem of the inhibitory and excitatory postsynaptic potential balance, affecting such person's ability as learning, memory, movement, ability to analyze and so on has great scientific and practical importance. Implementation of the model Hodgkin-Huxley in the Matlab environment is made. Model modification is considered given the occurrence of a synapse in neuron system.

Keywords: mathematical modeling, EPSP, IPSP, ionic channel, modified model parameter, neural network model, Hodgkin-Huxley

Piezoceramics phases of (1-х)PbTiO3-xPbZrO3 is the basis of most high-performance piezoelectric materials. Electrophysical and mechanical properties of these materials can be varied over a wide range by varying the composition and by processing methods: the methods and modes of sintering conditions polarization. Topical to study the influence on the properties of PZT materials processing methods at the stages of manufacturing piezoelectric samples. In the role model of the object has been selected multicomponent system PbTiO3-PbZrO3-PbNb2/3Zn1/3O3-PbW1/2Mg1/2O3-PbSb2/3Mn1/3O3. Samples of piezoelectric elements for the study were obtained in two ways: in the first case, the sintering samples was carried out by the usual ceramic technology, and in the second by hot pressing. The grain structure was formed in both cases in the presence of the glass phase, the quantity of which decreases with increasing temperature, while in the first case, an increase in the velocity of the secondary recrystallization, and in the second of its suppression. It was found that regardless of the technology of the samples εT33/ε0, d33 and VЕ1 at high temperatures, due to the increase of grain and coercive field, which complicates the process of polarization. Maximum values εT33/ε0, d33 and VЕ1 samples prepared by hot pressing at 10 - 15% higher than if received by conventional ceramic technology.

Keywords: Piezoelectric ceramics, doping, combination, pezophase, piezomaterial

Strength properties of high-strength concrete on the basis of a mixture of high-calcium ash and cement crushed to a specific surface of 600 m2 / kg in the presence of a superplasticizer were investigated. It was established that at the initial stages of hardening of the binder, its strength strongly depends on the dosage of fly ash and it depends little on the water/binder ratio. After 28 days of hardening, the strength of concrete, depends more on the water-binder ratio, rather than on the ash content of the cement-ash binder. There was concluded that minerals of fly ash affect on strength of the cement-ash binder in later periods, and at the initial stages, its hardening is provided by hydration of the cement clinker. It was established that in high-strength concretes was no decrease in strength in later periods when using finely grinding ash containing a significant amount of free CaO.

Keywords: high-strength concrete, fly ash, free CaO, cement-ash binder, strength, dump strength

Thermoresistors nowadays are used not only as parts of temperature sensors and flowmeters but they are used as components of starting and control devices. Use of low-powered thermoresistors as starting and control devices parts needs a lot of devices that reduces equipment reliability. Current step-up running through motor-starting devices simplifies control circuit. For using thermoresistors in electric circuits with high-discharge rate it is necessary to use special constructions in order not to let termoresistor body be overheated. Thermoresistor expansion results in changing of thermal fields distribution pattern inside this semiconductor. The authors show calculated characteristics which let determine proportions and shapes of semiconductor subject to thermoresistor temperature.

Keywords: high power thermoresistors, thermoresistors of coaxial type, current density, temperature, analogy criterion, thermal conductance, temperature gradient, thermal field, stability criterion

The article describes the role of reduced order models (ROM) in MEMS design & testing, reflects their advantages in comparison with the finite element method (FEM) full models for real-time behavioral modeling of MEMS dynamic characteristics and versatile research of the objects' properties. The mathematical interpretation of the procedure for reducing the system dynamics equations order by switching from the full model presented in the form of state variables equations to the ROM state variables equations is given, the four existing scientific methods for reducing the FEM model order are presented in generalized form. The particularities of embedded ANSYS software capabilities application to automatically generate the ROM from the original full FEM model with lower computer power requirements and the preservation of the original model accuracy in the presence of only the structural mechanics are set out in details. Two equal algorithms for further work with the ROM in MatLab software in order to simulate the MEMS dynamics and study time and frequency properties of the model are presented: by designing the scheme consisting of prearranged Simulink function blocks and by writing an M-file program listing using the special MatLab programming language. Scientific novelty of the results is the combination of the methods for MEMS design (system of partial differential equations, ANSYS program) and behavioral modeling (system of ordinary differential equations, MatLab program) that can significantly reduce the complexity of the FEM model adaptation to the real-time modeling and eliminate computation errors.

Keywords: micro-electro-mechanical system, finite element method, behavioral modeling, reduced order model, ANSYS, MatLab