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  • The influence of basic chemical composition on the properties nickel-zinc ferrites, received by radiothermic sintering

    To date, the main method of mass production of advanced functional materials for various purposes is the ceramic technology. In the manufacture of multi-component oxide compounds using of ceramic technology is difficult to achieve high uniformity of chemical composition. For activation of the raw ingredients and make it more uniform use of chemical-tions (co-precipitation of salts or hydroxides, spray drying, Cryochemistry) and physical-tions (mechano-chemical, microwave, ultrasonic) methods. The paper presents the results of work on obtaining Ni-Zn-ferrite 2000NN radiation-thermal sintering. The influence of base composition and alloying additions on the electromagnetic properties of the ferrites. Confirmed the effectiveness of the use of surface-active additives To increase the density of the raw pieces and level parameters. We propose a model that explain schaya efficiency of dopants in the radiation-thermal sintering.

    Keywords: Nickel-zinc ferrite, radiation thermal sintering, base composition, alloying additives, permeability

  • Effect of additives on the properties of the alloy radio-Mg-Zn-ferrite obtained by sintering heat-radiation

    Promising absorbing materials along with a Ni-Zn-ferrites are Mg-Zn-ferrites, as they are also intensively absorbs electromagnetic waves in the frequency range from 50 MHz to 1000 MHz. The main advantage of the Mg-Zn-ferrite is used as an inexpensive raw material magnesium oxide. The paper presents the results of research to improve the efficiency of broadband radio-magnesium-zinc ferrite by increasing the contribution of the dielectric loss. The influence of alloying elements of the atmosphere gas and cooling after the sintering thermal radiation by absorption of electromagnetic waves. Confirmed cooling efficiency of products after sintering in an atmosphere with reduced oxygen partial pressure to increase the dielectric constant. A model is proposed to explain the increase in the dielectric loss ferrite during cooling in a reducing atmosphere.

    Keywords: radioabsorbing ferrites, microstructure grain boundaries radio measurement radiation thermal sintering

  • Estimate travel time based on the simulation of traffic flows

    To solve the traffic problems , namely the coordination of the movement of transport modes have been developed micro-and macro-modeling programs that predict traffic situations , to choose the most appropriate solutions for specific problems by using real data and statistics. The emergence of intelligent transportation systems, traffic simulation pushed to the fact that it has become one of the most used methods for studying the traffic flow, allowing to plan and predict the situation on the roads. The possibilities offered by the modeling of traffic flows , helping to simulate the situation on the roads, and it becomes a unique tool for understanding the complexity of transport systems. For precise work of model needs an indicator such as the time of the trip. Travel time - the time it takes to travel from one point to another , consisting of travel time and the stop time of the vehicle.

    Keywords: travel Time, microsimulations , flows, methods of intelligent transport systems

  • Determination of optimal cutting parameters are 10H12NVMFA

    A number of tests in cutting setup alloy 10H12NVMFA fulfilled. A number of studies for specification of process gas (oxygen) impact on cutting speed, also of cutting speed impact on cutting width were performed. Optimal cutting parameters specified experimentally.

    Keywords: laser cutting, cutting speed, cut sidewall, oxygen pressure, capacity

  • Laboratory and industrial tests of the unit for methods of non-destructive testing of concrete elements

    Scientific-research Laboratory and industrial tests of equipment for NDT methods ZBK".The Department ELA RSSU conducted a series of laboratory and industrial tests of the device developed at the Department of ELAH for concrete structure NDT methods. A schematic and a description of the pathogen fluctuations and semiconductor receiver, as well as diagrams of dependence of the passage of the amplitude of oscillations of the pathogen in the concrete structure of the axial load.The most important results are obtained dependence of the amplitude of oscillations in ZBK from the amount of axial load from the composition of fillers experimental sample.

    Keywords: Nondestructive testing, reinforced concrete constructions, the causative agent of oscillations, the receiver oscillation, the amplitude of oscillations, axial load.

  • The analysis of emergencies on linear part of the main gas pipelines.

    In article statistical data on failures on a linear part of the main gas pipelines are presented, the reasons of their emergence are defined. Standard scenarios of development of emergencies are provided, and also the basic principles of determination of frequency of emergence of failures are shined.

    Keywords: accident, analysis, diameter, linear part of the main gas pipelines, depressurization, scenario, pipeline.

  • Increase of the labor protection control system at the building industry enterprises

    In article are considered improvement of the organization of labor protection in the construction, based on a position of system risk management are considered.

    Keywords: The risk, injuring factors, labour safety, assessment of the state of labour protection in the organization, improvement of OSH

  • Applying the criterion of strength balance in designing replaceable inserts of cutoff and grooving tools.

    The issue of increasing the strength of cutoff and grooving tools is considered in the paper. The principle of strength balance of edge is offered to be used in designing the replaceable inserts. The calculations are made and the shape is designed for the strength balanced front surface of the cutting tools. The analysis of the received data is made and the regularities of the designed shape of the front surface of the cutting edge are established. Designs of replaceable cutting inserts made with a glance to structural characteristics and operating conditions of the cutoff and grooving tools are offered.

    Keywords: strength, cutting end, strength balance, cutting end, cutoff tools

  • The theory and practice of developing energy effective household refrigeration equipment operating at extreme high ambient temperatures

    The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

    Keywords: Герметичный компрессор объемного действия, система охлаждения, холодопроизводительность, перегрев, холодильный коэффициент COP, энергоэффективность.

  • Functionings of the public passenger transport analysed with the use of program complex "Pikas"

    Advantages of programmatic complex "Pikas" in a management a public transport are probed. Reports on work of public passenger transport are analysed. The example of drawing the results of analysis of data is considered.

    Keywords: public passenger transport, reports on work of transport, reliability of transport services

  • The paper considers the comparison of power consumption of Two’s Complement System and Residue Number System for digital signal processing applications. The comparison of these two implementations allows to conclude that, for these applications, the RNS uses less power than the TCS counterpart. The aim of the present paper is to highlight the reasons of this power consumption reduction.

    Keywords: residue number system, digital signal processing

  • Pilot studies of disperse structure of drop ablation when putting electroplated coatings

    In article questions of pilot studies of disperse structure of drop ablation are considered when putting electroplated coatings, the technique of performance of experiment is given, the design of experimental installation is considered, results of researches of dependence of height of take-off of drops of ablation over an electrolyte surface from their effective radius are given

    Keywords: electroplated coatings, drop ablation, bubbling, drop, height of take-off of a drop, effective radius of a drop

  • Механизмы идентификации точек контакта с клиентом как инструмент повышения степени удовлетворенности качеством предоставляемой услуги

    В данной статье приводятся примеры стандартных и не стандартных точек контакта с потенциальными клиентами, описаны механизмы их выявления, а также приведены примеры из практического опыта работы авторов по данной теме. Дано определение понятию «клиентоориентированнсть» с точки зрения клиента, и предложены варианты, где применима данная стратегия. Поднят вопрос о качестве обслуживания и что стоит за этим пониманием для клиента, чего он ждет от сферы услуг и на что рассчитывает. В статье рассмотрены этапы анализа точек контакта, приведены примеры влияния этих точек на формирование лояльного отношения клиента к качеству услуг. 

    Keywords: услуга, точки контакт, идентификация, стратегия, анализ, клиент, потребитель, контакт, точки взаимодействия, ориентация на клиента

  • Renumbering effectiveness for finite element mesh applied to finite element method for solving three-dimensional problems of solid mechanics

    This paper presents a comparative analysis of the effectiveness of the method Cuthill-McKee algorithm and fill-reducing ordering of a sparse matrix, based on multi-level nested dissection paradigm, developed at the Department of "Computer Science and Engineering," University of Minnesota. For short, we shall call the algorithm Cuthill-McKee CM, and the algorithm of the University of Minnesota — NodeND (Node nested dissection). This article uses a modification of the CM algorithm — RCM (reverse Cuthill-McKee), because in practice the reverse numbering index allows you to get a greater advantage than using a direct algorithm CM. The reason for using these algorithms are high speed computational algorithm, as it is necessary to solve the system proximal to the diagonal, the great acceleration of algorithms for solving FE problems using technology such as CUDA  

    Keywords: finite element mesh renumbering methods, three-dimensional mathematical modeling, elasticity theory problems, finite element method, finite element meshes

  • The conjugation line of step plate stress analysis

    The problem of stress concentration near step junction of sections in constructional elements and machine elements has been solved in this article by means of one singular integral equation. The formula for determination of stress concentration factor depending on fillet radius has been submitted.

    Keywords: Step plate, singular integral equation, conjugation line, stress concentration factor