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  • The study of the plasticity of materials in the sedimentation of cylindrical heated powder samples

    The article presents the results of studies of the plasticity of heated powder materials from the initial porosity during the sediment tests. It was established experimentally that for the selected deformation conditions, the powder of iron powder PZh4S2 with the initial porosity of 20–30% has the greatest plasticity during the draft

    Keywords: plasticity, heating temperature, density of samples, specific work of deformation, sediment, measurement of samples, coefficients of height and transverse deformation, porosity, powder billet

  • Mathematic modeling of a thin rotating solid disk being heat and force affected

    Mathematic modeling of the state of a thin round disk being heat and force affected is performed. In the central part of the disk the homogeneous field of temperatures is formed. Within the deformation theory of a perfect elasto-plastic solid the quadratic plasticity condition is chosen. The relationships between the radius of the disk, the temperature of the central part of the disk and the external pressure which defines the appearance of plastic zones have been established. For different values of external parameters of the model the stress vector hodograph and the plots of stresses and equivalent stresses have been introduced.

    Keywords: mathematic modeling, an elastic-plastic solid, the plane-stress state, the deformation theory, thermo-elasto-plasticity, a high-speed rotating disk

  • Cleaning water surfaces from oil thin films

    The article deals with the processes of separation of thin films of oil liquids on the basis of rotary-belt type devices. The analysis of interaction of liquids and working body is made. The model of formation of oil films and their separation is described. the Studies create prerequisites for the development of engineering methods for calculating the design and operating parameters of the rotor-belt device for the formation of emulsion films and cleaning water surfaces from oil films, which is of great environmental importance.

    Keywords: emulsion, film, apparatus, oil stain, viscosity, water surface cleaning

  • Constructive solutions to strengthen the Foundation of a 24-storey residential building in Rostov-on-Don

    The article provides a technical solution to increase the bearing capacity and reduce the deformability of the subsiding base of a house. The design features of the fixed base and enclosing rows of bored piles are described. The article was published in the framework of the program of the International Forum "Victorious may 1945".

    Keywords: row, anchoring grounds, reinforcement, soil, cement, cementation, directional hydraulic fracturing

  • Model for estimating the complexity of physical schema for relational database

    In work area of application for quantitative metrics of databases are considered. Quality control of the database scheme is impossible without numerical indicators. Metrics of the database can be calculated it is automated that guarantees the accuracy and recurrence of such measurements. In article the model for assessment of complexity of the physical scheme for relational database based on metrics of the table of the database is offered. For the offered model by using the method of T. Saati, received coefficients which consider extent of influence of each metrics on complexity of the database. On the example of real projects for databases quantitative measurements of their metrics in MySQL are executed. The comparative analysis of the results obtained for the model of complexity estimates for various projects of physical schemes for databases and the amount of information contained in sql-scripts of these databases are described.

    Keywords: evaluation of complexity, database, physical schema, model, SQL, entropy

  • The main ways of scenario-environmental regulation of transport and pedestrian traffic

    “The article was published as part of the implementation of the program of the International Forum“ Victory May 1945 ”.The article deals with the problem of a reasonable redistribution of the pedestrian and transport space of the street, a balanced use of the territory in order to more efficiently regulate traffic and pedestrian flows, as well as to take into account statistical data on the use of street space, taking into account the time of day, the location and methods of using this space

    Keywords: pedestrian space, sidewalk, transport space, pedestrian, parquet, design of architectural environment, urban scenario

  • Analysis of the use of modern environmental technologies in construction

    Despite numerous advantages, green construction has not yet acquired significant proportions, since modern environmental technologies in construction lead to increased costs, and legislation is also not being adapted to new certification systems. This article outlined the main objectives of "green" construction. Considered the most important principles on which it is based. Analyzed the modern "green" standards for environmental performance of buildings, discussed in detail the methods for determining the rating of a building on specific scales. The advantages and disadvantages of environmental standards were also noted, groups of organizations in the field of “green” construction in Russia were considered.

    Keywords: environmental technology, green building, green standards, energy saving, energy efficiency, energy consumption, green building, renewable energy sources

  • Тechnological methods of increasing the durability of products from fine-grained hard-pressed concrete

    The article presents the method of appointment of the composition of the molding mixture, which is based on the calculation and experimental approach. The results of the research served as the basis for the practical implementation of the proposed technological method of increasing the durability of small-sized products made of fine concrete. The article was published in the framework of the program of the International Forum "Victorious may 1945»

    Keywords: workability of concrete mix, water-cement ratio, grain composition, raw materials, concrete, acidic medium, sodium sulfate, durability, small products, classification of defects, vibration mixing, technological methods

  • The rationale for the gain parameters of soil Foundation method of grouting using directional hydraulic fracturing

    The article describes the method of substantiation of the parameters of strengthening the soil base of a house by cementation through directional hydraulic fracturing. Also describes the work in the laboratory, which allowed to choose the necessary compositions of the cement mixture.

    Keywords: reinforcement, soil, comentaron, cementation, directional hydraulic fracturing

  • Problems and prospects of pedagogical process in the aspect of application of information technologies

    The article deals with the problems and features of Informatization of higher education. The problems of information technologies in the educational process are presented. The main advantage of it is that they contribute to the creation of an effective multi-sensory interactive learning environment with great potential for use by teachers and students. The factors influencing the process of Informatization of educational institutions are analyzed. In order to achieve positive results of the use of information technologies in training, it is proposed to introduce new subject programs in the educational process, which will allow to determine the methods of teaching and the conditions of the educational process. The use of subject programs will provide the user with the opportunity to build their learning algorithm.

    Keywords: information technologies, education, communication technologies, problems of training, features of training, programs, factors influencing process of Informatization of educational institution, conditions, advantages of information technologies

  • Improving the performance and performance properties of coatings formed under vibration mechanochemical action

    The article presents an analysis of promising research on the formation of vibrational mechanochemical coatings from the point of view of practical use in the real sector of the economy

    Keywords: combined methods of treatment, vibration treatment, the vibration mechano-chemical (chemical-mechanical) coverage webrevolve technological system, mechanical coating, fragmentary nature, plastic deformation, uniform coating, vibrowave impact, microstructu

  • The methods and means used by the expert-builder when conducting judicial construction technical expertizes

    Article is devoted to acquaintance with methods which are used in the work by experts-builders when conducting construction technical expertizes of building constructions, buildings and a construction. The list of the main methods used in researches by the expert is provided and also each method is considered in more detail.

    Keywords: Method, examination, expert, technique, fundamental principle, special case, graphic model, construction designs, construction technical expertize

  • Current economic issues of didactic support of education informatization

    The article highlights the issues of creating the information and educational environment of the university in modern education. Components for effective pedagogical process are presented. It describes the essence of the integration of ILE and education, as well as the direction of the integration of educational tools. The connection of the global trends in the development of an innovative economy and the requirements of the main directions for the development of IOS of the university is shown. The intra-university component is analyzed, which reflects several levels of interaction between various educational tools.The information presented in the article shows that the availability of pedagogically useful didactic support and the economic consideration of all factors and conditions ensures efficient functioning.

    Keywords: information and educational environment (ILE), development trends, ILE structure, pedagogical process, distance learning, integration, economic component of ILE, didactic support

  • Integrated three-axial accelerometer

    In article the design of an integrated micromechanical accelerometer of capacitive type is considered. The method with use of operation of self-assembly, constructed on the basis of the operated self-organization of mechanically intense semiconductor layers of GaAs/InAs is considered. This design was designed also a promodelirovana in ANSYS CAD. Results of model operation meet requirements, shown to present microaccelerometers, and give the chance to use them for further perfecting of structures of the given type. It is possible to use the obtained data in particular for calculation of the recommended parameters when developing techniques of projection of accelerometers and gyroscopes and also for development of more precise models of microelectromechanical structures.

    Keywords: MEMS, capacitive type, micromechanical accelerometer, design, sensor, sensor, mathematical model, GaAs/InAs

  • Ultrasonic in plasma-electrolyte process application methodology

    This article describes the combined method of plasma-electrolyte processing and subsequent ultrasound imaging of medical needles created from steel grade 12H18N9T. A functional diagram of an installation for medical needles plasma-electrolyte treatment is presented. A device for ultrasound diagnostics of microrelief in the obtained material is described. The actual task of ultrasound medical research is the quality of the processed tip. One of the ways to obtain deformation at the end of the needle is the electrolyte-plasma discharge method at the anode of a given material. In the course of the study, previously obtained results were confirmed, indicating that the plasma electrolyte process was caused by a fivefold or more excess of the cathode area relative to the anode area Sк≥5Sа. A study was conducted of plasma-electrolytic processing of steel grade 12H18N9T using anodic electrolyte. It is shown that in the plasma formation area occurrence around the anode, the current-voltage characteristic is practically independent of the electrolyte concentration. The patterns of formation of the depth of the hole at the end of the needle, determined by the process of melting the surface layer of the anode, which requires a uniform input of heat over a unit of time. The depth of the well and the wavelength of ultrasound are shown. It is necessary to apply roughness (holes) with a size of 10-1000 microns at different angles relative to the axis of the tube with a tip. On the research basis, a unique device «KLYON-1» was created, which performs the material processing and its control by means of ultrasonic radiation.

    Keywords: ultrasound, plasma, electrolyte, visualization, microrelief, needle, well