No 2 (2016)

Articles
THE ALGORITHM FOR DECISSION OF CONTROL SYSTEM SYNTHESIS PROBLEM BY THE ARTIFICIAL NEURAL NETWORKS’ METHOD
Al-Bareda A.Y., Pupkov K.A.
Abstract
In the presented article analytical methods of the solution of a task synthesis in a control system are stated. The author considers a neural network of Kokhonen which belongs to the class of networks of direct distribution. It has the only hidden layer of neurons presented in the form of a one-dimensional or two-dimensional lattice. By the author it is presented that the mechanism of cooperation realizes the principle according to which the most excited neuron strengthens (through synoptic weight) not only itself, but also spatially neurons, close to it.Article purpose - analytical methods of the solution of a problem of synthesis in a control system.
RUDN Journal of Engineering Researches. 2016;(2):7-16
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FEATURES OF USE OF STANDARDS IN TASKS OF TESTING
Demenkova T.A., Korzhova O.A.
Abstract
Actual problems of diagnosing of digital devices at all design stages, including the choice of the general structure of the project, functional verification, programming of crystal, formation of configuration, temporary check of separate blocks of the project and hardware testing are considered. Researches regarding development of standards of boundary scan and their appendices for various projects are conducted lately. Various modern standards in a route of automatic design, the digital standard of peripheral scanning for testing of multilayered printed circuit boards, the standard for reduction of costs of testing of VLCI with further possibility of reuse for other tasks and the tools for boundary scan allowing to make structural testing and testable design are submitted. The standards providing an intra circuit configuration of integrated chips, and their connection with elimination of malfunctions of prototypes and testing of quality of installation, assembly of knots and systems are considered. The standard defining classes of the built-in instruments of testing with the covers and mechanisms of management compatible to the previous standards is separately considered. On the basis of the analysis of the existing decisions in a route of design of digital devices of different function the solution of the problem of diagnosing taking into account specifics of the applied element base is developed. The developed route of design of digital devices on modern programmable integrated circuits with use of the last developments of standards of boundary scan will allow to hold testing of development on the basis of chips of various producers. The offered diagnosing method on the basis of the developed standards can be used also when developing various projects on the basis of domestic element base that is timely for the solution of the important problem of import substitution.
RUDN Journal of Engineering Researches. 2016;(2):17-25
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THE EFFECT OF HEAT TREATMENT ON THE MAGNETIC PROPERTIES OF THE AMORPHOUS COBALT-BASED ALLOY
Sokolova T.V., Zadiranov A.N.
Abstract
As the title implies the article describes effect of heat treatment on magnetic and mechanic properties amorphous soft magnetic cobalt-based alloy Co57Fe5Ni10Si11B17 obtained quenching from the melt. As you known, for amorphous ferromagnets are characterized by temperature instability of the magnetic and mechanical properties, which can largely degrade operation properties. To study the effect of annealing on the magnetic and physical-mechanical properties amorphous ferromagnet materials is of both scientific and practical interest, as it allows to determine the temperature application limits of the material and to optimize the magnetic properties under the influence of this factor. It is shown that heat treatment can lead to changes in the magnetic properties, and it does not cause structural changes within the resolution of x-ray diffraction. Noted the impossibility of the simultaneous receipt of all the necessary magnetic properties. After the annealing at 773 К and 823 K x-ray diffraction analysis shows a diffuse halo. Only after heat treatment at 873 K displays characteristic peaks that are the result of the last crystallization. Analysis of diffraction patterns allows us to conclude that the structural state of the alloy after heat treatment at 873 K allows us of the is responsible mixture of a solid solution based on α-cobalt and borides Co3B and (Co, Fe)2B. The crystallization temperature of the alloy according to thermal analysis is 833 K. Thus, the processes occurring in the temperature interval 373-473 are the result of topological and compositional streamlining, while increasing the annealing temperature above 473 joined by processes, resulting in fragmented appearance of fine crystalline phases. For the investigated alloy is characterized by intensive (4-5 times) reduction of permeability with frequency, which is natural in accordance with the model of damping of eddy currents. There was a trend to the re-growth of level of magnetic characteristics after annealing at 573 K.This effect is accompanied by intense embrittlement of the material. Appropriate heat treatment should recognize the annealing temperature of 473 К.
RUDN Journal of Engineering Researches. 2016;(2):26-32
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SOME OPPORTUNITIES TO RICE OF OPERATING FUEL ECONOMY OF PETROL ENGINE
Savastenko E.A.
Abstract
There presented some results of using of calculation-experimental method to appreciate an economy of engine during working on low loads and regulated by variation of displacement.
RUDN Journal of Engineering Researches. 2016;(2):33-37
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DESING AND SIMULATION OF A DOUBLE STAGE REMOTE EPICYCLIC ROTARY PUMP
Novikov V.A., Guseynov R.M., Azanov A.V., Azanov M.V., Pichuzhkin A.O.
Abstract
The main purpose of the research is to design a remote oil rotary pump with independent sections. During the study carried out CAD model of the oil pump was designed. Calculations of productivity, resource and check on durability have been made. The pump was developed for Honda CBR 600 engine and adapted to dry sump system connection. The prototype of the model was made using 3D printingto identify and eliminate the defects in design, and to optimize the layout.A Remote rotary pump was the result of this work so far, ready for manufacturing and followed by installation it on the vehicle.
RUDN Journal of Engineering Researches. 2016;(2):38-43
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CALCULATION OF PARAMETERS OF DIFFUSE LAYER OF CLAY PARTICLES AND THEIR INFLUENCE ON THE ELECTRICAL CONDUCTIVITY OF THE SOIL
Bezik D.A., Bezik E.I.
Abstract
The article discusses the structure of the diffuse layer of colloidal particles of the soil. The authors present analytical expressions for the concentration distributions for the exchange of ions and electric potential through the thickness of the water film covering the particles. Also given the expression for the specific surface conductivity of colloidal particles. The dependence of the conductivity of the soil moisture obtained in the experiment is compared with the calculated dependence.
RUDN Journal of Engineering Researches. 2016;(2):44-55
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GROSS CHEMICAL COMPOSITION OF LOESS AND THE AREA OF ROCKS AND THEIR ROLE IN THE FORMATIONOF GROUNDWATER MINERALIZATION
Agzamova I.A., Adilov A.A.
Abstract
Distribution of loess and loesslike breeds and main factors of forming of минерализации of subsoil and superficial waters of Uzbekistan are lighted up in the article.The processes of dissolution, lixiviating, are examined. Geological processes and phenomena, co-operation of geological and water environment of yavlyayuscheyasya by the main factors of forming of mineralizacii and chemical composition of waters.
RUDN Journal of Engineering Researches. 2016;(2):56-61
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PROBLEMS OF WATER RESOURCES IN CENTRAL ASIA
Donbaeva G.C.
Abstract
In this article are considered proposed problems of water resources management in Central Asia and proposed, some ways their solutions. Proved possibility of application of the integrated water resources management.
RUDN Journal of Engineering Researches. 2016;(2):62-67
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TECHNICAL AND TECHNOLOGICAL “RELICT” IN THE MODERN USE OF MINERAL RESOURCES
Vorobiev A.E., Tralbessi S., Ibragimov R., Vlasova A.V.
Abstract
The article technical and technological “relics” in the contemporary resource use problems of the modern oil industry, connected with insufficient level of development of techniques and technologies that, in the opinion of the authors does not allow to fully start the development of mineral resources. As examples of “relics” provided drilling tools used in borehole drilling; industrial losses that occur during the development of oil fields; oil pits. Special attention is paid to the drilling instrument used in modern petroleum industry. The article also refers to developing and existing equipment. There are works of Tarasov as fundamental for the further development of techniques and technologies used in drilling. The scheme of high-pressure water monitor and the scheme of technological capabilities of water-jet technology. The new equipment allows to destroy the rocks with the greatest efficiency, thereby facilitating the drilling process. While the destruction of the breed is on the outside (hydraulic impact) and from inside (acoustically-wave destruction). Together, these processes increase the efficiency of drilling.
RUDN Journal of Engineering Researches. 2016;(2):68-73
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ROLE OF MUD VOLCANISM IN THE SOUTH-PILTUN OIL AND GAS FORMATION OF SAKHALIN OFFSHORE PILTUN-ASTOKH DEPOSIT
Pavlinova N.V., Shakhova A.Y.
Abstract
This article provides general information about the geological structure of South-Piltun oil and gas deposit as well as it considers the role of mud volcanism and its scientific-practical significance in order to clarify factors of oil and gas deposit formation for South-Piltun further development.Petroleum expert’s wide interest and thematic justification connected with the mud volcanism and hydrocarbon deposit geodynamics correlation are associated with new scientific disciplines implementation and development in oil and gas geology and geochemistry, as well as with the oil and gas fields upstream methods in view of the previous achievements in a complex of Earth Sciences. Currently, without any doubt the elision systems (especially mud volcanism) are associated with hydrocarbon saturation (especially taking into account hydrocarbon fluids migration) and are abundant in the areas where tectonic activity is expressed as the folding. In addition to clarify the geological structure characteristics of the Piltun-Astokh field (South-Piltun area) the main aim of this article is defining the connection between mud volcanoes and Nutovo subhorizon hydrocarbon deposits, revealing of volcanic confinedness to the oil and gas deposits geodynamic conditions, as well as the definition of the territory tectonic structure features.Taking into consideration the previous years’ experience and data obtained next challenging tasks should be formed, the systematization and integration carried out suggest that fault different forms distribution nature and some other factors are responsible for direct correlation between mud volcanism and oil and gas fields geodynamics.
RUDN Journal of Engineering Researches. 2016;(2):74-81
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SOME ASPECTS OF RECONSTRUCTION OF FOUNDATIONS
Stasishina A.N., Abumahadi M.I.
Abstract
The choice of a rational, effective way of strengthening of foundations and bases is fundamental in the reconstruction of buildings. The strengthening of foundations of buildings means the work carried out as a consequence of the change of the geometrical dimensions of buildings, increment of permanent or temporary loads, the construction of underground facilities within the perimeter of the building, the strengthening of load-carrying ability lost as a result of suffusion, fluctuations of groundwater level and other causes, as well as resulting deformation of the structures and the wearing. Geological engineering survey and construction of the existing foundations must precede before the decision on the need to strengthen the implementation of foundations and deciding how to gain. With the help of a professional assessment of specialized companies carried out an independent examination, by means of which the results are determined by the reason of destruction of the foundation or, in the case of increasing the area of the building, are fundamental to the adoption of a package of measures needed to ensure the reliability of the foundation. Reconstruction methods are varied and the choice of a particular method depends on the factors contributing to induced damage of the foundation and the type of building and the grounds.The reliability of reconstructed buildings is provided by a joint effort of system, “base - foundation - underground construction”.
RUDN Journal of Engineering Researches. 2016;(2):82-90
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SOME RATIONAL METHOD OF OF RECONSTRUCTION OF FOUNDATIONS
Stasishina A.N., Abumahadi M.I.
Abstract
The choice of a rational, efficient method of strengthening pile foundations and bases is fundamental in the reconstruction of buildings in Central Russia. In this region the use of pile foundation is efficient due to the geological characteristics of the structure of the soil, and the presence of areas with weak water-saturated soils. The most optimal solutions of strengthening of bases and foundations are the ones that are the most using existing foundations and possibility of load-carrying ability of foundations. These solutions include the reconstruction of piles, reinforcement of foundation frame and consolidation of the earth foundation. Data solutions include: reconstruction of piles, pile cap foundation strengthening and consolidation of the subgrade. Strengthening piles follow the method given by enhance the pillars either by installing additional CFA piles. In order to strengthen the base are resorted to the method of immersing devices or other precast bored piles adjacent to existing piles. The basic method of fixing the subgrade is a method of injection of various solutions into the ground. Selecting the way to strengthen the foundation or base depends on the soil and its characteristics, as well as the loads transmitted from the upstream structures and dynamic effects.
RUDN Journal of Engineering Researches. 2016;(2):91-96
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BUSINESS CENTERS: CLASSIFICATIONS, MAIN PROPERTIES AND REQUIREMENTS
Alhalabi Z.S., Khalabi S.M., Khalil I.
Abstract
Business centers are becoming one of the most important architectural components of modern cities; the need of such centers became a demand due to the concentration of high number of businesses and international businesses within big cities, which created the demand of an architectural cluster of business centers that facilitates running business between enterprises and keep the high concentration of financial flow within one zone.To understand this concept; the article will first note the most important business centers of our modern world, the percentage of companies present, and the medium rental cost. The financial components plays a huge role when it comes to business centers; as they always need funding to be realized, and to be funded they need to be able to produce an equivalent value and profit; in other terms they need to be self-independent buildings, to be able to understand that we need to take a look at the current examples in our world.Moreover, it’s very important to understand the different types of business centers, as they provide a variety of different services not to mention the importance of understanding location requisites depending on the type of business center. In this article the main classification of business centers is explained briefly with an example.Urban requirements and importance is discussed briefly as it is important to understand the concept of CBD (Central Business District) and how it reflects on the hosting cities in many different ways. As our urban formation is changing slowly and architectural demands are changing, it’s important to plan for our future cities to fulfill the objective and create flexibility and comfort, and avoid future complication and unnecessary waste of cost.
RUDN Journal of Engineering Researches. 2016;(2):97-102
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MOBILE LANDSCAPING OF BUILDINGS
Shuvalov V.M., Saad M.M.
Abstract
The article considers the options of gardening in a densely built urban environment. It shows the role of green spaces, their impact on environmental parts. The main purpose is to analyze the reasons of influence of cities and human activities on the environment and solutions of this problem. The main problem, which is considered by the author: an analyze of the causes of environmental problems in the city; description of the main environmental problems of the cities; offer ways to improve the environmental condition of the city, through the introduction of mobile landscaping systems, which is shown on the experience in solving this problem in Singapore, with the possibility of its implementation in Moscow. An example of the ecological Park in Singapore, which is built according to the program of landscaping and environmental improvements of densely built-up city.
RUDN Journal of Engineering Researches. 2016;(2):103-115
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THE USE OF BAMBOO IN MODERN ARCHITECTURE OF COLOMBIA
Shuvalov V.M., Solanilla Y.M.
Abstract
In the article devoted to the use of environmental renewable natural material bamboo in the architecture and construction of buildings and structures. The main goal is to show architects the possibility of using bamboo in modern and traditional architecture. The main problem considered by the author: to show the advantages of bamboo compared with other structural materials defining the technical characteristics of the bamboo, to consider the basic architectural-constructional units and parts for structures made of bamboo. The author carries out an analysis of the work of architect Simon vélez and Simon Ocie Samper, which create the architecture by bamboo, with the use of computer aided design in construction. In the article notes that the modern design of the buildings and structures with bamboo has changed, in comparison with traditional notions of form. The application of new computer technologies allowed to carry out complex calculations and it was possible to exercise much more freedom in creating original forms.
RUDN Journal of Engineering Researches. 2016;(2):116-125
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NAShI AVTORY
- -.
Abstract
RUDN Journal of Engineering Researches. 2016;(2):126-127
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