No 4 (2016)

Articles
ACCURACY OF STATISTICAL CALCULATION OF RANDOM ERRORS OF SPACE TRUSSES
Lebed E.V.
Abstract
Probabilistic treatment of the deviation of real dimensions of bar elements from their nominal values leading to the errors in geometry of structures is presented in the paper. It is noticed that the distribution of errors in framed structures is of normal character.The main principles of statistical modelling of the real form of a space truss and estimation of errors are discussed, and the arguments presented for using the standard deviation as the primary statistical parameter of errors. It is demonstrated that the accuracy of calculation of standard deviations of errors must be accounted for in engineering problems. Based on the numerical values of the chi-square distribution the dependence is obtained between the accuracy of the standard deviation and the sample size for different levels of reliability.
RUDN Journal of Engineering Researches. 2016;(4):7-15
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PLANING FOR ON-ORBIT SERVICING OF VARIOUS SATELLITE SYSTEMS
Baranov A.A., Razoumny V.Y.
Abstract
The problem of planning the circumnavigation of space objects requiring servicing is considered. It is assumed that system of base stations for servicing the given array of the satellites on different LEO orbits has been deployed. For a fixed time it is needed to flyby each satellite which requires servicing. The servicing is conducted using the detachable modules (DM) from the base stations. Basing on the RAAN deviation portrait for all serviceable satellites and base stations it is defined which DM should transfer to the vicinity of which satellite in order to have the lowest DM velocity budget.
RUDN Journal of Engineering Researches. 2016;(4):16-26
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THE ENERGY EQUIVALENCE PRINCIPLE FOR CALCULATION OF WATER SUPPLY NETWORKS WITH MANY AREAS
Shcherbakov V.I., Nguyen H.C.
Abstract
Existing methods of hydraulic calculation of water supply looped networks is considered mainly transmission and distribution lines, without considering dead-and areas. In the design of water supply systems must take into account the area and configuration of the area, population density, height of buildings, standards of water consumption and other parameters that influence the hydraulic calculation of water supply networks. The principle of energy equivalenting allows to unite a plurality of dead-and areas, designating them as a fictitious line subsystem, which greatly simplifies the calculation of the whole scheme of the full length of the hydraulic system.
RUDN Journal of Engineering Researches. 2016;(4):27-34
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EMERGING ARCHITECTURES FOR PROCESSOR-IN-MEMORY CHIPS: TAXONOMY AND IMPLEMENTATION
Valery A.L.
Abstract
The emergence of PIM (processing-in-memory) die and Date-Centric systems (DCS) and near- data processing approach (NDP) has given rise to the need of developing architectural taxonomy for multi-core PNM (processing near memory) hardware with multi-level memory structure. PIM die (in Russian technical literature usually used terms chips or crystals) considered as an effective alternative to conventional SRAM/DRAM/Flash-memory on Cache-CPU/Main Memory/Storage Class Memory and Storage levels. In the past decade, a few different methods to classify and to implement PIM die and DCS/NDP systems proposed. These approaches are either software interfacing with computing, hierarchical and massively parallel SIMD processing approaches etc. In this paper, presented summarized prolegomena for PIM die architecture and implementation. In particular, in form of basic PIM chips and nanostores.
RUDN Journal of Engineering Researches. 2016;(4):35-40
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THE COMBINED MODEL OF TRACE OF PRINTED-CIRCUIT BOARDS AND LARGE INTEGRATED SCHEMESWITH TWO-LAYER SWITCHING
Nazarov A.V.
Abstract
The combined model of synthesis of routes in which crossing of the conductors belonging to different chains is allowed is offered. For unambiguous stratification of resultant topology in work the unblocking mechanism which allows to increase sharply efficiency of distributing in comparison with classical wave algorithm is realized.
RUDN Journal of Engineering Researches. 2016;(4):41-47
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AUTOMATIC MODELING OF THE SURFACE OF THE SAME SLOPE IN THE ELLIPTICAL PLAN IN AUTOCAD THROUGH THE AUTOLISP LANGUAGE
Romanova V.A., Thoma A.
Abstract
Graphical computer modeling is a real possibility of solving problems for the education surfaces the kinematic method. It is due to the availability of computer-aided design, such as MathCad, Mathematika, AutoCad etc. The advantage of AutoCad is the availability of built-in AutoLisp language is functional. Having a wide set of mathematical functions and functions to draw graphical objects, language AutoLisp allows you to write a program to draw the shells of any complexity, in the particular case of shell the same slope in the elliptical plan, with subsequent transfer of results in the AutoCAD environment. The reproduction of objects in slow motion gives you the ability to create mini-movies about the formation of the surfaces. Image graphic creations in three-dimensional space, using the AutoCAD color palette enhances the expressiveness of the image surfaces and their elements.The aim of the study is the possibility of modeling the surface of the same slope in the elliptical plan, carried out by its gradual drawing in slow dynamically creating a mini-film, which allows to represent on the screen the process of formation of the surface.
RUDN Journal of Engineering Researches. 2016;(4):48-53
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THE USE OF THE BINDING PROPERTIES OF THE LIQUID TAILINGS AND ORES
Golik V.I., Komaschenko V.I., Razorenov Y.I.
Abstract
The relevance of reducing the cost of solid mixtures to fill technological voids in underground mining of ore deposits is due to the development of resource-saving and environmental trends in the mining industry.The aim of this work is to study the possibility of increasing the strength of the mixture by the use of liquid tailings multicomponent ores.In the course of laboratory and experimental - industrial experiment investigated the possibility of obtaining hardening stowing mixtures with the use of liquid tailings and ores.It is proved that the use of liquid waste processing processing significantly improves the strength and other technological properties of solid mixtures based on them is greater than the lower grade binder. Clarified the use of dam water as a sealer in the manufacture of solid mixtures for obtaining the same strength significantly reduces the consumption of cement, which is substantial economic effect. Dam water is used after the extraction of these metals, together with other associated commercial products reduces the cost of preparation of solid mixtures. Recommended method of extraction of the waste liquid metals under the influence of an electric field in diaphragm electrolyzers. It is shown that after extraction of the metals from pulpo-shaped waste, the latter represent a promising material for concrete production in the mining industry and construction industry.It is concluded that the use in the compositions of the solid mixtures, liquid waste hydrometallurgical processing significantly improves the strength and rheological properties of solid mixtures based on them due to salts of sodium sulfate, sodium chloride and surfactant water. Rational use of dam water increases the scope of progressive development systems with the bookmark hardening mixtures.
RUDN Journal of Engineering Researches. 2016;(4):54-62
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CLASSIFICATION OF METHODS FOR MANAGEMENTOF GEOMECHANICAL PROCESSES DURING THE DEVELOPMENT OF UNDERGROUND SPACE IN SYRIA IN THE CONDITIONSOF SWELLING SOIL-ROCK MASS
Khalil S.A.
Abstract
In the article defined the structure and classification of methods for management of geomechanical processes during the development of underground space in Syria in the conditions of swelling soil-rock mass. The different methods of protection of buildings and constructions which eliminate or reduce deformation of the bases of buildings and structures on swelling soil-rock masses.
RUDN Journal of Engineering Researches. 2016;(4):63-69
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FEATURES OF SAFE DEVELOPMENT ENSURE OF HAZARDOUS GAS-DYNAMIC PHENOMENA DEPOSITS
Esina E.N.
Abstract
Geomechanical methods to control the deposits of dangerous gases are developed. Conditions for the formation of through and closed local gaz channels are established. It allows choosing efficient positioning of degasification wells, to find and apply the optimal settings. A correlation between residual pressure of methane after degassing events and horizontal deformations of the dangerous layer is holding. Using the results of researches will allow to prevent accidents or to reduce their negative impacts and to increase the efficiency of methane utilization.
RUDN Journal of Engineering Researches. 2016;(4):70-74
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WATER TREATMENT FOR HOUSEHOLD PURPOSES FROM SURFACE WATER BODIES WITH LIMITED DEBIT
Govorova Z.M., Svintsov A.P., Kojen A.R.
Abstract
Water treatment for household purposes from surface water bodies with limited debit and that emerging under the influence of natural and anthropogenic factors of water quality is one of the priorities. Methods of pretreatment of water (the reagent-free removal of phytoplankton in the prefilter with floating charge and the combined effect of oxidants) and experimentally confirmed their role in improving the efficiency of water coagulation process are considered. Advanced water treatment technologies are considered, and the results of their industrial testing are given.
RUDN Journal of Engineering Researches. 2016;(4):75-83
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DEFORMATION MONITORING OF BUILDINGS SURVEYING METHODS AT RECONSTRUCTION OF ITS FOUNDATION
Tereshin A.A., Neguritsa D.L., Alekseev G.V.
Abstract
The article analyzes the results of geodetic monitoring of bearing structures of the building during the work on strengthening its foundations. The technique works reasonably required accuracy of geodetic measurements. As a result of geodetic monitoring established quantitative and qualitative characteristics of the strain of bearing structures of the building. It is shown that as a result of works to strengthen the soil deformation processes at the base of the foundations of the building were stabilized.
RUDN Journal of Engineering Researches. 2016;(4):84-90
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THE USE OF VISUALIZERS TRANSPORT NETWORKS DURING THE CONSTRUCTION OF ROADS IN THE CITY OF SAMARA
Filatova A.V., Dormidontova T.V., Samorukov S.S.
Abstract
The article discusses the use of Visualizers transport networks during the construction of roads in the city of Samara. Examples of various visualization techniques in the study of sections of roads in urban networks. As studies have shown, information on transport networks can be displayed in various ways. Developed and inter-connected, which are cartograms of enlarged flows of transport between districts.
RUDN Journal of Engineering Researches. 2016;(4):91-97
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ORGANIC ARCHITECTURE IN HARMONY WITH MAN AND NATURE
Shuvalov V.M., Komarova J.A., Golovataya O.V., Kenic O.
Abstract
This article is devoted to three components of the organic totality: human, architecture and environment. For many years people have evolved to the environment and were an integral part of it, dwelt in harmony and unity with nature, but due to the current established processes of urbanization there is a rupture of the connection between man and environment. For this reason, urban residents may feel uncomfortable in the urban space and try to move closer to human-nature environment. One of the main tasks of modern architecture is the revival and reunification of previously lost connection of the integral system “man-environment”. Since XIX-XX centuries the rethinking of the relationship between man and nature began and it gave a push to the latest ideas in the field of architecture. It led to the beginning of organic and harmonious fusion of man, architecture and nature. The goal of this article is to identify the fusion characteristics of architecture and landscape to prove necessity to arrange the person to environmental conditions as close as possible and, therefore, comfortable conditions to the natural environment. Analyzed the state of the metropolis’ architecture and the results of environmental impact on the human, there are factors that negatively affect to psychological and physical health in the urban environment. As well the urgency of individual housing is revealed. According to the principles of the organic approach solutions of architectural urban space changes are presented.
RUDN Journal of Engineering Researches. 2016;(4):98-104
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RATIONAL TYPES OF MULTIFUNCTIONAL RESIDENTIAL COMPLEXES (MFRC) FOR DIFFERENT LANDSCAPE AND CLIMATIC REGIONS IN UNITED ARAB EMIRATES (UAE)
Inshasi A.
Abstract
In article actual problems and tendencies of construction and architecture of residential complexes in the UAE are considered. The author observing an influence of major factors as landscape and climatic, demographic and economic factors as well as the religious characteristics and traditions to design of multifunctional residential complexes (MFRC). The most important in the opinion of the author techniques required to address the identified problems of designing of residential buildings are noted and the relevance of the application of the principle of multifunctionality in residential buildings of UAE are observed. The author offers rational types MFZHK for various landscape-climatic regions. Developed and described in detail the most rational types of apartments that best meet the needs of different groups of the population of the UAE in specific landscape and climate and economic conditions.
RUDN Journal of Engineering Researches. 2016;(4):105-114
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INFLUENCE OF SOCIAL AND ECONOMIC FACTORS TO DEVELOPMENT OF SPACE-PLANNING STRUCTURE OF THE LOW-RISE RESIDENTIAL BUILDINGS AND FACILITIES IN SYRIA
Khalil I.
Abstract
The article reviews influence of social and economic factors to development of space-planning structure of the low-rise residential buildings and facilities in Syria, including most recent military and political situation.
RUDN Journal of Engineering Researches. 2016;(4):115-120
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