No 2 (2012)
- Year: 2012
- Articles: 18
- URL: https://journals.rudn.ru/engineering-researches/issue/view/320
Articles
Calibration of stress meter
Abstract
The purpose of calibration stress meter is to determine what strain σ or elongation of the scale corresponds to one unit. It is more convenient to express the division value of the strain. The paper proposes to determine the actual price of the scale division of Automatic Meter strain (AID-4) in conjunction with a specific type of strain gage load cell calibration on the beam, and is an order of calculating the average price of a division on stresses σ and the relative deformation ε.
Instead of two resistance boxes and metrological service proposed, developed and used in the process control device efficiency (balancing and calibration).
RUDN Journal of Engineering Research. 2012;(2):5-15
5-15
16-22
egarding the calculation of the minimum friction stress in combined sewer pips
Abstract
Based on the M.I. Aleksejev's conclusions about the influence of the friction losses coefficient on the longitudinal and cross pulsations momentary rate in the fluid, was derived a formula for minimum friction stress definition on the walls of the combined sewer and drainage pips. The analysis of sediment grain-size composition of pollutants in combined sewer systems of European cities is given. Performed an analysis of correspondence between calculated friction stress values and friction losses coefficient values, that were obtained from measurements in combined sewer systems of Paris and Nantes. Maximum diameters of the particles of pollution which will be weighed by runoffs in compliance with the rules accepted for disposal networks in Europe and the U.S are determined.
RUDN Journal of Engineering Research. 2012;(2):23-30
23-30
31-36
Substantiation of diagnostic parameter estimates for motorvehicles imbalance
Abstract
The dependence between intracyclic rotary acceleration of crankshaft and engine's disbalance quantity was revealed on the steady-state regime. On basis of this dependence, method of nonseparable appraisal engine's imbalance had been developed.
RUDN Journal of Engineering Research. 2012;(2):37-40
37-40
41-49
50-56
57-67
Information security with message authentication code
Abstract
This article describes three Message authentication code algorithms. These algorithms ensure the authenticity of the message between two or more parties to the transaction and can be applied in such information bank systems as CFT and so on. Also the results of testing the software implementation of these algorithms are described here.
RUDN Journal of Engineering Research. 2012;(2):68-77
68-77
78-84
Experimental study of formation of gas hydrates
Abstract
Considered experimental study of formation of gas hydrates of the gas mixture in the thermodynamic conditions specific to the bottom of the conditions of lake Baikal. The comparison of the processes of hydrate formation in the laboratory and in the natural conditions of lake Baikal.
RUDN Journal of Engineering Research. 2012;(2):85-93
85-93
Prognostic resources of mineral deposits by geophysical methods
Abstract
In the framework of non-equilibrium statistical thermodynamics a relation between the concentration of component of the ore to its physical properties.On the basis of this communication formulas for calculation of the differentiated and predicted stocks of deposits of minerals are received on the basis of the geophysical data. Methods of magnetic investigation, electric investigation, gravitational investigation and seismic prospecting, and also nuclear physical methods are considered. A comparison of the calculated expected resources with proven for a number of fields in Kazakhstan.
The proposed method allows to perform predictive assessment of stocks of deposits in the early stages of prospects with using the results of geophysical methods, while it has a rapidity and to be sufficiently accurate.
Non-equilibrium thermodynamics, geophysical methods, and estimated resources, deposits of minerals.
RUDN Journal of Engineering Research. 2012;(2):94-101
94-101
Allocation and estimation of prospective areas basing on unique set of methods
Abstract
In today's world the search for gold deposits are very relevant. The article shows a unique method of allocation prospective gold mineralization areas, basing on paleovolcanic reconstructions, and its estimation by iodometric and lithogeochemical studies.
RUDN Journal of Engineering Research. 2012;(2):102-106
102-106
Calculation of primary reserves by method of reserve express-estimation (on the example of major oil and gas deposit in Yamalo-Nenets autonomous okrug)
Abstract
The method of reserve express-estimation is a simple and enough accurate for rapid assessment of reserves within the bushes, blocks, sections cut, etc. The article shows the results of our studies, performed by this method, at one of deposits located in Pur fields in Western Siberia.
RUDN Journal of Engineering Research. 2012;(2):107-111
107-111
The main aspects of management of social hotels in the hotel business
Abstract
Many experts in the sphere of management of the hotel business say the common point of view on the problems which keep back the development of the hotel industry as a whole and its separate sectors in particular. Many of them, such as unregulation of operations with land, high cost of property, administrative barriers keep back the formation of the social hotels. At the same time, specificity of activity of a social hotel, from the authors point of view, stimulates to consider social hotels as an object of the state management.
RUDN Journal of Engineering Research. 2012;(2):112-121
112-121
Aspects of capital budgeting decision-making process of emerging markets transnational corporations
Abstract
Considers present-day aspects of capital budgeting decision-making in investment projects by transnational corporations (TNCs) in emerging markets. Discusses peculiarities of cash flows of TNC mother and project companies which influence the decision-making in project investment. A number of effective valuation techniques for multicurrency projects has been proposed, taking into account adjustments for various factors.
RUDN Journal of Engineering Research. 2012;(2):122-126
122-126
Waste treatment in metropolis - economic-ecological world experience
Abstract
The article is devoted to the world problems of environmental pollution (municipal wastes). The authors analyze the ways of their management in various countries, compare the methods of their recycling and describe ecological-economic approach to this problem. The authors found out factors providing advanced recycling technologies development and minimizing environmental pollution.
RUDN Journal of Engineering Research. 2012;(2):127-135
127-135
Our autHors
RUDN Journal of Engineering Research. 2012;(2):136-140
136-140