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No 2 (2003)

REPORTS OF THE INTERNATIONAL SCIENTIFIC AND TECHNICAL CONFERENCE "SCIENCE-EDUCATION, PRODUCTION, ECONOMY"

3-7 1326
Abstract

The paper analyses the role of innovation activity in building up the economic potential of the Republic of Belarus and contribution of the Belarussian National Technical University to the solution of these problems by means of improvement of educational, scientific and industrial activity.

The paper reveals that the problem of educational quality is the most important one in the activity of the University. The paper determines directions of first-priority in the activity of the University. The implementation of these directions ensures the required level of specialist training.

8-12 329
Abstract

The paper considers the problems concerning higher quality of living standards of the population. The main objective of the presented conception is harmonious evolution of an individual, satisfaction of his material and spiritual needs. The strategy of sustainable development has been worked out and suggested for implementation in the Republic of Belarus. The paper gives analysis of forms and methods of innovation activity which is directed to efficient solution of the problems in the following chain: «scientific research-new technologies-organization of production - output of final products».

ARCHITECTURE AND CIVIL ENGINEERING

13-17 314
Abstract

The paper contains the theoretical substantiation of adhesive interaction of bituminous-polymeric binding agent with hard cement and concrete surface with the purpose to develop new and up-to-date waterproofing coatings. Experimental research work of adhesive interaction has shown that increase of polarity of filled and non-filled binding agents leads to increase of their adhesion to cement and concrete surface. At the same time there is optimum binding agent content in solvent when its adhesion to concrete surface is characterized by maximum value.

17-21 332
Abstract

Taking into account the approach which is given in the Belarussian Construction Norms adopted on 05.03.2001 the paper shows the main principles which are recommended for determination and assessment of the concrete strength in the case of fire. On the basis of investigations pertaining to the influence of various factors on the strength of C5/8 - C90/105 concrete in the case of short high-temperature heating a mathematical model has been proposed to determine coefficient of concrete behaviour in the case of fire.

22-24 268
Abstract

The paper gives the results of the investigations concerning seismic effect in the case of explosive collapse of large-size structures. Mathematical model of interaction of collapsed buildings and soil in the area of collision has been determined. Regular features of seismic effect caused by elastic collision of massive rigid body with the surface of weak-deformed media have been investigated. Method of determination of dangerous seismic distances in the case of explosive collapse of large-size structures of industrial buildings under constraint conditions of the construction has been developed.

METALLURGY. МЕТАL WORKING. MECHANICAL ENGINEERING

25-29 374
Abstract

The paper gives a variant of determination of economic efficiency while using new technique, technology and equipment under conditions of market economy. The calculation has been made for technological processes of machining steel, cast iron and aluminium alloy cases of automobile brake cylinders.

29-34 310
Abstract

The purpose of the present paper is to determine backlash value and influence of pin meshing compliance on the kineinatical precision of the cycloid speed reducer. The paper gives an algorithm of determination of the transmission backlash. The equation for analytical calculation of the algorithm has been derived. The C++ computer program for Windows with the purpose to realize the obtained algorithm has been developed. On the basis of the program the dependence of the normal original gap distribution in the pm gearing and dependence of backlash value on the eccentric rotation angle have been drawn. Methodology for determination of the influence of elastic backlash on the kinematical precision and experimental curve of the angle transference error of input and output shafts have been presented.

34-39 1612
Abstract

Movement of grinding bodies in a planetary mill with external rolling of drums has been analyzed. The critical speeds of rotation characterizing operational regimes of a mill have been determined. Influence of design characteristics on value of critical speeds has been analyzed.

39-41 459
Abstract

The problems concerning the improvement of machining accuracy and higher productivity while manufacturing cylinder mirrors of motorcycle engines have been investigated. The paper shows that while using diamond reaming accuracy, roughness and productivity of engine cylinder machining significantly exceed similar parameters of conventional methods.

INSTRUMENT ENGINEERING. INFORMATICS

42-47 293
Abstract

The paper describes mathematical equations which are used while developing computer systems of technological processes «ProLit», «ProTerm», «ProVent», «ProNRS». 3-d images of program fragments illustrating the possibilities of the products of the developed program are presented in the paper.

48-53 322
Abstract

The paper shows the results of experimental investigation of non-stable regimes of excitation of electrode system of conductivity measuring cell. The analysis of experimental data based on existing theory of electrode processes has been made. The interpretation of non-conventional results concerning the dependence of conductivity measuring cell current on voltage excitation has been given. It has been shown that with certain parameters of excitation potentiodynamic curves significantly differ for various types of solutions (in particular for acid and alkali media) that makes it possible to use the regime of analysis of these curves for determination of type and concentration of a solution. Operational diagram of the device using the detected effect is given in the paper.

POWER ENGINEERING

54-59 395
Abstract

The paper shows program complex that allows to solve problems of calculation of the electric power system regimes and their active power optimization taking into account new economic conditions that exist on the post-Soviet territory. The possibilities of modem computers have permitted to apply more advanced algorithms. The algorithm of regime calculations is based on the modified New- ton-Raphson method. The algorithm of optimization is based on the method of dynamic programming. While developing the complex up-to-date technologies of data storage and prpcessing have been utilized.

HUMANITIES AND SOCIO-ECONOMIC SCIENCES

60-66 264
Abstract

Tendencies in the development of engineering philosophy taking into account processes of coevolution, modernization and reforming of engineering education have been considered in the paper. Scientific and technological progress is treated in a wide range of humanitarian content.

66-70 271
Abstract

The paper gives methodology and methods of setting prices on tractors. The basic principle of the methods takes into account dependence of the most important design, operational and ergonomic factors on the market prices of local and foreign tractors. These methods may be applied to justify competitive prices on industrial production and products of other branches of the economy of the Republic of Belarus. The implementation of these methods will make it possible to increase price competitiveness of the target products.

70-75 320
Abstract

Theoretical, methodological and practical aspects of formation and regulation of labour market of specialists in Belarus have been considered in the paper. The paper has shown specific features of this segment of labour market, problems and shortcomings in employment of specialists. The paper contains practical recommendations on the optimization of labour market of specialists. The ideas and conclusions of the paper may be used while teaching social, economic and management subjects, conducting research works in respect of problems concerning social and labour relations and professional education in the Republic of Belarus.

75-78 436
Abstract

The paper reveals significance and necessity to analyze intraeconomic relations in order to estimate individual managing units of the subject of economic relations with the purpose to control and reduce costs that is especially important in the case of managing total financial position of an enterprise. The paper contains a model of economic management of the activity of structural units on the basis of profit, cost; an administrative model with elements of economic management on the basis of financial results with transfer price formation. Methodical recommendations for selection and application of this or that model have been given in the paper.

79-84 1436
Abstract

The paper considers the problems of reimbursement for damage caused by internationally wrongful act. Every stage directed on liquidation of the consequences of the wrongful act serves for realization of the principle of full reimbursement for the damage. It means that the reimbursement should be equal to the caused damage. In this case interests of international community have become more important factor which determines the character and types of the reimbursement.



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ISSN 2227-1031 (Print)
ISSN 2414-0392 (Online)