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2017

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217

INDIVIDUALIZATION OF MOTIVATION OF EMPLOYEES AS FACTOR INCREASING ORGANIZATIONAL PERFORMANCE

Posted in 2017, ECONOMICS, Issue №11(65) November 2017 | 0 comments

The levels of performance in the organization are considered in the paper. The problem of increasing the individual performance of staff as a basis for organizational effectiveness is updated. Directions of individualization of staff motivation in the context of organizational effectiveness are given, such as the system of key performance indicators (KPI), and grading system. The advantages of using the KPI system and grading in modern organizations are indicated. The use of grading for determining the basic part of wages and the KPI system for a variable is justified.

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PSEUDO β-TITANIUM ALLOY FOR HIGH-LOADED PARTS OF AERONAUTICAL ENGINEERING

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

Based on the generalization of data, presented in other works, the statistical research of the temperature of polymorphic transformation, phase composition, and mechanical properties of deformed semi-finished products from Ti-10V-2Fe-3Al titanium alloy are carried out. The regression analysis is used to obtain equations for calculating the temperature of the polymorphic transformation and the amount of the primary α-phase after quenching. The statistical interrelations of mechanical properties have been established, they make it possible to evaluate possible combinations of crack resistance, strength and plastic characteristics.

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LEVEL OF RELIABILITY INDICATORS OF ELEMENTS OF DISTRIBUTION NETWORK IN DUSHANBE

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

To assess the state of the elements of 6-10 kV city distribution networks, it is necessary to calculate the reliability indicators of the elements of power supply schemes, which enables the determination of the degree of reliability of the elements in question.The article deals with the levels of indicators of reliability of elements of city distribution networks with voltage of 6-10 kV in Dushanbe expressed in a quantitative form and are obtained from annual reports for the periods of 2012-2016. The data on the lengths of air, cable power lines and the number of urban power transformers of 6-10/0.4 kV voltage are given. The following reliability indicators are calculated: Intensity and frequency of failures, average recovery time, as well as the under-supply of electricity due to an interruption in power supply associated with failures of the elements.The results obtained are compared with published sources for quantitative evaluation.

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ON SOME ISSUES OF INTEGRATION IN MULTIDIMENSIONAL SPACES

Posted in 2017, Issue №12(66) December 2017, PHYSICS AND MATHEMATICS | 0 comments

The paper is devoted to founding of various nontrivial estimates of the concentration function. The interest in this function is due to the fact that it is the most important tool for studying the properties of the convolutions of various probability distributions that appear in numerous applications. Some results obtained for this function in the one-dimensional case are generalized to multidimensional spaces in the presented paper. Thus, the well-known result of Enger from [1] is strengthened (see Theorem 2). In addition, it is shown that the estimate in Theorem 2 is unimprovable in the dimension of the space. The proofs of the main results are based on the use of the method of characteristic functions. The main difficulty is connected with the estimates of complex multidimensional integrals.

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DESIGN MODEL OF POTENTIAL DESTRUCTION ZONES OF METALLURGICAL CRANES BEARING STRUCTURES

Posted in 2017, Issue №12(66) December 2017 | 0 comments

Development and creation of individual models of structural risk agreed by the purposes and tasks are topical. The structure of such models implies the decomposition of R-characteristics. The conceptual design model of potential destruction zones of metal bridge cranes bearing structures is described. The problems for the correct description of such a model are determined. The proposed theoretical models can be used in solving practical problems of structural risk analysis of such a group of objects as special heavy metallurgical bridge cranes.

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FORMAL DESCRIPTION OF INFORMATIONAL SYSTEM FOR ENSURING MULTILOOP ENTERPRISE MANAGEMENT

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The productional and informational system model is considered, it is aimed at the achievement of a control decision. The peculiarity of the informational system lies in the fact that it has the property of behavior, i.e. allows to recognize a problem situation, to determine the most appropriate one from the behavior models and to activate the implementation of control decisions on the relevant contours of the production system. The algebraic system, allowing to determine the type of problem situation, the behavior model, the business process and the control object are presented. Based on the proposed model, a software has been developed automatically determining the control loop that should solve the problem situation, as well as define the centers of responsibility for which signals are sent for automatic or automated execution of the management decision.

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MACHINE LEARNING IN DEVELOPMENT OF VIDEO GAMES FOR LANGUAGE LEARNING

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

This article presents the use of machine learning and data analysis techniques in development of adaptive level selection schemes for video games for language learning. The prerequisites for the development of such a system are described in the paper, as well as a statistical analysis of the effectiveness of the constructed scheme based on data collected from a sample of students of the Astrakhan State University. The comparison is made with the simpler schemes used earlier in the development process, using both classical frequency methods (Pearson consensus test) and Bayesian methods.

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SPECIAL POINTS IN PROJECTIONS ON THE PLANE OF THE COORDINATE OF THE NORTHERN POLE OF THE EARTH

Posted in 2017, Issue №12(66) December 2017, PHYSICS AND MATHEMATICS | 0 comments

In this paper, we discuss the possibility and conditions for the emergence of singularities in projections onto the plane of the daily coordinates of the Earth’s North Pole. Singular points on the graphs of the positions of the instantaneous pole of the Earth are considered as geometric shapes of projection on the plane of the smooth (quasiperiodic) process of motion of the instantaneous pole on the Earth’s surface with a certain ratio between the values of the external control parameters and the internal ones that determine the rotation of the Earth around its axis. The emergence of singular points is the result of a certain physical rearrangement in the oscillating system of the Earth and the geomagnetic field and atmosphere associated with it by the energy exchange processes.

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SIMULATION MODELING FOR EVALUATION OF INFLUENCE OF FACTORS ON DURATION OF CARGO DOWNTIME IN TRANSPORT HUB

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

Cargo transportation is a large complex system of participants of the transportation process interaction. Sufficient throughput and processing capacity of transport hubs is the one of the main provisions for transportation. The paper is aimed at assessing the influence of various factors on the processing capacity of transport hubs. The leading approach to the study of this problem is to create the simulation model for the software to assess the impact of infrastructure parameters changes without constructing visual contact schedules of the transport hub. The article materials can be useful for all participants in the transportation process of any type of transport.

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TO THE QUESTION OF INCREASE OF QUALITY OF FARM ROADS

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The article deals with the quality control of construction and operation of farm roads. The main reasons for quality control of works are singled out. All stages of quality control of pavement made of stone materials are consistently analyzed. Relevant consequences of the violation of the quality of construction and installation works and methods for eliminating defects are given. Recommendations on increasing the longevity of agricultural roads with the use of new building materials are presented and justified.

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PROBLEM OF THIN LIQUID LAYER DISTRIBUTION ON ANGLED SURFACE

Posted in 2017, Issue №12(66) December 2017, PHYSICS AND MATHEMATICS | 0 comments

The article analyzes some features of the thin layer motion of inviscid incompressible fluid flowing along an inclined surface in the approximation of the theory of “shallow water.” Based on the proposed approach, we studied the influence of the surface inclination angle on fluid dynamics. To simplify the process of obtaining solutions, a generalized self-similar scheme is introduced, when the form of the time component is adopted without specification. Proposed substitution allows us to obtain analytical solutions in a number of special cases. The choice of the terms of the equation for the transformation enables obtaining a sufficiently large number of different solutions depending on the number of terms in the equation. Comparison with approximate solutions can be used to determine the range of variation of the special parameters obtained by using the method. The results obtained may be of interest, for example, in selecting the angle of inclination of the walls of the ditch, intercepting rainwater flowing from the hill to the road or from the roadway to the ditch.

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CALCULATION OF CARRYING CAPACITY OF UNIVERSAL RIBLESS GRANARY OF ZEMAN TECHNOLOGY, AUSTRIA

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The article presents the results of automated calculation of cylindrical frameless covering the storage facilities of grain crops by a span of 18 m with an arrow of 6 m on the basis of thin-walled arched rolled trapezoidal cross-section by the technology of the group of Zeman companies (Austria) in the author’s software package “ARKA”, implemented in the public MS Excel spreadsheet. The calculation was carried out for the III snow climatic region, II wind climatic region (Omsk). Two options for the action of snow load are considered in accordance with SP 20.13330.16. As a result of calculation, the coefficient of using the bearing capacity for the first group of limit states was obtained. PC “ARKA” allows to perform optional calculations of load-bearing capacity of cylindrical frameless coatings of granaries based on the thin-walled arch trapezoidal cross-section technology of the Zeman group of companies (Austria) in any area of construction in on-line mode.

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REQUIREMENTS TO THE MODERN DRIVER OF POWER SWITCHES

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

We conducted a review of the state of power conversion devices development. The reasons for the necessity to create domestic power switch drivers are justified. The main ways of solving this problem are outlined. Basic requirements to the set of functions that a modern driver of the power switch should support are formulated. Examples of the shortcomings of the drivers of the CT Concept Company revealed during their operation are given; the ways of their elimination are suggested. A new topology of the output stage of the driver is proposed. It provides control of the impedance of the recharge circuit of the input switch capacity at different stages of the charge-discharge processes. The advantages of this topology are shown when using the active clipping mode for inductive voltage ejections on a switch during its shutdown (Active Clamp).

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REDUCTION OF PEAK-FACTOR OF OFDM SIGNAL BY METHODS BASED ON SIGNAL LIMITATION

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The problem of reduction of the peak-factor of OFDM signal with the use of methods based on signal constriction is considered in the paper. The appliation for simulating the transmission of OFDM signal via the channel with additive white Gaussian noise is developed in MatLab environment. When the signal is received, its parameters are calculated, and the spectrum is constructed. Soft constriction algorithms are developed for the received signal, which use the weight functions and strict constraints. Simulation modeling is performed for 12 window functions. The value of the energy gain is calculated.

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INCREASE OF ENERGY EFFICIENCY OF ELECTROTECHNICAL COMPLEXES OF COGENERATION PLANTS FOR POWER SUPPLY OF OBJECTS OF OIL AND GAS ENTERPRISES

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The article considers the issues of increasing the energy efficiency of power generation complexes for power supply to enterprises of the mineral and raw materials complex. The structure of the cogeneration unit is proposed with synchronization of the parameters of generated electrical energy in parallel operating electric generating units for the implementation of efficient power supply. The application of the proposed complex allows the most efficient use of the potential of the primary energy carrier, reducing the cost of electrical and thermal energy.

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MATHEMATICAL MODEL OF LEUKEMIA

Posted in 2017, Issue №12(66) December 2017, PHYSICS AND MATHEMATICS | 0 comments

We developed a mathematical model of leukemia on the basis of modern data on hematopoiesis in mammals. Three types of cells are considered in the model, one of which is leukemia. Interaction of cells is studied as a competition for the functional space of dividing cells. Leukemia cells are cells dividing at a higher rate than all the others. The model of replacement of leukemic cells with donor cells is considered as the introduction of more active cells than leukemia ones. The model is represented by the Cauchy problem for a system of ordinary differential equations. Violation of hematopoiesis functions is correlated with a change in the leading parameter, which transfers the system from a stable steady state to an unstable one.

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LAMINARIA AS IODINE-CONTAINING COMPONENT IN FUNCTIONAL PRODUCT PRODUCTION

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The paper presents the comparative analysis of the chemical and mineral compositions, safety parameters of Japanese laminaria and laminaria’s thallus to study the possibility of their usage in a meat products technology. Their functional and technological properties are studied as well. The norms for the introduction of laminaria have been determined and the recipes for a new type of meat semi-finished products have been developed. The studies were carried out on finished products and showed that the consumption of 200 g of the developed new type of chopped semi-finished products of pleskavicas “Sea” and “Sea original” will compensate for the daily amount of iodine intake at sufficiently high food indices.

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ARCHITECTURE OF INTELLECTUAL IMITATION SOFTWARE FOR MODELING COMPLEX ORGANIZATIONAL-TECHNICAL SYSTEMS

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The paper proposes the architecture of intellectual simulation software for modeling complex organizational and technical systems, considers the functions of individual elements of such system, as well as the process of its functioning. The software tools constructed in this way can be used both independently for modeling complex organizational and technical systems, and as part of software complexes in the conditions of automatic interaction of different models.

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NATURAL RADIOACTIVITY OF CLAY ROCKS USED FOR MANUFACTURE OF CONSTRUCTION MATERIALS

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The results of study in specific activity and effective specific activity of natural radionuclides in clay rocks are presented. They are used for the production of various ceramic building materials. The processing of the obtained results made it possible to obtain the basic statistical characteristics of the investigated rocks. The analysis of statistical characteristics allowed to provide recommendations aimed at reducing the level of exposure of the population from construction materials to raw materials for which the investigated clay rocks are used.

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DETERMINATION OF OPTIMUM VECTOR OF CONTROL ACTION IN PROBLEM OF ELECTRICITY LOSS REDUCTION

Posted in 2017, ENGINEERING, Issue №12(66) December 2017 | 0 comments

The calculation of technical measures for reduction of electric power losses on the example of a simple unbranched network is carried out in the article. The optimal measure to reduce energy losses is determined. When calculating electricity losses by 10 kV, the schedule of electrical loads is taken into account. Comparison of the results obtained in this article with the available results shows that the choice of measures should be carried out according to special technical calculations that consider the mutual influence of the activities rendered on electric power losses in power transmission lines and transformers.

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