For the economic analysis of railway enterprises assessment the special form has been worked out. The results of the economic estimation allow the economic subject supervisor to obtain analytical material for the managing decision making. One of the main trends of economic subject activity is economic state assessment on the basis of analysis with up-to-date management theory based on economic information technologies that allows to compare production transformation results on the temporal periods and related economic subjects. The peculiarity of this economic assessment method is that all indexes used in the analysis have the same direction vector, i. d. the higher index, the more favorable economic state of analysed economic subject.
Keywords: railway transport enterprises, economic subject, decision making, assessment results, estimation, data processing, multidimensional approach.
The development of the approach to multi-criteria robust optimization is presented in article by developing of a technological machines robust optimization method in a joint synthesis of a parameters and tolerances on them. The ability to search for optimal solutions is the advantage of the proposed method in the absence of functional dependencies for single quality parameters from the input parameters that have extreme character and in terms of the existence of intuitive perception about their best averages. A structural (functional) synthesis, a parametric synthesis and a synthesis of tolerances theories were used to develop a method. This article may be useful for researchers studying the problems of finding optimal solutions during the implementation stages of creating and implementing life cycle of technological machines and for researchers studying the problems of improving the quality and competitiveness of technological equipment in domestic enterprises.
Keywords: tolerance; parameter; synthesis; robust optimization; processing machine; area of optimum values
Results evolutionarily – functional approach to the analysis and classification of the existing software by processing of spatial data for support of decision-making at the regional level are provided in operation. The analysis of existing software on processing of spatial data for support of decision-making at the regional level, in which the main objectives and functions, creation time, and also the used types of spatial data were shown, is carried out. The four-stage model of classification of the software which distinctive feature is synthesis of cluster and synergy approaches is developed.
Keywords: evolutionarily – functional approach, spatial data, cluster approach, synergy approach, software
The article introduces the concept deployer of high speed analog-to-digital conversion to reduce the dynamic error of the 2nd kind. It is shown that the use of high-speed deployer conversion leads to unequal capture samples of the signal. Considered the ratio of the period of the capture signal samples at a uniform sampling rate and sampling using high-speed deployer conversion, for a given interpolation error. The estimated coefficient linking the period of the uniform sampling and the period razvarivaya functions. It is shown that the recovery of signals by the Lagrange polynomial of the first degree and the use of high-speed deployer conversion, the scan period must be two times less than the period of the capture signal samples at a uniform sampling.
Keywords: the dynamic error of the 2nd kind, the discretization of signals in time, razvenchivayuschie analog-to-digital conversion, the period razvarivaya functions
Issues involving the analysis and assessment of the efficiency of socio-economic systems are becoming increasingly important and urgent in the modern state structure. An objective assessment of the managerial actions of federal and regional authorities is essential to the reliable functioning of systems of various levels and areas of human operation. The article presents an overview of the main methodological approaches to the study of socio-economic systems. The general theoretical principles of analysis are listed, as well as a brief description of the methods determining their features, direction and applied significance in modern research practices. A great many of the techniques used originate from various scientific fields, and have a reasoned basis and an extensive history of practical application. The approaches and instruments are combined and synthesized, creating a synergistic effect and widening the field for practical research activities in all spheres. The diagram shows a certain general classification of methods by their typical appurtenance, position and mutual influence. Statistical methods that have an extensive history of application in various scientific fields are brought together and compose the basis of research. Expert methods may represent a quite independent research unit, but they could not account for the entire range of problems arising in the study of socio-economic systems. Based largely on the results of examinations and significantly expanding and supplementing them, the various methods of intelligent data processing often function interdisciplinarily, and as a rule, are computerized.
Keywords: socio-economic system, management, assessment of efficiency, analysis methodology, integral index, examination, intelligent data processing
In modern conditions developed and used hydraulic calculation of gas networks program. With them, you can get the pressure value at the nodes of the distribution system of gas supply, costs, and gas velocity in the settlement areas. But do not count in these economic aspects, ie, It is not determined the most economical option, which can be obtained by optimizing the individual characteristics of the gas network. These characteristics in the development of the concept of gas supply is a rational distribution points gas reduction and determination of optimal kolichestva.Priveden calculation of the optimal number of the PWG and the optimal diameter of individual sections of the network of medium pressure gas pipelines to ensure the best economic performance timing system. Defined pressure regulator bandwidth capacity for its stable operation. To determine the effect an increase in the inlet pressure on the diameter of the pipeline.
Keywords: optimum range, the optimum load, optimization of pressure, the diameter of the gas-supply circuit, the hydraulic calculation capacity pressure regulator.
"Effective and affordable sorbents produced from natural organic raw materials and waste products of agricultural and livestock origin, because these sorbents are part of existing ecosystems and, therefore, best meet environmental requirements, in order to ensure the rational nature management and preservation of consumer properties of water resources. For the solution of actual problems, such as the removal of oil and oil products from water surface, as sorbents was investigated by the waste processing of leather and agricultural industries: wool (sheep and goat) and feather (chicken and waterfowl). It is established that application of organic and mineral acids at certain concentrations , for treatment of wastes from the processing of wool allows to obtain sorbents directional spectrum for removal of oil products (such as diesel gas oil and engine oil) and oil from water. The modifiers of wool and feathers obtained after the chemical treatment, was used to study the sorption of oil and oil products from water surface. It was determined by sorption characteristics of the modified sorbents, such as oil capacity and moisture absorption. The kinetics of sorption–desorption of oil, which showed that the greatest degree of absorption is observed for the first 10-15 minutes. It is found that wastes from goat and sheep wool have a 90% holding capacity that persists in time. It was revealed the effect of temperature on oil absorption capacity of the sorbent and the calculation of heat of adsorption. The temperature increase leads to a reduction of the capacity of emulsified oil, reducing the degree of purification by 15-30%."
Keywords: sorbent of oil, wool, feathers, oil, oil products, chemical modification of the sorbent, oil capacity, moisture absorption, heat of adsorption
The article shows research on the wireless technologies, their evolution, the development in Russia and the world. We reviewed the standards and requirements for networks. The reasons for the development, and the fast distribution of network-generation technologies. we have said about the wireless transmission of high-speed networks, a new generation of data. It was found that the evolution of wireless technologies significantly affects not only the development of related technologies of today's networks, but also contributes as the impetus for the fast genesis in the integration with them the latest information and communication technologies and networks, as well as modern mobile equipment and othersand development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.
Keywords: Wireless network generation wireless networks, wireless access points, network technologies, mobile equipment, networking standards, Wi-Fi, WLAN, GPRS, EDGE, LTE
The latest requirements for specialist training in the system of higher education in the Russian Federation call for enhancement of foreign language learningand improving foreign language teaching. The aspect of interdisciplinary link between foreign language learning and cross-cultural communication is emphasized in the article. We suggest that in order to overcome cultural and language barriers we need to actively engage experts in cross-cultural communication in foreign language teaching, particularly, for science students.
Keywords: system analysis, motivation, methods of education, identity, military-patriotic education, patriotism and the needcross-cultural communication, professional and cultural competence, foreign language teaching, cultural and language barriers, cultures with
The paper presents a technical-economic analysis of the perspective of development of domestic forestry machine-building in the conditions of import substitution. The authors substantiate and prove the prospects of using domestically produced harvesting machines in logging works, particularly the machines based on caterpillar tractors OTZ-300 and OTZ-400, fitted with modern foreign (in prospect - domestic) technological equipment. Using logging machines made by “Amkodor” company during cutting operations is also economically justifiable. In particular, in difficult natural-manufacturing conditions (the third category of soil) vehicle operating costs on a work cycle of machine complexes by the company “Ponsse” make 1081,7 rouble/m³, of machines by the company “Amkodor” – 848,4 rouble/m³, and of machines based on caterpillar tractors by LLC “OTZ” the costs make 407,7 rouble/m³ on the average. Specific capital costs are 2862, 1215,2 and 560,5 rouble/m³, respectively. Hence, we can draw a conclusion that machines and machine complexes based on caterpillar tractors of cross-country capacity provide stable productive work with high technical-and-economic indexes in difficult natural conditions.
Keywords: import substitution, logging machines, technical-economic analysis, perspectives
The efficiency of a timber harvesting company depends primarily on the proper selection of technologies and systems of machines that would satisfy as much as possible the natural - production requirements and the conditions in which the company operates. In the timber harvesting regions of Russia operating machinery conditions are quite different from each other. They differ in taxation indices of wood, soil, rainfall, terrain, temperature regimes. In this research the article classifies machine systems and processes to identify similar groups, which allow providing advice on their use in the various natural - production conditions, both individually and in various combinations. Machines are classified by the condition of their use depending on the terrain, soil conditions, the average volume of tree-length material and its maximum diameter. Technology processes are classified by types of finished products (wood, tree-length, assortment, chips, etc.), by place of processing of the object of labor, etc. Classification allows you to specify a limited number of the most appropriate to the specific natural - production conditions of technologies and machine systems.
Keywords: timber harvesting work, the classification of technological process, timber harvesting technologies, the formation of machine system, natural - production factors, logging waste, processing of brush wood
The article discusses the problems associated with the development of institutions that support technological development. Necessity of formation of a productive institutional environment, appropriate technology type of economic growth based on knowledge economy. The structure of the institutional environment of the knowledge economy, including functionally interdependent institutions: development institutions of knowledge and technologies (production, exploration, development and protection of knowledge) and their associated organizational forms.
Keywords: technological development, institutions, institutional environment, knowledge economy, economic development, innovation
Every year the number of users of the global network Internet. Due to the rapid pace of development of portable technology is the most relevant method of Internet connection is a wireless connection. In a Wi-Fi network provides for the use of the access method to a common transmission medium CSMA/CA. The method is probabilistic in nature, which ing does not guarantee a successful message transmission in the case of high inten-zivnosti network traffic. For this reason, networks that use this access method, are ill-suited to address control tasks in real time. Some modification of the access algorithm CSMA/CA eliminate such disadvantages of Wi-Fi networks, such as: - inability to use such networks for solving control tasks in real time; -.the inability of priority service subscribers. In the article the results of researches of possibility of correction of the access method CSMA/CA by applying an intermediate driver in the stack of network drivers.
Keywords: intermediate driver, access method, wireless network, collision, medium
Reflects the results of work aimed at finding new Technical solutions to reduce power consumption in crushing lumpy rocks in the jaw crusher. Main technical solutions for advancement the jaw crushers are presented in the form of Intellectual matrix of evelopment. The ways of improvement construction jaw crushers in order to increase process efficiency crushing
Keywords: rock, crushing, matrix of development, patent, jaw crusher
The article presents an approach of calculation of evaluation of manufacturer risk to take the wrong decision, based on the results of criticality assessment, received by expert methods of analysis of system reliability in its design stage. The problem of realization of the risk-oriented thought (one of the most important ISO category) is considered. The analytical dependences for calculating risk amount are developed. The dependences take into consideration various probability distributions and cases where the probability distribution is unknown. Using of proposed method allows increase the efficiency of actions aimed at improving of products quality.
Keywords: criticality assessment, reliability engineering, manufacturer risk, wrong decision,expert method
The article describes one of the methods of machining deep grooves in the turbine rotor disk mill, analyzed the parameters of the shear layer, defined modes of processing and the main process time.
Keywords: milling techniques, the parameters of the shear layer, the maximum thickness of the cut, the cutting conditions, the cutting force, the main production processing time
This article provides an overview of the technical solutions of equipment to deal with trees and shrubs, conclusions are drawn on the basis of the review and the direction of further improvement of the equipment and technologies to deal with trees and shrubs.
Keywords: trees and shrubs, mulcher, reliability, stump grinder, rotary actuator, reforestation
The article considers the questions of formation of system of social protection of the population in the local area. Analyzed the components of the modern problems in the sphere of life of the population. On the example of municipality of the city of Taganrog, Rostov region presents an assessment of problems in the sphere of social protection of persons with disabilities. Presents an analysis of the developed project to create a gym for this category of the population.
Keywords: the system of social protection of the population, problems of social protection of disabled persons, forms of social support, municipality, municipal program of social protection of the population
The article describes the role of reduced order models (ROM) in MEMS design & testing, reflects their advantages in comparison with the finite element method (FEM) full models for real-time behavioral modeling of MEMS dynamic characteristics and versatile research of the objects' properties. The mathematical interpretation of the procedure for reducing the system dynamics equations order by switching from the full model presented in the form of state variables equations to the ROM state variables equations is given, the four existing scientific methods for reducing the FEM model order are presented in generalized form. The particularities of embedded ANSYS software capabilities application to automatically generate the ROM from the original full FEM model with lower computer power requirements and the preservation of the original model accuracy in the presence of only the structural mechanics are set out in details. Two equal algorithms for further work with the ROM in MatLab software in order to simulate the MEMS dynamics and study time and frequency properties of the model are presented: by designing the scheme consisting of prearranged Simulink function blocks and by writing an M-file program listing using the special MatLab programming language. Scientific novelty of the results is the combination of the methods for MEMS design (system of partial differential equations, ANSYS program) and behavioral modeling (system of ordinary differential equations, MatLab program) that can significantly reduce the complexity of the FEM model adaptation to the real-time modeling and eliminate computation errors.
Keywords: micro-electro-mechanical system, finite element method, behavioral modeling, reduced order model, ANSYS, MatLab
The efficiency of algorithms for adaptive time sampling (ATS) compared to the uniform time sampling (UTS) is defined in this property the analog signal as its compressibility. In order theoretical estimates of the compressibility of the measuring signals discusses the dependence of the current beat of the measure under ideal in terms of quality playback ATS from the dynamic properties of the signal. Signal recovery after ATS is made by extrapolation by a polynomial of n-th degree. The quality of approximation is determined according to the criterion of uniform approximation. For the extended area of the margin of error of reproduction is proposed as the dynamic properties of the signal to use its structural properties. In the case of a polynomial of the 0-th degree obtained functional dependence of the current measure measurement of the structural properties of the signal, allowing it to determine the average quantum duration of the measurement for ATS.
Keywords: Analog-to-digital conversion, adaptive time sampling, cycle measurement, coefficient of reducing the number of samples, the structural properties of the signal
This work is devoted to the modeling of the fuzzy assessment of the impact of human factors in emergency situations in industrial activity. Relevance of the research lies in the uncertainty, heterogeneity and uncertainties of the input data, on the basis of which it is necessary to assess the impact of human factors in emergency situations. The article describes the main stages of the fuzzy modeling: fuzzification of input data, the construction of inference rules and defuzzification of the output variable. The proposed base of fuzzy inference rules include input linguistic variables, fuzzy rule-production and output linguistic variable. The constructed model allows us to estimate the degree of influence of the human factor in the conditions of uncertainty and subjectivity.
Keywords: linguistic variable, fuzzy modeling, human factors, fuzzy rule-production
Content Based Image Retrieval is a one of the most popular search methods used in large-scale databases. Comparison the query image with each image of large scale database leads to lowering the systems performance. In this article are considered different clustering algorithms. They may be used for optimizing image searching access period.
Keywords: CBIR, clustering, K-means, fuzzy C-means (FCM), Possibilistic C-means (PCM), bio inspired algorithm
In modern conditions the problem of assessment and privatization of municipal property is quite relevant in connection with the transition to market relations, and the development of the institution of property. In this article we try to consider the basic aspects of valuation and privatization of property for municipal needs.
Keywords: privatization, real estate valuation, auction, municipal programs
The purpose of the presented work is carrying out the system analysis of statistical data on results of application of the modified binary algorithm of bats at the solution of dynamic problems of discrete optimization for detection of features of its application and specification of rules of control. In article justification of broad application of algorithms of agent-based metaheuristics in the solution of optimizing tasks is executed. At the level of mathematical statement one of actual tasks which decision is demanded currently is shown. The shown task is interpreted on a concrete example in terms of graph theory. For its decision the binary algorithm of bats which allowed to solve successfully specified problem is reasonably chosen and modified. The last is confirmed by the presented results of three series of experiments. Authors made the detailed analysis of the specified results which materials is the main part of work. In the conclusion of article the list of concrete recommendations for increase of efficiency of binary algorithm of bats for the solution of dynamic problems of discrete optimization in general is created.
Keywords: system analysis, discrete optimization, graph theory, dynamic problems of discrete optimization, agent-based metaheuristics, bat-inspired algorithm
The article presents information about the nature of working capital, its role in ensuring stability of the production activities of enterprises, negative trends, which entails the inefficient policy of working capital management, ways of improving policies of working capital management contractor.
Keywords: Working capital, working capital management, receivables and payables, contractors.