The study on the example of the choice of SAP UI Technology for the development of a subsystem of planning and actual time tracking has shown the proposed method of selecting one of the available technologies for construction of a subsystem based on a particular platform. The developed method includes the analysis of the features, advantages and disadvantages of each of the possible technologies and then a well-formalized decision-making process of choosing one of the technologies based on the analytic hierarchy process.
Keywords: multicriteria problem, the method of analysis of hierarchies, the architecture of software systems, the user interface, SAP ERP, SAP UI Technologies
The main purpose of this article is to demonstrate the advantages of statistical analysis of asymmetric relations between test items in the development of computer versions of psychodiagnostic tools. The main idea is that the statistical analysis of asymmetric relations between test items allows to describe the internal structure of the test in the form of incomplete oriented graph. The authors also attempt to identify some areas of possible applications of this analysis in psychodiagnostics and psychometrics: adaptive testing; assessment of discriminatory power of the test task; determining the reliability of the data. The authors base their arguments on analyzing results of 172 subjects tested by the Russian version of MMPI.
Keywords: Computer psychodiagnostics, adaptive testing, conjugation of variables, probability, statistical relationship, association, graphs
The paper presents a hierarchical design model of a complex multicomponent distillation columns, constructed with the use of entropy modeling method. Drawn up and implemented an algorithm solutions. Examples of design calculations was shown .
Keywords: multicomponent distillation, design calculation, complex column, Jaynes formalism, principle of maximum entropy, entropy model.
Today geographical information systems are used by operating companies for solving extensive distributed utility networks service and development issues. Designing and the subsequent creation of geographically distributed corporate enterprise geodatabase is needed for taking into account the requirements imposed by all divisions of the enterprise on GIS. On account of the complex distributed multi-level structure of the enterprise database the detailed consideration of all elements, parts of the enterprise geodatabase, is required. The enterprise database structure has been considered from the point of view of the database elements. The database of the whole enterprise is a set of databases of enterprise local subdivisions. The divisions use data about neighboring division territories in their work to perform their tasks. The subdivision database consists of two parts: a unique chunk and data about neighboring division objects. The base of the common data includes objects information which is required for more than one local subdivision. The data required for three neighboring divisions is a crosscutting of three neighboring division databases. Corporate database and entering into its composition local subdivision databases consist also of an attributive and spatial information. Besides it is necessary to perform spatial differentiation, layer differentiation and attributive field differentiation for more flexible monitoring of access permissions in the database. The suggested approach based on the set-theoretical spatial data presentation and analysis allows to realize the consistent structure of the distributed database.
Keywords: geographical information systems, corporate geodatabase, distributed database, database structure designing.
The fundamental work of two researchers (Gorelova G.V., specialist modelling of complex systems, and Ryabtsev V.N., specialist in geopolitics), which is a new step in the scientific works of both. Shows the relevance of the research topics. Detail the scientific environment that contributed to the formation of a new scientific instrumentation research - methods and techniques of geopolitical analysis. Marked the most important phase of the fundamental work that is associated with the development of the unit of cognitive modeling and its subsequent adaptation to events and processes in the international geopolitical sphere. Assessed in the historical context of development work. The prospects of the development and application of the technology of cognitive modeling to be used directly in scientific practice.
Keywords: cognitive modeling, geopolitics, methods, dynamics, the Black sea-Caucasus-Caspian
"Realization of ensuring radiation safety in the projected technological processes of the equipment dismantle when the NPP blocks being taken out of operation is considered. The material is intended for the experts taking part in the development of projects of taking the NPP blocks out of operation."
Keywords: NPP block, taking out of operation, equipment dismantle, technological process, radiation safety, procedures of ensuring radiation safety
Considered routing problem in information network in which there are arcs that does not affect the signal quality - neutral and reduce the signal quality - regressive, as well as vertices which improves signal quality - active, and vertices does not affect the signal quality - neutral. The problem reduces to finding the shortest path on the set of paths satisfying the additional restriction - on any segment of the path enclosed between two consecutive active vertices contains no more than a predetermined number of regressive arcs (the same applies to the segment from the beginning of the path to the first active vertex and from the last active vertex to the end of the path, as well as to the ways without active vertices). For such graphs described construction of the reamer - auxiliary graph that allows to find the solution of the problem with restrictions on the original graph as the solution of the corresponding problem without restrictions on the reamer.
Keywords: graph, path, reachability, reamer of graph, routing
This article analyzes the different drivers work with database management systems, namely: MySQL, PgSQL, SqLite; - When a large amount of data in a single table. For a comparative analysis table used in the amount of 100,000 records. Identified positive and negative aspects of database drivers compared with each other, and on the basis of the data obtained on their productivity.
Keywords: database, primary key, foreign key, relational database model, database management system, php, laravel, mysql, pgsql, sqlite
The purpose and objectives of this work is to develop methods of planning the path of the mobile autonomous robots operating in environments with unknown location of obstacles. The result of the article is vague planner travel path of autonomous mobile robots for three-dimensional space (3D environments). The results differ from known analogues structure proposed planner, consisting of two interconnected parts, designed for use in horizontal and vertical planes, context-sensitive coordination method "simple" behavior of the mobile robot, a set of rules governing the method of prevention "jam" in the obstacles.
Keywords: Quad copter, management, uncertainty, decision making, fuzzy logic
А key element in the system of public administration by labor protection is receiving reliable information about a condition of working conditions depending on levels of influence of harmful and dangerous production factors. Instrumentional monitoring of workings conditions on workplaces is carry on production control of harmful production factors and procedure of a special assessment of working conditions by test laboratories. Thus one of the tasks demanding the decision is development of algorithm of process of a choice of the measuring instruments satisfying areas of accreditation of test laboratory and to the state requirements to performance of these works. For the solution of an objective the author offers a technique of an optimum choice of the instrument equipment which basis the method of expert evaluations (rank correlation). According to basic provisions of a technique in scientific work the algorithm of process of a choice of measuring instruments for carry on of instrumental control of harmful production factors is presented. Criteria of a choice of devices are considered. The mathematical model of process of a choice of measuring equipment including ranging of criteria of a choice of devices is described. According to results of ranging the leading, essential and less significant criteria of a choice for the instrument group participating in experiment are defined. In view of the leading and essential parameters of a choice of the equipment, the complete set of test laboratory by the necessary instrument equipment, according to area of analytical tasks and conditions of measurement install.
Keywords: instrumental control, monitoring of harmful factors, the method of selection of equipment, means of measurement, method of expert estimations
In recent years, a greater interest in steganography is growing as an effective method of protection of still images, allowing you to keep the information confidential. In this paper we assessed robustness to hide information in the frequency domain of still images. Using qualitative and quantitative characteristics determines the optimal values for the Corvi method.
Keywords: information security, steganography, wavelet transform, data hiding, multiresolution analysis, the watermark
Distortion assessment of a wavelet-based watermarking method for low frequency subband
Keywords: information security, steganography, wavelet transform, data hiding, multiresolution analysis, the watermark, PSNR
In this paper we propose mathematical model of salient-pole synchronous generator of mini-CHP. The model is based on a full Park-Gorev differential equation. The saturation of the machine is taken by using the method of partial magnetic characteristics. This method allows most accurate evaluation of the change of parameters of an equivalent circuit of the generator in the absence of information about the magnetic properties of the machine. The model is Implemented in Simulink. Application of the model is possible when calculating the steady-state and transients in distribution electrical net wich contains salient pole synchronous generators.
Keywords: salient-pole synchronous generator, mathematical model, Park-Gorev differential equation, magnetic characteristics, transients
The laboratory studies the dependence of breakdown voltage of the spark plug gap on the polarity of the high voltage generated ignition system, air density and the size of the spark plug gap. The studies were performed using the tester spark under pressure. With a resistive voltage sensor made visualization, transformation and analysis of information on the magnitude of the breakdown voltage. Produced processing waveforms shown that flashover occurs regardless of the magnitude of the gap and is determined by the rate of rise of the secondary voltage of the external shape of the electrode and insulator spark plug. To reduce the breakdown voltage should be selected polarity when the cathode is the breakdown of the central electrode of the spark plug. Reversal may allow push surface breakdown in the zone of higher pressure in the chamber of the device, albeit with an increase in the breakdown voltage of the spark gap.
Keywords: ignition system, spark, spark ignition, ignition coil, motor, electrical equipment, ignition sparkplugs, breakdown voltage
The investigation and analysis of noise characteristics of the traffic flow via a directional microphone. The principle of operation of directional microphones and test procedures. Full-scale research made microphone-controlled lane highway. When approaching the vehicle to the maximum level of the microphone signal is necessary at the time of finding the vehicle in front of a microphone. Investigations at the location detection hole up from the road surface to the left (toward the oncoming lane controlled by car) and right (after moving band controlled by car). Location detecting holes toward the oncoming lane controlled by car is the best, as it allows to ensure minimum impact on the accuracy of counting cars traveling on the adjacent oncoming lane.
Keywords: noise characteristics, transport stream, passive acoustic detector, directional microphone
Problems with different types of API with Facebook and Twitter social networks an example. Using the Facebook Graph API to retrieve data from the social graph Facebook. Scheme of work Streaming and type REST API.
Keywords: API, application programming interface, Facebook, FQL, Facebook Graph API, Twitter, twitter streaming api, rest api, streaming api
Working with big data work involves a huge amount of information and content, rapidly renewable, located in different sources. Tasks work with large data required for efficiency, are used to create new products and enhance competitiveness. This article describes the following methods for working with large volumes of data: MapReduce, Percona server.
Keywords: Gig data, Concurrent computing, map, reduce, mapreduce, percona server
As subject of researches in the scientific article problems of instrument and methodical equipment of the monitoring system and monitoring of dangerous and harmful production factors of the enterprises of mechanical engineering act. For the solution of an objective the technique of a choice of measuring instruments uniting achievements of fundamental analytical chemistry and practical experience of test laboratories is offered. Leaning on the offered technique, the function chart of the mobile control and measuring complex intended for an assessment of the physical production factors and the chemical polluting substances in air of a working zone determined by express method is developed. The devices which are a part of a mobile control and measuring complex completely cover the list of indicators of the harmful production factors controlled in the course of production control and a special assessment of working conditions. The function chart of a mobile control and measuring complex has a flexible configuration, is capable to be modernized depending on parameters of objects of control and technical novelties in the field of instrument making.
Keywords: tool control, monitoring of dangerous and harmful production factors, technique of a choice of the instrument equipment, measuring instrument, mobile control and measuring complex
The article considers one of the solutions to the problem of multi-criteria selection. Weights of the importance of the individual criteria are considered as uncontrolled factors and are calculated on the principle of guaranteed result at each point of the selection area. The method also allows taking into account the additional qualitative information about the DM preferences on the set of individual optimality criteria. Qualitative information about the preferences may be incomplete and may not provide a precise numerical estimates. The article provides analytical expressions for the automatic calculation of importance weights of taking into account individual preferences using the generalized logical criterion. The article considers the problem of approximating the area of efficiency in multiobjective optimization problems using the generalized logical criterion of optimality and makes the analysis of Pareto-efficiency area.
Keywords: decision making problem, multiobjective multicriteria optimization, qualitative additional information, guaranteed result, weighting coefficients, approximation of the Pareto-efficiency area
The article deals with the nature of interrelation of the phenomena ""preservation of national value traditions"" and ""ensuring economic dynamism"" in the context of the strengthening of the national security of Russia in the era of information revolution and the transition to new technological way which is characterized by such relevant characteristics as the intellectualization of industries, the development of new technologies of management and continuous education, the formation of cultural and informational environment. The models of cultural enlightenment and cultural development focused on the resources provision and technological support of socio-cultural and economic (in the innovative vein) development of the country through the partnership of the state and society are described in the article, taking into account the state cultural policy tools as author’s cognitive methodological construct aimed at the accumulation of powerful protective potential of the Russian culture in the practice of public administration.
Keywords: State cultural policy, national security, cultural enlightenment, cultural development, “soft power”, innovative development
In the article method based on application of artificial neural networks for forecasting of the remained work time on the basis of equipment operational condition analysis is considered. Transformation of telemetric data with application of a generalized Veibull distribution function had reduced influence of noise factors. Validation mechanism is introduced for increase of forecasting accuracy and definition of conditions of neural network training end. A comparative study is performed between the proposed method and known one. The results demonstrate the advantage of the proposed method in achieving more accurate remained work time prediction.
Keywords: artificial neural network, forecasting, remaining work time, Veibull's distribution, oil and gas extraction equipment
The paper considers the algorithms of position-trajectory control of mobile objects, are automatically distributed control forces and moments on the actuator. The basic control law is based on the equations of kinematics and dynamics and method of position-trajectory control of mobile objects. We consider the distribution of control forces and moments on the basis of pseudo-inverse matrix, which provides minimum MSE. This approach does not provide for preliminary separation of control channels, as is customary in classical systems of mobile objects. The proposed method is applied to the control system of aeronautical complex. The cases of excessive and insufficient number of control channels. The results of the simulation.
Keywords: position-trajectory control, a multiply, actuators, mobile object
In the article the method of automated analysis of polysomnographic (PSG) study is described designed to detect sleep event named "sleep spindle". PSG study by its origin is rather long (8-12 hours) and because of that automation of its analysis is an actual problem. In the text the process of processing and analysis of PSG study is described stage by stage. The algorithm can be divided in to the following stages: selection of the window size and offset value for FFT, detection of dominant frequency for each interval, building the distribution of dominant frequencies (histogram), selecting the frequency value from all frequency range that probably will match the sleep spindles frequency. Following this from the preliminary selected intervals with the known values of dominant frequencies the ones are chosen which are correspond to the value of sleep spindles frequency. The last stage is the control of the condition of event duration. The description of the algorithm is illustrated with the real recording illustrations for each step.
Keywords: polysomnography, PSG, sleep spindles, sleep, sleep events, EEG
A modern trend of scientific publications development shifts toward the network environments to an even more considerable degree. In practice, the new culture of the scientific publications is forming on basis of the global and mini Internet-platforms. The discussion of the comprehension experience and overcoming the different rating problems is suggested in the context of a science webzine “Engineer bulletin of Don”. It is observed that as the position of science webzines becomes stronger in the common space of the science magazines, there is a tendency to revising their evaluation criterion. Besides, the implementation of rates or coefficients prevails, the applicability of which relative to the science webzines is exogenous, i.e. it disclaims the aims of the science webzines. The application of restrictions, worked out within the framework of the traditional paper book-printing technology, is indicated to be unpromising. A new level of the science environment systemacy is suggested to be supplemented with the formalization of scientific evaluation rations, already existing and successfully maintained de facto, within the framework of the webzines – the Internet-platforms.
Keywords: the electronic scientific journal, Internet platform, interdisciplinarity, open access, impact factor, ranking
In this article the history of the relation to a drug addiction question in a number of the countries is considered. The main approaches to drug addiction prevention, including, and in the youth environment are presented. It is consecrated both the international and domestic experience of the solution of this problem.
Keywords: addiction model of prevention, drug addicts, social events, assistance centers, potential drug users, social institutions