The article considers the problem of maximum flow of minimum cost finding in fuzzy dynamic transportation network. The relevance of the problem is in its wide practical application on the rail, air, sea and other roads in finding of routes of minimum cost. The feature of the problem statement is that fuzzy nature of the network parameters, such as arc capacities and costs is taken into account. It allows us to make decisions more sensitive to environmental changes. The dependence of network parameters from flow departure is also considered, that allows to introduce the notion "dynamic" network as opposed to "stationary-dynamic", examined in the literature. The algorithm for solving the described problem in fuzzy conditions is proposed. To illustrate the algorithm a numerical example is presented.
Keywords: dynamic network, maximum flow of minimum cost, fuzzy numbers, arc capacity, transit time
"Examines the relationship of the concepts on the example of post-war reconstruction of post-war reconstruction of the city of Rostov-on-Don.
In 1945, the Chairman of the Committee on Architecture AG Mordvinov announced seven conditions under which you can create the city.
In 1945, the development of the urban plan of rebuilding the city of Rostov-on-Don was appointed academician of architecture VN Semenov.
In 1949. master plan was finalized at the construction site.
In general, the basic idea of the architect was executed. Among the fifteen cities prone to restore the city of Rostov was restored in all seven conditions put forward by the Chairman and the Committee for Architecture AG Mordvinov, projected architecture academician VN Semenov and given a reality by means of the chief architect of YA Rehbein."
Keywords: master plan, concept, post-war reconstruction, the condition of the city
Briefly discussed the theoretical model of the spectrum of RR intervals and its changes depending on the processes taking place. Made a device for measuring cardiointervalogramms (CIG). Obtained from the renting of data, of varying duration and frequency shall be recorded for further processing. The analysis revealed that the resulting spectrum satisfies the conditions considered in the theoretical model, and can be further analyzed with fractal characteristics. Such an analysis is of great importance in the diagnosis of the patient directly to the duration of the therapeutic procedure for the optimization of both time and intensity exerted influence.
Keywords: CIG; fractal series; the spectrum of RR intervals
In this paper, a new simple and accurate hybrid table/analytical model of the MOSFET drain current based on the interpolation of table parameters is proposed. This new hybrid table model has an accuracy similar to the pure table models but requires no complex parameter extraction. The drain current in the hybrid model is calculated as the product of the analytical model current and the correction factor approximated by two-dimensional series.
Keywords: MOS-transistor, MOSFET parameters, cryogenic temperature, parametric identification
The paper discusses possible options for the use of genre classification results of Web documents in search engines. The proposed methods can improve the quality of search engines.
Keywords: Web document classification, text documents, search engines, search engine results page, search quality, diversity
The paper shows the feasibility of using a current amplifier in the filters RF and microwave ranges. By analyzing the basic structure of the second-order level sufficient conditions for the efficient use of active elements. The examples of methodological nature and formulated conclusions of practical importance.
Keywords: RF filter, microwave filter, parametric sensitivity, current amplifiers, functional modeline setting
One of the problems when storing large amounts of data is a rational choice of media. In this paper we evaluated the possibility of using magnetic tape, CD, DVD, Blu-ray discs, hard disk drives, drives to flash memory (SSD) for storage of large volumes of data with respect to reliability, performance,.cost and high-speed storage. The analysis showed that solid state drives can be used in case of the need for ultra-fast access to live data. The hard disk drive can be used as primary storage devices for storing operational data. DVD and Blu-ray library can be used for archival storage medium volumes (tens of terabytes). Tape libraries can be used to store very large volumes of data (terabytes or more). The lowest cost of storing 1 GB of data is $ 0.03 when you use tape libraries. The most expensive storage 1 GB solid state drive ($ 0.85).
Keywords: storage devices, data storage, storage drive
The state of the atmospheric air in such industrial cities of the Rostov region, as Belaya Kalitva, Donetsk, Kamensk-Shakhtinsky over the last 10 years (2003-2012). Identified main pollution sources and priority pollutants. Analysis of the concentrations of pollutants in areas of concentration of industrial enterprises, on highways and in dwelling zones. It is established that industrial cities are specific «geochemical provinces», in which abnormally elevated concentrations of many chemical elements. On the background of the decrease of the role of industrial enterprises in the air pollution increases the role of motor transport
Keywords: Anthropogenous influence, industrial production, ecological situation, environment, an ecosystem, the industry, transport, pollution.
The article is about generators of random numbers (GPN) constructed on points of an elliptic curve and algorithms of development irreducible polynomials over prime fields. It describes their advantages and main features. The authors analyzes the algorithm of development GPN constructed on points of an elliptic curve with using irreducible polynomials of degree three over finite fields. In this approach, calculations were made in the system of residual classes. According to the results of computer simulation shows the advantages of algorithm in speed and security of a cryptosystem.
Keywords: the generator of pseudo-random numbers, elliptic curve, system of residual classes, cryptographic security, irreducible polynomials
This paper presents a method of constructing microwave selective amplifiers, which allows control Q and voltage gain at the frequency of quasi-resonance. The presented architecture selective amplifiers for SiGe process technology have low power consumption.
Keywords: RC-filter, good quality, controlled selective amplifier, gain, frequency quasi-resonance
The description of electrodynamic model of the receiver of ultrasonic radiation on the basis of a piezoelectric is presented. Modelling was conducted with use of a method of electrodynamic analogies. The given method allows to apply an accessible arsenal of computational methods of electric circuits as analogues of the composite dynamic systems which class systems of monitoring of waterpipes concern.
Keywords: acoustics, the control, piezoelectric transducer, the water pipeline.
"The concept of the nested metagraph as the model of a complex object with different levels of generalization is introduced. It is shown that the nested metagraphs reflect the general system concept for description of complex objects with synergistic effect. This approach enables moving from the set-theoretic description of complex objects to their algebraic-theoretic description, thus increasing the model adequacy to real-life objects. The application of the nested metagraphs, in particular to business-intelligence and semantic search is considered. "
Keywords: nested metagraphs, complex object, hyperedge as the essence, business analysis, a semantic network
In the implementation of dynamic re-routing of traffic it is important to notice that the threshold depends on the network layout and type of the roads. Full paper includes appropriate relationships, figures and analysis of simulation results to define the re-routing period of dynamic traffic rerouti
Keywords: re-routing, cycle, dynamic traffic assignment, level of services
To estimate the effectiveness of forest machines developed technological possibility coefficient. Coefficients reflect the ability to provide a given performance of transport vehicles in the logging, the decline in the quality of the skid road surface. Method allows determining the amount of logging residues, necessary for the skid road construction. At calculating the available volume accounted for logging residues. Resources of logging residues are calculated depending on the type of timber and the length of skid road. The method allows selecting the optimum system of machines to work in these natural production conditions or schedule performance loss due to reduced carrying capacity of skid road.
Keywords: Cross country, technological passableness, forest machines, bearing capacity of soils, skid road, wood types, logging residues
The paper focuses on one of possible approaches to decision support problem, which is based on multi-agent simulation modelling. Most decision support cases generally consist of a set of available alternatives definition, estimation and selection of the best one. When choosing a solution one needs to consider a large number of conflicting objectives and, thus, to estimate possible solutions on multiple criteria. Multi-agent resource conversion process model was developed on the basis of several approaches integration: simulation and situational modeling, expert and multi-agent systems, object-oriented approach. The multi-agent resource conversion process model was extended elements coalition. Apparatus of conflict modeling was extended communications. Creation and disintegration processes of coalition are starting structural and parametric changes in multi-agent resource conversion process model. Coalition multi agent model of resources conversion process was implemented in decision support system BPsim.
Keywords: resource conversion process, multi-agent system, intelligent agent, coalition, decision making