Сучасні проблеми радіоелектроніки, телекомунікацій, комп'ютерної інженерії
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Item Progress in the analysis of the electrical generator of the heart(Видавництво Львівської політехніки, 2010) Chaikovsky, Illya; Budnyk, Mykola; Najafian, Mokhammad; Martynenko, Serhiy; Dovbysh, Anatoly; Budnyk, Vitaly; Kovalenko, OleksandrAim of study is to develop understanding of the heart electric generator based on classification of current density distribution (CDD) maps with help of information-extreme intellectual technology (IEIT). Errorfree decision rules were obtained in learning population. Decision rule for test Healthy–CAD was examined based on 203 healthy volunteers and 256 CAD pts and sensitivity and specificity equal to 93% and 87 %, respectively, have been achieved.Item Features of use wavelet transforms for processing and analysis of rail fault detection signals(Видавництво Львівської політехніки, 2010) Nichoga, Vіtaliy; Pavlysh, Volodymyr; Romanyshyn, YuriyIn this paper the features of use continuous and discrete wavelet transforms for processing and analysis of experimental signals of rail fault detection are considered.Item Optimization of microwave device(Видавництво Львівської політехніки, 2010) Naumets, MykolaThere have been considered the elements of the technique of optimizing the process of the passive microwave development and design and its results.Item About expediency of use of the reemission of photons for increasing light intensity of multilayer LEDs that can be exposed to radiation(Видавництво Львівської політехніки, 2010) Irkha, Vasily; Gorbachev, VictorOn the basis of the obtained experimental regular dependences the probable causes of the degradation of emission of multilayer GaAlAs-LEDs after gamma irradiation are considered.Item The methodology of modeling available for data traffic bandwidth telecommunications network(Видавництво Львівської політехніки, 2010) Polschykov, Kostiantyn; Strjuk, Olexij; Rvachova, NataliaIn this paper, the statement and solution of the important scientific problem of development the methodology of creation of adequate models simulating the timely changes of network throughput amount, available for the data traffic transmission are considered.Item Evaluation of losses of Kam’yanets’ – Podil’skiy as a result of the harmful emissions by motor transport(Видавництво Львівської політехніки, 2010) Honchar, Lyudmyla; Shpintal, Mykhailo; Kushnir, OksanaThe method of calculation of the emissions of contaminating matters into the air by transport vehicles was researched in the article. The evaluation of losses made to the environment by harmful matters and greenhouse gases of motor transport of Kam'yanets' - Podil'skiy was conducted.Item Messages analysis plan formation by the information network operator(Видавництво Львівської політехніки, 2010) Subach, Igor; Saenko, Olexanderthe methodology of message analysis plan formation by the information network operator about the parameters of its functioning and state is examined in this article.Item Modeling of threshold voltage in three-dimensional SOI-structures(Видавництво Львівської політехніки, 2010) Kogut, І. Т.; Scherbyak, V. М.This paper proposed an original approach to the analysis of the threshold voltage metal-oxidesemiconductor structures based on local three-dimensional SOI-structures.Item Monitoring mobile network of control functional state of sportsmen(Видавництво Львівської політехніки, 2010) Boyko, V.; Nel'ga, А.; Reyderman, Y.The personal mobile network is offered for monitoring of power indexes of organism of sportsmen – rowers and estimation them the functional state during a training process.Item The analysis of the characteristics of routing protocols in IP networks(Видавництво Львівської політехніки, 2010) Bezruk, Valery; Varich, VyacheslavConsidered the most common routing protocols with different types of delivery (unicast, multicast) as well as technology and ways of organizing Multipath routing. At this stage, made a comparative analysis of protocols unicast (RIP, OSPF and AntNet) and multicast (DVMRP, MOSPF, PIM-DM, CBT and PIM-SM) routing and provide recommendations on their practical application.Item The location of transcoders in multiservice networks(Видавництво Львівської політехніки, 2010) Shevchuk, RuslanIn this work researches the location of transcoders in multiservice networks. The analysis of structures of location transcoders allowed to select and compare the main features. The analysis showed that the bottleneck of centralized schemes is the server, and distributed - the performance of terminals.Item A flow-based model of two-level routing in multiservice network(Видавництво Львівської політехніки, 2010) Lemeshko, Olexandr; Hailan, Ahmad M.; Ali, Ali S.In this paper an approach to the flow-based modeling of two-level routing in multiservice networks is considered. The model supports the source routing. At the low level – the level of edge routers – the routes are directly computed, and at the top level the received decisions are coordinated for excluding overloads of communication channels in a multiservice network.Item Status and prospects of differential navigation and high precision positioning GNSS-technologies in Ukraine(Видавництво Львівської політехніки, 2010) Zhalilo, Alexey; Shokalo, VladimirThe results of the analysis of status and prospects of differential navigation and high precision positioning using GNSS and their functional augmentations in the world and in Ukraine are stated. The ways of implementation in Ukraine of up-to-date technologies and EGNOS, EUPOS systems, prospects and tasks of development of domestic satellite navigation service are analyzed.Item Technologies and applications of microwave photonic antennas(Видавництво Львівської політехніки, 2010) Yashchyshyn, Y.; Chizh, A.; Malyshev, S.; Modelski, J.This paper describes the development of microwave photonic antennas concepts and their applications. The experimental study of the transmitting and receiving photonic antenna are shown. The transmitting photonic antenna consists of photodiode integrated with microstrip E-shaped patch antenna, and receiving photonic antenna consists of laser diode integrated directly with the Vivaldi antenna.Item Simulation model of delta-sigma modulator(Видавництво Львівської політехніки, 2010) Kochan, Roman; Klym, HalynaItem Video signal forming block in scanning television microscope(Видавництво Львівської політехніки, 2010) Hudz, Borys; Matiieshyn, Yurij; Shkliarskyi, VolodymyrThere have been considered the ways of constructing a video signal forming block of the investigated microobject in scanning television microscope functioning in the television and little-frame modes of the raster formation. There has been developed the operation algorithm of the block as well as suggested the ways of frequency noises compensation in higher frequencies brought in by the high resistance.Item Lazer power supply based on multiphase resonance converters(Видавництво Львівської політехніки, 2010) Kazanivsky, MikhailoThe laser power supply construction structure has been proposed on the base of multiphase resonance converterItem Estimation method of speed potential Adsl2+ connections for grant of triple play service(Видавництво Львівської політехніки, 2010) Krikun, Vladimir; Brindziy, AleksanderThis paper considers the throughput of ADSL2+ (Asymmetric Digital Subscriber Line) modems, used for high speed data transmission. Digital subscriber line must agree minimum rate performance recommendations for delivery triple play applications through a broadband infrastructure. Estimation method of speed potential ADSL2+ connections is examined in this paper.Item The Change-point detection in rhythmocardiosignal by Neyman-Pearson criterion(Видавництво Львівської політехніки, 2010) Leschyshyn, Yury; Semchyshyn, Olexander; Dozorskyy, VasylRhythmocardiosignal (RCS) as the periodically correlated stochastic sequence is presented. Neyman-Pearson criterion was applied for the changepoint detection in RCS.Item Optimal choice of wind turbines combination based on customer’s requirements(Видавництво Львівської політехніки, 2010) Medykovskyy, Mykola; Shunevych, OlehThis paper presents a reliability-based approach to select appropriate wind turbines combination based on customer’s requirements. We present the algorithm for generating integer partitions in the standard representation.