TECHNOLOGIES | |
Adzhemov A.S., Mishenkov S.L., Smirnov N.I., Kuskov V.D., Novikova Ye.L., Karavaev YU.A. Prospects for creating a system of distribution of exact time signals Keywords: References 1. Urlichich YU.M. Perspektivy razvitiya sistemy GLONASS // T. Comm. Telekommunikatsii i transport. Spets. Vypusk “Navigatsionnye tehnologii i uslugi”, June, 2010. М.А. Zemtsov, I.S. Trubin THE FRAME-BY-FRAME MASKING ALGORITHM TRANSFORMATION VIDEO The method of frame-by-frame masking transformation video, taking into in frame and between frames correlation of video. The mathematical model (MM) by frame of video is model of digital halftone images by discrete Markov-type arguments. Keywords: Markov process, masking transformation, videoinformation. References 1. GOST 28147-89. Sistemy obrabotki informacii. Zashita kriptograficheskaya. Algoritm kriptograficheskogo preobrazovaniya. 1990-01-01. М.: 1989. Legkov K.Ye. Wireless local networks IEEE 802.11: distribution of speeds mechanism Low quality of communication on any direction of wireless local area network communication under control of IEEE 802.11 protocol with the distributed mechanism of access to a transmission medium influences all remaining corresponding pairs of nodes and on the whole network. The reason of it is in time reduction of channel occupation by stations using high speed of transmission at the expense of increasing time of channel occupation by stations transferring packets at low speed. References 1. Legkov K.Ye., Donchenko A.A. Analiz sushchestvuyushchih algoritmov raspredeleniya chastotnogo resursa besprovodnyh setyej spetsialnogo naznacheniya / / Sbornik trudov SKF MTUSI , 2009. Rostov-na-Donu: MTUSI SKF, 2009. — P. 50-52. M.S. Libman, A.V.Mazin Analysis efficiency of proposed method of the increase of accuracy of estimate of cardinality the queries with a subquery of search of the data, satisfying to a template Keywords: Data bases, query optimization, cardinality, optimizer, intercomparison of methods the estimate of cardinality, DBMS. Authors the developed and experimentally revised the way of optimization of the queries which are carried out in a database, on the basis of the analysis of values of conditions of predicates in earlier executed queries is offered. References 1. Dyeit K. Dzh. Vvedenie v sistemy baz dannyh. M:. Izdatelskii dom Vilyams, 2005. — 1382 p. Danilov A.N., Kaiyumov S.T. ANALYSIS OF TRAFFIC PARAMETERS FOR MULTIPLEXED CHANNELS WITH FRAME RELAY In this work, an analysis of traffic parameters on the multiplexed channels with frame relay multiservice access network in the Republic of Tajikistan. References 1. Borovikov V.P., Borovikov I.P. Statistica-statisticheskii analiz i obrabotka dannyh v srede Windows. — M: Informatsionno-izdatelskii dom “Filin”, 1997. — 608 p. Ivan Titov Characteristics of the data flows generated by a Web-server Web servers generate the major part of the Internet traffic. Knowledge of the Web traffic structure is necessary in order to support the quality of service effectively. Containing data of various types and volumes file servers constitute a significant part of resources in a network. This paper describes the traffic of Web server providing access to the musical content. Analysis of data traces shows that generated by Web server traffic can be separated onto several data flows, based on a distribution of file sizes, requested by user. The main characteristics of these flows such as a number of arrived requests and a volume of transferred data from server considerably differ for various data flows. Keywords: Web server, distribution of file sizes, TCP session, data flows, network traffic analysis. References 1. Tsitovich I.I., Titov I.N. Ob osobennostyah trafika dannyh servera, predostavlyayushchego dannye razlichnogo obema // Trudy RNTO·EES im. A.S. Popova. Seriya: nauchnaya sessiya, posvyashchennaya Dnyu radio. Vypusk: LXIV. — M, 2009. — P.345-347. Vanyukov A.YU. STATE ROLE IN REGULATION OF TELECOMMUNICATION In article results of research of noise stability in a communication channel in the presence of a casual interfering signal and several spread-spectrum signals are resulted. Various ratios on power between transferred signals are considered. In communication channel model quantization and discretization are considered. Calculation of an error ratio is made on the basis of model which is set in the form of mathematical expressions in program MathCAD. The considered way of transfer is intended for protection of the transferred information. Keywords: spread-spectrum signal, signal-to-interfering ratio, sample, error ratio, interfering signal, model. References 1. Prokis D. Tsifrovaya svyaz. Per. s angl. / Pod D redaktsiyei. D. Klovskogo. — M: Radio i svyaz, 2000. — 800 p.
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TRANSPORT | |
Elena Stroganova Transport security depends on the radio communications Keywords: sprea Quality and reliability of communications largely determine the safety of modern transportation. Today, wireless systems and communications equipment used in transportation for the organization of the operations center, the station, repair and operational communications, communications within the vehicle monitoring systems and motion control for maintaining the infrastructure, as the “last miles” in data networks, etc. The Transport introduced high-precision positioning using satellite navigation systems (SSRN), radio frequency, radio monitoring, radio control. Transport development and the development of radio technologies used in transport, interdependent and interrelated. References 1. Leshchev A. V. Tehnologicheskaya radiosvyaz na baze standarta GSM / / Zheleznodorozhnyi transport, 2009. — № 3. — P.68 – 69.
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SAFETY | |
Korchagin S.I., Pavlov V.G. Selection of criteria for choosing the optimal variant of IС PPS in terms of resource restrictions Using a game situation and the model of an integrated complex of physical protection systems (IC PPS), which establishes the relationship between the parameters of motion of the offender, a particularly important subject, the composition and structure of the complex [1], it is possible to develop conditions and to carry out a choice of criteria for the optimal variant of the composition and structure of the IC PPS. References 1. Korchagin S.I., Pavlov V.G. Opisaniya modeli dvizheniya narushitelya otnositelno aktivnyh sredstv nablyudeniya v kontroliruemoj zone / / Zhurnal “Informatsionnaya bezopasnost”. — №4, 2010.
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ECONOMY | |
Goryunov Ye.V., Shkolnik I.S. Contact management in telecommunications The Russian telecommunication companies, which work with a great number of foreign suppliers, as a rule, aspire to unify approaches to drawing up of contracts and their execution. Practice of preparation of difficult contracts also becomes especially important in active development of the new markets, globalization. So, in particular, the urgency of the specified theme for communication branch confirmes following tendencies: increase in export and import of specialized software and hardware systems, the equipment; building of foreign segments of a network and of the Russian communications service providers interface knots; increasing value of branch sectoral international regulatory bodies, standardization and certification References 1. N.P. Reznikova, Ye.V. Demina, V.B. Bulgak, A.V. Golyshko, V.V. Makarov, V.O. Tihvinskii, Ye.B. Aleksyeev. Menedzhment v telekommunikatsiyah / Pod red. N.P. Reznikovoi, Ye.V. Deminoi. — M: Eko-Trendz, 2005. — 392 p. Ivanov O. V., Ivanov P. V. State role in regulation of development of telecommunication infrastructure Keywords: The uniform information environment, national information-telecommunication infrastructure In the conditions of continuous development of a social and cultural infrastructure there are preconditions for constant increase in intensity of an information-communicative stream. These changes cause of revision of approaches at which state regulation of development of an industrial both information infrastructure, and communication infrastructures is required. References 1. “The concept of the state information policy of the Russian Federation” (it is approved at session of Committee of the State Duma on the information policy and communication on October, 15th, 1998). |