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ENGINEERING BULLETIN

Bauman Moscow State Technical University

Instrument Engineering

77-48211/637968 The concept of development and organization of a system of transparent access to large files and RAID in a distributed heterogeneous environment
# 09, September 2013
УДК: 004.63
MVinogradova, V.I. Belousova, V.N. Melnik
For realization of transparent access to files in the distributed cross-platform environment and to RAID it is offered to create file archive with possibility of fast search of files on parameters or on a template. In article the basic principles of development of file archive which consists of the RAID, a database with a meta-information, the ftp-server and client part are considered. Offers on structure and architecture of a program complex, structure of a database, technology of access to data, algorithms of ensuring transactions and detection of duplicates of files are developed. The offered concepts are universal and can be applied when developing the concrete application.
77-48211/637941 The technology of using LibreOffice/OpenOffice program's components and functions for developing document processing application
# 08, August 2013
УДК: 681.5
MVinogradova, V.I. Vinogradov
For development of cross-platform document processing application it is expedient to include functionality and visual components of existing office suites. The article defines the typical features of document processing and reporting. The methods and technology of using LibreOffice/OpenOffice office suite's components and functions for developing of programs to create reports are proposed. Possibilities of packages and methods of their integrating into the application for document editing, formats converting, database interaction, and data export are considered. Suggested methods for application integration with office packages allow to reduce the costs and time for development programs and increase the efficiency of their operation.
77-48211/404607 Fuzzy Chaplygin problem
# 05, May 2012
E.R. Muhammetjanov, I.A. Mochalov
We solve the problem of aerial photography as an equivalent variation problem with given functional and accurate boundary conditions; this problem includes obtaining the fuzzy trajectory of the plane flying round the maximum area at crosswind, which affects the plane with constant given fuzzy velocity. The object model was defined as a differential equation without constraints on the control and coordinates. It was shown that optimal flyby trajectory in the polar coordinate system was represented as a fuzzy ellipse.
77-48211/368736 Research of double exposure mask technology’s critical parameters
# 05, May 2012
A.E. Averyanikhin, D.V. Tihomirov
Algorithms of topology transformation of submicron VLSIC, oriented to application for several classes of complex function blocks, designed for further manufacturing according to the technology of double exposure mask and met the demand for reproduction of given topology according to the technology of double exposure mask.
77-48211/361977 Laser gas analysis for complex low-component mixtures
# 05, May 2012
M.L. Belov, V.A. Gorodnichev, L.N. Eremenko, N.I. Narykova
The paper describes the problem of gas reconstruction in laser gas analysis.Signal processing procedures based onmethod of Bayesian estimator were describedfor the differential absorption method. It was shown that usage ofBayesian estimator allowed to solve the problem of gas reconstruction for complex low-component gas mixtures efficiently.
77-48211/359541 Statistical dynamics of second-order phase-locked loop under the influence of combined noise.
# 05, May 2012
B.I Shahtarin, T.G. Aslanov
A comparative analysis of statistical characteristics of phase locked loop was carried out, when harmonic interference along with noise influences on its entrance. As the result of solving of Fokker-Planck-Kolmogorov equation (FPK), the probability density function (PDF) of the error signal, the average time until loss of synchronization and the probability of skipped cycle were obtained. The comparison of two approaches of obtaining of statistical characteristic was carried out.
77-48211/351639 Enhancement of search requests with encyclopedic knowledge
# 05, May 2012
O.V. Peskova, T.M. Bagautdinov
The possibility of search request processing with bringing in the additional knowledge of open encyclopedia Wikipedia was considered. New algorithm for request enhancement, using semantic data from the specified source, was developed. System allowing to search through the collection of documents using advanced request, was designed and developed. The efficiency of the search in the developed system was estimated for ordinary search along with two variants of developed algorithm of search enhancement: using HITS algorithm and using Dice’s coefficient to obtain the key concepts.
 
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