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Effective Model Of System Of Detection Of Intrusion For Computer Networks
M.M. Karimov,D.Ya.Irgasheva,K.A.Tashev,R.I. Rakhimov 대한전자공학회 2008 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
In given article it is considered approaches of protection of the information for computer networks and multilevel model of detection and reflection of intrusions, protection against not authorized access to the information, providing creation of a hardware-software complex and the analysis of the traffic on the basis of complex application of new methods for computer networks.
About one way of increase of the system effectiveness of detection of intrusions
M.M. Karimov,K.A. Tashev 대한전자공학회 2008 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
In given article questions of classification of attacks and detection of intrusions in computer networks are considered and also the approach of increase of efficiency of systems of detection of intrusions is offered.
Rehman, M.M.,Yang, B.S.,Yang, Y.J.,Karimov, K.S.,Choi, K.H. Elsevier 2017 CURRENT APPLIED PHYSICS Vol.17 No.4
<P>Developments in organic bi-stable non-volatile memory devices have shown that organic materials are essential for the next generation of electrical memory unit owing to their low cost, high flexibility and large scalability. This study depicts an important aspect of organic memory devices by observing the effect of changing device structure on its switching characteristics. Memory devices with a bilayer and bulk-heterojunction structure were fabricated through an all printed technology by utilizing two organic polymers such as MEH: PPV and PMMA. Silver (Ag) was selected as the top and bottom electrode due to its high conductivity and easy processing. Though identical polymers were used in both device structures, but interestingly change in structure caused change in properties. It was observed that bilayer structure had much higher switching ratio and stability against various biasing cycles as compared to its bulk-heterojunction counterpart. Superior switching characteristics of bilayer structure were due to the presence of a well-defined interface between both polymers. Bulk-heterojunction device suffers the drawback of phase separation in a single organic layer between the two polymers. (C) 2017 Elsevier B.V. All rights reserved.</P>
Lim, Beomdu,Sung, Hwan-Kyung,Bessell, M.S.,Karimov, R.,Ibrahimov, M. The Korean Astronomical Society 2009 Journal of The Korean Astronomical Society Vol.42 No.6
Observation of standard stars is of crucial importance in stellar photometry. We have studied the standard transformation relations of the UBV RI CCD photometric system at the Maidanak Astronomical Observatory in Uzbekistan. All observations were made with the AZT-22 1.5m telescope, SITe 2k CCD or Fairchild 486 CCD, and standard Bessell UBV RI filters from 2003 August to 2007 September. We observed many standard stars around the celestial equator observed by SAAO astronomers. The atmospheric extinction coefficients, photometric zero points, and time variation of photometric zero points of each night were determined. Secondary extinction coefficients and photometric zero points were very stable, while primary extinction coefficients showed a distinct seasonal variation. We also determined the transformation coefficients for each filter. For B, V, R, and I filters, the transformation to the SAAO standard system could be achieved with a straight line or a combination of two straight lines. However, in the case of the U filter and Fairchild 486 CCD combination, a significant non-linear correction term - related to the size of Balmer jump or the strength of the Balmer lines - of up to 0:08 mags was required. We found that our data matched well the SAAO photometry in V, B - V, V - I, and R - I. But in U - B, the difference in zero point was about 3.6 mmag and the scatter was about 0.02 mag. We attribute the relatively large scatter in U -B to the larger error in U of the SAAO photometry. We confirm the mostly small differences between the SAAO standard UBV RI system and the Landolt standard system. We also attempted to interpret the seasonal variation of the atmospheric extinction coefficients in the context of scattering sources in the earth's atmosphere.