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Research Institute of Intelligent Computer Systems Ternopil National Economic University |
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2010, Vol. 9, Issue 2 |
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Contents and abstracts
CHEATING DETECTION AND CHEATER IDENTIFICATION Daniel Pasailă 1), Vlad Alexa 2), Sorin Iftene 2)
1) Computer Science Department, “ENS Cachan”, Paris, France In this paper we analyze the cheating detection and cheater identification problems for the secret sharing schemes based on the Chinese remainder theorem (CRT), more exactly for Mignotte [1] and Asmuth-Bloom [2] schemes. We prove that the majority of the solutions for Shamir’s scheme [3] can be translated to these schemes and, moreover, there are some interesting specific solutions.
FREQUENCY NOISE INFLUENCE ON FUNCTIONING Gennadiy P. Gorskyi, Vitaliy G. Deibuk
Chernivtsi National University, The influence of detuning of radio frequency magnetic field (RFMF) on the functioning of nuclear magnetic resonance (NMR) quantum Fredkin gate is considered in this paper. It is shown that detuning of frequency decreases a probability of correct answer. If the spectral broadband of RFMF signal is increasing, then the main value of correct answer probability is decreasing too and standard deviation of this probability is increasing. WEB-BASED CONTENT MANAGEMENT SYSTEM Maciej Dobecki, Wojciech Zabierowski
Technical University of Lodz, This paper describes how to design content management system using the newest web-based techniques. It contains helpful information that can be used during selecting programming language. It introduces multi layer architecture with description and functionality of each layer. It provides description of Model View Controller pattern and how to use it in multi-layer application design. It shows the most powerful Java frameworks that can be applied for each layer and how to connect them in simple way, using Inversion of Control container. It shows power of Spring Framework as business layer, Hibernate as integration layer and ZK Ajax as presentation layer. It proves, that Java combined with applicable libraries can be very powerful tool in good hands.
SIMULATION OF MECHANICAL SYSTEM STABILIZATION Olena Slavko
Kremenchuk Mykhaylo Ostrogradskiy State University, A simulation model of a mechanical system with a control algorithm based on the active resonance control approach is created. Methodology and virtual laboratory for researches of the simulation models of mechanical systems stabilization based on the active resonance control algorithm are developed. This virtual laboratory allows to research quality and stability of the active resonance algorithm for different types of mechanical systems and external disturbances for various initial conditions and environment parameters. The active resonance control algorithm for the first time is adapted and improved by using of numerical values of velocity and acceleration of a controlled object on each step of a simulation for a system described by a second order differential equation.
METHODS OF CREATING RICH USER INTERFACES Bartosz Sakowicz, Piotr Mazur, Marek Kamiński, Michał Wojtera, Adam Dębiński
Technical University of Lodz, Poland, The article, by describing features of sample application for project management, presents methods of creating graphical interfaces of modern applications that run in web browser environment. Sample program is written with the use of FLEX Framework and some FLEX supporting tools. The FLEX technology is described as well as other RIA techniques. MODEL OF ENVIRONMENT FOR INTERNET BASED SYSTEMS FUNCTIONING Larysa Globa, Tetiana Kot
National Technical University of Ukraine “Kyiv Polytechnic Institute”, Internet based information systems (IBIS), their functioning and design features are presented in this paper. The requirements to IBIS information-computation processes are specified and IBIS architecture is proposed. The model of the IBIS functioning environment, document and business-process models are presented.
OPTICAL ADD DROP MULTIPLEXERS (OADMS) IN UW-WDM Abd El-Naser A. Mohammed, Ahmed Nabih Zaki Rashed, Mahmoud M. A. Eid
Electronics and Electrical Communication Engineering Department In the present paper, we have been modeled numerically and parametrically the high and best performance functions of optical add drop multiplexers (OADMs) for ultra wide wavelength division multiplexing technique with ultra wide space division multiplexing technique in advanced optical communication networks and photonic networking over the assumed set of parameters. Moreover, we have analyzed and investigated the maximum time division multiplexing (MTDM) and soliton transmission techniques to be processed to handle bit rate either per link or per channel for cables of multi-links (20-120 links/core). Where maximum number of transmitted channels in the range of 1000-4800 channels are processed to handle the product of bit rate either per channel or per link for cables of multilinks of silica cable core fabrication material. The MTDM or soliton transmission bit rates either per link or per channel are also treated over wide range of the affecting parameters under the ambient temperature variations. Also, the performance characteristics of the OADMs are taken as the major interest in optical networks to handle maximum transmission bit rates for the supported subscribers.
ADAPTED ALGORITHM OF VIRTUAL PLANTS SIMULATION Hai Wang 1), Fei Hao 2)
1) Department of Computer Science, Wu Han University, Hubei, China 430072, e-mail: hkhaiwang@gmail.com In this paper, the concept and characteristics of fractal are briefly introduced; The drawing principle of L-system and IFS system is discussed. Based on this discussion, we analyse virtual plant growth procedure simulated by the L-system. Further, an efficient expression that can describe the plant growth and the control of direction is defined; Inspired from proposed expression, we propose a new method based on the combination of L-system and IFS system to simulate the plant morphology. We valid and show our proposed system with high fidelity and efficiency on the simulation of plant morphology by comparison experiments. Extra experiment shows it can be applied into computer art and video game scenario design.
IMPROVEMENT OF METROLOGY SOFTWARE TEST Nadiya Vasylkiv
Ternopil National Economic University, In this paper the improved metrology software test is described by simulation the growth process of thermocouple thermoelectric heterogeneity acquired in operation conditions. It’s aimed to create the possibilities for the metrological studies of the temperature measuring channel in the computer measurement and control systems as well as a correction of the error caused by the thermocouple thermoelectric heterogeneity.
AN EFFICIENT AND SECURED NON BLIND WATERMARKING SCHEME Nagaraj V. Dharwadkar, B.B. Amberker
Computer Science and Engineering, National Institute of Technology, Warangal, (AP), India In the early days, encryption and access control techniques are used to protect the ownership of image. Recently, the watermarking schemes are utilized to define the copyright of image. Digital watermarking is a concept of embedding a special security pattern into cover image. It has recently become important in various application areas of image processing. In this paper we present a new invisible, robust, non blind frequency domain watermarking scheme. This scheme embeds the monochrome (logo) watermark into the high and middle {HL, LH, HH} frequency bands of Arnold transformed luminance channel of the color image. The security of scheme is improved by scrambling the luminance channel of the color image using Arnold transform. In order to increase the detection speed and efficiency of algorithm, the location of modified high and middle frequency components are stored into key array. Use of this key array improves the speed of the extraction algorithm. The experimental results show that the watermark is robust against different types of attacks like image cropping, image filtering, image Compression, image blurring, and Image transformations. Further, the results of the proposed scheme are analyzed on the set of images. AN ANALYSIS OF IMAGES BEFORE COMPRESSION IN PNG FORMAT Alexander Shport'ko
Rivne State Humanitarian University, An influence of predictor’s different variants and their combination on PNG image compression is examined in this article. Fragments in C programming language for estimation of pixel lines entropy before and after application of context-dependent algorithm have been presented. A method for image analysis before the compression through breakdown of pixel lines with close entropy values into minimum blocks is offered. The method is based on the choice of an effective compression variant from five possible ones for every minimum block using dynamic programming and on the combination of contiguous minimum blocks in the homogeneous blocks of lines and on adjustment of their code parameters. It is experimentally showed that the images analysis, for example, allows to decrease the continuous tone images compression aspect of Kodak True Color PNG format image set on the average up to 12,37 bpp. |