Vol 11, No 3 (2013)

The article presents a new method of threshold secret sharing, which is based on a residue number system. The developed method is resistant to internal attacks, provides a relatively low cost hardware implementation.

The task of designing the pulse, that satisfies the FCC spectral mask on radiation level for ultra wideband communication systems, is considered in the article. The results of applying the genetic algorithm for weight and shape factors optimization of the pulse based on Rayleigh derivatives are presented.

In this article the homogeneous model of distributed call center. Optimal operation of the center is to provide the lowest possible average waiting time of calls in queue, which requires all incoming redistribute the load among various service centers that are part of the distributed call centers. A method for the distribution of arriving at the call center load to minimize the average waiting time of service calls in a distributed call center. Is an example of load distribution for 4-node homogeneous distribution of the call center.

The problem of detection malware that use NVIDIA graphic processing units and CUDA technology is considered. The signature-based method was used to solve the problem of mal-ware detection in the files. We designed and developed software that implements this method of malware detection. We also demonstrated its applicability to detection malware that use graphic processing units in their work.

The given article concerns analysis of such actual business process, as management of goods promotion in the e-marketplaces. Important feature is possibility of forecasting of results of the process that is a great value for management of distribution of active investments into Internet advertizing.

The method of analysis of systolic potential dynamics and heart rate coupling developed using serial ECG registrations of healthy young people and based on structural-statistic approach of signal investigation. According to the results of created parametrical coupling diagrams the classification of amplitude-phase coupling modes depending on direction and level.

This paper describes a way how to compress digital video stream on the television communication channel with the help of exploring psychophysical features of human vision. It leads to achieving better results of the visual quality of the picture than standard MPEG-2 has. The fields are supposed to be divided into groups. There are 3 types of the fields: an O-field, which performs as a bearing; an N-even field, encoded by prediction based on the previous field within one frame, M-odd fields, encoded with the prediction based on the previous odd field from another frame. To improve the visual quality of the picture odd and even fields are interchanged during the whole video sequence or a frame group. It results in frames with better high-definition, and the visual quality of the picture becomes much higher.

Review trends and prospects development of IPTV systems. Describes technology of scalable video coding standards H.264/SVC. Developed algorithms analysis and synthesis of video quality for IPTV system with dynamic adaptation streaming. Shows the effectiveness of adaptation video to the characteristics of communication channels.

He paper presents the results of an experimental study of the levels of electromagnetic fields (EMF) in a high-rise office building. Random aperture antennas (RAA) are a model of holes in the walls of the building. Distributed random antenna (DRA) is a model of the metal elements of the building. It is shown that the RAA have a major impact on the levels of EMF in the frequency range 60-700 MHz. Levels of electromagnetic fields have more complicated dependence on the parameters of RAA and DRA together at lower frequencies.

The article is dedicated to the probability assessment of various multimedia containers detection in telecommunications networks during space-time information diffusion.