In this paper, a short description of the original relational approach to intelligent data analysis is presented and the program system «Visual Discovery» implementing this approach with maximal ease for users is described. The main advantage of the system is visual constructor of data relations and operations being interpreted in the ontology of domain, and also hypotheses constructor being checked up on data.

The research results of reference signal delays influence in communication systems with correlation delay noise modulation on noise immunity of such systems in different modes are presented. Optimal delays are proposed for enabling minimal error rise while data transmission.

In this paper, the mathematical model of the total costs on improving the accuracy of manufacturing process and final inspection of products is determined. The proposed model enables to optimize requirements for process and production parameters by minimum costs criterion in case of the given reliability indexes of measuring production monitoring.

This paper explores the potential complexity of nanostructures (NS), which can be obtained under conditions of the organizing factors in case of NS synthesis «bottom – up» and destructive processes, determined by noises, fundamental and technological limitations. The values of the potential complexity of NS which can be obtained with limited sets of nanoelements (NE) in case of different parameters of organizing factors and noises are determined.

Recommendations on the choice of estimation method of the channel propagation transfer function on the pilot subcarriers are developed. Distance between the pilot subcarriers, which for typical propagation channel models will maintain a high data rate, is chosen. Estimation process of channel transfer function on the pilot subcarriers is simulated. Bit error rate for each of the suggested methods is estimated.

The analysis of current condition of routing in multiservice networks is carried out. New classification of routing methods in communication networks is developed. This classification allows to identify the set of variants of both sequential and parallel (multi-path) routing methods.

Polarization characteristics of turnstile emitters, amplitude patterns graphs directed to cross-shaped and cross polarization dipole's main components, dipoles with a reflector and dipole above conducting shield are presented. Efficiency of the basic polarization is calculated.

The aim of this research is to develop sources of secondary power supply 2000 volt using Zero Voltage Switch (ZVS). The paper consists of two parts describing various aspects of power supplies designing. The analysis of information materials and evaluation of critical parameters of some foreign power supplies are given in the first part of the paper. The second part describes technical realization of power supply options and possible uses of Zero Voltage Switch technology.

This paper is devoted to the pilot study of statistical techniques in cryptanalysis on the basis of block ciphers RC6, MARS, CAST-128, IDEA and Blowfish. The suggested gradient attack is based on statistical test attack called the «book stack». The described scheme and modifed attacks can significantly reduce the complexity of finding the secret key in comparison with previously known types of attacks. This paper studies the effectiveness of gradient statistical attack demonstrating its modern practical and theoretical application (9 rounds of RC6, 21 rounds of MARS and 4 rounds of CAST-128). Analytical dependence between effectively attacked rounds and time/hardware complexity is derived. In addition, in the case of RC6 and MARS, modifications significantly reducing space and operational complexity were developed. Also, this paper shows a selection method of optimum parameters of attack; operational and space complexity were investigated and their dependence on parameters and ciphertext size were shown. Theoretical demand for computing power needed to carry out the attack is described.

Results of scientific research on development of complex cadastral assessment bases of ground potential water resources in Altai Republic are considered in this article.