В статье рассмотрен способ повышения теплозащитных качеств ограждающей конструкции (наружной стены из кирпичной кладки толщиной 380 мм) жилого дома типовой серии, расположенного в г.о. Нальчик, по ул. Карашаева, 13. Представлен теплотехнический расчет ограждающей конструкции. Графическим способом определено распределение температур в толще ограждающей конструкции существующего здания, а также предложенного варианта с применением плит эффективного утеплителя ROCKWOOL для системы ФАСАД БАТТС.

Keywords: ROCKWOOL, эффективный утеплитель, жилой дом, ограждающая конструкция, теплозащита.

Coding of information using of pseudo-random sequences  in quantum communication systems providing an operation with a low probability of single-photons detection is proposed. The results of statistical modeling of information extraction from the bit stream, received at different specified probability of detection based on the correlation properties of the M-sequences are demonstrated. It's demonstrated that the peak value of cross-correlation function for the M-sequence of 255 bits is on the average more than 2 times higher  than the level of side lobes at the probability of single-photons detection 20%.

Keywords: quantum communications, single-photon detector, maximum length sequence

The paper considers the comparison of power consumption of Two’s Complement System and Residue Number System for digital signal processing applications. The comparison of these two implementations allows to conclude that, for these applications, the RNS uses less power than the TCS counterpart. The aim of the present paper is to highlight the reasons of this power consumption reduction.

Keywords: residue number system, digital signal processing

The article is about generators of random numbers (GPN) constructed on points of an elliptic curve and algorithms of development irreducible polynomials over prime fields. It describes their advantages and main features. The authors analyzes the algorithm of development GPN constructed on points of an elliptic curve with using irreducible polynomials of degree three over finite fields. In this approach, calculations were made in the system of residual classes. According to the results of computer simulation shows the advantages of algorithm in speed and security of a cryptosystem.

Keywords: the generator of pseudo-random numbers, elliptic curve, system of residual classes, cryptographic security, irreducible polynomials

Information about authors of issue №4 p.2 (2012)

Keywords: authors