Mathematical models describing the process of group wood barking in the barking drums are suggested.

Keywords: group barking, mathematical model, barking drum

It is proposed software-technological complex for modeling, which uses L-systems (Lindenmayer Systems) as the tools of modeling and visualization. The main purpose is to construct models of processes and structures that have a fractal nature. The complex supports different types of L-systems: deterministic context-free L-systems, stochastic L-systems, parametric L-systems, context sensitive L-systems. The developed tools have been used to model and analyze the socio-economic processes.

Keywords: L-systems, modeling, Fractal, Self-similar structures, Production rules, Grammar, Graphic interpretation

  Work results of technical decisions concerning improvement of damping devices for large-size containers in order to protect their contents from damage research are provided.

Keywords: container, damping device, shipping package

Formulating the basic calculating method for reinforced concrete structures based on common physical signs. There are prerequisites for the developed method.

Keywords: reinforced concrete pillar, the method of calculation, stress, Chart Options.

  In this paper for the solution of the transformation "voltage-to-pulse" is proposed implemented in CMOS basis (technical process SGB25VD) structure based on high-frequency converter and comparator multiplexer with symmetrical hysteresis. Increasing the accuracy of the transformation achieved by the proposed method switching input voltages, excluding the through-analog switches. The results of computer simulation confirmed the effectiveness of the developed structure. Practical implementation of an analog-to-digital converter has shown that the proposed method of construction reduces the technological requirements for the components of the system-on-chip and increase its productivity.

Keywords: system-on-chip, analog-to-digital converter, structure, multiplexer, switching, measurement error, comparator, integrator

"The results of the computational experiment, Show, that the dependence of the relatively carrying capacity on the relatively eccentricity is almost independent on the reinforcement Ratio or on and concrete type. "

Keywords: High- Strong concrete, self-compacting concrete, modulus of elasticity, column.

Knowledge of the kinetics heat irradiation give more sources for understanding physico-chemical process connected with solidification astringent. On curves of heat irradiation you can traced three stage and then read the kinetic equations describing each of them.

Keywords: kinetics, heat irradiation, speed, stages, astringent

  The approximate formulas for determination of planar electromechanical force factor and piezomodule in the disk-form samples without Poisson coefficient evaluation of the smallest (first) frequency equation root are derived. It simplifies procedure of measurements because measurement of frequency of the first overtone isn't required.

Keywords: piezomaterial, disk, planar electromechanical force factor, piezomodule, Poisson coefficient

In article the technique of optimization of placement of waste reloading stations, allowing to define both location, and number of stations that allows to reduce both operational and capital expenditure for the organization and functioning of system of the address with a waste is offered.

Keywords: technological process of transportation, a solid municipal waste, critical distance

This paper presents a method for calculating the spread for the generalized (B, S)-market in case of buying up shares. A brief description of the relevance of tasks, related to the calculation of market value of derivative of assets and concomitant calculations. Substantiate the use of Martingale ideology in studies of financial markets. Describes the essence of the generalized model (B, S)-market in case of buying up shares, as well as the principle of calculating of upper and lower value of the option-call European type.

Keywords: financial market, option, spread, model completeness, arbitration, financial strategy, the model of Cox-Ross-Rubinstein, financial liability, the martingale

  The short review of patents for designs of transport and packing sets for transportation and storage of the fulfilled nuclear fuel, developed in Petrozavodsk the state university is given.

Keywords: nuclear fuel, container, storage.

Recently (on March 26-27 of this year) there passed the international NanoIsrael-2012 conference which showed considerable successes of the world community as in basic researches in the sphere of nanotechnologies, and in creation of real innovative productions in this area of the industry. One of the main sponsors of conference was also RUSNANO which presented information on nanoindustry development in Russia. The review of the western nanotechnologies presented at conference is provided in article.

Keywords: nanotechnologies, the Israeli companies in the field of the nanotechnologies, the nanostructured polyurethanes, technology of nanoreinforcing, a nanowire, nanostructure

Consider the problem the interaction of conical punch with soil base. A scheme of partition the study area into finite elements, The formulation problem, boundary conditions, allowing the equation. Presents some results the calculations.

Keywords: conical punch, foundation, base, axisymmetric problem, stress, displacement.

  Requirements for methods of diagnosing design increases - they should make it possible to fully assess the performance of buildings, as well as being simple and mobile, to be used during the construction, operation, maintenance and reconstruction. This work is devoted to the realization of experimental and theoretical methods for vibration monitoring of structures and the analysis of the results. The objects of study are the reinforced concrete beams and slabs, and the subject of the study - the methods of vibration diagnostics, the principle of which is to detect changes in the construction of the main dynamic characteristics. Research has shown that damage to the structure can be detected by the methods considered, using a relatively small number of monitoring points and subject to change only the fundamental mode of vibration.

Keywords: Vibrodiagnostics, flaw detection, diagnostics, construction, beam, plate, defect, damage, vibration

  Article contains researches of functional and spatial features of foot spaces, the nomenclature of the most widespread obstacles in sidewalks of Rostov, the assessment of their influence on traffic conditions of pedestrians, groups of actions for improvement of a condition, arrangement and functioning of foot spaces are stated.

Keywords: traffic engineering, pedestrian space, level of pedestrian service