This paper presents a comparative analysis of the effectiveness of the method Cuthill-McKee algorithm and fill-reducing ordering of a sparse matrix, based on multi-level nested dissection paradigm, developed at the Department of "Computer Science and Engineering," University of Minnesota. For short, we shall call the algorithm Cuthill-McKee CM, and the algorithm of the University of Minnesota — NodeND (Node nested dissection). This article uses a modification of the CM algorithm — RCM (reverse Cuthill-McKee), because in practice the reverse numbering index allows you to get a greater advantage than using a direct algorithm CM. The reason for using these algorithms are high speed computational algorithm, as it is necessary to solve the system proximal to the diagonal, the great acceleration of algorithms for solving FE problems using technology such as CUDA
Keywords: finite element mesh renumbering methods, three-dimensional mathematical modeling, elasticity theory problems, finite element method, finite element meshes
In article mathematical formalization of concept of a lag effect of system as a whole, and in particular a lag effect of the social and economic system arising at studying of processes and the phenomena of a labor market is considered.This property allows to consider a problem of a temporary gap between operating impact and result of change of system of a labor market on this influence.
Keywords: Labor market, lap effect, optimizing tasks, economic-mathematical modeling,operating influence, social and economic system
Only innovative activity is able to unite all aspects of science, equipment, economy, business and management. The current state of the innovative sphere of Russia speaks about serious contradictions in its functioning. Considerable scientific and technical capacity of the country was lost in the period of economic reforms. Now often it is impossible to predict precisely succession of events in economic life of the country generally and each organization separately. In modern conditions scientific and technical progress represents innovative development which is defined by the state as the most important priority of economic policy. Innovative potential of any managing subject needs to be estimated as difficult social and institutional system. To encourage managers and the production personnel competently developed motivational strategy is necessary to conduct work on search of innovations. Achievement of the put indicators of innovative development of the Rostov region and the country as a whole has to become result of an offered method of interaction of science, business and authorities.
Keywords: innovative activity, scientific and technical potential, economy, business, ideas, effect, development
Cylindering logs are increasingly being applied for construction of houses. Log production are expensive to and is costly application equipment. The article describes the technical and technological solutions allowing to get round the log on the cutting area and at lower cost.
Keywords: cylindering, through technologies, forestry, functional technological analysis
The stated task is development of planning system of energy-efficient trajectories for stratospheric airship. Different intellectual approaches for this task were analyzed. Genetic algorithms were chosen. Results of application of genetic algorithms were considered.
Keywords: MAAT, high-altitude airship, control system, planning, genetic algorithm
We consider the relevance, peculiarities and the main stages of composite developments in the technology of production of finishing materials based on glass and ceramics. The description of technology of production of universal fragments, making the block-transformer. As basic materials for the development of applied chamotte ceramics and glass sheet.
Keywords: composite development, design, manufacturing technology, unit transformer, fireclay, glass
The article discusses issues related to the strength of the normal sections of reinforced concrete beams in which the steel reinforcement is completely or partially replaced by a carbon fiber rod arranged in two rows. Found that the strength of these beams is only 13% higher than that of the reference.
Keywords: concrete, steel, composite reinforcing, test samples, strength, failure modes, load level
The article consider the problem of managing the operational reliability of thermal energy complex enterprises. To improve the efficiency of the organization of repair and reconstruction work will form the organizational and technical building systems. Simulation of complex organizational and technical building systems allows to find effective organizational and technical solutions, as well as to predict their possible development in a variety of situations, the probabilistic nature.
Keywords: operational reliability, organizational and technical building systems, modeling.
The article represents the description of the construction of increment borer, its present modifications and additional devices. On the basis of the conducted survey the authors of the article defined the ways for improvement of the borer. Suggested technical solutions are at the stage of patenting
Keywords: Increment borer, preparatory works of forest logging, tree age, forest inventory, core.
Alzheimer's disease is an incurable illness. It affects about half a million people in Russia, and due to the general trend towards aging of the population the number of Alzheimer's disease cases will steadily increase. Insoluble deposits of amyloid beta in the brain tissue (amyloid plaques) are the major morphological characteristic of Alzheimer's disease. It has been found that the increased concentration of copper in amyloid plaques results in copper ions bound to the protein. It is the presence of copper in the binding site triggers of the formation of amyloid plaques. Therefore, the study of the binding site in amyloid beta is of great scientific interest. The local atomic structure of the Cu(I) copper ion binding site in the amyloid beta peptide has been studied by means of XANES spectroscopy. Several model structures obtained by molecular mechanics and density functional theory (ADF code) have been tested. Theoretical analysis of X-ray absorption spectra based on the finite difference method implemented in FDMNES code was performed. An appropriate model structure of the Cu(I) copper ion binding site in amyloid beta peptide has been found.
Keywords: amyloid beta, binding site, Alzheimer's disease, the method of finite differences, Cu(I)
This paper describes an in-situ experimental technique to study of ceria nanocatalysts by using X-ray absorption near edge spectroscopy XANES. This technique allows us to determine Ce3+ concentration inside ceria nanoparticles in the course of catalytic reaction based on the comparison and divergence minimization of the Ce L3 XANES spectrum of the ceria nanoparticles under catalysts (atmosphere, temperature) with a linear combination of two independent components corresponding to spectra of Ce4+ ion of the CeO2 structure and Ce3+ ion of the theoretical Ce2O3 structure. The calculated weight ratio determines the Ce3 + concentration in the sample during the catalytic reactions.
Keywords: in-situ X-ray absorption spectroscopy, HERFD, XAS, ceria nanoparticles, Ce-based catalysts, Ce3+ concentration
The problem of manufacturing technology heterostructures pezofaza - metal considered in the article. Complexity consists in the fact that during the removal of the polymer in the system at low temperatures are formed porous layers, formed powders separated metal layers, having island macrostructure. One way to solve the problem - reducing the firing temperature heterostructures. Proposed to decrease the sintering temperature by using of functionally active glass-phases. Reducing the sintering temperature of products also allows to replace platinum electrodes inexpensive silver-based alloys. Obtained by solid state reaction method of piezoceramic material has a low sintering temperature (980 ° C) and high electrical parameters. Found that not only the proportion of the vitreous mass, but also their qualitative influence on the properties of piezomaterials
Keywords: heterostructure glass phase, the sintering temperature, porosity, ferroelectric phase
In this paper, the synthesis of a trajectory regulator for a mini-helicopter are described. We propose a method to hardware-in-the-loop simulation using simulator AerosimRC. The simulation results are showed. The tasks for the application of the method are pointed.
Keywords: position-trajectory regulator, helicopter, mathematical modeling, simulation, algorithms.
The technique of the geometrical analysis and the analysis of force loading of combined drills with the replaceable multiface plates is offered in this work. This technique is allowing to determine geometrical parameters and specific force loadings in each point of a plate’s cutting edge taking into account its orientation in the drill case. Application of this technique allowed to establish the reasons of the drill’s low durability. The offered technique allows to design drills from the minimum unbalanced radial component of cutting force which increases its working capacity and the processed holes quality. New designs of combined drills both with two, and with three replaceable multiface plates are offered in this work. The durability of this new drills is increased by the plates mutual turn for the minimization of an unbalanced radial component of cutting force
Keywords: combined drill, replaceable multiface plate, drilling, design, equilibration, geometrical analysis, the analysis of power loading
Personnel motivation strategy is a part of a strategy of the whole company. It is long-term plan of particular actions, which has an aim to develop personnel’s potential to the full extent. As an impact, this allows the company to have a competitive advantage in strategy.
There are a few main approaches to strategy development and, as a consequence, a few options of personnel motivation strategy.
When it comes to development of personnel motivation strategy, there are several stages that shall be competed, as follows: diagnostics of current personnel motivation strategy; development of main strategies, aims and principles of company’s motivation policy, as well as its content and structure; development of employees’ material monetary and noncash remuneration, and non-financial reward; development of internal white papers in order to establish personnel motivation strategy; implementation and effect monitoring of established personnel motivation strategy.
Keywords: personnel motivation, motivation strategy, material remuneration, non-financial remuneration, effectiveness of personnel motivation.