The problems of building the architecture and design of the database structure for the storage of the structure of the chemical compounds and their analysis using heuristic algorithms
Proposed the structure of the database that allows you to store information about the structure of chemical compounds with varying degrees of detail. This approach simplifies forming of the structural descriptors used to build models of "structure-property" based on the genetic algorithms.
Keywords: database architecture, chemicals, data mining, heuristics
Information base of textile textures and materials, with the detailed description of the software for work with base is considered. It is told about methods of creation of base of textile textures and materials and about opportunities of the represented project.
Keywords: informatsionnno base, textile industry, texture, materials, visualization, software, graphics
Modern CAD systems now allow automate most of the stages of design and technological preparation of production . But there is a number of routine procedures. This article is about the details classification operation analysys .
A review of existing solutions has shown that there are two ways to classify the details. The first - a “manual” characteristics of the classifier, assignment. This is the major method. The second is the expert system "Klassifikator" from the AsconCo., which is based only on the verbal description of the parts and the user selected one of parts from the existing. So that the function of user is to provide the recognition of images patterns. These methods of pattern recognition systems are successfully solve complex image recognition task . Analysis of methods of recognition led to the selection of the neural network method for classification of items.
We want you to use expert system consists of a Hamming neural network emulator and the semantic model of knowledge representation with direct output to solve the problem of classification of parts.
This combination of neuro-cybernetics and information approach to the creation of an expert system can either automatically determine a part characteristic by its image , or in a semi-automatic mode, prompting the missing information from user.
Keywords: expert system, pattern recognition, computer-aided design, neural network classification characteristic details.
This paper examines the effectiveness of the software framework developed by the authors for the task of sonar information systems software design. This is done by a theoretical estimate based on the data obtained during the actual production process, as well as practical by rebuilding the software using the skeleton. Fixed a set of indicators on which to judge the complexity and evaluated there . Finally, an assessment of the results of the experiment and draw conclusions about the direction of further research.
Keywords: software design, sonar information systems framework, performance evaluation
Production lines for manufacturing of cylindrical logs for wood construction are considered in the article. Technological factors influencing on efficiency of production lines are identified and classified. Results of research can be basis for improving production lines.
Keywords: Woodworking, cylindering, technological line, wood costraction, factors
The article provides information about the regions of the Russian Federation, where the technology of preparation flatted grains for animal feed intensively implemented. The main foreign and domestic producers of grain flattening machine are considered, and also the technical characteristics, advantages and disadvantages of technical means in the Russian market of agricultural equipment are analyzed. The review describes grain flattening machine of the original design to meet the needs of private farming.
Keywords: flattening, grain flattening machine, breast, private farming, feed nutrients
The article is concerned with designing online identification algorithm for identification plunger model for wicket gate of Kaplan turbine adaptive control system. Algorithm is based on generalised recurrent least square method and invariant embedding method. Computer modeling using designed algorithm and using real experimental data shows that algorithm is effective.
Keywords: adaptive control system, diagnostic system, Kaplan turbine wicket gate, plunger, linearized models, identification, recurrent least square
The mixed finite element method has advantages over classical formulations of Lagrange and Castigliano, and ensures high precision and smoothness approximate solutions for strains and stresses.
In practice, using the mixed finite element method is limited by high size of linear equation systems, which leads to significant increasing time costs.
Using the orthogonal finite functions for approximating of unknowns leads to generation of sparse linear systems with a special structure.
That system can be simplified during solution.
This article proposes the algorithm of modificated Gaussian elimination for preliminary transformation an extended matrix of linear system.
This algorithm underlies software complex, which includes LISTSOLVER, the author's solver.
Confirmed the efficiency of created solver in compare with common-type solver.
Keywords: mixed finite element method, sparse linear systems, orthogonal finite functions, Gaussian elimination
Considered the proposed approach to the allocation of resource flows. The approach developed on the basis of the method of bee colonies. Experimentally determined the dependence of the error of the algorithm of the problem dimension. Shows the dependence of the distribution of resources from a number of iterations, and the power of the swarm, and dynamics approximation of the distribution to the optimum.
Keywords: optimization, distribution, collective adaptation, evolution, the error of the algorithm
The paper discusses methods for the numerical simulation of the stress- strain state needed to evaluate the different boundary conditions of technical condition of long exploited surround impervious geotextile cover height adjustable fins . After a long period of operation of hydraulic structures continue to operate without routine repairs necessary to make the technical reconstruction of structures on the basis of innovation , as well as the previously proven technology of repair. The simulation result is characterized by the presence of non-hazardous for coverage of total movements , which shows the presence of a large margin of safety cover . It was also made modeling the formation of various defects, namely the most dangerous - subsidence of the underlying soil. Education deflection along the length of coverage shown in the orthographic total displacement of the drawdown of the subsoil . Was numerically simulated work covering the load of its own weight and volumetric filling the cells of soil under different parameters . One of the pressing problems at present in the field of security for a long time operated water conveyance structures is the correct assessment of the residual life .
Keywords: waterworks, water-conducting structures, numerical simulation, the stress-strain state
In this work the algorithm for compression and access to compressed voxel data in process of landscape modelling is proposed, which will significantly decrease memory requirements. This algorithm is designed to ease the development of vast voxel landscapes in computer simulations and games. The experimental studies has shown significant gain of voxel model memory efficiency. The aim of this algorithm is to be able to cooperate with surface extraction tools.
Keywords: compression, RLE, run-length encoding, voxel, landscape, virtual reality, operative memory, data
In this article, the author has rasmmotreny different approaches to the evaluation of competitiveness in terms of innovation.
Keywords: competitiveness, meso-level and micro-level, macro-level, the ranking of competitiveness advantages, quantitative and qualitative indicators
The research of algebraic cryptanalysis method was carried out in this work. Systems of the equations for tables of various sizes of nonlinear transformations of substitution for simplified model of GOST28147-89 algorithm are received, also we solve a one of this systems by a XL method. During this work we produced a program, which has realised a generation and solving of system of equations describing nonlinear transformations of substitution. We analysed a nonlinear systems of equations and calculated a value of complexity of XL method for eight blocks of substitution.
Keywords: Algebraic cryptanalysis, XL method, nonlinear transformations of substitution, linearization nonlinear systems, Gauss elimination method, a cryptographic key, GOST28147-89 encryption algorithm
With the use of pulsed laser deposition and carbothermal synthesis а photosensitive structure on the basis of the Schottky barrier Au/ZnO(nanorods)/ZnO(film)/ZnO(nanorods)/Au was obtained. The parameters of the carbothermal method of synthesis of nanorods ZnO were optimized. Under directly applied bias of 7V current sensitivity of luminous flux for this photodetector is observed in the UV and visible regions of the spectrum, and is 0.14 A/W - for 325 nm and 0.18 A/W - to 405 nm, which means that this structure has the ability of potential applications in various fields for the control of UV radiation (for example, for the monitoring of solar UV radiation, control of UV radiation in air and disinfecting water devices).
Keywords: ZnO nanorods, Schottky barrier, photodetector, photosensitivity
ZnO nanorod arrays have been synthesized on silicon wafers by chemical vapor deposition (CVD) technique with different temperature modes, without metal catalyst. With this method vertically aligned ZnO nanostructures were grown at the quite low temperatures. Modification of the method allowed to place silicon substrates in areas with different ratios of concentrations of the molecules in the vapor phase. Photoluminescence spectroscopy and electron microscopy studies have shown that morphologies and optical properties of nanorods depends on different ratios of concentrations of the molecules in the vapor phase.
Keywords: ZnO nanorods,chemical vapor deposition (CVD), photoluminescence