This paper presents mathematic model of optimization of expenses of stock-piling of timber and logging timber from felling areas to timber consumers by transport networks. This model optimize technological processes which appears during the process of stock-piling of timber and logging timber.
Keywords: log truck, rail transportation in timber processing complex.
The main laws valid for a series of traffic jams relating to a series of intersections are considered. Their usage facilitates optimization of simulated models of a traffic network section. The problems of traffic jams emergence on the I thoroughfare of Volgograd are investigated with the help of simulated modeling.
Keywords: simulated modeling, series of traffic jams, traffic flows, genetic algorithm, traffic capacity
Nonstoichiometric tungsten oxides WO3–x and oxide alkaline tungsten bronzes have been studied because of their potential applications in electrochromic devices such as solar panel arrays and “smart windows”. Different phases of
WO3–x have been considered. In this part we present results of our research which clearly show that all Magneli phases of tungsten oxides WOx (namely W40O118, W20O58, W5O14, W18O49, W8O23, W3O8) and oxide tungsten bronzes MxMyWO3 at M-Li, Na, K, Rb, Cs. They are characterized by metal – like properties. Their band structures display an energy gap in the valence band just below the Fermi level.
We present results of our electrochemical synthesis of tungsten oxide bronzes in ionic melts of the polytungsten salts. Among the new state – of – the art methods for their manufacture, electrochemical synthesis in ionic melts, which makes considerably better use of existing technologies, is highly productive, based on the discharge of oxyanions of the polytungstates.
Keywords: oxide alkali bronzes, alkaline tungsten bronzes, tungsten, molybdenum, nonstoichiometry, tungsten oxides, electroconductivity, electrochromism
The paper describes the development and research of MEMS sensors error model using experimental data approximation of fourth degree polynomial with coefficients computed by least square method and written using of graphical programming language LabVIEW
Keywords: Navigation, MEMS sensors, error model.
Patent search has been accomplished and guidelines of patenting of stamp-welded wedge valves’ frames for shut-off valves for the plants of > nuclear power, thermal power, oil and gas industries and for main piping are given.
Keywords: nuclear power plants, valve industry, pipeline valve, shut-off valve, wedge valve, main piping
In article the material about use of interactive training programs in educational process of the students training difficult household appliances is prepared.
Within transition of the higher educational school to provisions of Bologna Process by a leading method of pedagogical work there is a competence-based approach to formation of steady knowledge and practical skills at students [1]. Indispensable condition thus is compliance of quality of training and the general education standard. As especially important requirement continuous control of assimilation of educational information and ability of its application serves in practical activities. The most well-tried remedy of total control of assimilation of educational information is carrying out daily testing, including remote. Use of test interactive programs becomes more actual at integration of groups and increase of an academic load on the teacher [2].
Keywords: criterion of efficiency, intensity of thermal streams, refrigeration machine, inflow and selection of heat, vaporizer
The problem of justifying extending the service life of hydraulic structures in Russia is unsatisfactory condition requiring modernization and refurbishment. Currently in Russia over the length of the river network of 2.37 million sq km includes more than 125 thousand rivers that can be used for navigation. When locking, the most widely found as regulator control structures of low pressure shield dam spillways with metal swivel farms most widely used when evaluating the residual life of structural elements carrying water conveyance structures, has an integrated risk assessment of the accident. According to the distribution curves can be classified technical condition of each item, such as rods and plates in various defects as small and dangerous damage the elements included in the design. During the simulation obtained contour plots of stress-bearing low-pressure water-lifting precast shield dams for subsequent prediction justify continued reliable exploitation. The concept of life extension studies supporting structures prefabricated low-pressure water-lifting shield dams on the example of individual structures bearing elements, prefabricated low-pressure water-lifting shield dams, based on modeling of the loading process from various defects and damage due to prolonged use.
Keywords: water-conducting structures, prefabricated pumping low-pressure-mounted dam, modeling, technical condition, residual life.
The paper presents and analyzes the main methods of material stimulation of engineers and technician staff on russian and partly foreign enterprises, taking into account national management models. The article highlights the indicators that affect the stimulating part of remuneration for different occasions.
Keywords: engineering and technical personnel, remuneration, the stimulating part of remuneration, performance labor.
A stability problem of milling process is under consideration. A novel analytical tool is presented to assess the optimal cutting parameters which provide a chatter free machining. Chatter instability is broadly studied in the literature. However, the problem of simultaneous optimization of radial and axial depths of cut is kept out of scope. To describe the optimization method a single-degree-of-freedom model of milling process is investigated as well as corresponding equation of motion and function of cutting force. A unified delay-differential equation is proposed. A theorem of asymptotic stability is suggested. Suggested optimization technique allows to create a diagram of radial and axial depth-of-cut dependence. As shown, there exists an extremum of function of axial and radial depth-of-cut dependence.
Keywords: chatter, stability, delay-differential equation, oscilations, self-excited vibrations, optimization
Peculiarities mechanisms predict and evaluate the results of actions of an intelligent agent. Building and planning procedures and correction strategy and tactics based on the behavior of a cybernetic circuit functional systems. This scheme is a concept of an intelligent agent architecture.
Keywords: Intelligent agent, adaptive behavior, the model achieve the goal, the efferent mechanism synthesis
The properties of the water-soluble high-modulus silicate systems: based on alkali metal polysilicates called liquid glass and chain their transformation from lower to higher oligomers, with the subsequent formation of colloidal solutions - silica sol. The methods of preparation, properties and applications of water-soluble high-modulus silicate systems. The possibilities of their use as a binder and modifying agents for various nanostructured composite materials. The examples of promising areas of application of liquid glass and high modulus of aqueous solutions of silicates in construction and industry. In particular show the possibility of using liquid glass and aqueous solutions of silicates in the production of nanostructured silicate polymer. In space engineering for manufacturing water-destructed mandrels used in the manufacture of solid rocket motor casings and pressure vessels 'cocoon' of composite materials by winding. The application of the inorganic sol to obtain a nanocomposite ceramics and monolithic blocks of silicon oxide, which can be used in various fields of modern technology. The possibility of using silica sol as a binder for refractory ultra-lightweight shielding materials used to protect equipment from high impacts. The directions of development of the production of new acid-resistant materials and linings for protection of chemical equipment, parts and components operating in corrosive environments.
Keywords: Keywords: water glass, silicate polymer concrete, additives, silicates organic bases tetrafurfuriloksisilan, furfural alcohol, nanostructure composite materials, water-soluble silicates, silica sol, sol-gel transition, cured xerogel water-destructed mandr
The paper contains a description of a new method for automatic generation of maps of goods placement. Map of goods placement created by the author's search algorithm. The algorithm is based on ideas of evolutionary search. The proposed algorithm works with a population of constant size, allows not use complex search methods and for a reasonable time find a solution close to the optimum.
Keywords: simulation, evolutionary computation, multicriteria optimization, genetic algorithms
Based on the analysis of works of finnish experts shows that learning russian language with learning the finnish language as a foreign supports the development of bilingual identity and language readiness of students.
Keywords: russian, finnish, teaching.
In article it is constructed трехзвенная model of participants of branch system of an estimation and certification of the qualifications, including the branch base organisation, the ekspertno-methodical centre and set of the centres of an estimation and certification of qualifications. The role of the base organisation in the given system is shown. Character of interaction of the branch base organisation with the basic participants of system of an estimation and certification of qualifications at level отрасле is defined. The basic functions of the branch base organisation are allocated and the order of its functioning is defined. The interrelation of the branch base organisation with participants of national system of an estimation and certification of the qualifications, presented by the Socially-state council and the base organisation - National agency of development of qualifications is shown.
Keywords: Management of process of support of raw materials of the enterprises, macrologistical system, functional structurization, objective structurization, competitiveness factors.
Currently, more than 80% of water conveyance structures worked much the normative life. At the same time there is a simultaneous increase in the load on the aging waterworks, in the absence of the necessary skilled personnel and technical repair base will inevitably lead to an increase in the number of accidents due to operational reasons. Identification of factors that influence the condition of the facilities at the intersections , the search for methods of calculation and control of non-destructive methods to evaluate their work , life extension , etc. is of paramount importance at this stage. Residual life for the safe operation of water conveyance structures determined on the basis of system analysis with the development of the block diagram of a dynamic system having a number of subsystems. The main property that determines the life of the system , is the reliability of its elements , ie reliability and trouble-free operation for a certain period of operation. Dependability and reliability of the system as a whole is determined by the condition that each element of the system can be in one of two states - serviceable or failure.
Keywords: water-conducting structures, low head hydro closed spillways, modeling, technical condition, residual life.