S.V. Mishchenko, S.V. Ponomarev, A.G. Divin, G.V. Mozgova, S.V. Khodilin
Department «Automated Systems and Devices», TSTU
Key words and phrases: thermal conductivity; thermal diffusivity; shift velocity; thermal physical measurements.
management principles; quality management system.
Abstract: Physical and mathematical models of the method and device for determining thermal physical properties of liquid polymer materials under shift flow are developed. The design of measuring device and measuring method are proposed.
Key words and phrases: integral Fourier equation; non-destructive control over properties; heat-insulating materials;
heat measuring cell.
Abstract: Theoretical grounds of the method of measuring heat conductivity of heat-insulating materials are considered. The design of heat measuring cell is described. The results of the research are submitted.
Key words and phrases: heat conductivity measurement; device for measuring heat conductivity; ways of measuring heat conductivity; heat conductivity of solid materials.
Abstract: Heat conductivity of solid materials of the KB “Teplofon” system are described; their working principle is based on integral non-stationary method of measuring heat conductivity of metals, cermet, items for nanotechnology, composite, building and other materials in the range from 0,1 to 400 W/(m×K).
Key words and phrases: meta-decision; multi-problem; optimum control over innovation project; a flow of problems;
Abstract: Three classes of tasks for decision-making in management are introduced. The tasks of the first class are associated with making decision on a single problem, the second class – a group of problems and the third class – a flow of problems. The peculiarities of solving tasks of different classes are considered.
Key words and phrases: algorithms of synthesis of energy-saving control; virtual indicator; energy expenses; thermo-physical properties; electrical furnaces; energy-saving control.
Abstract: The tasks of control over electro-chamber furnaces using virtual indicator which takes into account thermo-physical properties of the object are considered. The synthesis algorithms of optimum control providing the required accuracy in different working modes of the furnace are proposed.
Key words and phrases: polymer composites; process of curing; binder; thermo-physical, kinetic and rheological
Abstract: The method of experimental determination of binder flow parameters in the cure of items made of polymer composite materials is proposed. The technique of vacuum autoclave moulding and hot pressing of thermo-reactive binders is used. The method is based on measuring the reduction of sample thickness due to binder outflow under working pressure.
Key words and phrases: multi-layer building structures; non-destructive control of properties; thermal physical characteristics.
Abstract: Method of operative non-destructive control of thermal physical properties of multi-layer (three-layer) building structures is developed. It enables to determine basic thermal physical characteristics of external walls with the required accuracy.
Key words and phrases: thermal conductivity; thermal diffusivity; mathematical modeling; non-destructive control
over properties; polymer materials; structural transformations; thermal physical characteristics.
Abstract: Method of thermal physical non-destructive control over temperature and time characteristics of structural transformations (phase; relaxation) in polymer materials is developed. The method is based on analytical solutions of a number of mathematical models of heat transfer processes in the examined body for working parts of several thermograms, fixed both at the stage of heating and cooling. Application of the method is shown in examination of solid phase polymer transformations in ïîëèòåòðàôòîðýòèëåí and carbonized ïîëèòåòðàôòîðýòèëåí.
Key words and phrases: heterogeneous stingy liquid substances; physical mechanical properties; production operational control; rotation method; measuring element of plate type.
Abstract: heterogeneous stingy liquid substances; physical mechanical properties; production operational control; rotation method; measuring element of plate type.
Key words and phrases: viscosity control; pneumatic non-contact method; electro-pneumatic generator.
Abstract: Description of new non-contact aerodynamic method of viscosity control is given. The essence of the method is that the surface of controlled liquid is influenced by periodical sequence of pneumatic impulses with variable frequency. The frequency variation keeps on until the amplitude of oscillations of liquid surface reaches the point of contact with the stream of given value. The design of electro-pneumatic generator forming periodical sequence of pneumatic impulses is proposed.
Key words and phrases: gas phase concentration; stream-acoustic control; particulate material.
Abstract: The results of theoretical and experimental research of interaction between stream-acoustic signal and particulate material are given. The method of control over gas phase concentration in granular material layer by stream acoustic substitution is proposed. The device intended to control concentration of gas phase in the particulate material layer is developed. Its design and working mechanism are described.
Key words and phrases: gas diffusion; gas convection; multi-component diffusion; unstable diffusion process.
Abstract: Solution to the task of mixing process stability in triple gaseous mixture for vertical cylinder of finite height (diffusion canal) is given. The comparison of Relay’s numbers calculated in linear approximation with regard for concentration gradient is indicated. Theoretical results were compared with experimental data obtained in two-flask apparatus with cylinder diffusion canal for the system 0,3He + 0,7Ar – N2 (concentrations are in molar fractions).
Key words and phrases: automatic scale; weighing in turbulent flow.
Abstract: The experience of development, designing and maintenance of the systems for mass registration in highly disturbed air flows on the basis of quadrant scale and proportionally differential regulator is stated.
Key words and phrases: waveguides of surface waves; dielectric penetrability; slow down coefficient; magnetic penetrability; surface wave; bellows waveguides.
Abstract: Classification of waveguides of surface waves and their combinations as original measuring converters of electric and thermal physical properties in terms of their regularity is considered. Some functional schemes and structures are described.
Key words and phrases: swelling coatings; multi-wall carbon nano-pipes; tubulens.
Abstract: The effect of small additives (up to 5 % ) of carbon metal-containing nano-structures on thermal physical properties of formed carbon foams (foam cokes) as well as the process of swelling modified epoxy composites is studied. The additives are obtained through carbonization of homogeneous gels, containing PVS and copper chloride (II), nickel (II) and cobalt (II) and product of phenanthrene dehydropolycondensation.
Key words and phrases: high temperature exchange; hydraulic resistance of pipe.
Abstract: Numerical method of calculation of characteristics of heat exchange and hydraulic resistance of turbulent gas flows in the pipe in terms of high non-isothermity is proposed. The comparison of calculation with experimental data is given.
Key words and phrases: convective drying; conductive drying; migration of dissolved substances; volume pseudo-boiling; surface evaporation; proving experiments; investigating experiments; temperature plateaus; thermo-physical measurements; transfer phenomena.
Abstract: Methods, techniques and complex methodology of research into drying of wet materials with correlated drying and heating time are given. Analysis and description of the processes are carried out on the basis of temperature and moisture dependencies of drying and heating materials and temperature plateaus. The classification of experiments variety is given. The examples of experimental sets and obtained results are stated. The efficiency of the suggested methodology recommended in scientific research and engineering design is shown.
Key words and phrases: deep drying; convective diffusion; diffusion coefficients; mathematical models; particles heterogeneity; longitudinal dispersion; drying rate.
Abstract: Possibilities of mathematical modeling under quality control of drying products are analyzed. Up-to-date state of the problem of mass and heat transfer under drying of disperse materials is considered. Specific kinetic models are given.
Key words and phrases: grain driers; transportable and stationary driers; energy consumption; drying chamber.
Abstract: Analytical review of design and features of grain driers produced in Russia and abroad is given. Perspectives of their development are considered.
Key words and phrases: dehydrated feed production; intensification of water yielding capacity; resource- and energy-saving techniques; electrical processing of vegetation materials; electrical plasmoliz.
Abstract: Energy-saving techniques for production of dehydrated feed are given; main condition of efficient control over the process of its dehydration is formulated. The advantages of electroplasmoliz as the method of intensification of water yielding capacity of green herbs are stated. The problem of efficiency evaluation of destruction of biological forms of connection between moisture and material while preparing herbs for dehydration is grounded. The need for development of measuring devices for control over efficient destruction of biological forms of connection between moisture and material in technological flows is shown.
Key words and phrases: abrasive tool; zone method; impregnation; convection drying; co-polymer; effective diffusion coefficient.
Abstract: The results of experimental research of moisture diffusion in impregnated abrasive tools are presented. Method of kinetic calculation of convection drying of impregnated abrasive wheel and effective solution of industrial drying apparatus are developed.
Key words and phrases: durability; fiber board; life cycle; physical and empirical constants; thermal resistance.
Abstract: Regularities of fiber boards destruction of various density are revealed. Equations describing them enable to calculate basic maintenance parameters (durability; life cycle; thermal resistance) in a wide set of stress, temperature and operational time.
Key words and phrases: crucial factors of success; mission; vision; policy in the area of quality; parameters of performance; quality control system; strategic plans; objectives.
Abstract: The main stages and the range of activities required in the development of strategic management, in particular, mission, vision and policy in the area of quality as well as objectives and strategic plans both for the company as a whole and its departments when introducing and preparing the quality control system for certification in conformity with the international standard ISO 9001:2000 are considered.
Key words and phrases: measurement; process; system; measurement process elements; error sources; decision-making for quality control.
Abstract: Peculiarities of measurement processes compared with standard management processes and quality management are discussed. The information about the most important elements of typical measurement process is given. Basic terms used in the error estimation of measurement systems are considered. The recommendations on improvement of measurement processes enabling to decrease the possibility of wrong decision in the course of quality control over products and/or services are given.
Key words and phrases: statistical quality control; statistical process control; range; standard deviation; adjustment factors; «correction» factors.
Abstract: The so-called range has been widely used for estimation of the amount of process standard deviation since the development and implementation of Statistical Quality Control (SQC), known as Statistical Process Control (SPC). Since the size of range is a biased estimate of standard deviation the so-called adjustment factors (correction factors) are used to estimate process standard deviation according to average range amount. The possibility of using d2 tables containing the required “correction” factor is discussed in the paper.
Key words and phrases: cutting speed; optimisation of cutting values; single objective optimisation problem; single-tool turning operation.
Abstract: In practice solution results of the cutting values optimisation problem are often not flexible enough to choose for the concrete decision making in the workshop. Beyond single set of the optimal cutting values f*, vc*, there are ranges of vital interest around them, i.e., reasonable decision making intervals. Based on Koch (1988), a new approach to get better, flexible solutions for the machining problem is presented. The original general and a simplified mathematical models for the decision making scope with predetermined risk are formulated. For a known example the optimum ranges for the simplified mathematical model are obtained and introduced.
Key words and phrases: metrology reliability; metrology resource; processor means of thermo-physical measurements.
Abstract: Method of estimating metrology reliability of processor means of thermo-physical measurements at the stage of designing with regard for temperature mode of operation.
Key words and phrases: Boolean algebras; introductory course; realization of didactic historical method.
Abstract: The introductory academic course concerned with Boolean algebras is offered. They are the main and general concept in a block of a few mathematics courses.
Key words and phrases: statistics of publications and innovations; the number of students, post-graduate students, scientific workers; brain leakage; negative effects of economy crisis.
Abstract: The statistics of innovations, publications, dynamics of training and use of scientific staff in Russia during the crisis of the 90s of the XX century is given. The analysis of negative social effects of the crisis is completed.
Key words and phrases: anti-crisis management; regional economy.
Abstract: Main problems regarding the development of regional programs, general requirements to federal programs and their adaptation to regional programs conditions are considered.
Key words and phrases: company management; regional concept of quality control; quality control; production quality; functional methodological concept of quality control.
Abstract: Methodological approaches to implementation of regional concept of quality are considered. Theoretical grounds of evolutional transition of company general management to the format of regional program of quality control over products and services under the influence of quality control are given. System approach to region management on the basis of quality control program contributes to the improvement of economic factors and living standards in the region.
Key words and phrases: investments; industry; region; management.
Abstract: investments; industry; region; management.
Key words and phrases: property; state property; foreign countries; the role of property.
Abstract: The role of state property in the economy of advanced countries is considered. The analysis of main trends in the development of state property in market economy countries is given.
Key words and phrases: Kasakhstan; nomads; nomadic state.
Abstract: matters and prospects of statehood development of nomadic peoples are considered.
Key words and phrases: voluntary public guards; public order maintenance; public organizations; legal order maintenance; internal affairs bodies; law-enforcement activity.
Abstract: The author studies the matters of delegating authorities to public organizations in public order maintenance in chronological order. Some problems of these organizations activity, their legal basis in particular are considered.
Key words and phrases: feminism; gender differences; stereotypical speech; women's and men's language; women's speech; men's speech.
Abstract: This paper critically examines Third Wave feminist linguistics, a form of analysis, which challenges Second Wave feminist linguistics' analysis of the language of women and men as homogeneous groups. Rather than assuming that men and women necessarily speak in different ways, men being direct and forceful, women being hesitant, polite and apologetic, Third Wave feminist linguistics analyses the complex negotiations undertaken by women and men with gendered domains.
Key words and phrases: social psychological climate; male manager; female manager; factor representation; symptoms of conflictness; psychology of routine conflicts; management.
Abstract: Gender and sex differences in troubleshooting styles and tactics, personality peculiarities of male and female managers and reasons for conflicts are considered. The effect of the degree of conflictness of male and female managers on their subordinates is shown. It should be taken into consideration that the peculiarities of psychological coping with conflicts depend on gender and age characteristics, the area of management and importance of conflicts consequences on the person. The results of the work show the existence of significant sex, personality and gender differences in troubleshooting which is crucial for management and should be taken into account in business so as to improve its efficiency.