Key words and phrases:
innovation index; life cycle; multi-criteria management; multi-project environment; optimal choice; optimal control; project management; risk degree.
Abstract:
The paper presents the approach to formalization of project management tasks in designing and modernization of respiratory protection. Multi-level project management has been proposed for the first time; its low level involves the choice of optimal option of technical solution to a single project, while its upper level involves project management and multi-criteria management of projects flow, i.e. multi-project environment. The parameters characterizing the degree of complete implementation of technical ideas (the innovation index) and the risk degree characterizing the probability of the products function failure have been included in the most significant parameters of project management tasks for the first time.
Key words and phrases: dynamic system; managerial decisions; model classification; system analysis technique; system indexes; trajectories of functioning state fluctuations.
Abstract: The paper studies the peculiarities of introduction of state set of functioning for evolutionary systems. The definitions for models of various type models are given. The modeling techniques of evolutionary systems with dynamic state sets of functioning are presented.
Key words and phrases: automated control systems; control system stability; optimal control; wind-power engineering.
Abstract: The paper studies the automated control over oscillation-type wind-driven power plant and its operation stability.
Key words and phrases:
degree of supply voltage distortion; dynamic modes; imitation model; non-linear system; non-symmetrical and dynamic loads; standards of system dynamic characteristics.
Abstract:
The paper studies the designed simulation model in the Simulink media of complex non-linear system accounting for the effect of external loads including non-symmetrical linear and dynamic ones; thus, it allows estimating the degree of supply voltage distortion. It enables to calculate the cross-section of neutral conductor taking into account the balanced current as well as to check whether the dynamic characteristics of the system meet the standards when fed from industrial power supply. Simulink, developed as a tool for modeling, simulating and analyzing multidomain dynamic systems (including linear and nonlinear systems), allows to estimate the degree of supply voltage distortion. It enables to calculate the cross-section of neutral conductor taking into account the electric current as well as to check whether the dynamic characteristics of the system meet the standards in industrial network operation.
Key words and phrases: design parameters; frequency alteration; jet acoustics; jet acoustic signals generators.
Abstract: The paper is devoted to the investigation of physical grounds of occurrence of sound frequency fluctuations at the output of jet acoustic generator. The regularities of fluctuation frequency alteration under changing design parameters of the generator are revealed.
Key words and phrases:
computer linguistics; dialogues system; frame; tinplating.
Abstract:
The paper studies the matters of designing the text synthesis systems in natural language. The description of designing and servicing subsystems is given. The subsystem flow chart is shown.
Key words and phrases: correlation coefficient; correlation ratio; image quality; imaging techniques; psychophysical qualimetry examinations; sensitivity coefficient.
Abstract: The techniques of psychophysical and functional qualimetry are developed; they enable to determine the possibility of correlation ratios of the parameters influencing the outgoing quality of imaging techniques. The paper presents the algorithm of accuracy evaluation of statistic criteria determining parameters correlation dependencies.
Key words and phrases: discrete Radon transform; extreme points warping; k-nearest neighbor (KNN); signature verification; support vector machine (SVM).
Abstract: We present a system for off-line signature verification, approaching the problem as a two-class pattern recognition problem. We use Discrete Radon Transform to extract global features from the signatures. During enrollment, a number of reference signatures are used for each registered user and cross aligned to extract statistics about that user’s signature. A test signature’s verification is established by first aligning it with each reference signature for the claimed user. The signature is then classified as genuine or forgery, according to the alignment scores which are normalized by reference statistics, using standard pattern classification techniques. We experimented with SVM classifier and KNN classifier. Using a database of 2250 signatures (genuine signatures and skilled forgeries) from 75 writers our present system achieves a performance of approximately 80 % when used SVM classifier and a performance of approximately 70 % in the case of KNN classifier.
Key words and phrases: energy-saving control; microprocessor systems.
Abstract: The paper presents the key aspects of designing the systems of energy saving control as well as application of conceptual models in the course of designing similar systems. The conceptual model of real object – module boiler plant – is given as an example.
Key words and phrases: data-control system; optimal control; rechargeable battery.
Abstract: The paper studies aspects of implementation of optimal control techniques in the system of data control over rechargeable batteries group.
Key words and phrases: configuration technique; metrological reliability; metrological resource.
Abstract: The paper proposes the technique to improve metrological reliability of measuring systems by optimal choice of element nominals.
Key words and phrases: construction heat engineering; heat-conduction coefficient; heat-transfer coefficient; high frequency heating; microprocessor system; stationary heat flow; thermo-physical properties.
Abstract: The paper studies the technique and the system for determining one of the basic thermo-physical properties of construction materials, i.e. heat-conduction coefficient, as well as parameters of convective heat transfer intensity, i.e. heat-transfer coefficient when applying high-frequency heating of the examined samples. The technique involves high frequency heating of material in the short period of time until the stationary heat flow through the examined sample is produced, measuring of the temperature points in controlled parts of the sample as well as the environment temperature and the capacity of the high frequency radiation reflected from the surface of the sample edge. The unknown thermo-physical properties are determined on the basis of the produced mathematical correlations and experimental data.
Key words and phrases: multi-chamber centrifugal devices; Navier-Stokes equation; non-dimensional variables.
Abstract: The paper studies the solution to Navier-Stokes equations in cylindrical coordinate system and the fluid flow in gaps between disks rotating at different angle velocity. With the substitution of T. Carman’s equation system Navier-Stokes equation is set to non-dimensional type. The solution to the latter is found via numerical integration.
Key words and phrases: porous fiber material; silica gel; sorption isotherms of water vapor; sorption kinetics of water vapor; water-absorbing agents.
Abstract: Infusion of hygroscopic salts and silica gels in porous fiber material on the basis of thermal-resistant organic fiber enables to provide much higher sorption kinetics of water vapor than when granulated sorbent agents are used.
Key words and phrases: asopigments; cyclic pulse mode of washing; filter press; washing; water-soluble salts.
Abstract: The paper presents the cyclic pulse mode of paste washing in filter equipment to produce high quality pigment pastes. Physical model of the process and its mathematical description enabling to determine the required number of washing cycles to produce the given level of product purity are presented.
Key words and phrases: non-destructive control; phase transfer heat; solid-state transformation; thermo-physical properties.
Abstract: The paper presents calculations enabling to determine through non-destructive technique the dynamics of phase transfer border in semi-bounded body made from polymer material subject to heating from flat round heater with constant power. The numerical and experimental ways of implementation are given.
Key words and phrases: boundary and initial conditions; isometric and non-isometric processes; mathematical model; mathematical simulation; rheological characteristics; solid-phase extrusion; SHS-extrusion; technological process; thermal model.
Abstract: The work expounds the basic aspects of mathematical simulation of the process of solid phase extrusion of composites. It reviews the approaches, ideas and methods of the mathematical simulation that are equally useful for SHS and other processes of chemical technology. One gives the example of successful application of mathematical simulation for specific practical recommendations and prognosis of problem situations in the technological practice of SHS-extrusion.
Key words and phrases: color; distribution parameters; HSL color model; organoleptical quality indexes.
Abstract: The paper studies the possibility of using color image for color spectrum definition through RGB and HSL color models. The paper shows the possibility of this technique application to control color as one of the essential organoleptical indexes of food stuffs illustrated by bakery products.
Key words and phrases: caustic soda; cyclic voltammetry; nickel oxide.
Abstract: The paper studies the behavior of nickel oxides on air oxidized nickel electrode in concentrated soda solutions by method of cyclic voltammetry. It is shown, that at stationary potential with which shooting cyclic V/A grafics begins, the nickel surface is coated with dense film Ni(OH)2 and as cycling goes all the subsequent electrode responses (Ni(OH)2 ? Ni3O4; Ni3O4?Ni2O3) go already on the surface. It proves the two-electron mechanism of Ni3O4 oxidization into Ni2O3 and deoxidization of Ni2O3 into Ni3O4 when conversion factor value equals 0,5.
Key words and phrases: air cathode; alkaline solution; chemical current source; labialized carbons; zincous anode.
Abstract: The paper proposes the technique of hydrohobization of powdered carbon materials for air electrodes and the technology of producing zincous anode of metal-air chemical current source. The extraction of surface-active materials for hydrohobizated carbon materials causes the increase in porosity, dynamic gas transmission and as a result the rise in current density and improvement of electrical characteristics of chemical current source.
Key words and phrases: acidic solutions; elevated temperature; hydrogen diffusion; input side corrosion potential; metal absorption; steel membrane.
Abstract: The paper studies the dependence of hydrogen diffusion flow through steel membrane from aqueous acidic chloride solutions on the temperature (20…80 °Ñ) under the corrosion potential. The temperature effect and media acidity on hydrogen quantity absorbed by metal are evaluated experimentally.
Key words and phrases: diesel fuel; inhibitive additive; moisture permeability; moisture collection agent; sulfur oxide (IV); waste oil.
Abstract: The paper studies moisture permeability of anti-corrosive conservation compositions based on diesel fuel, waste motor oil and fresh rape oil. The influence of solvent base, concentration of gun grease as inhibitive additive, relative air humidity, content of SO2 (%) and length of testing are examined.
Key words and phrases: arc-jet synthesis; carbon nanotubes; mathematical modeling.
Abstract: The paper presents the study aimed at revealing the possibilities of more effective management of carbon nanotubes synthesis. The arc-jet method of synthesis is studied and experimental data are presented.
Key words and phrases: mono-chrome sensitivity; selective converter; spectral characteristic.
Abstract: The paper describes the analysis of properties of spectral distribution of selective converter of infra-red radiation on the basis of Cd1–xSnxS.
Key words and phrases: dynamic model; curve; free vibrations; forced vibrations; frequency; processing system; rigidity; rotor device; vibroactivity.
Abstract: The paper proposes the criterion of dividing processing system of rotor devices into mechanical system with centered and distributed parameters by values of deviations of its corresponding initial natural frequencies of vibrations calculated with supposed absolute rigidity of valves and their curve.
Key words and phrases: decision-making; digital model of territory; mathematical modeling; regional communal systems.
Abstract: The paper studies mathematical methods and instruments used for designing of digital space model of municipal territory providing efficient functioning of communal systems.
Key words and phrases: agricultural soil; chloropicrin; corn; dialen; glyphosate; pesticides.
Abstract: The paper presents the results of analysis of agricultural soil and corn samples for the content of glyphosate, dialen and chloropicrin in Nikiforovsky, Bondarsky and Sampursky districts of Tambov region; possible effects of these pesticides on human beings’ health are studied.
Key words and phrases: biography; history; logic; logic seminars; logic teaching; Sofia Aleksandrovna Yanovskaya.
Abstract: The paper presents the scientific biography of the outstanding person, teacher and scientist – S.A. Yanovskaya. The paper gives the brief analysis of her scientific and teaching work. The recollections of her colleagues, friends and followers are cited.
Key words and phrases: biography; career; photochemistry.
Abstract: The paper presents biography data and main stages in the working life of Professor Ivan Stepanovich Plotnikov, who was the creator of the first photochemistry laboratory in Russia and the author of the first course in photochemistry delivered in Moscow University.
Key words and phrases: budget federalism; budgeting management; concept of performance management; management by objectives; medium-term budget planning; performance-oriented budgeting; state financial management.
Abstract: The paper reveals the stages of budgeting in RF, special attention is paid to the third stage. New approaches to budgeting based on the concept of performance-oriented management are considered. Within the framework of the given concept the content and the principles of management by objectives and the transfer to medium-term budgeting are studied. The advantages of this approach and its influence on the quality of budget planning management are outlined. Some results of putting new principles into practice of budgeting are summarized; major tasks of budget policy are set for the future.
Key words and phrases: All-Union Lenin Communist Union of Youth; party leadership; statism; youth ministry; purge.
Abstract: The paper describes the period of forced construction of socialism on the basis of new principles of party leadership in Komsosmol when its power was enhanced. The problem is studied both in theoretical and practical aspects taking into account the regional practices (illustrated by Tambov region, which was the part of Central Chernozem administrative division until 1937 and then it became a separate administrative division of RSFSR (Russian Soviet Federative Socialist Republic)).