The titanium dioxide synthesized by an electrochemical method is a perspective material for use in solar elements and catalysts of cleaning of water and air environments. Regularities of electrochemical synthesis of titanium dioxide in glycerin dilute solutions (1:1) in the presence of ammonium fluoride at 2-14 V are investigated. Mathematical scheduling of synthesis process according to plans of first order with use of the complete three-factorial experiment is carried out, the adequate regression equations for formation processes of a titanium dioxide in the field of potentials 8-14 V are received. The electron microscopy method proved porosity of synthesizable layers of titanium dioxide. Water content influence in electrolyte on the speed of electrochemical process and potential size influence on titanium dioxide materials yield is established. It is shown that under the chosen electrolysis conditions electrochemical process is accompanied by the considerable chemical disolution of a titanium. Electrochemical processes in water containing glycerin are investigated by a cyclic voltammetry method. It is established that at electrochemical oxidation of Ti in water containing glycerin (1:1) porous TiO2 with a materials yield no more than 25% is formed.
Keywords: titanium, titanium dioxide, electrochemical oxidation, glycerin, ammonium fluoride, experiment scheduling
The superposition conception of endogenous factors influence on the hem lymphatic occupancy in the organism vascular system is presented. The main influence factors creating the wave modulation on the pulse blood and lymph flows in the vessels and liquid’s moving in the around tissues are considered in the physical model. On the basis of the model is justified hemodynamic functional test with dosed compression effects on local areas of the body, in which the reaction is analyzed for changes in the spectrum of signals related to the changes exhibited by volume-dynamic changes in the vessels. Shows the functional scheme of the formation of the wave changes hem lymphatic, allowing planning of the study.
Keywords: Hem lymphatic occupancy, endogenous factors, compression action, spectral analyzing of signals
The article describes one of the possible approaches to the investigation of a technique of definition of quality indicators of vehicles and lifting-transport machines, examines the concept - combining numerical estimate of single and complex indices into a single composite index.
The following algorithms: the algorithm of finding the functional quality systems, represented by the linear form, with varying competence of experts, the algorithm modified method, allowing to make the transition from бифакторного distribution to мультифакторному, which is important when processing expert information; algorithm modified method, characterized by greater commonality and expanding the use of standard computer programmes at the decision of problems of estimation of quality systems on a computer.
Keywords: The level of quality of complex technical systems, decomposition methods of technical requirements, functional quality, modified method,algorithm
The paper shows the feasibility of using a current amplifier in the filters RF and microwave ranges. By analyzing the basic structure of the second-order level sufficient conditions for the efficient use of active elements. The examples of methodological nature and formulated conclusions of practical importance.
Keywords: RF filter, microwave filter, parametric sensitivity, current amplifiers, functional modeline setting
This paper describes application of different criteria for estimating parameters of traffic simulation. For comparison following methods were used: statistical methods for comparison of a flow and speed in control points of a network - analysis of variance (ANOVA), Theil's U-statistics; relationships between flow, density and speed; relationships between trip time and stop time with using two-fluid models of traffic flow. For this aim we also used concept of meta-model. In order to implement this method we need on the first step to create separately relationship between traffic flow parameters for observation and simulation data and then to estimate combined model. The paper included results of calculation
Keywords: validation, traffic, simulation, flow, speed
The values the frequencies of the stretching vibrations of anions SCN-, NO2-, NO3-, CℓO4- in molten salts of alkali metals and their point group symmetry. There is a correlation with an increase in the frequency of symmetry
Keywords: Raman Spectra; anions; molten solts; group symmetry.
In the implementation of dynamic re-routing of traffic it is important to notice that the threshold depends on the network layout and type of the roads. Full paper includes appropriate relationships, figures and analysis of simulation results to define the re-routing period of dynamic traffic rerouti
Keywords: re-routing, cycle, dynamic traffic assignment, level of services
The paper presents the developed methodological aspects of management of sales of company performance in the context of the proposed type of classification of consumer goods «Innovative product», «New product», «standard product», «Mass product» in the conditions of the competitive environment on the basis of regulation of the relationship between the number of (physical volume) of the goods sold and value added (trade imposing on them) for subsequent determination required to ensure the effectiveness of the sales volumes.
Keywords: Types of classification of consumer goods, «Innovative product», «New product», «standard product», the methodological approach to the management of sales, the Mechanism of management of sales
The features of the port transport and technological systems from the point of choosing the location of the distribution terminal, as the damper areas on the directions of export cargo. The authors propose a modification values of the coefficient of proportionality fractional power function the gravitational model and introduced the term "measure transport gravity" to evaluate options for placement of distribution terminals in the transport network.
Keywords: Port rail transport technology system, cargo traffic, distribution terminal, graph theory, a modified gravity model, a measure of the transport of gravitation factor saturation network connections
The model of on-line transaction processing system architecture constructed by a principle of cloud structure is considered. The mathematical model of OLTP-system as the queuing system is offered. Results of modeling and their analysis are led.
Keywords: On-line transaction processing system, Cloud architecture, Distributed database, Queuing system
Most of web pages of the Web are inaccessible for the blind users. And the main reason is a lack of the semantics at the source code (technical) level of web pages and absence of the navigational components. In this work we propose a new web page representation---multiaxial navigation model---representing web documents in the form convinient for the blind users. Moreover, we present methodology for the navigation on the model proposed, that ensure an efficiency of user mobility. Automatic transformation of a web page into the multiaxial navigation model and navigation means are realized in the Blindzilla prototype. An efficiency of the proposed concepts is proven experimentally regarding contemporary screen readers, such as JAWS, Window-Eyes, and Fire Vox.
Keywords: web accessibility, navigation, web page, web technologies
The article is devoted to the problem of the research of geopolitical processes on the world regions’ scale under present-day conditions. The article substantiates the necessity of their analysis with the help of the cognitive approach as an effective means of cognition of the interconnections and interrelationships within the complicated systems. With that aim in view the specifics and the stages of the cognitive modeling are given thorough analysis in the article. This type of modeling is adapted to the analysis of geopolitical dynamics on the regional/sub regional level taking into consideration its aptitudes to make prognostic scenarios of the development of the situation. The possibilities of the cognitive modeling of geopolitical processes are illustrated on the example of the situation in three sub regions constituting one (big) the Black Sea – Caspian region.
Keywords: World regions, geopolitical processes, modeling of the complicated systems, modeling of the geopolitical processes, cognitive modeling, the program’s system of the cognitive modeling, the Black Sea – Caspian Region, the Black Sea sub region, the Caucasus
Article describes actual problems of personal navigation in portable scientific document set representation. Proposed algorithm for ranking document graph paths based on machine learning, described algorithm analysis and most probable navigation context parts.
Keywords: Document set navigation, machine learning, navigation context, scientific data visualization
Structure of surface acoustic waves(SAW) of CO sensor was developed. SAW sensor include transceiving IDT and catoptric IDT, which is loaded on the impedance of ZnO nanorods. Peak of reflection SAW from IDT clearly observed as result Fourier transformation of time function of pulsed response. IDT loaded on resistance paralleled ZnO nanorods, which depends on the concentration of CO.
Keywords: ZnO nanorods, device on SAW, CO sensor
The problem of interaction of mutually perpendicular magnetic fields in superconductors is considered. Possibility of use of a nonlinear susceptibility of superconductors for measurement of a magnetic field is shown, the assessment of sensitivity of the cryogenic probe magnetometer is carried out.
Keywords: superconductor, magnetometer, SQUID, cryotron, the crossed magnetic fields, non-linear magnetic, cryogenic probe