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Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates and Young Scientists: Modern Techniques and Technologies
Compounds of mercury, chrome and arsenic are very dangerous to man due to their instability and their interaction with fats, providing long periods of partial ejection, i. e. the time during which half of the agent assimilated with the organism ejects or destructs. Hence, the control of mercury, chrome and arsenic content in the water is very critical. In this paper, the sorption capabilities of the...
Gnoseological relativism describes the cyclicity when the subject (system) cognizing the definite level of synergetic connections with other subjects is bounded by the following triplicity: subsystem-system-oversystem (that was investigated metaphysically by Platon). Thus realizing the last experience (as the degree of the subsystems perception) as well as the purpose of the oversystem the subject...
This paper describes a virtual laboratory that is specifically designed for educational courses that investigate the different processes involved in electrical variables measurements. The virtual laboratory is based on a powerful imitation model with reorganizing structure which reproduces not only the informational structure of the process but also their spatio-temporal peculiarities. The imitation...
The Siberian Lyceum has developed a computer-aided instruction (CAI) system for teaching the Russian language. Called the Information and Didactic System (IDS) Symbol, it has four levels of automation providing the capability to introduce any intermediate levels into the teaching process - from the episodic usage of engineering means of self-testing to the complete automation similar to traditional...
One of the most commonly used methods of increasing average power of the laser generation on metals vapors is an increase of the frequency of the excitation pulses succession. Other possible ways of increasing generation characteristics of laser on metals vapors is ranging laser characteristics in the active medium of the cylindrical configuration with the longitudinal pulse alternating discharge...
Manufacturing the complex shapes of materials used in aircraft requires a high degree of accuracy. Hence, techniques to automate this process would be very valuable. This paper proposes the use of the similarity theory to determine the technological conditions of grinding and other kinds of processing. Using this approach, the details of simple shape processing can be used as model and the data obtained...
A comparative analysis of the electrical and optical characteristics of different kinds of serial semiconducting radiation sources was performed with the aim of evaluating the quality of the semiconducting light sources. The analysis aims to simplify and unify the change process of the traditional light sources by the light-emitting diodes in standard devices.
The current methods for measuring ultrasound propagation time are based on the formation and further measurement of the time interval between the radiation and locked-on signal equal to the time of the sound propagation. The mechanism of this interval formation is determined by the circuit of the control and construction of the measurement converters. To ensure high accuracy of the measurement of...
The use of positive planetary gears has been limited by the complexity of the problem of internal toothing synthesis when there is a small difference in the number of wheel and pinion gear teeth. While blocking contours can be used to solve the synthesis problem, it has certain disadvantages, particularly because the region inside the blocking contour where all conditions by the toothing quality indications...
This paper describes the development of the IAB-60/60 storage battery simulator especially designed for testing the power supply systems of different types of spacecrafts. The simulator features an embedded microprocessor control system consisting of a central processor and a voltage and current control device. The microprocessor control system provides the required output characteristics and control...
The design of a transformer bridge capable of providing non-excluded systematic error less than 0.001% and a resolving capability within the wide dynamic range is presented. The increase in resolving capability allows for new effective possibilities of using transformer bridges.
This paper discusses how new technologies can be used to improve rolling stock repair initiatives. An optimal financing policy for innovation investment can be achieved by taking into account the assumed technical and economic impact. An effective way to solve the problem of innovation investment is to analyze the vulnerable units of the rolling stock as well as to analyze the project costs for modernization...
This paper proposes the use of predictive control systems coupled with artificial neural networks (ANN) to control the dynamic behavior of a single-link flexible manipulator rotating in a horizontal plane. For systems with unessential nonlinearity and without non-minimum phase properties, it is quite enough to use one-step ahead predictive models to achieve efficient control, although they do not...
This paper describes a semiconductor gas sensor and a portable device for the simultaneous determination of the composition of three gas components. The device consists of a gas chamber and an electron device, which includes a measurement module, microprocessor block and an indicator. The device can be used in control systems for emergency prevention in metal mining industry and chemical, oil and...
One of the problems in spacecraft design is ensuring compliance with control requirements through the use of effectors. The effector orientation system provide the control moment by using different principles. Here, the effector considered uses the reactive principle as its basis for controlling moment. Considerable mass reserve can be achieved during calculation and optimization of performance specifications...
For the oil industry, the problem of faultless control is especially critical because of the possible dangerous consequences for the environment, equipment and life. This paper examines the critical elements of the electric drive of the valves installed on the oil tube. The algorithms described in this paper were practically tested and appreciated as "effective". They allow to soften some...
This paper aims to develop a means to estimate the practical efficiency of heart rate variability (HRV) analysis in the perioperative period to help define the adequacy of anesthesia. By monitoring the patient's status with the help of the indicated agents, the adequacy of anesthesia can be estimated and early diagnostics of complications originating during an anesthesia can be provided. For the anesthesiologist,...
Highly sensitive laser fluorescent detectors are required for high-performance liquid chromatography (HPLC). In a series of cases using laser excitation sources allows one to solve the problem of reaching low limits of detection even for the agents with low quantum yields of fluorescence. The primary task in designing laser detector lies in the choice of laser source based on the following parameters:...
This paper describes a program experimental complex designed to automate the experiment fulfillment with different variants of the JPEG similar algorithms steps of the image compression. The given complex is part of the work "Development of the compression algorithm of full color display based on Walsh function" [M.A. Karagodin and A.N. Osokin, 2002]. The program experimental complex is...
The results of spectral and energy characteristics investigation of the rhodamine 6G dye fluorescence in the liquid droplet form with the suspended particles of TiO2 are given. It is shown that the nanoparticles availability in drops with the dye results in a double decrease of the generation threshold on the "whispering gallery" modes. Studying these effects is of great interest in the...
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