Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.最新文献
{"title":"Unit for self-testing and external knowledge control","authors":"M. Shevelev","doi":"10.1109/SPCMTT.2003.1438205","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438205","url":null,"abstract":"In information didactic systems, the automation of self-testing and the control of student external knowledge is carried out using computers and a set of specialized units, the main element of which is the electron coach, called Symbol-Higher Institution. This paper introduces a new unit for the same purpose but with advanced facilities. Called Symbol-SK, it includes the standard computer keyboard with the display for the necessary signal output. Symbol-SK features the password formation informed by the coach to the lead answer, which solves the problems of self-testing and control. Symbol-SK was developed in accordance with the requirements of the information compatibility with previous units for the knowledge control and self-testing which forms the Symbol system.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131625489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Features of metal products treatment in nitric acid","authors":"A. Korshunov, V.R. Gladyshev, S. Kovalyova","doi":"10.1109/SPCMTT.2003.1438182","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438182","url":null,"abstract":"Reactions of metals with nitric acid have been studied for a long time and are widely used in technologies of chemical etching and polishing of products made of metals and alloys. High values of the redox potentials of nitric acid solutions allow to carry out the operations of the oxides film removal from the metal surface and to etch the products of complicated form made of electropositive metals and alloys on their basis. The purpose of the present work was the study of kinetics and mechanism of the process of copper dissolution in HNO3 in wide concentration interval (4.0-14.8 M). Kinetics of interaction between copper and nitric acid has been investigated. The schema of the mechanism of this reaction has been offered. The schema of mutual transformations of products of nitric acid reduction in solution has been confirmed by the account of material balance on nitrogen.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125344873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Virtual laboratory in new educational technologies","authors":"S. Shidlovskiy, O. M. Ravodin, V. S. Shidlovskiy","doi":"10.1109/SPCMTT.2003.1438214","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438214","url":null,"abstract":"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 model enables students to create not only virtual models of the devices carrying out the same functions as their physical analogues, but also the systems of data collection which are necessary for managing process organization, measurement, control, testing and monitoring. Hence, the students have the opportunity to see on the display the front panels of the devices in a usual form for engineers and to carry out work with their managing systems during investigation.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129155672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigating laser on cooper vapors with the profiled operation channel","authors":"O.V. Zhdoneav, A. Pavlinsky, D. Shiyan","doi":"10.1109/SPCMTT.2003.1438213","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438213","url":null,"abstract":"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. To date the best results of the specific average power of generation are achieved in the gas discharge tubes (GDT) of the small volume. These indications are obtained with relatively high frequencies of the excitation pulses reiteration. The best results of the efficiency are achieved, whereas, in GDT of the large diameter with low frequency of the excitation pulses succession. Prior performed investigations have shown that there is a strong correlation between the concentration of the copper vapors and specific output. Thus, to achieve high efficiency of the laser operation temperature of the discharge channel without overheating. In designing such a construction the profiled operation channel is used by introducing radial embeddings. The given paper considers the experimental and theoretical analysis of the radial embeddings effect on the laser generation characteristics","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124537817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Meter of gyrodines moments","authors":"N. Gormakov, N. V. Shpak","doi":"10.1109/SPCMTT.2003.1438144","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438144","url":null,"abstract":"Currently the control of the orbit probes and the Earth's artificial satellites orientation is carried out by means of active systems, the executive units of which are the gyrodines. The accuracy of the orientation to considerable degree depends on the quality of the controlling moments developed by the gyrodines. This paper describes a gyrodine design to provide for the measurement of the constant and alternating moments within the required range with the specified accuracy.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129750854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nickel-hydrogen storage battery simulator of 28HB70-P type","authors":"M.A. Golovatov, D. Berber","doi":"10.1109/SPCMTT.2003.1438149","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438149","url":null,"abstract":"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 of the internal parameters of the simulator and supports the connection between the simulator and the external personal computer through a serial interface.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130422013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reference temperature selection when the heat conducttvity coefficient measured","authors":"R. Gabbasova, Y. Rakov","doi":"10.1109/SPCMTT.2003.1438130","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438130","url":null,"abstract":"Previous the method validation of the heat conductivity coefficient (HCC) measurement of solids is considered. The method is based on solving quasi-inverse multivariate problem of heat conductivity in rectangular parallelepiped, which is heated with the radiant flux from one of edges and radiated freely with the constant temperature from all sides into the medium. With the theoretical method validation one assumed the constancy of HCC. Such assumption is right if the temperature differences are small in sample. With great temperature differences it is necessary to refer the measured values of HCC to the definite temperature (reference temperature). In the given paper the reference temperature selection with the linear dependence of HCC on the temperature is founded","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129711967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of the oxide coating formation process with quasi-periodical pores arrangement","authors":"Z. Ramazanova, M.I. Pleshakova, A. I. Mamaev","doi":"10.1109/SPCMTT.2003.1438192","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438192","url":null,"abstract":"In the given paper, the investigation results of the uniform oxide coating formation with the quasi-periodical pores arrangement onto aluminum and its alloys are considered. To design oxide coating, the power source was used to obtain bio-polar voltage pulses of squared shape. It also provided for continuous adjustment of the duration of every pulse, the frequency as well as the current amplitude and both pulses voltage. Thus, the possibility of designing oxide coating with the quasi-periodical arrangement of pores under conditions of spark discharge is considered. It was established that conditionally quasi-periodical arrangement of pores depends on the electrolyte compound and the conditions of the coating formation.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133711922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The algorithm of nonmeasurable variable estimation in discrete electromechanical system","authors":"A. Bogdanov, V. Bukreev, S.K. Sosnin","doi":"10.1109/SPCMTT.2003.1438162","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438162","url":null,"abstract":"This paper discusses the design of a state observer for an electric drive with pulse-width modulation of control signal and time division of reconstruction and control processes. An equation was formulated as the basis for the operation algorithm of the switching device, which provides switching on the control action of the electric drive when the transient processes in the state observer are over. The efficiency of the state observer operation algorithm was estimated for the direct current electric drive with a speed regulator.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116486797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Obtaining and properties of the copper nano-dimensional powders","authors":"V.V. Shamansky, É. V. Stepanyan, G. Saveliev","doi":"10.1109/SPCMTT.2003.1438193","DOIUrl":"https://doi.org/10.1109/SPCMTT.2003.1438193","url":null,"abstract":"This paper investigates the properties of the nanopowders obtained by the electrical explosion of the metallic conductors (EEMC) to determine the influence of chemically active atmosphere on the properties of Cu powder. To investigate the active gas influence on the structure of the formed nano-powders, the general photos of the powders in different atmospheres were obtained. We concluded that with Cu EEMC in active atmosphere, an increase of the contribution of the diffusion-limited agglomeration in the mechanism of the formation growth of fractal structures occurs. Lastly, it was established that with Cu EEMC in CO2 and N2 a decrease of the aggregates average number and an increase of the agglomerates average number occur.","PeriodicalId":391891,"journal":{"name":"Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003.","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}