Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021167
Chen Baoyuan, Liu Ying, Yue Haibin, Z. Yongjian
In speech processing, Speech Endpoint Confirmation has a very important position. Sub-band average-energy and the variance of the wavelet coefficients are the common algorithms, the disadvantage of the former algorithm is the limitation of only suitable for Gaussian white noise environment, while the latter algorithm can't overcome the drawback in Time-consuming, bad real-time. According to these problems, this paper puts forward optimization algorithm combined with the two methods. It improves applicability in speech endpoint confirmation. The MATLAB simulation results show that the system using the optimization algorithm achieved optimal accuracy and quickness, and gained anticipative effect.
{"title":"The optimization of Speech Endpoint Confirmation research","authors":"Chen Baoyuan, Liu Ying, Yue Haibin, Z. Yongjian","doi":"10.1109/IFOST.2011.6021167","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021167","url":null,"abstract":"In speech processing, Speech Endpoint Confirmation has a very important position. Sub-band average-energy and the variance of the wavelet coefficients are the common algorithms, the disadvantage of the former algorithm is the limitation of only suitable for Gaussian white noise environment, while the latter algorithm can't overcome the drawback in Time-consuming, bad real-time. According to these problems, this paper puts forward optimization algorithm combined with the two methods. It improves applicability in speech endpoint confirmation. The MATLAB simulation results show that the system using the optimization algorithm achieved optimal accuracy and quickness, and gained anticipative effect.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88936506","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021255
Yingli Shu, Guozhi Zhang, Zhenhai Yang, Xian Li
WCF Method is a classic way to derive lower confidence limits of parameter functions. Based on the analytical expression of the reliability function for general complex system described by the minimal path, this article gives the formula of the lower confidence limit of reliability by WCF method. Simulation studies for the Bridge system demonstrate the efficiency of the method and the superiority compared with other methods.
{"title":"Lower confidence limits of reliability for general complex system","authors":"Yingli Shu, Guozhi Zhang, Zhenhai Yang, Xian Li","doi":"10.1109/IFOST.2011.6021255","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021255","url":null,"abstract":"WCF Method is a classic way to derive lower confidence limits of parameter functions. Based on the analytical expression of the reliability function for general complex system described by the minimal path, this article gives the formula of the lower confidence limit of reliability by WCF method. Simulation studies for the Bridge system demonstrate the efficiency of the method and the superiority compared with other methods.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86038699","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}
A small-angle x-ray scattering (SAXS) technique using synchrotron radiation as the x-ray source has been employed to characterize the microstructure of PI/TiO2 hybrid films prepared by Sol-Gel method. It is shown that the SAXS profile is hardly constant with Porod's law showing a negative and positive slope, suggesting that an interfacial layer exists between the nanoparticles and PI matrix in films when content of more than 5%. This suggests that the inorganic nanoparticles linked to the PI matrix through covalent bond. However, the only positive deviation exists in the film of content 5%. The reason is that there is a fluctuation of electron density in hybrid system. This kind of material has also been proved to possess both surface and mass fractal structures.
{"title":"Effect of content on microstructure of PI/TiO2 hybrid Films","authors":"Xiaoxu Liu, Wu Yan, Jinghua Yin, Minghua Chen, Yu Feng, Guang Li","doi":"10.1109/IFOST.2011.6021010","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021010","url":null,"abstract":"A small-angle x-ray scattering (SAXS) technique using synchrotron radiation as the x-ray source has been employed to characterize the microstructure of PI/TiO2 hybrid films prepared by Sol-Gel method. It is shown that the SAXS profile is hardly constant with Porod's law showing a negative and positive slope, suggesting that an interfacial layer exists between the nanoparticles and PI matrix in films when content of more than 5%. This suggests that the inorganic nanoparticles linked to the PI matrix through covalent bond. However, the only positive deviation exists in the film of content 5%. The reason is that there is a fluctuation of electron density in hybrid system. This kind of material has also been proved to possess both surface and mass fractal structures.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86049953","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021017
E. Uyanga, G. Sevjidsuren, B. Bumaa, D. Sangaa, P. Altantsog, Uyanga Enkhnaran, Sevjidsuren Galsan
Proton exchange membrane fuel cells (PEMFCs), as clean energy - converting devices, have been attracting enormous research interest as due to their high efficiency, high energy density, and low or zero emissions.
{"title":"Exergy analysis of NEXA™ PEM fuel cell module","authors":"E. Uyanga, G. Sevjidsuren, B. Bumaa, D. Sangaa, P. Altantsog, Uyanga Enkhnaran, Sevjidsuren Galsan","doi":"10.1109/IFOST.2011.6021017","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021017","url":null,"abstract":"Proton exchange membrane fuel cells (PEMFCs), as clean energy - converting devices, have been attracting enormous research interest as due to their high efficiency, high energy density, and low or zero emissions.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86050334","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021075
T. Minh, A. Shmoilov
For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed.
几年来，托木斯克理工大学已经开发了电网继电保护技术效率的概率方法和算法。
{"title":"Using the criterion of technical efficiency for set-up of line distance relay protection","authors":"T. Minh, A. Shmoilov","doi":"10.1109/IFOST.2011.6021075","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021075","url":null,"abstract":"For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88519540","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021028
D. Sodnomdorj, M. Narantuya, S. Uuganbayar
In this report we studied methodology and algorithms of optimizing various matters of power system regime under fuzzy objective circumstances. We also developed fuzzy model of 6–10 kV distribution power network's estimated energy loss level and its fuzzy optimization issues.
{"title":"Optimization of power system regime under fuzzy (ambiguous) objective circumstances","authors":"D. Sodnomdorj, M. Narantuya, S. Uuganbayar","doi":"10.1109/IFOST.2011.6021028","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021028","url":null,"abstract":"In this report we studied methodology and algorithms of optimizing various matters of power system regime under fuzzy objective circumstances. We also developed fuzzy model of 6–10 kV distribution power network's estimated energy loss level and its fuzzy optimization issues.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87812973","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6020970
Junguo Gao, Lili Li, N. Guo, Wei Wang, Xiaohong Zhang
The power cable is an important component in the power system, and crosslinked polyethylene is widely applied to power cables, electrical tree of XLPE is a troubled one of the reasons widely used XLPE. In the paper crosslinked polyethylene/montmorillonite composites were prepared by peroxide crosslinking method and melting intercalation process, and the processes of electrical tree in initiation and growth were studied by the test system of electrical tree. The results showed when the montmorillonite (MMT) content was the same; the electrical trees induced rate of XLPE/18-MMT-3 is lowest. It showed that montmorillonites treated with different modifiers were impact on property of resisting electrical tree. The property of resisting electrical tree in XLPE/MMT composites was the best, when MMT content was 1%, and that property of resisting electrical tree was improved, when the content of MMT was appropriate.
{"title":"Investigation on property of electrical tree in crosslinked polyethylene/montmorillonite composites","authors":"Junguo Gao, Lili Li, N. Guo, Wei Wang, Xiaohong Zhang","doi":"10.1109/IFOST.2011.6020970","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6020970","url":null,"abstract":"The power cable is an important component in the power system, and crosslinked polyethylene is widely applied to power cables, electrical tree of XLPE is a troubled one of the reasons widely used XLPE. In the paper crosslinked polyethylene/montmorillonite composites were prepared by peroxide crosslinking method and melting intercalation process, and the processes of electrical tree in initiation and growth were studied by the test system of electrical tree. The results showed when the montmorillonite (MMT) content was the same; the electrical trees induced rate of XLPE/18-MMT-3 is lowest. It showed that montmorillonites treated with different modifiers were impact on property of resisting electrical tree. The property of resisting electrical tree in XLPE/MMT composites was the best, when MMT content was 1%, and that property of resisting electrical tree was improved, when the content of MMT was appropriate.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83125107","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021041
Y. Ling, Sun Huilin, Yuan Huijuan
With the development of the gear measurement technology, there are more and more profile error measuring methods. In this paper, using measuring theory of profile error of gear measuring center, we study the rectangular coordinate measuring method of profile error. The eccentricity error is processed by the coordinate transformation and Least Squares. The experimental results show that the method is feasible and eccentric error is effectively compensated.
{"title":"A study of a gear profile measuring method using gear measurement center","authors":"Y. Ling, Sun Huilin, Yuan Huijuan","doi":"10.1109/IFOST.2011.6021041","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021041","url":null,"abstract":"With the development of the gear measurement technology, there are more and more profile error measuring methods. In this paper, using measuring theory of profile error of gear measuring center, we study the rectangular coordinate measuring method of profile error. The eccentricity error is processed by the coordinate transformation and Least Squares. The experimental results show that the method is feasible and eccentric error is effectively compensated.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77212541","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021244
C. Shi, Huiming Wang, Fancheng Yin
This paper models the monthly rainfall series by SARIMA and spectrum methods. The hidden periodicities of unspecified frequency are resolved by periodogram, Fisher's test and Kolmogorov-Simirnov test. Then the presence of a non-sinusoidal periodic component with specified integer-value period is confirmed. For comparison, SARIMA models are also established for prediction.
{"title":"Monthly rainfall forecasting model with hidden periodicities","authors":"C. Shi, Huiming Wang, Fancheng Yin","doi":"10.1109/IFOST.2011.6021244","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021244","url":null,"abstract":"This paper models the monthly rainfall series by SARIMA and spectrum methods. The hidden periodicities of unspecified frequency are resolved by periodogram, Fisher's test and Kolmogorov-Simirnov test. Then the presence of a non-sinusoidal periodic component with specified integer-value period is confirmed. For comparison, SARIMA models are also established for prediction.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82836759","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}
Pub Date : 2011-09-15DOI: 10.1109/IFOST.2011.6021258
D. Zheng, Zhong-lin Zhang, Shijie Zhu, Xiuquan Zhai, Dawei Zhao
in this paper, the short gap discharge of electrode coverage was simulated numerically. The one dimensional and self-consistent fluid model of gas discharge was established which is composed by the electron and ion continuity and momentum transfer equations, and the nonlinear equations were solved by using the SG algorithm. The results showed that the short gap discharge of electrode coverage behaves the typical nonlinear characteristic such as Hopf bifurcation and Chaos. Two ways leading to Chaos have been found by changing discharge conditions, one is quasi-period and the other is double-period. Seemingly random discharge may reveal the hidden simple laws, through studying nonlinear phenomena of the short gap discharge of electrode coverage, especially the phenomena of Chaos to find out the common law, which is generally followed by complex issues.
{"title":"Chaos evolution of short-gap discharge under dielectric-covered electrodes","authors":"D. Zheng, Zhong-lin Zhang, Shijie Zhu, Xiuquan Zhai, Dawei Zhao","doi":"10.1109/IFOST.2011.6021258","DOIUrl":"https://doi.org/10.1109/IFOST.2011.6021258","url":null,"abstract":"in this paper, the short gap discharge of electrode coverage was simulated numerically. The one dimensional and self-consistent fluid model of gas discharge was established which is composed by the electron and ion continuity and momentum transfer equations, and the nonlinear equations were solved by using the SG algorithm. The results showed that the short gap discharge of electrode coverage behaves the typical nonlinear characteristic such as Hopf bifurcation and Chaos. Two ways leading to Chaos have been found by changing discharge conditions, one is quasi-period and the other is double-period. Seemingly random discharge may reveal the hidden simple laws, through studying nonlinear phenomena of the short gap discharge of electrode coverage, especially the phenomena of Chaos to find out the common law, which is generally followed by complex issues.","PeriodicalId":20466,"journal":{"name":"Proceedings of 2011 6th International Forum on Strategic Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81005273","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}
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