Zhang Jian-wu, Yu Cheng-lei, Tang Bin, Ji Ying-ying
Wireless location algorithm based on TOA/TDOA has been researched and compared, and precise ranging technology based on TOA has been analyzed in this paper. In view of the existing location algorithm is always in 2-dimension form, Chan algorithm has been concluded in 3-dimension form and a 3-dimension location method based on TOA is proposed. The method transforms the nonlinear location equation into linear form by using initialization estimation coming from two-step weighed least square, then calculates the location estimation. The method is simple and precise. The simulation about it is given to show its theoretic value.
{"title":"Chan Location Algorithm Application in 3-Dimension Space Location","authors":"Zhang Jian-wu, Yu Cheng-lei, Tang Bin, Ji Ying-ying","doi":"10.1109/CCCM.2008.76","DOIUrl":"https://doi.org/10.1109/CCCM.2008.76","url":null,"abstract":"Wireless location algorithm based on TOA/TDOA has been researched and compared, and precise ranging technology based on TOA has been analyzed in this paper. In view of the existing location algorithm is always in 2-dimension form, Chan algorithm has been concluded in 3-dimension form and a 3-dimension location method based on TOA is proposed. The method transforms the nonlinear location equation into linear form by using initialization estimation coming from two-step weighed least square, then calculates the location estimation. The method is simple and precise. The simulation about it is given to show its theoretic value.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122689803","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}
Baogang Chen, Chengbo Huang, Yong Xu, Jinlong Hu, Shouqiang Liu
In this study, we measure, model and analyze characteristics of traffic flows of P2P application Maze by capturing real traffic from an operational network. Maze is a P2P file-sharing system with a centralized, cluster-based search engine and a social network among peers. We report the models for flow arrival interval, flow size, flow duration and flow rate of Maze traffic flows. With the growing of peer-to-peer traffic, understanding traffic models and characteristics of peer-to-peer applications will benefit network design, traffic control procedure as well as network simulation.
{"title":"Measurement and Analysis of Peer-to-Peer Application Traffic Characteristics","authors":"Baogang Chen, Chengbo Huang, Yong Xu, Jinlong Hu, Shouqiang Liu","doi":"10.1109/CCCM.2008.382","DOIUrl":"https://doi.org/10.1109/CCCM.2008.382","url":null,"abstract":"In this study, we measure, model and analyze characteristics of traffic flows of P2P application Maze by capturing real traffic from an operational network. Maze is a P2P file-sharing system with a centralized, cluster-based search engine and a social network among peers. We report the models for flow arrival interval, flow size, flow duration and flow rate of Maze traffic flows. With the growing of peer-to-peer traffic, understanding traffic models and characteristics of peer-to-peer applications will benefit network design, traffic control procedure as well as network simulation.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131479174","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}
By combining visual preview kinematics, dynamic equation of steering system and 2-DOF steering dynamistic model of 4WS, we establish the two degree of freedom model of four-wheel steering vehicle. And then the switching hyper plane is designed by applying the optimal control theory. During the change of parameter is little, 4WS steering performance is carried out by adopting sliding variable structure controller. To improve the steering performance of 4WS, especially state variables convergent velocity, Kalman filter for 4WS is designed. And the robust optimal controller is designed for model and parameter is uncertainty. The simulation results show that the controller designed by the proposed method has good robustness; it can easily attenuate the change and uncertainty of model.
{"title":"Dynamics Simulation on Control Technology for 4WS Vehicle Steering Performance","authors":"Zhang Rong-hui, Jia Hong-guang, Chen Tao","doi":"10.1109/CCCM.2008.57","DOIUrl":"https://doi.org/10.1109/CCCM.2008.57","url":null,"abstract":"By combining visual preview kinematics, dynamic equation of steering system and 2-DOF steering dynamistic model of 4WS, we establish the two degree of freedom model of four-wheel steering vehicle. And then the switching hyper plane is designed by applying the optimal control theory. During the change of parameter is little, 4WS steering performance is carried out by adopting sliding variable structure controller. To improve the steering performance of 4WS, especially state variables convergent velocity, Kalman filter for 4WS is designed. And the robust optimal controller is designed for model and parameter is uncertainty. The simulation results show that the controller designed by the proposed method has good robustness; it can easily attenuate the change and uncertainty of model.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133187984","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}
According to 3G standard, the communicating bandwidth of mobile devices is 2Mbps, which makes it possible to realize 3G faced P2P e-commerce service among mobile devices. In this paper, the author mainly solved the problem of how to apply mobile P2P technology into modern e-commerce platform. Then, introduced the actuality of modern e-commerce in use and the system architecture of a 3G faced mobile P2P e-commerce system. At last, expatiate the business flow of the new platform.
{"title":"EPMD: A 3G Faced P2P E-Commerce Platform for Mobile Devices","authors":"Lei Wang","doi":"10.1109/CCCM.2008.193","DOIUrl":"https://doi.org/10.1109/CCCM.2008.193","url":null,"abstract":"According to 3G standard, the communicating bandwidth of mobile devices is 2Mbps, which makes it possible to realize 3G faced P2P e-commerce service among mobile devices. In this paper, the author mainly solved the problem of how to apply mobile P2P technology into modern e-commerce platform. Then, introduced the actuality of modern e-commerce in use and the system architecture of a 3G faced mobile P2P e-commerce system. At last, expatiate the business flow of the new platform.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134121741","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}
An observation quality evaluation system for onboard dual frequency GPS is presented in this paper. We investigate how to evaluate the quality of onboard dual frequency kinematic GPS receiver using in-flight observations, and provide several indices of onboard observation quality evaluation. To come over high dynamic characteristics of onboard observations, we design an efficient method of outlier elimination and cycle slip detection. Then via linear combination of original observations, the kinematic observations noise is extracted, and the observation quality is evaluated. Further more, we provide an algorithm to compute the correlation of different types of observations, and analyze the relation between the observation quality and sightline direction. We achieve a series of reliable quality evaluation results by experiments on the data from CHAMP satellite and provide reasonable explanation. The results of CHAMP data analysis contribute to better understanding of receivers and applications of GPS.
{"title":"Quality Evaluation of Onboard Dual Frequency Kinematic GPS Observations","authors":"De-feng Gu, Lei Sun, Dong-yun Yi","doi":"10.1109/CCCM.2008.133","DOIUrl":"https://doi.org/10.1109/CCCM.2008.133","url":null,"abstract":"An observation quality evaluation system for onboard dual frequency GPS is presented in this paper. We investigate how to evaluate the quality of onboard dual frequency kinematic GPS receiver using in-flight observations, and provide several indices of onboard observation quality evaluation. To come over high dynamic characteristics of onboard observations, we design an efficient method of outlier elimination and cycle slip detection. Then via linear combination of original observations, the kinematic observations noise is extracted, and the observation quality is evaluated. Further more, we provide an algorithm to compute the correlation of different types of observations, and analyze the relation between the observation quality and sightline direction. We achieve a series of reliable quality evaluation results by experiments on the data from CHAMP satellite and provide reasonable explanation. The results of CHAMP data analysis contribute to better understanding of receivers and applications of GPS.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133380111","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}
The bilingual translation individual search engine is a kind of Web application program which integrated the functions of bilingual translation and personalized search engine. This paper introduced the theory of bilingual translation and personalized search engine, and then discussed the design and implementation of personalized search engine on bilingual translation.
{"title":"The Design and Implementation of Personalized Search Engine Based on Bilingual Translation","authors":"Li Dongfei, Duan Jianguo","doi":"10.1109/CCCM.2008.19","DOIUrl":"https://doi.org/10.1109/CCCM.2008.19","url":null,"abstract":"The bilingual translation individual search engine is a kind of Web application program which integrated the functions of bilingual translation and personalized search engine. This paper introduced the theory of bilingual translation and personalized search engine, and then discussed the design and implementation of personalized search engine on bilingual translation.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134098565","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}
In this paper, applying the theory of stochastic processes and interacting particle systems, including stopping time theory and the stochastic voter model, we model a financial price model that contains two types of investors, and we use this financial model to describe the behavior and fluctuations of a stock price process in a stock market. In the financial model, besides the professional investors, we also consider the general investors or nonprofessional investors, where the stopping time and the voter model are applied to model and study the statistical properties of investment of the nonprofessional investors. Further, we discuss the valuation and hedging of European contingent claims for this price process model.
{"title":"Stock Prices Fluctuations and Analytical Valuation of Contingent Claims by Stochastic Interacting Systems","authors":"Jun Wang, Fang Zhao, C. Wei","doi":"10.1109/CCCM.2008.188","DOIUrl":"https://doi.org/10.1109/CCCM.2008.188","url":null,"abstract":"In this paper, applying the theory of stochastic processes and interacting particle systems, including stopping time theory and the stochastic voter model, we model a financial price model that contains two types of investors, and we use this financial model to describe the behavior and fluctuations of a stock price process in a stock market. In the financial model, besides the professional investors, we also consider the general investors or nonprofessional investors, where the stopping time and the voter model are applied to model and study the statistical properties of investment of the nonprofessional investors. Further, we discuss the valuation and hedging of European contingent claims for this price process model.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115360305","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}
Data warehouse and online analytical processing (OLAP) are two significant information technology (IT) strategies. To commercial enterprises, merchandise sales play important and special role. With the market competition getting fierce, managers see information as a critical resource and require methods that let them exploit it for competitive advantage. The development of data warehouse and OLAP make it possible to use these technologies to help managers' analysis and decision making. In this study, we take the case of a drugs retail enterprise, propose a drugs sales data cube and attempt to apply it to drugs sales data OLAP analysis. We give an OLAP structure based on Web. This paper provides the method to realize OLAP data analysis from Web pages through bedding office Web components, and realizes the OLAP multidimensional data analyses.
{"title":"Effectiveness of OLAP-Based Sales Analysis in Retail Enterprises","authors":"Chun-hua Ju, Minghua Han","doi":"10.1109/CCCM.2008.131","DOIUrl":"https://doi.org/10.1109/CCCM.2008.131","url":null,"abstract":"Data warehouse and online analytical processing (OLAP) are two significant information technology (IT) strategies. To commercial enterprises, merchandise sales play important and special role. With the market competition getting fierce, managers see information as a critical resource and require methods that let them exploit it for competitive advantage. The development of data warehouse and OLAP make it possible to use these technologies to help managers' analysis and decision making. In this study, we take the case of a drugs retail enterprise, propose a drugs sales data cube and attempt to apply it to drugs sales data OLAP analysis. We give an OLAP structure based on Web. This paper provides the method to realize OLAP data analysis from Web pages through bedding office Web components, and realizes the OLAP multidimensional data analyses.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114630906","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}
Large scale networks are usually hierarchically structured for the reason of scalability and security. Topology aggregation is introduced for the state information reduction of domains, but it also brings distortion of the original state information. The tradeoff between information reduction and distortion is the key to topology aggregation. In this paper, a new topology aggregation algorithm called SA approach is presented for hierarchical networks with delay and bandwidth constraints. This approach uses an approximation staircase generated by a line segment to represent the QoS supported area for the purpose of representing the parameters of a logical link in the full-mesh; furthermore, the spanning tree and star topology are employed to compress the full-mesh. Experimental results show that the new topology aggregation method can reduce more information distortion and achieve a better tradeoff between information reduction and accuracy than existing approaches.
{"title":"A New Topology Aggregation Algorithm in Hierarchical Networks","authors":"Jingjun Zhang, Yuanbin Han, Liguo Wang","doi":"10.1109/CCCM.2008.128","DOIUrl":"https://doi.org/10.1109/CCCM.2008.128","url":null,"abstract":"Large scale networks are usually hierarchically structured for the reason of scalability and security. Topology aggregation is introduced for the state information reduction of domains, but it also brings distortion of the original state information. The tradeoff between information reduction and distortion is the key to topology aggregation. In this paper, a new topology aggregation algorithm called SA approach is presented for hierarchical networks with delay and bandwidth constraints. This approach uses an approximation staircase generated by a line segment to represent the QoS supported area for the purpose of representing the parameters of a logical link in the full-mesh; furthermore, the spanning tree and star topology are employed to compress the full-mesh. Experimental results show that the new topology aggregation method can reduce more information distortion and achieve a better tradeoff between information reduction and accuracy than existing approaches.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114758801","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}
For electric power business decision, the open Web is an important resource of knowledge. Unfortunately, traditional methods of knowledge acquiring, representing and organizing can not satisfy the requirements of semantic to support intelligent decision. Arming to these, a semantic platform oriented business intelligence named SP4BI is proposed by this paper, then two key technologies, model of Web knowledge representation and automatic algorithm of ontology acquiring, are illustrated. Knowledge on the Web are time-related and context-related, these properties are all be considered in representation model of Web knowledge. Meanwhile, the experiments of automatic acquiring electric power ontology show the validity of extracting properties and relations of concepts. Compared with existing methods, SP4BI platform provides a semantic supporting, and is a fundamental of machine reading and automatic reasoning.
{"title":"Research on Semantic Business Platform for Electric Power System","authors":"Sheng Jia-gen, Liu Sifeng","doi":"10.1109/CCCM.2008.357","DOIUrl":"https://doi.org/10.1109/CCCM.2008.357","url":null,"abstract":"For electric power business decision, the open Web is an important resource of knowledge. Unfortunately, traditional methods of knowledge acquiring, representing and organizing can not satisfy the requirements of semantic to support intelligent decision. Arming to these, a semantic platform oriented business intelligence named SP4BI is proposed by this paper, then two key technologies, model of Web knowledge representation and automatic algorithm of ontology acquiring, are illustrated. Knowledge on the Web are time-related and context-related, these properties are all be considered in representation model of Web knowledge. Meanwhile, the experiments of automatic acquiring electric power ontology show the validity of extracting properties and relations of concepts. Compared with existing methods, SP4BI platform provides a semantic supporting, and is a fundamental of machine reading and automatic reasoning.","PeriodicalId":326534,"journal":{"name":"2008 ISECS International Colloquium on Computing, Communication, Control, and Management","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115319415","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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