Nowadays in the field of communication,leaky coaxial cables (LCX) are widely used and their performances always determine the capability of a whole communication system.Considering the testing characteristics of LCX,the proposed testing system is designed based on LabVIEW,a developing tool of virtual instrument. With the help of DAQ module and GPIB technology, the hardware part with high efficiency is used to acquire the testing characteristics of LCX such as coupling loss etc.Furthermore considering the tolerance caused by either test site or test equipment,the system also offers correcting compensation to improve the accuracy of the test result.The software offers a user-friendly interface,which provides both data management and data analyses for LCX samples.
{"title":"Leaky Coaxial Cable Testing System","authors":"Yiwen Tang, Chang Huang, Wenquan Gu, Xiaoying Fang","doi":"10.1109/DBTA.2010.5658962","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5658962","url":null,"abstract":"Nowadays in the field of communication,leaky coaxial cables (LCX) are widely used and their performances always determine the capability of a whole communication system.Considering the testing characteristics of LCX,the proposed testing system is designed based on LabVIEW,a developing tool of virtual instrument. With the help of DAQ module and GPIB technology, the hardware part with high efficiency is used to acquire the testing characteristics of LCX such as coupling loss etc.Furthermore considering the tolerance caused by either test site or test equipment,the system also offers correcting compensation to improve the accuracy of the test result.The software offers a user-friendly interface,which provides both data management and data analyses for LCX samples.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122457614","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659024
Luyang Zhang, Ruonan Rao
In open pervasive computing environment, various devices and applications are frequently changeable. It is hard to authenticate strange entities for lack of centralized management authority. In order to solve access control problem in open pervasive environment, a trust based access control framework is introduced in this paper, and a corresponding prototype system is designed, implemented and integrated into R-OSGi, which is a widely used middleware in pervasive environment. The system is based on sunxacml and employs Pervasive Trust Management Model as well as XACML based access control policy, supports dynamic trust degree evaluation and trust degree based decision-making for authorization.
{"title":"Trust Based Access Control Framework for R-OSGi","authors":"Luyang Zhang, Ruonan Rao","doi":"10.1109/DBTA.2010.5659024","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659024","url":null,"abstract":"In open pervasive computing environment, various devices and applications are frequently changeable. It is hard to authenticate strange entities for lack of centralized management authority. In order to solve access control problem in open pervasive environment, a trust based access control framework is introduced in this paper, and a corresponding prototype system is designed, implemented and integrated into R-OSGi, which is a widely used middleware in pervasive environment. The system is based on sunxacml and employs Pervasive Trust Management Model as well as XACML based access control policy, supports dynamic trust degree evaluation and trust degree based decision-making for authorization.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127651972","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659115
Meng Cui, Y. Zhai
In view of the characteristics of CNPC(China National Petroleum Corporation) well history management system and existing problems in drilling information,such as the magnitude of drilling data,complicated relations,inhomogeneous distribution,heterogeneity,autonomy,etc,a new integrated scheme based on Ontology is proposed for heterogeneous drilling data. Taking advantage of semantic integration,the new scheme can completely eliminate data heterogeneity among data sources and realize the most effective integration and sharing of different well history data for each oil and gas field.This paper elaborates the work principle and implementation procedure of the new scheme,establishes the fundamental model for bulk database of drilling field based on ontology,and achieves correlative mapping from oil field's relational databases to drilling field's globe ontology. Case analysis confirms that this scheme is effective and feasible in heterogeneous data integration field.
{"title":"Applied Research on the Integrated Scheme of Well History Data Based on Ontology","authors":"Meng Cui, Y. Zhai","doi":"10.1109/DBTA.2010.5659115","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659115","url":null,"abstract":"In view of the characteristics of CNPC(China National Petroleum Corporation) well history management system and existing problems in drilling information,such as the magnitude of drilling data,complicated relations,inhomogeneous distribution,heterogeneity,autonomy,etc,a new integrated scheme based on Ontology is proposed for heterogeneous drilling data. Taking advantage of semantic integration,the new scheme can completely eliminate data heterogeneity among data sources and realize the most effective integration and sharing of different well history data for each oil and gas field.This paper elaborates the work principle and implementation procedure of the new scheme,establishes the fundamental model for bulk database of drilling field based on ontology,and achieves correlative mapping from oil field's relational databases to drilling field's globe ontology. Case analysis confirms that this scheme is effective and feasible in heterogeneous data integration field.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115032305","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659056
Chuanfeng Bie, Yejuan Xia, Jing Xu
In this paper a data visualization components system was designed. The administrative division component, the city grid component, the statistics analysis component and the custom component were provided in the system to demonstrate the multimedia data. Various types of data and graphics could be auto analyzed by the adaptive ferry engine which was the key function in this system, then the data graphical presentation preferred list was shown to the users. So a data collection, data analysis, decision-making platform was constructed. An intelligent combination mode about the data and the data visualization was realized in this system.
{"title":"Integration and Design of a Data Visualization Components System","authors":"Chuanfeng Bie, Yejuan Xia, Jing Xu","doi":"10.1109/DBTA.2010.5659056","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659056","url":null,"abstract":"In this paper a data visualization components system was designed. The administrative division component, the city grid component, the statistics analysis component and the custom component were provided in the system to demonstrate the multimedia data. Various types of data and graphics could be auto analyzed by the adaptive ferry engine which was the key function in this system, then the data graphical presentation preferred list was shown to the users. So a data collection, data analysis, decision-making platform was constructed. An intelligent combination mode about the data and the data visualization was realized in this system.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114775689","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659055
Qun Li, Xin-yuan Huang
Web documents are enormous. Text clustering is to place the documents with the most words in common into the same cluster. Thus the web search engine can structure the large result set for a certain quest. In this article, we study three kinds of clustering algorithms, prototype based, density based and hierarchical clustering algorithms. We compare two typical algorithms, K-medoids and DBSCAN. The results show that the K-medoids is sensitive to the initial center point and the DBSCAN has a better performance.
{"title":"Research on Text Clustering Algorithms","authors":"Qun Li, Xin-yuan Huang","doi":"10.1109/DBTA.2010.5659055","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659055","url":null,"abstract":"Web documents are enormous. Text clustering is to place the documents with the most words in common into the same cluster. Thus the web search engine can structure the large result set for a certain quest. In this article, we study three kinds of clustering algorithms, prototype based, density based and hierarchical clustering algorithms. We compare two typical algorithms, K-medoids and DBSCAN. The results show that the K-medoids is sensitive to the initial center point and the DBSCAN has a better performance.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117105654","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659031
Jing Lee, Ching-Hsing Pei
The most widely used algorithms for graph drawing are force-directed algorithms. We should modify a hybrid force model that is coupling a traditional spring force model and a novel repulsive force model will be proposed to solve the graph drawing problems in 2-D space. Especially, regular triangle drawing frame can be applied to binary tree drawing problems that on an important contribution to computer science. And apply circle drawing frame to normal graph drawing problems, we get satisfactory and aesthetic criteria graphics
{"title":"Graph Drawing by Force-Directed Method in Mirror Frames","authors":"Jing Lee, Ching-Hsing Pei","doi":"10.1109/DBTA.2010.5659031","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659031","url":null,"abstract":"The most widely used algorithms for graph drawing are force-directed algorithms. We should modify a hybrid force model that is coupling a traditional spring force model and a novel repulsive force model will be proposed to solve the graph drawing problems in 2-D space. Especially, regular triangle drawing frame can be applied to binary tree drawing problems that on an important contribution to computer science. And apply circle drawing frame to normal graph drawing problems, we get satisfactory and aesthetic criteria graphics","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117305192","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}
To improve the reservoir long-term runoff forecasting accuracy. Adaptive regulation ant colony system algorithm (ARACS) is proposed. The forecast model is set up by using an adaptive regulation ant colony system algorithm and the radial basis function (RBF) neural network combined to form ARACS-RBF hybrid algorithm. Form the reservoir long-term runoff forecast model based on the hybrid algorithm. Then carry out the reservoir long-term runoff forecast by using the method and history runoff data. The result shows the convergence of method is faster and forecast accuracy is more accurate than that of the traditional ant colony system algorithm-RBF neural network and RBF neural network. The method improves forecast accuracy and improves the RBF neural network generalization capacity; it has a high computational precision, and in 98% of confidence level the average percentage error is not more than 6%. The hybrid algorithm can be used efficaciously in long-term runoff forecasting of the reservoir and river.
{"title":"Adaptive Regulation Ant Colony System Algorithm - Radial Basis Function Neural Network Model and Its Application","authors":"Jizhong Bai, B. Shi, Minquan Feng, Jianming Yang, Likun Zhou, Xinhua Yu","doi":"10.1109/DBTA.2010.5659007","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659007","url":null,"abstract":"To improve the reservoir long-term runoff forecasting accuracy. Adaptive regulation ant colony system algorithm (ARACS) is proposed. The forecast model is set up by using an adaptive regulation ant colony system algorithm and the radial basis function (RBF) neural network combined to form ARACS-RBF hybrid algorithm. Form the reservoir long-term runoff forecast model based on the hybrid algorithm. Then carry out the reservoir long-term runoff forecast by using the method and history runoff data. The result shows the convergence of method is faster and forecast accuracy is more accurate than that of the traditional ant colony system algorithm-RBF neural network and RBF neural network. The method improves forecast accuracy and improves the RBF neural network generalization capacity; it has a high computational precision, and in 98% of confidence level the average percentage error is not more than 6%. The hybrid algorithm can be used efficaciously in long-term runoff forecasting of the reservoir and river.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116167152","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5658991
Zheng Li, Shoulian Tang
Based on 287 samples collected from four universities, as well as three virtual communities of online shops in China, the author analyzed the impacts of review system on online shopping intention. A model reflecting characteristics of e-commerce based on TAM was created. Four features of review system (Quality, Quantity, Accuracy, and Interactive) were chose as independent variables, while Usefulness, Ease of use, and Trust were chose as intermediate variables, and Intention was the dependent variable. 9 hypotheses were proved while 12 were presented. The results show that Quality, Quantity have significant influences on Usefulness of review system, while Quality, Interactive have significant influences on both Ease of use of review system and the Trust of online shoppers toward review system. This research also proved that Usefulness, Ease of use, and Trust of review system have significant impacts on online shoppers' intention for transaction online. The implication of this research for e-retailers is that they should use review system of their online shops effectively, thus improve customers' online shopping intention.
基于从四所大学和三个中国网上商店虚拟社区收集的287个样本，作者分析了评论制度对网上购物意愿的影响。建立了一个基于TAM的反映电子商务特征的模型。选取评价系统的四个特征(Quality, Quantity, Accuracy, Interactive)作为自变量，选取Usefulness, Ease of use, and Trust作为中间变量，Intention作为因变量。9个假设被证实，12个假设被提出。结果表明，质量、数量对评价系统的有用性有显著影响，质量、互动性对评价系统的易用性和网购者对评价系统的信任度都有显著影响。本研究也证明评论系统的有用性、易用性和信任度对网购者的网上交易意愿有显著影响。本研究对电子零售商的启示是，他们应该有效地利用网上商店的评论制度，从而提高顾客的网上购物意愿。
{"title":"An Empirical Research of Impacts of Review System on Online Shoppers' Intention Based on TAM","authors":"Zheng Li, Shoulian Tang","doi":"10.1109/DBTA.2010.5658991","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5658991","url":null,"abstract":"Based on 287 samples collected from four universities, as well as three virtual communities of online shops in China, the author analyzed the impacts of review system on online shopping intention. A model reflecting characteristics of e-commerce based on TAM was created. Four features of review system (Quality, Quantity, Accuracy, and Interactive) were chose as independent variables, while Usefulness, Ease of use, and Trust were chose as intermediate variables, and Intention was the dependent variable. 9 hypotheses were proved while 12 were presented. The results show that Quality, Quantity have significant influences on Usefulness of review system, while Quality, Interactive have significant influences on both Ease of use of review system and the Trust of online shoppers toward review system. This research also proved that Usefulness, Ease of use, and Trust of review system have significant impacts on online shoppers' intention for transaction online. The implication of this research for e-retailers is that they should use review system of their online shops effectively, thus improve customers' online shopping intention.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124674981","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659051
Minjing Xiao
A kind of design which is about MODBUS protocol converter has been introduced in this paper.We mainly used P89C669 Microcontroller to realize the data conversion between the main control equipment of MODBUS Net and Remote Terminal Unit (RTU).And eventually,we have used this kind of protocol converter to communicate between PLC and MODBUS Net which used to monitor computer system automatically.The whole system is used in 220KV main transformer's air-cooled control of Electric Power system.
{"title":"MODBUS Protocol Converter Which Used in 220KV Main Transformer's Air-Cooled Control","authors":"Minjing Xiao","doi":"10.1109/DBTA.2010.5659051","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659051","url":null,"abstract":"A kind of design which is about MODBUS protocol converter has been introduced in this paper.We mainly used P89C669 Microcontroller to realize the data conversion between the main control equipment of MODBUS Net and Remote Terminal Unit (RTU).And eventually,we have used this kind of protocol converter to communicate between PLC and MODBUS Net which used to monitor computer system automatically.The whole system is used in 220KV main transformer's air-cooled control of Electric Power system.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124786098","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 : 2010-12-06DOI: 10.1109/DBTA.2010.5659011
Yongxuan Lai, Ziyu Lin, Xing Gao
The iceberg join query is an important type of query which explores the relationships among the sensing data in wireless sensor network.It outputs the joined tuples whose aggregated results are above some threshold constraint. As the number of above-threshold results is often very small compared to the amount of sensing data,the iceberg join query is a challenging query in the resource-constraint sensor network. In this paper,we propose a new algorithm called SRJA for the iceberg join processing in the wireless sensor network. SRJA is output sensitive, and by"pushing"the iceberg constraint into the joining regions,it filters out large number of unsatisfied tuples, saving lots of tuple transmissions.Experiments based on simulations verify the performance efficiency of our algorithm.
{"title":"SRJA: Iceberg Join Processing in Wireless Sensor Networks","authors":"Yongxuan Lai, Ziyu Lin, Xing Gao","doi":"10.1109/DBTA.2010.5659011","DOIUrl":"https://doi.org/10.1109/DBTA.2010.5659011","url":null,"abstract":"The iceberg join query is an important type of query which explores the relationships among the sensing data in wireless sensor network.It outputs the joined tuples whose aggregated results are above some threshold constraint. As the number of above-threshold results is often very small compared to the amount of sensing data,the iceberg join query is a challenging query in the resource-constraint sensor network. In this paper,we propose a new algorithm called SRJA for the iceberg join processing in the wireless sensor network. SRJA is output sensitive, and by\"pushing\"the iceberg constraint into the joining regions,it filters out large number of unsatisfied tuples, saving lots of tuple transmissions.Experiments based on simulations verify the performance efficiency of our algorithm.","PeriodicalId":320509,"journal":{"name":"2010 2nd International Workshop on Database Technology and Applications","volume":"110 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113945420","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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