Searching in complex networks is different from random and regular networks for existing long range connections and hub nodes. So the research on structure and characters of networks will improve the search speed and lower the load of nodes. Though getting the shortest paths is the best choice, in a real network, it is impossible for a node to get global information. For example, there is not a node that has the whole network information in a peer-to-peer network. The shortest paths are available, but the cost, especially in a dynamical network, will be high. The paper first discusses the main characters of complex network and the existing searching strategies with local information, and then defines and analyzes maximum diffuse nodes. After evaluating the stability of maximum diffuse nodes in dynamical network, the paper designs searching strategy based on maximum diffuse principle. To validate the idea, we numerically simulate the most characteristic complex network model of Barabási and Albert (BA model), and analyze the average path, the network average load and every node’s load in different initial parameter values. The result indicates the new algorithm is effective not only in finding average path but also in load balance.
{"title":"Searching with Local Information in Complex Networks","authors":"Tao Zhang, Bailiang Cheng, Anquan Jie","doi":"10.1109/ETCS.2009.493","DOIUrl":"https://doi.org/10.1109/ETCS.2009.493","url":null,"abstract":"Searching in complex networks is different from random and regular networks for existing long range connections and hub nodes. So the research on structure and characters of networks will improve the search speed and lower the load of nodes. Though getting the shortest paths is the best choice, in a real network, it is impossible for a node to get global information. For example, there is not a node that has the whole network information in a peer-to-peer network. The shortest paths are available, but the cost, especially in a dynamical network, will be high. The paper first discusses the main characters of complex network and the existing searching strategies with local information, and then defines and analyzes maximum diffuse nodes. After evaluating the stability of maximum diffuse nodes in dynamical network, the paper designs searching strategy based on maximum diffuse principle. To validate the idea, we numerically simulate the most characteristic complex network model of Barabási and Albert (BA model), and analyze the average path, the network average load and every node’s load in different initial parameter values. The result indicates the new algorithm is effective not only in finding average path but also in load balance.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115654234","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}
Collaborative learning can effectively improve the learning efficiency of learners rather individual learning. Activity theory is a theoretical framework for analyzing human practices as developmental processes with both individual and social levels interlinked at the same time. Learn is a activity, in this paper, we analyze the composition of collaborative network learning activity including goals, subjects, objects , tools and rules. finally ,We design a multi-agent system for collaborative network learning , structure and function of every type agent are discussed.
{"title":"A Multi-Agent System Based on Activity Theory for Collaborative Network Learning","authors":"Xu Liang, Ruo Wang, G. Bai","doi":"10.1109/ETCS.2009.97","DOIUrl":"https://doi.org/10.1109/ETCS.2009.97","url":null,"abstract":"Collaborative learning can effectively improve the learning efficiency of learners rather individual learning. Activity theory is a theoretical framework for analyzing human practices as developmental processes with both individual and social levels interlinked at the same time. Learn is a activity, in this paper, we analyze the composition of collaborative network learning activity including goals, subjects, objects , tools and rules. finally ,We design a multi-agent system for collaborative network learning , structure and function of every type agent are discussed.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"12 46","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120927815","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}
Science research project selection is an important task for organizations with project management. It is a complicated multi-stage decision-making process, which involves groups of decision makers. Current research on research project selection mainly focuses on mathematical decision models and their applications, but ignores the organizational aspect of the decision-making process. This paper proposes an intelligent decision support system (IDSS) for research project selection. According to the evaluation information being characteristic of uncertain, fuzzy and incomplete information, the D-S theory of evidence was applied to aggregate the evaluation. At same time, the IDSS mines the expert’s information from the applications to acquire the weight of experts to make the selection process more true-life. The demonstration shows the ways this method is feasible. The IDSS with this method can provide useful information for decision-making tasks in the project selection process.
{"title":"Intelligent Decision Support System and its Application in Science Research Project Selection","authors":"Wei-dong Zhu, Shi-ping Guan","doi":"10.1109/ETCS.2009.194","DOIUrl":"https://doi.org/10.1109/ETCS.2009.194","url":null,"abstract":"Science research project selection is an important task for organizations with project management. It is a complicated multi-stage decision-making process, which involves groups of decision makers. Current research on research project selection mainly focuses on mathematical decision models and their applications, but ignores the organizational aspect of the decision-making process. This paper proposes an intelligent decision support system (IDSS) for research project selection. According to the evaluation information being characteristic of uncertain, fuzzy and incomplete information, the D-S theory of evidence was applied to aggregate the evaluation. At same time, the IDSS mines the expert’s information from the applications to acquire the weight of experts to make the selection process more true-life. The demonstration shows the ways this method is feasible. The IDSS with this method can provide useful information for decision-making tasks in the project selection process.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121322506","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}
Web Services provided a new way of distributed computing that achieve the interoperability between heterogonous application through platform and language independent interfaces.The creation of value-added services by composition of existing ones is gaining a signicant momentum. Since many available Web services provide identical functionality, albeit with different Quality of Service(QoS), a selection needs to be made to determine which services are to participate in a given composite schema.So,QoS-based dynamic web services composition has now received much attention. This paper proposed the conception and definition of the compositionly, gave the expression to calculate the single service’ and the composition service’ compositionly, and added compositionly criterion to QoS model. On this basis,we design a new method to select the services which satifis user from candidate services, which can work better with little time in large number of candidate services.
{"title":"A QoS-Based Web Services Selection Method for Dynamic Web Service Composition","authors":"Z. Guoping, Zhang Huijuan, W. Zhibin","doi":"10.1109/ETCS.2009.722","DOIUrl":"https://doi.org/10.1109/ETCS.2009.722","url":null,"abstract":"Web Services provided a new way of distributed computing that achieve the interoperability between heterogonous application through platform and language independent interfaces.The creation of value-added services by composition of existing ones is gaining a signicant momentum. Since many available Web services provide identical functionality, albeit with different Quality of Service(QoS), a selection needs to be made to determine which services are to participate in a given composite schema.So,QoS-based dynamic web services composition has now received much attention. This paper proposed the conception and definition of the compositionly, gave the expression to calculate the single service’ and the composition service’ compositionly, and added compositionly criterion to QoS model. On this basis,we design a new method to select the services which satifis user from candidate services, which can work better with little time in large number of candidate services.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127089673","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}
With the wide application of high-tech such as Electronic Total Station and RTK, employment-oriented and ability at the core of Surveying and Mapping category higher vocational curriculum have to break the old system, integrate the content of traditional teaching, strengthen the High-tech teaching, highlight specialized characteristics and train the students the core skills in order to enable them to adapt to the needs of the community. In this paper, the course of ¿Measurement Technology of Electronic Total Station ¿as an example, on the basis of analysis and discussion its contents and methods of teaching, under the new situation, to explore Surveying and Mapping major of higher vocational education course.
{"title":"Reformation and Exploration of Curriculum Education in Surveying and Mapping Major of Higher Vocational Education under High-tech Environment","authors":"Zheng Chong-qi, Wang Xiao-jing, He Bao-xi","doi":"10.1109/ETCS.2009.564","DOIUrl":"https://doi.org/10.1109/ETCS.2009.564","url":null,"abstract":"With the wide application of high-tech such as Electronic Total Station and RTK, employment-oriented and ability at the core of Surveying and Mapping category higher vocational curriculum have to break the old system, integrate the content of traditional teaching, strengthen the High-tech teaching, highlight specialized characteristics and train the students the core skills in order to enable them to adapt to the needs of the community. In this paper, the course of ¿Measurement Technology of Electronic Total Station ¿as an example, on the basis of analysis and discussion its contents and methods of teaching, under the new situation, to explore Surveying and Mapping major of higher vocational education course.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127241371","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}
Collaborative Filtering (CF) is the most widely used technique for Recommender Systems. However, user similarity alone is not enough for recommendation. We propose that trust is another important issue in recommender systems. Due to data sparsity of the item ratings matrix, we may not find the similar neighbors of the active user and thus CF Recommender Systems often fails in this condition. Taking trust into consideration can alleviate those problems. We consider replacing similarity weight with trust weight by trust propagation over the trust network. And we propose that trust decreases along propagation. A comparison between MoleTrust and our trust metric-DecTrust based on Epinions.com dataset shows that our trust metric can improve the accuracy while keeping coverage.
{"title":"An Improved Trust Metric for Trust-Aware Recommender Systems","authors":"Zhi-Li Wu, Xue-li Yu, Jingyu Sun","doi":"10.1109/ETCS.2009.215","DOIUrl":"https://doi.org/10.1109/ETCS.2009.215","url":null,"abstract":"Collaborative Filtering (CF) is the most widely used technique for Recommender Systems. However, user similarity alone is not enough for recommendation. We propose that trust is another important issue in recommender systems. Due to data sparsity of the item ratings matrix, we may not find the similar neighbors of the active user and thus CF Recommender Systems often fails in this condition. Taking trust into consideration can alleviate those problems. We consider replacing similarity weight with trust weight by trust propagation over the trust network. And we propose that trust decreases along propagation. A comparison between MoleTrust and our trust metric-DecTrust based on Epinions.com dataset shows that our trust metric can improve the accuracy while keeping coverage.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127261081","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 subject investigated of this paper is major in the ECT system of 8-electrode oil-water two-phase flow, and the measuring principle is analyzed, the mathematic model of the oil-water two-phase distribution information is established based on double integral infinitesimal principle, an ECT measurement system of 8-electrode oil-water two-phase flow is set up. At the same time we present the method of image reconstruction to accomplish the concentration measurement of oil-water two-phase flow. Based on ART image-reconstruction algorithm, we present threshold value to improve quality of image reconstruction and calculating accuracy of content and the precision of reconstruction is about 1%, which can meet the need of identification of flow regime for oil-water two-phase flow.
{"title":"Design and Implementation of Hardware System for Electrical Capacitance Tomography","authors":"Yingdong Ji","doi":"10.1109/ETCS.2009.139","DOIUrl":"https://doi.org/10.1109/ETCS.2009.139","url":null,"abstract":"The subject investigated of this paper is major in the ECT system of 8-electrode oil-water two-phase flow, and the measuring principle is analyzed, the mathematic model of the oil-water two-phase distribution information is established based on double integral infinitesimal principle, an ECT measurement system of 8-electrode oil-water two-phase flow is set up. At the same time we present the method of image reconstruction to accomplish the concentration measurement of oil-water two-phase flow. Based on ART image-reconstruction algorithm, we present threshold value to improve quality of image reconstruction and calculating accuracy of content and the precision of reconstruction is about 1%, which can meet the need of identification of flow regime for oil-water two-phase flow.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127340908","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}
With the advancement of information technology and the further popularization of computer education, the undergraduate education of computer information technology is facing a new challenge. Taking into consideration the current teaching situation of this course, the Student-Oriented Role-Shift Teaching Model is constructed. Taking Carl Rogers’ non-directive teaching theory as the theoretical foundation, the teaching model partly shifts the center of teaching and learning from the teacher to students in the hope of coping with the specific conditions of China’s undergraduate freshmen and programming language course. The current investigation proves that this model is an effective solution to the problems existing with this course and largely promotes the teaching efficiency.
{"title":"Research on the Student-Oriented Role-Shift Teaching Model in the Computer Information Technology Course","authors":"N. Zhu, Suling Yang, Wumei Ye","doi":"10.1109/ETCS.2009.584","DOIUrl":"https://doi.org/10.1109/ETCS.2009.584","url":null,"abstract":"With the advancement of information technology and the further popularization of computer education, the undergraduate education of computer information technology is facing a new challenge. Taking into consideration the current teaching situation of this course, the Student-Oriented Role-Shift Teaching Model is constructed. Taking Carl Rogers’ non-directive teaching theory as the theoretical foundation, the teaching model partly shifts the center of teaching and learning from the teacher to students in the hope of coping with the specific conditions of China’s undergraduate freshmen and programming language course. The current investigation proves that this model is an effective solution to the problems existing with this course and largely promotes the teaching efficiency.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124693637","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}
Researching the middleware-system structure, the system explores the possibility of adding Active Inquiry Mechanism to the Relationship Database which had none or has a less-active function. By adding an interface between the Relationship Database Management System (RDBMS) and the application, the system provides an Active Mechanism to the RDBMS to make it capable of active trigger. This system has also provided an active database system to the Relationship Database System in order for the user to apply their familiar database product while enjoying the superior capability of the active mechanism. The essay is focusing on the discussion of the Middleware Module of active database and the technique to achieve it.
{"title":"To Research the Design of the Middleware System for Active Database Inquiry","authors":"Shang Xiang","doi":"10.1109/ETCS.2009.680","DOIUrl":"https://doi.org/10.1109/ETCS.2009.680","url":null,"abstract":"Researching the middleware-system structure, the system explores the possibility of adding Active Inquiry Mechanism to the Relationship Database which had none or has a less-active function. By adding an interface between the Relationship Database Management System (RDBMS) and the application, the system provides an Active Mechanism to the RDBMS to make it capable of active trigger. This system has also provided an active database system to the Relationship Database System in order for the user to apply their familiar database product while enjoying the superior capability of the active mechanism. The essay is focusing on the discussion of the Middleware Module of active database and the technique to achieve it.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"79 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126009510","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}
Mean shift algorithm doesn't use the target’s motion direction and speed information in process of object tracking. When the target’s speed is so fast it easily fails to track the target. So a new object tracking algorithm combining Mean shift algorithm with Motion Vector analysis is proposed in this paper. By statistical analysis of the motion vector get from video encoding process, we can get the motion direction and velocity of target, which can be used to correct the central point of the motion candidate region of Mean shift, making the search position is more close to the actual centre of the target. This method can not only track the fast moving target effectively, but also reduce the number of iterative convergence times to improve the efficiency of operations. The algorithm is already use in our intelligent video surveillance equipment in which the operation of video encoding and object tracking is executed in one chip, and the experimental results show that it is feasible and effective.
{"title":"Object Tracking Algorithm Based on Meanshift Algorithm Combining with Motion Vector Analysis","authors":"Gang Tian, Rui-min Hu, Zhong-yuan Wang, Li Zhu","doi":"10.1109/ETCS.2009.225","DOIUrl":"https://doi.org/10.1109/ETCS.2009.225","url":null,"abstract":"Mean shift algorithm doesn't use the target’s motion direction and speed information in process of object tracking. When the target’s speed is so fast it easily fails to track the target. So a new object tracking algorithm combining Mean shift algorithm with Motion Vector analysis is proposed in this paper. By statistical analysis of the motion vector get from video encoding process, we can get the motion direction and velocity of target, which can be used to correct the central point of the motion candidate region of Mean shift, making the search position is more close to the actual centre of the target. This method can not only track the fast moving target effectively, but also reduce the number of iterative convergence times to improve the efficiency of operations. The algorithm is already use in our intelligent video surveillance equipment in which the operation of video encoding and object tracking is executed in one chip, and the experimental results show that it is feasible and effective.","PeriodicalId":422513,"journal":{"name":"2009 First International Workshop on Education Technology and Computer Science","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123222939","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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