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2009 4th International Conference on Computer Science & Education最新文献

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A study of local component library based on UCDL 基于UCDL的局部构件库研究
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228228
Xu Shoukun, Chu Xiaomei, Ma Zheng-hua
{"title":"A study of local component library based on UCDL","authors":"Xu Shoukun, Chu Xiaomei, Ma Zheng-hua","doi":"10.1109/ICCSE.2009.5228228","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228228","url":null,"abstract":"This article proposes a model of local component library based on the Universal Component Description Language (UCDL). A certain improvements are made for the UCDL criterion. Hierarchical structure is used to organize and manage components based on multi-facet classification scheme. The classification of storage and organization of component are also expounded. A method how to retrieval and fabricate the component based on local component library to realize software reuse is also introduced.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115014288","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}
引用次数: 1
Real-time rendering of large-scale tree scene 实时渲染大规模树木场景
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228130
Huai Yongjian, Zeng Xi, Yu Peng, Liang Jingli
{"title":"Real-time rendering of large-scale tree scene","authors":"Huai Yongjian, Zeng Xi, Yu Peng, Liang Jingli","doi":"10.1109/ICCSE.2009.5228130","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228130","url":null,"abstract":"High-quality, realistic visualization of vegetation and tree model is always a long-standing goal of complex virtual natural scene. Rendering a photo-realistic forest scene in real time has an important significance in simulating the growing tree. In this paper, we present a method of 3D tree modeling and a hybrid rendering algorithm of large-scale forest scene based-on Open Scene Graph (OSG). The three-dimensional forest scene can be rendered according to the data of reality forest stand which are stored in the XML file. A 3D tree model is described with growth characteristics, which is composed of tree trunk, tree branch and leaves. In the modeling, we can simulate different age's trees by using different layers of tree ages branch. An OSG scene graph structure is used to organize and optimize the complicated virtual scene. In order to achieve the interactive frame rates, a view-dependent LOD model selection algorithm and a GPU-based billboard image rendering technology are adopted, which can balance the GPU and CPU's operating burden by using the vertex and index shader buffer. Finally, the technique is proved to be effective in large-size forest scene's real-time rendering.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122724950","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}
引用次数: 1
Clustering algorithm based on optimal intervals division for high-dimension data streams 基于最优区间划分的高维数据流聚类算法
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228155
Yinzhao Li, Jiadong Ren, Changzhen Hu, Li-Na Xu
{"title":"Clustering algorithm based on optimal intervals division for high-dimension data streams","authors":"Yinzhao Li, Jiadong Ren, Changzhen Hu, Li-Na Xu","doi":"10.1109/ICCSE.2009.5228155","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228155","url":null,"abstract":"Clustering for high-dimension data streams is a main focus in the field of clustering research. In order to optimize the clustering process, especially for the large number of candidate subspaces generated in it, optimal segmentation section technology and FP-tree structure are introduced, based on which, DOIC (Dynamic optimal intervals-based cluster) algorithm is proposed. In this paper, the memory-based data partition and optimal intervals division are defined to generate high-density grids for each dimension, which are stored in a High-Density Unit tree (HDU). The HDU-tree is built according to the principle that high-density grids for the same interval in every dimension are stored in the same branch. Thus the process of clustering high-dimension data streams is transformed into that of searching for dense grids in the HDU-tree. By merging HDU-trees, new data streams is inserted and historical data streams is decayed, then the updating of data streams is achieved. The clustering result is returned in the form of DNF expressions timely as requests. The experimental results demonstrate that DOIC has better space scalability and higher clustering quality compared with traditional clustering algorithms.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114187812","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}
引用次数: 0
A teaching model based on schema theory for economic data analysis curriculum 基于图式理论的经济数据分析课程教学模式
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228275
P. Cheng, Jianhua Jiang, Chijun Zhang, Ming Ma
{"title":"A teaching model based on schema theory for economic data analysis curriculum","authors":"P. Cheng, Jianhua Jiang, Chijun Zhang, Ming Ma","doi":"10.1109/ICCSE.2009.5228275","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228275","url":null,"abstract":"The ability of economic data analysis is very important to information major students in economic and economic universities. However, mastering the skill of economic data analysis is not easy to them. The design and construction of a teaching model based on schema theory in economic data analysis curriculum is described, and then it is applied to information major students. The teaching result shows that there is a significant difference in final exam and practice exam between the proposed model and a regular teaching model.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128989784","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}
引用次数: 3
Research on the control of the suspension stiffness for the beams in Gantry Machining Center 龙门加工中心横梁悬架刚度控制研究
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228386
Xia Yang, Zhu Xiao, Yan Zhao, Qingding Guo
{"title":"Research on the control of the suspension stiffness for the beams in Gantry Machining Center","authors":"Xia Yang, Zhu Xiao, Yan Zhao, Qingding Guo","doi":"10.1109/ICCSE.2009.5228386","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228386","url":null,"abstract":"The requirement of the stiffness of the magnetic suspension beams in Large Gantry Machining Center is different from that of the magnetic suspension trains and other magnetic suspension devices. According to its characteristics, a kind of suspension technology, which combines the permanent magnet and the electromagnetism together, is presented and could obviously reduce power consumption. In order to solve the impact of the change of current in magnet coils on the overall stiffness, a double closed loop control system, which introduces a current loop into the position loop for forming a position and current double closed loop control system, is adopted. According to the process characteristics of the machine tool and the choice of parameters in the controller as the fuzzy control rules, a genetic algorithm (GA) fuzzy PID controller to meet the requirement of suspended beams on the machine tool is designed. The simulation results show that the fuzzy PID controller using the GA can increase the stiffness of the suspension system to meet the precision requirement of the magnetic suspension beams system on the machine tool. The optimization effect of the GA is very outstanding, which makes the choice of every parameter in fuzzy PID controller more comprehensive and scientific.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126872747","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}
引用次数: 1
Exponential stability of Cohen-Grossberg neural networks with delays and impulses 具有时滞和脉冲的Cohen-Grossberg神经网络的指数稳定性
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228505
Qing Tang, A. Liu, Huijuan Li, Tingting Liu
{"title":"Exponential stability of Cohen-Grossberg neural networks with delays and impulses","authors":"Qing Tang, A. Liu, Huijuan Li, Tingting Liu","doi":"10.1109/ICCSE.2009.5228505","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228505","url":null,"abstract":"In this paper, the exponential stability of the equilibrium point of a group of Cohen-Grossberg neural networks is obtained by using Lyapunov method and Razumikhin technique.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126896970","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}
引用次数: 0
Teaching mode of Operating System Course for undergraduates majoring in computer sciences 计算机专业本科生操作系统课程的教学模式
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228196
Wu QingQiang, Cao Langcai
{"title":"Teaching mode of Operating System Course for undergraduates majoring in computer sciences","authors":"Wu QingQiang, Cao Langcai","doi":"10.1109/ICCSE.2009.5228196","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228196","url":null,"abstract":"This paper analyzed the existing problems in current teaching of Computer Operating System Course for undergraduates majoring in computer sciences. With the research and teaching practice in Computer Operating System Course, we attempt to improve the teaching quality and get it realized. The teaching experiences than can improve the teaching quality are formulated in four aspects as follows: applying flexible and multi teaching methods; associating knowledge points of related courses; developing a thinking process for proble solving and integrating OpenSolaris open source operating system into teaching. Each above mentioned aspects is explained in detail in the paper. Also, some consideration of future research is addressed.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127003323","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}
引用次数: 12
Data organization and management based on PDA 基于PDA的数据组织与管理
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228160
Jianlian Li, Deng-wen Gan, Jihua Ye, Xi Ouyang
{"title":"Data organization and management based on PDA","authors":"Jianlian Li, Deng-wen Gan, Jihua Ye, Xi Ouyang","doi":"10.1109/ICCSE.2009.5228160","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228160","url":null,"abstract":"This paper makes a research on the application of GIS system to intelligent terminal PDA and its capability and storage mechanism. It studies how to organize and manage the massive regular grid data of GIS real-timely and visually while the storage capability and speed is so limited. On organization of grid data, it puts forward a data management model that combined pyramid model with one-to-four Quad-tree index; and, about data dynamic display, it introduces hierarchical dynamic simplify method(HDS) to reduce the amount of data in different resolutions and further improve the efficiency of visual interaction in PDA. In this way, we give a solution for the mobile GIS which developed by Embedded Visual Basic based on the integration of GPS/GIS, then we implement this system in fire-control GIS.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129219197","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}
引用次数: 0
Fast gate-level simulation and power analysis for high performance microprocessor 高性能微处理器的快速门级仿真和功耗分析
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228487
Yiwei Zhang, Ge Zhang
{"title":"Fast gate-level simulation and power analysis for high performance microprocessor","authors":"Yiwei Zhang, Ge Zhang","doi":"10.1109/ICCSE.2009.5228487","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228487","url":null,"abstract":"With the advance of VLSI technology, power consumption of chips has become a major concern in the state of art CMOS circuits design. Among all kinds of previous power analysis methods, the gate-level power analysis can give a relatively accurate result and has been commonly used. However, the simulation speed is very low due to large amount switching activity records for all gate-level cells. In this paper, we proposed a novel method to accelerate gate-level power simulation and estimation. The experimental results based on actual gate-level netlist of Godson-2 processor[1] have shown that the proposed method can improve simulation speed by about 20 times compared with traditional gate-level power calculation, and the error of power analysis result is less than 5%.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130594368","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}
引用次数: 3
Design and implementation of VPN security gateway based on Linux kernel 2.6 基于Linux 2.6内核的VPN安全网关的设计与实现
2009 4th International Conference on Computer Science & Education Pub Date : 2009-07-25 DOI: 10.1109/ICCSE.2009.5228427
Zhou-jun Li
{"title":"Design and implementation of VPN security gateway based on Linux kernel 2.6","authors":"Zhou-jun Li","doi":"10.1109/ICCSE.2009.5228427","DOIUrl":"https://doi.org/10.1109/ICCSE.2009.5228427","url":null,"abstract":"The paper has firstly made thorough research and analysis to the IPsec support mechanism in Linux kernel 2.6 and then has given out a comprehensive building scheme of the IPsec VPN security gateway based on Linux kernel 2.6, combined with self-designed VPN security gateway console, the security gateway's interaction with kernel module, and the IKE module. The paper has designed and implemented an IPsec VPN security gateway prototype.","PeriodicalId":303484,"journal":{"name":"2009 4th International Conference on Computer Science & Education","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130624651","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}
引用次数: 4
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