发布求助
文献互助 智能选刊 最新文献

2007 International Conference on Computational Science and its Applications (ICCSA 2007)最新文献

筛选
英文 中文
Development of a Software for Effective Cutting Simulation using Advanced Octree Algorithm 基于先进八叉树算法的有效切削仿真软件开发
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.19
T. Pham, Yong-Hyun Kim, S. Ko
{"title":"Development of a Software for Effective Cutting Simulation using Advanced Octree Algorithm","authors":"T. Pham, Yong-Hyun Kim, S. Ko","doi":"10.1109/ICCSA.2007.19","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.19","url":null,"abstract":"The objective of this study is to develop the simulation software for numerical control (NC) machining. This paper presents the visualization and analysis of cutting process in slope machining by using advanced octree method. A software based on advanced octree algorithms has been developed and used as the basis in this study. The suggested algorithm with supersampling techniques in computer graphics used for developing the simulation software can improve efficiently the computation and visualization of cutting process, reduce memory waste, computation time and obtain high level of accuracy. The simulation results of cutting process in slope machining verified that the application of advanced octree model can overcome several limitations of decomposition model in term of achieving high level of accuracy in cutting simulation with fast computation time.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117012058","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
An Enhanced Shim6 Address Switching Method 一种增强的Shim6地址交换方法
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.28
Lizhong Xie, P. Hu, J. Bi
{"title":"An Enhanced Shim6 Address Switching Method","authors":"Lizhong Xie, P. Hu, J. Bi","doi":"10.1109/ICCSA.2007.28","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.28","url":null,"abstract":"In recent times, the layer 3 Shim6 approach has become the most promising multihoming approach in the viewpoint of the IETF. How to switch to another address-pair in case of failure of current using address-pair is a very important problem of Shim6, which is achieved by REAP (reachability protocol) protocol in Shim6 specification. However, in REAP, the address switching time may increase exponentially. This paper proposes a refined Shim6 address switching method which can maintain the address switching time at 10 s exactly. This paper presents the algorithm design and evaluates its effectiveness by simulation experiments.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130269854","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: 2
An Efficient Multigrid Method for Overlapped Grid System to Integrated System Analysis 一种有效的多网格重叠系统集成分析方法
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.41
Soohyung Park, Y. Yu, K. Cho
{"title":"An Efficient Multigrid Method for Overlapped Grid System to Integrated System Analysis","authors":"Soohyung Park, Y. Yu, K. Cho","doi":"10.1109/ICCSA.2007.41","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.41","url":null,"abstract":"A technique for the generation of overlapped grid using a simple shooting method, that is a cut-paste algorithm, is presented. It makes possible to generate overlapping grids with moderate mesh interface region. To generate overlapped grids with minimal amount of user inputs, the advancing-front technique using the fringe points as facets is used. To remove hole points initially, fronts using solid bodies and the zones of interference algorithm are used. The overlapped grids are generated for several cases using present algorithms and Euler equations are solved for two/three-dimensional steady state flow fields. To demonstrate the capability of present method, the two dimensional store separation with trajectory mode of three-DOF is computed in an unsteady flow field.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126503575","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: 5
A Space-efficient On-disk Prefetching Algorithm 一种节省空间的磁盘预取算法
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.60
Junseok Park, K. Koh
{"title":"A Space-efficient On-disk Prefetching Algorithm","authors":"Junseok Park, K. Koh","doi":"10.1109/ICCSA.2007.60","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.60","url":null,"abstract":"With the increased computational capability and memory space of modern hard disk drives, it became possible to employ smarter on-disk prefetching algorithms. In this paper, we propose a novel on-disk prefetching algorithm which estimates whether the blocks are worth prefetching based on history, and decides to do read-ahead or not for each read request. Our work does not require modifying the standard I/O interface such as SCSI interface. Through trace-driven simulations, we show that our algorithm exhibits superior performance in terms of prefetch efficiency than the existing on-disk prefetching algorithm under mixed-media workload.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"652 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132063388","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: 2
A Design of an Assessment System for UML Class Diagram UML类图评估系统的设计
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.31
N. Ali, Z. Shukur, S. Idris
{"title":"A Design of an Assessment System for UML Class Diagram","authors":"N. Ali, Z. Shukur, S. Idris","doi":"10.1109/ICCSA.2007.31","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.31","url":null,"abstract":"The Unified Modeling Language (UML) is probably the most widely known and used notation for object- oriented analysis and design. UML consists of various graphical notations, which capture the static system structures (class diagrams), system component behaviors (state transition diagrams) and system component interactions (collaboration and sequence diagrams). UML notations can be produced with the help of CASE (Computer-aided software engineering) tools such as Rational Rose. Basically, we proposed the development of an Assessment system for UML class diagram, the UML Class Diagram Assessor (UCDA). This tool will receive a students UML class diagram in the form of Rational Rose petal files. In this paper we present a design of UML Class Diagram Assessor (UCDA) that evaluates UML class diagrams automatically. UCDA evaluates the diagram based on three aspects: its structure; its correctness and language used. The output of UCDA is a list of comments on a diagram that is hoped to guide students in understanding on how to represent the system requirement in UML model correctly.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"379 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131997985","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: 49
Security License Distribution Mechanism for Rights Delegation Models of Group Distribution between Consumers 消费者间分组分配权限委托模型的安全许可分配机制
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.34
Zonghua Liu, Bohyun Wang, Byungwook Lee, Myung-Mook Han
{"title":"Security License Distribution Mechanism for Rights Delegation Models of Group Distribution between Consumers","authors":"Zonghua Liu, Bohyun Wang, Byungwook Lee, Myung-Mook Han","doi":"10.1109/ICCSA.2007.34","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.34","url":null,"abstract":"Modern DRM system not only emphasizes the protection of copyrights, but also aims to support specific business use models for the digital contents. Group distribution is a kind of newer business distribution model that would allow to purchase the digital contents by an group, such as a family or an organization etc. It makes convenient for consumer, but how to use the rights of group flexibly and securely has not been solved yet. In this paper, we propose two kinds of rights delegation models, m2m and m2c for group distribution and also give a formal definition for these models. We propose authenticate method for consumer and personalize content encryption key to detect illegal distribution. Finally, we describe security license distribution mechanism for these models.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130503891","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: 5
Load Distribution Method and Admission control for Streaming Media QoS in Distributed Transcoding Servers 分布式转码服务器中流媒体QoS的负载分配方法与准入控制
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.21
Nansook Heo, Dongsun Lim, Dongmahn Seo, Inbum Jung, Yoon Kim
{"title":"Load Distribution Method and Admission control for Streaming Media QoS in Distributed Transcoding Servers","authors":"Nansook Heo, Dongsun Lim, Dongmahn Seo, Inbum Jung, Yoon Kim","doi":"10.1109/ICCSA.2007.21","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.21","url":null,"abstract":"The recent advance in wireless network technologies has enabled the streaming media service on the mobile devices such as PDAs and cellular phones. Since the wireless network has low bandwidth channels and mobile devices are actually composed of limited hardware specifications, the transcoding technology is needed to adapt streaming media to the given mobile devices. When large scale mobile clients demand the streaming service, load distribution Methods among transcoding servers highly impact on the total number of QoS streams. In this paper, the resource weighted load distribution Method is proposed for the fair load distribution and the more scalable performance in distributed transcoding servers. Our proposed Method is based on the weight of resources consumed for transcoding to classified client grades and the maximum number of QoS streams actually measured in transcoding servers. The proposed policy is implemented on distributed transcoding system. In experiments, we evaluate its fair load distribution and scalable performance according to the increase of transcoding servers.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115510845","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
Preliminary Design of the Hybrid Air-launching Rocket for Nanosat 纳米卫星混合空射火箭初步设计
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.16
Jae-Woo Lee, K. Noh, Y. Byun, Bong-Kyo Park
{"title":"Preliminary Design of the Hybrid Air-launching Rocket for Nanosat","authors":"Jae-Woo Lee, K. Noh, Y. Byun, Bong-Kyo Park","doi":"10.1109/ICCSA.2007.16","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.16","url":null,"abstract":"Air-Launching is an effective method that can launch the 'Nanosat' for low launching cost. In this study, the preliminary design of the air-launching micro rocket was performed. Mission and trajectory optimization was performed and the propulsion system was designed based on the mission design. A supersonic air launching rocket with total weight of 830.95 kg, the payload weight of 3.56 kg and the propulsion system length of 5.89 m has been designed.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"13 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113942382","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: 10
A Selective Interpolation Scheme for Mobile Camera Sensors 一种移动相机传感器的选择性插值方法
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.73
Doowon Paik, B. Kim
{"title":"A Selective Interpolation Scheme for Mobile Camera Sensors","authors":"Doowon Paik, B. Kim","doi":"10.1109/ICCSA.2007.73","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.73","url":null,"abstract":"Pictures can be taken anywhere with cameras built in mobile phones, but it is not easy to make a good quality of picture with the built-in camera, especially when enough light is not provided. One of the reasons for the degradation is that with little light, noise increases and the interpolation for Bayer patterned image does not produce good quality of image. In this paper we compared the performance of interpolation algorithms for Bayer patterned image sensors under the various lighting conditions and our experimentation showed that performance of interpolation algorithms depend on the lighting conditions heavily. Based on this observation, we proposed an interpolation scheme that selects the best interpolation algorithms according to the input lighting condition. This scheme can be easily implemented and embedded in the signal processor to improve the quality of pictures for mobile cameras.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114070924","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
Multicast Tree Construction for Supporting QoS 构建支持QoS的组播树
2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.57
Choonsung Rhee, Jungwook Song, Heemin Kim, Sunyoung Han
{"title":"Multicast Tree Construction for Supporting QoS","authors":"Choonsung Rhee, Jungwook Song, Heemin Kim, Sunyoung Han","doi":"10.1109/ICCSA.2007.57","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.57","url":null,"abstract":"In this paper, we designed a new multicast tree construction mechanism in order to support overlay multicast with scalability and QoS. The architecture we introduce efficiently transmits streaming data to the users from multicast source in an environment in which non-multicast network and multicast network. We have introduced loosely-coupled TCP connection in order to support efficient and reliable overlay multicast. Besides, by defining a new service type to flow label of IPv6 header, a selective adoption of FEC and a distinctive transmission became possible. In order to verify the effect of the solution we suggested, we embodied an environment which is similar to the actual service environment by a simulator and tested it. The result of the test shows that the proposed method is more efficient than the traditional unicast approach method and the existing overlay multicast.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128424972","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信