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

The QR-code reorganization in illegible snapshots taken by mobile phones 用手机拍摄的难以辨认的快照中的qr码重组

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.86

A. Sun, Yan Sun, Caixing Liu

引用次数: 67

VLSI-Oriented Architecture for Two's Complement Serial-Parallel Multiplication without Speed Penalty 面向vlsi的无速度损失双补串行并行乘法体系结构

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.56

S. Moh

引用次数: 3

Unsteady Cavitation and Cryogenic Flow Cavitation around 2D Body 二维体周围非定常空化与低温流动空化

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.49

Seyoung Lee, Changjin Lee, Soohyung Park

{"title":"Unsteady Cavitation and Cryogenic Flow Cavitation around 2D Body","authors":"Seyoung Lee, Changjin Lee, Soohyung Park","doi":"10.1109/ICCSA.2007.49","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.49","url":null,"abstract":"Since the coupling of cavitation modeling with turbulent flow is the difficulty topic, a numerical simulation for two phase flow remains as one of the challenging issues in the society. This research focuses on the development of numerical code to deal with incompressible two phase flow around 2D hydrofoil combined with cavitation model suggested by Kunz et al. with k-epsiv turbulent model. The simulation results are compared to experimental data to verify the validity of the developed code. Also, the comparison of the calculation results is made with LES results to evaluate the capability of conventional turbulence models such as k-epsiv model. The calculation results show very good agreement with experimental observations even though this code can not grasp the small scaled bubbles in the calculation whereas LES can hold the real physics. Also, the calculation of cavitation in cryogenic fluid was done by implementing the temperature sensitivity in government equations. Even though the results show good agreement with previous calculation results, further research will be needed to account for real physics of the formation of cavitation in cryogenic fluid due to temperature sensitivity. This code will be further extended to 3D compressible two phase flow for the study on the fluid dynamics around inducers and impellers in turbo pump system.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"32 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":"117079450","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: 7

Dynamic Software Adaptation with Dependence Analysis for Multi-Agent Platform 基于依赖分析的多智能体平台动态软件适配

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.50

S. Han, Sung-Keun Song, H. Youn

引用次数: 5

A Study of Superdistribution Model for Family Domain in DRM System DRM系统中族域超分布模型的研究

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.48

Bohyun Wang, Zonghua Liu, Byungwook Lee

引用次数: 0

Architecture of a SCORM-Compliant Assessment Authoring Tool 符合scorm的评估创作工具的体系结构

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.40

K. Parmar, R. Anane, R. Hendley

引用次数: 5

Identifying Traceability between Feature Model and Software Architecture in Software Product Line using Formal Concept Analysis 用形式概念分析识别软件产品线中特征模型和软件体系结构之间的可追溯性

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.59

T. K. Satyananda, Danhyung Lee, Sungwon Kang, S. I. Hashmi

引用次数: 32

NSA simplification algorithm: geometrical vs. visual quality NSA简化算法:几何vs.视觉质量

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.66

Frutuoso G. M. Silva

{"title":"NSA simplification algorithm: geometrical vs. visual quality","authors":"Frutuoso G. M. Silva","doi":"10.1109/ICCSA.2007.66","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.66","url":null,"abstract":"The model simplification algorithms have a great interest in a variety of areas, since it allow the replacement of large models by approximations with far fewer cells for manipulation and visualization purposes. The quality of the simplified models and the execution times are the main aspects to distinguish the algorithms. Normally the quality evaluation is based on the analysis of geometrical errors of the simplified models but it is not enough to evaluate the visual quality of simplified models. This paper presents a edge collapsing-based simplification algorithm, called NSA, for polygonal models that is faster than the other algorithms found in the literature that use the edge collapse operation. However it makes a good trade-off between time performance and mesh quality. Besides, in some cases, the visual quality of simplified models created by NSA algorithm is superior to the visual quality of simplified models created by other algorithms, particularly for models that have planar zones (CAD models). Some results are compared between NSA and QSlim algorithms to illustrate the geometrical and visual quality of simplified models.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"09 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":"115644376","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: 8

Handwritten Signature Authentication Scheme using Integrated Statistical Analysis of Bi-Color Images 基于双色图像综合统计分析的手写签名认证方案

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.15

D. Bhattacharyya, S. Bandyopadhyay, D. Choudhury

{"title":"Handwritten Signature Authentication Scheme using Integrated Statistical Analysis of Bi-Color Images","authors":"D. Bhattacharyya, S. Bandyopadhyay, D. Choudhury","doi":"10.1109/ICCSA.2007.15","DOIUrl":"https://doi.org/10.1109/ICCSA.2007.15","url":null,"abstract":"In this paper, we propose data hiding, extraction and handwritten signature authentication algorithms for binary images. Handwritten signature Image can be transmitted from source to target securely over network after processing the source image by using this proposed data hiding algorithm. According to the algorithm, size of the carrier image must be double (or more) the size of source image. If necessary then additional bytes or noise needed to be injected into carrier image to attain the required size. To do this, the header is updated by the new value (sum of original size of file and amount of noise). There are numerous biometric authentication methods also proposed. In this paper, we propose a novel and new alternative. Entire work can be divided into two phases- a. security on transmission; and b. Recognition and authentication. Our scheme supports the application environment and we strongly believe that \"user authentication by statistical analysis\" could be a solid platform for future research and study. This proposed scheme could be applied for ownership protection, copy control, annotation and authentication of digital media. This work is focused on authentication of handwritten signature.","PeriodicalId":386960,"journal":{"name":"2007 International Conference on Computational Science and its Applications (ICCSA 2007)","volume":"15 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":"117334288","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

Holograph Interferomatery for Modelling Rate Change of Shoreline from Airsar Data 利用Airsar数据模拟海岸线速率变化的全息干涉法

2007 International Conference on Computational Science and its Applications (ICCSA 2007) Pub Date : 2007-08-26 DOI: 10.1109/ICCSA.2007.89

M. Marghany, M. Hashim, A. Cracknell

引用次数: 2