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2008 International Symposium on Communications and Information Technologies最新文献

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A Proposal of Local Currency System for the Cooperation between Students and Local Community 学生与地方社区合作的本币制度构想
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700208
Y. Tada, Y. Kakizaki, T. Kobayashi, H. Tsuji
{"title":"A Proposal of Local Currency System for the Cooperation between Students and Local Community","authors":"Y. Tada, Y. Kakizaki, T. Kobayashi, H. Tsuji","doi":"10.1109/ISCIT.2008.4700208","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700208","url":null,"abstract":"Currently the local currency has been introduced for the purpose of encouraging the local community. The purpose of this study is that students contribute to the community through voluntary activities, and that students increase communication each other. In this paper, we propose the currency system which supports mutual cooperation of students and community people. The currency system with linking local social network service (SNS) is possible to exchange currency and information among students and community people.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117050699","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
Adaptive Equalization for DS-CDMA Communication System Using Laguerre Filters 基于拉盖尔滤波器的DS-CDMA通信系统自适应均衡
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700143
T. Somkur, C. Benjangkaprasert
{"title":"Adaptive Equalization for DS-CDMA Communication System Using Laguerre Filters","authors":"T. Somkur, C. Benjangkaprasert","doi":"10.1109/ISCIT.2008.4700143","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700143","url":null,"abstract":"In this paper an adaptive equalizer using Laguerre transversal filter and a RLS algorithm for adaptation in DS-CDMA mobile communication system is proposed. The stability of the Laguerre structure is compromise between the FIR and IIR structures, since the Laguerre structure is always stable. We also analyze the bit error rate (BER) performance of the proposed equalizer and the conventional equalizer. The simulation results confirm that the performance of the proposed system in terms of bit error rate has been improved over the conventional equalizer, such as fast convergence and lower BER than the conventional adaptive equalizer for every Eb/N0 value.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117300705","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
Trust Propagation Model for Federated Virtual Commnunities 联邦虚拟社区的信任传播模型
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700223
Shufen Peng, Jingsha Het, Fupeng Dai
{"title":"Trust Propagation Model for Federated Virtual Commnunities","authors":"Shufen Peng, Jingsha Het, Fupeng Dai","doi":"10.1109/ISCIT.2008.4700223","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700223","url":null,"abstract":"Trust management is a new security technology for computer networks. A virtual community (VC) is a trust domain. In trust management, trust propagation is crucial within a VC. Moreover, trust propagation for federated VCs (FVCs) is also important with various federated mechanisms arising. In order to implement trust propagation for FVCs, a layered trust management architecture is proposed and trust evaluation on VCs is also considered. Then trust propagation for a new entity for FVCs is discussed as an example. During trust propagation for FVCs, privacy protection is a focus. Two typical privacy-protected trust propagation models for FVCs are proposed and their workflows are designed in detail. They are simple trust propagation model (STPM) and identity ticket-based trust propagation model (ITTPM). Besides the sameness, ITTPM is more complex than STPM. However, ITTPM is more flexible than STPM while STPM can protect more user privacy than ITTPM. Our method meets requirements of trust management of VCs and takes into account security and factors that will influence the definition of trust inside an identity system.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117234384","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
Low-component-count current-mode Universal Filter based on active-only Lossy and Lossless Integrators 基于有源有损和无损积分器的低分量计数电流模式通用滤波器
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700178
M. Somdunyakanok, K. Angkeaw, P. Prommee, M. Kumngern
{"title":"Low-component-count current-mode Universal Filter based on active-only Lossy and Lossless Integrators","authors":"M. Somdunyakanok, K. Angkeaw, P. Prommee, M. Kumngern","doi":"10.1109/ISCIT.2008.4700178","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700178","url":null,"abstract":"An universal current-mode active-only filter using the biquadratic transfer function is proposed. The proposed circuit is realized by lossy and lossless integrators with minimize active components count without external passive elements. The different kinds of filter functions as lowpass, highpass, bandpass and band-reject response can be obtained without changing circuit topology. The proposed circuit implementation is realized by using MOS transistors, CMOS MO-OTAs, and CMOS OPAMPs. The parameters wp can be tuned electronically through adjusting the transconductance gains of the OTA or electronic resistor power supplies. The simulation results are given by PSpice.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124697162","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
Towards a framework for evaluating Efficiency-Fairness Tradeoffs on the Internet in Development Context 构建发展背景下互联网效率与公平权衡评估框架
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700253
E. A. Gamukama
{"title":"Towards a framework for evaluating Efficiency-Fairness Tradeoffs on the Internet in Development Context","authors":"E. A. Gamukama","doi":"10.1109/ISCIT.2008.4700253","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700253","url":null,"abstract":"Efficiency and fairness are main objectives in any system design and many choices in life are made based on their tradeoffs. This paper investigates the current trends in understanding and applying the fairness concept on the Internet. Then it studies and examines the extension of the fairness concept in the context of development and developing regions, where both the traditional lack of infrastructure and costly communication services have also affected the penetration of the Internet and more even distribution of its benefits. The key question is whether or not it is plausible to identify a framework for the evaluation of efficiency-fairness tradeoffs that may provide a sound basis for a model of a more equitable access to the Internet to a diversity of users with different needs and financial possibilities representing mainly developing regions and emerging economies.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129704335","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 Automatic System for Firearm Identification 一种枪支自动识别系统
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700162
P. Thumwarin
{"title":"An Automatic System for Firearm Identification","authors":"P. Thumwarin","doi":"10.1109/ISCIT.2008.4700162","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700162","url":null,"abstract":"This research proposes an automatic system for firearm identification. In the proposed method, firearm can be identified by using the head of cartridge case image. The unique feature of the individual gun can be extracted by using the absolute value of Fourier coefficients of polar image of cartridge case on circles with different radii. The obtained absolute value of Fourier coefficients is considered as the rotation invariance feature of the cartridge case image. Finally, the Fisher's linear discriminant function is used to identify the gun. The result successfully revel the effectiveness of the method of implementation for some extent.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130752914","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: 6
Low-Complexity Three-Channel Variable Filter-Bank Using Coefficient-Symmetries 基于系数对称的低复杂度三通道可变滤波器组
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700270
T. Deng
{"title":"Low-Complexity Three-Channel Variable Filter-Bank Using Coefficient-Symmetries","authors":"T. Deng","doi":"10.1109/ISCIT.2008.4700270","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700270","url":null,"abstract":"Our previous work has shown that a three-channel (3-channel) variable filter-bank (VFB) can be successfully applied for compensating various hearing loss patterns (audiograms) with high-accuracy. The 3-channel VFB consists of variable lowpass, variable bandpass, and variable highpass digital filters that are transformed from a normalized analog prototype Chebyshev type-I lowpass filter. Since both the magnitudes (gains) and band edge frequencies of the three variable digital filters are independently adjustable, the 3-channel VFB is considerably flexible for achieving high-accuracy audiogram fitting. The objective of this paper is to reveal and theoretically prove the numerator coefficient-symmetries of the three variable filters, and show that each variable filter requires only one multiplication for its numerator filtering operations, so the total number of multiplications can be significantly reduced, which facilitates high-speed audiogram fitting and low-power implementation.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127911793","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
Multichannel Audio Watermarking Method Suitable for Multiple Watermarks 适用于多个水印的多通道音频水印方法
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700217
H. Murata, A. Ogihara, M. Iwata, A. Shiozaki
{"title":"Multichannel Audio Watermarking Method Suitable for Multiple Watermarks","authors":"H. Murata, A. Ogihara, M. Iwata, A. Shiozaki","doi":"10.1109/ISCIT.2008.4700217","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700217","url":null,"abstract":"The objective of this work is to increase the capacity of watermark information in \"the audio watermarking method based on amplitude modification\" which has been proposed by W. N. Lie as a prevention technique against the copyright infringement. In this conventional method, the capacity of watermark information is not enough, and it is desirable that the capacity of watermark information is increased. In this paper, we increase the capacity of watermark information by embedding multiple watermarks in the different levels of audio data independently. The proposed method has many data-channels for embedding, and hence it is possible to embed multiple watermarks by selecting proper data-channel according to required data capacity or recovery rate.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126689560","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
Image interpolation by Estimation and Deconvolution of Wavelet Approximate Subband 小波近似子带估计与反卷积图像插值
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700173
H. Yasuno, W. Chiracharit, K. Chamnongthai
{"title":"Image interpolation by Estimation and Deconvolution of Wavelet Approximate Subband","authors":"H. Yasuno, W. Chiracharit, K. Chamnongthai","doi":"10.1109/ISCIT.2008.4700173","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700173","url":null,"abstract":"This paper proposes a method of image interpolation by estimation and deconvolution of wavelet approximate subband. In this method, wavelet approximate subband that contains much information is firstly interpolated by interpolation methods such as cubic spline in order to find the decimated low-pass component of the image. The low-pass component is then deconvoluted for getting the original image. To confirm the effectiveness of proposed method, the experimental results performed with standard test images reveal that proposed method outperforms conventional methods. The best result in peak-signal-to-noise-ratio is 39.27 dB by our proposal with cubic spline interpolation.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126713266","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
A System Architecture for Thai WordNet Project 泰国WordNet项目的系统架构
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700177
C. Pluempitiwiriyawej, N. Cercone
{"title":"A System Architecture for Thai WordNet Project","authors":"C. Pluempitiwiriyawej, N. Cercone","doi":"10.1109/ISCIT.2008.4700177","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700177","url":null,"abstract":"The goal of the Thai WordNet project is to develop a system and a set of algorithms and tools for efficient construction and maintenance of the Thai WordNet. To accelerate the construction process, we present an approach that reuses existing lexical sources. This conceptual approach can be applied to construct other new lexicons as well. In this paper, we give a brief overview of the Thai WordNet project and describe our experience on constructing ThaiWordNet. At the end, we describe our future plan for further developing the Thai WordNet lexical database and some of research problems that we believe are important and serve as suitable topics for exploratory research.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131158858","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
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