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2007 International Symposium on Information Technology Convergence (ISITC 2007)最新文献

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A New Approach on Heart Murmurs Classification with SVM Technique 基于支持向量机的心脏杂音分类新方法
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.12
Zhongwei Jiang, Haibin Wang
{"title":"A New Approach on Heart Murmurs Classification with SVM Technique","authors":"Zhongwei Jiang, Haibin Wang","doi":"10.1109/ISITC.2007.12","DOIUrl":"https://doi.org/10.1109/ISITC.2007.12","url":null,"abstract":"This paper presents a novel spectral analysis method of heart sounds using the normalized autoregressive power spectral density (NAR-PSD) curve with the support vector machine (SVM) technique for classifying the heart murmurs. The 459 heart sound signals with 196 normal and 263 abnormal sound cases acquired from 6 healthy volunteers and 30 patients were tested. Considering the morphological characteristics of PSD of the heart sound in frequency domain, we proposed two diagnostic parameters fmax and fwidth. In order to detect abnormality of heart sound and to discriminate the heart murmurs, the multi-SVM classifiers composed of four SVM modules were considered and designed. With the proposed cardiac sound spectral analysis method, the high classification performances were achieved by 99.90% specificity and 99.52% sensitivity for classifying normal and abnormal sounds. Furthermore, the rate of discrimination on heart sound murmurs is 86.88% for atrial fibrillation sounds, 89.98% for aortic valvular disorders, and 90% for mitral valvular disorder.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122435593","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: 20
Reducing Migration Latency for Distributed Virtual Environments by Mediation 通过中介减少分布式虚拟环境的迁移延迟
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.74
B. Kim, Dongkee Won, D. An, S. Chung
{"title":"Reducing Migration Latency for Distributed Virtual Environments by Mediation","authors":"B. Kim, Dongkee Won, D. An, S. Chung","doi":"10.1109/ISITC.2007.74","DOIUrl":"https://doi.org/10.1109/ISITC.2007.74","url":null,"abstract":"To achieve the scalability, which is one of important research topics on the distributed virtual environment (DVE), the seamless architecture is usually used. In a seamless game world, a player may be unknowingly interacting with objects that are actually being controlled by multiple game processes or servers. The game world is divided into several small pieces and managed by a cluster of game servers. Despite the efforts of developers, gamers are suffered from huge message traffic which comes from the chatting between gamers and the rendering of scene. This paper presents a method for the reducement of migration latency between game servers. Usually, message traffic reaches the peak when a player character is willing to move and is moving to other field server. MigAgent, introduced in this paper, mediates this kind of gamers to minimize traffic and to prepare for unexpected situation.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121348425","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
The Jini-Based Broadband Power Line Communication (BPLC) Home Control System 基于jini的宽带电力线通信(BPLC)家庭控制系统
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.88
Hee-Sun Kim, Sang-Seok Han, Chang-Goo Lee
{"title":"The Jini-Based Broadband Power Line Communication (BPLC) Home Control System","authors":"Hee-Sun Kim, Sang-Seok Han, Chang-Goo Lee","doi":"10.1109/ISITC.2007.88","DOIUrl":"https://doi.org/10.1109/ISITC.2007.88","url":null,"abstract":"A home network system guarantees to provide a family with a safe, economical and healthy life, and it services domestic safety, control of instruments, controllable energy and health monitoring by using home appliances. Our studies designed the broadband power line communication (BPLC) home controller which could save much cost at a network infrastructure by using the existing power line at home. The BPLC home controllers could control various domestic appliances such as a digital door-lock, a boiler, an oven and etc., because these controllers had various I/O specifications. We selected the Jini technology surrogate architecture as a home network middleware for our system, this technology was designed to access a home network system without a limitation of the devices. And the client application program of the system managed and monitored the BPLC home controller via Web browser. In this paper we implemented the home security system using the single BPLC home controller.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129034637","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
Reference Clockless 3.2Gb/s Clock and Data Recovery Circuit for Data Interface Applications 参考无时钟3.2Gb/s时钟和数据恢复电路的数据接口应用
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.75
K. Kim, K. S. Jeong, Seong-Ik Cho
{"title":"Reference Clockless 3.2Gb/s Clock and Data Recovery Circuit for Data Interface Applications","authors":"K. Kim, K. S. Jeong, Seong-Ik Cho","doi":"10.1109/ISITC.2007.75","DOIUrl":"https://doi.org/10.1109/ISITC.2007.75","url":null,"abstract":"In this paper, a 3.2Gb/s clock and data recovery (CDR) circuit for a high-speed serial link without the reference clock is described. It has a phase and frequency detector (PD and FD), which incorporates a half rate bang-bang type oversampling PD and a half- rate frequency detector that can achieve low-jitter operation and improve pull-in range. The PD of oversampling method finds a phase error by generating four phase up/down signals. The FD of quadri-correlator method finds a frequency error by generating frequency up/down signals. Therefore these six signals control three charge pump respectively. It also has a ring oscillator type voltage controlled oscillator (VCO) and three charge pumps (CP). The VCO consists of four fully differential delay cells with rail-to-rail current bias scheme that can increase the VCO tuning range and tuning linearity. The CDR circuit was designed using 0.18 um 1P6M CMOS process for implementation. The simulation results are shown that power consumption of the designed circuit was 160 m Wat 1.8 V supply voltage.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128085619","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
Portable Urodynamics Monitoring System Using a Personal Digital Assistance 使用个人数字辅助的便携式尿动力学监测系统
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.72
K. Kim, Y. An, C.G. Song
{"title":"Portable Urodynamics Monitoring System Using a Personal Digital Assistance","authors":"K. Kim, Y. An, C.G. Song","doi":"10.1109/ISITC.2007.72","DOIUrl":"https://doi.org/10.1109/ISITC.2007.72","url":null,"abstract":"The conventional urodynamic monitoring is performed by filling artificially the bladder with saline. It is difficult to evaluate the physiological functions of the storage and voiding of the bladder. In this study, we constructed an ambulatory urodynamic monitoring (AUM) system and proposed a novel method for estimating abdominal pressure by bio-impedance changes and EMG activity. The system was evaluated in 10 patients. As the intensity of the abdomen contraction increased, the amplitude of bio-impedance signal and the RMS value of EMG increased as compared to those observed during resting. The correlation coefficient was 0.72 for the \"weak\" contraction, 0.96 for \"strong\" contraction, 0.90 for \"stronger\" contraction, 0.84 for \"vigorous\" contraction and 0.78 for \"maximal\" contraction. Also, daily events such as coughing, sneezing and conversation, were sensitively monitored by observing the amplitude change of the bio-impedance signals. However, the EMG signals could not be used to detect these events, therefore, we determined that bio- impedance method was a more useful tool to measure the changes of abdominal pressure noninvasively for urodynamic monitoring.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124537737","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
Enhanced Renormalization Algorithm in MQ-Coder of JPEG2000 JPEG2000 MQ-Coder中的改进重正化算法
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.45
Byung-Jun Min, Sook Yoon, Jungjin Ra, D. Park
{"title":"Enhanced Renormalization Algorithm in MQ-Coder of JPEG2000","authors":"Byung-Jun Min, Sook Yoon, Jungjin Ra, D. Park","doi":"10.1109/ISITC.2007.45","DOIUrl":"https://doi.org/10.1109/ISITC.2007.45","url":null,"abstract":"JPEG2000 is the latest still-image coding standard. It was designed to overcome the limitation of the original JPEG standard and provide high quality images at low bit rates. The JPEG2000 algorithm is fundamentally based on the discrete wavelet transform (DWT) and embedded block coding with optimal truncation (EBCOT). Both algorithms are computation- and memory- intensive. JPEG2000 uses an adapted version of Q-coder, called MQ-coder. Pervious researches mainly focused on speeding up the DWT and BPC other than renormalization part of MQ-coder. Renormalization procedure in MQ-coder contributes to the computation in relatively high percentage. In this paper, we propose an enhanced renormalization algorithm for arithmetic coding in EBCOT tier-1 coding procedure. By analyzing and simplifying the existing algorithm, the proposed algorithm can reduce the computation with a significant percentage. Experimental results show that the computation is reduced approximately 25% comparing to the renormalization procedure of the regular arithmetic coding.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114711078","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
A Virtual Keypad Based on Alternate Half-Field Stimulated Visual Evoked Potentials 基于交替半场刺激视觉诱发电位的虚拟键盘
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.19
A. Materka, M. Byczuk, P. Poryzała
{"title":"A Virtual Keypad Based on Alternate Half-Field Stimulated Visual Evoked Potentials","authors":"A. Materka, M. Byczuk, P. Poryzała","doi":"10.1109/ISITC.2007.19","DOIUrl":"https://doi.org/10.1109/ISITC.2007.19","url":null,"abstract":"A virtual 8-key keypad has been designed and constructed to experimentally validate a new kind of noninvasive brain computer interface (BCI). The principle of its operation is based on a technique of alternate visual half-field stimulation, proposed recently by second of the authors. Microcontroller and DSP integrated circuits are used to generate the signals driving light-emitting diodes for visual stimulation and to detect brain response in the EEG signal. The EEG signal is measured from 3 electrodes placed on occipital part of the scalp using a battery- operated amplifier and A/C converter. A Bluetooth chip is used to transmit the stream of measured data to the processor. Tests of the keypad operation, involving 10 volunteers, show it is faster than conventional BCI devices based on steady-state visual evoked potentials, reported so far in the literature.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125814761","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: 31
A Generalized Regression Neural Network Based on Fuzzy Means Clustering and Its Application in System Identification 基于模糊均值聚类的广义回归神经网络及其在系统辨识中的应用
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.6
Shizheng. Zhao, Jin-lei Zhang, Xunli, Wei Song
{"title":"A Generalized Regression Neural Network Based on Fuzzy Means Clustering and Its Application in System Identification","authors":"Shizheng. Zhao, Jin-lei Zhang, Xunli, Wei Song","doi":"10.1109/ISITC.2007.6","DOIUrl":"https://doi.org/10.1109/ISITC.2007.6","url":null,"abstract":"A method to simplify the generalized regression neural networks (GRNN) structure with a large numbers of training samples is proposed. The amount of pattern units is proportionate to the training samples. So in order to simplify the GRNN's structure, some of the representative samples should be selected to build the network. This paper takes the fuzzy means clustering algorithm. It combines with a similarity measurement, which is calculated between input elements, to find the best clustering centers. According to the simulation results, this strategy can largely simplify the GRNN's structure and significantly improve the network's efficiency with just a tiny of loss in accuracy. The network structure built in this strategy can learn quickly, and is suitable to deal with the problems of nonlinear system identification.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122044857","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: 14
Isochronous MAC Protocol for Real-Time Service Support in MANET 面向MANET实时业务支持的同步MAC协议
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.60
Ung Heo, Jaeho Choi
{"title":"Isochronous MAC Protocol for Real-Time Service Support in MANET","authors":"Ung Heo, Jaeho Choi","doi":"10.1109/ISITC.2007.60","DOIUrl":"https://doi.org/10.1109/ISITC.2007.60","url":null,"abstract":"In this paper a novel medium access control mechanism is investigated as a means to support realtime services. The primary goal is to provide constant-bit-rate voice call services to pairs of autonomous mobile nodes operating in ad hoc networks. Here, a time-slot reservation based MAC is considered to provide real-time voice calls, and a new MAC called the time-slot reservation coordination function (TRCF) is presented. In addition to this isochronous type MAC protocol development, the proposed protocol is modeled using a Markov chain in order to predict its behavior. The performance of TRCF is analytically derived and the performance measures such as average wait time taken for a call connection and throughput are obtained.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131354868","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
Determining a Suitable Desired Factors for Nonnegative Matrix Factorization in Polyphonic Music Transcription 复调音乐转录中非负矩阵分解的合适期望因子的确定
2007 International Symposium on Information Technology Convergence (ISITC 2007) Pub Date : 2007-11-23 DOI: 10.1109/ISITC.2007.41
S. Sophea, S. Phon-Amnuaisuk
{"title":"Determining a Suitable Desired Factors for Nonnegative Matrix Factorization in Polyphonic Music Transcription","authors":"S. Sophea, S. Phon-Amnuaisuk","doi":"10.1109/ISITC.2007.41","DOIUrl":"https://doi.org/10.1109/ISITC.2007.41","url":null,"abstract":"Nonnegative matrix factorization (NMF) is a technique that factorizes a given matrix V into W and H: NMF(Vmn )rarrWmr Hrn . NMF has been applied to various problem domains. So far there has been no fixed rule to select the number of NMF factoring (i.e. the desired factor r). In music transcription, the value r has the semantic of the desired musical line. If the r is not set correctly, the transcription output will not be accurate. In this paper, we present a tactic to get around this issue. We found that by concatenating an input audio stream with another audio stream with prior knowledge of r, where r ges the number of musical lines; we are guaranteed to get the correct number of musical lines in the transcription output. In our approach, NMF is applied to extract musical notes from FFT coefficients extracted from input polyphonic audio streams. The output from our experiment is encouraging and we hope to explore this further in the future.","PeriodicalId":394071,"journal":{"name":"2007 International Symposium on Information Technology Convergence (ISITC 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129928599","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: 9
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