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The IEEE Region 8 EUROCON 2003. Computer as a Tool.最新文献

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The usage of wavelet packet transformation in automatic noisy speech recognition systems 小波包变换在自动噪声语音识别系统中的应用
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248166
B. Kotnik, Z. Kacic, B. Horvat
{"title":"The usage of wavelet packet transformation in automatic noisy speech recognition systems","authors":"B. Kotnik, Z. Kacic, B. Horvat","doi":"10.1109/EURCON.2003.1248166","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248166","url":null,"abstract":"In this paper a noise robust speech feature extraction algorithm using wavelet packet decomposition (WPD) of the speech signal is presented. In contrast to the time-frequency signal representation based on short-time Fourier transform (STFT), a computational efficient WPD can lead to good representation of stationary (vowel phonemes) as well as non-stationary (consonants) segments of the speech signal. In the proposed WPD scheme a novel wavelet function is developed and presented. The noise robustness is improved with the application of proposed wavelet based denoising algorithm with the modified soft thresholding procedure. For decorrelation of feature vector elements and dimensionality reduction of final feature vector a principal component analysis (PCA) is used. Automatic speech recognition results on Aurora 3 database show performance improvement when compared to the standardized mel-frequency cepstral coefficients (MFCC) feature extraction algorithm.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133459225","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
User interface aspects of a Web-based educational system 基于web的教育系统的用户界面方面
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248215
A. Granić, V. Glavinic
{"title":"User interface aspects of a Web-based educational system","authors":"A. Granić, V. Glavinic","doi":"10.1109/EURCON.2003.1248215","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248215","url":null,"abstract":"Current efforts in both the inclusion of intelligence in computer-supported learning and teaching systems and the employment of Internet and World Wide Web, has led to the development of advanced Web-based educational systems. In order to develop an adaptive Web-based educational system that can offer some amount of adaptivity and intelligence, we enhance the operating capabilities of an authoring shell with adaptive and \"Web-based\" features.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"52 1-4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132564820","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
User modeling based on TVAnytime metadata standard 基于TVAnytime元数据标准的用户建模
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248138
M. Pogacnik
{"title":"User modeling based on TVAnytime metadata standard","authors":"M. Pogacnik","doi":"10.1109/EURCON.2003.1248138","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248138","url":null,"abstract":"This paper presents an approach to personalized search and filtering of TV and radio programmes, based on TVAnytime metadata standard. A novel user modeling approach is used to describe user preferences and measure the similarity between users. User profile adaptation is based on implicit feedback.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130254575","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
SHDSL technology complementing other transport technologies SHDSL技术补充了其他传输技术
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248016
M. Rup, R. Sernec, R. Vodisek, E. Sljivar
{"title":"SHDSL technology complementing other transport technologies","authors":"M. Rup, R. Sernec, R. Vodisek, E. Sljivar","doi":"10.1109/EURCON.2003.1248016","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248016","url":null,"abstract":"We describe SHDSL modem application domains according to area network types that carry data. SHDSL modem is described and its use in transcoding applications to interconnect different interfaces. In its most basic form, each interface is transported over the same area network it was designed for (E1 - PDH, X.21 and datacom - X.25, Ethernet - LAN). We show that these interface types can be mixed and matched to different network types by using transcoding properties of the described SHDSL modem. Furthermore, it can be used as a speed adaptation unit, where interconnecting interfaces operate at different data rates. E1 links can be carried over SDH backbone and stretched via SHDSL to remote end. In similar application, modem can be successfully used in reusing current E1-SDH PVCs to carry transparently Ethernet or X.21 traffic. Both ways of transmission are completely independent to achieve minimal transport delays. Applications include use of existing telecommunication infrastructure for providing various symmetrical two-way data services as video-on-demand, videoconferences, remote education, etc.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134591299","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
Analysis of electroencephalographic correlation during grip-force tracking 握力追踪过程中的脑电图相关性分析
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248179
G. Kurillo, B. Koritnik, J. Zidar, T. Bajd
{"title":"Analysis of electroencephalographic correlation during grip-force tracking","authors":"G. Kurillo, B. Koritnik, J. Zidar, T. Bajd","doi":"10.1109/EURCON.2003.1248179","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248179","url":null,"abstract":"In this paper a grip-force tracking system for analysis of human grasping and sensory-motor control is presented. A grip-measuring device was developed to assess forces during grasping. The device was used as an input to a tracking task where the subject applied grip-force according to the visual feedback from the computer screen. The system was used in connection with electroencephalographic (EEG) measurements to obtain information on brain activity during the grip-force tracking. Activation of different brain regions was analysed through frequency and correlation analysis. The coherence of the activity in visual and sensorimotor cortical regions is analysed in the paper. The results show high increase of correlation of alpha and beta-1 signals between these regions of the brain during the active phase. The correlation of the signals is reduced during the rest phase.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133805721","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
Towards 3D watermarking technology 迈向三维水印技术
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248226
M. Corsini, M. Barni, F. Bartolini, R. Caldelli, V. Cappelini, A. Piva
{"title":"Towards 3D watermarking technology","authors":"M. Corsini, M. Barni, F. Bartolini, R. Caldelli, V. Cappelini, A. Piva","doi":"10.1109/EURCON.2003.1248226","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248226","url":null,"abstract":"In the last years the applications using and managing 3D data are quickly increasing: archaeological site reproduction, virtual museums (in the field of Cultural Heritage); games, animations, special effects (in the field of entertainment); enhanced user navigation, e-commerce, virtual reality (in Internet) are only some examples of the potentialities of such data. In this evolving scenario the demand for IPR protection of this kind of multimedia data is growing and new interest is moving towards 3D watermarking. This paper discusses some issues on 3D watermarking, such as robustness and visual quality, and presents a panoramic on some 3D watermarking models proposed so far. Regarding the visual quality aspect, a novel solution to reduce the perceptibility of the watermark, embedded through vertices perturbations is proposed.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"385 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116090163","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
Influence of nonlinear MESFET models on the characterization of resistive mixers 非线性MESFET模型对阻性混频器特性的影响
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1247996
Z. Butkovic, A. Barić
{"title":"Influence of nonlinear MESFET models on the characterization of resistive mixers","authors":"Z. Butkovic, A. Barić","doi":"10.1109/EURCON.2003.1247996","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1247996","url":null,"abstract":"This paper shows the comparison of three nonlinear MESFET models applied to resistive mixer simulations. Two simpler models, the Curtice quadratic and Statz are used as well as more complex TriQuint's TOM2 model. The parameters of the Curtice and Statz models are fitted from the output characteristics obtained by TOM2 model. The simulated conversion loss of mixer with three models shows very good agreement with measured results. Simulation results of the third-order intercept point show larger differences, especially for the Curtice model.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123539279","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
Turbo codes for low-power mobile devices 低功耗移动设备的Turbo码
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248027
L. Hebbes, R. Malyan
{"title":"Turbo codes for low-power mobile devices","authors":"L. Hebbes, R. Malyan","doi":"10.1109/EURCON.2003.1248027","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248027","url":null,"abstract":"Mobile devices have many constraints, not least of which is power. Two issues with regard to low-power mobile devices are discussed here. This paper proposes a refined algorithm for approximating the computational complexities involved in turbo codes. This is then put to use designing \"good codes\" for mobile devices that have access to limited computational resources. This paper also investigates and discusses the advantages of the coding gain afforded by the turbo codes in the mobile arena.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121972694","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
Verification of Bakery algorithm variants for two processes 两个过程的面包店算法变体验证
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248140
D. Dedić, R. Meolic
{"title":"Verification of Bakery algorithm variants for two processes","authors":"D. Dedić, R. Meolic","doi":"10.1109/EURCON.2003.1248140","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248140","url":null,"abstract":"This paper is about Bakery algorithm for mutual exclusion. Three variants of the algorithm for two processes are discussed, formally modelled with a simple process algebra and then verified. Two methods of verification are given. In the first one, the processes representing behaviour of the algorithms are minimised with regard to testing equivalence and then examined. In the second approach, the properties are expressed with temporal logic ACTL and then verified using a model checker. Because we bounded the possible values of variables, the paper contributes new results and knowledge to the well-known facts about Bakery algorithm.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127254719","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
Usage of frame dropping and frame attenuation algorithms in automatic speech recognition systems 自动语音识别系统中丢帧和衰减算法的应用
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248170
D. Vlaj, B. Kotnik, Z. Kaciv, B. Horvat
{"title":"Usage of frame dropping and frame attenuation algorithms in automatic speech recognition systems","authors":"D. Vlaj, B. Kotnik, Z. Kaciv, B. Horvat","doi":"10.1109/EURCON.2003.1248170","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248170","url":null,"abstract":"In this paper the usage of frame dropping and frame attenuation algorithms in automatic speech recognition systems is presented. On the one hand, the use of frame dropping algorithms is important because the speech recognition system does not need to deal with noise-only parts of input signal, but on the other hand, the speech recognition results can be better if the spectral magnitudes of noise-only frames are attenuated. A novel approach of voice activity detection (VAD) based on the log filter-bank magnitudes needed for the frame dropping or the frame attenuation with the so-called \"hangover\" criterion is proposed. All tests were made on Slovenian, German, and Spanish fixed telephone SpeechDat II databases with the HTK speech recognition toolkit. The results obtained show the small word error rate can be achieved at small number of Gaussian mixtures if either frame dropping or frame attenuation algorithm is used.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129102327","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
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