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2008 International Symposium on Communications and Information Technologies最新文献

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A Novel Bandwidth Enhancement Technique for Cascode Amplifier 一种新型级联放大器带宽增强技术
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700229
S. Somvanshi, J. Yousuf
{"title":"A Novel Bandwidth Enhancement Technique for Cascode Amplifier","authors":"S. Somvanshi, J. Yousuf","doi":"10.1109/ISCIT.2008.4700229","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700229","url":null,"abstract":"In this paper, a new technique is presented to increase the bandwidth for a single stage amplifier. Usually, -3 dB bandwidth of single stage amplifier is in few MHz. High output impedance and subsequent capacitive loading decrease the bandwidth of amplifier. The presented technique uses a load which itself acts as bandwidth enhancer. This high speed amplifier is designed on 180 nm CMOS technology, operates at 2.5 V power supply. This amplifier is succeeded by an output buffer to achieve a better linearity, high output swing and required output impedance for matching.","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":"130953635","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
HAMA device - Haptic display for Immersive Virtual Environments HAMA设备-沉浸式虚拟环境的触觉显示
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700233
Satoru Kikuchi, Kazuhiko Hamamoto
{"title":"HAMA device - Haptic display for Immersive Virtual Environments","authors":"Satoru Kikuchi, Kazuhiko Hamamoto","doi":"10.1109/ISCIT.2008.4700233","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700233","url":null,"abstract":"This paper introduces haptic interface actuated with magnetorheological fluid and artificial muscle (HAMA) device, a portable haptic device that is designed for using in immersive virtual environments. User can feel force-feed back and tactile sense simultaneously with this device. Existing haptic devices are very big system, so they are difficult to put on. And some of them have to be set device on the ground. It is very annoying to use if a user have to set a big box on the ground. It may interrupt user's range of view and difficult to move in immersive virtual environment. So it is very important that haptic display for immersive virtual environment is portable and doesn't need assist device to actuate. We propose haptic device that uses two materials in order to meet requirements. In this paper we propose haptic device using magnetorheological fluid and artificial muscle. Each material is used for giving tactile sense and force-feedback. In this paper we developed force-feedback display and tactile display, and evaluated usefulness of them.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"33 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":"128106831","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
Human Computer Interaction Approach in Customer Relationship Management Based on Supplier Perspective 基于供应商视角的客户关系管理中的人机交互方法
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700255
M. Nor, M. Nasir, N. H. Hassan
{"title":"Human Computer Interaction Approach in Customer Relationship Management Based on Supplier Perspective","authors":"M. Nor, M. Nasir, N. H. Hassan","doi":"10.1109/ISCIT.2008.4700255","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700255","url":null,"abstract":"Customer relationship management or in short, CRM helps companies understand, as well as anticipate, the needs of current and potential customers. However, through findings and studies, it is found that more than 50% of the CRM implementations were failed. This was due to five reasons such as system with no-ease-of-use, no understanding from business point-of-view, wrong focus, no user involvement and user resistance. This study attempts to clarify the issues that contribute to the failure of CRM and suggest how a Human computer interaction (HCI) approach will be able to address these issues. This study proposes to simplify the design of the system by using a few approaches namely user centered design (UCD), hierarchical task analysis (HTA), metaphor and user's behavior and characteristic identification in order to come out with a high in usability CRM system. In order to get a wider view of the current CRM implementation, this study has been conducted in the one of multinational company (MNC) in Malaysia. The development and implementation of the system manage to address the current CRM issues and allow users to carry out their task efficiently and effectively thus allows the organization to satisfy their customers' needs.","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":"114265894","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
Microstrip-Fed Slot Antenna with Cross-Shaped Tuning Stub for UWB Application 用于超宽带的十字形调谐根微带馈电槽天线
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700156
W. Kueathaweekun, S. Puntheeranurak, N. Anantrasirichai, C. Benjangkaprasert, T. Wakabayashit
{"title":"Microstrip-Fed Slot Antenna with Cross-Shaped Tuning Stub for UWB Application","authors":"W. Kueathaweekun, S. Puntheeranurak, N. Anantrasirichai, C. Benjangkaprasert, T. Wakabayashit","doi":"10.1109/ISCIT.2008.4700156","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700156","url":null,"abstract":"This paper presents microstrip-fed slot antenna with cross-shaped tuning stub for UWB application. The characteristics of antenna are proposed and analyzed for instance return loss, bandwidth, far field radiation patterns, and gain. The simulation results of the impedance matching for the proposed antenna shown the impedance bandwidth determined by -10 dB return loss, approximate 154% (1.75-13.4 GHz) of the center band, the radiation patterns are bi-directional and maximum gain is 7 dBi at 5 GHz.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"43 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":"116621195","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
Edge Detection of the Optic Disc in Retinal Images Based on Identification of a Round Shape 基于圆形识别的视网膜图像视盘边缘检测
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700277
T. Chaichana, S. Yoowattana, Zhonghua Sun, S. Tangjitkusolmun, S. Sookpotharom, M. Sangworasil
{"title":"Edge Detection of the Optic Disc in Retinal Images Based on Identification of a Round Shape","authors":"T. Chaichana, S. Yoowattana, Zhonghua Sun, S. Tangjitkusolmun, S. Sookpotharom, M. Sangworasil","doi":"10.1109/ISCIT.2008.4700277","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700277","url":null,"abstract":"This paper presents a novel method for identification of the position of the optic disc in retinal images. The method is based on the preliminary detection of the main edge detection of retinal image. The segmentation optic disc is estimated as a circular area. We searched for areas of optic disc using Hough transform which detected several straight lines and approximated them as a circular line. The position of optic disc was identified as the center of the circle. An evaluation of the proposed procedure was performed using a set of 40 images from the DRIVE database, containing images from both healthy (33) and diseased (7) subjects. The optic disc position was correctly identified in 39 out of 40 images and the efficiency was 97.5 percent. The results illustrate that the proposed method can be used for pathological analysis of retinal images.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"17 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":"124753575","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: 17
Genetic Watermarking with Block-Based DCT Clustering 基于块的DCT聚类遗传水印
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700211
S. Promcharoen, Y. Rangsanseri
{"title":"Genetic Watermarking with Block-Based DCT Clustering","authors":"S. Promcharoen, Y. Rangsanseri","doi":"10.1109/ISCIT.2008.4700211","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700211","url":null,"abstract":"In this paper, we propose a new approach for digital image watermarking in DCT domain. This approach used a fuzzy C-mean algorithm (FCM) to classify 8times8 DCT blocks as texture or non texture region. The genetic algorithms (GAs) are then performed to find out the optimal parameters for watermark embedding, independently for each region type. The experimental results show that the proposed approach yields a watermark that is invisible to human eyes and robust to various image manipulations. The algorithm was also compared with the previous work, and our algorithm is superior for all test images.","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":"123327230","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
A New Coarse-To-Fine Method for Disparity Compuation by Sampling Disparity Space 基于视差空间采样的视差计算新方法
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700160
L. Le Sach, K. Atsuta, S. Kondo
{"title":"A New Coarse-To-Fine Method for Disparity Compuation by Sampling Disparity Space","authors":"L. Le Sach, K. Atsuta, S. Kondo","doi":"10.1109/ISCIT.2008.4700160","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700160","url":null,"abstract":"Image-based 3D reconstruction is a useful and active research area. However, it is a challenge to compute 3D measurements in real-time for high resolution input images even if special hardwares are used. This paper proposes a new coarse-to-fine method that can reduce the computation time of the stereo matching problem. The time reduction is done by sampling disparity spaces and computing the matching costs at only the sampled positions. The disparity map that is derived from a sampled disparity space is used to limit the search region for the finer map to its surrounding region. Because of the sampling of disparity spaces and the limitation of the search region, the computation time is reduced dramatically even if the disparity search range is enlarged significantly. The proposed method has been tested with several public stereo image datasets on the Internet. The experimental results indicate that the proposed method can save much of the computation time compared to the other methods that need to compute all of matching costs inside disparity spaces.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"48 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":"128559210","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
Design of CIC Compensator Filter in a Digital IF Receiver 数字中频接收机中CIC补偿滤波器的设计
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700271
G. Dolecek, F. Harris
{"title":"Design of CIC Compensator Filter in a Digital IF Receiver","authors":"G. Dolecek, F. Harris","doi":"10.1109/ISCIT.2008.4700271","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700271","url":null,"abstract":"This paper presents a simple multiplier less CIC compensation filter based on the sharpening technique. The proposed filter provides the narrowband compensation, as well as the wideband compensation in the band which is frac34 of the overall band after decimation. The design parameter is the integer b which depends on the number of the cascaded CIC filters. The values of b are given in the table obtained using different simulations in MATLAB.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"56 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":"130226465","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: 29
CMOS Adiabatic Driver with Bootstrap Technique for Driving Large Capacitive Loads 采用自举技术驱动大容性负载的CMOS绝热驱动器
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700248
J.C. Garcia, J. Montiel-Nelson, S. Nooshabadi
{"title":"CMOS Adiabatic Driver with Bootstrap Technique for Driving Large Capacitive Loads","authors":"J.C. Garcia, J. Montiel-Nelson, S. Nooshabadi","doi":"10.1109/ISCIT.2008.4700248","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700248","url":null,"abstract":"This paper presents the design of a highly energy efficient CMOS adiabatic driver (ee-driver). The proposed ee-driver uses an output stage with two bootstrap capacitors driven by a pre-driver circuit consisting of two differential cascode voltage switch (DCVS) logic cells. When implemented on a 0.13 mum CMOS 1.2 V technology, under the large capacitive loading condition, ee-driver performs better than the reference adiabatic circuit (ab-driver) in terms of propagation delay (39%), the energy-delay product (39%), and active area (57%).","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"48 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":"117092613","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
Thread-Level Parallelism & Shared-Memory Pool Techniques for Authorization of Credit Card System 信用卡系统授权的线程级并行和共享内存池技术
2008 International Symposium on Communications and Information Technologies Pub Date : 2008-12-08 DOI: 10.1109/ISCIT.2008.4700232
M. Nasir, S. Hamid, H. Hassan
{"title":"Thread-Level Parallelism & Shared-Memory Pool Techniques for Authorization of Credit Card System","authors":"M. Nasir, S. Hamid, H. Hassan","doi":"10.1109/ISCIT.2008.4700232","DOIUrl":"https://doi.org/10.1109/ISCIT.2008.4700232","url":null,"abstract":"Nowadays, credit card is a famous trend used by millions of people around the world as a form of payment. This paper presented an architectural framework and prototype of credit card authorization system using thread-level parallelism and shared memory pool techniques in order to support dynamic tuning of the size of the thread pool at runtime. Normally, single threaded were chosen by software developer in current credit card authorization whereby authentication process takes longer time to respond and its limitation of handling huge number of simultaneous transactions at the same time. As a result, the performance of the authorization system was affected during peak hours. Through thread-level parallelism technique or usually known as multi-threading, each worker thread will be assigned with several child threads to perform online fraud validation concurrently, depending on numbers of cryptographic elements presented in transaction message while the work thread itself performed card restriction validation based on the card information stored in card's shared memory pool.","PeriodicalId":215340,"journal":{"name":"2008 International Symposium on Communications and Information Technologies","volume":"137 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":"116364239","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
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