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Custom Integrated Circuits Conference (CICC)

作者： Toshikazu Suzuki Hiroyuki Yamauchi Katsuji Satomi Hironori Akamatsu Corporate System LSI Div. Matsushita Electric Industrial Co. Ltd. Nagaokakyo Japan Corporate System LSI Div. Semiconductor Company Matsushita Electric Industrial Co. Ltd. 1 Kotari-yakemachi Nagaokakyo Kyoto Japan Faculty of Information Engineering Dept. of Computer Science and Engineering Fukuoka Institute of Technology Wajiro-Higashi Higashi-ku Fukuoka Japan

The logic operating voltage is required to suppress for the battery-operated slow application, while the minimum operating voltage of SRAM increase due to the increase in the random threshold-voltage (Vt) fluctuation of the cell transistor (Tr) and the memory capacitance embedded in SoCs with scaling. To suppress the random Vt fluctuation and to guarantee the stable operation over the large memory capacitance at low voltage, a reduced-Vt (LVt) SRAM cell has been proposed. The random Vt fluctuation was suppressed by the proposed LVt cell (Vt=150mV) and increase the static noise margin (SNM) for the data-retention at low voltage compared with conventional higher Vt cell (Vt=300mV). Another unique disturb-free biasing scheme has also been proposed to cancel the substantial trade-off relationship between SNM and the write margin (WRTM) of SRAM cell. With a 45-nm CMOS technology, these proposed techniques improved the SNM over 6-σ random Vt fluctuation with the 0.5-V data-retention voltage and the 0.7-V logic bias voltage. Operating current was reduced by 31% at 32-Kbit SRAM module.

关键词： Random access memory Fluctuations Capacitance Stability Flip-flops Low voltage CMOS technology CMOS logic circuits Large scale integration computer science

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Dynamical Properties of a Plastic Neural Network Model for Tinnitus Therapy and Inhibition of Oscillation Using Noise Stimulus

Dynamical Properties of a Plastic Neural Network Model for T...

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29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS 2007), vol.6

作者： Ken'ichi Fujimoto Hirofumi Nagashino Yohsuke Kinouchi Ali A. Danesht Abhijit S. Pandya School of Health Sciences Faculty of Medicine University of Tokushima Tokushima Japan Department of Life System Institute of Technology and Science University of Tokushima Tokushima Japan Department of Communication Sciences and Disorders Florida Atlantic University Boca Raton FL USA College of Engineering and Computer Science Florida Atlantic University Boca Raton FL USA

Tinnitus is the perception of phantom sounds in the ears or in the head. Sound therapy techniques for tinnitus have been proposed. To account for mechanisms of tinnitus generation and the clinical effects of sound therapies from the viewpoint of neural engineering, we have proposed a plastic neural network model for the human auditory system. We found that this model has a bistable state, i.e., a stable oscillatory state and a stable equilibrium (non-oscillatory) state coexist at a certain parameter region. We also found that the oscillation can be inhibited by supplying sinusoidal stimulus, which is hypothesized as sound for treatment of tinnitus, to the model. By hypothesizing that the oscillation and the equilibrium correspond to generation and inhibition of tinnitus, respectively, we reported that these phenomena could explain the fact that the habituated human auditory system temporarily halts perception of tinnitus following sound therapy. This paper describes dynamical properties of the model and inhibition of the oscillation for two kinds of noise stimuli which correspond to sound for treatment of tinnitus in clinical. Through numerical simulations we found that adequate noise stimulus can inhibits the oscillation.

关键词： Plastics Neural networks Medical treatment Acoustic noise Humans Auditory system Imaging phantoms Ear Neural engineering Numerical simulation

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Fabrication of Millimeter-Wave PTFE-Filled Waveguide Using SR Direct Etching

Fabrication of Millimeter-Wave PTFE-Filled Waveguide Using S...

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2007 Asia Pacific Microwave Conference (APMC 2007), vol.3

作者： Mitsuyoshi Kishihara Yoshiaki Ukita Shigeaki Yamamoto Yuichi Utsumi Isao Ohta Faculty of Computer Science and System Engineering Okayama Prefectural University Okayama Japan Laboratory of Advanced Science and Technology for Industry University of Hyogo Hyogo Japan Graduate School of Engineering University of Hyogo Himeji Hyogo Japan

A metallic waveguide is one of effective media guiding a millimeter- and submillimeter-wave because of the advantage of low loss. In this paper, trial fabrication of a PTFE-filled rectangular waveguide for millimeter-wave components is attempted with the use of the SR direct etching process, sputter deposition of metal, and electroplating. The fabrication procedure for the PTFE-filled waveguide is described and the measured frequency characteristics of the PTFE-filled waveguide mitered bends are shown.

关键词： Millimeter-wave Waveguide SR etching Waveguide bend Microdevice

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Optimized NURBS ship hull fitting using simulated annealing

Optimized NURBS ship hull fitting using simulated annealing

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International Conference on computer Graphics, Imaging and Visualisation, CGIV'06

作者： Wen, Ang Swee Shamsuddin, Siti Mariyam Hj. Samian, Yahya Department of Graphics and Multimedia Faculty of Computer Science and Information System Universiti Teknologi Malaysia Department of Marine Technology Faculty of Mechanical Engineering Universiti Teknologi Malaysia

ISBN: (纸本)0769526063

The shape of a NURBS curve or surface is defined by the location of its control points, the control points' weights, and the knot vectors. Most of the curve and surface design tried to modify the control points. However, it is still impossible to obtained accurate control points for a reconstructed NURBS curve or surface. The fitness of these surfaces is generally considered a subjective notion depending on the judgment of the designers (eg. visually pleasing, devoid of unnecessary bumps or wiggles, satisfying certain continuity requirements). One of the restriction in ship hull design is that the existing details of a ship design on paper or a ship that already been constructed physically couldn't be reconstructed accurately and concisely in a ship hull design software. This research strives to solve this problem by creating fair ship hull surface using NURBS. An optimized NURBS ship hull fitting approach using simulated annealing is developed. Evaluation and analysis (accuracy, fairness and speed of processing) on the proposed approach is done.

关键词： Ships

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IMB3-miner: Mining induced/embedded subtrees by constraining the level of embedding

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10th Pacific-Asia Conference on Advances in Knowledge Discovery and Data Mining, PAKDD 2006

作者： Tan, Henry Dillon, Tharam S. Hadzic, Fedja Chang, Elizabeth Feng, Ling University of Technology Sydney Faculty of Information Technology Sydney Australia Curtin University of Technology School of Information System Perth Australia University of Twente Department of Computer Science Enschede Netherlands

ISBN: (纸本)3540332065

Tree mining has recently attracted a lot of interest in areas such as Bioinformatics, XML mining, Web mining, etc. We are mainly concerned with mining frequent induced and embedded subtrees. While more interesting patterns can be obtained when mining embedded subtrees, unfortunately mining such embedding relationships can be very costly. In this paper, we propose an efficient approach to tackle the complexity of mining embedded subtrees by utilizing a novel Embedding List representation, Tree Model Guided enumeration, and introducing the Level of Embedding constraint. Thus, when it is too costly to mine all frequent embedded subtrees, one can decrease the level of embedding constraint gradually up to 1, from which all the obtained frequent subtrees are induced subtrees. Our experiments with both synthetic and real datasets against two known algorithms for mining induced and embedded subtrees, FREQT and TreeMiner, demonstrate the effectiveness and the efficiency of the technique. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Embedded systems

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Range detection approach in interactive virtual heritage walkthrough

Range detection approach in interactive virtual heritage wal...

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16th International Conference on Artificial Reality and Telexistence - Workshops, ICAT 2006

作者： Sunar, M.S. Zin, A.M. Sembok, T.M.T. Dept. of Computer Graphics and Multimedia Faculty of Computer Science and Information System Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia Faculty of Information Science and Technology Universiti Kebangsaan Malaysia 43600 Bangi Selangor Malaysia

ISBN: (纸本)076952754X

Exploring virtual world will give a memorable experience to the users. Generally, they are expecting smooth navigation with high quality image drawn into their eyes. Nevertheless, when the virtual world is growing simultaneously with the number of objects, the navigation will be detained. Yet, the frame rates can become unacceptable. In this paper, we present and examine range detection approach for view frustum culling to effectively speed-up the interactive virtual heritage project namely Ancient Malacca Virtual Walkthrough. Normal six plane view frustum culling approach use the plane equation to test whether objects is within the visible region. However, range detection approach is different with normal six plane view frustum. It is based on camera referential point and tests the objects if they are in the viewing range. The results show that this approach is able to increase the rendering performance of the virtual walkthrough without sacrificing the visual quality. © 2006 IEEE.

关键词： Virtual reality

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Volumetric spatiotemporal data model

Volumetric spatiotemporal data model

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1st International Workshop on 3D Geoinformation, 2006

作者： Mohd Rahim, Mohd Shafry Shariff, Abdul Rashid Mohamed Mansor, Shattri Mahmud, Ahmad Rodzi Alias, Mohammad Ashari Faculty of Computer Science and Information System University Technology Malaysia 81310 Skudai Johor Malaysia Institute of Advance Technology University Putra Malaysia 43400 Serdang Selangor Malaysia

ISBN: (纸本)354036997X

This paper summarizes the Volumetric Spatiotemporal Data Model which has been developed to manage surface movement in the Virtual Geographical Information systems (VGIS). Volumetric is one type of spatial object in the VGIS, which is used to develop visualize 3D information. In order to develop real process in VGIS, temporal element is an important issue to integrate with 3D object. Here, we propose one spatiotemporal data model used to manage volumetric surface movement according to movement criteria used in VGIS. Time has been integrated with the data model and temporal version of volumetric surface data can be stored by using the model. This model has been implemented by developing prototype of visualization system using Triangulation Irregular Network (TIN) with integrated time in the TIN structure. Result shows that the data model which has been proposed can work with a visualization algorithm using linear interpolation and improvement TIN structure.

关键词： Visualization

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The Tinyphoon's control concept

The Tinyphoon's control concept

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2006 IEEE International Conference on Mechatronics, ICM

作者： Novak, Gregor Roesenert, Charlotte Bader, Markus Deutsch, Tobias Jakubek, Stefan Krywult, Stefan Seyr, Martin Institute of Computer Technology Vienna University of Technology Vienna Austria Department of System Design Faculty of Science and Technology Keio University Yokohama Japan Division of Control and Process Automation Institute for Mechanic and Mechatronic Vienna University of Technology Vienna Austria

ISBN: (纸本)0780397134

Control concepts for mobile service robots are a key issue in robotic research. With the use of mobile robots in the domestic area, further challenges entails new designs facilitating efficient control concepts for fast motion with reduced computational capacity. This paper presents motion control designed for an autonomously acting two-wheel driven robot, which fits in a cuboid with 75x75x150mm. Due to the outstanding design of mechanical and electrical components, the robot is capable to perform high precision movements up to a speed of 2.5m/s, featuring a vision unit that allows a fast environment recognition interpreting current position based on an application dependent world model. Based on predictive control algorithms, trajectory tracking and point stabilization are facilitated. The use of real-time communication for all units allows fast interaction of all components exchanging information, which is indispensable for fast motion control. © 2006 IEEE.

关键词： Control theory

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Barcode technology in blood bank information systems: Upgrade and its impact

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Journal of Medical systems 2006年第6期30卷 449-457页

作者： Li, Bing Nan Chao, Sam Dong, Ming Chui Institute of System and Computer Engineering of Macau University of Macau Taipa 1356 Block 3 1/F Macao Department of Electrical and Electronics Engineering Faculty of Science and Technology University of Macau Taipa Macao

This paper desires to explore the role of barcode technology in blood bank information systems via addressing its upgrade and the consequent impact. Firstly, it briefs the application and effect of barcode technology in blood donation and transfusion service. In the second, the barcode paradigms of Macau Codabar and ISBT 128 are carefully examined and compared in accordance with the procedure and specifications of barcode upgrade. Then, the impact due to upgrade is assessed from the perspectives of blood bank information system, blood banks, and even blood donation and transfusion service. It finally discusses the considerations on implementing the upgrade of barcode technology in blood bank information systems. © 2006 Springer Science+Business Media, Inc.

关键词： Barcode label Blood bank Codabar Information system ISBT 128

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Protecting the exchange of document images in cross-enterprise process integration with web services

Protecting the exchange of document images in cross-enterpri...

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2006 10th IEEE International Enterprise Distributed Object Computing Conference Workshops, EDOCW2006

作者： Chiu, Dickson K. W. Hung, Patrick C. K. Cheng, Vivying S. Y. Kafeza, Eleanna Dickson Computer System 7A Victory Avenue Kowloon Hong Kong Faculty of Business and Information Technology University of Ontario Institute of Technology Canada Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong Department of Marketing and Communications Athens University of Economics and Business Greece

ISBN: (纸本)076952558X

There is now an increasing demand for sharing document images and image data for process integration among enterprises. Web services technology has recently been widely proposed and gradually adopted as a platform for supporting integrations. There are so far no holistic solutions to tackle the various protection issues in this area, especially regarding the security and privacy protection requirements in cross-enterprise progress integration. We propose the exchange of document images through a Document Image Exchange Platform (DIEP), replacing ad-hoc and manual exchange practices. We show how contemporary technologies of Web services and watermarking can help archive images with layered implementation architecture. Through dedicated Web services technologies with watermarking mechanism, not only can the development, deployment, and maintenance of software be streamlined, the privacy protection in document image exchanges as required by disparate processes can also be much facilitated. © 2006 IEEE.

关键词： Web services

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