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ICSICT-2006: 2006 8th International Conference on Solid-state and Integrated Circuit technology

作者： Qiu, Z.J. Liu, R. Zhang, S.L. Gui, Y.S. Cui, L.J. Zeng, Y.P. Chu, J.H. School of Microelectronics Fudan University Shanghai 200433 China State Key Lab. of ASIC System and Micro/Nanoelectronics Science and Technology Innovation Platform Fudan University Shanghai 200433 China National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China Institute of Semiconductors Chinese Academy of Sciences Beijing 10008 China

ISBN: (纸本)1424401615

Variable magnetic field Hall measurements were performed to investigate the electrical properties in In0.52Al0.48As/In 0.65Ga0.35As metamorphic high electron mobility transistors (MMHEMT's) on GaAs substrate at the temperature range from 4 to 100 K. The Shubnikov-de Hass (SdH) measurement shows the two-dimensional electronic behavior and two-subband electron occupation in MMHEMT's. The electron densities and mobilities of the two subbands are obtained by fast Fourier transform analysis. Both the SdH oscillations and conventional Hall analysis are in good agreement in the determination of total electron density, which is about 2.1×1012 cm-2 due to incomplete transfer of the electrons. The temperature dependence of the electron mobility indicates that at low temperature alloy scattering dominates, whereas at high temperature, the mobility is mainly limited by optical phonon scattering. © 2006 IEEE.

关键词： High electron mobility transistors

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A Combining Method for Tumors Detection from Near-infrared Breast Imaging

A Combining Method for Tumors Detection from Near-infrared B...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Zhicheng Wang Jian Liu Jinwen Tian Zeping Xie State Education Commission Key Laboratory for Image Processing and Intelligent Control Institute for Pattern Recognition and Artificial Intelligence Huazhong Univ. of Sci. & Tech. Wuhan 430074 China Key Lab. for Image Process. & Intelligent Control State Educ. Comm. School of Life Science & Technology Huazhong University of Science and Technology Wuhan China

This paper introduces the new qualitative and quantitative methods, which can diagnose breast tumors. Qualitative methods include blood vessel display inside and outside of pathological changes part of breast, display of equivalent pixel curves at the part of pathological changes and display of breast tumor image edge. Accordingly, three feature extraction operators are proposed, i.e. the combination operators of anisotropic gradient and smoothing operator, an improved Sobel operator and an edge sharpening operator. Furthermore, quantitative diagnostic approaches are discussed based on blood and oxygen contents according to abundant clinical data and pathological mechanism of breast tumors. The results of clinic show that the methods of combining qualitative and quantitative diagnose are effective for breast tumor images, especially for early and potential breast cancer

关键词： Breast tumors Displays Pathology Blood vessels Biomedical imaging Pixel Feature extraction Anisotropic magnetoresistance Smoothing methods Breast cancer

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Development of nano-solders, nano thermal interface materials and carbon nanotube based cooling devices

Development of nano-solders, nano thermal interface material...

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IMAPS Nordic Annual Conference 2006

作者： Liu, Johan Wang, Teng Guan, Wanbing Olorunyomi, Michael Olugbenga Jönsson, Martin Wang, Wen Xuan Aronsson, Tomas Lu, Xiuzhen Gao, Yulai Zhai, Qijie Campbell, Eleanor E.B. Shangguan, Dongkai Chalmers University of Technology SE-412 96 Göteborg Sweden Key State Lab. for New Display and System Applications SMIT Center Shanghai University Yanchang Road 149 Shanghai 200072 China School of Materials Science and Engineering Shanghai University Box 275 Yanchang Road 149 Shanghai 200072 China Department of Physics Göteborg University SE 412 96 Göteborg Sweden

ISBN: (纸本)9781622761821

In this review paper, some recent achievements on applications in interconnect, die attach and cooling devices based on nanotechnology approach are presented. The applications are specifically addressing: • Development of nano lead free solder alloys for soldering and ACA interconnect • Development of nano thermal interface material for heat removal applications. • Development of cooling devices based on carbon nanotubes on Si-substrate. The paper also presents the driving forces, fundamental ideas behind this technology, the experimental results as well as the theoretical modeling work achieved so far. It is shown that nanotechnology can potentially revolutionize the electronics packaging and production industry to solve the needs of miniaturization, ultra high density packaging and larger power dissipation.

关键词： Carbon nanotubes

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Some Solutions for Writing Current Reduction and High Density Application of Phase Change Memory

Some Solutions for Writing Current Reduction and High Densit...

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2006 8th International Conference on Solid-state and Integrated Circuit technology

作者： Yinyin Lin Jie Feng Yaifei Cai Hangbing Lv Feifei Liao Xin Liu Tingao Tang Baowei Qiao Yunfeng Lai Yi Zhang Bingchu Cai Bomy Chen Department of Microelectronics ASIC and System State Key Lab.Fudan University Research Institute of Micro/Nanometer Technology Shanghai Jiao Tong University Silicon Storage Technology Inc.1171 Sonora CourtSunnyvaleCA94086USA

＜正＞High writing current is the bottle-neck of PCM application and efforts focus on merely materials doping to improve crystal resistivity,novel structure to decrease active area *** some solutions of our group are ...

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Learning-based web data cleansing for information retrieval

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Journal of Computational Information systems 2005年第4期1卷 709-716页

作者： Liu, Yiqun Zhang, Min Wang, Canhui Ma, Shaoping State Key Lab. of Intelligent Technology and Systems Tsinghua University Beijing 100084 China

With rapid growth of web information, to select high quality web pages that cover valuable information query-independently becomes more and more important in web Information Retrieval (IR) research. Based on query-independent feature analysis, a data cleansing algorithm is proposed by selecting an important type of high quality pages (key resources) on the web. Study into the cleansed page set shows that the set contains only 44.3% pages of the whole collection, while involves more than 98% of hyperlinks and covers about 90% of key information. Experiments based on TREC 2003 data show that the cleansed collection outperforms the whole collection by less than a half size and 8% improvement of retrieval performance.

关键词： Information retrieval

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A one-shot projection method for interconnects with process variations

A one-shot projection method for interconnects with process ...

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IEEE International Symposium on Circuits and systems (ISCAS)

作者： Jun Tao Xuan Zeng Fan Yang Yangfeng Su Lihong Feng Wei Cai Dian Zhou C. Chiang ASIC & System State Key Lab. Fudan University Shanghai P.R. China Mathematics Dept. Fudan University Shanghai P.R. China Department of Mathematics University of North Carolina at Charlotte Charlotte NC USA Electrical Engineering Dept. University of Texas at Dallas Richardson TX USA Advanced Technology Group Synopsys Inc. Mountain View CA USA

With the development of IC technology, it becomes urgent to investigate model reduction method for interconnects with process variations. In this paper, a one-shot projection algorithm (OPM) is proposed to generate a projection matrix that is independent of statistically varying parameters. As a result, construction of the reduced system can be decoupled with the Monte Carlo analysis in either frequency domain or time domain. Therefore, without loss of accuracy, OPM can obtain a reduced system in much less CPU time compared with the previous perturbation scheme. Numerical results have demonstrated the advantages of the proposed OPM

关键词： Integrated circuit interconnections Monte Carlo methods Frequency domain analysis Stochastic processes Large-scale systems Time domain analysis Sampling methods Delay Transfer functions Application specific integrated circuits

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Web data cleansing for information retrieval using key resource page selection 05

Web data cleansing for information retrieval using key resou...

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14th International World Wide Web Conference, WWW2005

作者： Liu, Yiqun Wang, Canhui Zhang, Min Ma, Shaoping State Key Lab. of Intelligent Technology and Systems Tsinghua University Beijing China

ISBN: (纸本)1595930515

With the page explosion of WWW, how to cover more useful information with limited storage and computation resources becomes more and more important in web IR research. Using web page non-content feature analysis, we proposed a clustering-based method to select high quality pages from the whole page set. Although the result page set contains only 44.3% of the whole collection, it is related with more than 98% of links and covers about 90% of key information. Link property and retrieval affects are also observed and experiment results show that key resource selection method is more suitable for the job of data cleansing and the result page set outperforms the whole collection by smaller size and better retrieval performance.

关键词： Digital storage

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Optimal controller design for a class of networked control systems

Optimal controller design for a class of networked control s...

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HIS 2005: Fifth International Conference on Hybrid intelligent systems

作者： Hongbo, Li Zengqi, Sun Fengge, Wu Fuchun, Sun State Key Lab. of Intelligence Technology and System Department of Computer Science and Technology Tsinghua University Beijing 100084 China

ISBN: (纸本)0769524575

This paper is concerned with the optimal controller design of networked control systems (NCSs). Aiming at a class of NCSs, in which network-induced delay and data packet dropout exist simultaneously from sensor to controller, this paper proposes a novel optimal controller based on a new adaptive genetic algorithm and simulated anneal algorithm (AGASA), guaranteed cost controller (GCC) and state feedback controller (SFC). The proposed controller is less conservative than GCC and SFC, and can be applied to both linear and nonlinear NCSs. Two examples are presented to illustrate the proposed controller.

关键词： systems analysis

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Automatic image annotation based-on model space

Automatic image annotation based-on model space

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2005 IEEE International Conference on Natural Language Processing and Knowledge Engineering, IEEE NLP-KE'05

作者： Lu, Jing Ma, Shao-Ping Zhang, Min State Key Lab. of Intelligence Technology and System Department of Computer Science and Technology Tsinghua Univ. Beijing 100084

ISBN: (纸本)0780393619

Automatic image annotation is an important but highly challenging problem in content-based image retrieval. This paper introduces a new procedure for providing images with semantic keywords. To bridge the semantic gap, classified images are used to train a special multi-class classifier which maps the visual image feature into the model space. The model-vectors that construct the model space are more appropriate for the image content and are applied to each individual image. Soft lab.ls are then given to the unannotated images during the propagation procedure, and as a keyword, each lab.l is associated with a membership confidence in probability. Thus conceptualized annotation of images could be provided to users. An empirical study of the COREL image database showed that the proposed model-vectors outperformed visual features by 14.0% in the F-measure for annotation. © 2005 IEEE.

关键词： Image analysis

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Modeling and control of networked control systems with random delays

Modeling and control of networked control systems with rando...

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8th International Workshop on Hybrid systems: Computation and Control, HSCC 2005

作者： Wang, Yan Sun, Zeng Qi Sun, Fu Chun State Key Lab. of Intelligent Technology and Systems Department of Computer Science Tsinghua University Beijing 100084 China

This paper discusses the problems of control design and stability analysis of the networked control systems(NCSs) with random delays. The network-induced delays of the NCS are considered as interval variables governed by a Markov chain. Using the upper and lower bounds of the delays, a discrete-time Markovian jump system with norm-bounded uncertainties is presented to model the NCS. Based on this model, a state feedback controller can be constructed via a set of linear matrix inequalities. Simulations are given to illustrate the proposed results. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Discrete time control systems

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