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2003 IEEE Industry Applications Conference;38th IAS Annual Meeting: Crossroads To Innovation

作者： Kim, Yong-Seok Shim, Hyungbo Yoshihara, Hidemasa Fujioka, Naoki Kasahara, Hideshi Sul, Seung-Ki R and D Division Hyundai Motor Co. Kia Motors Corp. 772-1 Whasung-si Gyunggi-Do 445-706 Korea Republic of ECE Division Hanyang University Seoul Korea Republic of Yaskawa Siemens Automat./Dr. Corp. Yukuhashi-City Fukuoka 824-8511 Japan Sch. of Elec. Eng./Computer Science Seoul National University Seoul Korea Republic of

Most of conventional anti-sway control systems focus on control sch.mes with a vision system. Because it has many drawbacks such as difficult maintenance and high cost, a new vision -sensorless anti-sway control system for container cranes is proposed in this paper. The proposed system includes a multivariable state feedback anti-sway controller with an integrator, a sway velocity observer, and a sway angle detection method in which an inclinometer is used instead of the vision system. While conventional researches have used a simple pendulum model (single wire rope), the hoist wire rope structure of a real container crane is considered and the motion of the head block (spreader) is analyzed. An elaborate pilot crane is constructed to verify the performance of the proposed system. It is a 1/4-scaled model of a real Rail Mounted Quayside Crane. The feasibility and the performance of the proposed system are synthetically verified on the pilot crane. Also, experiments are carried out on the real container crane (Rubber Tyred Gantry Crane) in the commercial site to verify the performance of the proposed control system.

关键词： Control systems

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Semi-global stabilization of linear systems subject to non-right invertible constraints

Semi-global stabilization of linear systems subject to non-r...

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2003 American Control Conference

作者： Saberi, Ali Stoorvogel, Anton A. Shi, Guoyong Sannuti, Peddapullaiah Sch. of Elec. Eng./Computer Science Washington State University Pullman WA 99164-2752 United States Department of Mathematics Eindhoven Univ. of Technology P.O. Box 513 5600 MB Eindhoven Netherlands Department of Information Technology Delft Univ. of Technology P.O. Box 5031 2600 GA Delft Netherlands Electrical Engineering Department University of Washington Seattle WA 98195 United States Department of Electrical Engineering Rutgers University 94 Brett Road Piscataway NJ 08854-8058 United States

Stabilization problems of linear systems with right invertible constraints have mostly been solved for both global and semi-global frameworks. Linear systems subject to non-right invertible constraints have completely different characteristics compared to those with right invertible constraints. This paper addresses the control problems of linear systems subject to non-right invertible constraints. This paper also expands further the available taxonomy of constraints. The new categorizations of constraints introduced reveal the difficulty in semi-global oriented control design for the non-right invertible constraints. Some new notions of stabilization are also introduced.

关键词： Linear control systems

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A nonlinear programming approach to biaffine matrix inequality problems in multiobjective and structured controls

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International Journal of Control, Automation and Systems 2003年第3期1卷 271-281页

作者： Lee, Joon Hwa Lee, Kwan Ho Kwon, Wook Hyun Department of Electrical Engineering University of Seoul Jeonnongdong 90 Dongdaemoon-ku Seoul 130-743 Korea Republic of Sch. of Elec. Eng. and Comp. Science Seoul National University San 56-1 Shillim-dong Kwanak-ku Seoul 151-742 Korea Republic of

In this paper, a new nonlinear programming approach is suggested to solve biaffine matrix inequality (BMI) problems in multiobjective and structured controls. It is shown that these BMI problems are reduced to nonlinear minimization problems. An algorithm that is easily implemented with existing convex optimization codes is presented for the nonlinear minimization problem. The efficiency of the proposed algorithm is illustrated by numerical examples.

关键词： Control systems

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The effects of operating bias conditions on the proton tolerance of SiGe HBTs

The effects of operating bias conditions on the proton toler...

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作者： Zhang, Shiming Cressler, John D. Niu, Guofu Marshall, Cheryl J. Marshall, Paul W. Kim, Hak S. Reed, Robert A. Palmer, Michael J. Joseph, Alvin J. Harame, David L. Alabama Microelectron. Sci./T.C. Electrical Engineering Department Auburn University Auburn AL 36849-5201 United States Sch. of Elec./Computer Engineering Georgia Institute of Technology Atlanta GA 30332-0250 United States NASA-GSFC Code 562 Greenbelt MD 20771 United States Jackson and Tull Chartered Engineers Washington DC 20018 United States IBM Microelectronics Essex Junction VT 05452 United States Cypress Semiconductor Corporation Lexington KY 40507 United States

The effects of operating bias conditions on the proton tolerance of Silicon-Germanium (SiGe) heterojunction bipolar transistors (HBTs) are investigated for the first time. While this SiGe HBT technology is relatively insensitive to different bias conditions during radiation exposure, the cases with all terminals grounded and with the emitter-base junction reverse-biased show slightly enhanced degradation at proton fluences above 2 × 1013 p/cm2 compared to the other bias configurations, consistent with 2D simulations, and can thus be viewed as worst case conditions. © 2003 Elsevier Ltd. All rights reserved.

关键词： Heterojunction bipolar transistors

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A GUI software development system for digital AV applications

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Systems and computers in Japan 2003年第7期34卷 99-107页

作者： Haruna, Shuusuke Sanada, Norio Kinoh, Hisayuki Sumiya, Kazutoshi Taki, Kazuo Department of Information Grad. Sch. of Science and Technology Kobe University Kobe 657-8501 Japan Core Software Development Center Matsushita Elec. Indust. Co. Ltd. Kadoma 571-8501 Japan Res. Ctr. for Urban Safety/Security Kobe University Kobe 657-8501 Japan Department of Computer Engineering Faculty of Engineering Kobe University Kobe 657-8501 Japan

The scale of software on digital AV appliances that handle large-volume multichannel digital data has been increased by the GUIs (graphical user interfaces) loaded on them in recent years. In addition, the GUIs of AV appliances use remote controls having cursor keys. Focus management must be performed by these to point to the object of operation, in contrast to the mouse, which is capable of pointing on the entire screen. Since focus management changes with changes in the specifications of GUIs, such as screen layouts and the like, software may not be reusable. In this paper, a development system that attempts to improve the productivity of GUI software requiring focus management is discussed from the points of view of (1) a software design model based on an object-oriented MVC model, (2) an execution model with good efficiency corresponding to the design model, (3) development tools performing synthesis of GUI software and automatic generation of focus management procedures, and (4) applications and evaluations of the system. In an example of the application of the system, software productivity with a GUI specification change was improved by a factor of three. © 2003 Wiley Periodicals, Inc.

关键词： Graphical user interfaces

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A retrospective on undergraduate engineering success for underrepresented minority students

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Journal of engineering Education 2003年第1期92卷 27-39页

作者： May, Gary S. Chubin, Daryl E. Sch. of Elec./Computer Engineering Georgia Institute of Technology Policy and Research Natl. Action Cncl. Minorities E. I. Office of the President Georgia Institute of Technology Atlanta GA 30332-0325 NACME Inc. Empire State Building 350 Fifth Avenue New York NY 10118-2299

This paper examines the various actors that contribute to the success of minority students in engineering programs by exploring past and current paradigms promoting success and analyzing models for advancing the participation of members of these populations. Included is a literature review of articles, government reports, Web sites, and archives published since 1980. Student success is correlated to several indicators, including pre-college preparation, recruitment programs, admissions policies, financial assistance, academic intervention programs, and graduate sch.ol preparation and admission. This review suggests that the problem of minority underrepresentation and success in engineering is soluble given the appropriate resources and collective national "will" to propagate effective approaches.

关键词： engineering education

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Experimental characterization of the reliability of multi-terminal dual-damascene copper interconnect trees

Experimental characterization of the reliability of multi-te...

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Materials, Technology and Reliability for Advanced Interconnects and Low-k Dielec.rics - 2003

作者： Gan, C.L. Thompson, C.V. Pey, K.L. Choi, W.K. Chang, C.W. Guo, Q. Adv. Mat. Micro-and Nano-Syst. Prog. Singapore-MIT Alliance 4 Engineering Drive 3 Singapore 117576 Singapore Dept. of Mat. Sci. and Engineering Massachusetts Inst. of Technology Cambridge MA 02139 United States Sch. of Elec. and Electronics Eng. Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore Dept. of Electrical and Comp. Eng. National Univ. of Singapore 4 Engineering Drive 3 Singapore 117576 Singapore Inst. of Microelectronics 11 Science Park Road Singapore 117685 Singapore

The reliability of Cu dual-damascene interconnect trees with 3-terminal (dotted-I), 4-terminal ('T') and 5-terminal ('+') configurations has been investigated. The lifetime of multi-terminal interconnect trees with the same current density through the common middle via was determined to be independent of the number of segments connected at the common junction. Furthermore, our experimental results on dotted-I test structures showed an increase in the reliability of the interconnect tree when the distribution of a same current was not equal in the two connected segments, especially for the cases where one of the segments was acting as a passive reservoir or active source of Cu atoms for the adjoining segment. Due to the low barrier for void nucleation at the Cu/Si3N4 interface, the presence of any small atomic source in neighboring segments with enhance the reliability of a connected segment in which Cu atoms are being drained away. As a consequence, failure can occur in a tree segment which is stressed at significantly lower current densities than more highly stressed adjoining segments.

关键词： Copper

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D.E.M. Analysis on Behavior of Shallowly Buried Pipe Subject to Traffic Loads

D.E.M. Analysis on Behavior of Shallowly Buried Pipe Subject...

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Proceedings of the ASCE International Conference on Pipeline engineering and Construction: New Pipeline Technologies, Security and Safety

作者： Kawabata, T. Uchida, K. Ariyoshi, M. Nakase, H. Mohri, Y. Ling, H.I. Kobe University Faculty of Agriculture 1-1 Rokkodai Nada Kobe Japan Kobe University Faculty of Agriculture Nada Kobe Japan Grad. Sch. of Science and Technology Kobe Japan Tokyo Elec. Power Services Co. Ltd. 3-3 Higashi-Ueno 3 Taito Tokyo Japan Geotechnical Engineering Lab. Natl. Inst. for Rural Engineering Kannondai 2-1-6 Tsukuba Ibaraki 305-0856 Japan Department of Civil Engineering 632 Mudd Hall Columbia University 500 West 120th Street New York NY 10027 United States

ISBN: (纸本)0784406901

In recent years, pipeline construction of shallowly buried flexible pipes is increasing. This is due to the cost of general pipeline construction with deep excavation, having depth of cover of about 1.5-2.0 times of the pipe diameter. However, buried pipeline with a shallow depth of cover has a risk of large deformation caused by traffic loads. This paper presents the behavior of buried flexible pipe with shallow depth of cover under traffic live load analyzed by D.E.M.(Distinct Element Method analysis). As a result, it was found that the behavior of a shallowly buried pipe under traffic live load can not be evaluated by the current design according to Spangler's assumption.

关键词： Pipelines

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Novel Elastic Registration For 2-D Medical And Gel Protein Images 03

Novel Elastic Registration For 2-D Medical And Gel Protein I...

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Asia-Pacific Bioinformatics Conference

作者： Xiu Ying Wang David Dagan Feng Hai Hong Center for Multimedia Signal Processing Dept. of Elec. and Info. Eng. Hong Kong Poly. Univ. and Sch. Comp. Sci. Heilongjiang Univ. Harbin 150080 P.R. China and (BMIT) Group Sch. of Info. Tech. F09 The Univ. of Sydney Australia Center for Multimedia Signal Processing Dept. of Elec. and Info. Eng. Hong Kong Poly. Univ. and (BMIT) Group Sch. of Info. Tech. F09 The Univ. of Sydney NSW 2006 Australia School of Computer Science Heilongjiang University Harbin 150080 P.R. China

ISBN: (纸本)9780909925970

A novel elastic image registration approach is proposed, which can register both 2D medical images and gel elec.rophoresis automatically and accurately. Firstly, the global affine registration method based on image intensity is used to initialise a starting estimation of the robust registration algorithm. Then, by using iterative landmark based algorithm, the affine registration results are registered to further improve the accuracy in the second step, in which, the novel automatic landmark localization method is introduced and the thin-plate spline is used to refine the registration precision. Experimental results are presented for the registration of the 2D Phantom images and gel elec.rophoresis.

关键词： Image registration medical imaging elastic registration affine transformation thin-plate spline gel elec.rophoresis

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Practical cell-oriented adaptive admission control guaranteeing QoS in wireless multimedia networks

Practical cell-oriented adaptive admission control guarantee...

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GLOBECOM'02 - IEEE Global Telec.mmunications Conference

作者： Lee, Jae Young Choi, Jin-Ghoo Bahk, Saewoong Park, Kihong Sch. of Elec. Eng./Computer Science Seoul Korea Republic of

An important Quality-of-Service (QoS) issue in wireless multimedia networks is how to control handoff drops. In this paper, we propose admission control algorithms that adaptively control the admission threshold in each cell, in order to keep the handoff dropping probability below a pre-defined level. The admission threshold is dynamically adjusted based on handoff dropping events. We first present a simple admission control sch.me which brings out an important performance evaluation criterion - inter-cell fairness - and serves as a reference point. We then investigate the inter-cell unfairness problem and develop two enhanced sch.mes to overcome this problem. The performance of these protocols is benchmarked and compared with other competitive sch.mes. The results indicate that our sch.mes perform very well while, in addition, achieving significantly reduced complexity and signaling load.

关键词： Wireless telec.mmunication systems

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