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Proceedings of the 2003 Winter Simulation Conference: Driving Innovation

作者： Boer, Csaba Attila Verbraeck, Alexander Erasmus University of Rotterdam Faculty of Economies Dept. of Computer Science P.O. Box 1738 3000 DR Rotterdam Netherlands Delft University of Technology Fac. of Technol. Plcy./Management System Engineering Department P.O. Box 5105 2600 GA Delft Netherlands

Connecting COTS (Commercial-off-the-Self) simulation packages entails various difficulties. First of all, commercially available simulation packages hide the access to some internal data that is needed to connect to other simulation models in the distributed simulation study. Next, the data sharing between simulation models is complicated. In order to carry out distributed simulation studies applying COTS simulation packages, we have to exactly define the interfacing and data transfer mechanisms. In this paper we present a theoretical description of different solutions for interfacing and transferring data between various simulation models. These mechanisms have been implemented and tested, and applied in a project in order to prove their practical usage.

关键词： Distributed computer systems

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Mood and task coordination of home robots

Mood and task coordination of home robots

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Myung-Jin Jung F. Arai Y. Hasegawa T. Fukuda Human Computer Interaction Laboratory Samsung Advanced Institute of Technology Yongin si Gyeonggi South Korea Department of Micro System Engineering University of Nagoya Nagoya Japan

Many entertainment and healing robots have been developed. These robots have synthetic emotions so that they select behavior based on their current emotional state. On the contrary conventional robots which have designed to perform repetitive factor or office jobs do not have such emotions. Usually human operators assign tasks in explicit manner using keyboard or voice commands. In this paper we propose a coordination mechanism between robot mood (an activated emotion) and its task. On one hand, referring to the emotion-task history of the mechanism, the robot selects a task depending on its current mood if there is no explicit task command from the user. On the other hand, when it performs a task, a particular emotion gets boosted based on the same emotion-task history so that this emotion is more likely to be activated by external stimuli.

关键词： Mood Robot kinematics Intelligent robots History Robot sensing systems systems engineering and theory Human robot interaction Production facilities Intelligent sensors Intelligent agent

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Fault detection of non-linear systems based on multi-form quasi-armax modeling and its application to the ship benchmark

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IFAC Proceedings Volumes 2003年第16期36卷 1047-1052页

作者： K. Kumamaru K. Inoue Y. Hosoyamada T. Söerström Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Fukuoka Japan Department of Automatic Control and System Analysis Institute of Technology Uppsala University P.O.Box 27 Uppsala Sweden

This paper is concerned with an application study of model-based fault detection method to a ship propulsion system. When modeling the object system, Quasi-ARMAX model with multi-model form is used. In this model, the system non-linearity is incorporated into model parameters by using non-linear non-parametric models (NNMs). Kullback discrimination Information (KDI) is introduced as fault detection index to evaluate the distortion in identified model, which is caused by a fault. The effectiveness of the method is verified through simulation studies on the ship propulsion system.

关键词： Fault detection Kullback discrimination information non-linear system parameter estimation quasi-ARMAX model

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Design and implementation of a behavior-based control and learning architecture for mobile robots

Design and implementation of a behavior-based control and le...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Il Hong Suh Sanghoon Lee Bong Oh Kim Byung Ju Yi Sang Rok Oh Department of Electrical Engineering and Computer Science Hanyang University Seoul South Korea Intelligent System Control Research Center Korea Institute of Science and Technology Seoul South Korea

ISBN: (纸本)0780377362

A behavior-based control and learning architecture is proposed, where reinforcement learning is applied to learn proper associations between stimulus and response by using two types of memory called as short Term Memory and Long Term Memory. In particular, to cope with delayed-reward problem, a knowledge-propagation (KP) method is proposed, where well-designed or well-trained S-R(stimulus-response) associations for low-level sensors are utilized to learn new S-R associations for high-level sensors, in case that those S-R associations require same objective such as obstacle avoidance. To show the validity of our proposed KP method, comparative experiments are performed for the cases that:(1) only a delayed reward is used, (2) some of S-R pairs are preprogrammed, (3) immediate reward is possible, and (4) our KP method is applied.

关键词： Mobile robots Intelligent robots Learning Delay Animals Control systems computer architecture Intelligent systems Cognitive robotics Robot sensing systems

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On single/dual-rail mixed PTL/static circuits in floating-body SOI and bulk CMOS: a comparative assessment

On single/dual-rail mixed PTL/static circuits in floating-bo...

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International Conference on VLSI Design

作者： G.R. Cho T. Chen Department of Electrical and Computer Engineering Colorado State University Fort Collins CO USA System VLSI Technology Organization Hewlett Packard Company Fort Collins CO USA

In this paper, single-rail and dual-rail mixed pass-transistor logic (PTL) and static CMOS circuits are presented. The circuits were synthesized using a genetic algorithm that determines the best mixture of PTL and static cells based on area and power. The mixed PTL/static circuits using the proposed method are compared with their static counterparts synthesized using a commercial logic synthesis tool in terms of area, delay and power in a 0.13 /spl mu/m floating-body partially depleted silicon-on-insulator (SOI) and a 0.13 /spl mu/m bulk CMOS technologies. Our experimental results on benchmark circuits from a commercial microprocessor indicates that the proposed mixed PTL/static circuits in both SOI and bulk CMOS technology outperforms their static counterparts in power consumption and/or performance.

关键词： CMOS technology Circuit synthesis CMOS logic circuits Very large scale integration Logic circuits Silicon on insulator technology Energy consumption Logic functions Delay systems engineering and theory

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MMM: a stochastic mechanism for image database queries

MMM: a stochastic mechanism for image database queries

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International Symposium on Multimedia Software engineering

作者： M.-L. Shyu S.-C. Chen M. Chen C. Zhang Chi-Min Shu Department of Electrical & Computer Engineering University of Miami Coral Gables FL USA Distributed Multimedia Information System Laboratory School of Computer Science Florida International University Miami FL USA Department of Environmental and Safety Engineering National Yunlin University of Science and Technology Yunlin Taiwan

We present a mechanism called the Markov model mediator (MMM) to facilitate the effective retrieval for content-based image retrieval (CBIR). Different from the common methods in content-based image retrieval, our stochastic mechanism not only takes into consideration the low-level image content features, but also learns high-level concepts from a set of training data, such as access frequencies and access patterns of the images. The advantage of our proposed mechanism is that it exploits the structured description of visual contents as well as the relative affinity measurements among the images. Consequently, it provides the capability to bridge the gap between the low-level features and high-level concepts. Our experimental results demonstrate that the MMM mechanism can effectively assist in retrieving more accurate results for user queries.

关键词： Stochastic processes Image databases Image retrieval Information retrieval Content based retrieval Feedback Digital images Spatial databases Distributed computing Multimedia systems

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Field emission characteristics of nodular carbon nanotubes

Journal of Vacuum Science & Technology B: Microelectronics a...

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Journal of Vacuum Science & technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena 2003年第4期21卷 1684-1687页

作者： Qiong Li Jingfang Xu Ke Yu Ziqiang Zhu Tao Feng Xi Wang Xianghuai Liu W. P. Kang J. L. Davidson Department of Electronics Science and Technology East China Normal University Shanghai 200062 China Ion Beam Laboratory Shanghai Institute of Micro-system and Information Technology Chinese Academy of Science Shanghai 200050 China Department of Electrical and Computer Engineering Vanderbilt University Nashville Tennessee 37235

A configuration of carbon nanotubes (CNTs) whose surfaces were fully covered with nanoscale nodes was developed in our laboratory. We named this material nodular CNTs or NCNTs. A hydrogen plasma process was used to turn common CNTs into NCNTs. Combined with this process, a technique has been developed to make planar NCNTs field emitters. Field emission experiments showed that planar NCNTs emitters had superior field emission characteristics. Specifically, the emission site density was increased by the order of 106/cm2. A suggestion was given to interpret the formation of NCNTs and a simple model was also proposed to explain the improvement of field emission properties. This technique was found to be an easy way to change the geometric character of CNTs in large quantities and will be useful for creating planar field emitters used in field emitter light sources or display devices.

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Low resonant frequency storage and transfer in structured water cluster

Low resonant frequency storage and transfer in structured wa...

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IEEE International Conference on systems, Man and Cybernetics

作者： Jingong Pan Kang-Nian Zhu Mengchu Zhou Z.Y. Wang Center for Bio-signaling and System Research New Jersey Institute of Technology Newark NJ USA Center for Bio-signaling and System Research Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA China Health Care Association Beijing China

It is well known that electromagnetic fields play a critical role in all biological evolutionary processes. The natural low resonant frequency may interact with the biological signaling pathway through liquids, especially in water. Our hypothesis is that the structured water cluster may not only be an excellent carrier for nutrition and energy, but also an excellent carrier for low frequency information. Our preliminary study has shown that low frequency electromagnetic radiation treated clustered water has many attractive biological functions. It is thus important to understand how to modify the structure of water clusters, and store and transfer the low resonant frequency to living cells. This paper presents some related results.

关键词： Water storage Resonant frequency Humans Resonance Wire Nervous system Medical services Electromagnetic fields Electromagnetic radiation Nanobioscience

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Small target detection using enhanced SAR images

Small target detection using enhanced SAR images

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IEEE International Conference on systems, Man and Cybernetics

作者： J. Zhang J. Schroeder N.J. Redding Department of Electrical and Computer System Engineering Monash University Clayton VIC Australia DSpace Proprietary Limited Mawson Lakes SA Australia Defence Science and Technology Organisation SA Australia

This paper investigates the impact of SAR image enhancement on the performance of small target detection in SAR images. Three SAR image enhancement algorithms are evaluated on large SAR image data-sets. The evaluation results show that image enhancement can greatly improve the performance of false alarm mitigation, and that the level of performance improvement is correlated with the resolution and background suppression of the enhanced images. The higher the resolution and the level of background suppression, the higher the level of performance improvement.

关键词： Object detection Image enhancement History Image resolution Synthetic aperture radar Speckle Layout Signal resolution Image generation systems engineering and theory

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Global and localized parallel preconditioning techniques for large scale solid Earth simulations

Global and localized parallel preconditioning techniques for...

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International Symposium on Parallel and Distributed Processing (IPDPS)

作者： Kai Wang Sangbae Kim Jun Zhang K. Nakajima H. Okuda Laboratory for High Performance Scientific Computing and Computer Simulation Department of Computer Science University of Kentucky Lexington KY USA Research Organization for Information Science and Technology Meguro Tokyo Japan Department of Quantum Engineering and System Sciences University of Tokyo Bunkyo Tokyo Japan

We investigate and compare a few parallel preconditioning techniques in the iterative solution of large sparse linear systems arising from solid Earth simulation with and without using contact information in the domain partitioning process. Previous studies are focused on using static or matrix pattern based incomplete LU (ILU) preconditioners in a localized preconditioner implementation. Our current studies are concerned with preconditioner performance for solving two different cases with and without known contact information. For the cases with contact information, we use localized threshold value based incomplete LU (ILUT) preconditioner to improve efficiency. For the cases without contact information, we use a global sparse approximate inverse preconditioner with a static sparsity pattern to achieve robustness. Numerical results from simulating ground motion on a parallel supercomputer are given to compare the effectiveness of these parallel preconditioning techniques.

关键词： Large-scale systems Earth Solid modeling Linear systems Sparse matrices Computational modeling computer simulation Uniform resource locators Geoscience Information science

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