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International Conference on Biometrics and Kansei engineering, ICBAKE

作者： Kentarou Fukuta Takashi Uozumi Tomomasa Nagashima Satellite Venture Business Laboratory Muroran Institute of Technology Muroran Hokkaido Japan Department of Computer Science and System Engineering Muroran Institute of Technology Muroran Hokkaido Japan

Advanced development of a system operating between humans and computers (human friendly system) is more important than the evolution of computer hardware. The salient obstacle to its progress is "How do we acquire and process Kansei? How do we produce a user model and a network service using Kansei?" For preliminary investigation, we constructed fatigue expression models based on a Bayesian network (BN) using psychological and physiological data. We proposed a convergent inference system framework using multiple BNs based on ontology and agent technology. Then we described a Kansei engineering framework for Kansei information processing in a ubiquitous home and smart home. As described herein, we design new ontological categories to construct the service model using Kansei information. Results show that the Kansei modeling using our framework addresses the inference procedure and the inference result of Kansei information as an instance of ontology.

关键词： Ontologies

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Sub-100khz repetition rate mode-locked dispersion managed erbium-doped fiber laser

Sub-100khz repetition rate mode-locked dispersion managed er...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Yue Cai Chun Zhou Lingling Chen Meng Zhang Ling Ren Peng Li Zhigang Zhang Institute of Quantum Electronics State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science Beijing Normal University Beijing China

A 91.4 kHz repetition rate Er-doped dispersion managed mode-locked fiber laser was demonstrated. The pulse energy was amplified to 790 nJ though single stage amplifier.

ISBN: (纸本)9781424438303

A 91.4 kHz repetition rate Er-doped dispersion managed mode-locked fiber laser was demonstrated. The pulse energy was amplified to 790 nJ though single stage amplifier.

关键词： Erbium-doped fiber lasers Laser mode locking Optical fiber polarization Pulse amplifiers Optical fiber communication Laser theory Optical pulses Space vector pulse width modulation Fiber lasers Wavelength division multiplexing

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Simplified cavity for erbium-doped fiber laser mode locked with spectral filtering

Simplified cavity for erbium-doped fiber laser mode locked w...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Yue Cai Chun Zhou Lingling Chen Meng Zhang Ling Ren Zhigang Zhang Institute of Quantum Electronics State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science Beijing Normal University Beijing China

We report a simplified mode-locked Er fiber laser in normal dispersion with birefringence filters compared with the one with nonlinear polarization evolution mechanism.

ISBN: (纸本)9781424438303

We report a simplified mode-locked Er fiber laser in normal dispersion with birefringence filters compared with the one with nonlinear polarization evolution mechanism.

关键词： Laser mode locking Erbium-doped fiber lasers Optical fiber polarization Filters Laser theory Birefringence Optical fiber communication Wavelength division multiplexing Filtering Optical pulses

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381 KHz repetition-rate operation of an ytterbium-doped fiber laser

381 KHz repetition-rate operation of an ytterbium-doped fibe...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Chun Zhou Lingling Chen Yue Cai Meng Zhang Ling Ren Peng Li Zhigang Zhang Institute of Quantum Electronics State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science Beijing Normal University Beijing China

381 kHz repetition-rate operation of an Yb-doped fiber laser oscillator and amplifier was demonstrated. The single pulse energy was 734 nJ after the single stage amplification.

ISBN: (纸本)9781424438303

381 kHz repetition-rate operation of an Yb-doped fiber laser oscillator and amplifier was demonstrated. The single pulse energy was 734 nJ after the single stage amplification.

关键词： Fiber lasers Optical fiber polarization Laser mode locking Optical fiber communication Pulse amplifiers Space vector pulse width modulation Chemical lasers Optical pulses Laser theory Oscillators

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Symmetrical buffer placement in clock trees for minimal skew immune to global on-chip variations

Symmetrical buffer placement in clock trees for minimal skew...

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IEEE International Conference on computer Design: VLSI in computers and Processors, (ICCD)

作者： Renshen Wang Takumi Okamoto Chung-Kuan Cheng Department of Computer Science and Engineering University of California San Diego CA USA System IP Core Research Laboratory NEC Corporation Limited Kawasaki Kanagawa Japan

As the feature size of VLSI circuits scales down and clock rates increases, circuit performance is becoming more sensitive to process variations. This paper proposes an algorithm of symmetrical buffer placement in symmetrical clock trees to achieve zero-skew in theory, as well as robust low skew under process or environment variations. With the completely symmetrical structure, we can eliminate many factors of clock skew such as model inaccuracy, environment temperature and intra-die process variations. We devise a new dynamic programming scheme to handle buffer placement and wire sizing under the constraint of symmetry. By classifying the wires by tree levels and defining the level-dependent blockages, the potential candidate points in the gaps of circuit blocks can be fully explored. The algorithm is efficient for minimizing source-sink delay as well as other linear cost functions. Experiments show that our method helps to obtain a balanced design of clock tree with low delay, skew and power.

关键词： Clocks Delay Very large scale integration Circuit optimization Robustness Temperature Dynamic programming Wire Classification tree analysis Cost function

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Advances in SESAM and carbon nanotube saturable absorber mode locked fiber lasers

Advances in SESAM and carbon nanotube saturable absorber mod...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Zhigang Zhang Meng Zhang Lingling Chen Yiyang Jiao Zhao Tu Ling Ren Yue Cai Chun Zhou Institute of Quantum Electronics State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science Beijing Normal University Beijing China

The paper summarizes recent advances in Er and Yb doped mode locked fiber lasers with saturable absorbers such as semiconductor and carbon nanotube saturable absorbers.

ISBN: (纸本)9781424438303

The paper summarizes recent advances in Er and Yb doped mode locked fiber lasers with saturable absorbers such as semiconductor and carbon nanotube saturable absorbers.

关键词： Laser mode locking Carbon nanotubes Fiber lasers Optical fiber polarization Laser theory Absorption Optical fiber devices Semiconductor lasers Mirrors Optical fiber communication

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A Unique Multi-functional Landmark for Autonomous Navigation

A Unique Multi-functional Landmark for Autonomous Navigation

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International Conference on Natural Computation (ICNC)

作者： Dan Wang Yunwei Jia Zuoliang Cao Tianjin Key Laboratory of Intelligent Computing & Novel Software Technology Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology China School of Mechanical Engineering Tianjin University of Technology China

ISBN: (纸本)9781424445424

To save time, improve flexibility and guarantee accuracy of the navigation system of the mobile robots, a multi-function landmark and a new navigation algorithm are proposed in this paper. With the new algorithm and landmark the mobile robots can be located by only a single landmark, and can be navigated in a large area by serial landmarks. The simple configuration and the convenient material of the landmark increased the system's flexibility and decreased the complexity of the algorithm. From the experimental results it can be concluded that the navigation system has fast navigation speed and high navigation accuracy.

关键词： Navigation Mobile robots Robot kinematics computer vision Educational technology Algorithm design and analysis Shape Intelligent robots Laboratories Mechanical engineering

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Investigation of curvature sensitivity of arc-induced long-period fiber gratings inscribed in a pure silica photonic crystal fiber with two large air holes in the outer cladding region

Investigation of curvature sensitivity of arc-induced long-p...

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OptoElectronics and Communications Conference, OECC

作者： Sunduck kim Gil Hwan Kim Kyu-Jin Hwang Muliar Olena Kwanil Lee Sang Hyuck Kim Je-Myung Jeong Sang Bae Lee Optical Communication Laboratory Division of Electrical and Computer Engineering Hanyang University Seoul Republic of Korea Photonics Research Laboratory Division of Intelligent System Korea Institute of Science and Technology (KIST) Seoul Republic of Korea

An arc-induced long period grating within a photonic crystal fiber with two large-diameter air holes in the cladding region has been shown as a novel curvature sensor. Due to its panda structure, the sensitivity to cu... 详细信息

关键词： Fiber gratings Silicon compounds Photonic crystal fibers Laboratories Temperature sensors Optical fiber sensors Optical sensors Fiber lasers Laser theory Ultrafast optics

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Hot spot temperature models based on top-oil temperature for oil immersed transformers

Hot spot temperature models based on top-oil temperature for...

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Conference on Electrical Insulation and Dielectric Phenomena, (CEIDP)

作者： Jian Li Taosha Jiang Stanislaw Grzybowski State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing China High Voltage Laboratory Department of Electrical and Computer Engineering Mississippi State University MS USA

Thermal behaviors of transformers have a close relationship with the ageing processes of transformer insulation. In oil immersed transformers, feature temperatures such as top-oil temperature and hot spot temperature are recommended to be monitored online. To minimize the risk of failure and to extend the serving life time of transformers, both temperature rises should be controlled within certain range. However, it is difficult to monitor the hot spot temperature of the transformer. Commonly used method is to calculate the rise of the hot spot temperature based on top-oil temperature rise, as recommended in GB/T15164-94 (Chinese standard) and IEEE C57.91. Later on, electrical-thermal analogy models were developed and proved to be accurate in practice. These electrical-thermal models present heat transfer in the transformers as thermal circuits, where each component represents different thermal distribution in the transformers. General model for the thermal circuits were improved by combining fluid transfer theory into the exponential factors. This paper provides an experimental result which was measured from a 5 kV, 100 kVA transformer equipped with fiber optic probes and thermocouples. The paper also summarizes the most often used models for top-oil temperature and especially hot spot temperature calculation. Comments on both models are given in the paper.

关键词： Petroleum Condition monitoring Circuits Aging Power transformer insulation Temperature distribution Temperature control Resistance heating Heat transfer Thermal factors

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Voltage control scheme in distribution network with double feed induction generator wind farm

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WSEAS Transactions on Circuits and systems 2009年第8期8卷 709-718页

作者： Zhao, Jingjing Li, Xin Hao, Jutao State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University 400044 Chongqing China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology 200093 Shanghai China

This paper presents the particle swarm optimization (PSO) for reactive power and voltage control (Volt/Var Control) in distribution system considering DFIG wind farm. In this paper, the reactive power output of DFIG wind farm has been considered as the control variables in the Volt/Var Control scheme by considering the reactive power compensation capability of DFIG. The minimization of total system real power loss and voltage deviation are utilized as an objective and the PSO is used to determine the reactive power output of DFIG wind farm, tap positions of load tap changer transformers (LTC) and numbers of the capacitor banks. Finally, the proposed scheme is applied to the 33-node distribution system. The results indicate that the proposed Volt/Var control scheme can improve the voltage profiles of distribution networks on a large scale.

关键词： Wind turbines

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