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Conference on Lasers and Electro-Optics (CLEO)

作者： Eiichi Matsubara Yuta Kawamoto Taro Sekikawa Mikio Yamashita Department of Applied Physics Core Research for Evolutional Science and Technology Japan Science and Technology Agency Hokkaido University Sapporo Japan

We demonstrate Fourier synthesis of RN-like multiple coherent anti-Stokes Raman-scattering signals in a KTaO 3 single crystal at room temperature. Isolated pulses with 13-fs duration and 520-690-nm wavelength range a... 详细信息

关键词： Pulse generation Signal generators Optical pulse generation Frequency Ultrafast optics Optical pulses Nonlinear optics Pulse amplifiers Structural beams Isolation technology

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RISK INFORMATION DELIVERY SYSTEM BY WIRELESS SENSOR NETWORKS FOR EVACUATION IN EARTHQUAKE

RISK INFORMATION DELIVERY SYSTEM BY WIRELESS SENSOR NETWORKS...

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International Conference on Networked Sensing Systems

作者： N. Kurata K. Sasaki K. Kanai Y. Tobe Kobori Research Complex Kajima Corporation School of Engineering Tokyo Denki University Core Research for Evolutional Science and Technology Japan Science and Technology Agency NTT DOCOMO INC School of Engineering Tokyo Denki University School of Engineering Tokyo Denki University Core Research for Evolutional Science and Technology Japan Science and Technology Agency

We propose Risk Information Delivery (RID) System for natural hazard mitigation. A system design of the RID and result of experiment using a prototype of the RID are described.

ISBN: (纸本)9781424463138;9781424463145

We propose Risk Information Delivery (RID) System for natural hazard mitigation. A system design of the RID and result of experiment using a prototype of the RID are described.

关键词： Sensor networks Risk information Earthquake monitoring Natural hazard mitigation Sensor networks RID seismic networks Wireless sensor networks Evacuation Earthquakes DELIVERY SYSTEM Radio Sensors

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A Flexible Nonporous Heterogeneous Catalyst for Size‐Selective Oxidation through a Bottom‐Up Approach†

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Angewandte Chemie 2010年第51期122卷

作者： Noritaka Mizuno Sayaka Uchida Keigo Kamata Ryo Ishimoto Susumu Nojima Koji Yonehara Yasutaka Sumida Department of Applied Chemistry School of Engineering The University of Tokyo Hongo Bunkyo‐ku Tokyo 113‐8656 (Japan) Core Research for Evolutional Science and Technology (CREST) (Japan) Science and Technology Agency (JST) 4‐1‐8 Honcho Kawaguchi Saitama 332‐0012 (Japan) Advanced Materials Research Center Nippon Shokubai Co. Ltd. 5‐8 Nishi Otabi‐cho Suita Osaka 564‐8512 (Japan)

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Monocycle pulse generation and octave bandwidth amplification

Monocycle pulse generation and octave bandwidth amplificatio...

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

作者： Keisaku Yamane Takashi Tanigawa Taro Sekikawa Mikio Yamashita Core Research Evolutional Science and Technology Japan Science and Technology Agency Sapporo Japan Department of Applied Physics Hokkaido University Sapporo Japan

We demonstrated experimentally the generation of 65-muJ, 5.8-fs optical pulses with an ultrabroad bandwidth (540 - 1000 nm) by the use of a double-pass angularly-dispersed noncollinear optical parametric amplifier.

ISBN: (纸本)9781424438303

关键词： Pulse generation Bandwidth Optical pulse generation Optical pulses Pulse amplifiers Optical pulse shaping Optical pumping Nonlinear optics Lenses Stimulated emission

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Uniaxial stress dependence of yellow series np excitons in Cu2O

Uniaxial stress dependence of yellow series np excitons in C...

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Conference on Lasers and Electro-Optics (CLEO)

作者： E. Chae K. Yoshioka M. Kuwata-Gonokami Department of Applied Physics Solution Oriented Research for Science and Technology (SORST)-JST and Core Research for Evolutional Science and Technology (CREST)-JST University of Tokyo Tokyo Japan

We observed stress dependence of the energy of np excitons in Cu 2 O by linear absorption spectroscopy. The energy shift of np states agrees well with calculations using modified coefficients under symmetry considerat... 详细信息

关键词： Stress Excitons Spectroscopy Raman scattering Energy measurement Physics Electromagnetic wave absorption Radiative recombination Laser transitions Density measurement

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Giant optical activity of planar chiral nanostructures and circularly-polarized light emission

Giant optical activity of planar chiral nanostructures and c...

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

作者： Kuniaki Konishi Makoto Kuwata-Gonokami Photon Science Center University of Tokyo Japan Department of Applied Physics Core Research of Evolutional Science and Technology Japan Science and Technology Corporation Tokyo Japan

We demonstrated large optical activity in the zeroth-order transmission with metal and dielectric planar chiral nanogratings enhanced by surface-plasmon or waveguide resonances; and observed circularly-polarized emiss... 详细信息

ISBN: (纸本)9781424438303

关键词： Stimulated emission Semiconductor nanostructures Dielectrics Surface waves Optical surface waves Optical waveguides Optical planar waveguides Planar waveguides Semiconductor waveguides Resonance

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Active control of terahertz optical activity by photo-excitation of metal chiral gratings

Active control of terahertz optical activity by photo-excita...

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Conference on Lasers and Electro-Optics (CLEO)

作者： N. Kanda K. Konishi M. Kuwata-Gonokami Department of Applied Physics Core Research for Evolutional Science and Technology (CREST) JST University of Tokyo Bunkyo Tokyo Japan

We report pronounced light-induced change of the optical activity at terahertz frequency in metal chiral gratings on semiconductor substrates. This result opens new horizons in the active terahertz polarization control.

关键词： Optical control Gratings Optical polarization Optical sensors Optical pumping Substrates Optical films Optical microscopy Optical surface waves Metamaterials

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Fabrication of a multi-modal sensor with PH, EC and temperature sensing areas for agriculture application

Fabrication of a multi-modal sensor with PH, EC and temperat...

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IEEE SENSORS

作者： Masato Futagawa Taichi Iwasaki Hidekuni Takao Makoto Ishida Kazuaki Sawada Dept. of Electronic and Information Engineering Toyohashi University of Technology Toyohashi Japan Core Research for Evolutional Science and Technology Japan Science and Technology Agency Tokyo Japan

A multi-modal sensor, with which was possible to simultaneously measure pH, electrical conductivity (EC) and temperature, was fabricated. The pH sensor, EC sensor, and temperature sensor were integrated using compatible complementary metal-oxide semiconductor (CMOS) logic technology on a small Si chip (area, 25 mm 2 ). Simultaneous measurements of pH, EC and temperature were demonstrated, and the sensor was used successfully to measure three different kinds of signal from the sensors with a pH 4.01 buffering solution. In another measurement, the sensor was possible to be inserted in soil, and used to successfully measure EC in real time for 6 days.

关键词： Fabrication Multimodal sensors Temperature sensors Agriculture Semiconductor device measurement Soil measurements CMOS technology Conductivity measurement Electric variables measurement MOS devices

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Effect of micropillar density on separation efficiency of semi-packed micro gas chromatographic columns

Effect of micropillar density on separation efficiency of se...

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IEEE SENSORS

作者： Sho Nishiyama Takashi Nakai Masaki Shuzo Jean-Jacques Delaunay Ichiro Yamada Department of Mechanical Engineering School of Engineering University of Tokyo Tokyo Japan Core Research of Evolutional Science and Technology Tokyo Japan

In this report, the effect on the separation efficiency of the density of square micropillars in semi-packed gas chromatography columns are investigated. Two columns with the same pillar arrangement but different pillar density were experimentally characterized and simulated. The experimental results show that the high pillar density column is 1.2 times superior to the low pillar density column with respect to the separation efficiency. Good consistency between simulated and observed band broadening of the peaks was found.

关键词： Coatings Gas chromatography Instruments Mechanical engineering Degradation Polymers Pharmaceuticals Food industry Gas industry Petroleum industry

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Evaluating people's attention in the real world

Evaluating people's attention in the real world

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ICROS-SICE International Joint Conference 2009, ICCAS-SICE 2009

作者： Thepvilojanapong, Niwat Yakiyama, Yasunori Mihirogi, Oru Iwai, Masayuki Umeda, Kazunori Tobe, Yoshito Shibasaki, Ryosuke School of Science and Technology for Future Life Tokyo Denki University Tokyo Japan School of Advanced Science and Technology Tokyo Denki University Tokyo Japan Department of Information Systems and Multimedia Design Tokyo Denki University Tokyo Japan Institute of Industrial Science University of Tokyo Tokyo Japan School of Science and Engineering Chuo University Tokyo Japan Center for Spatial Information Science University of Tokyo Tokyo Japan Core Research for Evolutional Science and Technology Japan Science and Technology Agency Japan

ISBN: (纸本)9784907764333

Although human activities in the World Wide Web are rapidly increasing due to the advent of many online services and applications, we still need to appraise how things such as a merchandise in a store or pictures in a museum receive attention in the real world. To measure people's attention in the physical world, we propose a Sensor of Physical-world Attention using Laser scanning (SPAL). It is challenging to use a laser scanner because it provides only front-side circumference of any detected objects in a measurement area. Unlike cameras, a laser scanner poses no privacy problem because it does not recognize and record an individual. SPAL includes many important factors when calculating people's attention, i.e., lingering time, direction of people, distance between people and a target object. To obtain such information for calculation, we develop three processing modules to extract information from raw data measured by a laser scanner. We define two attention metrics and two measurement models to compute people's attention. To validate the proposed system, we implemented a prototype of SPAL and conducted experiments in the real-world environment. The results show that the proposed system is a good candidate for determining people's attention. © 2009 SICE.

关键词： Object detection

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