• Title/Summary/Keyword: Tokyo

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Development of Terra MODIS data pre-processing system on WWW

  • Takeuchi, W.;Nemoto, T.;Baruah, P.J.;Ochi, S.;Yasuoka, Y.
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.569-572
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    • 2002
  • Terra MODIS is one of the few space-borne sensors currently capable of acquiring radiometric data over the range of view angles. Institute of Industrial Science, University of Tokyo, has been receiving Terra MODIS data at Tokyo since May 2001 and Asian Institute of Technology at Bangkok since May 2001. They can cover whole East Asia and is expected to monitor environmental changes regularly such as deforestation, forest fires, floods and typhoon. Over eight hundred scenes have been archived in the storage system and they occupy 2 TB of disk space so far. In this study, MODIS data processing system on WWW is developed including following functions: spectral subset (250m, 500m, 1000m channels), radiometric correction to radiance, spatial subset of geocoded data as a rectangular area with latitude-longitude grid system in HDF format, generation of a quick look file in JPEG format. Users will be notified just after all the process have finished via e-mail. Using this system enables us to process MODIS data on WWW with a few input parameters and download the processed data by FTP access. An easy to use interface is expected to promote the use of MODIS data. This system is available via the Internet on the following URL from September 1 2002, "http : //webmodis.iis.u-tokyo.ac.jp/".

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Analysis of Vessel Traffic in Tokyo Bay Observed by New Remote Radar Network System

  • Okano, Tadashi;Ohtsu, Kohei;Hagiwara, Hideki;Shoji, Ruri;Tamaru, Hitoi;Liu, Shun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2004.08a
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    • pp.208-216
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    • 2004
  • Since 2000, the authors have been developing remote radar network system to observe the vessel traffic in Tokyo Bay. In December 2002, the first operational remote radar station was set at the National Defense Academy in Yokosuka, and vessel traffic observation was started. However, it was impossible to perform accurate observation in the northern part of Tokyo Bay by this Yokosuka radar station only. In September 2003, the second remote radar station and AIS receiving station were installed at Higashi Ogishima in Kawasaki. This second radar enabled us to carry out accurate observation in that area. Both radars can be remotely controlled from the monitoring station in Tokyo University of Marine Science and Technology. On September 30 and October 1,2003, the vessel traffic observation was carried out using both radars. Combining radar images observed by both radars, the ships' tracks were taken and the dangerous ships were extracted by using SJ value and Bumper Model. The time changes of dangerous ship density in some areas in Tokyo Bay and utilization ratio of the traffic routes were also investigated. In addition, analyzing the AIS date received at Kawasaki station, the positions and speed vectors of the ships equipped with AIS were shown.

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Efficient and User-Friendly Image Retrieval System Based on Query by Visual Keys

  • Serata, M.;Sakuma, K.;Stejic, Z.;Kawamoto, K.;Nobuhara, H.;Yoshida, S.;Hirota, K.
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2003.09a
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    • pp.451-454
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    • 2003
  • A new query method, called query by visual keys, is proposed to aim easy operation and efficient region-based image retrieval (RBIR). Visual keys are constructed from representative regions/subimages in a given image database, and the database is indexed with visual keys. A system on PC is presented, where text retrieval techniques are applied to the image retrieval with visual keys. Experimental results show that one retrieval is done within 4ms and that the proposed system achieves the comparable retrieval precision (with user-friendly operation and low computational cost) to conventional region based image retrieval systems

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Interface formation between tris-(8-hydroxyquinoline) aluminum and room temperature stable electride: C12A7:$e^-$

  • Kim, Ki-Beom;Kikuchi, Maiko;Miyakawa, Masashi;Yanagi, Hiroshi;Kamiya, Toshio;Hirano, Masahiro;Hosono, Hideo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.235-238
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    • 2006
  • Interface formation between $12CaO{\cdot}7Al_2O_3(C12A7:e^-)$ and Alq3 was investigated using in-situ ultra-violet photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS). The work function and vacuum level shift of $C12A7:e^-$ were change by different surface treatment from 2.6eV to 4.2eV. Also vacuum level shift $(\Delta)$ at the interface were from +0.3eV to -0.3eV.

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WIDE-FIELD IMAGING WITH MOSAIC CCD CAMERAS

  • OKAMURA S.;DOI M.;KAWASAKI W.;KOMIYAMA Y.;SHIMASAKU K.;YAGI M.;YASUDA N.;KASHIKAWA N.;SEKIGUCHI M.
    • Journal of The Korean Astronomical Society
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    • v.29 no.spc1
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    • pp.375-378
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    • 1996
  • An outline is given of our development of mosaic CCD cameras. Hardware and data reduction software of two operational cameras are described. Scientific objectives of wide-field imaging with the cameras are briefly described.

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Micro-shear bond strength of resin-bonding systems to cervical enamel.

  • Shimada, Y.;Kikushima, D.;Iwamoto, N.;Shimura, R.;Ide, T.;Nakaoki, Y.;Tagami, J.
    • Proceedings of the KACD Conference
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    • 2001.11a
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    • pp.560.1-560
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    • 2001
  • To evaluate the micro-shear bond strength of current adhesive systems to cervical and mid-coronal enamel. Materials and Two commercially available resin adhesives were investigated; a self-etching primer system(Clearfil SE Bond, Kyraray) and a one-bottle adhesive system(Single Bond, 3M) intended for use with the total-etch wet-bonding technique were employed. Two regions of enamel, cervical and mid-coronal regions, were chosen from the buccal surface of extracted molars and were then bonded with each adhesive system and submitted to the micro-shear bond test.(중략)

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