Search Results 1-20 of 35

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  • Fluctuating Phenomena and Flow Control of Bubbly Two-Phase Flow Through Sudden Expansion Pipe

    VOUTSINAS Alexandros , SHAKOUCHI Toshihiko , TSUJIMOTO Koichi , ANDO Toshitake

    … The fluctuating flow phenomena on a two-phase flow through a vertical sudden expansion pipe system are investigated experimentally and visually. … The effect of the volumetric gas flow rate ratio within the range of bubbly flow is investigated. … Simple flow control methods are proposed and tested in comparison with the normal expansion case. …

    Journal of Fluid Science and Technology 4(1), 84-94, 2009

    J-STAGE 

  • Temporal Change of the Pressure Source Estimated by Tilt Records During the 2001 Hakone Swarm Activity  [in Japanese]

    DAITA Yasushi , TANADA Toshikazu , TANBO Toshiya , ITO Hiroshi , HARADA Masatake , MANNEN Kazutaka

    … We divide the period from May 23 to September 9 into five stages based on the changes in the direction and the rate of tilt at Komagatake Station. … The overall model during the whole period is composed of a Mogi-source at a depth of 7km (volumetric expansion: 7.1×10<sup>6</sup>m<sup>3</sup>) and two shallow open cracks (depth range 0-0.2km; …

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 54(5), 223-234, 2009

    J-STAGE  References (33) Cited by (3)

  • Infrared and Raman Study of the Charge-Ordered State in the Vicinity of the Superconducting State in the Organic Conductor β-(meso-DMBEDT-TTF)_2PF_6

    TANAKA Masayuki , YAMAMOTO Kaoru , URUICHI Mikio , YAMAMOTO Takashi , YAKUSHI Kyuya , KIMURA Shinya , MORI Hatsumi

    … Its infrared and Raman spectra change abruptly at 〜70K. … The amplitude of the charge order was estimated to be 0.5 from the splitting of the infrared-active C=C stretching mode. … The coexistence of both high-temperature and low-temperature signals was observed in a narrow temperature range (〜4K) near the phase transition temperature. … The pressure and temperature phase diagram was obtained in the vicinity of the superconducting phase. …

    Journal of the Physical Society of Japan 77(2), "24714-1"-"24714-8", 2008-02-15

    References (39)

  • Infrared and Raman Study of the Charge-Ordered State in the Vicinity of the Superconducting State in the Organic Conductor β-(<I>meso</I>-DMBEDT-TTF)<SUB>2</SUB>PF<SUB>6</SUB>

    Tanaka Masayuki , Yamamoto Kaoru , Uruichi Mikio , Yamamoto Takashi , Yakushi Kyuya , Kimura Shinya , Mori Hatsumi

    … Its infrared and Raman spectra change abruptly at ∼70 K. … The amplitude of the charge order was estimated to be 0.5 from the splitting of the infrared-active C=C stretching mode. … The coexistence of both high-temperature and low-temperature signals was observed in a narrow temperature range (∼4 K) near the phase transition temperature. …

    Journal of the Physical Society of Japan 77(2), 024714-024714, 2008

    J-STAGE 

  • Correlation Field Splitting of Intramolecular Vibrations of Crystalline Tetracene in Terahertz Region

    Yago Tomoaki , Ishikawa Youichi , Ito Hiromasa , Tanaka Hiromasa , Kwon Eunsang , Sakamoto Kenkichi , Suto Ken , Watanabe Minro , Nishizawa Jun-ichi

    … Over the frequency range of 1 to 6 THz (33 to 200 cm<SUP>−1</SUP>), THz absorptions corresponding to phonon and intramolecular vibrational modes were confirmed. … Furthermore, the intramolecular vibrational modes exhibited correlation field splitting that originated from crystallization. …

    Japanese Journal of Applied Physics 44(6A), 4145-4150, 2005

    J-STAGE 

  • Efficient Construction of Regression Trees with Range and Region Splitting

    MORIMOTO Y.

    Machine Learning 45(3), 235-259, 2001

    DOI  Cited by (1)

  • Optical Study on Electronic Structure of Rare-Earth Sesquioxides

    KIMURA Shin-ichi , ARAI Fumitaka , IKEZAWA Mikihiko

    … R = La, Pr, Nd, Sm, Eu, Er, Tm, Yb and Lu) single crystals have been measured in the photon energy range from 0.5 to 50 eV at 300 K. … The absorption due to an intra-atomic optical transition of R4f → R5d6s was observed in the same energy region as the charge transfer excitation of O2p → R5d6s in the energy range of 6-15 eV. …

    Journal of the Physical Society of Japan 69(10), 3451-3457, 2000-10-15

    References (29)

  • Optical Study on Electronic Structure of Rare-Earth Sesquioxides.

    Kimura Shin-ichi , Arai Fumitaka , Ikezawa Mikihiko

    … = La, Pr, Nd, Sm, Eu, Er, Tm, Yb and Lu) single crystals have been measured in the photon energy range from 0.5 to 50 eV at 300 K. … R 5d6s was observed in the same energy region as the charge transfer excitation of {O} 2p → … R 5d6s in the energy range of 6–15 eV. … R 5d6s transition and the R 5p → …

    Journal of the Physical Society of Japan 69(10), 3451-3457, 2000

    J-STAGE 

  • Effect of Reinforcement Orientation on the Impact Fracture of Carbon Fiber Reinforced 7075-T6 Aluminum Matrix Composite

    Lee Woei-Shyan , Sue Wu-Chung , Chiou Su-Tang

    … The impact response and fracture characteristics of 7075-T6 aluminum alloy reinforced with 10% <I>V</I><SUB>f</SUB> … laminated carbon fiber are studied experimentally with regard to the relations between mechanical properties, reinforcement orientation, strain rate and temperature. …

    Materials Transactions, JIM 41(8), 1055-1063, 2000

    J-STAGE 

  • Magnetic Properties of Single-Crystal TmNi

    Endo Masato , Umehara Izuru , Adachi Yoshiya , Lu Qing Feng , Sato Kiyoo

    … The temperature dependence of specific heat was measured in the temperature range from 1.4 to 80 K by the adiabatic method and two transitions were observed at 2.7 and 3.8 K. … In addition, the Schottky-type specific heat was observed and it was discussed on the basis of energy level splitting due to crystalline electronic field effect. … We proposed the magnetic structure in the lower temperature region. …

    Materials Transactions, JIM 39(12), 1220-1224, 1998

    J-STAGE 

  • Efficient Construction of Regression Trees with Range and Region Splitting  [in Japanese]

    ISHII Hiromu , MORIMOTO Yasuhiko , MORISHITA Shinichi

    … In recent years data mining has attracted many researchers among both artificial intelligence and database communities. … A regression tree is a rooted binary tree such that each internal node contains a test for splitting tuples into two disjoint classes. … To test a numerical attribute, traditional methods use a guillotine-cut splitting that classifies data into those below a given value and others. …

    IEICE technical report. Data engineering 97(417), 57-62, 1997-12-02

    References (13)

  • Efficient Construction of Regression Trees with Range and Region Splitting  [in Japanese]

    ISHII Hiromu , MORIMOTO Yasuhiko , MORISHITA Shinichi

    … In recent years data mining has attracted many researchers among both artificial intelligence and database communities. … A regression tree is a rooted binary tree such that each internal node contains a test for splitting tuples into two disjoint classes. … To test a numerical attribute, traditional methods use a guillotine-cut splitting that classifies data into those below a given value and others. …

    IEICE technical report. Artificial intelligence and knowledge-based processing 97(415), 57-62, 1997-12-02

    References (13) Cited by (1)

  • Constructing Decision Trees with Range and Region Splitting : Evaluation of Effectiveness of Region Splitting  [in Japanese]

    MORIMOTO Yasuhiko , FUKUDA Takeshi , MORISHITA Shinichi , TOKUYAMA Takeshi

    … For each pair of numeric attributes with strong correlation, we compute a region with respect to these attributes and the objective attribute and use the region in decision trees. … Diverse experiments show that this method can produce compact and accurate trees. …

    IPSJ SIG Notes 46, 9-16, 1997-07-24

    References (16) Cited by (1)

  • Construction of Regression Trees with Range and Region Splitting

    MORIMOTO Y.

    The 23rd VLDB Conference (1997), 166-175, 1997

    Cited by (8)

  • Implementation and evaluation of decision trees with range and region splitting

    MORIMOTO Y.

    Constraint 2, 401-427, 1997

    DOI  Cited by (1)

  • Investigation on Voltage Life of Mica-Alumina Combined Insulation at High Temperatures

    Mitsui Hisayasu , Kumazawa Ryoji , Aizawa Rie , Okamoto Tatsuki , Ito Tetsuo , Kanegami Masaki

    … Experiments and investigations were carried out on voltage life of a bar coil model with a nickel plated copper conductor covered with mica-alumina combined insulation at a temperature range of 550-850°C.<br>Diffusion of copper into the insulation layer was observed on the specimens aged for a long period. … The insulation with mica paper was faster in the diffusion speed and shorter in the voltage life than the insulation with mica splitting. …

    IEEJ Transactions on Fundamentals and Materials 117(8), 839-845, 1997

    J-STAGE 

  • Theory of the Quasiparticle Spectra around a Vortex in the Two-Dimensional t-J Model.

    Himeda Akihiro , Ogata Masao , Tanaka Yukio , Kashiwaya Satoshi

    … The results show that, in the wide range of doping rates, the pair potential has d-wave nature and the local density of states near the core center shows a zero-energy peak. … However, in the low-doping region, an s-wave component is locally induced around the core and the zero-energy peak splits into two levels. … 75 (1995) 2200]which demonstrates the splitting of the local density of states. …

    Journal of the Physical Society of Japan 66(11), 3367-3370, 1997

    J-STAGE 

  • Implementation and Evaluation of Decision Trees with Range and Region Splitting

    MORIMOTO Y.

    Constraints, 402-427, 1997

    Cited by (2)

  • Implementation and evaluation of decision trees with range and region splitting

    MORIMOTO Y.

    Constraint 2, nos.(3-4), 163-189, 1997

    Cited by (2)

  • Numerical analysis of wake flow behind hypersonic vehicle  [in Japanese]

    Ro D.S. , 木村 雄吉 , 小川 和彦 , Ro Dae Sung , Kimura Takeyoshi , Ogawa Kazuhiko

    … The flow field behind a blunt based bodies was investigated with numerical simulation at a nominal Mach number of 5.7, 8.5, 10.0 over a range of Reynolds numbers from 50,000 to 335,000 based on the body length. … The finite volume formulation of Van Leer's flux vector splitting upwind scheme, in generalized coordinates, was used to solve thin-layer approximation of the Navier-Stokes equations for a hypersonic laminar flow. …

    航空宇宙技術研究所特別資料: 第11回航空機計算空気力学シンポジウム論文集 = Special Publication of National Aerospace Laboratory: Proceedings of the 11th NAL Symposium on aircraft computational aerodynamics (22), 73-78, 1994-03

    IR 

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