Papers

Number of the published data : 55
No. Publishing type Authorship Title Author Journal Publisher Volume/issue/page Publication date ISSN DOI URL Summary
1 Research paper (international conference proceedings)
Joint
Merging Control Strategy with a Waiting-time Limit in a Personal Rapid Transit System
Takafumi KOMURO, Kazuhiro TSUBOI, Takahiro HOSHINO, Yoshio HAMAMATSU
The International Conference on Electrical Engineering 2016
The Institute of Electrical Engineers of Japan
1-6
2016/07/06




2 Research paper (scientific journal)
Joint
A Metaheuristic Algorithm with Hybrid Insertion Procedure for the Traveling Salesman Problem
Takahiro Hoshino, Chuan Tian, Hisashi Kondo, Kazuhiro Tsuboi, Yoshio Hamamatsu
International Journal of Computer Science Issues

13/ 3, 1-8
2016/05
1694-0784
10.20943/01201603.18


3 Research paper (scientific journal)
Joint
A Control Strategy with Waiting Time Limit in a Merging Section on Personal Rapid Transit System
Takafumi Komuro, Takahiro Hoshino, Kazuhiro Tsuboi, Yoshio Hamamatsu
IEEJ Transactions on Industry Applications

135/ 12, 1181-1190
2015/12

10.1541/ieejias.135.1181


4 Research paper (scientific journal)
Joint
Optimum Angle in Projection with Initial Speed \\Depending on Angle
Kazuhiro Tsuboi, Takahiro Hoshino, Yoshio Hamamatsu
日本応用数理学会論文誌

25/ 4, 255-266
2015/12




5 Research paper (scientific journal)
Joint
A model for merging sections in transportation systems and its analysis
HOSHINO Takahiro, TIAN Chuan, KOMURO Takafumi, TSUBOI Kazuhiro, HAMAMATSU Yoshio
IEEJ Trans. IA

135/ 2, 155-161
2015/02

10.1541/ieejias.135.155


6 Research paper (scientific journal)
Joint
Estimation of aerodynamic coefficients for a ball by using characteristics of trajectory
Kaito YASUDA, Kazuhiro TSUBOI, Kohei TANAKA and Takeshi MIYAZAKI
Transactions of the JSME (in Japanese)

80/ 814, 1-10
2014/06/25

10.1299/transjsme.2014bms0176

スポーツで使用されるボールの空力係数を飛翔中の軌道形状データから求める方法を検証した.軌道形状の特徴量として,大域的形状を表わす量(飛距離や最大高さなど)と局所的に決まる量(曲率や捩率など)をそれぞれ考えた.前者を用いた方法では,特徴量の実測値と運動方程式による予測値の誤差を最小化することで空力係数を決定した.この方法でサッカーボールの空力係数の推定を行い妥当な結果が得られた.また,後者に基づく方法では空間曲線論を用いて局所的量と空力係数を関連付けた.この方法を卓球ボールの測定結果に適用することで,軌道に沿った空力係数の変化を評価することができた.
7 Research paper (international conference proceedings)
Joint
Aerodynamic Coefficients Estimation based on Local Geometry of Ball Trajectory
Kazuhiro Tsuboi and Kaito Yasuda
Proceedings of the International Association of Computer Science in Sport Conference (IACSS2014)


2014/06/22
978-0-9925475-0-9



8 Research paper (scientific journal)
Joint
Analysis of traffic congestion by considering merging on entry lines in transportation system
Takahiro Hoshino, Kazuhiro Tsuboi and Yoshio Hamamatsu
Electronics and Communications in Japan
Wiley Periodicals, Inc.
95/ 8, 34-43
2012/08




9 Research paper (scientific journal)
Joint
Application of Eulerian Approach to Simulate Hard Rime Accretion
Kazuhiro Tsuboi & Shigeo Kimura
Journal of Adhesion Science and Technology

26/ 4-5, 505-521
2012/07/24
1568-5616
10.1163/016942411X574646


10 Research paper (scientific journal)
Only
The Maximum Projection Angle of a Projectile under Drag and Lift
Kazuhiro TSUBOI
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C

78/ 790, 1972-1983
2012/06/25
1884-8354
10.1299/kikaic.78.1972

抵抗係数と揚力係数が一定の空気力が働く投射体の軌道を質点の運動で近似し,その最大投射角について考察した.速度に比例する空気力の働く質点の運動方程式から最大投射角を抵抗係数と揚力係数の摂動解として第2次項まで求めた.また,速度の自乗に比例する空気力に対する運動方程式から最大投射角の数値解を求めた.これらから抵抗と揚力が最大投射角に与える影響を評価した結果,空気力により最大投射角は減少する,減少の程度は抵抗より揚力の方が大きい,最大投射角は抵抗係数と揚力係数の2次式によって近似できる,などの結論が得られた
11 Research paper (scientific journal)
Joint
Operation of vehicles in AGV system and method for analyzing operation
Takahiro Hoshino, Kazuhiro Tsuboi, Kazuo Yamanaka, Yoshio Hamamatsu
Electrical Engineering in Japan

178/ 1, 56–68
2012/01/15

10.1002/eej.21190


12 Research paper (scientific journal)
Joint
Analysis of Traffic Congestion by Considering Merging on Entry Lines in Transportation System
HOSHINO Takahiro, TSUBOI Kazuhiro, HAMAMATSU Yoshio
IEEJ Trans. IA

131/ 8, 1059-1067
2011

10.1541/ieejias.131.1059


13 Research paper (scientific journal)
Joint
Application of a Projection Model Including the Effect of Run-Up to Sports Activities
Kazuhiro TSUBOI and Yasuaki KONAGAYA
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C

77/ 782, 3750-3760
2011/10/25
1884-8354
10.1299/kikaic.77.3750

スポーツ競技で見られる助走を伴う投射に対する力学モデルとして3変数モデルを考察した.このモデルには投射時の水平速度,投射速度,投射角の3変数が含まれ,これらによって人体の体幹部と肢体の動きに付随する最小限の自由度を表現される.3変数投射モデルから初速度と初速角の間の関係式を導出し,それが助走を伴う投射に適した関数形であることを確認した.砲丸投げと走り幅跳びの実測データによる拘束条件と比較し,3変数モデルから最適初速角や最適初速度が推定できることを示した.このことから3変数モデルは初速度と初速角の間の拘束条件を含んだ投射モデルと考えることができ,助走を伴う投射モデルに対する力学的根拠を与える.
14 Research paper (scientific journal)
Only
Characterization of Throwing Technique in Shot Put by Using Release Model with Three Degrees of Freedom
TSUBOI Kazuhiro
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C

77/ 775, 943-952
2011/03

10.1299/kikaic.77.943

助走の効果を含む3自由度投射モデルによって砲丸投げ投法の力学的差異について考察した.このモデルは砲丸の押し出し速度,押し出し角と助走の効果を表わす身体の移動速度からなる3個のパラメータで表現される.投射が最適な角度で行われたと仮定して,実測値からこれらのパラメータ値を推定した.その結果,押し出し速度と身体移動速度の間には投法によらず強い負の相関があり,これらの速度の間に緊密な関係があることを確認した.また,グライド投法と回転投法では身体移動速度の分布や最適押し出し角に違いがあることがわかった.このことは3自由度投射モデルによる砲丸投げ投法の力学的な特徴付けの可能性を示唆する結果と考えられる.
15 Research paper (international conference proceedings)
Only
A mathematical solution of the optimum takeoff angle in long jump
TSUBOI Kazuhiro
Procedia Engineering

2/ 2, 3205-3210
2010/06/11

10.1016/j.proeng.2010.04.133


16 Research paper (scientific journal)
Joint
Operation of Vehicles in AGV System and Method for Analyzing the Operation
HOSHINO Takahiro, TSUBOI Kazuhiro, YAMANAKA Kazuo,
HAMAMATSU Yoshio
IEEJ Trans. IA

129/ 2, 173-183
2009




17 Research paper (international conference proceedings)
Joint
Lateral Excitation between Dissimilar Orientation Columns for Ongoing Subthreshold Membrane Oscillations in Primary Visual Cortex
NAKAMURA Yuto, TSUBOI Kazuhiro and HOSHINO Osamu
Artificial Neural Networks - ICANN 2008

318-327
2008




18 Research paper (scientific journal)
Joint
A Study of a Merging Section of PRT System with Bulk Arrival and Its Control Strategy
HOSHINO Takahiro, INOUE Kousuke, TSUBOI Kazuhiro,
HAMAMATSU Yoshio
IEEJ Trans. IA

128/ 1, 48-55
2008



This paper deals with a merging section of Personal Rapid Transit system with bulk arrival. Vehicles
arrive at a merging section from a main line and a sub line. Basically, vehicles on the main line have priority.
Therefore a queue is formed only on the sub line. In this situation, the queuing delay on the sub line may
become extremely long. We propose a control strategy whereby vehicles on the main line are usually not
stopped; vehicles on the main line are only stopped when the number of waiting vehicles on the sub line
exceeds some specific number. This specific number is a sort of threshold. Thus, queues are formed on the
main line and the sub line, respectively. The both of queuing delays are controlled by the threshold. The
optimal value of threshold is obtained from the result of analyzing the Markov chain model.
19 Research paper (scientific journal)
Only
The Optimum Angle of Takeoff in Long Jump with Vertical Displacement at Landing
TSUBOI Kazuhiro
日本機械学会論文集C編

74/ 743, 1841-1848
2008/07



In long jump, it is possible to estimate a distance between takeoff and landing by assuming that the center of mass of a long jumper in aerial phase moves along a trajectory of projectile. Based on the assumption, we obtain an approximate trajectory of the jumper as a perturbed solution of flat aerial path, in which the effect of air drag is included as the linear form. Also, a maximization problem is formulated from the trajectory and the optimum angle of takeoff is theoretically derived. Then, we introduce two parameters, the horizontal velocity of the center of mass and the takeoff velocity into the present model of takeoff. In particular, the solution of the optimum angle includes the effect of vertical displacement at landing which affects significantly a distance of the aerial phase. The distance of the aerial phase and the takeoff angle are estimated in several cases of measured data. The results of the estimation show the effectiveness of the present solutions.
20 (MISC) Introduction and explanation (international conference proceedings)
Joint
Application of Optimization Technique to Solution of Incompressible Navier-Stokes Equation
Kazuhiro Tsuboi, Kenji Sasajima
Proceedings of 5th AIAA Theoretical Fluid Mechanics Conference

2008-4101, 1-15
2008/06/24



We introduce the concept of optimization to computational method of incompressible flows based on the formal correspondence of incompressible Navier-Stokes equation in
rotational form and continuity equation to state and output equations of dynamical system. The total pressure field is, then, determined as the result of error minimization of continuity equation and no boundary condition for total pressure is necessary in the case of
computational grid system in which no pressure value is defined on the boundary grid. A computational method based on the optimization concept is formulated and applied to plane Poiseuille flow and two-dimensional driven cavity flow problems. The computational results show the effectiveness of this computational method.
21 (MISC) Introduction and explanation (international conference proceedings)
Joint
Some Remarks on Basic Equations of Eulerian Approach in Icing Problems
TSUBOI Kazuhiro, KIMURA Shigeo
Proceedings of 12th INTERNATIONAL WORKSHOP ON ATMOSPHERIC ICING OF STRUCURES (IWAIS2007) (CD-ROM)


2007/10/10



Category 2: Modelling & Simulation of Icing I
Date: October, 10 Wednesday 8:30 – 10:00
2-4
22 Research paper (scientific journal)
Joint
An analytic solution of projectile motion with the quadratic resistance law using the homotopy analysis method
YABUSHITA Kazuki, YAMASHITA Mariko and TSUBOI Kazuhiro
JOURNAL OF PHYSICS A: MATHEMATICAL AND THEORETICAL

40, 8403–8416
2007/07

10.1088/1751-8113/40/29/015


23 (MISC) Book review and document introduction, etc.
Only
書評「2点境界値問題の数理」
坪井 一洋
応用数理
岩波書店
17/ 1, 87-88
2007/03




24 Research paper (scientific journal)
Joint
2流体モデルによる粗氷形成の数値シミュレーション
坪井一洋,木村茂雄
シミュレーション

25/ 4, 297-305
2006/12/15




25 Research paper (scientific journal)
Joint
風力タービンブレード上の着氷解析コードの開発
木村茂雄,佐藤威,坪井一洋,森川浩司
日本雪氷学会誌

68/ 5, 393-407
2006/09




26 Research paper (scientific journal)
Only
Particle Density Field in Low Stokes Number Region of 2-fluid Saffman Equation
TSUBOI Kazuhiro
日本応用数理学会論文誌

16/ 1, 1-14
2006/03




27 Research paper (international conference proceedings)
Only
Computational Investigation on Flow Field of Particle Phase in 2-fluid Saffman Equation
TSUBOI Kazuhiro
AIAA paper

2004/ 2647, 1-9
2004/06




28 Research paper (international conference proceedings)
Only
Density Distribution in Stagnation Region of Saffman Eqaution for Dusty Gas
TSUBOI Kazuhiro
ASME PVP

448/ 1, 139-146
2002/08



Proc. the 4th Int. Symp. on Computational Technologies for Fluid/Thermal/Chemical Systems with Industrial Applications, Volume 1
29 Research paper (international conference proceedings)
Only
Computational and Analytical Study on Particle Flow Field around a Circular Cylinder
TSUBOI Kazuhiro
AIAA paper

2001-2650, 1-9
2001




30 Research paper (scientific journal)
Joint
Aerodynamic characteristics of an iced cup-shaped body
KIMURA Shigeo, ABE ken'ichi, TSUBOI Kazuhiro, Tammelin Bengt, SUZUKI Kohji
Cold Regions Science and Technology

33/ 1, 45 - 58
2001/10




31 Research paper (international conference proceedings)
Joint
Particle flow around an oscillating Circular Cylinder based on two-fluid model
TSUBOI Kazuhiro, KIMURA Shigeo
ASME PVP

424/ 1, 29-37
2001/07



Proc. the 3rd Int. Symp. on Computational Technologies for Fluid/Thermal/Chemical Systems with Industrial Applications, Volume 1
32 (MISC) Introduction and explanation (others)
Joint
着氷のシミュレーション
木村茂雄,坪井一洋
シミュレーション

20/ 1, 62-65
2001/03




33 Research paper (international conference proceedings)
Joint
Computational Study on Local Impingement Efficiency of an Oscillating Circular Cylinder
TSUBOI Kazuhiro, KIMURA Shigeo
AIAA paper

2000/ 2661, 1-14
2000




34 Research paper (scientific journal)
Only
Condition Number of Tridiagonal Matrix in Stretching Coordinates System
坪井一洋
Transactions of Japan Society for Industrial and Applied Mathematics

10/ 2, 133-144
2000




35 Research paper (international conference proceedings)
Joint
Numerical Simulation of Ice Accretion on a Body with Droplet Flow Model
TSUBOI Kazuhiro, KIMURA Shigeo
AIAA paper

99/ 3333, 1-7
1999




36 Research paper (scientific journal)
Joint
Investigation on Ice Accretion Rate of Oscillating Body
坪井一洋,木村茂雄
Journal of Japan Society of Fluid Mechanics

18/ 2, 107-110
1999




37 Research paper (international conference proceedings)
Joint
Formulation of Basic equations of Droplet flows with the Diameter Distribution

Proceediugs of The Third International Confenence on Fluid Mechanics, Beijing

663-668
1998




38 Research paper (international conference proceedings)
Joint
Numerical Study of the Effect of Droplet Distribution in Incompressible Droplet Flows
Tsuboi Kazuhiro, Kimura Shigeo
AIAA paper

98/ 2561, 1-9
1998/06




39 Research paper (scientific journal)
Joint
装置周辺の空気の流れの可制御性とその制御法の一提案
白石昌武,出山浩行,柴田智和,坪井一洋
精密工学会誌

64/ 5, 700-704
1998/05/05




40 Research paper (scientific journal)
Joint
ゆっくり変動するモード間の共振的結合を伴う非線型偏微分方程式の数値シミュレーション
坪井一洋,ミハエル・トリベルスキー
日本応用数理学会論文誌

7/ 4, 43-52
1997




41 Research paper (scientific journal)
Joint
New Scenario for Transition to Turbulence ?
Michael Tribelsky, Kazuhiro Tsuboi
Physical Review Letters

76/ 10, 1631
1996




42 Research paper (scientific journal)
Only
On the Optimum Angle of Takeoff in Long jump.
坪井一洋
Transactious of Japan Society for Industrial and Applied Mathematics.

6/ 4, 393
1996




43 Research paper (scientific journal)
Joint
天文台ドーム内の3次元流れに関する数値実験
坪井一洋,宮腰佳代,長澤幹夫,海部宣男,桑原邦郎
日本流体力学会誌「ながれ」

12/ 3, 275
1993




44 Research paper (international conference proceedings)
Joint
An approach to incompressible flow problems with a massively parallel computer
TSUBOI Kazuhiro, MIYAKOSHI Kayo, KUWAHARA Kunio
Proceedings of Parallel Computational Fluid Dynamics '91, Elsevier

343-353
1992



Edited by K. G. Reinsch, W. Schmidt, A. Ecer, J.H user, J.Periaux
45 (MISC) Introduction and explanation (others)
Joint
Fluid dynamics and Parallel computation
TSUBOI Kazuhiro, KUWAHARA Kunio
Computrol

40, 15
1992




46 Research paper (scientific journal)
Joint
Computational Study of unsteady viscous flow around a transversely and longitudinally oscillating circular cylinder in a uniform flow at high Reynolds numbers
RAO P. M., KUWAHARA Kunio, TSUBOI Kazuhiro
Computational Mechanics

10/ 6, 414-428.
1992/06




47 Research paper (scientific journal)
Joint
Simulation of unsteady viscous flow around a lon-gitudinally oscillating cir-cular cylinder in a uniform flow.
P. M. Rao, Kunio KUWAHARA, Kazuhiro TSUBOI
Appl. Mech. Modelling

16/ 1, 26-35
1992/01




48 Research paper (international conference proceedings)
Joint
Incompressible flow simulations with solid models in rectangular grid system
TSUBOI Kazuhiro, MIYAKOSHI Kayo, KUWAHARA Kunio
Numerical Grid Generation in Computational Fluid Dynamics and Related Fields, North-Holand

379-390
1991



Proceedings of Numerical Grid Generation in Computational Fluid Dynamics and Related Fields, ed. A.S.-Arcilla, J.H user, P.R.Eiseman, J.F.Thompson
49 Research paper (scientific journal)
Joint
Incompressible Flow Simulation of Complicated Boundary Problems with Rectangular Grid System
TSUBOI Kazuhiro, MIYAKOSHI Kayo, KUWAHARA Kunio
Theoretical and Applied Mechanics

40, 297-309
1991




50 Research paper (international conference proceedings)
Joint
Computational Study of the Effect of Base Slant
TSUBOI Kazuhiro, SHIRAYAMA Susumu, OANA M., KUWAHARA Kunio
Supercomputer Applications in Automotive Research and Engineering Development, ed. C. Marino, North-Holland

257-272
1988



Proc. 2-nd Int. Conf. on Supercomputing Application and Automotive Industry, Cray Research, Inc.
51 Research paper (international conference proceedings)
Joint
Numerical Simulation of Unsteady Flow Patterns around a Vibrating Cylinder
T. Tamura, K.Tsuboi, K. Kuwahara
AIAA paper

88/ 0128, 1-11
1988/01



26th Aerospace Sciences Meeting,
AIAA-88-0128, pp. 1-11.
52 Research paper (international conference proceedings)
Joint
Numerical Study of Two-dimensional Vortex Street
TSUBOI Kazuhiro, OHSHIMA Yuko
Numerical Methods in Fluid Mechanics

1, 230-237
1986/10




53 Research paper (international conference proceedings)
Joint
Computational Study of the Effect of Base Slant
K. Tsuboi, R. Himeno, S. Shirayama, K. Kuwahara
AIAA paper

86/ 1054, 1-7
1986/05



ASME/AIAA 4th Fluid Mechanics, Plasma Dy-namics and Lasers Conference
54 Research paper (scientific journal)
Joint
Merging of Two Dimensional Vortices by the Discrete Vortex Method
TSUBOI Kazuhiro, OHSHIMA Yuko
Journal of the Physical Society of Japan

54/ 6, 2137-2145
1985




55 (MISC) Introduction and explanation (bulletin of university, research institution)
Joint
Numerical Study of Two-dimensional Vortex Street
TSUBOI Kazuhiro, OSHIMA Koichi
The Institute of Space and Astronautical Science Report SP

3, 17-30
1985/03



Proc. of the Symposium on Mechanics for Space Flight