[English|Japanese]

Kazuto TAKASHIMA, Ph. D.


Affiliation

Associate Professor
Department of Biological Functions Engineering
Graduate School of Life Science and Systems Engineering
Kyushu Institute of Technology
Hibikino 2-4, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0196, Japan
Phone/Fax: +81.93.695.6030
e-mail: ktakashima/life.kyutech.ac.jp (Note: Slashe (/) has been substituted for "@" in e-mail address. Be sure to correct.)

Biography

1997 / 3 BS, Mechanical Engineering, Kyoto University
1999 / 3 MS, Mechanical Engineering, Kyoto University
1999/ 4-2003 / 9 Matsushita Electric Industrial Co., Ltd.
2003/ 11-2004 / 3 Research Assistant at the Graduate School of Medicine in Kyoto University (The 21st Century COE Program)
2004/ 5-2005 / 2 Research Assistant at the Graduate School of Engineering in Kyoto University (The 21st Century COE Program)
2004/ 10-2005 / 2 Technical Training at the National Institute of Advanced Industrial Science and Technology (Institute for human science and biomedical engineering)
2005/ 4 - 2006/3 Research Fellow of the Japan Society for the promotion of science
2006/3 Ph.D. Mechanical Engineering, Kyoto University
2006/ 4 - 2010/7 Research Scientist at RIKEN
2010/ 9 - 2015/3 Adjunct Research Scientist at RIKEN
2010/ 8 - present Kyushu Institute of Technology

Honors and Awards
2005 / 5 Best Paper Award, CME2005
2013 Smart Materials and Structures - Highlights of 2012
2013/5/23 Journal of Robotics and Mechatronics (JRM) award
2013/12/20 Excellent presentation award at SI 2013
2014/12/17 Excellent presentation award at SI 2014

Publications
1. Journal Papers

1) Y. S. Zhou, M. Ohashi, N. Tomita, K. Ikeuchi, K. Takashima,
 Study on the possibility of silicon nitride-silicon nitride as a material for hip prostheses,
 Materials science and engineering C 5 (1997) pp. 125-129.
2) K. Ikeuchi, K. Takashima, J. Kusaka,
 Friction and wear of materials for all-ceramic artificial joints,
 Orthopaedic ceramic implants vol. 18 (1998) pp. 29-31 (in Japanese).
3) J. Kusaka, K. Takashima, D. Yamane, K. Ikeuchi,
 Fundamental study for all-ceramic artificial hip joints,
 Wear 225-229 (1999) pp. 734-742.
4) K. Takashima, K. Yoshinaka, T. Okazaki, K. Ikeuchi,
 An endoscopic tactile sensor for low invasive surgery,
 Sensors & Actuators: A. Physical vol. 119 issue. 2 (2005) pp. 372-383.
5) K. Takashima, K. Yoshinaka, K. Ikeuchi,
 Study on vision-based tactile sensor for endoscopy,
 Japanese society for clinical biomechanics vol. 26 (2005) pp. 447-456 (in Japanese).
6) K. Takashima, S. Ota, M. Ohta, K. Yoshinaka, K. Ikeuchi,
 Development of computer-based simulator for catheter navigation in blood vessels (1st Report, Evaluation of fundamental parameters of guidewire and blood vessel)
 Transactions of the Japan Society of Mechanical Engineers C-072(719) (2006), pp.2137-2145 (in Japanese).
7) K. Takashima, K. Yoshinaka and K. Ikeuchi,
 Vision-based tactile sensor for endoscopy,
 Complex Medical Engineering (2007)pp. 13-23.
8) K. Takashima, R. Shimomura, T. Kitou, H. Terada, K. Yoshinaka, K. Ikeuchi,
 Contact and friction between catheter and blood vessel,
 Tribology International vol. 40 issue. 2 (2007), pp. 319-328.
9) K. Yoshinaka, K. Takashima, T. Okazaki, K. Ikeuchi, K. Chinzei, T. Washio,
 Surface friction of internal medical instrument controlled by magnetic field oscillation,
 Tribology International vol. 40 issue. 2 (2007), pp. 339-344.
10) K. Takashima, T. Kitou, K. Mori, K. Ikeuchi,
 Simulation and experimental observation of contact condition between stents and artery models,
 Medical Engineering & Physics vol. 29, issue 3 (2007) pp. 326-335.
11) K. Takashima, S. Ota, M. Ohta, K. Yoshinaka, T. Mukai,
 Development of computer-based simulator for catheter navigation in blood vessels (2nd Report, Evaluation of torquability of guidewire)
 Transactions of the Japan Society of Mechanical Engineers C-73(735) (2007), pp.116-123.(in Japanese)
12) K. Takashima, S. Horie, T. Mukai, K. Ishida, K. Matsushige,
 Piezoelectric properties of vinylidene fluoride oligomer for use in medical tactile sensor applications,
 Sensors & Actuators: A. Physical vol. 144 (2008) pp. 2988-2995.
13) K. Takashima, N. Kamamichi, T. Yagi, K. Asaka, T. Mukai,
 Cytotoxicity test and mass spectrometry of IPMC,
 Transactions of IEE of Japan C, Vol.28, No.7 (2008) pp.1029-1035.(in Japanese)
 (The translation ia published on Electronics & Communications in Japan, vol.93 issue 1 (2009) pp. 1-8.)
14) K. Takashima, S. Horie, T. Mukai, K. Ishida, K. Matsushige,
 Piezoelectric properties of vinylidene fluoride oligomer for use in tactile sensor,
 Journal of the Robotics Soceity of Japan, Vol.26, No.6 (2008) pp.711-717 (in Japanese)
15) K. Takashima, H. Nakashima, T. Mukai, S. Hayashi,
 A scrub nurse robot for laparoscopic surgery,
 Advanced Robotics, Vol.22 (2008) pp.1585-1601.
16) M. Ohta, C. Yu, H. Kosukegawa, K. Mamada, K. Kuroki, S. Oota, K. Takashima, K. Yoshinaka,
 Development of in-vitro tracking system for catheter motion,
 Nano-Biomedical Engineering 2009 : A Tohoku University Global COE Programme Proceedings (Editor: T. Yamaguchi), Imperial College Press (2009) pp.83-89.
17) K. Takashima, K. Mori, K. Yoshinaka, T. Mukai,
 Numerical analysis of the mechanical properties of the Greenfield inferior vena cava filter,
 Transactions of the Japan Society of Mechanical Engineers C-75(752) (2009) pp.805-814 (in Japanese)
18) C. H. Yu, H. Kosukegawa, K. Mamada, K. Kuroki, K. Takashima, K. Yoshinaka, M. Ohta,
 Development of an in vitro tracking system with poly(vinyl alcohol) hydrogel for catheter motion,
 Journal of Biomechanical Science and Engineering, vol.5 no.1 (2010) pp. 11-17.
19) K. Takashima, N. Zhang, T. Mukai, S. Guo,
 Fundamental study of a position-keeping module using a shape-memory polymer,
 Journal of the Robotics Soceity of Japan, Vol.28, No.7 (2010) pp.905-912 (in Japanese).
20) K. Takashima, J. Rossiter, T. Mukai,
 McKibben artificial muscle using shape-memory polymer,
 Sensors & Actuators: A. Physical vol. 164 (2010) pp. 116-124.
21) N. Durand, B. Ameduri, K. Takashima, K. Ishida, S. Horie, Y. Ueda,
 Vinylidene fluoride telomers for piezoelectric devices,
 Polymer Journal, vol.43 (2011) pp.171-179.
22) K. Takashima, M. Takenaka, T. Mukai,
 Numerical analysis of palpation in vivo using tactile sensor composed of organic ferroelectrics —Effect of parameters of blood vessel on sensor output—,
 Journal of the Robotics Soceity of Japan, vol.30, no.2 (2012) pp.195-204 (in Japanese).
23) K. Takashima, T. Noritsugu, J. Rossiter, S. Guo, T. Mukai,
 Curved type pneumatic artificial rubber muscle using shape-memory polymer,
 Journal of Robotics and Mechatronics, vol.24 no.3 (2012) pp.472-479.
24) J. Rossiter, K. Takashima, T. Mukai,
 Shape memory properties of ionic polymer-metal composites,
 Smart Materials and Structures, vol.21, no.11 (2012) pp.1-7.
25) K. Takashima, H. Yamada,
 A microscale analysis of the displacement field for the bottom of endothelial cells under substrate stretching,
 Journal of Japanese Society of Biorheology, vol. 26, no. 3 (2012) pp.109-112 (in Japanese).
26) K. Takashima, S. Horie, M. Takenaka, T. Mukai, K. Ishida, Y. Ueda,
 Measurement of the piezoelectric properties of vinylidene fluoride oligomer using pneumatic pressure for tactile sensors,
 Journal of Solid Mechanics and Materials Engineering, vol.6, no.10 (2012) pp.975-988.
27) J. Rossiter, K. Takashima, F. Scarpa, P. Walters, T. Mukai,
 Shape memory polymer hexachiral auxetic structures with tunable stiffness,
 Smart Materials and Structures, vol.23, no.4 (2014) 045007 (11pp).
28) K. Takashima, K. Sugitani, N. Morimoto, S. Sakaguchi, T. Noritsugu, T. Mukai,
 Pneumatic artificial rubber muscle using shape-memory polymer sheet with embedded electrical heating wire,
 Smart Materials and Structures, vol.23, no.12 (2014) 125005 (9pp).
29) K. Takashima, S. Tsuzuki, A. Ooike, K. Yoshinaka, K. Yu, M. Ohta, K. Mori,
 Numerical analysis and experimental observation of guidewire motion in a blood vessel model,
 Medical Engineering & Physics, vol.36, issue 12 (2014) pp.1672-1683.
30) M. Takenaka, K. Hirami, K. Takashima,
 A thin plate type tactile sensor using a piezoelectric polymer -Basic study on evaluatlon of uneven surfaces-,
 Journal of the Robotics Soceity of Japan, vol.32, no.10 (2014) pp.903-913 (in Japanese).
31) M. Takenaka, K. Takashima,
 Surface profile measurements with a portable thin plate type sensor composed of a piezoelectric polymer,
 Journal of the Robotics Soceity of Japan, vol.34, no.9 (2016) pp.640-651 (in Japanese).
32) K. Takashima, H. Kamizono, M. Takenaka, T. Mukai,
 Force sensor utilizing stiffness change of shape‑memory polymer based on temperature,
 ROBOMECH Journal, vol.4, issue 1 (2017) Article:17 (8pp).
33) N. Toma, K. Mori, K. Takashima, T. Sano, Y. Umeda, H. Suzuki, T. Saito,
 A study of the relationship between the microcatheter shape and stability by numerical simulation,
 Journal of Neuroendovascular Therapy, vol.11, no.7 (2017) pp.333-340.
34) K. Takashima, A. Oike, K. Yoshinaka, K. Yu, M. Ohta, K. Mori, N. Toma,
 Evaluation of the effect of catheter on the guidewire motion in a blood vessel model by physical and numerical simulations,
 Journal of Biomechanical Science and Engineering, vol.12, no.4 (2017) Article ID: 17-00181 (13pp).

2. Proceedings of International Conference
1) K. Ikeuchi, K. Takashima, J. Kusaka and M. Ohashi,
 Lubrication of ceramics for the next generation of artificial joints,
 Third World Congress of Biomechanics, Sapporo, Japan (1998.08) p.121.
2) J. Kusaka, K. Takashima, D. Yamane, K. Ikeuchi,
 Fundamental study for all-ceramic artificial hip joints,
 12th International Conference on Wear of Materials, Atlanta, USA (1999.04).
3) K. Takashima, K. Toyoda, T. Okazaki, T. Kitou, K. Yoshinaka, K. Ikeuchi,
 Magnetic sensor system for detecting position and orientation of an endocranial catheter tip,
 First Asian Pacific Conference on Biomechanics, Osaka, Japan (2004.03) pp.123-124.
4) K. Takashima, T. Ktiou, H. Terada, K. Yoshinaka and K. Ikeuchi,
 Contact and friction between catheter and blood vessel,
 ICAT, Singapore, (2004. 12) p. B-112.
5) K. Yoshinaka, K. Takashima, T. Okazaki, K.Ikeuchi, K.Chinzei and T.Washio,
 Surface friction of internal medical instrument controled by mabnetic field oscillation,
 ICAT, Singapore, (2004. 12) p. C-12.
6) K. Takashima, K. Yoshinaka and K. Ikeuchi,
 Vision-based tactile sensor for endoscopy,
 CME2005, Japan (2005. 05) pp. 116-121.
7) K. Takashima, R. Shimomura, K. Yoshinaka and K. Ikeuchi,
 Experimental study on contact and friction between catheter and blood vessel,
 Biotribology symposium 2005, Japan (2005.06) pp. 85-88.
8) K. Yoshinaka, K. Takashima, T.Okazaki, K.Ikeuchi T.Washio K.Chinzei,
 Reduction method of surface friction of internal medical instrument using magnetic field oscillation
 Proc. of the 19th international congress and exhibition CARS2005 ICS-1281 p.1360(2005.06).
9) K. Yoshinaka, K. Takashima, T. Okazaki, T. Washio, K. Mizuhara, K. Chinzei,
 Position measurement of internal medical instrument using Magnet impedance sensor
 5th World Congress of Biomechanics, Journal of Biomechanics, Volume 39, Supplement 1 Munich, Germany (2006. 08) p S210.
10) K. Takashima, S. Ota, M. Ohta, K. Yoshinaka, K. Ikeuchi,
 Development of a catheter simulator for intravascular surgical planning",
 The World Congress on Medical Physics and Biomedical Engineering 2006, Seoul, Korea(2006. 08), p.4889.
11) K. Takashima, T. Mukai, H. Nakashima, S. Hayashi,
 Development of an assist robot for laparoscopic surgery,
 International Journal of Computer Assisted Radiology and Surgery, Vol.2, Supl.1, Berlin, Germany (2007.06), p.S503.
12) K. Takashima, K. Yoshinaka, S. Ota, T. Mukai, M. Ohta,
 Development of a guidewire simulator for intravascular surgery,
 International Journal of Computer Assisted Radiology and Surgery, Vol.2, Supl.1, Berlin, Germany (2007.06), pp.S495-S496.
13) C. Yu, H. Kosukegawa, K. Mamada, K. Kuroki, K. Takashima, K. Yoshinaka, M. Ohta,
 Development for catheter motion tracking system using poly (vinyl alcohol) hydro-gel biomodel,
 Proceedings of The Eighth International Symposium on Advanced Fluid Information and Transdiciplinary Fluid Integration, Sendai, Japan (2008.12) pp.92-93.
14) C. Yu, H. Kosukegawa, K. Mamada, K. Kuroki, K. Takashima, K. Yoshinaka, M. Ohta,
 Development of an in-vitro tracking system for catheter motion,
 9th International Symposium of Tohoku University Global COE Progaramme, Global Nano-Biomedical Engineering Education and Research Network Centre, Nano-Biomedical Engineering in the East Asian-Pacific Rim Region, Sendai, Japan, (2009.03) pp. 148-149.
15) C. Yu, H. Kosukegawa, K. Mamada, K. Kuroki, K. Takashima, K. Yoshinaka, M. Ohta,
 Study on a catheter movement with poly (vinyl alcohol) hydrogel for the development of an in-vitro tracking system,
 4th Asian Pacific Conference on Biomechanics, Christchurch, New Zealand, (2009.04) pp. 301-302.
16) K. Takashima, M. Ohta, K. Yoshinaka, T. Mukai, S. Ota,
 Computational simulation for catheter and guidewire motion in blood vessels,
 The 6th International Intracranial Stent Meeting 2009(ICS09), Sendai, Japan (2009.08) p.75.
17) C. Yu, H. Kosugegawa, K. Mamada, K. Kuroki, K. Takashima, K. Yoshinaka, M. Ohta,
 Experimental study on a catheter movement for evaluating catheter designs,
 The 6th International Intracranial Stent Meeting 2009(ICS09), Sendai, Japan (2009.08) p.83.
18) K. Takashima, M. Ohta, K. Yoshinaka, T. Mukai, S. Ota,
 Catheter and guidewire simulator for intravascular surgery (Comparison between simulation results and medical images),
 The World Congress on Medical Physics and Biomedical Engineering (WC2009), Munich, Germany (2009.09) pp.128-131.
19) K. Takashima, S. Horie, T. Mukai, K. Ishida, K. Matsushige, T. Kodani, M. Koh, T.Kanemura,
 Prototype tactile sensor for catheters made from vinylidene fluoride oligomer,
 The World Congress on Medical Physics and Biomedical Engineering (WC2009), Munich, Germany (2009.09) Post-Deadline Poster 110.
20) C. H. Yu, H. Kosukegawa, K. Mamada, K. Kuroki, K. Takashima, K. Yoshinaka, M. Ohta,
 Experimental Study on a catheter movement for evaluating catheter designs using an in-vitro tracking system,
 Sixth International Conference on Flow Dynamics (ICFD), Global COE Program, (2009.11) pp. 352-353.
21) K. Takashima, J. Rossiter, T. Mukai,
 Development of a McKibben artificial muscle using a shape-memory polymer,
 SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, San Diego, USA (2010.03) Vol.7644, pp.76440H-1~76440H-10.
22) J. Rossiter, K. Takashima, T. Mukai,
 Dielectric elastomer actuators with zero-energy fixity,
 SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, San Diego, USA (2010.03) Vol.7642, pp.764224-1~764224-10.
23) K. Utsunomiya, S. Horie, K.Ishida, Y. Ueda, N. Durand, B. Ameduri, K.Takashima,
 Ferroelectric and piezoelectric properties of newly synthesized vinylidene fluoride telomer with CnF2n+1 group,
 Fluoropolymer 2010, Meze, France, (2010.06) p.123.
24) K.Takashima, T. Noritsugu, J. Rossiter, S. Guo, T. Mukai,
 Development of curved type pneumatic artificial rubber muscle using shape-memory polymer,
 SICE Annual Conference 2011, Tokyo, Japan (2011.09) pp.1691-1695.
25) J. Rossiter, K. Takashima, T. Mukai,
 Enhanced IPMC actuation by thermal cycling,
 SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, San Diego, USA (2012.03) 7 pages (8340-91).
26) J. Rossiter, F. Scarpa, K. Takashima, P. Walters,
 Design of a deployable structure with shape memory polymers,
 SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, San Diego, USA (2012.03) 7 pages (8342-32).
27) K. Takashima, S. Horie, M. Takenaka, T. Mukai, K. Ishida, Y. Ueda,
 Fundamental study on medical tactile sensor composed of organic ferroelectrics,
 Fifth International Conference on Emerging Trends in Engineering and Technology (ICETET-12), Himeji, Japan (2012.11) pp.132-136.
28) K. Takashima, S. Tsuzuki, M. Umetani, K. Yoshinaka, Y. Hoshino, M. Ohta, K. Mori,
 Guidewire simulator for intravascular surgery (Comparison between simulation and experimental results using blood vessel model),
 International Symposium on Applied Engineering & Sciences (SAES2013), Serdang, Malaysia (2013.10) 2 pages (Paper ID: 023).
29) J. Rossiter, K. Takashima, T. Mukai,
 Thermal response of novel shape memory polymer-shape memory alloy hybrids,
 Proceedings of SPIE: Behavior and Mechanics of Multifunctional Materials and Composites, Vol. 9058, San Diego, USA (2014.03) 8 pages.
30) N. Morimoto, K. Takashima, T. Mukai,
 Fundamental Study on Joint Stiffness Control Using Shape-memory Polymer Sheet with Embedded Electrical Heating Wire,
 International Symposium on Applied Engineering & Sciences (SAES2014), Kitakyushu, Japan (2014.12).
31) M. Takenaka, K. Takashima,
 Thin Plate Type Tactile Sensor Using PVDF for Evaluating Uneven Surfaces,
 International Symposium on Applied Engineering & Sciences (SAES2014), Kitakyushu, Japan (2014.12).
32) M. Takenaka, K. Takashima,
 Portable tactile sensor system for evaluating uneven surfaces,
 The 8th Asian-Pacific Conference on Biomechanics (AP Biomech 2015), Sapporo, Japan (2015.09) p.352.
33) A. Oike, K. Takashima, K. Yoshinaka, K. Yu, M. Ohta, K. Mori,
 Evaluation of deformation behavior of catheter using PVA-H blood vessel biomodel,
 3rd International Conference on Computational Methods in Engineering and Health Sciences (ICCMEH-2016), Kitakyushu, Japan (2016.12) p.55.
34) K. Takashima,
 Actuators and sensors utilizing stiffness change of shape-memory polymer according to temperature,
 Japan-China Joint Workshop on Recent Advances on Active Soft Materials 2018, Tokyo, Japan (2018.8).
35) K. Takashima, R. Onoda, T. Mukai,
 Evaluation of error and sensitivity for force sensor using shape-memory polymer,
 SICE Annual Conference 2018, Nara, Japan (2018.09) pp.1433-1438.

3. Book and Reviews
1) K. Ikeuchi, K. Takashima, M. Ohashi, J. Kusaka,
 Friction and wear tests of ceramics for all-ceramic artificial joints,
 Joints Arthroplasty (1999) pp. 132-139.
2) K. Ikeuchi, K. Takashima, K. Yoshinaka,
 2.4.8 Vision-based tactile sensor for endoscopy,
 The Latest Development of Super Five Senses Sensor, NTS (2005) pp.331-340(in Japanese).
3) K. Takashima,
 (Topics of new techniques) Vision-based tactile sensor for endoscopy,
 Japanese journal of optics vol. 35 no. 10 (2006)pp. 531-533.(in Japanese)
4) K.Takashima, S. Ota, M. Ohta, K. Yoshinaka, T. Mukai,
 Development of a catheter and guidewire simulator for interventional therapy,
 Journal of Japan Society of Biorheology, Vol.22, No.1, pp.12-18, 2008.3.(in Japanese).
5) K. Ishida, S. Horie, Y. Ueda, K.Takashima,
 フレキシブル有機メモリ・センサの研究開発,
 Monthly Display, Vol.18, No.2 (2012) pp.31-36 (in Japanese).
6) K.Takashima, K. Mori, K. Yoshinaka, T. Mukai,
 Numerical Analysis of the Mechanical Properties of a Vena Cava Filter,
 Pulmonary Embolism (Editor: Ufuk Çobanoğlu), In-Tech(ISBN:978-953-51-0233-5), (2012.03) pp.219-236.Download
7) K.Takashima, S. Horie, K. Ishida, Y. Ueda, M. Takenaka, T. Mukai
 医療・介護ロボット分野における有機センサの可能性―触覚センサを中心として―,
 応用物理学会 有機分子・バイオエレクトロニクス分科会会誌, Vol.23, No.3 (2012) pp.169-174 (in Japanese).
8) K.Takashima,
 Recent Trend of Palpation by Tactile Sensor,
 トライボロジスト,Vol.58, No.4 (2013) pp.269-274 (in Japanese).
9) K.Takashima, S. Horie, K. Ishida, Y. Ueda, M. Takenaka, T. Mukai,
 Chapter 3 Sensitivity Improvement and Measuring Technologies of Health-care Sensors, Section 24 Development and Application Technologies of Tactile Sensor for Minimally Invasive Ssurgery,
 [Next Generation] Development of Health-care Apparatus,Technical Information Institute Co.,ltd, (2014) pp.215-220 (in Japanese).
10) K.Takashima, S. Horie, K. Ishida, M. Takenaka, T. Mukai,
 Development of Tactile Sensor Composed of Organic Ferroelectrics,
 Japan-the Netherlands Symposium on Soft-Tribology, (2015.09) pp.3-6.
11) K.Takashima,
 Development of Device Placement Simulator for Endovascular Treatment,
 Thirteenth International Conference on Flow Dynamics (ICFD2016), Sendai, Japan (2016.10) 2 pages (OS4-6).
12) K.Takashima, S. Ikeno, K. Ishida, S. Horie,
 第4章 第3節 〔7〕 低侵襲手術への応用を目的とした小型触覚センサ,
 狙いどおりの触覚・触感をつくる技術,(2017) pp.476-486 (in Japanese).
13) M. Ohta, K.Takashima,
 「バイオエンジニアリング部門:「脳神経血管内治療に関する 医工学連携研究会(A-TS02-16)」の紹介」,
 日本機械学会誌,第121巻,第1197号(2018) pp.28-29 (in Japanese).
14) K.Takashima,
 「血管内治療デバイス留置過程の定量的分析」,
 日本機械学会誌,第121巻,第1197号(2018) p.31 (in Japanese).


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Kazuto TAKASHIMA