yasokada2

Homepage of Yasuhiko OKADA

Profile

Name (First, Last)::
Yasuhiko OKADA (Birthplace : Nara Prefec.)
Educational background::
Ph.D (in Engineering) from Kinki University (March, 2003) having studied from Prof. Sonoyo Mukai and Dr. Itaru Sano (Kinki Univ.)
Contact::
yasokada(at)gmail.com
Curriculum vitae
+ 2000 Apr.-2003 Mar. JSPS Research Fellowship for Young Scientists (DC1), Kinki University + 2003 Apr.-2003 Sep. Post-doc researcher, Kinki University + 2003 Oct.-2008 Mar. Post-doc researcher, The 21st Century COE Program "Origin and Evolution of Planetary Systems", Graduate School of Science, Kobe University + 2008 Apr.-2009 Mar. Post-doc researcher, Interdisciplinary Graduate School of Science and Engineering, Kinki University + 2009 Apr.- : Working for a company
Other qualifications
TOEIC 900 (obsolete), 3rd class of French Language 3rd class of English Language, 2nd class of System Administration 2nd class of Information Processing, ETEC class2 - 546/800 (71,70,60%)
Computer Languages
Fortran, C language, awk, bash script, hdf library (4 and 5), povray, Squeak.
Favorites
Kaori Ekuni, go-syu, Rio Shimamoto, Hiroshi Yuki, Hiroyuki Itsuki, Miri MASUDA, Kashiwa SATOH Amy Yamada, Philippe Stark, Yusuke NAKAMURA, 3 HOMMES ET UN COUFFIN, YUI Things I'll never say, About the light, sakura, Rolling star, Life, La Cinquntaine Avril Lavigne, Bonnie Pink, Lisa Loeb, PSYS, LINDBERG, THE BLUE HEARTS, Chai Classic The perfect world of KAI(11), Kobe Zaijyu(8). Pen 177,2006, Nicolas Le Riche, Maiko Seo(7's blood), Keigo Tono (Secret), Kiyoshi Shigematu (Shootingstar Wagon, Vitamin F), TNG076 Family, Osami NAGANO (Mercury Staffing), sesenta.exblog.jp, Kobe Zaijyu (10), Shigehiko TOYAMA, YUKI (NagaiYume, JOY, Dramatic, Home Sweet home, etc), Kurt naef, OP frame of TV drama 'Osen', Jose Mario dos Santos Mourinho Felix, PV of 'Good riddance (GreenDay), Katsuzo OSHIKIRI (Toshohgu-Youmeimon), eno, Yoshihisa AONO, idevian crew (Haikikoh), Researchers, Kennya HARA (White/Shiro), Etsuro SOTO-O (Message from Gaudi), Shoji UEDA (An album; The everlasting story), Superfly (Superfly), Taguchi Randy (About Time), Hanako OKU (Time Note), Aoi Teshima (Rainbow Songbook, Spring Songbook), Reflection by NAGAOKA Kennmei, Arthur Mattuck (DE), Milia (celluloid, Smile and smile, the season of cherry blossoms, etc.), 1mm (a bunch of flowers, instead of saying good-bye), Tramezzino, Men of Mathematics, IMALU, Paul J. Nahin, about 100%, Saburo SHIROYAMA, iPad, AZU (For you), Seiichi GOTOH, Koji Nozaki (drawing everyday), Q;indivi Starring Rin Oikawa (Serenade for Strings, etc.), stripe sheep 12, Paul Erdos, school food punishment, ChaOh, America-Tei, Anthony Leggett, let my people go surfing, Fumiko Kono, Our changeable future, GIFT FROM THE SEA (A.M.L), Tracing the Orion (U.S.G), Letters of a businessman to his son, Changeable thought (H. HIRONAKA.), a message to Garcia (E. H), Yukitoshi SHIMEGI (Moca), Toru KENJO. "Worring about it won't solve anything." "Trying your best is the best option." "Qui va lentement va loin." (Chi va piano, va sano. Chi va sano, va lontano). The ancestor put a seed. Their offspring take rest under a big tree after centuries. "Target : from 3 months to 99 years old". "A great idea is to solve several problems at once". "hoping for the best, preparing for the worst" Professional person converts difficult things into normal things. This holds not only to archery but also to any other things. Firstly, you continue it for five years. Some people believe they can do it. Others believe they cannot do it. In both cases, they will get what they believe. It takes time to obtain results. Most people get tired of, hesitate to continue, and give up before they obtain results. Three-month-theme, and three-year-theme. Use your current time, for your future time (July 22, 2011). Changing from a consumer to a producer (Dec. 06, 2011). A rule of three (Jan. 24, 2012) : You learn everyday three small things which you would like to brush up. You stop up to three things which you think it is wasting your time. Just continue the above custom over and over and over. Fix your coordinate (Feb. 19, 2012): Without coordinate, you will lose your way. So, fix your coordinate first. When you have a lot of things to study, you study first the things which can be the coordinate. When you are too busy, fix your life-style first. This is another coordinate.

Research Interest

- Study on light scattering properties of non-spherical particles

+ Light scattering by particulate media based on geometrical optics
+ Grouping and Adding Method (GAM) for large fluffy aggregates
+ Reduction in iterations in DDA (OMMT)
+ Efficient averaging of light scattering properties (QMC)
+ Light scattering properties of soot aerosols : pending
+ Intensity and polarization of fractal aggregates
+ Light scattering of particulate media
+ NAOPC and MTGRP : [link]->[T-matrix] at the right side menu (Feb.24 2009)

Publications

+ + + +	Y.Okada,"Numerical light scattering simulations and optical properties of aggregates", in: Light Scattering Reviews 5 (editor: A.A. Kokhanovsky), accepted, Springer-Praxis, 2010. [link] [amazon] Y.Okada, A.A. Kokhanovsky, "Review: Light scattering and absorption by densely packed groups of spherical particles", JQSRT, 110, 902-917, 2009. [doi] Y. Okada, I.Mann, T.Mukai, M.Koehler, "Extended calculation of polarization and intensity of fractal aggregates based on rigorous method for light scattering simulations with numerical orientation averaging", JQSRT, 109, 2613-2627, 2008. [doi] Y.Okada, "Efficient numerical orientation averaging of light scattering properties with a quasi-Monte-Carlo method", JQSRT, 109, 1719-1742, 2008. [doi]
+	Y.Okada, I.Mann, I.Sano, S.Mukai, "Acceleration of the iterative solver in the discrete dipole approximation: Application to the orientation variation of irregularly shaped particles", JQSRT, 109, 1461-1473, 2008. [doi]
+	Y.Okada, T.Mukai, I.Mann, H.Nomura, T.Takeuchi, I.Sano, S.Mukai, "Grouping and adding method for calculating light scattering by large fluffy aggregates", JQSRT, 108, 65-80, 2007. [doi]
+	A. Chantal Levasseur-Regourd, T. Mukai, J. Lasue and Y.Okada, "Physical properties of cometary and interplanetary dust", Planetary and Space Science, 55, 1010-1020, 2007. [doi]
+	T.Mukai and Y.Okada, Optical properties of large aggregates, ESA-SP 643, 157-160, 2007. [link]
+	S. Mukai, I. Sano, A. Nishimori, M. Sato, Y.Okada, B.N.Holben, A comparison of aerosol properties with air pollutants, Adv. Space. Res., 39, 32-35, 2007. [doi]
+	Y. Okada, A.M. Nakamura and T. Mukai , Light scattering by particulate media of irregularly shaped particles: laboratory measurements and numerical simulations, JQSRT, vol. 100, no.1-3, 295-304, 2006. [doi]
+	Gupta, R.; Mukai, T.; Vaidya, D. B.; Sen, A. K.; Okada, Y., Interstellar extinction by spheroidal dust grains, A & A, 441.,555G, 2005. [ADS]
+	Y. Okada, S. Mukai, I. Sano, K. Kozai and H. Ishida, "Aerosols from MIRAI research cruise in the tropical Pacific Ocean", Adv. Space. Res, 33,1195-1199, 2004. [ADS]
+	I. Sano, S. Mukai, Y. Okada, B.N. Holben, S. Ohta and T. Takamura, "Optical properties of aerosols during APEX and ACE-Asia experiments",J. Geophys. Res., vol. 108, No. D23, 8649, doi:10.1029/ 2002JD003263, 2003. [ADS]
+	Y. Okada, S. Mukai, I. Sano, "Modified cloud flag for SeaWiFS data over turbid water region", Geophys. Res. Lett., 30(4), 1193, doi: 10.1029/ 2002GL015714, 2003. [ADS]
+	Y. Okada, S. Mukai, and I. Sano, "A New Algorithm to Retrieve Aerosol over the Gulf of Cambay in India", J. Indian Society of Remote Sensing, vol.30, No. 1 & 2, pp. 81-86, 2002.
+	Y. Okada, S. Mukai and I. Sano, "Neural Network Approach for Aerosol Retrieval", Proc. IEEE/IGARSS, vol.4, pp. 1716-1718, 2001