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Tanifuji, Yuta; Kawabata, Kuniaki
Proceedings of International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP 2020) (Internet), p.246 - 249, 2020/02
Matsuura, Yuto*; Hayano, Akira; Itakura, Kenichi*; Suzuki, Yukinori*
Applied Soft Computing, 84, p.105737_1 - 105737_9, 2019/11
Times Cited Count：2 Percentile：14.62(Computer Science, Artificial Intelligence)LiDAR (laser imaging detection and ranging) has been developed to obtain a high-resolution point cloud data indicating the detailed 3D shapes of an object. To identify discontinuities in a rock mass of a tunnel gallery wall, it is necessary to approximate the rock mass surface with small planes. Normal vectors of the planes are important to identify discontinuities. We developed an algorithm for estimation of planes based on multi-dimensional particle swarm optimization (MD PSO) from point cloud data. Point cloud data were segmented into bounding boxes and grouped into clusters by MD PSO. Planes were estimated using the least squares method for point cloud data in the respective clusters. The newly developed MD PSO algorithm was evaluated using point cloud data obtained from a gallery wall. Evaluation was carried out in comparison with the previous developed variable-box segmentation (VBS) algorithm. The MD PSO-based algorithm showed a 7% higher accuracy than that of the VBS algorithm.
Tanifuji, Yuta; Kawabata, Kuniaki; Hanari, Toshihide
Proceedings of 2019 IEEE Region Ten Conference (TENCON 2019) (Internet), p.36 - 40, 2019/10
Tanifuji, Yuta; Kawabata, Kuniaki
Proceedings of International Topical Workshop on Fukushima Decommissioning Research (FDR 2019) (Internet), 4 Pages, 2019/05
Kasahara, Mikio*; Ma, C.-J.*; Okumura, Motonori*; Kojima, Takuji; Hakoda, Teruyuki; Taguchi, Mitsumasa; Sakai, Takuro; Ohara, Yoshihiro
JAEA-Review 2005-001, TIARA Annual Report 2004, p.293 - 295, 2006/01
Artificial cloud generation experiment was performed using a huge vertical pit located in Kamaishi iron-copper mine to investigate the characteristics of cloud. The physical and chemical properties of individual cloud droplets were examined by microscopic analysis at Kyoto university and micro-PIXE analysis at TIARA. The process of growth of cloud was clarified based on the result on droplet size, its distribution, droplet number concentration, and the change in distribution of chlorine in droplet as the function of size.
Tachibana, Haruo; Kikuchi, Masamitsu; Sekita, Tsutomu; Yamaguchi, Takenori; Oeda, Mikihiro*; Kurosawa, Naohiro*
JAERI-Data/Code 2004-010, 19 Pages, 2004/06
JAERI-Data-Code-2004-010.pdf:1.92MB
JAERI-Data-Code-2004-010-appendix(CD-ROM).zip:12.12MB
This report is a revised edition of "Isopleths of Surface Air Concentration and Surface Air Absorbed Dose Rate due to a Radioactive Cloud Released from a Stack(II)"(JAERI-M 90-206) and based on the revised Nuclear Safety Guidelines reflected the ICRP1990 Recommendation. Characteristics of this report are the use of Air Karma Rate (Gy/h) unit instead of Air Absorbed Dose Rate (Gy/h) unit, and the records of isopleths of surface air concentration and surface air karma rate on CD-ROM. These recorded data on CD-ROM can be printed out on paper and/or pasted on digital map by personal computer.
Noguchi, Hiroshi; Yokoyama, Sumi
Proceedings of 10th International Congress of the International Radiation Protection Association (IRPA-10) (CD-ROM), 6 Pages, 2000/05
no abstracts in English
Furuno, Akiko; Yamazawa, Hiromi
Mathematics and Computation, Reactor Physics and Environmental Analysis in Nuclear Applications, 2, p.1699 - 1704, 1999/00
no abstracts in English
Nishihara, Tetsuo; Hada, Kazuhiko; Shiozawa, Shusaku
JAERI-Research 97-022, 110 Pages, 1997/03
JAERI-Research-97-022.pdf:4.1MB
no abstracts in English
Taki, Mitsumasa; Kobayashi, Hideo; Suzuki, Takashi; Shimizu, Isamu
JAERI-M 90-206, 345 Pages, 1990/11
no abstracts in English
Togawa, Orihiko
Journal of Nuclear Science and Technology, 27(4), p.360 - 374, 1990/04
no abstracts in English
Togawa, Orihiko
JAERI-M 89-145, 93 Pages, 1989/10
no abstracts in English
Hidaka, Akihide;
Hoken Butsuri, 20, p.33 - 42, 1985/00
no abstracts in English
-External Dose from a Randomly Distributed Radioactive CloudJAERI-M 84-006, 28 Pages, 1984/02
no abstracts in English
; ; ; ;
JAERI-M 82-021, 292 Pages, 1982/03
no abstracts in English
; ; ; ;
JAERI-M 9578, 19 Pages, 1981/07
no abstracts in English
-dose rate distribution from the radioactive cloud in a reactor accident;
Nihon Genshiryoku Gakkai-Shi, 5(2), p.110 - 119, 1963/00
no abstracts in English
; Miyanaga, Ichiro
Nihon Genshiryoku Gakkai-Shi, 4(11), p.741 - 745, 1962/00
no abstracts in English
Nakagawa, Taichi; Suzuki, Reika*; Matsueda, Makoto; Takase, Tsugiko*; Terashima, Motoki; Takagai, Yoshitaka*
no journal, ,
no abstracts in English
Nakagawa, Taichi; Matsueda, Makoto; Terashima, Motoki; Takagai, Yoshitaka*
no journal, ,
no abstracts in English
