H
Hiroshi Takemiya
Researcher at Japan Atomic Energy Agency
Publications - 48
Citations - 719
Hiroshi Takemiya is an academic researcher from Japan Atomic Energy Agency. The author has contributed to research in topics: Visualization & Volume rendering. The author has an hindex of 9, co-authored 47 publications receiving 651 citations. Previous affiliations of Hiroshi Takemiya include Raytheon Intelligence and Information Systems & Japan Atomic Energy Research Institute.
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Journal ArticleDOI
Detailed deposition density maps constructed by large-scale soil sampling for gamma-ray emitting radioactive nuclides from the Fukushima Dai-ichi Nuclear Power Plant accident
Kimiaki Saito,Isao Tanihata,Mamoru Fujiwara,Takashi Saito,Susumu Shimoura,Takaharu Otsuka,Yuichi Onda,Masaharu Hoshi,Yoshihiro Ikeuchi,Fumiaki Takahashi,Nobuyuki Kinouchi,Jun Saegusa,Akiyuki Seki,Hiroshi Takemiya,Tokushi Shibata +14 more
TL;DR: Soil deposition density maps of gamma-ray emitting radioactive nuclides from the Fukushima Dai-ichi Nuclear Power Plant (NPP) accident were constructed on the basis of results from large-scale soil sampling, and the radiation doses from radioactive cesium were found to be much higher than those from the other radioactivenuclides.
Journal ArticleDOI
Spatial distributions of radionuclides deposited onto ground soil around the Fukushima Dai-ichi Nuclear Power Plant and their temporal change until December 2012.
Satoshi Mikami,Takeshi Maeyama,Yoshifumi Hoshide,Ryuichi Sakamoto,Shoji Sato,Naotoshi Okuda,Stéphanie Demongeot,Rodolfo Gurriaran,Yoshitomo Uwamino,Hiroaki Kato,Mamoru Fujiwara,Tetsuro Sato,Hiroshi Takemiya,Kimiaki Saito +13 more
TL;DR: No apparent temporal change of the radionuclide inventories was observed from March to December 2012, and spatial dependence in the ratios of (134)Cs/(137]Cs and (110m)Ag/(137)Cs were observed in the Tohoku and Kanto regions.
Book ChapterDOI
An Architecture of Stampi: MPI Library on a Cluster of Parallel Computers
TL;DR: A communication library which extends an MPI application on a single parallel machine to a cluster of parallel machines and provides some functionality which are required for constructing distributed applications and environments based on the MPI2 standard with a focus on dynamic process management.
Journal ArticleDOI
The air dose rate around the Fukushima Dai-ichi Nuclear Power Plant: its spatial characteristics and temporal changes until December 2012
Satoshi Mikami,Takeshi Maeyama,Yoshifumi Hoshide,Ryuichi Sakamoto,Shoji Sato,Naotoshi Okuda,Tetsuro Sato,Hiroshi Takemiya,Kimiaki Saito +8 more
TL;DR: The observed reduction rate of the air dose rate over the 18 months between June 2011 and December 2012 was greater than that calculated from radioactive decay of radiocesium by 10% in relative percentage except decontaminated sites.
Journal ArticleDOI
Summary of temporal changes in air dose rates and radionuclide deposition densities in the 80 km zone over five years after the Fukushima Nuclear Power Plant accident.
Kimiaki Saito,Satoshi Mikami,Masaki Andoh,Norihiro Matsuda,Sakae Kinase,Shuichi Tsuda,Tadayoshi Yoshida,Tetsuro Sato,Akiyuki Seki,Hideaki Yamamoto,Yukihisa Sanada,Haruko Wainwright-Murakami,Hiroshi Takemiya +12 more
TL;DR: In this article, the authors summarized temporal changes in air dose rates and radionuclide deposition densities over five years in the 80 km zone based on large-scale environmental monitoring data obtained continuously after the Fukushima Nuclear Power Plant (NPP) accident, including those already reported in the present and previous special issues.