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Yamamoto, Kei
academist Journal (Internet), 3 Pages, 2019/09
no abstracts in English
Tanaka, A.*; Machida, Masahiko
Physical Review Letters, 81(8), p.1746 - 1747, 1998/08
Times Cited Count：1 Percentile：44.08(Physics, Multidisciplinary)no abstracts in English
Miyamura, Hiroko; Idomura, Yasuhiro; Takemiya, Hiroshi; Sakurai, Daisuke*; Wu, H.-Y.*; Takahashi, Shigeo*
no journal, ,
We survey the distribution of accumulated radioactive substances and assess the air dose rate. The surveyed datasets are stored in a database and are made available to the public. In addition, we develop a visualization tool that enables ones to download the datasets and then visualize them on one's computer environment. Recently, the size of the datasets have been significantly extended as more detailed measurements in space and time are available, and effective reduction of the size of the datasets is necessary for analyzing such large scale datasets. However, if the datasets are not carefully reduced, we often miss a part of important features in the distribution data. Therefore, we develop an effective Level of Detail control (LoD) method for retaining critical features of the distribution. In the method, the structure of two dimensional data that represents a global feature of the distribution is extracted by means of differential topology analyses. The data size is reduced by considering local features of the data, while retaining its global structure.
Yamamoto, Kei; Thiang, G. C.*; Pirro, P.*; Kim, K.-W.*; Everschor-Sitte, K.*; Saito, Eiji*
no journal, ,
