Zobrazeno 1 - 10
of 326
pro vyhledávání: '"HOSHI, Takeo"'
Autor:
Sato, Yusuke, Fukaya, Yuki, Nakano, Akito, Hoshi, Takeo, Lee, Chi-Cheng, Yoshimi, Kazuyoshi, Ozaki, Taisuke, Nakashima, Takeru, Ando, Yasunobu, Aoyama, Hiroaki, Abukawa, Tadashi, Tsujikawa, Yuki, Horio, Masafumi, Niibe, Masahito, Komori, Fumio, Matsuda, Iwao
The structure of an Al(111)3x3-Si surface was examined by combining data from positron diffraction and core-level photoemission spectroscopy. Analysis of the diffraction rocking curves indicated that the overlayer had a flat honeycomb lattice structu
Externí odkaz:
http://arxiv.org/abs/2409.19666
We present a new computation method for simulating reflection high-energy electron diffraction and the total-reflection high-energy positron diffraction experiments. The two experiments are used commonly for the structural analysis of material surfac
Externí odkaz:
http://arxiv.org/abs/2306.00271
Autor:
Motoyama, Yuichi, Yoshimi, Kazuyoshi, Mochizuki, Izumi, Iwamoto, Harumichi, Ichinose, Hayato, Hoshi, Takeo
Publikováno v:
Computer Physics Communications, 280, 108465/1-11 (2022)
An open-source data-analysis framework 2DMAT has been developed for experimental measurements of two-dimensional material structures. 2DMAT offers five analysis methods: (i) Nelder-Mead optimization, (ii) grid search, (iii) Bayesian optimization, (iv
Externí odkaz:
http://arxiv.org/abs/2204.04484
Publikováno v:
JSIAM Letters, Volume 14 Pages 13-16, 2022
A performance prediction method for massively parallel computation is proposed. The method is based on performance modeling and Bayesian inference to predict elapsed time T as a function of the number of used nodes P (T=T(P)). The focus is on extrapo
Externí odkaz:
http://arxiv.org/abs/2110.14545
Publikováno v:
Computer Physics Communications 277, 108371/1-10 (2022)
The present paper reports sim-trhepd-rheed (STR), an open-source simulator of total-reflection high-energy positron diffraction (TRHEPD) and reflection high-energy electron diffraction (RHEED) experiments which are used for atom-scale surface structu
Externí odkaz:
http://arxiv.org/abs/2110.09477
Autor:
Hoshi, Takeo, Sakata, Daishiro, Oie, Shotaro, Mochizuki, Izumi, Tanaka, Satoru, Hyodo, Toshio, Hukushima, Koji
Publikováno v:
Computer Physics Communications 271, pp. 108186/1-7 (2022)
The present article proposes a data analysis method for experimentally-derived measurements, which consists of an auto-optimization procedure and a sensitivity analysis. The method was applied to the results of a total-reflection high-energy positron
Externí odkaz:
http://arxiv.org/abs/2103.04875
Publikováno v:
In Journal of The Japanese and International Economies March 2024 71
Publikováno v:
In Computer Physics Communications March 2024 296
Autor:
Iakymchuk, Roman, Mukunoki, Daichi, Podobas, Artur, Jézéquel, Fabienne, Imamura, Toshiyuki, Fujita, Norihisa, Huthmann, Jens, Kudo, Shuhei, Tan, Yiyu, Domke, Jens, Ohlhus, Kai Torben, Fukaya, Takeshi, Hoshi, Takeo, Murakami, Yuki, Nakata, Maho, Ogita, Takeshi, Sano, Kentaro, Boku, Taisuke
In numerical computations, precision of floating-point computations is a key factor to determine the performance (speed and energy-efficiency) as well as the reliability (accuracy and reproducibility). However, precision generally plays a contrary ro
Externí odkaz:
http://arxiv.org/abs/2004.04628