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Alrwashdeh, Saad S.,Markotter, Henning,Haussmann, Jan,Hilger, Andre,Klages, Merle,Muller, Bernd R.,Kupsch, Andreas,Riesemeier, Heinrich,Scholta, Joachim,Manke, Ingo Korean Society of Microscopy 2017 Applied microscopy Vol.47 No.3
In this investigation, synchrotron X-ray imaging was used to investigate the water distribution inside newly developed gas diffusion media in polymer electrolyte membrane fuel cells. In-situ radiography was used to reveal the relationship between the structure of the microporous layer (MPL) and the water flow in a newly developed MPL equipped with randomly arranged holes. A strong influence of these holes on the overall water transport was found. This contribution provides a brief overview to some of our recent activities on this research field.
정기호,이만기 韓國計量經濟學會 1999 계량경제학보 Vol.10 No.2
RAS계열의 방법들 중 단순RAS방법은 투입계수를 예측할 때 계산이 간편하며 필요한 정보량이 적다는 장점 때문에 일반적으로 가장 널리 사용되지만 부가가치행렬을 예 측하지 못한다는 단점이 있다. 본 논문에서는 단순RAS의 장점을 살리면서 부가가치의 정보를 활용하여 부가가치행렬도 예측할 수 있도록 변형된 방법을 제시하며, 우리 나라 산업연관자료에 기초하여 단순RAS방법, RECRAS, Quadratic Programming RAS 등의 기존 RAS계열 방법들과 예측성과를 비교·분석하려 한다.
Results from the IAEA Benchmark of Spallation Models
S. Leray,J. C. David,M. Khandaker,G. Mank,A. Mengoni,N. Otsuka,D. Filges,F. Gallmeier,A. Konobeyev,R. Michel 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Spallation reactions play an important role in a wide domain of applications. In the simulation codes used in this field, the nuclear interaction cross-sections and characteristics are computed by spallation models. The International Atomic Energy Agency (IAEA) has recently organised a benchmark of the spallation models used or that could be used in the future into high-energy transport codes. The objectives were, first, to assess the prediction capabilities of the different spallation models for the different mass and energy regions and the different exit channels, and, second, to understand the reason for the success or deficiency of the models. Results of the benchmark concerning both the analysis of the prediction capabilities of the models and the first conclusions on the physics of spallation models are presented.