检索结果-南通市图书馆

Using GIS to develop a mobile communications network for disaster-damaged areas

International Journal of Digital Earth 2014年第4期7卷 279-293页

作者： Youhei Kawamura Ashraf MDewan Bert Veenendaal Masahiro Hayashi Takeshi Shibuya Itaru Kitahara hajime nobuhara Kento Ishii Department of Mining Engineering Curtin UniversityKalgoorlieAustralia Department of Spatial Sciences Curtin UniversityPerthAustralia Graduate School of System and Information Engineering University of TsukubaTsukubaJapan

Communications network damage resulting from a large disaster causes difficulties in the ability to rapidly understand the current situation and thus make appropriate decisions towards mitigating problems,such as where to send and dispense emergency *** research outlined in this paper focuses on the rapid construction of a network after a disaster *** study suggests ZigBee and geographic information systems(GIS)technologies to resolve these problems and provide an effective communication *** experimental results of the ZigBee network system are presented,examples are provided of the mapping and analysis undertaken using GIS for the disaster-stricken area of Tsukuba City,Japan,and the communications node arrangements are determined for this *** results demonstrate the effectiveness of establishing such a communications system for supporting efforts to relieve disaster-damaged areas.

关键词： ZigBee GIS disaster network

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Nondestructive high-sensitivity measurement method for activation estimation in accelerator room concrete

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辐射防护 2020年第6期40卷 677-682页

作者： Hiroshi Matsumura Go Yoshida Akihiro Toyoda Kazuyoshi Masumoto hajime Nakamura Taichi Miura Koichi Nishikawa Kotaro Bessho Kimikazu Sasa Tetsuaki Moriguchi Fumiyoshi nobuhara Yoko Nagashima High Energy Accelerator Research Organization(KEK) Oho 1-1Tsukuba Ibaraki 305-0801Japan University of Tsukuba 1-1-1 TennodaiTsukubaIbaraki 305-8577Japan Tokyo Nuclear Services Co. Ltd.1-3-5.TaitoTaito-kuTokyo 110-0016Japan

This study established a method for easily and quickly estimating the specific activity produced in the concrete walls and floors of accelerator rooms during long-term operation of accelerator,for advanced zoning of activated/nonactivated areas in planning the decommissioning of an *** propose a new,highly sensitive method for nondestructively estimating the specific activity in concrete that can be applied to activation *** this method,instead of direct determination of the specific activities of important long-half-life radionuclides for decommissioning,such as 152 Eu and 60 Co,we determine the specific activities of short-half-life radionuclides,24 Na and 56 Mn,in situ to obtain neutron *** obtained neutron flux and accelerator operation history yield the specific activities of 152 Eu and 60 Co for the advance zoning of activated/non-activated *** method is a powerful long-term prediction tool for concrete activation.

关键词： accelerator activation concrete specific activity decommissioning

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