著者

須田 成美 河田 敏勝 上甲 恭平 井上 尚子 高橋 勝六

出版者

一般社団法人 日本家政学会

雑誌

日本家政学会誌 (ISSN:09135227)

巻号頁・発行日

vol.67, no.1, pp.14-22, 2016 (Released:2016-01-23)

参考文献数

15

被引用文献数

1

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The heat transfer rate through lined clothes was measured for various lining materials. Heat transfer resistance, which is a scale of the heat retention capability of clothes, increased as a function of the amount of lining material used per unit area. The heat transfer resistance of clothes with down lining was large, those with feather and cotton fibers were 3/4 that of down, and those with crimped polyester fiber and wool fiber were 1/2 that of down. The heat transfer coefficient of lining is given by the sum of the conductive heat transfer coefficient and the radiant heat transfer coefficient. The conductive heat transfer coefficient decreases with an increase in the thickness of the lining. The radiant heat transfer rate through the lining decreases with the shading of the lined material. The decreasing fraction in the radiant heat transfer coefficient against empty air space is defined as the shading fraction. The shading fraction increased with an increase in the amount of lining used, and the shading fraction of the down lining was large, as was the heat transfer resistance of lined clothes. The shading fraction of feather lining was small, which was the reason for the small heat transfer resistance of clothes with feather lining, despite having the same thickness as the down lining. Fiber diameters of lining fiber used were 16, 34 and 40 μm for cotton, crimped polyester and wool fibers, respectively, and the shading fraction of fiber lining for a given amount of lining per unit area increased with a decrease in fiber diameter. The shading fraction of fiber lining increased with the surface area of the lining, calculated using the fiber diameter, and was independent of the kind of lining material used. The shading fraction correlated with the surface area of the fiber lining. Down is an excellent material for retaining heat in lined clothes because of the large shading fraction of radiant heat transfer due to its large surface area consisting of stalks and small fibers, and its relatively large lining thickness per unit amount, which results in a small conductive heat transfer rate.

著者

井上 尚子 久野 祐輔

出版者

一般社団法人 日本原子力学会

雑誌

日本原子力学会和文論文誌 (ISSN:13472879)

巻号頁・発行日

vol.9, no.3, pp.305-317, 2010 (Released:2012-02-08)

参考文献数

56

被引用文献数

2 2

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The fabrication of fast neutron reactor cycles is intended for next-generation nuclear energy systems. This is in line with the fact that the amount of plutonium, which should be reprocessed, increases significantly. Techniques for increasing the nuclear proliferation resistance, especially extrinsic measures including safeguards, are essential for such systems to be accepted by the international community. A highly resistant system with a high detection capability, as well as satisfying current safeguards requirements, was studied for an advanced aqueous reprocessing, and its technical practicability and operational compatibility were discussed. The effect of the proposed safeguards system in this paper was evaluated using the Markov model approach developed by the GIF Proliferation Resistance and Physical Protection Working Group (PR & PP WG). The proposed safeguards system includes a high-detection-capability system and the accountancy/verification measures based on the monthly interim inventory taking or verification that should be performed at a similar level of quality to the normal physical inventory verification with very little impact to the practical plant operation. This can only be realized with “safeguards by design.”

著者

横平 徳美 滝広 眞利 井上 尚子 岡本 卓爾

出版者

The Institute of Electronics, Information and Communication Engineers

雑誌

電子情報通信学会論文誌 B (ISSN:09151885)

巻号頁・発行日

vol.J77-B1, no.3, pp.132-140, 1994-03-25

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本論文では,Manhattan Street Network(MS-Net),ShuffleNet(SH-Net)およびShuffle-Exchange Network(SX-Net)を対象にして,う回ルーチング(deflection routing)を行ったときのエンドユーザ間での性能を,シミュレーションによって評価・比較している.まず,ユーザからネットワーク内へのパケットの送出モードとして,新たにSCANモード(ユーザから発生するパケットを適宜選択して送出するモード)を考え,従来のFIFOモード(先着順に送出するモード)との得失を検討している.その結果,三つのネットワークにおいて,どちらの送出モードを用いても,中継バッファの容量が2であれば,無限大のときとほぼ同じ性能が得られること,MS-NetおよびSH-NetにおいてはSCANモードの方が,SX-NetにおいてはFIFOモードの方が優れていることを明らかにしている.次に,三つのネットワークの性能を相互に比較し,ノード数の少ない小規模なネットワークではMS-NetとSH-Netが優れており,大規模なネットワークではSX-NetとSH-Netが優れていることを明らかにしている.