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1 0 0 0 Diffusion-Type Autonomous Decentralized Flow Control for End-to-End Flow in High-Speed Networks(Network)

著者: TAKANO Chisa AIDA Masaki
出版者: 一般社団法人電子情報通信学会
雑誌: IEICE transactions on communications (ISSN:09168516)
巻号頁・発行日: vol.88, no.4, pp.1559-1567, 2005-04-01
参考文献数: 13
被引用文献数: 11

We have proposed diffusion-type flow control as a solution for the extremely time-sensitive flow control required for high-speed networks. In our method of flow control, we design in advance simple and appropriate rules for action at the nodes, and these automatically result in stable and efficient network-wide performance through local interactions between nodes. Specifically, we design the rules for the flow control action of each node that simulates the local interaction of a diffusion phenomenon, in order that the packet density is diffused throughout the network as soon as possible. However, in order to make a comparison with other flow control methods under the same conditions, the evaluations in our previous studies used a closed network model, in which the number of packets was unchanged. This paper investigates the performance of our flow control method for an end-to-end flow, in order to show that it is still effective in more realistic networks. We identify the key issues associated with our flow control method when applied to an open network model, and demonstrate a two-step solution. First, we consider the rule for flow control action at the boundary node, which is the ingress node in the network, and propose a rule to achieve smooth diffusion of the packet density. Secondly, we introduce a shaping mechanism, which keeps the number of packets in the network at an appropriate level.

2018-03-09 01:45:15
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https://ci.nii.ac.jp/naid/10016564001

1 0 0 0 高周波電磁界照射のウサギ局所循環およびモルモット皮下組織に及ぼす影響

著者: 青山美子植田康志栗田源彦大橋秀法鳥潟親雄前島一淑
出版者: 公益社団法人日本実験動物学会
雑誌: Experimental Animals
巻号頁・発行日: vol.41, no.4, pp.421-435, 1992

高周波電磁界の生体に及ぼす影響を検索することを目的として, 高周波電磁界の発生装置をウサギ耳介に装着し, 赤外線サーモグラフィによる皮膚表面温度, レーザードップラー血流計による皮膚血流量, ビデオマクロスコープによる細動静脈血管径の変化を測定した。周波数9MHzの高周波電磁界15分間照射によって, 局所の細動脈血管の拡張は認められなかったが, 明らかな皮膚表面温度の持続的な上昇, ならびに, 細静脈血管の拡張と血流量の増加傾向が観察され, 微小循環の亢進が確認された。又, モルモットに対する高周波電磁界の有害作用 (周波数9MHz, 1日8時間×30日間照射) は, 一般行動, 飼料摂取量, 体重, 臓器重量, 血液生化学値, 剖検所見, 組織学的所見では認められなかった。