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システム/制御/情報 Vol. 21 (2008), No. 11

ISIJ International
belloff
オンライン版ISSN: 2185-811X
冊子版ISSN: 1342-5668
発行機関: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

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  1. Vol. 37 (2024)

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  7. Vol. 31 (2018)

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  8. Vol. 30 (2017)

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  9. Vol. 29 (2016)

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  11. Vol. 27 (2014)

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  12. Vol. 26 (2013)

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  14. Vol. 24 (2011)

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  17. Vol. 21 (2008)

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  18. Vol. 20 (2007)

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  23. Vol. 15 (2002)

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  24. Vol. 14 (2001)

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  25. Vol. 13 (2000)

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  26. Vol. 12 (1999)

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  27. Vol. 11 (1998)

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  28. Vol. 10 (1997)

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  29. Vol. 9 (1996)

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  30. Vol. 8 (1995)

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  31. Vol. 7 (1994)

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  32. Vol. 6 (1993)

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  33. Vol. 5 (1992)

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  34. Vol. 4 (1991)

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  35. Vol. 3 (1990)

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  36. Vol. 2 (1989)

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  37. Vol. 1 (1988)

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    5. No.3
    6. No.2
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キーワードランキング

03 Dec. (Last 30 Days)

システム/制御/情報 Vol. 21 (2008), No. 11

レドックスフロー電池の組電池システムにおけるユニット間相互作用の動特性と設計パラメータの検討

李 明華, 引原 隆士

pp. 343-348

DOI:

10.5687/iscie.21.343

抄録

A power supply with high voltage and large current is used to be achieved by connecting several batteries in series or parallel. In this paper, a model of coupled redox flow (RF) batteries is derived based on chemical reaction. The model clearly shows the influences of imbalance of battery's unit. The numerical discussion leads us to dynamic design of the redox flow batteries.

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レドックスフロー電池の組電池システムにおけるユニット間相互作用の動特性と設計パラメータの検討

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Ris

パラメータ可変型2次補間カーネルによるディジタル画像の解像度向上

杉田 泰則, 磯辺 亮, 吉川 敏則, 相川 直幸

pp. 349-357

DOI:

10.5687/iscie.21.349

抄録

This paper presents a quadratic kernel with four variable parameters for image enlargement. The proposed kernel can generate peak and valley information of the signals by considering the characteristics of the image and by changing these parameters. Moreover, as the proposed kernel is the extension of the linear interpolation and the nearest-neighbor interpolation, the forms of the proposed kernel are also used selectively depending on the characteristics of signal points which are used for parameter estimation. The various standard images are enlarged using the proposed kernel, and the performance of the proposed kernel is evaluated with MSE of the enlarged images. It has been shown that the performance of the proposed kernel is better than the other methods, such as the cubic interpolations that are often used in image processing.

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パラメータ可変型2次補間カーネルによるディジタル画像の解像度向上

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世代別積立方式に基づく公的年金制度への移行方法

番匠 大輔, 田村 坦之, 村田 忠彦

pp. 358-367

DOI:

10.5687/iscie.21.358

抄録

In this paper, we propose transferring methods from the present pay-as-you-go scheme to a generation-based funding scheme. We make a mathematical model for the public pension system consisting of national pension, employee pension and mutual pension. Simulating the mathematical model the necessary government contribution is evaluated for the case with or without transferring to the generation-based funding scheme where we take into account the demographic structural change and the variation in economic situation.

mendeley

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世代別積立方式に基づく公的年金制度への移行方法

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ハイブリッドシステムの可到達性による電圧不安定性の解析

薄 良彦, 引原 隆士

pp. 368-376

DOI:

10.5687/iscie.21.368

抄録

Analysis of voltage instability of power systems is of basic importance for prevention of cascading outages and large blackouts. We propose to use reachability analysis of hybrid automaton for voltage instability analysis of power systems. Hybrid automaton is a well-known mathematical model of hybrid systems. Reachability analysis is performed by computing forward or backward reach sets for unsafe sets of a hybrid automaton. The automaton can represent the interaction between continuous voltage oscillation and discrete control of power equipments. The unsafe sets are also subsets of state space in which system voltages show unacceptable levels such as low or high values. For single machine-load bus (SMLB) system with controlled route switching, we show that computation of backward reach sets of hybrid automaton makes it possible to determine voltage instability in the SMLB system. The obtained result implies that voltage instability leading to cascading outages can be detected before its occurrence.

mendeley

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ハイブリッドシステムの可到達性による電圧不安定性の解析

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Ris

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