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システム/制御/情報 Vol. 5 (1992), No. 12

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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  6. Vol. 32 (2019)

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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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  10. Vol. 28 (2015)

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  11. Vol. 27 (2014)

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  12. Vol. 26 (2013)

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  13. Vol. 25 (2012)

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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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  19. Vol. 19 (2006)

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  20. Vol. 18 (2005)

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  22. Vol. 16 (2003)

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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

27 Dec. (Last 30 Days)

システム/制御/情報 Vol. 5 (1992), No. 12

ベイズ定理の証拠理論への拡張について

前田 豊, 市橋 秀友

pp. 481-490

DOI:

10.5687/iscie.5.481

抄録

A generalized Bayes theorem in the frame of Shafer's theory of evidence is proposed. Smets proposed a procedure for obtaining a posterior basic probability assignment from prior and conditional basic probability assignments using Dempster rule of combination. We show that the uncertainty in the sense of non-specificity of a probability distribution changes by the Smets' procedure. Hence, it contradict with Bayes theorem. We formulate a new combination rule and construct a procedure for obtaining a posterior basic probability assignment without changing the uncertainty. We verify that the proposed rule is reduced to Bayes theorem when each of basic probability assignment is a regular probability assignment. It is also Jeffrey's rule when observation is obtained by a probability distribution and prior distributions are probability distributions.

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ニューラルネットワークによる高炉炉頂部の装入物プロフィールの認識

大塚 喜久, 小西 正躬, 門口 維人

pp. 491-498

DOI:

10.5687/iscie.5.491

抄録

Recently, neural network models have been applied to solve various problems and multi layer neural network with back propagation algorithm is shown to be useful for pattern recognition. In this paper, a recognition system for burden profile at the top of blast furnace using the neural network is described. Here, two problems of the neural network are studied. One is how to escape from local minima in learning process. For this purpose, a new method which updates the teaching data from simple to complicated one is proposed, and the effectiveness of the method is shown. Another problem is the selection of teaching data in recognition of scaler value, such as length. For this problem, two teaching data, which we call digital and analog type teaching data, are compared, and the digital type teaching data is shown to be better for the recognition of blast furnace data.

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アカモクの成長と生育環境に関する数学モデル

三宮 信夫, 鮑 爾敏, 中峯 浩, 坂本 亘, 荻野 洸太郎

pp. 499-506

DOI:

10.5687/iscie.5.499

抄録

Seaweed plays an important role in aquatic ecosystem. It supplies nutrient and provides the place of life for many kinds of living organism in the sea. In order to control the marine resources reasonably, a study on the growth dynamics of seaweed is necessary.
First, effects of solar radiation and water temperature on photosynthetic activity are considered. Secondly, a seasonal effect is introduced as a physiological phenomenon. Finally, a mathematical model of growth dynamics of Sargassum horneri is constructed from the idea of operating these effects multiplicatively. The model, parameters are determined on the basis of the observation data which were measured for Sargassum horneri at Notojima Aquarium, Ishikawa Prefecture. By a computer simulation, the weight of Sargassum horneri is estimated for any change of the environmental conditions.

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二重構造適応観測器のロバスト性

李 勇, 米澤 洋, 西村 行雄

pp. 507-512

DOI:

10.5687/iscie.5.507

抄録

The usual process identification methods for parameter adjustment, along with dead zone, are effective in providing a robust adaptive observer of an unknown plant under uncertain input disturbance and output measurement noise. But it is difficult to decide the size of the dead zone due to the lack of knowledge concerning the disturbance. Furthermore, an error may remain in the dead zone despite the existence or nonexistence of the disturbance and the noise. In this paper, we propose a double-adaptive observer and discuss its robustness. Unlike previous work, this scheme does not introduce parameters that depend on the characteristics of the unknown disturbance. So, when the disturbance or the noise does not exist, the parameters converge over time. The stability of the system is discussed and computer simulation results are presented.

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局所展開法による面の傾き抽出手法

伊東 敏夫

pp. 513-520

DOI:

10.5687/iscie.5.513

抄録

This paper is concerned with an extended shape from shading and a photometric stereo using local shading analysis. In general the direction of the steepest change in the image plane corresponds to the steepest gradient of the reflectance map. The local shading expansion method is proposed using this characteristic. The shape from shading can be applied locally.by use of this method to extract surface orientation of objects with uniform Lambertian reflectance properties. The number of light sources of the photometric stereo can be reduced to two light sources by use of this local shading expansion method. Surface orientation of objects with non-uniform Lambertian or uniform specular reflectance properties can be obtained using this photometric stereo.
This paper presents the local shading expansion method and shows reconstructed shapes of objects using extracted surface orientation by this method.

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シミュレーションによる魚群行動の成群機構に関する考察

モハメッドアリ ドウスタリ, 三宮 信夫

pp. 521-523

DOI:

10.5687/iscie.5.521
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