Steel Science Portal

Transactions of the Institute of Systems, Control and Information Engineers
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 2185-811X
PRINT ISSN: 1342-5668

Transactions of the Institute of Systems, Control and Information Engineers Vol. 17 (2004), No. 3

  • Experiments of a New Meta-Heuristics to Reduce the Search Space by Partially Fixing of the Solution Values

    Kazumiti NUMATA, Yukinobu IWAKURA

    pp. 103-112

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.17.103

    Abstract

    In this paper we present a new meta-heuristic approach to the traveling Salesman problem (TSP) and evaluate its performance. Proposed method reproduces and selects a population of local optima searched by random start modified Lin-Kernighan (mLK) method. It enhances the search power and efficiency of mLK by fixing the part of the solution whose values coincide each other and thus reducing the search space of solutions. Results of numerical experiments on TSPLIB95 (500 or so cities instances) show that it is superiorly competitive to existing meta-heuristic methods for TSP. The reason of enhanced search power is also investigated through obserbation of its search processes.

  • A Method for Solving Jobshop Scheduling Problems with Limited Common Buffers

    Gui Fu, Yong ZHAO, Nobuo SANNOMIYA

    pp. 113-121

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.17.113

    Abstract

    A new jobshop scheduling problem with limited common buffers is dealt with in this paper. The standard genetic algorithm is not applicable to the present problem for deadlocks led by buffer constraints. A new algorithm is proposed by combining the genetic algorithm (GA) with a semi-active decoding which avoids deadlocks and satisfies the buffer constraints. Some benchmark problems appending with buffer constraints are tested by both the proposed GA and the multi-start local search method (MLS). Computation results show that the proposed GA outperforms MLS well. Computation is also made by varying the number of common buffers. These results are compared among the available results of the no-buffer jobshop problem and the normal jobshop problem. Consequently the results of the proposed GA are satisfactory.

  • Optimal Structure of Decision-tree-based Pairwise Support Vector Machines

    Fumitake TAKAHASHI, Shigeo ABE

    pp. 122-130

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.17.122

    Abstract

    Decision Directed Acyclic Graph (DDAG) and Adaptive Directed Acyclic Graph (ADAG) are the decision-tree-based support vector machines for multiclass problems. These methods show high generalization abilities but their abilities depend on the structures. In this paper, we determine the structures so that the unclassifiable regions caused by voting are resolved by the decision boundaries for class pairs with low generalization ability. Namely, at the higher level of the tree, we select a pair of classes with higher generalization ability that is estimated by the error bounds proposed for SVMs. We demonstrate the effectiveness of our method using benchmark data sets.

  • Analysis and Synthesis of Model Reference ILQ Servo System with Tracking Robustness

    Sadaaki KUNIMATSU, Masakazu FUJII, Takao FUJII

    pp. 131-138

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.17.131

    Abstract

    In this paper, we propose a design method for servo systems with tracking robustness. Here we consider the control configuration of robust servo system plus a reference model, in which the robust servo system is designed by the ILQ design method as proposed by the third author. First, we show the configuration of this servo system and then provide a theoretical basis for parameter tuning. Second, we clarify the relation between these parameters and the closed loop performance such as robust stability and tracking robustness. Finally we establish a new design method of ILQ servo system with tracking robustness, and show its effectiveness by a numerical example.

  • An Adaptive Equalizer for Stochastic Communication Channels with the EM Algorithm

    Takao KOMOTO, Kazunori IWATA, Kazushi IKEDA, Kazunori HAYASHI, Hideaki SAKAI

    pp. 139-141

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.17.139

  • © 2004 THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

Article Access Ranking

20 Oct. (Last 30 Days)

  1. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  2. Composition Changes of Inclusions by Reaction with Slag and Refractory: A Review ISIJ International Vol.60(2020), No.9
  3. Mechanism of Corrosion Protection at Cut Edge of Zn-11%Al-3%Mg-0.2%Si Coated Steel Sheets ISIJ International Vol.60(2020), No.9
  4. Accuracy Improvement of the XRD-Rietveld Method for the Quantification of Crystalline Phases in Iron Sintered Ores through the Correction of Micro-absorption Effects ISIJ International Advance Publication
  5. Permeability Coefficient of Oxygen in Molten Slags and Its Mechanisms ISIJ International Vol.60(2020), No.9
  6. Formation, Evolution and Removal of MgO·Al2O3 Spinel Inclusions in Steel ISIJ International Advance Publication
  7. Effect of the Moisture Content of Coal Blends on Coke Structure and its Apparent Gasification Kinetics with CO2 ISIJ International Vol.60(2020), No.9
  8. Mechanism of Improved Ductility of 1500 MPa-class Ultra-high Strength Cold-rolled Steel Sheet Produced by Rolling and Partitioning Method ISIJ International Vol.60(2020), No.9
  9. Effect of Wettability on Penetration and Flotation Behavior of a Particle in Refining Process Tetsu-to-Hagané Vol.106(2020), No.10
  10. Evolution of Inclusions after Cerium and Titanium Addition in Aluminum Deoxidized Fe-17Cr-9Ni Austenitic Stainless Steel ISIJ International Vol.60(2020), No.9

Search Phrase Ranking

20 Oct. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. ultrasonic testing bar small diameter
  4. blast furnace permeability
  5. ultrasonic inclusion
  6. steel
  7. continuous casting of copper alloys
  8. isij international
  9. precipitate
  10. stabilizer bar