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Dive into the research topics where Takeshi Koide is active.

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Featured researches published by Takeshi Koide.


International Journal of Reliability, Quality and Safety Engineering | 2005

EFFICIENT COMPUTATION OF NETWORK RELIABILITY IMPORTANCE ON K-TERMINAL RELIABILITY

Takeshi Koide; Shuichi Shinmori; Hiroaki Ishii

This paper proposes an algorithm to compute marginal reliability importance for network systems with k-terminal reliability efficiently. Marginal reliability importance is an appropriate quantitative measure on a system component against system reliability and it contributes to design of reliable systems. Computing marginal reliability importance in network systems is time-consuming due to its NP-hardness. This paper extends the algorithm proposed in our last study to deal with k-terminal reliability and incorporates an extended factoring theorem to improve the algorithm. Numerical experiments compare the proposed algorithm with a traditional method to reveal efficiency of the algorithm. The algorithm helps to construct efficient algorithm to reliable network design problems.


International Journal of Quality & Reliability Management | 2005

Comparison between two scale‐inspection and warranty policies for weight‐quality

Hiroaki Sandoh; Takeshi Koide

Purpose – To make a theoretical comparison between two scale‐inspection and warranty policies for weight‐quality, one practical and the other theoretically grounded.Design/methodology/approach – Comparison is made in a Stackelberg game framework considering the consumers as well as the manufacturers viewpoint.Findings – The practical policy is more profitable for the manufacturer than the theoretical policy in many cases.Research limitations/implications – The study confines itself to scale‐inspection and warranty policies, but the underlying approach used in this paper can also be applied to other topics.Practical implications – The proposed model can also provide a lower bound for the warranty.Originality/value – The study compares a practical policy with a theoretical one from both the consumers and manufacturers point of view.


International Journal of Production Economics | 2005

The hotel yield management with two types of room prices, overbooking and cancellations

Takeshi Koide; Hiroaki Ishii


Archive | 1999

The Evaluations on Lower Bounds of All-Terminal Reliability by Arc-Packings for General Networks

Takeshi Koide; Shuichi Shinmori; Hiroaki Ishii


IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences | 2004

An improved algorithm to compute marginal reliability importance in a network system

Takeshi Koide


神戸学院経済学論集 | 2004

A Study of a Management Model for a Hotel Booking

Takeshi Koide; Hiroaki Ishii


日本オペレーションズ・リサーチ学会春季研究発表会アブストラクト集 | 2004

ネットワーク信頼性重要度を計算するアルゴリズムの拡張(信頼性(1))

Takeshi Koide; Shuichi Shinmori; Hiroaki Ishii


Proceedings of the 2004 Asian International Workshop (AIWARM 2004) | 2004

EFFICIENT COMPUTATION OF MARGINAL RELIABILITY IMPORTANCE IN A NETWORK SYSTEM WITH K-TERMINAL RELIABILITY

Takeshi Koide; Shuichi Shinmori; Hiroaki Ishii


Journal of The Operations Research Society of Japan | 2002

AN EFFICIENT COMPLETE ENUMERATION METHOD FOR NETWORK DESIGN PROBLEMS AND ITS APPLICATIONS

Takeshi Koide; Shuichi Shinmori; Hiroaki Ishii


Mathematica japonicae | 2000

A NEW ALGORITHM : FOR LOWER BOUNDS OF ALL-TERMINAL RELIABILITY

Takeshi Koide; Shuichi Shinmori; Hiroaki Ishii

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Hiroaki Ishii

Kwansei Gakuin University

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