研究者詳細 - 柳川　佳也

ガソリンスタンドにおける自動勤務表スケジューリング

視認率を考慮した書店におけるディスプレイ法

義若紘史, 柳川佳也, 宮崎茂次

生産管理 13 ( 1 ) 11 - 18 2006年8月

宮崎茂次, 柳川佳也

生産管理 12 ( 2 ) 85 - 91 2006年1月

テーマパークにおける人材教育と運営の効率

金本孝泰, 柳川佳也, 宮崎茂次

生産管理 12 ( 2 ) 25 - 33 2006年1月

Automatic attendance sheet scheduling in a gas station

Miyazaki Shigeji, Yanagawa Yoshinari

Proceedings of the 11th International Conference on Industrial Engineering Theory, Applications; Practice 2006年

Sequencing Method for Products of Various Assembly Time and Different Parts Prices at a Single Workstation－ Mixed-model Assembly Scheduling Problem in JIT Production System

Jianjun Zhang, Shigeji Miyazaki, Yoshinari Yanagawa

Proceeding of Seventeenth Annual POM Conference, CD-Proceeding 2006年

University education and employment in Japan. Students' perceptions on employment attributes and implications for university education

Nguyen Danh Nguyen, Yanagawa Yoshinari, Miyazaki Shigeji

Quality Assurance in Education 13 ( 3 ) 202 - 218 2005年

記述言語：英語

Purpose - The present research aims to explore students' perceptions of the needs of employers in terms of the personal qualities of higher education graduates. Design/methodology/approach - Questionnaires were delivered to students at four universities in the Chugoku area of Japan. The students were asked to indicate how important they thought each of the personal qualities that would be needed for their future employment, and their own evaluation of their capabilities with respect to each personal quality. In addition, respondents were asked to answer other questions in relation to satisfaction with their courses, job opportunities, and sources of their personal qualities. Findings - The key findings are that job-seeking students tend to have a lower assessment of their own abilities than their perceived importance of those abilities. In particular, students rated their abilities significantly lower in communication and presentation skills. Although they rated themselves highly in terms of optimism, cooperation, and responsibility, they were dissatisfied with their personal traits in terms of taking initiative, having flexibility, and (especially) in demonstrating an entrepreneurial mind. Research limitations/implications - The sample is limited to university students in a limited geographical area of Japan. The generalizability of the results could therefore be questioned. Practical implications - The study represents a useful source of information and impartial advice for undergraduate students planning to find a job, and for higher-education academic staff and administrators managing undergraduate programs. Originality/value - This paper fulfils an identified information and resources need, and offers practical help to reform teaching and career-development processes in Japanese higher education. © Emerald Group Publishing Limited.

DOI： 10.1108/09684880510607945

Scopus

単一組立工程における異なる部品価格を考慮した製品の投入順序決定法

張家俊, 柳川佳也, 宮崎茂次

日本経営工学会論文誌 55 ( 5 ) 227 - 233 2004年

記述言語：日本語出版者・発行元：公益社団法人日本経営工学会

JIT生産方式における多品種の組立スケジューリング問題では, 従来部品在庫量を減らすため, 組立工程で消費される部品の消費速度を一定に保つとしたスケジューリングが多かった.Just-in-time生産方式の最大の目的は, 「製造にかかるコストを極限まで低減させる」ことである.つまり資本生産性の上昇を図り, 会社全体の生産性向上を意図したものである.いままでいずれの研究においても, 生産コストのことは直接には触れられていない.したがって, 本研究では, 単一組立工程で異なる部品構成, および異なる部品価格をもつ多品種の製品組立スケジューリング・モデルにおいて, 部品の量だけではなく使用しているすべての部品の購入価格を考慮し, 部品購入費用のばらつきを減らすことを目的として, 目標追跡法に基づいた製品の投入順序解法を新たに提案する.さらに, 提案法を評価するために, 種々な数値例を解き, 提案法の有効性を示す.また, 提案法と目標追跡法を用いて得られた結果を比較する.

DOI： 10.11221/jima.55.227

Value of Higher Education Service: Different Viewpoints and Managerial Implications

Nguyen Danh Nguyen, Yoshinari Yanagawa, Shigeji Miyazaki

Proceeding of Second World Conference on POM and Fifteenth Annual POM Conference 2004年

Products sequencing method in consideration of different parts price in an assembly process price-based goal chasing method

Y Yanagawa, Z Jiajun, M Shigeji

ICIM' 2004: PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON INDUSTRIAL MANAGEMENT 291 - 298 2004年

記述言語：英語出版者・発行元：CHINA AVIATION INDUSTRY PRESS

A number of papers have dealt with the sequencing problem and proposed products sequencing methods since the original goal chasing method was proposed. The papers have targeted to reduce gap between actual inventory level based on actual products sequencing and ideal inventory level based on each proposed method because the goal chasing method and other many methods have targeted to keep consumption rate of each parts constant. To keep parts consumption rate is one of the most important purposes in Just-in-Time production system because it is difficult to operate pull system under fluctuating parts consumption rate.
One of the purposes of JIT production system, however, is not only to trim total inventory level but also to trim total inventory value and to increase profits. We propose a new mixed-model products sequencing method based on Value-based goal chasing method to reduce variations in purchase expense of parts at an assembly process in JIT production system. We show effectiveness of the proposed heuristic methods by numerical experiments.

Web of Science

Value of Higher Education : Different Viewpoints and Managerial Implications

Nguyen Danh Nguyen, Yoshinari Yanagawa, Shigeji Miyazaki

Proceeding of Eight International Conference on Manufacturing and Management 2004年

Using Lean Thinking to Identify Higher Education Improvement

Nguyen Danh Nguyen, Yanagawa Yoshinari, Miyazaki Shigeji

Proceedings of the Second International Conference on Management Education for 21st Century, Section of Management Education 2003年

Time-based goal chasing method for mixed-model assembly line problem with multiple work stations

K Kurashige, Y Yanagawa, S Miyazaki, Y Kameyama

PRODUCTION PLANNING & CONTROL 13 ( 8 ) 735 - 745 2002年12月

記述言語：英語出版者・発行元：TAYLOR & FRANCIS LTD

In sequencing problems for mixed-model assembly line in JIT production system, the Goal Chasing method (GC) is widely used for parts used leveling goal. The difference in assembly time of each product is not taken into consideration in the Goal Chasing method. Assembly time usually varies with product types. In recent years, the Time-Based Goal Chasing method (TBGC) has been proposed. The advantage of TBGC is to consider the influence of different assembly time of each product and idle time in production period. TBGC, however, has been only applied to single work station problems. In this paper, TBGC is applied to an assembly line problem with multiple work stations. Furthermore, the sequencing method and use of Simulated Annealing (SA) or Local Search (LS) for this problem are proposed.

DOI： 10.1080/0953728031000057325

Web of Science

2工程フローショップ・モデルにおける利益最大化スケジューリング

栢木紀哉, 柳川佳也, 宮崎茂次

日本機械学会論文集. C編 68 ( 672 ) 2502 - 2509 2002年8月

記述言語：日本語出版者・発行元：一般社団法人日本機械学会

This paper presents a scheduling method to maximize total profit as a performance measure in a two-stage flow shop model. The profit is defined as the difference between the revenue and the cost of production, and a scheduling method to maximize total profit is proposed using the Branch and Bound method aiming at maximizing revenue and minimizing costs. This paper compares the optimal schedule which maximize total profit with the optimal schedule which minimize total flow time searched by Johnson's theory. This paper also shows the usefulness and some characteristics of the proposed method through various numerical experiments.

DOI： 10.1299/kikaic.68.2502

単一工程モデルでの利益最大化生産スケジューリング

栢木紀哉, 柳川佳也, 宮崎茂次

システム制御情報学会論文誌 15 ( 4 ) 203 - 212 2002年4月

記述言語：日本語出版者・発行元：一般社団法人システム制御情報学会

Various scheduling methods have been proposed in order to minimize total flow time or total actual flow time, and thereby promote efficient production. However, such methods are not so effective to maximize company profit, given that requests from customers and the prices of products have grown widely diversified in recent years. In such a case, it must be determined whether the profit can be maximized when both flow times are minimized. This paper proposes an optimal scheduling method which maximizes total profit as a performance measure in a single machine model. Our computational experiments show the usefulness and characteristics of the proposed method.

DOI： 10.5687/iscie.15.203

炭素税の導入による国内貨物輸送への影響に関するシミュレーション・モデル

単一工程モデルによる利益最大化スケジューリングの提案(統合オペレーション(1))

栢木紀哉, 柳川佳也, 宮崎茂次

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 2002 68 - 69 2002年3月

若林義啓, 柳川佳也, 宮崎茂次

生産管理 8 ( 2 ) 9 - 17 2002年3月

A simulation model regarding influence to domestic physical distribution by carbon tax

Y Wakabayashi, Y Yanagawa, S Miyazaki

ICIM' 2002: PROCEEDINGS OF THE SIXTH CHINA-JAPAN INTERNATIONAL CONFERENCE ON INDUSTRIAL MANAGEMENT 477 - 483 2002年

記述言語：英語出版者・発行元：CHINA AVIATION INDUSTRY PRESS

The present domestic physical distribution in Japan mainly depends on trucks. The track, however, is not good for environment. It was decided internationally in recent years that the amount of discharged CO2 should be restrained because it is main cause of the global warming. We can, therefore, expect that carbon tax will be introduced in Japan, but influence to the distribution system by the carbon tax is unknown.
In this research, we examine the influence how much the carbon. tax rate may affect the amount of discharged CO2 in the domestic physical distribution.

Web of Science