Papers - Inada, Shuhei

Method for Determining the Economic Make-or-Buy Partition in a Serial Production Process Using the Payback Period

Sumi H., Inada S.

Japan Industrial Managemnt Association (Japan Industrial Managemnt Association)  75 ( 4E ) 183 - 194 2025.01

Research paper (scientific journal), Joint Work, Last author, Corresponding author, Accepted

Investigating Method of Non-Conformities in Producer Goods Companises -Proposal of Hidden Flaws in Producer Goods -

Uchida I., Inada S., Nakamura Z.

Human Factors in Japan (The Society for Industrial Plant Human Factors of Japan)  29 ( 1 ) 26 - 34 2024.08

Research paper (scientific journal), Joint Work, Corresponding author, Accepted

離散イベントシミュレーションを利用した応援作業者を含む業務の効率改善　-外食店舗を考察対象にした事例研究-

竹内華帆，角晴美子，稲田周平

日本経営工学会論文誌 72 ( 4 ) 212 - 222 2022.01

Research paper (scientific journal), Joint Work, Corresponding author

Greedy Policies for the Storage Location Management in the Distribution Center

角晴美子，稲田周平

J. of Japan Industrial Management Association 72 ( 4E ) 234 - 244 2022.01

Research paper (scientific journal), Joint Work, Corresponding author, Accepted

Search algorithm of the assembly sequence of products by using past learning results

Watanabe K., Inada S.

International Journal of Production Economics (International Journal of Production Economics)  226 2020.08

ISSN  09255273

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© 2020 In the future smart factory, the production system will further head in the direction of on-demand production. Products will be assembled one by one based on different specifications of customers. In these recognitions, this paper considers a method for raising productivity of the robot work cell. Under the assumption that the dual-arm robot assembles products in the work cell where one robot is in charge of all steps of assembling the product, we propose a computational algorithm for searching the efficient assembly sequence and work assignment to the robot hands utilizing reinforcement learning. Furthermore, we intend to use past learning results to determine work plans of robots more effectively. The proposed methods can eliminate or decrease the workload of the robot teaching. In addition, they can contribute to shorten the assembly time of products by giving the efficient work plan. In this research, the basic theory for automating the work planning of actual assembled products is considered using a building block model.

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Improvement of order picking operations in distribution centers by focusing on floor layout and product storage location

Sumi H., Inada S.

Journal of Japan Industrial Management Association (Journal of Japan Industrial Management Association)  71 ( 2 ) 47 - 57 2020

ISSN  13422618

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© 2020 Japan Industrial Management Association. All rights reserved. Due to the rapid growth of electronic commerce via the Internet, there is a need to streamline the supply chain in order to reduce product distribution costs and shorten delivery lead times. Among these, the role of distribution centers that connect physical and commercial distribution has become more important. Improvement in work efficiency in the distribution centers has also become an important theme. Aware of such problems, we focus on order picking operations where products are collected based on the customer order since it is one of the most labor-intensive activities in the distribution center. We consider methods to shorten the average traveling distance of order-picking operators from two perspectives: 1) Improving the floor layout of the distribution center, and 2) introducing better management rules to determine the storage position of products. In the first half of the paper, the mathematical model to evaluate the average traveling distance of the picker is proposed. The model proposed assumes that the width of the aisle and the size of the shelf are sufficiently small, and obtains the value of the traveling distance analytically. In addition, improvement measures are considered from the two perspectives stated above, and are evaluated by comparing with the case in conventional Traditional Layout with horizontal and vertical aisles. In the second half of the paper, two improvement measures combining the two perspectives are proposed based on the results of the first half of the paper. Both measures move the accumulation point of products to the center of the lower side of the floor. In addition, the first measure adopts the addition of a diagonal aisle on the floor and class-based management to determine the storage position of products. The second measure executes class-based storage in an area where the work floor is divided using diagonal straight lines, which means being equidistant from the accumulation point of products. As a result, this paper clarifies that the two improvement measures proposed in the second half of the paper shorten the average traveling distance by 25% or more compared to case in conventional Traditional Layout.

単一製品の販売価格・販売量・市場寿命の不確実性に対する製造投資案の安全性分析

稲田周平，市来嵜治

日本経営工学会論文誌 70 ( 2 ) 62 - 70 2019.07

Research paper (scientific journal), Accepted

Safety analysis of manufacturing investment alternatives under uncertainty of product selling price, sales volume and market life

Inada S., Ichikizaki O.

Journal of Japan Industrial Management Association (Journal of Japan Industrial Management Association)  70 ( 2 ) 62 - 70 2019

ISSN  13422618

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© 2019 Japan Industrial Management Association. All rights reserved. With the recent diversification of product preferences and increasing competition among companies, uncertainty of product demand is increasing. Product market life becomes shorter and precise prediction of selling price, sales volume and market life of products is becoming difficult. As an analysis on investment for product manufacturing, it is insufficient to only calculate the profit/loss under their expected values. There is a need for a method to quantitatively evaluate the risk of investment proposals. Within such a social background, this paper considers a method for evaluating the profitability and safety of manufacturing investment alternatives under the assumption that product selling price, sales volume and market life are uncertain. In the research, the concept of safety is first defined as the change in the rate of uncertain factors until the profit becomes zero. Next, the paper proposes a method for visualizing the profitability and safety of investment alternatives. In the method proposed, manufacturing investment alternatives are represented as triangles in the X-Y plane indicating the initial investment amount, annual fixed cost and unit variable cost. This method makes it possible to observe superiority or inferiority of the investment alternatives from the viewpoint of profitability and safety against uncertain change of product selling price, sales volume and market life. In addition, the proposed method by using the X-Y plane can help to examine new investment alternatives with improved profit and safety. For example, it can consider improved alternatives which raise safety against shortening market life while maintaining the target profit by reducing the initial investment amount and increasing the unit variable cost.

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強化学習を利用した製品組立順序の自動探索

渡邊敬次郎，荒井恭佑，稲田周平

日本経営工学会論文誌 69 ( 3 ) 121 - 130 2018.10

Research paper (scientific journal), Accepted

極値分布を用いた突発的な大口需要の予測法に関する研究

中塚昭宏，稲田周平，松川弘明

日本経営工学会論文誌 69 ( 3 ) 153 - 161 2018.10

Research paper (scientific journal), Accepted

A method for searching assembly orders by utilizing reinforcement learning

Watanabe K., Arai K., Inada S.

Journal of Japan Industrial Management Association (Journal of Japan Industrial Management Association)  69 ( 3 ) 121 - 130 2018

ISSN  13422618

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© 2018 Japan Industrial Management Association. All rights reserved. In recent years, the movement to introduce robots in production systems with the aim of replacing manual labor or combining manual and robot labor has started. In particular, dual-arm robots, which have two robotic arms, are gaining much attention in view of their ability to replace manual laborers. However, planning an efficient work system beforehand and teaching the lean movements to the robots are essential for using them more effectively. In assembly processes, the result of selecting the assembly order greatly influences the productivity of the production process. In such a background, this paper examines a method for determining an assembly order with high work efficiency. Under the assumption that dual-arm robots assemble the products that can be assembled easily (i.e., stacking toy blocks is used here), we propose a computational model for searching a highly efficient assembly order utilizing reinforcement learning. We also consider a method for using the results of previous learning model studies to effectively find solutions for new assembly models. Regression analysis is utilized to transfer the past learning results.

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Application of the Cumulative Flow Graph to the Case of a Parallel Flow System Based on Stock Quantity

市耒嵜治，片桐健吾，稲田 周平，河野宏和

日本経営工学会論文誌 68 ( 3 ) 191 - 200 2017.10

Accepted

Performance Evaluation of the Aisle Layout Design in the Distribution Center

Taiki Kawamoto, INADA SHUHEI

Proceedings of the 18th International Conference on Industrial Engineering  2016.10

Research paper (international conference proceedings), Accepted

A FUNDAMENTAL ROBOT WORK SYSTEM　EQUIPPED WITH THE SELF-IMPROVEMENT MECHANISM

INADA SHUHEI, Takahira Yamaguchi, Masashi Fuchizawa, Kyosuke Arai

Proceedings of the 18th International Conference on Industrial Engineering  2016.10

Research paper (international conference proceedings), Accepted

視点データに基づく作業システムにおける「迷い」の検出

市来嵜治，前川昌彦，稲田周平

日本設備管理学会誌 24 ( 4 ) 254-266 2013.04

Research paper (scientific journal), Joint Work, Accepted

複数の製品種を製造する場合の投資案の安全性分析

稲田周平，長町悠樹，坂田啓

日本経営工学会論文誌 64 ( 1 ) 53-62 2013.04

Research paper (scientific journal), Joint Work, Accepted

A Case Study on Optimal Allocation of Call Center Staff - With Unused Phones and Repeated Calls Situation Considered -

Masahiko Tanaka, Hangfeng Luo, Shuhei Inada, Akihiro Nakatsuka

Innovation and Supply Chain Management 7 ( 1 ) 25-31 2013.03

Research paper (scientific journal), Joint Work, Accepted

現場改善を通じた改善力の向上

稲田周平

IEレビュー誌 53 ( 3 ) 4-5 2012.08

Research paper (other academic), Single Work

日本一のブランドを目指した改善活動（柿本榮三美容室）

柿本哲，稲田周平

IEレビュー誌 53 ( 2 ) 37-44 2012.05

Research paper (other academic), Joint Work

An Analysis on Make-or-Buy Decision Making in Serial Production System

De-bi Cao, Bongsung Chu, INADA SHUHEI

17th International Working Seminar on Production Economics  2012.02

Research paper (conference, symposium, etc.), Joint Work, Accepted

現場力の強化に向けて

INADA SHUHEI

IEレビュー誌 52 ( 3 ) 4-5 2011.08

Research paper (other academic), Single Work

可視化・整流化をベースにした改善フレームワークの実証研究

稲田 周平

生産システム見える化展  2010.11

Research paper (conference, symposium, etc.), Single Work

可視化・整流化をベースにした工場改善への取り組み

稲田 周平

日本生産管理学会第32回全国大会講演論文集    321-324 2010.09

Research paper (conference, symposium, etc.), Single Work

病院におけるIE技術の活用

井出下久登，稲田 周平

IEレビュー vol. 51 ( No. 2 ) 17-22 2010.05

Research paper (scientific journal), Joint Work

RFID投資効果と普及における問題について

中塚昭宏，稲田 周平，曹徳弼

日本生産管理学会論文誌 Vol. 16 ( No. 2 ) 15-24 2010.03

Research paper (scientific journal), Joint Work, Accepted

製造プロセスの可視化・整流化活動を基盤にした現場改善

稲田 周平

生産システム見える化展  2009.11

Research paper (other academic), Single Work

多種変量・短納期生産力の強化に向けて

稲田 周平

生産システム見える化展  2009.11

Research paper (other academic), Single Work

作業者の手の動きに着目した作業分析用フレームワークの提案

稲田 周平

日本生産管理学会第30回全国大会講演論文集    229-232 2009.09

Research paper (conference, symposium, etc.), Single Work

設備管理活動を基調にしたモノ作り力の確立

稲田 周平

IEレビュー誌 Vol. 50 ( No. 2 ) 48-53 2009.06

Research paper (scientific journal), Single Work

RFID投資効果と普及における問題について

中塚昭宏，稲田周平，曹徳弼

日本生産管理学会第29回全国大会講演論文集    189-192 2009.03

Research paper (conference, symposium, etc.), Joint Work

予測市場の収束可能性に関する考察

中塚昭宏，稲田 周平，石川浩一郎，曹徳弼

日本生産管理学会第29回全国大会講演論文集    185-188 2009.03

Research paper (conference, symposium, etc.), Joint Work

応援作業者を活用した多段階生産ラインの設計

石垣綾，稲田周平，平川保博

日本経営工学会論文誌 Vol. 59 ( No. 5 ) 376-382 2008.10

Research paper (scientific journal), Joint Work, Accepted

RFID技術を活用した整流化・可視化生産情報システムの研究開発

稲田 周平

プラントエンジニア 40 ( 3 ) 38-44 2008.03

Research paper (scientific journal), Single Work

モノと情報の変化に着目したサービス・システムの分析手法の提案

INADA SHUHEI

日本経営システム学会全国研究発表大会講演論文集    134-137 2007.12

Research paper (conference, symposium, etc.), Single Work

ヒトの能力を引き出すモノ作り現場の実現

稲田 周平

IEレビュー誌 48 ( 4 ) 60-64 2007.10

Research paper (scientific journal), Single Work

企業独自のPull型の人材育成を

稲田 周平

生産性新聞    3 2007.09

Research paper (other academic), Single Work

サービス産業の生産性向上に資する製造業のノウハウに関する調査研究

稲田 周平，他

経済産業省委託調査研究報告書  2007.03

Research paper (other academic), Joint Work

Methods for the economical selection of the project comprised of fixed cost and variable cost

稲田 周平

Proceedings of the 6th Asia Pacific Industrial Engineering and Management Conference    9 pages 2005.12

Research paper (conference, symposium, etc.), Single Work, Accepted

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初期投資を含む長期的な製造投資プロジェクトが複数個与えられたときに，固定費と変動費の構造の中で，製品の需要変動に伴う利益の安全性を考慮しながら，プロジェクトの収益性を評価する方法を示している。

Optimal and heuristic solution methods for earliness and tardiness production scheduling and planning problems

石垣綾,稲田周平, Gilles Cormier,平川保博

J Jpn Ind Manage Assoc 56 ( 5 ) 321-329 2005.12

Research paper (scientific journal), Joint Work, Accepted

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多期間内に多品目の製品を製造する製造過程において，経済的に有利な製造ロットサイズを高速に計算するための最適アルゴリズムと近似アルゴリズムを提案したもの。

注文誘導型生産システムにおける参照モデルの提案

山本修一郎，中村善太郎，村瀬由堯，小岸宣夫，稲田周平，斉藤忍

電子情報通信学会　技術報告 KBSE2004 ( 48 ) 19-23 2005.03

Research paper (conference, symposium, etc.), Joint Work

生産ライン効率化のための累積流量図とガントチャートの活用

稲田周平，水町忠弘，橘秀範，田中俊作

IEレビュー Vol.45 ( No.5 ) 95-101 2004.12

Research paper (scientific journal), Joint Work, Accepted

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生産ラインの効率化を目的として，累積流量図とガントチャートを利用した生産スケジュールの立案方法を示し，累積流量図とガントチャートの新たな活用可能性を示している。

日本型ハイエンドEMSを目指して

稲田周平，松本俊之

IEレビュー Vol.45 ( No.4 ) 72-77 2004.10

Research paper (scientific journal), Joint Work

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日本における新たな生産ビジネスモデルの１つとして，セレスティカ・ジャパン社のEMS(Electronics Manufacturing Services)企業としての取り組みについて紹介したもの。

Performance of multitasking workers in KANBAN control production processes

石垣綾，稲田周平，平川保博

Proceedings of the 5th Int. Industrial Engineering Conf.    7 pages 2003.10

Research paper (conference, symposium, etc.), Joint Work, Accepted

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“かんばん”によって制御された多段階製造過程において，多能工を有効に活用するための多能工の移動ルールの提案と，その性能評価を数値シミュレーションを通して行っている。

多段階製造過程における外注部品の最適調達量の決定方法

稲田　周平

日本経営工学会論文誌 Vol.54 ( No.3 ) 185-193 2003.08

Research paper (scientific journal), Single Work, Accepted

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自社内の製造工程能力を考慮したもとで，外注からの経済的な部品調達量を決定するためのモデルとその解法を示したもの。

女性の力を積極活用した活力ある製造現場作り

稲田 周平

IEレビュー Vol.44 ( No.3 ) 59-64 2003.08

Research paper (scientific journal), Single Work

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生産企業が女性の期間労働力を効果的に活用する上で整備すべき組織上の仕組みと，その運営上の留意点について，企業（味の素パッケージング㈱）の事例をもとに紹介したもの。

地道な改善活動に根ざした海外展開

稲田　周平

IEレビュー Vol.42 ( No.4 ) 65-70 2001.10

Research paper (scientific journal), Single Work

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製造企業において，改善活動に基づく国内事業の生産力の強化が，海外への事業移転を成功させる上で重要な要因になることを，㈱トーキンのインタビュー事例を通して紹介している。

Economic make-or-buy decision when the sales price and sales volume decrease shortly after introduction to the market

稲田　周平

Proceedings of the 16th Int. Conf. on Production Research A ( 6.2 ) 15 pages 2001.08

Research paper (conference, symposium, etc.), Single Work, Accepted

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半導体製品に代表される製品の販売価格および販売量が市場導入直後から急速に下落する商品について，製品製造の経済的な内外製区分を決定する理論を示したもの。

独自の工夫を詰め込んだ工場改善

稲田 周平

IEレビュー Vol.41 ( No.3 ) 75-80 2000.08

Research paper (scientific journal), Single Work

A solution method for economic make-or-buy decision in the multistage manufacturing process

稲田　周平

Proceedings of the 4th 　Int. Conf. on Managing Innovative Manufacturing    356-363 2000.07

Research paper (conference, symposium, etc.), Single Work, Accepted

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設備投資に対する資金制約があるもとで，製造企業において経済的に有利となる内外製意思決定を，投資案の利益率指標を利用して行う方法を示したもの。

多段階製造過程における経済的な内外製区分の決定方法

稲田　周平

慶應義塾大学博士論文  2000.01

Single Work

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多段階製造過程を経て製造される製品について，経済的な製品製造の内外製区分を，生産量の分岐点指標を利用して決定するモデルおよびその解法をまとめたもの。

市場導入時から販売価格と販売量が減少するときの設備投資案の損益分岐線分析

稲田　周平

日本設備管理学会誌 Vol.11 ( No.2 ) 78-81 1999.10

Research paper (scientific journal), Single Work, Accepted

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市場導入時から製品の販売価格と販売量が不確実な中で減少するときに，製品製造のための設備投資案を損益分岐線を描くことにより有効に分析できることを示した論文。

内製化投資案の投資利益率指標および回収期間指標を用いた経済的な内外製区分の決定方法

稲田　周平

日本設備管理学会誌 Vol.11 ( No.1 ) 12-17 1999.06

Research paper (scientific journal), Single Work, Accepted

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多段階製造過程で内製化を1段階深めたときの投資案に着目することにより，生産量の分岐点指標に加えて投資利益率指標や回収期間指標を使って，経済的な内外製区分が検討できることを明らかにしている。

内外製区分問題における生産量の分岐点指標・投資利益率指標・回収期間指標の等価性

稲田　周平

日本設備管理学会平成11年度春季発表大会論文集    9-15 1999.06

Research paper (conference, symposium, etc.), Single Work

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経済的な内外製区分を決定する問題に関して等価に利用できる3つの指標を用い，製品の生産量，資金の調達資本コスト，市場での製品寿命が不確実な状況下における内外製の意思決定を助ける手法を提案している。

設備による内製の代案のある直列型多段階製造過程での経済的内外製区分の決定方法

稲田　周平

日本設備管理学会誌 Vol.10 ( No.4 ) 205-212 1999.03

Research paper (scientific journal), Single Work, Accepted

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直列の多段階製造過程において，コストの異なる設備の代案が各内製段階にあるときに生産量の分岐点指標を使って経済的に最も有利になる内外製区分が見出せることを示している。

多段階の製造過程における経済的な内外製の決定方法

稲田周平，中村善太郎

日本経営工学会論文誌 Vol.49 ( No.4 ) 197-208 1998.10

Research paper (scientific journal), Joint Work, Accepted

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多段階の製造過程における経済的な内外製区分を，2つの内外製区分方策の優劣が等しくなる生産量の分岐点を用いて見出す解法を示したもの。