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Featured researches published by Yuji Hayashi.


The Journal of Japan Institute of Navigation | 2014

Evaluation on Elements of Tug Boat Handling during Ships' Berthing and Unberthing

Ayumi Ishikura; Junichi Sakashita; Yuji Hayashi; Koji Murai

The most important task of harbor tug boats are to support berthing /unberthing of vessels, because marine pilots use those tug boats for safe and efficient ship operation when assisting vessels’ berthing or unberthing. In Japan, the new pilotage low has been active since 2007 and included the third grade pilots which newly established. Unfortunately, they do not have enough experience of tug boat management. They are trying to study about tug boats handling in the harbor for large vessels using ship handling by navigation simulation systems. The senior pilots teach them how to use the tug boats in the ship handling simulator, too. However, the senior pilots have only the experience but do not have standard of the evaluation for management of tug boats handling. In this paper, the authors propose how to evaluate the tug boat handling for ship berthing using the new standard, which is named “Evaluation on elements for tug boat handling.” It is extracted from natural images of ship berthing at actual port named Yokohama. The new standards are consisted of three elements which are propelling power of tug boats, its direction and duration of power. The authors tried to compare the values of the three elements between actual ship handlings and ship handlings by the simulation, then confirmed their effects.


Review of the Faculty of Maritime Sciences, Kobe University | 2006

Basic Evaluation of Performance of Bridge Resource Teams Involved in On-Board Smart Education : Lookout Pattern

Koji Murai; Yuji Hayashi; Laurie C. Stone; Seiji Inokuchi


The Journal of Japan Institute of Navigation | 2007

Quantitative Evaluation of Ship Navigator's Mental Workload by Means of Facial Temperature

Yuji Hayashi; Takashi Takehara; Koji Murai; Yoshiji Yano


Interactive Technology and Smart Education | 2009

Enhancing Maritime Education and Training: Measuring a Ship Navigator's Stress Based on Salivary Amylase Activity.

Koji Murai; Shin-ichi Wakida; Takashi Miyado; Keiichi Fukushi; Yuji Hayashi; Laurie C. Stone


The Journal of Japan Institute of Navigation | 2009

Occurrence Tendency of Marine Pilots' Personal Accidents on Board

Yuji Hayashi; Kuniomi Fujisawa; Koji Murai


The Journal of Japan Institute of Navigation | 2009

Evaluation of A Navigator’s Mental Workload Based on Salivary Amylase Activity

Koji Murai; Shin-ichi Wakida; Takashi Miyado; Yuji Hayashi


The Journal of Japan Institute of Navigation | 2012

Evaluation of Mental Workload of Bridge Teammates Using Facial Temperature : Simultaneous Measurement of Navigator and Helmsman

Harunobu Kenjo; Koji Murai; Yuji Hayashi; Nobuo Mitomo


The Journal of Japan Institute of Navigation | 2012

Fundamental Study on Situation Awareness for Training by a Ship Maneuvering Simulator

Kazuki Inoue; Tadatsugi Okazaki; Koji Murai; Yuji Hayashi


The Journal of Japan Institute of Navigation | 2002

On the Relationship between Horizontal Angle of Visual Field and it's Reality by Ship Handling Simulator : Measurement of Subjects' Center of Gravity and Nasal Temperature

Koji Murai; Yuji Hayashi; Yuko Sei; Seiji Inokuchi


The Journal of Japan Institute of Navigation | 2013

Evaluation of Difficulty of Ship Handling in Case of Entering Port at Port of Hanshin

Tomohiro Hori; Toshihiro Inoue; Yuji Hayashi; Koji Murai

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Nobukazu Wakabayashi

University of Electro-Communications

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Takashi Miyado

National Institute of Advanced Industrial Science and Technology

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Shin-ichi Wakida

Industrial Research Institute

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Kazuki Inoue

Tokyo University of Marine Science and Technology

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