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2025.11.18
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[Graduate School of Science and Engineering] Takanori Ishimaru wins the Best Student Paper Award at the International Conference on Materials Science and Engineering (APMS) 2025
At "APMS 2025," held in Kamakura from August 31 (Sun) to September 4 (Thu), 2025, Takanori Ishimaru (2nd year Master's student, Management Technology Course, Graduate School Graduate School of Science and Engineering, Mizuyama Laboratory) received the "Best Student Paper Award."
At APMS 2025, awards are presented to students who have published research in the Springer Series "Advances in Information and Communication Technology" that demonstrates originality and influential academic contributions, as well as to students who have given outstanding research presentations.
[Paper Title]
Impact of Transshipment Prices on Food Waste in a Two-Location Restaurant Inventory System
【补耻迟丑辞谤】
T. Ishimaru, S. Suginouchi, and H. Mizuyama
[Journals in which it was published]
IFIP Advances in Information and Communication Technology, Vol.767, Springer, pp.273-286 (2025)
Research overview
This study examines the effects of transferring inventory between two restaurants. Moving surplus inventory from one restaurant to another may lead to increased profits and reduced food waste. While previous studies have primarily analyzed the impact of transferring inventory on profits, this study focuses on the food waste reduction effect of transferring inventory.
This research has two main contributions.
Firstly, this study revealed how each store's decision-making regarding initial inventory levels changes depending on the price per unit (flexible price) paid by the recipient of the horizontal delivery to the supplier. Since the flexible price influences each store's decision-making regarding initial inventory, it became clear that adjusting this value appropriately can enhance the effect of reducing food waste.
Secondly, this study demonstrated that a decentralized system can reduce food waste more effectively than a centralized system. In a centralized system, a central decision-maker manages multiple stores in a unified manner with the aim of maximizing overall profits, whereas in a decentralized system, each store makes independent decisions with the sole objective of maximizing its own profits. While many previous studies have pointed out that in a decentralized system, the self-serving actions of each store can harm overall profits, interestingly, this study showed that, in the case of food waste, the self-serving actions of each store may actually reduce it.
At the awards ceremony (Takanori Ishimaru is in the center) Comments from the award winners
Takanori Ishimaru (2nd year Master's student Graduate School of Science and Engineering, affiliated with Mizuyama Laboratory)
I am deeply honored to receive the "Best Student Paper Award." I would like to express my sincere gratitude to Professor Mizuyama and Assistant Professor Suginochi for their guidance despite their busy schedules. I would also like to thank my seniors and peers who have been involved in my research and given me valuable opinions. Encouraged by this award, I will continue to dedicate myself to my research and strive to achieve even greater results in the future.
At the awards ceremony (Takanori Ishimaru is in the center) Comments from the supervisor
Professor Mizuyama (Department Department of Industraial and Engineering, Faculty of College of Science and Engineering and Engineering)
This award recognizes the research achievements led by Ms. Ishimaru as part of our laboratory's research project on improving the sustainability of food supply chains. Reducing food waste is a socially important issue, and Ms. Ishimaru's research offers a new perspective toward solving it. We hope that this award will encourage Ms. Ishimaru to produce even greater research results in the future.