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Ryo Matsuoka, Koichi Kobayashi and Yuh Yamashita
A pickup and delivery problem by multiple agents has many applications, such as food delivery service and disaster rescue. In this problem, there are cases where fuels must be considered (e.g., the case of using drones as agents). In addition, there are ...
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Tetsuya Endo, Osamu Kimura, Masaru Terasaki, Yoshihisa Kato, Yukiko Fujii and Koichi Haraguchi
The changes in the stable isotope ratios of carbon (d13C), nitrogen (d15N), oxygen (d18O), and mercury (Hg) concentrations in muscle and liver tissues during and after lactation were studied in killer whales stranded along the coast of Hokkaido, in the n...
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Andrew Vargo, Kohei Yamaguchi, Motoi Iwata and Koichi Kise
Vocabulary acquisition and retention is an essential part of learning a foreign language and many learners use flashcard applications to repetitively increase vocabulary retention. However, it can be difficult for learners to remember new words and phras...
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Andrew Vargo, Benjamin Tag, Chris Blakely and Koichi Kise
Online knowledge-based peer-production communities, like question and answer sites (Q&A), often rely on gamification, e.g., through reputation points, to incentivize users to contribute frequently and effectively. These gamification techniques are im...
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Bin Zeng, Yuzhou Wang, Fuyuan Gong and Koichi Maekawa
Concrete cracking is the significant stage of RC structural deterioration induced by steel corrosion. To predict the corrosion-induced cracking of the loaded RC structure, a multi-scale model is proposed. The formation and transport of corrosion products...
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Koichi Kobayashi and Wataru Koyanagi
This study was conducted on concrete using sewage sludge ash (SSA) with the aim to establish an efficient use of SSA as a cement replacement material. Concrete specimens with three degrees of strength were made from two different SSAs and exposed in temp...
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Lei Tan, Tomoki Ikoma, Yasuhiro Aida and Koichi Masuda
Barge-type platforms with moonpools are a promising type of foundation for floating offshore wind turbines due to their good seakeeping performance. In this paper, the mean wave drift force on a barge-type vertical-axis floating wind turbine with multipl...
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Gregory Hallewell, John Dingley, Martin Doubek, Robin Feuillassier, Sergey Katunin, Koichi Nagai, David Robinson, Alexandre Rozanov, David Williams and Vaclav Vacek
We have developed ultrasonic instrumentation for simultaneous flow and composition measurement in a variety of gas mixtures. Flow and composition are respectively derived from measurements of the difference and average of sound transit times in opposite ...
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Shinichi Yamagiwa, Eisaku Hayakawa and Koichi Marumo
Toward strong demand for very high-speed I/O for processors, physical performance growth of hardware I/O speed was drastically increased in this decade. However, the recent Big Data applications still demand the larger I/O bandwidth and the lower latency...
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Thu Lan Nguyen, Ichiro Yamada, Takashi Yano, Koichi Makino and Masaharu Ohya
Many decibel-based noise indicators are used in noise policy to evaluate aircraft sound in the environment. Among those, day?evening?night-weighted sound pressure level (Lden" role="presentation" style="position: relative;">??denLden
L
den
), day?night-w...
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