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Toyota, Japan

Aichi Gakusen University is a private university with campuses in Okazaki, Aichi and Toyota, Aichi, Japan. The school was established in 1966 as a women's college. Later it became co-educational. Wikipedia.

Hanzawa F.,Nagoya University of Arts and Sciences | Nomura S.,Nagoya University of Arts and Sciences | Sakuma E.,Nagoya University of Arts and Sciences | Uchida T.,Nagoya University of Arts and Sciences | And 2 more authors.
Journal of Nutrition | Year: 2013

We have shown that intake of sesame seed and its lignan increases vitamin E concentrations and decreases urinary excretion levels of vitamin E metabolites in male Wistar rats, suggesting inhibition of vitamin E catabolism by sesame lignan. The aim of this study was to examine whether dietary sesame seed also increased vitamin K concentrations, because its metabolic pathway is similar to that of vitamin E. To test the effect of sesame lignan on vitamin K concentrations, male Wistar rats were fed a control diet or a diet with 0.2% sesamin (a sesame lignan) for 7 d in experiment 1. Liver phylloquinone (PK), menaquinone-4 (MK-4), and γ-tocopherol were greater in rats fed sesamin than in control rats. To test the effect of sesame seed on vitamin K concentrations, male Wistar rats were fed a control diet or a diet with 1, 5, or 10% sesame seed for 3 d in experiment 2. Liver and kidney PK and γ-tocopherol but not MK-4 were greater in rats fed sesame seed than in control rats, although differences in dietary amounts of sesame seed did not affect the PK concentrations. For further confirmation of the effect of sesame seed, male Wistar rats were fed a control diet or a diet with 20% sesame seed for 40 d in experiment 3. Kidney, heart, lung, testis, and brain PK and brain MK-4 were greater in rats fed sesame seed than in control rats. The present study revealed for the first time, to our knowledge, that dietary sesame seed and sesame lignan increase not only vitamin E but also vitamin K concentrations in rat tissues. © 2013 American Society for Nutrition.

Okada Y.,Meijo University | Yoshihisa K.,Meijo University | Tatsuda K.,Aichi Gakusen University
Acoustical Science and Technology | Year: 2016

Large variations occur in actual meteorological conditions according to the time and place, on which the atmospheric absorption of sound depends strongly. To examine the temporal variability of atmospheric sound absorption during the year, the attenuation coefficients for atmospheric absorption were calculated from meteorological data in various world regions. The hourly meteorological data at 10 international airports and the half-daily aerological data obtained at 3 observatories were used in the calculation. The results show that significant differences in atmospheric absorption with the place can be found. The seasonal changes in the attenuation coefficients depend on both the frequency of the sound and the place. In addition, the effects of atmospheric absorption on aircraft noise propagation were examined by performing simple simulated calculations. The A weighted sound pressure levels and sound spectra of aircraft noise change instantaneously owing to atmospheric absorption, which depends on actual meteorological conditions. ©2016 The Acoustical Society of Japan.

Imaizumi M.,Aichi Gakusen University | Kimura M.,Gifu City Womens College
Proceedings - 21st ISSAT International Conference on Reliability and Quality in Design | Year: 2015

As the Internet technology has developed, not only the information system but also the control system which controls various devices have become connected with the Internet. The operational efficiency of a control system is improved by being connected with the Internet. However, it increases the risk of cyber attacks. Meanwhile, in terms of the control system, the real-time property which guarantees response within strict time constraints is required. This paper considers the optimal policy of a control system connected with the network. The control system consists of N units. If cyber attack cannot be detected, the system becomes failure. If the N-th operating unit cannot finish one processing until a time limit T, a processing of system interrupts. The mean time to system failure or interruption is derived. Further, the optimal policy which minimizes the cost effectiveness is discussed. Finally, numerical examples are given.

Imaizumi M.,Aichi Gakusen University | Kimura M.,Gifu City Womens College
RQD 2014 - Proceedings - 20th ISSAT International Conference Reliability and Quality in Design | Year: 2014

Recently, the case that malware enters into an organization's LAN through e-mail and so on, has become a serious problem. It is important to detect the attacks and to address them as soon as possible, however it takes a lot of time and cost to monitor and analyze the log data. Therefore, in terms of monitoring, it is necessary to implement it under appropriate management policy. This paper considers optimal monitoring policies for a system with cyber attack. One is the model where the loss cost between attack occurrence and its detection increases with time linearly, the other is the model where it increases with time non-linearly. The expected cost until the detection of attack is derived. Further, optimal policies which minimize the expected cost are discussed. Finally, numerical examples are given.

Tatsuda K.,Aichi Gakusen University | Oishi Y.,Daido University
IEEJ Transactions on Electronics, Information and Systems | Year: 2016

Onomatopoeia is a powerful means to convey characteristics of sounds and also important for designing sounds. We conducted an experiment wherein 493 people, aged 7-8 1 years, and 376 kindergarteners, aged 3-6 years, were requested to imitate pure sounds of 62.5 Hz, 500 Hz, and 4 kHz with onomatopoeic voices. We analysed differences in trends of onomatopoeic expressions based on gender and age. Various onomatopoeic voices were produced by the subjects, many of which were those starting with consonants "P" or "B" followed by long vowels. There were significant gender differences in their starting consonants at 500 Hz and 4 kHz, whereas age differences were remarkable at 62.5 Hz and 500 Hz. A significant difference was observed in both gender and age at 500 Hz for long vowels. The onomatopoeic voices indicated by the kindergarteners had a lot of variations, among which their consonants in particular were found to be significantly different from that of adults at all frequencies. Noticeable gaps were found between three-year-old children and adults in vowels, but the gaps in vowels of the children became closer to those of adults as they aged. © 2016 The Institute of Electrical Engineers of Japan.

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