Relaxation of Tightening Force in Joint with FRP Bolt and Nut : Analysis in consideration of stress-dependency of constitutive equation

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『日本語話し言葉コーパス』における単位認定基準について

国立国語研究所国立国語研究所国立国語研究所埼玉大学大学院国立国語研究所『日本語話し言葉コーパス』では,形態論的な単位として,品詞の分布などの計量研究によって資料の特徴を明らかにするための長単位と,用例を採集し,話し言葉の語彙・語法の研究を行うための短単位の2種類の単位を採用した。本稿では,この2種類の単位の設計方針及び認定基準の概略について述べることとする

Development of the acoustic positioning system using MEMS microphone

Marine resource survey by an underwater vehicle is expected. To realize cheap self-positioning for the underwater vehicle, we have been developing on the acoustic positioning system which is low cost and easy to maintain. The acoustic positioning system has four hydrophones which consists of molding commercially available MEMS micro phones with pressure-resistant resin, an audio device, and a micro controller. To evaluate the system, positioning experiments was performed in the small tank. In the experiments, the system detected delay time among four hydrophones, however its positioning was not good accuracy. In the future, we will improve the accuracy of positioning by interpolating data and considering the effect of baseline.ロボティクス・メカトロニクス講演会2021 (ROBOMECH2021), 2021年6月6日～8日, 大阪 (オンライン開催