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The High-Precision Measuring Method for Motorcycle Trajectory Using GPS
Yuichiro Koyama,Yuichiro Koyamaand 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
The method for measuring a motorcycle trajectory using GPS is needed to make a simulation of motorcycle dynamics. In GPS measure ment of a motorcycle, both declination of the body and obstacles near the course exert a bad influence. Therefore, we propose a new algorithm for GPS measurement of a motorcycle trajectory. We interpolate the missing observation data with in a few seconds using curve of the second order, and use Kalman filter in positioning calculation. In the result, we succeeded in getting the trajectory with high accuracy, which is sufficiently continuous. The precision is equal to that of fixed point positioning given sufficient number of available satellites.
Yuichiro Koizumi,Noriaki MIYAKE,Huimin Lu,Hyoungseop Kim,Seiichi MURAKAMI,Takatoshi AOKI,Shoji KIDO 제어로봇시스템학회 2018 제어로봇시스템학회 국제학술대회 논문집 Vol.2018 No.10
In recent years, the proportion of deaths from cancer tends to increase in Japan, especially the number of deaths from lung cancer is increasing. CT device is effective for early detection of lung cancer. However, there is concern that an increase in burden on doctors will be caused by high performance of CT improving. Therefore, by presenting the “second opinion” by the CAD system, it reduces the burden on the doctor. In this paper, we develop a CAD system for automatic detection of lesion candidate regions such as lung nodules or ground glass opacity (GGO) from 3D CT images. Our proposed method consists of three steps. In the first step, lesion candidate regions are extracted using temporal subtraction technique. In the second step, the image is reconstructed by sparse coding for the extracted region. In the final step, 3D Convolutional Neural Network (3D-CNN) identification using reconstructed images is performed. We applied our method to 51 cases and True Positive rate (TP) of 79.81 % and False Positive rate (FP) of 37.65 % are obtained.
Yuichiro Watanabe,Mari Takizawa,Akiko Goto 한국분자세포생물학회 2005 Molecules and cells Vol.19 No.2
Recent characterization of several genes involved in plant defense responses suggested that ubiquitinmediated protein degradation has a role in these responses. We isolated two cDNAs (NtUBA1 and NtUBA2) encoding ubiquitin-activating enzyme (E1) from Nicotiana tabacum cv. BY-2. The open reading frames of both encoded 1080 amino acids, corresponding to molecular masses of 120 kDa. The E1s and corresponding transcripts were upregulated by infection with tobacco mosaic virus (TMV) and tomato mosaic virus (ToMV), and to a lesser extent by cucumber mosaic virus (CMV). Furthermore, they were also upregulated by wounding stress, and the plant hormones salicylic acid, jasmonic acid and the ethylene precursor, aminocyclopropane-1- carboxylic acid (ACC). Our findings support the idea that the ubiquitin-proteasome system plays a role in plant disease defenses.
Development and Installation of Flap-gate Type Seawall Against Tsunami and Storm Surge
Yuichiro Kimura,Toru Itagaki,Kyoichi Nakayasu 한국연안방재학회 2017 한국연안방재학회 학술발표대회 논문집 Vol.2017 No.-
A flap-gate type movable seawall, which usually lies down on the ground, rises up automatically by buoyancy during inundation by tsunamis or storm surges, and then it forms a continuous seawall. This structure keeps lying in usual time to secure traffic and landscape. In emergence time, it protects a target area against inundation without power machineries and human operation. This structure is named as NEORISE which means No Energy and no Operation RIsing SEawall. The 2011 Tohoku Earthquake gave damages to power machineries and communication systems of tsunami-barrier gates and these tsunamis caused many casualties who tried to operate and close these gates. Structures for tsunami protection are required so as to avoid machinery failure and risk of operators. The NEORISE satisfies both of these requirements. In Japan 78 systems have been already constructed and this technology will contribute toward preventing and mitigating flood disaster.