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( Yohei Ito ) 고려대학교 법학연구원 2019 The Asian Business Lawyer Vol.24 No.-
This article provides overview of the recent Law Reform on the Commercial Code and the Civil Code of Japan, specifically on the revision of extinctive prescription for collision claims and validity of the Time Extension Agreement for various maritime claims.
Event Estimation for Broadcast Soccer Video Using Decision Tree
Yohei Okamoto,Masao Izumi 한국멀티미디어학회 2009 한국멀티미디어학회 국제학술대회 Vol.2009 No.-
Recently we can save many video frames with high-capacity memory device. But it takes so long time to search scenes which satisfy the demands of users. Therefore, automatic searching of desired scenes is important. To construct such a system, we should analyze video structure and then we can index video based on it. In this paper, we propose new event estimation method for broadcast soccer video using decision tree which is constructed by several features focused on the shots of Break zone. From result of the experiment, our proposed method was proved effective.
Yohei Saika,Shouta Akiyama,Hiroki Sakaematsu 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
We investigated the Bayesian inferences using the maximize a posteriori (MAP) estimation for the problem of phase unwrapping in remote sensing using the synthetic aperture radar (SAR) interferometry. Then, in order to clarify performance of the Bayesian inference estimate, we carried out Monte Carlo simulation for a set of wave-fronts generated by an assumed true prior. Then, we clarified that optimal performance was achieved under the Bayes-optimal condition within statistical uncertainty. Then, we clarified that the present method was effective even for an artificial wave-front in remote sensing due to SAR interferometry. Also, we found that the Bayesian inference via the conjugate gradient method to derive the MAP solution for this problem. Using the numerical simulation for the wave-front, we found that the MAP estimation using the conjugate gradient method was effective for phase unwrapping as well as the MPM estimate approximately.
Yohei Honkura,Masahito Yamamoto,José, Francisco Rodrí,guez-Vá,zquez,Gen Murakam,Hiroshi Abe,Shin-ichi Abe,Yukio Katori 대한해부학회 2021 Anatomy & Cell Biology Vol.54 No.2
The bony carotid canal is a tube-like bone with a rough surface in contrast to smooth surfaces of the other parts of the temporal bone petrosal portion (petrosa): it takes an impression of the additional, out-sourcing product. No study had been conducted to evaluate a contribution of the adjacent sphenoid and pharyngotympanic tube (PTT) to the carotid canal. We examined sagittal and horizontal histological sections of hemi-heads from 37 human fetuses at 10 to 37 weeks. At 10 to 18 weeks, the future carotid canal was identified as a wide loose space between the cartilaginous cochlea and the ossified or cartilaginous sphenoid elements (ala temporalis and pterygoid). A linear mesenchymal condensation extending between the cochlear wall and ala temporalis suggested the future antero-inferior margin of the carotid canal. This delineation was more clearly identified in later stages. After 25 weeks, 1) the growing pterygoid pushed the PTT upward and, in turn, the PTT pushed the internal carotid artery (ICA) upward toward the petrosa: 2) a membranous ossification occurs in the dense mesenchymal tissue, the latter of which took an appearance of an anterior process of the petrosa; 3) the bony process of the petrosa involved the ICA inside or posteriorly. The bony carotid canal was made with membranous ossification in the dense mesenchymal tissue between the petrosa and sphenoid. The mother tissue was detached from the sphenoid by the PTT. The ossification of the septum between the ICA and tympanic cavity seemed to continue after birth.