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Hamamoto, M.,Kim, J.A.,Kwon, S.H.,Lee, S. K.,Jo, H.J. The Society of Naval Architects of Korea 1995 Journal of hydrospace technology Vol.1 No.1
For the mechanism of ship capsizing, we can generally consider that it\`s caused due to pure loss of stability, parametric oscillation(low cycle resonance) of ship in waves and the broaching phenomena. Among them, low cycle resonance occurs due to the dynamic change of righting arm with respect to the relative position of ship to waves. The dynamic change depends on the encounter period of a ship in following waves. This paper discusses the following items : (1) An analytical expression of GZ curve varying with respect to the relative position of ship to waves, (2) Non-linear equation of motion describing low cycle resonance, (3) The effects of righting arm, stability range and encounter period on low cycle resonance.
Hamamoto,M.,Kim,J.A.,Kwon,S.H.,Lee,S.K.,Jo,H.J. 韓國海洋大學校 附設 海洋科學技術硏究所 1997 硏究論文集 Vol.6 No.-
For the mechanism of ship capsizing, we can generally consider that it's caused due to pure loss of stability, parametric oscillation(low cycle resonance) of ship in waves and the broaching phenomena. Among them, low cycle resonance occurs due to the dynamic change of righting arm with respect to the relative position of ship to waves. The dynamic change depends on the encounter period of a ship in following waves. This paper discusses the following items: (1) An analytical expression of GZ curve varying with respect to the relative position of ship to waves, (2) Non-linear equation of motion describing low cycle resonance, (3) The effects of righting arm, stability range and encounter period on low cycle resonance.
H. Fujiwara,Y. Nakatani,H. Aratani,Y. Kanai-Nakata,K. Yamagami,S. Hamamoto,T. Kiss,A. Sekiyama,A. Tanaka,T. Ebihara,Y. Saitoh 한국물리학회 2023 새물리 Vol.73 No.12
We have performed the soft x-ray absorption spectroscopy (XAS) on the heavy fermion superconductor CeNi₂Ge₂ to examine the local 4f electronic structures. The XAS spectra are qualitatively explained by the ionic calculation, indicating the localized character of the 4f states, while the sizable cf-hybridization effects are also observed in the XAS spectra and those magnetic circular dichroism. In addition, the temperature dependence of linear dichroism (LD) in the XAS spectra indicates that the ground state symmetry is Γ<SUB>7</SUB>, and the excited states with Γ<SUB>6</SUB> symmetry is above 390 K.