Preparing for Large Natural Catastrophes: The current state and challenges of earthquake insurance in Japan

Global incidents of major natural catastrophes are becoming increasingly common in recent years. Seismological research has shown earthquake-prone Japan to be at particular risk from not only inland earthquakes, but also from repeat incidents of major earthquakes such as the Tokai, Tonankai, and Nankai earthquakes. In such an eventuality, earthquake insurance is expected to play a part in ex-post recovery efforts from the damage caused by these earthquakes, with the Japanese government developing special support programs. The previously low penetration rate of earthquake insurance in Japan, however, meant that it did not play a significant role in recovery efforts following the 1995 Great Hanshin-Awaji Earthquake. Despite recent progress in improving the system and an increasing awareness of the risks from earthquakes, the penetration rate of earthquake insurance in Japan remains at approximately 20%. In this study we discuss the current state and issues of earthquake insurance in Japan.Earthquake Insurance; natural catastrophes; Hanshin-Awaji Earthquake

Solubility of Mixed Lanthanide Hydroxide and Oxide Solid Solutions

The solubilities of different multicomponent lanthanide oxide (Ln₂O₃) solid solutions including binary (Ln₁ and Ln₂ = La, Nd, Eu, or Tm), ternary (Ln₁, Ln₂, and Ln₃ = La, Nd, Eu, or Tm), and higher systems (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) were studied after aging for four weeks at 60°C. Our recent study revealed that the phase transformations in binary ((La, Nd) and (La, Eu)) and ternary (La, Nd, Eu) systems are responsible for the formation of (La, Nd)(OH)₃, (La, Eu)(OH)₃, and (La, Nd, Eu)(OH)₃ solid solutions, respectively. The variations in the mole fractions of La³⁺, Nd³⁺, and Eu³⁺ in the sample solutions of these hydroxide solid solutions indicated that a thermodynamic equilibrium might account for the apparent La, Nd, and Eu solubilities. Conversely, the binary and ternary systems containing Tm₂O₃ as the heavy lanthanide oxide retained the oxide-based solid solutions, and their solubility behaviors were dominated by their congruent dissolutions. In the higher multicomponent system, the X-ray diffraction patterns of the solid phases, before and after contact with the aqueous phase indicated the formation of a stable oxide solid solution and their solubility behavior was explained by its congruent dissolution

Preparing for Large Natural Catastrophes: The current state and challenges of earthquake insurance in Japan

Global incidents of major natural catastrophes are becoming increasingly common in recent years. Seismological research has shown earthquake-prone Japan to be at particular risk from not only inland earthquakes, but also from repeat incidents of major earthquakes such as the Tokai, Tonankai, and Nankai earthquakes. In such an eventuality, earthquake insurance is expected to play a part in ex-post recovery efforts from the damage caused by these earthquakes, with the Japanese government developing special support programs. The previously low penetration rate of earthquake insurance in Japan, however, meant that it did not play a significant role in recovery efforts following the 1995 Great Hanshin-Awaji Earthquake. Despite recent progress in improving the system and an increasing awareness of the risks from earthquakes, the penetration rate of earthquake insurance in Japan remains at approximately 20%. In this study we discuss the current state and issues of earthquake insurance in Japan

Morphology and formation mechanism of metallic inclusions in VB-grown sapphire crystals

Morphologies of metallic inclusions observed in sapphire crystals grown by the vertical Bridgman (VB) technique using a tungsten (W) crucible were investigated. Square- or hexagonal-shaped inclusions 2-5 mu m in size were observed in sapphire crystals around the interface between the seed and the grown crystal. It was found that such inclusions consisted of W metal used for the crucible. The morphology of some of the inclusions reflects a rhombic dodecahedron which is based on the cubic structure of W and is surrounded by {110} faces. It is probable that inclusions form in the sapphire melt during the crystal growth process, and then sink in the melt to the growth interface due to the high density of W. (C) 2013 Elsevier B.V. All rights reserved.JOURNAL OF CRYSTAL GROWTH. 401:388-391 (2014)journal articl

Vertical Bridgman growth of sapphire crystals, with thin-neck formation process

A new technique is proposed in the traditional vertical Bridgman growth of sapphire crystals, in which thin-neck formation follows the initial seeding. Low-angle grain boundaries generated at the periphery of the seeding interface were eliminated at the thin neck, and the c-axis sapphire crystals with main bodies free from low-angle grain boundaries were grown.ArticleJOURNAL OF CRYSTAL GROWTH. 401:146-149 (2014)journal articl

The syntactic and semantic principles of the argument realization of German deverbal nominalizations : focusing on the contribution of nominal arguments to referent identification

PDF/A形式により利用可能アクセス:WWWによる東京外国語大学大学院総合国際学研究科博士 (学術) 論文 (2020年9月)博甲第300号その他のタイトルは英文要旨による参考文献: p323-331東京外国語大学 (Tokyo University of Foreign Studies)博士 (学術