Results 81 to 90 of about 51,025 (268)
Earthquake Risk and Earthquake Insurance
地震リスクには,他のリスクと比較してさまざまな特性があり,そのために保険困難な要素が多い。これを克服するために,空間的リスクに加えて,時間的リスクを大幅に取り込むことで,リスク分散を実現しようとする。しかしこれは,保険原理の観点からは,重大な問題を含んでいる。そこで,本稿では,非常に特異な性質を有する地震保険について,保険原理に照らしながら,構造的特徴ならびに限界について考察しながら,官民役割分担のあり方について論じる。とりわけ,地震保険に見られる逆選択現象の本質を捉えつつ,その対処策として採用されている地域別料率について,過度の採用は水平的不公平を増大させる恐れがあることから,むしろ,耐震構造に対するウェイトを高めた料率設定を行うことが,契約者間の公平性に照らして望ましいことを主張する。
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Creep properties and constitutive model of diabase in deep water conveyance tunnels
The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao +5 more
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The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu +4 more
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The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
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Progress in mantle anisotropy research based on XKS phases
XKS shear-wave splitting has been widely applied to investigations of anisotropy in both the upper mantle and the lowermost mantle D" layer, and represents a key tool for probing mantle deformation and dynamics.
Junshu Wang +4 more
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Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao +5 more
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Hydrogeochemistry of 32 hot springs in the western Sichuan Province after the Wenchuan MS 8.0 earthquake was investigated by analyzing the concentrations of cation and anion and the isotopic compositions of hydrogen and oxygen.
Zhi Chen +7 more
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Fluid flow through a single fracture is commonly described by the cubic law. However, deviations from this model are expected because natural fracture surfaces are rough and in contact with each other in discrete regions. In this study, the interactions between fracture closure, contact area, and hydraulic characterization of mesoscopic‐scale rough ...
Chenghao Han +5 more
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EARTHQUAKE, CAUSES OF EARTHQUAKE
In this article, general information about earthquakes, their types, classification. Earthquake conditions above and below the ground are classified. The article is intended for the requirements of labor protection and technical safety directions, labor protection and safety specialists, and general readers.
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“Earthquakes and Buildings” [PDF]
PROF. JOHN MILNE, of Tokio, refers in an article under this heading (NATURE, vol. xxix. p. 290) to buildings in Caracas, which are low, slightly pyramidal, have flat roofs, and are bound along their faces with iron. Being for more than twenty years a resident of this city, I hope I may be credited with knowing something of its architecture, and as such
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