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- 저자 : ( Kazuyuki Nagai ) (검색결과 2 건)
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( Kazuyuki Nagai ) 한국금융법학회 2011 金融法硏究 Vol.8 No.1
In Japan, the rules of insurance was established in the Commercial Code since 1899. After then, Japan has become one of the most industrialized countries in the world, and its population has been progressively growing older. So, this old rules of insurance was facing some new challenges in these years, for example, how to protect an insurant. In the past several years, Japan had been particularly involved with efforts at improving its insurance law. And Japan had to find some solutions for these new challenges, and to make some innovation. In 2008, the Insurance Act in Japan was enacted with to be more contemporary writings. The main purpose in this new insurance law is to be written in an easy style for the people who repeatedly ask their insurance law to be necessary and reasonable. And then, Japan launched its new insurance law in recognizing that it is a key in a modern safe society to protect an insurant. In this paper, I would like to focus two-important topics in this new insurance law, as follows, ① what is the intention of the new insurance law, ② how the new insurance law is to protect an insurant. These innovations in the new insurance law should and will be an example that other countries follow in the future.
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Seungwon Ha,Hiroki Nagai,Keisuke Asai,Kazuyuki Nakakita,Nobuyuki Tsuboi 한국항공우주학회 2008 한국항공우주학회 학술발표회 논문집 Vol.- No.-
A blunt body in hypersonic flow is subjected to severe aerodynamic heating and drag. This is one of the most critical problems of designing the hypersonic vehicles such as Reusable Launch Vehicles (RLV). It is well known that spiked-nose (aerospike) concept is effective for aerodynamic drag reduction on asymmetric blunt bodies in hypersonic flow. In this study, we investigated the heat flux distribution on a blunt-nosed body with an aerospike in hypersonic flow. The spike length and the angle of attack were changed to verify the heat reduction effect. The experiment was conducted at Mach l0in the JAXA 0.44-m Hypersonic Wind Tunnel and the temperature of body was measured by using Temperature-Sensitive Paint (TSP), which is a global temperature measurement technique based on photochemical reaction. In addition, the heat flux distribution calculated increase rate or temperature. The flow field around a blunt-nosed body is visualized by schlieren images and compared with TSP images and CFD results to discuss the heat flux distribution. It was found from the result that the heat flux amount is decreased as the length of spike longer and the heat flux distribution is changed widely with the angle of attack. In this study, moreover, the heat-flux and the flow field relation ware clarified by shock/shock interaction analysis of the flow field for different angle-of-attack.
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