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리브로 보강된 강관접합부의 실용설계법에 관한 해석적 연구
이영정,김갑순,김강식,김우범,정수영 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.2
In current design, the strength formula for a Gusset-Tube connections stiffened with rib-plate is proposed only in the limited case. And then it is almost impossible to evaluate the ultimate strength theoretically because of its complexity of the behavior. So in this study, finite element analysis were performed to investigate the ultimate strength of a Gusset-Tube connections stiffened with rib-plate. In previous study, it was examined that lateral load is replace by equivalent moment(M_ω) of tube-wall and normal component(P_υ) of the load. Therefore strength formulas of M_ω, and P_υ were proposed considering gusset length, tube thickness, diameter and stiffened length. And interrelations of each force(P, P_υ and M_ω) were drawn from the parametric study based on finite element method.
경성 경구강 내시경을 이용한 게실 절개술 후 재발로 개방 게실 절제술을 시행한 젠커게실 1예
이영정,박기남,이정현,정준영 대한이비인후과학회 2022 대한이비인후과학회지 두경부외과학 Vol.65 No.12
The traditional approach to diagnosis and management of Zenker’s diverticulum is open surgicaltreatment. More recently, however, endoscopic technique is also frequently used for Zenker’sdiverticulum because it has advantages of shortening operation time, postoperativehospitalization and reducing the complication such as recurrent laryngeal nerve injury. A75-year-old male, who was diagnosed with Zenker’s diverticulum, underwent a secondaryopen diverticulectomy after failed attempt at rigid transoral endoscopic diverticulotomy. Herewe report this case with a review of literature.
판과 쉘의 선형탄성해석에서 저차고체요소의 성능 비교연구
이영정,이상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
The purpose of this study is to investigate the performance of lower order solid finite elements in the elastic analysis of plate and shell structures. The 8-node solid finite elements are formulated with three different ways such as the use of standard strain-displacement relationship, B-bar method and enhanced assumed strain method. The convergence of solid elements is investigated by using comprehensive three obstacle shell finite element analysis benchmark tests. From numerical results, the solid finite element with enhanced assumed strain method exhibit a better performance than other two solid finite elements. Finally, we propose the present numerical results as a benchmark test suite for future solid finite element development.
永井和之 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.
李相玩,河正鎭,李永正 東亞大學校 大學院 1984 大學院論文集 Vol.8 No.2
The aim of this study is to remove non-productive and increase the operating time in plant which is very expensive and go into decay fastly. And expecially, it applies to the continuous process. As a result, it is seen that the initial failure of spare parts happen around 150 days and the chance failure around 240 days. Besides, by preventing the operator error which is, as follows; 1. handling and the capacity of the number of repairing persons 2. handling and repairing order 3. theadaptability of handling (Human Engineering) 4. the influence of repair it is believed that the safety and the use effectiveness of plant will be increased. Especially, it is though that because this study is possible to apply to all spare parts and kinds of mchinery, it is used more widely.