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좌굴방지 강재슬릿댐퍼로 보강된 기존 철근콘크리트 건축물의 내진보강효과
이복기 ( Lee Bok-gi ),정주성 ( Jung Ju-seong ),이종규 ( Lee Jong-gyu ),이강석 ( Lee Kang-seok ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
본 연구에서는 기존 철근콘크리트(이하 R/C) 건축물의 내진보강을 위한 새로운 좌굴방지 강재슬릿댐퍼(Non Buckling steel Slit Damper, 이하 NBSD) 내진보강공법을 제안하였다. 제진장치 부재실험, 2층 골조 유사동적실험을 통해 내진보강효과를 검증함과 동시에, 비선형동적해석을 이용하여 유사동적 실험결과와 비교하여 해석모델링의 타당성을 분석하였다. 구축된 비선형 동적해석 모델 및 방법을 기반으로 비내진상세를 가지는 중·저층 R/C 건축물을 대상으로 비선형동적해석을 실시하였으며, 내진보강 전과 후의 건축물의 지진응답하중 및 응답변위 특성을 검토하여 내진보강효과를 검증하였다.
분산 웹 클러스터 시스템에서의 효율적인 부하 균등 기법에 관한 연구
이복기(Bog-Ki Lee) 한국컴퓨터정보학회 2011 韓國컴퓨터情報學會論文誌 Vol.16 No.8
웹 사용자의 급증은 과중한 전송량과 시스템의 부하문제를 야기 시켰으며 이를 해결하기 위한 방안으로 클러스터시스템이 연구되고 있다. 기존 웹 클러스터 시스템에서는 웹 서버 간 부하가 균등하더라도 멀티미디어나CGI 등으로 요청 데이터 크기가 크면 특정 웹 서버의 부하와 응답 시간이 증가되는 경향이 있다. 본 논문에서는 웹 클러스터 시스템의 효율적인 자원사용 방법에 관하여 연구하였다. 메모리 사용을 균형적으로 하는 웹 클러스터 시스템을 구현하기 위한 부하 분산 알고리즘을 제안하여 검토하고 다양한 클러스터링 모델에서 반응시간을 성능 측정의 지수로 제시하였다. 또한 웹 클러스터 시스템의 동시사용자 수를 기반으로 반응시간은 사용자 수를 증가시키면서 실험하였으며, 성능 실험을 통해 기존의 방식보다 제안한 기법이 처리율과 응답시간에서 보다 향상된 것으로 나타났다. The increasing of web users load to the excessive transmission traffic and system overload problems. To solve these problems, cluster systems are studied. In conventional cluster systems, when the request size is large owing to such types as multimedia and CGI, the particular server load and response time tend to increase even if the overall loads are distributed evenly. In this paper, we consider the methodology of efficient resource usage, specially distributed web cluster system. We develope an algorithm that distributes the load on the web cluster system to use the system resources, such as system memory equally. The response time is chosen as a performance measure on the various clustering models. And based on the concurrent user to the web cluster system, the response time is also examined as the number of users increases. Simulation experience with this algorithm shows that the response time and average throughput seems to have a good results compare to those with the other algorithm.
이복기 ( Bok Ki Lee ) 한국현대영미소설학회 2014 현대영미소설 Vol.21 No.2
Unlike his earlier two novels which have Japan as their backgrounds, Kazuo Ishiguro adopts the genre of ‘the novel of manners,’ which is considered probably the most representative English form of novel, for his third work, The Remains of the Day. Traditionally, a novel of manners uses ‘a reliable narrator’ to establish the authority of the narrative in order to deliver the new values and socio-political ideas to the readers. However, Ishiguro describes his narrator, Stevens the butler of Darlington Hall, as ‘an unreliable narrator’ and achieves the aim of letting the readers think that the values and socio-political ideas delivered by the narrator are dubious and on “the mystical foundation of authority.” As a result, the readers of his novel would keep themselves from empathizing with the narrator`s story and attempt to find the errors and lies in his narrative. In this way Ishiguro deconstructs the most representative genre of English novel and encourages the readers to question the values and socio-political ideas addressed in the novel of manners. The values and socio-political ideas the novel deconstructs can be summed up as “the notion of benevolent paternalism” as Susie O`Brien puts. In the novel, Lord Darlington acts as the benevolent and authoritative father whom Stevens obeys and entrusts all of his own rights of decision to. With this hierarchical system the world of Darlington Hall, representing the past England and even the contemporary England, is believed to keep the stability and to attribute to “the progress of humanity” by Stevens. In order to justify his belief, Stevens argues that he served his employer of greatness with dignity. To identify himself as a man of dignity Stevens addresses how he wholeheartedly inhabit his profession, but through his narrative the fact that he was ignorant of the importance of those he inhibited is revealed. Also, the foundation of the system, Lord Darlington`s authority, is challenged and turned out to be on “the mystical foundation.” In this way, Ishiguro dramatizes the process of the deconstruction of “a particular myth about a certain kind of mythical England” in The Remains of the Day.
이복기 ( Bok Ki Lee ) 한국근대영미소설학회 2012 근대 영미소설 Vol.19 No.1
This paper attempts to approach Thomas Hardy`s Tess of the D`Urbervilles from a different angle. Previous discussions of the novel have focused on deterministic view of the heroine`s tragic life and on proving Tess`s purity. They have kept the heroine on the center of the discussion and attempted to find the causes of the tragedy or to defend her purity. However, in this paper Angel Claire takes the center of the discussion. It is necessary to reconstruct the narrative around Angel`s project of ``new beginning`` to rescue the novel from deterministic fetter. Disappointed at degeneration of his family and society, Angel set a strategy to start reviving them by making a new start in a country with a pure girl. Tess was the right person for this purpose until he was told Tess`s story about Alec. From his response to her confession, we can find the limit of his conception of purity: it is confined within physical virginity. Even if he tried to set himself off of the tradition and convention, he was still harnessed by them. On the other hand, Tess is represented as a person who practiced becoming-nature and becoming-animal. In her experiences of becoming, we can recognize the germinality of being and the nature in the novel. Therefore, to read the novel as being dominated with deterministic view of the world and being can be a longstanding misunderstanding. This reading can cast off the yoke of determinism put on the novel and bring back the life force it originally contained.