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김경아,김종권,박재윤,Kim, Gyeong-A,Kim, Jong-Gwon,Park, Jae-Yun 한국정보처리학회 2002 정보처리학회논문지 C : 정보통신,정보보안 Vol.9 No.1
핸드오프는 무선 데이터 네트웍에서 TCP 성능을 저하시키는 가장 중요한 요인중 하나이다. 본 논문에서 패킷의 유신과, 중복이 없는 핸드오프 방법인 LPM(Last Packet Marking)을 제시한다. LPM은 Cellular IP 세미소프트 핸드오프를 개선한 방법으로 이동호스트에게 안전한 핸드오프 시점 알려준다. 새고 소개한 제어 패킷은 SPM(Semisoft reply Message) 하나이다. 컴퓨터 시뮬레이션을 통한 실험에서 LPM 방법은 패킷의 중복이나 유신이 없어서 TCP의 성능을 상당히 향상시켰다. Handoff is one of the most important factors that ma? degrade the performance of TCP connections in wireless data networks. In this paper, we present a lossless and duplication free handoff scheme called LPM (Last Packet Marking) for improving Cellular If semisoft handoff. LPM signals the safe handoff cue by sending a specially marked packet to mobile hosts. SPM (Semisoft rePly Message) is the only newly introduced control packet. Our performance study shows that LPM achieves lossless packet delivery without duplication and increases TCP throughput significantly.
췌장에 발생한 골수외 형질세포종의 영상소견: 증례 보고
김경아,박철민,최재웅,설혜영,Kim, Gyeong-A,Park, Cheol-Min,Choe, Jae-Ung,Seol, Hye-Yeong 대한영상의학회 2003 대한영상의학회지 Vol.49 No.4
골수외 형질세포종은 골수이외의 전신장기 어디에나 발생할 수 있지만, 췌장을 침범한 경우는 매우 드문 것으로 보고되고 있다. 저자들은 다발성 골수종환자에서 췌장을 침범한 골수외 형질세포종이 초음파상 혼재성 에코이고 CT와 MR에서 조영증강이 잘 되는 소견을 보였던 증례에 대해 보고하고자 한다. Extramedullary plasmacytoma involves organs outside the bone marrow, but involvement of the pancreas is very rare. We present the imaging findings of extramedullary plasmacytoma of the pancreas in a patient with multiple myeloma. Mixed echogenecity was noted at US, and marked enhancement at CT and MR.
김경아(Kim, Gyeong A),문태훈(Moon, Tae Hoon) 한국지역개발학회 2022 韓國地域開發學會誌 Vol.34 No.2
The purpose of this study is to apply the Genuine Progress Index(GPI) to selected large cities in Korea to compare and analyze changes in gross regional domestic product(GRDP) and genuine progress index(GPI), and to find policy implications for the development of large cities. To this end, the Genuine Progress Index(GPI) was applied to Seoul, Ulsan, and Daegu Metropolitan City. The Genuine Progress Index(GPI) is an index that comprehensively evaluates economic development, quality of life, and environmental sustainability. In this study, GPI was composed of 20 indicators of 5 dimensions. Analysis result shows that GPI was lower than GRDP in all three cities. It was confirmed that the degree of genuine progress encompassing economic development, quality of life, and environmental sustainability was lower than that of cities indicated by gross regional product. However, it was analyzed that the changes in GRDP and GPI in the three cities showed different pattern of changes. In particular, in the case of Ulsan, GRDP was higher than other cities, but GPI was found to be the lowest. Based on these analysis results, policy implications for each large city for genuine progress were discussed.