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조선 초기 관료의 관청이동을 통해 본 주요 통치기구의 위상 - HAVNet 자료를 중심으로 -
최상일 ( Choi Sangil ),백승민 ( Paek Seungmin ),최지우 ( Choi Jiwoo ),예홍진 ( Yeh Hongjin ),이상국 ( Lee Sangkuk ) 수선사학회 2021 史林 Vol.- No.75
This paper is an introductory study to comprehensively grasp the betweenness centrality of government offices in the early Joseon dynasty using HAVNet data. The process of extracting data around the “Annals of the Joseon Dynasty” and designing and building HAVNet as the basis for research was conducted by history and computer science researchers, which were not the usual method in Korean historical research until now. The approach and analysis results carried out in this study are fundamentally different from previous studies related to the government organizations in the early Joseon dynasty. It is unique study in that it was analyzed based on the contents recorded in the Annals of the Joseon dynasty, not on previous research framework of analysis of state administration and government organizations in the early Joseon dynasty. Based on this study, we will conduct an interdisciplinary research that comprehensively analyzes blood ties and relationships among all historical figures of the Joseon dynasty.
안드로이드 어플리케이션 신뢰성 검증을 위한 무결성 인증 방식
최진성 ( Jinsung Choi ),최옥경 ( Okkyung Choi ),예홍진 ( Hongjin Yeh ) 한국정보처리학회 2012 한국정보처리학회 학술대회논문집 Vol.19 No.1
현재 전 세계의 스마트폰 시장은 아이폰과 안드로이드폰의 구도로 되어 있다고 해도 과언이 아니다. 아이폰의 앱 스토어에 어플리케이션을 올리기 위해서는 애플의 검증을 거쳐야 가능하지만, 안드로이드의 안드로이드마켓은 구글의 검증 없이 누구나 자유롭게 올릴 수 있다. 그렇기 때문에 스마트폰의 보안문제가 대두되고 있는 요즘, 안드로이드마켓에서 내려 받는 어플리케이션에 대한 신뢰성이 떨어지는 것이 사실이다. 본 논문에서는 이러한 안드로이드 어플리케이션의 신뢰성 검증을 위한 인증 어플리케이션을 제안함으로써 사용자가 악의적으로 변조된 어플리케이션에 대한 대응이 가능하도록 하고자 한다. 마지막으로 테스트를 통하여 본 연구의 효율성 및 타당성을 입증하였다.
Hongjin Shim,Dae Ryong Kang,Hye Sim Kim,Ji Young Jang,Ou-Hyen Kim,Kiyoung Kim,Un Young Choi,Ko Ji Wool,Keum Seok Bae 대한외상중환자외과학회 2024 Journal of Acute Care Surgery Vol.14 No.1
Purpose: We sought to assess mortality trends in chest-abdominal trauma patients, before and after theimplementation of the Project Supporting Establishment of Trauma Centers (PSETC) in the Republic ofKorea. Methods: Data from the National Health Insurance Service claims database between 2009 to 2017 wereanalyzed. Patients with chest-abdominal trauma were defined as those with relevant main diagnosiscodes and claims for emergency medical management fees. Mortality and cumulative data were analyzedfor each year to compare mortality before and after the establishment of regional trauma centers acrossKorea (2014). Results: In total, 29,127 patients were included in the analysis. While the annual incidence of trauma-related chest-abdominal injuries increased, mortalities decreased. In particular, the trauma incidencerate among patients over 50 years increased during the study period. Mortalities at trauma centers didnot change year by year after the PSETC. Before and after 2014, when trauma centers operated underthe PSETC, mortalities decreased [trauma cases before the PSETC; n = 14,321 (mortality 5.61), after thePSETC; n = 14,806 (mortality 4.96)]. Conclusion: The number of patients treated for chest-abdominal injuries increased from 2009 to 2017 inKorea, whereas mortalities decreased over the same period.
시스템 식별을 통한 TMD의 태풍거동 및 풍진동 저감성능 분석
최선영(Choi Sunyoung),조성우(Jo Seongwoo),김홍진(Kim Hongjin),황재승(Hwang Jea-Seung) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
The typhoon behavior and performance of a tuned mass damper (TMD) are presented based on the system identification and modal wind load estimation. The TMD is installed on a 39-story, 184.6m steel building located in Songdo, Incheon, and the monitoring system including an anemometer, accelerometers, and internet-based data logging system. The building had experienced a Typhoon ‘Gonpas’ on Sep. 2, 2010, and the peak wind speed measured by an anemometer installed on the roof floor was 49.7 ㎧. The coupled building-TMD modes and modal wind load are identified and the vibration reduction performance of the TMD is evaluated.
최관순(KwanSun Choi),전흥구(HeungGoo Jun),유홍진(HongJin Yoo) 한국정보기술학회 2004 한국정보기술학회논문지 Vol.2 No.1
A Data Logger System collects and utilizes data short/long systems in real-time. The system is now generally used as it has been automated and it is applied in the fields such as forecasting, inspection and commercial facilities management systems. In our developed Data Logger System, the communications between the master and slave on the embodied system use the RS-422 type serial communications which maximizes the data transfer distance. In addition, the server and client utilize the existing network and they are embodied using TCP/IP protocol environment. The monitoring program is composed of the server side program and client program. By plotting out graphs with the real-time data, the monitoring system conveniently displays the data change.
DFSS시험기법을 이용한 저압축비 HSDI 디젤 엔진의 냉시동성 개발
최회명(Hoimyung Choi),노홍진(Hongjin Noh),이흥우(Hyeungwoo Lee),지요한(Yohan Chi),윤금중(Kum Jung Yoon) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A new process was proposed for developing the idle stability under cold starting of passenger car HSDI diesel engine. Injection parameters were successfully optimized for the starting time and the idle stability of 1.5 liter HSDI diesel engine at -25℃ through this process which includes the DFSS experimental method. The THC exhaust emission was measured during cold start and utilized for index of white smoke.
( Young Un Choi ),( Jae Gil Lee ),( Kwangmin Kim ),( Seongyup Kim ),( Keumseok Bae ),( Ji Young Jang ),( Pil Young Jung ),( Hongjin Shim ),( Young Jin Youn ),( Il Hwan Park ) 대한외상학회 2017 大韓外傷學會誌 Vol.30 No.4
Traumatic abdominal vessel injury is rare, but difficult to manage. Approaching the injured vessel and controlling the bleeding is very hard. We experienced the right iliac artery transection managed by iliofemoral bypass grafting using temporary balloon occlusion. Proximal occlusion of an iliac artery with a temporary balloon cab be an option or bridge technique for a definite operation in case of iliac artery rupture. So, we present our case.