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제주 텔레매틱스 시범 서비스의 설계 - 텔레매틱스 세상으로의 한 걸음의 전진
장인성(InSung Jang),유재준(JaeJun Yoo),최완식(WanSik Choi),박종현(JongHyun Park) 한국정보과학회 2005 한국정보과학회 학술발표논문집 Vol.32 No.1
정보 통신 기술의 빠른 발전으로 인해 차량이 단순한 운전 공간이 아닌 다양한 서비스를 이용할 수 있는 복합적 환경으로 변모해 감에 따라 텔레매틱스라는 말이 더 이상 낯선 말이 되지 않고 있다. 이에 세계의 여러 나라들은 이와 관련된 IT 산업에서의 경쟁력 확보를 위해 핵심 기술을 더욱 연구 개발하고 있다. 본 논문에서는 텔레매틱스 기술을 발전시키고, 관련 산업을 더욱 활성화 시키기 위하여 현재 진행중인 제주 텔레매틱스 시범 서비스에 대해 소개한다. 제주 텔레매틱스 시범 서비스는 향후 관련 기술의 향상과 국외 텔레매틱스 기술에서의 주도권 확보를 통하여 한국이 텔레매틱스 강국이 되는 것을 목표로 하고 있다.
Jang, Jin-Hwa,Lee, Ji-Hae,Je, Mi-Kyung,Cho, Myeong-Ji,Bae, Young Mee,Son, Hyeon Seok,Ahn, Insung The Korean Society for Preventive Medicine 2015 Journal of Preventive Medicine and Public Health Vol.48 No.4
Objectives: This study was performed to investigate the relationship between the incidence of national notifiable infectious diseases (NNIDs) and meteorological factors, air pollution levels, and hospital resources in Korea. Methods: We collected and stored 660 000 pieces of publicly available data associated with infectious diseases from public data portals and the Diseases Web Statistics System of Korea. We analyzed correlations between the monthly incidence of these diseases and monthly average temperatures and monthly average relative humidity, as well as vaccination rates, number of hospitals, and number of hospital beds by district in Seoul. Results: Of the 34 NNIDs, malaria showed the most significant correlation with temperature (r=0.949, p<0.01) and concentration of nitrogen dioxide (r=-0.884, p<0.01). We also found a strong correlation between the incidence of NNIDs and the number of hospital beds in 25 districts in Seoul (r=0.606, p<0.01). In particular, Geumcheon-gu was found to have the lowest incidence rate of NNIDs and the highest number of hospital beds per patient. Conclusions: In this study, we conducted a correlational analysis of public data from Korean government portals that can be used as parameters to forecast the spread of outbreaks.
Chemical kinetics-assisted, path-based smoke simulation
Jang, Yoojin,Ihm, Insung John Wiley Sons, Ltd. 2009 COMPUTER ANIMATION AND VIRTUAL WORLDS Vol.20 No.2
<P>Despite recent successes in physics-based fluid animation, generating desired fluid flow with intuitive control of its motion still remains a challenging problem in the special effects industry. In this paper, we propose a novel approach for path-based smoke simulation that explores the theory of chemical kinetics in an aim to provide a useful animation tool. By describing intended smoke effects through chemical reaction equations and adjusting their parameters, our method allows to easily create various interesting smoke effects that were often hard to get with previous techniques. To demonstrate the effectiveness of the presented animation framework, we describe several examples of path-based smoke animations, generated with easily understandable reaction equations and control parameters. Copyright © 2009 John Wiley & Sons, Ltd.</P> <B>Graphic Abstract</B> <P>This paper presents a novel approach for path-based smoke simulation that explores the theory of chemical kinetics in an aim to provide a useful animation tool. By describing intended smoke effects through chemical reaction equations and adjusting their parameters, it allows to easily create various interesting smoke effects that were often hard to get with previous techniques. We describe several examples of path-based smoke animations, generated with easily understandable reaction equations and control parameters. <img src='wiley_img/15464261-2009-20-2-3-CAV286-gra001.gif' alt='wiley_img/15464261-2009-20-2-3-CAV286-gra001'> </P>
김인성(Insung Kim),이준호(Joonho Lee),손갑식(Gapsik Son),장익수(Iksoo Jang),박용균(Yongjun Piao),이문석(Moonseok Lee),정은환(Eunhwan Jung),박종연(Jongyoun Park) 한국추진공학회 2015 한국추진공학회 학술대회논문집 Vol.2015 No.11
액체로켓 엔진의 짐벌마운트는 엔진 조립체와 발사체 후방동체 사이에서 두 축 회전운동을 통해 발사체의 피치(pitch) 및 요(yaw) 방향 운동을 가능케 하는 중요 엔진 구성품이다. 짐벌마운트는 높은 구조 강도와 강성, 낮은 베어링 마찰토크, 엔진 연소시간 동안의 충분한 수명 등의 요구조건들을 기준으로 개발되고 그 적합성이 시험을 통해 검증되어야 한다. 75톤급 액체로켓 엔진의 짐벌마운트 개발적합성을 확인하기 위해 엔진 연소 및 비행 중 발생할 축뱡향 및 횡방향 하중 등 방향별 하중인가와 발사체의 방향제어를 위한 짐벌링 운동 모사가 가능하도록 시험장치를 개발하였고, 이 시험장치를 이용해 짐벌마운트의 정하중 시험, 강성 시험, 마찰토크 시험, 수명시험 등을 수행할 수 있도록 하였다. A gimbal mount of rocket engine is an engine component to make a pitch and yaw movement of the launch vehicle possible by its two axis gimbaling motion. The gimbal mount requires high structural strength, high stiffness, low bearing friction torque and enough life cycle to guarantee its safe operation during the full duration of combustion. Test facility for the gimbal mount of 75 ton engine which has the function of load application, gimbaling motion and measurement of the strength, stiffness and friction torque is developed to perform gimbal mount tests such as static test, stiffness test, friction torque test, life cycle test.