철도소프트웨어에 대한 프로세스 성숙도 적용 연구

정의진(Eui-jin Joung),신경호(Kyung-ho Shin),이강미(Kang-mi Lee),조현정(Hyun-jeong Cho) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-

The softwares in a railway system are being used in the area of railway control system, directly associated to safety, as well as in the field of data collection or database, which is not related to safety. Also the software takes the form of □□Embedded□□ that let it behave at the level of system, instead of independent operation. Consequently, it can be considered that the safety of software is combined with that of hardware, and also directly connected to system safety. The approach, for ensuring the quality and safety of those software, can be considered with two points of view. Those are views seeing from products, and from processes. The former one is to check the states of the finally launched products, rather than to examine the manufacturing processes and work forces, the latter approach assumes that the process maturity should be based to make good quality and sound software. The product approach is to check the safety of products by performing proper tests (White Box or Black Box test) to developed products depending on each Lifecycle, and the process approach is to validate maturity of the organizations in accordance to the judging processes of organizations, which are specified by CMMI(Capability Maturity Model Integration) or SPICE(Software Process Improvement and Capability dEtermination : ISO/IEC15504). The two points of approach are all necessary in the railway system. In this paper, as the first step of them, we are trying to find approaches to estimate the maturity of manufacturer and assessment organization in the railway system.

도시철도 신호시스템의 절체에 따른 주파수 간섭 연구

정락교(Jeong, Rag-Gyo),김백현(Kim, Baek-Hyun),정의진(Joung, Eui-Jin) 한국산학기술학회 2010 한국산학기술학회논문지 Vol.11 No.2

철도신호시스템은 열차들의 운행간격과 열차진로를 제어하는 기능을 담당함으로써 열차를 안전하고 효율적 으로 운영하는 데 있어 핵심적인 역할을 수행한다. 철도신호시스템의 고장은 열차운행중지를 비롯하여 열차충돌이나 탈선등과 같은 치명적인 사고로 직결될 수 있기 때문에 시스템의 신뢰성과 안전성이 매우 중요하다. 현재까지 철도신 호시스템에서는 기존의 지상신호방식이 많이 사용되어 왔으나, 지상에 설치된 신호기 현시상태를 기관사가 육안으로 확인하여 열차속도를 제어함에 따른 기관사의 인적오류 등의 사고 위험이 있다. 아울러 시스템의 수명이 다 되어 시 스템절체의 필요성이 있다. 이에 따라 최근에는 컴퓨터 및 통신기술을 이용하여 열차속도제어 정보를 차량으로 송신 하여 차량에서 열차속도를 제어하는 차상신호방식이 도입 및 적용되어 효과를 나타내고 있다. 수명이 다 된 신호시스 템을 교체하기 위하여 승객을 위한 운행서비스를 하면서 새로운 방식으로 절체하는 것이 필요하다. 이에 본 논문에서 는 열차를 운영하면서 기존의 시스템과 새로운 시스템을 혼용하여 사용하면서 절체과정의 절차와 시스템 검증을 위 한 일련의 과정 중 간섭 문제에 대하여 특정한 기능을 부가하여 해결된 사례를 시험평가를 통해 검증하였다. The railway signalling system plays an essential role in the safe and efficient train operation as serving control functions of train operation intervals and train routes. The reliability and safety of the system are very important because the failure of the railway signalling system can lead to train collision or derailment as well as train operation stop. Until now, in railway signalling system the conventional wayside signal mode has been used generally. There are, however, the risk of accidents such as human mistakes caused by that the driver identifies the signal lamp status and controls train speed with the naked eye. It is also necessary to refurbish the obsolete system. Thereby, It is being effective that the onboard signal mode has been recently introduced and applied in order to transmit the speed control information to train by using the computer and communication equipment. It is necessary to switch over the system in a way while providing passengers with an operation service to replace the obsolete signal system. In this paper, we verify the cases through trial assessment which are solved by the way of adding specific functionalities in the problems of interference among the procedure of switch-over processes and a serial of processes for system verification while a train is operated in the new system in parallel to the existing system.

잔사회를 이용한 인공경량골재의 소성온도 및 시간별 발포특성

김용혁(Kim, Yong Hyok),정의진(Jeong, Eui Jin) 한국콘크리트학회 2014 한국콘크리트학회 학술대회 논문집 Vol.2014 No.10

철도응용분야에서의 갈릴레오 시스템의 적용방안 연구

신경호(Shin Kyung-Ho),정의진(Joung Eui Jin),이준호(Lee Jun Ho),정락교(Jeong Rag Gyo) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-

EU is in the process of developing a new european global navigation satellite system - Galileo project - which technologies and capitals from member states of EU are put into, after determining to set up a separate GPS against that of US late in the 1990s. Galileo system is commercial global navigation satellite system, which allows other else nations outside of EU to participate in system development and operation, different from GPS. Korea also decided to join in the project on February in 2005. Galileo system provide 5 Services - Open Service, Safety of Life, Commercial Service, Public Regulated Service, Search and Rescue Service, and especially it can be applicable to safety-critical areas, and is to provide its part of services certified. In this paper, we are to compare the services of Galileo system, and to present necessary factors to be considered, and the applicability to use the Galileo system in safety-critical application areas, such as train control system

열차제어시스템을 위한 바이탈 소프트웨어 테스팅 자동화 도구의 제안

황종규(Hwang Jong-gyu),조현정(Jo Hyun-jeong),정의진(Jeong Eui-jin) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.4

A S/W testing for vital railway signaling system have been important because of the increase of software usage for signaling. And also the safety of vital signaling system is required by int‘l std. such as IEC 61508. While much efforts have been reported to improve electronic hardware's safety, not so much systematic approaches to assessment software's safety. In this paper, we propose a automation schemen of software testing tool for railway signaling system. From that, we show the functional architecture and internal components of the tool.

MPPT 충전방식을 적용한 접철식 태양광 추적장치의 구동제어시스템 설계

김기효(Gi-Hyo Kim),손영대(Young-Dae Son),정의진(Eui-Jin Jeong) 대한전기학회 2013 대한전기학회 학술대회 논문집 Vol.2013 No.7

물결합재비와 혼화재를 달리한 경량콘크리트의 특성

박조범(Park Cho-Bum),백철우(Back Chul-Woo),조현태(Jo Hyun-Tae),김용혁(Kim Yong-Hyok),정의진(Jeong Eui-Jin),류득현(Ryu Deug-Hyun) 한국콘크리트학회 2016 한국콘크리트학회 학술대회 논문집 Vol.28 No.1

19C 영국 청소년 문학 속에 나타난 남성다운 인간상의 스포츠

하남길,정의진 한국체육사학회 2003 체육사학회지 Vol.11 No.-

In the process of modernization, a great deal of British and American sports culture was diffused into out own educational system as well as our livelihood. However we lacked research in the areas such as the origin and background to the development of British sports culture. In a general point of view British Sports culture was a creation of several factors such as British politics, society, geography, religion and nationality. However in an ideological sense, the single most influential factor in the development of British sports culture was Muscular Christianity and at the nucleus of Muscular Christianity was the concept of manliness. Therefore this article was written with two main objectives. Firstly, 19th century juvenile literature and its ideals of masculinity were examined in order to reveal the figure of a manly juvenile. Secondly, this article examines the rearing of masculine juveniles and its correlation with the development of sports. In novels by Thomas Hughes such as BOP(The Boys Own Paper) the character of a masculine gentleman illustrated was similar to that of a Middle Age Knight with outstanding prowess in sports. This was the appearance of a typical gentleman of the late 19th century and among the characteristics demanded of them were; bravery, honesty, honour, patriotism, loyalty between friends, exceptional ability in masculine sports, empathy for the weak, an unyielding stance against the strong, manners and a worthy attitude of the defeated. That is to say, a courageous and loyal knight of the old. In order to create a template of a manly gentleman in upper class education, training of youths in organisations such as the Boyscout in addition to sports and outdoor activities were considered vital. These physical training bore the intent of prolonging the tradition of sturdy manliness. In addition, an ethical temperament was also emphasised. However, further emphasised than this ethical quality in juvenile literature of this age was to incite in youths the idol of a man; aggressive and harsh, brave, relentless and one that does not step back in the face of battle. To encourage these male temperaments, sports was considered important and as a result sports developed earlier in Great Britain than in other nations.