• Journal of Plant Biotechnology
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• 제30권2호
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• pp.129-133
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• 2003

The factors for symptom development caused by Beat curly top virus(BCTV) have been analyzed by using a molecular genetic approach based on expressing BCTV encoded proteins in transgenic plants. BCTV open reading frame (ORF) L4 expression in transgenic Arabidopsis resulted in abnormal plant development and the production of callus inflorescence stems and bumpy trichomes, confiming that this gene alone is a primary symptom determinant. The L4 gene expression by northern hybridization in transgenic plants and a range of phenotypes were analyzed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.2029-2033
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• 2010

Korea have 3 kinds of national railway safety target, which are accident fatalities, train accident rate, and passenger fatality per passenger kilometer. Increase of railway passenger and train operator force to setting up new safety target. Current safety target can not reflect train operator's safety activities because it include suicide and trespass related accident, which are hard to control by the operators. In order to reflect to the 2nd National Integrated Railway Safety Plan, new safety targets are roposed in this study.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.187-189
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• 2007

In this paper, we present a model-driven approach for RTOS-based embedded software development and an automated tool that produces RTOS-specific code or RTOS-independent code. We define generic RTOS APIs (Application Programming Interface) that are not bound to any specific RTOS but provide most of typical RTOS services. Generic RTOS APIs can be used to describe application's RTOS-related behavior, The proposed API translator translates task code between C-code for specific RTOS and intermediate code using generic API. Also, the result can be extended to other RTOS's modifying XML transformation rule.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2010년도 춘계학술발표논문집 2부
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• pp.971-973
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• 2010

선진국의 경우 무동력 수상 레저(Water leisure)분야에서는 카약(Kayak), 카누(Canoe)를 포함한 노 보트 종류가 가장 대중적인 상품으로 인식되고 있다. 특히, 국내의 경우 국민소득증가와 함께 보는 관광에서 체험관광으로 변화됨에 따라 수상레저상품에 대한 관심이 증가되고 있다. 또한, 한국은 2009년 말 해양레저활동이 가능한 마리나 사업을 발표함에 따라 수상레저참여인구의 폭발적 증가를 유도하고 있다. 한편, 국내 수상레저기구제작업체는 FRP 재료를 기반으로 하는 대량 생산 방법을 채택하고 있어 환경과 운영 및 관리에 어려움이 있어 새로운 재료를 이용한 제품에 대한 요구가 증가하고 있다. 본 연구에서는 수상레저기구중 가장 초보적인 제품인 카누를 친환경 소재를 이용하여 제작하고자 한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 D
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• pp.2677-2680
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• 2002

각종 시스템 및 시스템 제어 기술이 발달하면서 다양한 소자들의 소형 경량화가 빠르게 이루어지고 있다. 본 논문에서는 소형 경량화 된 디스플레이 소자인 Microdisplay와 CMOS 이미지센서의 특성, 제어방식 및 적용에 대하여 연구하였다. 그리고 이를 SOPC(system on a programmable chip) 설계 기법을 적용하여 설계하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.1335-1340
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• 2009

In order to establish railway long-tenn safety policy, various railway safety indexes are required. But these indexes are not use efficiently due to the limitation of safety information. Recently m any safety related information have been obtained based on Railway Safety Act 2004. In this study, various safety index, which can be applied both preventive safety activities and safety measure development, are proposed. These safety indexes are based on common safety index in European Railway Agency, but also include special index in Korea. Proposed safety index include accident results, precursors to accident, infrastructure, accident cost and safety management system. These indexes will be applied in railway industry from 2009.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1518-1523
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• 2008

Train collision and derailment are types of accident with low probability of occurrence, but they could lead to disastrous consequences including loss of lives and properties. The development of the risk assessment model has been called upon to predict and assess the risk for a long time. Nevertheless, the risk assessment model is recently introduced to the railway system in Korea. The classification of the hazardous events and causes is the commencement of the risk assessment model. In previous researches related to the classification, the hazardous events and causes were classified by centering the results. That classification was simple, but might not show the root cause of the hazardous events. This study has classified the train collision and derailment based on the relevant hazardous event including faults of the train related the accidents, and investigates the causes related to the hazardous events. For the risk assessment model, FTA (fault tree analysis) and ETA (event tree analysis) methods are introduced to assess the risk.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1524-1530
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• 2008

Generally a road vehicle's wrong entry into level crossing gives rise to hazardous events, the eventual collision with a approaching train depends on the effective operation of safety barriers such a abnormal condition detecting or emergency braking. In this paper, the risk assessment models developed for the level-crossing accidents will be introduced. The definition of hazardous events and the related hazardous factors are identified by the review of the accident history and engineering interpretation of the accident behavior. A probability of the hazardous events will be evaluated by the FTA, which is based on the accident scenario. For the severity estimation, the critical factors which can effect on the consequence will be reviewed during the ETA. Finally, the number of casualty for the public(vehicle drivers) and the train passengers are converted into an equivalent fatality.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1499-1504
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• 2008

This study shows risk-based evaluation results of casualty accidents for passengers, railway staffs and MOP(Member of public) on the national railway in South Korea. To evaluate risk of these accidents, the hazardous events and the hazardous factors were identified by the review of the accident history and engineering interpretation of the accident behavior. A probability evaluation model for each hazardous event which was based on the accident appearance scenario was developed by using the Fault Tree Analysis (FTA) technique. The probability for each hazardous event was evaluated from the historical data and structured expert judgment. In addition, the severity assessment model utilized by the Event Tree Analysis (ETA) technique was composed of the accident progress scenarios. And the severity for the hazardous events was estimated using fatalities and weighted injuries. The risk assessment model developed can be effectively utilized in defining the risk reduction measures in connection with the option analysis.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.795-800
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• 2009

Railway safety is one aspect of the transport service quality delivered to passengers, employees and third parties. To improve safety by a cultural shift from a deterministic to a risk based approach, European Railway Agency (ERA) introduces common and transparent methods to monitor safety performance and set targets and establishes safety management systems. The objective of this study is to review the common safety performance management method of the ERA(European Railway Agency) for it's application to the Korea railway. For this end, the risk assessment models were developed based on the accident scenarios and domestic railway accidents had been investigated and quantitative and qualitative analyses was performed using the developed information system.