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차량용 임베디드 제어기에서 Power on Reset 발생 시 정보 수집 방법
배재현(Jaehyun Bae),유민수(Minsoo Ryu) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
본 논문은 차량용 임베디드 제어기에서 Power on Reset 이 발생하였을 경우 리셋이 발생하는 경로를 우회하여 Power on Reset 의 원인을 규명하는데 도움이 되는 최소한의 정보를 수집하고 이를 비휘발성 메모리(EEPROM)에 기록하는 방법에 대해 제시한다. Power on Reset 의 경우 정보를 기록하는 경로를 파악하기 어려우며 특히 Cold Power on Reset 의 경우 리셋 이후에는 RAM 의 정보를 사용할 수 없다[3]. 이를 해결하기 위해 Infineon AURIX 환경에서의 리셋 특징에 대해 알아보고 그중 전압 이상으로 발생하는 리셋인 Cold Power on Reset 의 발생 경로를 분석한다. 이후 Cold Power on Reset 시 정보를 기록하는 방법을 제시하고 리셋의 원인 규명에 도움이 될 수 있는 정보에 대해 설명한다. 그 결과 리셋 준비 시간(약 180us) 내 비휘발성 메모리에 최대 4 개의 페이지(128 bits)를 기록할 수 있었으며 이를 통해 최근 발생한 전압과 관련된 정보(저전압 및 과전압)들과 실행되었던 태스크 및 인터럽트 등의 OS 정보를 파악할 수 있었다.
배재현(Jaehyun Bae),노우영(Wooyoung No) 국제개발협력학회 2011 국제개발협력연구 Vol.3 No.1
KOICA s Training Program constitutes one of the most important components of the Korea s International Development Cooperation. This study analysis effectiveness of KOICA s Training Program for Tanzania, which we have given the most assistance in Africa s 5 priority countries, by Focus Group Interviews, Semi-Structure Interviews as well as the Literature and Document reviews. Overall view of KOICA s Training Program for Tanzania, mostly appropriate on processes, scheduling, and types of Training Program but in terms of contents and delivery, the research finds that KOICA s Training Program need to expand field trips rather than in-class lectures and to have more experts with specialized knowledge on trainees s country. The research also finds KOICA s Training Program give some positive impact on trainees themselves and their organizations by benchmark a successful case of Korea s development. Nevertheless, there are many aspects that can be improved for the future.
색소피부건조증 환자에서 발생한 안면부 기저세포암의 치료 증례 보고
배재현(Jaehyun Bae),전동근(Dongkeun Jun),김지남(Jeenam Kim),이명철(Myungchul Lee),신동혁(Donghyeok Shin),임소덕(So Dug Lim),최현곤(Hyungon Choi) 대한두경부종양학회 2020 대한두경부 종양학회지 Vol.36 No.1
Xeroderma pigmentosum is a rare autosomal recessive disease, related to defects in DNA repair mechanism. It presents skin lesions on sun-exposed areas, leading to various skin cancer. Skin lesions can be treated with cryotherapy, skin resurfacing, 5-FU, Imiquimod, topical T4 endonuclease V, radiotherapy and genetic therapy, but invasive skin cancer should be treated by a surgery. We report a 12-year-old female xeroderma pigmentosum patient with recurrent basal cell carcinoma successfully treated by skin grafting. In that there is no cure for this disease, prevention and patient education is most important.
배재현 ( Jaehyun Bae ),양용수 ( Yong-su Yang ),김현영 ( Hyun-young Kim ),황보규 ( Bo-kyu Hwang ),이춘우 ( Chun-woo Lee ),박수봉 ( Subong Park ),이지훈 ( Jihoon Lee ) 한국수산해양기술학회(구 한국어업기술학회) 2019 수산해양기술연구 Vol.55 No.1
The concern on the greenhouse gas emissions is increasing globally. Especially, the greenhouse gas emission from fisheries is an important issue from the Paris Climate Change Accord in 2015. Furthermore, the Korean government has a plan to reduce the GHG emissions as 4.8% compared to the BAU in fisheries until 2020. However, the investigation on the GHG emissions from Korean fisheries rarely carried out consistently. Therefore, the quantitative analysis of GHG emissions from Korean fishery industry is necessary as a first step to find a relevant way to reduce GHG emissions from fisheries. The purpose of this research is to investigate which degree of GHG emitted from the major offshore fisheries such as offshore gillnet fishery, offshore longline fishery, offshore jigging fishery and anchovy drag net fishery. Here, we calculated the GHG emissions from the fisheries using the Life Cycle Assessment method. The system boundary and input parameters for each process level are defined for the LCA analysis. The fuel use coefficients of the fisheries are also calculated according to the fuel type. The GHG emissions from sea activities by the fisheries will be dealt with. Furthermore, the GHG emissions for the unit weight of fishes are calculated with consideration to the different consuming areas as well. The results will be helpful to understand the circumstances of GHG emissions from Korean fisheries
보강된 이음부가 적용된 조립식 프리캐스트 콘크리트 아치의 단면 강도 평가
주상훈,정철헌,배재현,Joo, Sanghoon,Chung, Chulhun,Bae, Jaehyun 대한토목학회 2014 대한토목학회논문집 Vol.34 No.5
In the previous study, the structural performance of proposed precast concrete arch with reinforced joint was evaluated by structural experiment. In this paper, finite element analysis considering both material and contact nonlinearity was carried out on the specimens of the previous study. Based on the result of analysis and experiment, friction coefficient between concrete blocks was determined. To evaluate the strength of sectional member, elastic analysis was carried out on the arch using linear elastic analysis program. The section force was compared with the nominal strength of arch section. It was concluded that the maximum load of all the specimens exceed the nominal strength of arch section. Those results of the strength evaluation were similar to the results of structural experiments. Therefore, it is concluded that the elastic analysis and ultimate strength model can effectively evaluate the strength for the proposed precast concrete arch composed of concrete blocks and reinforced joint in design. 선행연구에서 제안된 조립식 프리캐스트 콘크리트 아치의 구조성능이 실험적으로 평가되었다. 본 연구에서는 이에 대하여 재료 및 접촉 비선형을 고려한 유한요소해석을 수행하였으며, 실험결과와 비교하여 콘크리트 블록 간의 마찰계수를 결정하였다. 아치부재 단면의 강도를 평가하기 위해 탄성해석으로 단면력을 산정하여 이를 단면의 공칭강도와 비교하였다. 모든 실험체에서 평가된 최대 하중은 부재단면의 공칭강도를 상회하였으며, 실험과 유사한 결과를 보였다. 따라서 탄성해석과 단면의 극한강도모델에 의한 방법은 설계시 콘크리트 블록과 보강된 이음부로 구성된 조립식 프리캐스트 콘크리트 아치의 단면 강도를 효과적으로 평가할 수 있을 것으로 판단된다.