http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 김동헌 (검색결과 658 건)
- 무료
- 기관 내 무료
- 유료
-
포렌식 준비도 향상을 위한 Windows NTFS 저널 로그 크기에 관한 연구
김동헌,오정훈,이상진 한국디지털포렌식학회 2024 디지털 포렌식 연구 Vol.18 No.1
모든 업무가 정보통신시스템으로 수행됨에 따라 침해사고와 정보 유출이 계속 발생하고 있어 신속하고 적절한 대응이 필요하다. 이에 따라 조직에서는 포렌식 준비도 개념을 기반으로 정보보호 대책을 수립하여 신뢰할 수 있는 디지털 증거를 수집할 수 있는 환경을 조성하고 사고 대응 비용을 최소화하려는 노력을 지속하고 있다. Windows NTFS 환경에서는 $LogFile과 $UsnJrnl이 파일 트랜잭션을 분석하기 위한 디지털 포렌식 아티팩트로 주로 활용되고 있다. 그러나 실제로는 아티팩트의 특성상 침해사고가 발생한 시점의 로그가 오래 보존되지 않아 이를 증거로 활용하기 어려운 경우가 많다. 본 논문에서는 윈도우 NTFS 시스템 환경에서 $LogFile과 $UsnJrnl의 크기에 대해 포렌식 준비도 관점에서 조망하여 침해 시도의 체류 시간을 고려한 적절한 기준을 제시하고 실험을 통해 이에 대한 효과성을 입증하고자 한다. 이를 통해 $LogFile과 $UsnJrnl의 크기를 조정한다면 조직의 포렌식 준비도를 제고할 수 있을 것이다. Recently, the need for prompt and appropriate response to threats such as intrusion accidents and data breaches within organizations has emerged. Accordingly, organizations continue to make efforts to establish information protection measures based on the concept of forensic readiness to create an environment in which reliable digital evidence can be collected and to minimize incident response costs. In the Windows NTFS environment, $LogFile and $UsnJrnl are mainly used as digital forensic artifacts to analyze file transactions. However, in reality, due to the nature of artifacts, the log at the time of the initial access of incidents is not preserved for a long time, so it is often difficult to use it as evidence. In this paper, we look at the setting the size of $LogFile and $UsnJrnl in the Windows NTFS system environment from the perspective of forensic readiness, suggest appropriate criteria considering the dwell time of an intrusion attempt, and try to prove its effectiveness through experiments. This will allow you to adjust Windows settings for the size of $LogFile and $UsnJrnl to improve your organization's forensic readiness.
-
코발트 염을 이용한 금어초 절화의 수확 후 굴지성 반응 억제
김동헌,정진,김용삼,손은규 한국농화학회 1999 Applied Biological Chemistry (Appl Biol Chem) Vol.42 No.4
It was previously reported that cobalt(II) effectively suppresses the postharvest gravitropic response of snapdragon (Antirrhinum majus L.) (Kim et al. (1997) Agric. Chem. and Biotechnol. 40, 567-571). In this study, several factors affecting the suppression of the gravitropic response by cobalt ion were examined. When flower stalks of snapdragon were pretreated with several different cobalt salts, cobalt nitrate turned out to be the most effective not only in reducing the response but also in preserving the flower quality. We also tested the effects of various detergents which were added to cobalt(II) solution, finding that Tween-40 was the best among the tested with respect to the effectiveness as well as the flower quality. Based on these results, we optimized a protocol for the chemical treatment; that is, a suppressor solution containing 10 mM Co(NO₃)₂ and 0.05% Tween-40 was directly sprayed on the gravitropically sensitive region of cut flowers of snapdragon. The suppressor treatment gave rise to a significantly improved results when the flower stalks were stored at a lower temperature after the chemical treatment.
-
청열공식도절제후 문합방법에 따른 문합부 협착의 빈도에 관한 연구
김동헌 부산대학교 병원 암연구소 2007 부산대병원학술지 Vol.- No.21
Purpose: The objective of this study is to compare hand-sewn and stapled method in esophagogastric anastomosis. Subject and Methods: We retrospectively reviewed a series of 37 patients who underwent transhiatal esophagectomy because of lower esophageal cancer and esophagogastric junction cancer in our hospital. We used silk 4-0 for hand-sewn anastomosis and EEA #25 for stapled anastomosis. We especially reviewed clinical date and the rate of anastomotic stricture and leakage from January, 1996 to December, 2005. Results: Hand-sewn anastomosis was used in 23 patients and stapled anastomosis was used in 14 patients. The incidence of stricture in anastomosis site was found one (4.3%) patients in hand-sewn anastomosis group and four (28.6%) patients in stapled anastomosis group. Less anastomotic stricture occurred in the hand-sewn anastomosis than in the stapled anastomosis (P=0.0004). No significant differences were found in the other clinical analysis between the two groups. Conclusion: Hand-sewn anastomosis showed less stricture rates. Hand-sewn method is safer and more effective for esophagogastric anastomosis than stapled method.
-
-
-
-
-
Risk Premium, Liquidity Premium, and Expectations Hypothesis in the Treasury Bill Market
김동헌 한국계량경제학회 2008 계량경제학보 Vol.19 No.2
This paper examines whether the risk premium and the liquidity premium play an important role in explaining excess holding period return and whether two components can explain the empirical failure of expectations hypothesis. The paper finds from the study of U.S. Treasury Bill rates that the risk premium and the liquidity premium are important in explaining excess holding period return. However, the expectations hypothesis is not salvaged under the maintained hypothesis concerning the liquidity premium and risk premium although two premiums improve the forecastability of yield spread. The paper attributes the results to the possibility that the difference between the relative bid-ask spread of T-bill rates is not accurate measure for the time-varying liquidity.
-
김동헌,신규철,김보현 대한골절학회 1995 대한골절학회지 Vol.8 No.3
The floating knee describes the fail knee joint segment resulting from fractures of the shafts or adjacent metaphyses of the ipsilateral femur and tibia. It usually is associated with major soft tissue damages, open fractures, and other site injuries. The methods of treatment have been controversal .The key point of the treatment is focussed to the early restoration of the knee function. The floating knee in 24 patients were treated by surgical management from March 1988 to December 1994. The results were follows: 1.Average bone union time in femur was 20 weeks and in tibia was 18 weeks. Difference of the result of the treatment between the interlocking nail and Ender nail was not significant. 2. At the last follow up, the excellent and good results were 83% by Karlstrom and Olerud criteria, and the first group using the intrameduallary nail achieved best result. 3. The most common complication was loss of the range of motion of the knee and loss of the range of motion of the knee was 0 to 45 degrees(the average 7 degrees).
-
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
