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김남욱,이동규,엄정호,Kim, Nam-Uk,Lee, Dong-Gyu,Eom, Jung-Ho 한국융합보안학회 2021 융합보안 논문지 Vol.21 No.1
지능형 사이버 공격으로 인한 피해는 시스템 운영 중단과 정보 유출뿐만 아니라 엄청난 규모의 경제적 손실을 동반한다. 최근 사이버 공격은 공격 목표가 뚜렷하며, 고도화된 공격 도구와 기법을 활용하여 정확하게 공격 대상으로 침투한다. 이러한 지능적인 사이버 공격으로 인한 피해를 최소화하기 위해서는 사이버 공격이 공격 대상의 핵심 시스템까지 침입하지 못하도록 공격 초기 또는 과정에서 차단해야 한다. 최근에는 빅데이터나 인공지능 기술을 활용하여 사이버 공격 경로를 예측하고 위험 수준을 분석하는 보안 기술들이 연구되고 있다. 본 논문에서는 자동화 사이버 공격 경로 예측 시스템 개발을 위한 기초 메커니즘으로 공격 트리와 RFI 기법을 활용한 사이버 공격 경로 분석 방법을 제안한다. 공격 트리를 활용하여 공격 경로를 가시화하고 각 공격 단계에서 RFI 기법을 이용하여 다음 단계로 이동할 수 있는 경로를 판단한다. 향후에 제안한 방법을 기반으로 빅데이터와 딥러닝 기술을 활용한 자동화된 사이버 공격 경로 예측 시스템의 메커니즘으로 활용할 수 있다. Damage caused by intelligent cyber attacks not only disrupts system operations and leaks information, but also entails massive economic damage. Recently, cyber attacks have a distinct goal and use advanced attack tools and techniques to accurately infiltrate the target. In order to minimize the damage caused by such an intelligent cyber attack, it is necessary to block the cyber attack at the beginning or during the attack to prevent it from invading the target's core system. Recently, technologies for predicting cyber attack paths and analyzing risk level of cyber attack using big data or artificial intelligence technologies are being studied. In this paper, a cyber attack path analysis method using attack tree and RFI is proposed as a basic algorithm for the development of an automated cyber attack path prediction system. The attack path is visualized using the attack tree, and the priority of the path that can move to the next step is determined using the RFI technique in each attack step. Based on the proposed mechanism, it can contribute to the development of an automated cyber attack path prediction system using big data and deep learning technology.
김남욱,노석선,Kim, Nam-uk,Roh, Sek-seon 대한한방안이비인후피부과학회 1998 한방안이비인후피부과학회지 Vol.11 No.1
In the literatual studies on the yupung(油風), the results were as follows. 1. Yupung(油風) was called 'Quijidu(鬼지頭)', 'Quichedu(鬼剃頭)', 'Ballak(髮落)' etc. It was a localized loss of hair in round or oval ares without any subjective symptom 2. The etiology and pathogenesis of Yupung were disorder of vital energy& blood circulation caused by deficiency of blood and wind-dryness syndrome, energy-stagnation and blood stasis, impairment of the liver & kidney. The treatments of Yupung were invigorating the liver & kidney, clearing away heat-evil and cooling blood, nourishing the liver & kidney, activating blood circulation to dissipate blood stasis etc, 3. In the frequency of prescription, the most numerous prescription is Shineuingyangjindan(神應養眞丹) and the next are Tonggyuhwalhyultang(通竅活血湯) & Chilbomiyumdan(七寶美髥丹), 4. In the frequency of medicine, the most numerous medicine is Radix Angelicae Sinensis(當歸) and the next are Rhizoma Rehmanniae Praeparatae(熟地黃) & Rhizoma Ligusiici Chuanxiong(川芎). 5. In classification of drug action, medicines of clearing away wind-heat evil and invigorating yin used to be very busy. 6. In classification of four characters, the most parts are warm medicine. 7. In classification of five tastes, the most numerous tastes are sweet and bitter tastes. 8. In classification of toxicity, the most is non-toxic medicines. 9. In classification of the channel distribution, the most is the medicine that belongs to liver channel. 10. In acupuncture theraphy, it was used 'GV20(百會)', 'G20(風池)', 'GV16(風府)', 'GV14(大椎)', 'LI4(合谷)' etc. in body acupuncture, was used 'S25(天樞)', 'GV14(大椎)', 'B13(肺兪)', 'LI11(曲池)' etc. in moxibustion.
조각자(조角刺) 추출물(抽出物)이 정상 흰쥐의 뇌혈류(腦血流) 변화(變化)에 미치는 영향(影響)
김남욱 ( Nam Uk Kim ),조국령 ( Gook Ryung Cho ),임대웅 ( Dae Woong Lim ),신용수 ( Yong Su Shin ),김진성 ( Jin Sung Kim ),최진봉 ( Jin Bong Choi ),전상윤 ( Sang Yun Jeon ),홍석 ( Seok Hong ) 한방재활의학과학회 2009 한방재활의학과학회지 Vol.19 No.1
Objectives: This study was designed to investigate the effects of Gleditsiae spina(GS) on changes in cerebral blood flow in rats. Methods: The present study was investigated regional cerebral blood flow(rCBF) and mean arterial blod pressure(MABP) in rats. In addtion, the present study also investigated action mechanisms of GS on changes in rCBF and MABP by Pre-treatment with indomethacin(Idm) and methylene blue(MTB), an inhibitor of a vasodepressor material. Results: Treatment with GS elevated rCBF in dose-dependent manner, but MABP levels were not affected by treatment with GS. Pre-treatment with indomethacin(IDM), an inhibitor of cyclooxygenase, inhibited increase of rCBF induced by GS too, In addition, Pre-treatment with MTB inhibited increase of MABP too. But, Pre-treatment with IDM did not affect MABP levels. Conclusions: These results suggest that GS is effective to treat patient with disease related to cerebral ischemia, because GS can increase rCBF. In addition, the mechanisms are thought to be related to both of cyclooxygenase and guanylate cyclase pathways.