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      • KCI우수등재

        효율적인 네트워크 고립을 위한 공격기법에 대한 연구

        한규석(Kyu Seok Han),윤지원(Jiwon Yoon),김태규(Taekyu Kim),박영우(Young Woo Park),한정규(Jungkyu Han) Korean Institute of Information Scientists and Eng 2018 정보과학회논문지 Vol.45 No.5

        Many devices and objects have recently been connected to the network using the Internet of Thing technology. In a local area network (LAN) network for small scale, many devices are connected and the complexity of the network topology is greatly increased. Large-scale networks of such small-scale networks are also expanding nationwide. he flow of gathering and spreading data in a concentrated or distributed manner within a large network is being made. This is useful for various industries, financial, telecommunications, military, and power generation facilities in statebased industries use the nationwide Internet network to control and maintain a stream of data that can cope with emergency situations. In a network environment that has such a circumstance, if a critical device (node) or a small range of network (LAN) that is involved in the control, data collection, storage, or data processing is isolated and isolated from the entire network. This paper discusses techniques for isolating critical LANs or Nodes in large networks.

      • KCI우수등재

        기계학습을 이용한 네트워크 전장정보 수집

        한규석(Kyu Seok Han),김태규(Taekyu Kim),심신우(Shinwoo Shim),전성구(Sung Goo Jun),윤지원(Jiwon Yoon) Korean Institute of Information Scientists and Eng 2018 정보과학회논문지 Vol.45 No.10

        Recently, various systems based on Internet of Things (IOT) and Information and Communications Technologies(ICT) have been developed. Today, assorted devices are connected to a network, and various operating systems according to devices having different resources and functions have appeared. With the increased need for in hacking security, researches on the vulnerability analysis of the operating system installed on each device and the actual attack technique have been carried out. Accordingly, the type and detailed version of the operating system of the device, Function (API) is emerging as important information in security. Since the control of this information gathering in the cyber warfare is the first stage of the cyber threat, many studies have been conducted on mehods for controlling the network traffic while scanning. In order to bypass this control of the network, information collectors prepare countermeasures to secretly collect port information. In this paper, we deal with a scanning method that can acquire information about opponents through network basic commands which are not important in the network control system.

      • KCI등재
      • SCOPUSKCI등재

        표면 마취제의 기능 향상을 위하여 개발된 Lipo-MLA(Liposome Encapsulated Mixed Local Anesthetics)의 평가

        박성식,한규석,백운이 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.40 No.3

        Background: This study investigated the effect of topical analgesic effects of a liposome encapsulated mixture of local anesthetics (lipo-MLA) compared with EMLA. Methods: 3% lipo-MLA (0.5% tetracaine base, 2.5% lidocaine base) and 5% lipo-MLA (1% tetracaine base, 4% lidocaine base) were encapsulated into liposomal vesicles made with egg yolk phosphatidy1-choline, cholesterol and phosphatidyldioleoyl. 3% lipo-MLA and EMLA were applied to volunteers' forearms bilaterally with and without an occlusive dressing. The topical anesthetic effects of the lipo-MLA and EMLA as a control were evaluated by the pinprick test in 28 adult volunteers after 60 minutes of application. The analgesic influence of the concentration of local anesthetics was also compared with 3% and 5% lipo-MLA under a non-occlusive dressing. Results: Analgesic effects of the 3% lipo-MLA were similar with EMLA under an occlusive dressing for 60 minutes. In addition, analgesic effects of the 3% lipo-MLA under a non-occlusive dressing were more potent than EMLA. Lipo-MLA under a non-occlusive dressing showed more potent analgesic effect than lipo-MLA under an occlusive dressing. 5% lipo-MLA was more potent than 3% lipo-MLA under a non-occlusive dressing. Conclusions: Lipo-MLA has more potent analgesic effects than EMLA without an occlusive dressing and 5% lipo-MLA is more potent than 3% lipo-MLA. Therefore, lipo-MLA appeared to be an impoved topical analgesic formulation which provides a more potent and convenient topical application. (Korean J Anesthesiol 2001; 40: 420~426)

      • SCOPUSKCI등재

        Vein of Galen 기형 환아에서 중재적 방사선하 혈관내 색전술시의 마취관리 경험

        박성식,임동건,한규석,홍정길,김용선 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.3

        Anesthetic Management during Interventional Neuroradiologic Embolization of a Vein of Galen Malformation - A case report - Kyu Seok Han, M.D., Sung Sik Park, M.D., Dong Gun Lim, M.D. Yong Sun Kim, M.D.^*, and Jung Gil Hong, M.D. Department of Anesthesiology and ^*Diagnostic Radiology, School of Medicine, Kyungpook National University, Daegu, Korea The vein of Galen malformation is a midline intracranial arteriovenous fistula with aneurysmal dilatation of the vein of Galen. This abnormality, though rare, is associated with a bleak prognosis and significant mortality. However, significant advancements have been made in understanding the path-ophysiology of this abnormality, and improvements in both interventional neuroradiologic embolization and microneurosurgical techniques have contributed to a better outcome. In neuroradiologic embolization, children are likely to become agitated and confused and thereby jeopardize the entire procedure. For this reason, this procedure is performed with the children under general anesthesia. We experienced a case of neuroradiologic embolization under general anesthesia with propofol. The patient was 9-year-old boy who weighed 29 kg. He was healthy and had no other abnormalities in our preoperative evaluation. Throughout the entire procedure, especially before and after closure of the fistula, hemo-dynamic changes and unexpected events did not appear. (Korean J Anesthesiol 2001; 41: 388~392)

      • KCI등재

        Trp-P-1 과 2-AF 에 대한 산채류 생즙의 항돌연변이 효과

        이해금,정의호,함승시,한규석 한국식품위생안전성학회 1992 한국식품위생안전성학회지 Vol.7 No.4

        On the mutagenicity induced by 3-amino-l,4-dimethyl-5-H-pyrido[4,3-b]indol (Trp-P-1) and 2-aminotluorene (2-AF), the antimutagenic effects of edible muntain herb juices were examined by the Ames assay using Salmornella typhimurium TA98 and TA100. Juices prepared from araria bud, small water dropwort, mugwort, roots of bellflower and sedum didn't have mutagenicity. Most of sample juices showed the antimutagenicity. Fspeaslly, juices Prepared from aralia bud, small water dropwort and mugwort were found to possess strong antimumgenic effects. Sedum was moderafly effective and root of bellflower had little effect on mutagenicity caused by Trp-P1 and 2-AF. The experimental results with TA98 were similar to those with TA100 in the antimutagenicity test of edible mountain hems juices. In this study, anlimutagenicity on Trp-P-1 was more effective than that on 2-AF.

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