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박장수,안병철,Park, Jang-Su,Ahn, Byoung-Chul 한국정보처리학회 2008 정보처리학회논문지 C : 정보통신,정보보안 Vol.15 No.4
It is not enough to reduce damages of computer systems by just patching vulnerability codes after incidents occur. It is necessary to detect and block intrusions by boosting the durability of systems even if there are vulnerable codes in systems. This paper proposes a robust real-time intrusion detection method by monitoring root privileged processes instead of system administrators in Linux systems. This method saves IP addresses of users in the process table and monitors IP addresses of every root privileged process. The proposed method is verified to protect vulnerable programs against the buffer overflow by using KON program. A configuration protocol is proposed to manage systems remotely and host IP addresses are protected from intrusions safely through this protocol. 보안 침입 사건이 있은 후 해당되는 취약점만을 패치시키는 방식으로만 침입 피해를 줄이는 것은 충분하지 않다. 시스템 내에 취약한 코드가 있더라도 시스템의 내구성을 높여 보다 포괄적으로 침입을 막을 수 있는 방법이 필요하다. 본 논문은 리눅스 시스템에서 관리자를 대신하여 root 권한을 가진 프로세스를 감시하는 강건한 실시간 침입탐지기법을 제시한다. 이 기법은 사용자IP 주소를 프로세스 테이블에 추가하고 root 권한으로 기동되는 모든 프로세스의 IP 주소를 감시한다. 제안한 기법이 버퍼 오버 플로우 취약성에 대해 방어하는 것을 KON 프로그램을 통해 확인한다. 또한 원격으로 시스템을 관리할 수 있는 설정 프로토콜을 제안하며, 이 프로토콜을 통해 관리자 호스트의 IP주소가 침입으로부터 안전하게 보호될 수 있다.
박장수,이임영 순천향대학교 부설 산업기술연구소 2015 순천향 산업기술연구소논문집 Vol.21 No.1
Recently, internal threats are increasing. Such data leakage cases have an adverse effect not only on a company's assets but also on its reputation. To prevent these losses, organizations and companies have built and run various security solutions. Also, a number of companies and organizations, collecting all logs gathered by security solutions and send them to a central storage to monitor for surveillance of data leakage, is increasing. However, the log collection is just like putting ocher security solution into security systems. It doesn't provide reliable detection to data leakage for them. In other words, what important thing of monitoring system to prevent the data leakage fr이n the internals is to establish a policy of reliable detection. Therefore, this paper studies data leakage scenario has wide applicability and is based on insider threat to monitoring inside data leakage prevention.
제왕절개술 산모에 있어서 경막외강내 몰핀 단독 투여시와 몰핀-클로니딘 병용시 수술후 통증 조절 효과에 대한 연구
박장수,김정원,문순홍,신동엽,홍기혁 인제대학교 1994 仁濟醫學 Vol.15 No.4
제왕절개술을 받은 산모의 술후 통증 조절을 위하여 경막외강내로 몰핀을 투여하여 좋은 통증 조절 효과를 거두고 있으나, 오심, 구토, 소양증, 요저류, 호흡 억제 등의 부작용이 있어 사용상 제한점이 되어왔다. 본 연구에서 저자들은 경막외강내로 진통효과를 가진 클로니딘을 몰핀과 병용하여 투여한 결과 몰핀의 투여량을 줄임으로써 몰핀에 대한 부작용의 발현을 감소시키고 우수한 통증 조절 효과를 거둘 수 있었다. Clonidine has been known to have analgesic effect, when it was especially given epidurally and intrathecally. So clonidine can be an alternative to morphine for patients witty chronicpain severe side effects from morphine. We gave bolus of 600 microgram of clonidine and continuous infusion of morphine 4 milligram and clonidine 960 microgram for 48 hours to 20 cesarean sectioned females postoperatively via epidural catheter. Compared with epidural morphine alone, clonidine bolus and continuous morphine mixed with clonidine has rapid onset of analgesic effect and far less side effects such as pruritus, nausea and vomiting. But clonidine can cause severe hypotension and bradycardia, so careful titreation of dosage and post infusion close monitoring are required.
박장수,김정원,문순홍,신동엽,홍기혁 인제대학교 1994 仁濟醫學 Vol.15 No.3
경막외 마취는 마취과영역에서 부위마취의 큰 비중을 차지하고 있으며 경막외 마취시 발생하는 합병증중에서 경막하 신경차단내지는 지주막하 신경차단은 때때로 환자의 생명징후와 의식상태에 심각한 변화를 초래할 수 있기 때문에 경막외 마취시 세심한 주의와 관찰이 필요하다. 저자들은 자궁전절제술을 시행받던 65세 환자에서 발생한 우발적 경막하 신경차단을 경험하였기에 문헌고찰과 함께 보고하는 바이다. Dural puncture is a well recognized complication of lumbar eqidural anesthesia causing extensive block after extradural injection of local anesthetic solutions in patients whose dura has been punctured. A somewhat obese 64 year old woman underwent transvaginal hysterectomy under lumber epidural anesthesia. After the first injection of 0.5% bupivacaine 60mg, an extensive block with hypotension developed. Such an extensive anesthesia thought be cased by leakage of anesthetic agent into the subdural space.
청각장애평가지수 사용에 있어서 터치스크린과 설문지 유형 비교
박장수,방정화 한국청각언어재활학회 2012 Audiology and Speech Research Vol.8 No.1
The purpose of the study was to compare the scores of Korean Evaluation Scale Hearing Handicap (KESHH) between touch-screen version (sKESHH) and paper-and-pencil version (pKESHH) questionnaires. Total 95 hearing impared listeners participated and their average age was 69.7 years old. The Group A completed the sKESHH and then did the pKESHH in 7-15 days. The Group B conducted in the reverse order. The completion time were measured. Also preference version of questionnaire was asked. Results showed that two versions of the questionnaire scores were not significantly different. Completion time of versions were not significantly different. The degree of completion was 100% in sKESHH, but it was 87% in pKESHH. The findings herein demonstrated that computerized touch-screen could be helpful to hearing professionals for collecting, assessing, and analyzing data of level of hearing loss for their patients in clinical practices.