• 한국멀티미디어학회:학술대회논문집
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• 한국멀티미디어학회 2003년도 추계학술발표대회(상)
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• pp.128-131
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• 2003

최근 인터넷을 대상으로 한 네트워크 공격의 공격 경향은 분산 환경에서 다수 공격자의 대규모 분산 서비스 거부 공격(DoS)의 출현 및 해외 해커들의 국내 전산망을 우회 루트로 활용한 사례의 증가 등 고도화된 불법 행위가 점차 벙죄의 강력한 수단으로 이용되는 추세에 있다. 본 논문은 기존 네트워크 노드기반의 침입탐지시스템에서 효율성과 사용자 편의성을 보완하기 위하여 자기 복제가 가능한 이동 에이전트를 적용하여 호스트 간 자율적인 이동을 통해 관리자에게 네트워크 모니터링을 제공하고 침입을 탐지하는 침입탐지시스템을 제안하였다.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.421.3-422
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• 2002

Carvedilol is a nonselective $\beta$-adrenoblocking agent with vasodilating activities. The pharmacokinetics and pharmacodynamics of carvedilol were studied in healthy volunteers following single oral administration. After oral administration of carvedilol 25mg. blood samples were collected for a period of 30 hours. Plasma concentrations of carvedilol were determined by HPLC with spectrofluorometric detection. The effects of carvedilol on systolic and diastolic blood pressure (BP) and heart rate (HR) were measured during the same period. (omitted)

• 한국사이버테러정보전학회:학술대회논문집
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• 한국사이버테러정보전학회 2004년도 제1회 춘계학술발표대회
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• pp.15-19
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• 2004

인터넷 사용이 보편화됨에 따라 기존의 방화벽만으로는 탐지가 불가능한 웹 서버의 취약점을 이용한 공격이 나날이 증가하고 있고, 그 중에서도 특히 웹 어플리케이션의 프로그래밍 오류를 이용한 침입이 공격 수단의 대부분을 차지하고 있다. 본 논문에서는 웹 어플리케이션의 취약점을 분석한 후 취약점 발생 부분에 대해 웹 서버 전용으로 로그 분석을 해 주는 실시간 에이전트를 도입하였다. 실시간 에이전트는 공격 패턴을 비교ㆍ분석한 후 프로세스 분석기를 통한 결정(decision) 과정을 통해 침입으로 판단되면 해당 접속 프로세스(pid)를 제거한 후 공격 아이피를 차단함으로서 침입을 탐지하는 모델을 제시한다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2007년도 가을 학술발표논문집 Vol.34 No.2 (A)
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• pp.114-115
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• 2007

• 한국산업보건학회지
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• 제25권1호
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• pp.82-88
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• 2015

Objectives: This study is designed to analyze the penetration performance into ceiling materials containing asbestos of scattering prevention agents and investigate the change in penetration depth and viscosity according to the dilution rate of anti-scattering agents diluted with distilled water. Methods: Five different types of scattering prevention agents were spread on plate-type asbestos ceiling materials. The penetration depth of each coated ceiling material was measured by energy dispersive spectroscopy (EDS) analysis, based on X-ray fluorescence (XRF) results of the non-coated ceiling materials. Test equipment installed the ceiling materials and 60 minutes were collected at a flow rate of $10{\ell}/min$ at a filter of 25 mm. Results: An EDS analysis of the cross-section of ceiling materials constructed with a scattering prevention agent revealed that potassium is detected in the process of penetrating hardener solidification and this element could be an indicator for infiltration. When anti-scattering agents with different viscosities were constructed and the penetration depth was analyzed by potassium detection assessment using EDS, the depth results with viscosities of 5.0, 2.5, and 1.9 cP were 98.5, 103, and $147{\mu}m$, respectively. Penetration performance improved with decrease in viscosity. Conclusions: For asbestos ceiling materials, it is concluded that a higher dilution rate of the scattering prevention agent leads to lower viscosity, and hence a deeper penetration depth from $156{\mu}m$ to 3 mm. The asbestos anti-scattering properties according to the penetration depth will be confirmed through further study.

• 대한수의학회지
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• 제18권2호
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• pp.61-67
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• 1978

The detection of Bordetella bronchiseptica which is supposed to be an agent of the infectious atrophic rhinitis of swine, is likely to receive more attention in the future as the pork industry comes to realize that eradication of this infection from breeding herds is a practical possibility. Experiments described here were carried out to establish the rapid plate agglutination test for the detection of the infectious atrophic rhinitis of swine in the field using the criteria of antigen preparation, effects on the antigenecity after storing of the antigen and reaction appearing time. Also, the agglutinabilities between the plate and tube method were compared and the degree of pathological lesions were recorded in relation to tube agglutination titers. Obtained results were as follows: 1. No differences were noted in the agglutinabilities on the plate agglutination test between the treatments in antigen preparation-formolized, merthiolate-killed and living organism. 2. The agglutinability of the antigens did not show any significant changes until 10 weeks of storage at 4 C; however, after 10 weeks of storage, non-specific reaction was observed with the HPCD control sera. 3. The results of the plate and tube agglutination tests were not comparable but the effective use of the plate method in Bordetella bronchiseptica eradication programs in pigs especially in the sow is stressed as a screening test.

• Parasites, Hosts and Diseases
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• 제47권3호
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• pp.303-305
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• 2009

The incidence and etiology of parasite-associated gastroenteritis during 2004-2006 in Gyeonggi-do (province), South Korea was determined by means of antigen detection ELISA on 6,071 stool specimens collected from 6 general hospitals. At least 1 parasitic agent was detected in 3.4% (208/6,071) of the stool samples. Among these, Giardia lamblia was the most numerous (152 cases; 2.5%), followed by Entamoeba histolytica (25 cases; 0.4%), Cryptosporidium parvum (23 cases; 0.4%), and mixed infections (8 cases; 0.1%). Patients aged 1-5years had the largest proportion (69.2%; 144/208) of parasite-positive stool specimens. Parasite-mediated gastroenteritis was most common from June to September. The detection rate gradually increased from 2004 to 2006. This study shows that parasite-mediated gastroenteritis may be significant among children in Korea and that parasite infection surveillance should be constantly performed.

• Journal of Microbiology and Biotechnology
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• 제18권9호
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• pp.1492-1495
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• 2008

Successful control of Xanthomonas oryzae pv. oryzicola, the causal agent of bacterial leaf streak, requires a specific and reliable diagnostic tool. A pathovar-specific PCR assay was developed for the rapid and accurate detection ofthe plant pathogenic bacterium Xanthomonas oryzae pv. oryzicola in diseased plant. Based on differences in a membrane fusion protein gene of Xanthomonas oryzae pv. oryzicola and other microorganisms, which was generated from NCBI (http://www.ncbi.nlm.nih.gov/) and CMR (http://cmr.tigr.org/) BLAST searches, one pair of pathovar-specific primers, XOCMF/XOCMR, was synthesized. Primers XOCMF and XOCMR from a membrane fusion protein gene were used to amplity a 488-bp DNA fragment. The PCR product was only produced from 4 isolates of Xanthomonas oryzae pv. oryzicola among 37 isolates of other pathovars and species of Xanthomonas, Pectobacterium, Pseudomonas, Burkholderia, Escherichia coli, and Fusarium oxysporum f.sp. dianthi. The results suggested that the assay detected the pathogen more rapidly and accurately than standard isolation methods.

• 한국가스학회지
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• 제1권1호
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• pp.113-119
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• 1997

UV 화염감기의 분진분위기에서의 성능저하를 고찰하기 위하여 세제분말, 탄진 및 분말 소화약제의 분진운을 형성하였고 LPG 및 가솔린 화염을 사용하여 UV 화염감지기의 감지성능을 고찰하였다. 분진 분위기 하에서의 UV 화염감지기의 성능을 분진의 농도와 분진층의 거리가 증가함에 따라 뚜렷한 증가를 보였으며, 분진의 화학적, 물리적 특성에 커다란 영향을 받았다. 따라서 UV 화염감지기를 분진 분위기에서 사용한 경우 특별한 주의를 기울일 필요가 있는 것으로 사려된다.

• 한국군사과학기술학회지
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• 제18권5호
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• pp.612-620
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• 2015

Short-range detection of chemical agents deposited on ground surface using a standoff Raman system employing a pulsed laser at 248 nm is described. Mounted in a vehicle such as an NBC reconnaissance vehicle, the system is protected against toxic chemicals. As most chemicals including chemical warfare agents have unique Raman spectra, the spectra can be used for detecting toxic chemicals contaminated on the ground. This article describes the design of the Raman spectroscopic system and its performance on several chemicals contaminated on asphalt, concrete, sand, etc.