SNMP Key의 문제점 해결을 위한 PKI 메커니즘 설계

노정희,박찬모,이정기,이광,이준 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2

최근 모자이크의 시대 이후 인터넷의 폭발적인 발달로 인해 Client-Sever의 방식의 네트웍 서비스 방식뿐만 아니라 P2P(Peer to Peer) 등 분산 서비스 환경이 각광을 받고 있다. 사용자의 직접적인 자료의 공유를 위해서는 Peer to Peer 환경을 설정하여 분산되어진 자료의 효과적인 관리를 위한 통신의 주체가 되는 각각의 에이젼트들 간의 통신과 Sever와 Agent의 통신에 있어 악의적인 침입에 의한 정보누출이 문제가 되고 있다. 본 논문에서는 이러한 문제의 해결방안으로 환경에 적합한 PKI(공개키 기반구조)를 기반을 이용하여 보안 메커니즘을 설계하였다. By greatly development of internet since age of mosaic recently, P2P (Peer to Peer) back breakup service environment as well as the network service way of Client-Sever's way is getting into the spotlight. Information leakage by invasion that is enemy of evil in communication of communications division Sever and Agent between each agents that become burden of communication for effective administration of become discrete data establishing Peer to Peer environment for share of direct data of user is becoming an issue. In environment by solution way of these problem in this treatise suitable PKI (PKI) using base security mechanism design.

벼, 콩 및 채소류에 대한 Mn-54, Co-60, Zn-65, Cs-137의 토양-작물체간 전이계수

박찬걸,조용우,최용호,김국찬,이창우,이강석,이정호 대한방사선 방어학회 1991 방사선방어학회지 Vol.16 No.2

벼, 콩, 상치, 당근, 호박의 가식부위에 대하여 몇가지 토양에 있어서 토양-작물체간 Mn-54, Co-60, Zn-65, Cs-137의 전이계수를 포트 재배에 의한 방사성 추적자 흡수실험을 통하여 조사하였다. 핵종간 전이계수는 거의 모든 경우 Zn-65>Mn-54>Cs-137>Co-60의 순이었다. 콩이 벼보다 전반적으로 한 자리 정도 높은 값을 보였고 채소류의 경우에는 대체로 상치에서 가장 높고 호박에서 가장 낮은 값을 보였다. 강산성 토양에서는 약산성 토양에서보다 전이계수가 훨씬 높았다. 본 조사결과에 입각하여 한국인의 섭식경로 피폭선량 평가에 이용하기 위한 각 핵종의 전이계수치가 작물별로 제안되었다. Soil-to plant transfer coefficients of Mn-54, Co-60, Zn-65 and Cs-137 were estimated for the edible parts of the rice, soybean, lettuce, carrot, and squash grown in different soils by radiotracer uptake experiments using pot cultures. The transfer coefficients of radionuclides were n the order of Zn-65>Mn-54>Cs-137>Co-60 in most of the cases studied. The coefficients for soybean were roughly and order of magnitude higher than those for rice. Among vegetables, lettuce mostly showed the highest value and squash, the lowest. In the strongly acidic soils. From the data obtained, crop-specific transfer coefficients of the four nuclides were proposed for the use in Korean food-radiation dose assessment.

지난 2년간의 학회지 "신경정신의학" 심사 평가보고

김찬형,김세주,김도관,김성곤,박원명,송동호,박용천,이영문,오강섭,정영철,이상열,김주한,이동영,이헌정,함병주,김율리,김문두,김정진,이강욱,천근아,김재진,홍진표,홍승철 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6

고요산혈증의 위험인자 : 아산시 지역 주민을 대상으로

김용배,장원기,황보영,김화성,안규동,이병국,이용진,이종은,이준숙,이찬구,이한정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

Objective : Serum uric acid has now been identified as a marker for a number of metabolic and hemodynamic abnormalities. The aim of this study is to evaluate risk factors which influence hyperuricemia in the citizens of Asan. Method : The study design was cross-sectional and research subjects were 1086 citizens of Asan. General characteristics, cigarette smoking, alcohol consumption, and past history were obtained by interview using a structural questionnaire. Also, we measured height, weight and blood pressure, and serum uric acid of the subjects. Results : The mean serum uric acid level was 5.27 ㎎/㎗ in men and 4.01 ㎎/㎗, in women, In the multiple logistic regression analysis, statically significant risk factors of hyperuhcemia were gender, body mass index, blood lead concentration, and serum creatinine. Conclusion : Our results suggest that gender, body mass index, blood lead concentration, and serum creatinine might be the most important risk factors of hyperurcemia. Education program as well as routine check-up for serum uric acid was highly recommended for the effective prevention of hyperuricemia.

뇌동맥류 파열로 인한 혈종에 관한 임상적 고찰

이기찬,이훈갑,주정화,김창선,최용일 대한신경외과학회 1982 Journal of Korean neurosurgical society Vol.11 No.1

The importance of hematoma associated with ruptured aneurysm has been discribed frequently. Hematomas may be intracisternal, intracerbral or subdural and intracerebral hematomas frequently rupture into the adjacent ventricle. The authors have analysed in clinically 33 cases of intracranial hematomas which developed as a consequence of 100 cases of ruptured intracranial aneurysms. Of 100 cases of ruptured intracranial aneurysms, the incidence of hematoma was 33%(33 cases). The most common site of aneurysm associated with hematoma was middle cerebral artery(50%) and anterior cerebral-anterior communicating artery in turn. Intracerebral hematomas are most common(20%), followed by intracerebral and intraventricular hematomas(5%). The incidence of subdural hematomas and intraventricular hematomas is 3% in each. There was no significant difference according to sex. The incidence of hematoma was considerably increased in 30-40 age group. The operative result in 33 cases who have hematomas was favorable (excellent good result) in 36.5%, and was unfavorable (fair-poor result) in 27.4%. The operative mortality was 36.4% and 7.5% in non-hematoma group. Cases of internal carotid artery aneurysms with hematoma carried the highest mortality and the next is anterior cerebral-anterior communicating artery aneurysms. There showed poor result in cases of preoperative grade Ⅳ & Ⅴ, either hematoma or non-hematoma groups. We also analysed the correlations between the frequency of hematoma and the vasospasm, hydrocephalus. Of 33 cases of ruptured aneurysm with hematoma, vasospasm was detected in 8 cases, hydrocephalus was in 6 cases and vasospasm, combined with hydrocephalus was 8 cases. It revealed a tendency of increased mortality in cases of hematoma with vasospasms.

사출성형제품의 런너시스템 설계 지식베이스화에 관한 연구

이찬우,허용정 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

본 논문은 사출성형제품의 런너시스템 설계를 합리적으로 수행하기 위해 사출금형설계전문가의 축적된 지식과 경험을 발췌 정리하여 지식베이스를 작성하였으며, 설계에 필요한 제품의 형상정보를 제공하기 위해 총칭형상과 특징형상 개념을 이용하여 특징형상을 정의하였다.또한 지식베이스를 통해 산출된 설계결과를 기하학적 모델러와의 인터페이스를 통해 3차원 형상으로 보여지도록 하였으며, 최종 생성된 3차원 기하학적 형상정보는 CAE 모듈이나 CAPP 모듈에서의 후속작업을 위해 제공될 수 있도록 구축되었다.

흙의 파괴시 체적변화 효과

정진섭,권영언,김찬기,이종천 圓光大學校 1993 論文集 Vol.27 No.2

본 연구는 흙이 파괴할 때 전단에 의하여 발생 하는 채적변화에 의한 응력을 보정하는 세개의 방정식을 유도하여 문헌상에서 얻은 시험결과에 적응하여 본 결과 Bishop의 에너지를 고려한 보정방법이 가장 합리적인 것으로 생각되어 Bishop의 방법을 선택하여, 흙이 항복 및 파괴 할 때에 채적변화에 대한 응력보정의 효과를 Poorooshasb모델과 Lade모델에서 검토하였다. 그 결과 전단할 때 채적변화에 대한 응력보정은 흙의 파괴상태를 합리적으로 나타내지 못한다는 사실을 알았다. The effect of volume change at failure and equations worked out to aollow for their contribution to the stresses. Two models for the failure and yield of soil are discussed in this paper and the effects of the corrections are considered in these models. The corrections for volume change do not produce a reasonable change in the stresses. They do not make the task of modeling the soil any simpler, and so not nessecery for consideration. The best method developed so far, describing the failure of the soil is Lade`s model. It describes the failure of the soil very well without volume correction. In fact when volume corrections are applied, the model no longer describes the failure. Poorooshasb`s model, though base on much consideration does not describe the true failure of the soil.

Expansin으로 형질전환 된 담배의 생장 특성

신하정, 성현정, 백승준, 김보미, 엄유리, 조은정, 정찬문, 이이 충북대학교 연초연구소 2008 煙草硏究 Vol.21 No.-

-본문참고-

뇌동맥류를 병발한 Moyamoya병 1예

이훈갑,조순구,이기찬,주정화 대한신경외과학회 1981 Journal of Korean neurosurgical society Vol.10 No.2

Moyamoya disease is a particular disease of the circle of Willis which is characterized by its progressive obstruction and associated with different cerebral vascular malformations and infrequently associated with aneurysms. A 23 year old Korean woman was admitted to the Department of Neurosurgery, Korea University Hospital, because of stuporous mentality and Rt. sided hemiplegia. She fell down and almost immediately lost consciousness on the day morning of admission. Neurological findings included neck stiffness, moderatelly bilateral dilated pupils, Rt. sided hemiplegia, positive bilateral Babinski's sign and positive Kernig's sign. Lumbar puncture revealed grossly bloody cerebrospinal fluid. Carotid angiogram revealed marked stenosis of supraclinoid portion of intracranial internal carotid arteries with extensive collateral small arterial net work at the base of the brain. Small aneurysmal sac was visualized at the distal end of the small arterial network probably distal portion of posterior choroidal artery. Brain computed tomograph showed hematoma at the posterior portion of left side thalamic area and in the left lateral ventricle. The patient had operation for removal of hematorna and died on the 2nd day of postoperation. Based on this case, mechanisms of formation cf aneurysms in moyamoya disease are discussed.

경직성 뇌성마비 환아에서 선택적 후근 절제술 후 운동기능의 변화

이소영,최인성,한재영,정주찬,위정선,오명신,박승진,이삼규,김재휴 全南大醫大 2001 전남의대학술지 Vol.37 No.1