고등급 보안 시스템을 위한 IPSec 시스템 기능 명세

유희준,김영미,최진영,서동수,노병규 고려대학교 컴퓨터과학기술연구소 2001 JOURNAL OF COMPUTER SCIENCE & ENGINEERING TECHNOLO Vol.3 No.-

현대 사회는 인터넷 사용자의 증가와 제반 기술의 비약적인 발전으로 사회활동 전반에 대한 인터넷 기반 서비스가 이루어지고 있다. 이런 과정에서 발생한 중요한 문제중의 하나가 불특정 다수가 자유로이 통신을 하기 위해 개발된 인터넷상에서 사용자의 보안을 보장해주는 것이다. 최근에 와서 인터넷상에서 개인 정보유출로 인한 많은 피해가 발생하면서 정보보호에 대한 관심이 더욱 증가하고 있다. 현재 이 문제를 해결하기 위하여 많은 보안 관련 시스템들이 개발되고 있으며, 세계 각 국의 표준 기구에서는 이러한 시스템에 대한 등급을 평가하고 있다. 각 등급을 살펴보면, 시스템 개발 초기부터 정형기법을 이용하여 개발되어진 시스템들이 고등급을 획득하고 있다. 국내에서도 한국정보보호센터(KISA)에서 보안 시스템에 대한 등급을 평가를 수행하면서 정형기법을 이용하여 땅세 검증된 시스템에게 K5이상의 고등급을 부여하고 있다. 이러한 등급을 살펴보면, 시스템의 기능을 정형명세언어를 이용해서 명세하는 부분을 공통적으로 요구하고 있다. 본 논문에서는 높은 보안 등급의 IPSec 관련 시스템을 개발하기 위해서 정형명세언어인 Z를 이용해서 IPSec의 동작을 명세하였다. The modern community is moving across the whole areas based on Internet with the growing Internet users and the great technological development. One of the important things that can be problem in this community is that the Internet should assure secure networking and security mechanism for the many security-ignorant users. Recently, Due to a lot of damages like a personal drain, security concerns is growing very rapidly. Now, many security application system is developing to solve this problem and each of the world standard organizations is evaluating these security application systems. Considering the each levels, we found that system using formal methods from the initial system development process acquired the high-level. In domestic, KISA manages the evaluation of security system and gives the higher than K5 to the system that specified and verified using formal methods. In this all levels, it should be required the system specification part. In this paper, we specified IPSec using formal specification language Z to develope the high-level IPSec system.

흰쥐 뇌줄기에 분포하는 Nitric Oxide Synthase 신경세포에 관한 면역조직화학적 연구

나준희,허영범,박찬,김정혜,유진화,안희경,이원규 대한해부학회 1999 Anatomy & Cell Biology Vol.32 No.2

대퇴 원위부 골격근내 혈관종 1예

김희상,김학준,안경희,윤동환,유승돈 경희대학교 2003 慶熙醫學 Vol.19 No.2

척수압박으로 발현된 급성 골수성 백혈병에 동반된 과립구성 육종 1 례

윤상준,김영곤,김희종,박유환,정춘해,김양수,김태균,박영진,전호종 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1

저자들은 척수압박으로 하지마비를 보인 환자에서 수술 후에 급성 백혈병에 동반된 과립구성 육종으로 진단된 환자 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Granulocytic sarcoma(GS) is an uncommon tumor composed of immature cells of the granulocytic series. Most case of GS occur in the course of acute leukemia and the blast crisis of chronic leukemia, Rarely, however, it may present before leukemia becomes clinically apparent. It may also occur in patients with myeloproliferative disoders. GS has been reported that it occurs in 3% to 9% of patients with acute myelogenous leukemia(AML) and the incidence of GS is reported to be higher in patients with t(8;21). GS occurs relatively commonly in africa and has been reported to affect 10-25% of black children presenting with AML. This is very rare case of granulocytic sarcoma with AML(FAB M5) presented with spinal cord compression which was supported by decompression laminectomy.

뇌성마비아의 모발내 중금속 함량 분석

안경희,김희상,유창현,윤동환,홍장혁,유승돈,이준원 경희대학교 2001 慶熙醫學 Vol.17 No.1

下水處理 方法選定에 관한 硏究

高英豪,金勇熙,全裕燦 慶南大學校 附設 工業技術硏究所 1987 硏究論文集 Vol.5 No.-

본 연구는 하수 처리방법에 있어 각 처리방법별, 처리수량별 부지 면적과 건설비, 유지 관리비에 대한 보다 효율적이고 경제적인 하수 처리방법 선정에 도움이 되고자 함이 본 연구의 목적이다. 결론을 요약하면 다음과 같다. 1. 부지 면적의 경우, 생물막여과법이 처리수량에 관계없이 타 방법에 비해 가장 경제적이다. 2. 건설비의 경우, 처리수량이 500m³/day에서는 산화구법, 회전원판법, 생물막여과법이 경제적이고, 생물막여과법의 경제적 처리 범위는 5,000m³/day이하이다. 3. 유지관리비의 경우, 표준 활성오니법에 비해 회분식 활성 오니법, 접촉 폭기법, 생물막여과법이 유지 관리에 유리하며, 8,000m³/day 경우 접촉 폭기법이 가장 유리하다. This study is aimed at finding efficient sewage treatment method of various systems and capacities, areas for sewage treatment, construction costs, maintenance costs. Conclusions are followed as below; 1. In the case of area for sewage treatment, biological aerated filter system is concluded as economical method. 2. In the case of construction cost, 500m³/day treatment amount, oxidation ditch process, rotating biological contactors, biological aerated filter system are regarded as efficient method. 3. In the case of maintenance cost, sequencing batch reactors, submerged filter process, biological aerated filter system require less cost than conventional activated sludge process.

주정 의존 환자의 충동성 및 스트레스 내인력

남궁기,이희상,전종호,현명호,천덕희,유계준 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.3

충동성과 스트레스는 주정 의존의 원인, 증상 혹은 위험 요인이나 재발 요인으로서 논란의 대상이 되고 있으나, 현재까지 국내에서는 이에 관한 연구가 없다. 따라서 만일 주정 의존의 원인 및 재발 요인으로 생각되는 충동성과 스트레스 내인력이 주정 의존 환자군과 대조군 사이에 의미 있는 차이가 나타난다면 주정 의존의 치료에 있어서도 충동성을 낮추고 스트레스 내인력을 증가시키는데 초점을 두는 새로운 사회 기술 훈련 방법 등을 고안 적용함으로써, 보다 효과적인 치료를 제공할 수 있을 것으로 생각된다. 이러한 배경에서 본 연구가 계획되었다. 이에 본 연구의 목적은 국내 주정 의존 환자군을 대상으로 하여 주정 의존 환자군은 대조군에 비해 충동성의 경향이 유의하게 높을 것이고, 스트레스 내인력이 유의하게 떨어질 것이라는 가설을 검정하므로써, 주정 의존군과 대조군 사이에서 충동성과 스트레스 내인력에 어떤 차이가 있는 지를 알아보는 것이다. 본 연구에서는 29명의 주정 의존 환자군과 29명의 대조군을 연구 대상으로 하였다. 충동성을 측정하기 위해서 충동성 척도(impulsivity scale)와 인식력 검사(Cognitrone test)를 사용하였다. 연구 결과 충동성 척도 검사에서 주정 의존군은 전체 충동성 및 무계획 충동성과 운동 충동성이 대조군에 비해 통계적으로 유의하게 높았다(p<0.05). 인식력 검사에서는 주정 의존군이 대조군에 비해 틀린 문항 수가 통계적으로 유의하게 많았는데(p<0.05) 이는 주정 의존군의 충동성이 높음을 시사한다. 운동 결정력 검사의 소검사-3에서 주정의존군이 대조군에 비해 시간 내에 반응한 옳은 반응의 수가 통계적으로 유의하게 적었으며(p<0.05), 이는 주정 의존군의 스트레스 내인력이 떨어짐을 시사한다. 이러한 본 연구의 결과는 주정 의존 환자가 정상인에 비해 충동성이 높고, 스트레스 내인력이 떨어진다는 기존의 연구 결과들과 일치한다. 이러한 결과들을 통해 볼 때 주정 의존 환자의 치료와 예후의 판단 및 치료 효과의 평가에 충동성과 스트레스 내인력을 그 지표로 사용할 수 있을 것이다. This study was attempted to make a comparison of the impulsivity and the stress tolerance between patients with alcohol dependence(alcoholic group) and control subjects(control group). The author examined 29 alcoholics and 29 control subjects by the impulsivity scale, Cognitrone test and Determination Unit test. The results were summarized as follows : The scores of IMPM(impulsivity-motor), IMPP(impulsivity-nonplanning) and IMP(impulsivity-total score) were significantly higher in alcoholic group than in control group(10.00±5.43 vs 6.38±4.84, t=2.56, d.f.=51, p<0.05 ; 15.22±6.68 vs 10.77±5.87, t=2.53, d.f.=51 p<0.05 ; 36.67±13.20 vs 27.12±11.73, t=2.78, d.f.=51, p<0.05). The number of incorrect responses(Incorrect) of the Cognitrone test was significantly higher in alcoholic group than in control group(25.52±13.26 vs 17.83±7.30, t=2.47, d.f.=43.53, p<0.05 in Student t-test). The number of timely right responses of the Determination Unit test, subset-3 was significantly lower in alcoholic group than in control group(62.79±43.13 vs 90.79±52.02, t=-2.23, d.f.=56, p<0.05 in Student t-test). These results mean that the impulsivity is higher and the stress tolerance is lower in alcoholic group than in control group. With these results, the impulsivity and the stress tolerance in alcoholic patients can be used as indicator of their treatment efficacy and prognosis.

3개 대학병원의 주 진단 코딩사례 평가

서순원,김광환,부유경,서진숙,서정돈,윤석준,이영성,이무식,정희웅 한국의료QA학회 2002 한국의료질향상학회지 Vol.9 No.1

Background : Coding of principal diagnosis is essential component for producing reliable health statistics. We performed this study to evaluate the current practice of principal diagnoses determination and coding, and to give some basic data to improve coding of principal diagnosis. Method : Nineteen medical record administrators(MRAs) of 3 university hospitals participated in coding principal Dx. From August 1, 2001 to August 31, 2001. From each hospital, 10 medical records of patients with high frequency disease were selected randomly. Each 10 medical records were grouped into three(A,B,C). Then, these 30 medical records were given to each MRAs for coding. At the same time questionnaire was given to each of them. Questions were to prove how they decide and code the principal diagnosis among many current diagnoses ; how they decide and code the principal diagnosis when day see irrelevant diagnosis recorded as the principal diagnosis in medical record, when only tentative diagnoses were recorded without final diagnosis, and when different diagnoses were recorded in different sheets of same record. Agreement of coding among 3 hospitals were compared and survey results were analysed with SAS 6.12. Results : Agreement of coding was found in medical records 5-6 of each 10 medical records. Causes of disagreement were as follows. Difference of clinician’s opinion from each hospital; mixed use of guideline from KCD-3 and guideline from DRG; difference in 4th digit classification according to the absence of pathology report in the medical record; difference of abbreviations among hospitals. 57.9% of decided principal diagnosis after consulting to KCD-3 guideline. When there were difficulties in determining the principal diagnosis, 42.1% of MRAs decided principal diagnosis after discussion with the physician, 26.3% after discussion with fellow MRAs. Conclusion : There were differences in coding among hospitals. To minimize the difference, we suggest the development of disease-specific guidelines for coding in addition to the current general guideline such as KCD-3. To do this, Coding Clinic which can produce guidelines is needed.

주의력결핍과잉행동장애와 Alpha-1C-Adrenergic 수용체 유전자와의 연관성에 대한 연구

조수철,김재원,김붕년,황준원,박미라,김순애,조대연,유희정,정운선,손정우,박태원 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.1

Objectives : Neurobiological and pharmacological research has suggested that the dysregulation of the central noradrenergic systems might be involved in the pathophysiology of ADHD. The aim of this study was to examine the association of the alpha-1C-adrenergic receptor gene (ADRA1C) with ADHD in Korean subjects. Methods : In a case-control study, we assessed 186 DSM-IV ADHD probands and 150 normal controls. One hundred and eight trios were studied in a family-based association analysis. Psychiatric diagnoses were derived through structured diagnostic interviews. For the clinical evaluation of the ADHD subjects, the Child Behavior Checklist (CBCL), the ADHD Rating Scale-IV (ARS) and the Junior Temperament and Character Inventory (JTCI) were administered. A computerized continuous performance test (CPT) was used to measure the inattention and impulsivity of the ADHD children. Results : There were no significant differences in the genotype or allele frequencies of the ADRA1C PstI polymorphism between the ADHD and control group (p>0.05). The transmission disequilibrium test (TDT) analysis observed no evidence for biased transmission of any of the alleles of the PstI polymorphism. There were no significant differences in the CPT or JTCI profiles between those ADHD subjects with the CC genotype and those with the other (CT+TT) genotypes at the PstI polymorphism. Conclusion : The results of this study do not support the ADRA1C as a major genetic susceptibility factor in ADHD.

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.