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석병석(Suk, Byong-suk),민승용(Min, Seung-yong),권재욱(Kwon, Jae-wook),김창균(Kim, Chang-kyoon),문상만(Moon, Sang-man),최수진(Choi, Su-jin),구철회(Koo, Cheol-hea),김인규(Kim, In-kyu),류동영(Ryu, Dong-young) 한국항공우주연구원 2015 항공우주산업기술동향 Vol.13 No.2
시험용 달 궤도선의 발사 요구조건 사전 분석 단계로 최근 외국에서 발사한 달 탐사선의 발사 요구조건을 분석하였다. 일반적으로 달 탐사선의 발사 요구조건은 달 임무 궤도를 결정하는 중요한 요소이며, 또한 지구, 달, 태양의 상대적인 운동으로 인해 임무궤도 요구조건을 만족하는 발사 가능 시간이 주기적으로 반복되는 경향이 있다. 분석 결과 설정된 발사 요구조건들로부터 달 궤도선의 주 임무가 달의 남/북극 지역의 광학 관측 임을 간접적으로 알 수 있었다. 향후 우리나라 달 궤도선 발사 요구 조건 설정에 본 논문이 도움이 되길 기대한다. In the preliminary study on launch window requirement for Korea Path-finder Lunar Orbiter(KPLO), the recent foreign lunar orbiter’s lauch window requirement was analyzed. Normally, the launch requirements depends on the mission orbit. Based on the relationship between Moon, Earth, and Sun, the launch time will be available periodically to meet requirements. In this paper, it is understood that the launch window requirements come from payload mission requirements to take picture each poles of Moon. This paper might be a practical example to derive KPLO launch requirements in the future.
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3차원 뇌자기공명영상을 이용한 강박증의 뇌형태학적 연구
공석원,송인창,한문희,장기현,류인균,권준수 대한신경정신의학회 2000 신경정신의학 Vol.39 No.6
연구 목적 : 강박증의 생물학적 원인으로 전두엽-선조체 회로의 이상이 알려져 있다. 그러나 형태학적 뇌영상을 이용한 기존의 연구는 전두엽과 미상핵의 용적 변화에 대한 일관된 결과가 없었다. 따라서 본 연구에서는 선형변환을 통한 반자동화된 방법을 이용하여 뇌의 각부위에 대한 형태학적 연구를 위하여 시행되었다. 방 법 : DSM-IV의 기준에 의해 진단한 13명의 강박증 환자와 9명의 정상대조군을 대상으로 하였다. 3차원 뇌자기공명영상을 Spoiled gradient-recalled(SPGR)법으로 얻었다. 3차원으로 재구성된 뇌자기공명영상을 Talairach와 Tournoux의 표준화 좌표에 공간적 정위시킨 후 회질과 백직을 반자동화된 방법으로 분리하였다. 죄표에 의거한 뇌엽의 각 부위에 대한 용적 측정을 하고, 미상핵은 수기로 구획한 후 용적측정을 하였다. 전두엽은 Brodman 의 영역에 의거하여 좌표계에 따른 분할을 하여 배외측전두엽, 안와전두엽, 내측전두엽으로 분할 구획하여 용적을 측정하였다. 결 과 : 강박증군에서 전두엽 회질의 용적이 증가되는 경향을 나타내었다. 다른 부위의 회질과 백질 그리고 미상핵의 용적은 차이가 없었다. 편측성에 의한 차이도 없었으며, 임상적 심각도와 상관관계는 관찰되지 않았다. 결 론 : 본 연구에서는 강박증군에서 전두엽의 용적 증가를 관찰할 수 있었으며, 이것은 기존 연구 중 일부에서 전두엽과 미상핵의 용적 감소를 보고했던 것과 차이가 있다. 강박증이 만성화되고 일정기간 이상이지나 구조적 변화가 오기 전까지 오히려 대사와 혈류 증가에 따른 회질 용적 증가가 관찰되는 것이라 생각된다. Objectives: Neurobiological models for obsessive-compulsive disorder(OCD) have consistently Implicated prefrontal-striatal circuits in the pathophysiology of this disorder. But, prior studies have inconsistently found alteration in caudate and frontal lobe volumes in patients with OCD. This study was undertaken in the hope that semi-automated linear transformation methods would elucidate the morphometric differences of various parts of brain between OCD and normal control group. Methods : Thirteen parients meeting the DSM-IV criteria fro OCD, and 9 psychiatrically normal comparison subjects participated in the study. 3-D brain MRIs using Spoiled gradient-recalled(SPGR) sequence were acquired for each subjects. After spatially normalized according to Talairach and Tournoux's coordinates, the gray and white matters were segmented by semi-automated methods using fuzzy algorithm. Each lobal volumes was measured according to Talairach and Tournoux's coordinates, and the region of interests of caudate nuclei was manually traced. The frontal lobe was divided into 3 subregions ; dorsolateral prefrontal cortex, orbital frontal cortex, mesial frontal cortex accoring to the coordinates and Broadman's cytoarchitectonics. Results : Only the volume of left and right frontal gray matter showed a significant difference between OCD and normal subjects. In OCD, the frontal gray matter volume was increased in tendency. There's no difference in laterality and no coorelation with clinical severities. Conclusion : Findings of increased frontal gray matter volumes in patients implicate a structural abnormality of these brain regions in the pathophysiology of OCD. The increased frontl gray matter volumes reflect a epiphenomena due to increased cerebral blood flows and metabolic rates before the structural changes may occur.
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이문균(Moon Kyoon Lee) 한국기독교학회 2001 한국기독교신학논총 Vol.20 No.-
By recovering a imagination within the story of God we wanted to find mystery of God`s life, and to understand human being. We sought to understand what it means to be human in the context of our primal relationship with triune God. Christian theologians have constructed anthropology upon the concept of the imago dei. To be a person is to he made in the image of God. But exactly speaking, to be a person is to be made in the image of triune God. So becoming human can he understood as imago Trinitatis. In this perspective we tried to develop the understanding of human being from the trinitarian theology. We sought to understand what triune God means before trying to understand what human being means. Personhood, not substance, is the ultimate ontological category. Personhood is not some quality added onto being, it is constitutive of being. The being of God is identified with the person. We believe God the person. But what does it mean `God the person.` In our society personhood is reduced to self-consciousness and individuality. But that is misunderstanding. The identity and unique reality of a person emerges in relation to another person. The very essence of God is tobe-Persons -in-Communion. So a trinitarian ontology of person is incompatible with the notion of person as individuated, autonomous, and self-sufficient self. Just as God exists in communion, so human beings exist only in and through relation with God, other human persons, and the created world. Since God`s life is in communion, God`s life for us is relational, the human person is measured in terms of full participation in personal communion with another and with God. To be a person is to be open toward communion, like the triune God. The destiny of human being is to participate the perichoretic dance of triune God. We proposed reimaging human being from the perspective of reimaging God, triune God, God the person-in-relation.
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이문균(Moon Kyoon Lee) 한국기독교학회 2002 한국기독교신학논총 Vol.23 No.-
The Christian mission is a work realizing God`s concern of salvation in the world. So we expect that the understanding of mission is closely related to the understanding of salvation. Traditionally Eastern Orthodox Church understands salvation in relation to the doctrine of the Trinity. In their tradition salvation is participation in life and love of Triune God. Salvation will be completed in the achievement of deification of human being. Deification means being conformed in our personal existence to God` s personal existence, achieving right relationship with God. Deification can be possible because of the triune God, who is embracing the other. The incarnation and the resurrection of Jesus Christ is the event that shows the basis and goal of the salvation of human being. Christification is the ontological foundation of salvation(deification) as well as the goal of mission. Holy Spirit is the principle of union and communion. The Spirit santify human being and enable human being to become Christification. To be Christification, christians should be in the church and assisted by sacraments of the church. We can summarize the understanding of Eastern Orthodox Church on salvation and mission as follow: 1. Salvation and mission is grounded in person and mode of triune God. And the goal for salvation and the mission is the restoration of communion between God and human being. 2. Eastern Orthodox church believes the salvation is realized by church itself rather than saving each individual person. The mission is not a specialized activity of the missionary. The church itself is and realize the mission in the world. Even though Eastern Orthodox church has good insights on salvation and mission, they have not developed effective mission theory and practice in the world. The reasons are as follow: 1. Being concentrated on orthodox doctrine of early church, Eastern Orthodox Church became static and introverted. Therefore they were not motivated to renew the church and theology in the world. 2. Eastern Orthodox Church believes that the mission is realized by church itself. It weakened the motivation of mission to the other culture and non-believers. 3. As Eastern Orthodox Church has close connection with the state, they didn`t try to change the world in which they live. The church couldn`t develop the theology of `missio Dei.`
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