랜덤포레스트를 이용한 낙동강 본류의 남조류 발생 영향인자 분석

정우석(Jung, Woo Suk),김성은(Kim, Sung Eun),김영도(Kim, Young Do) 한국습지학회 2021 한국습지학회지 Vol.23 No.1

본 연구에서는 랜덤포레스트를 이용하여 8개 보 지점별 남조류 발생 주요 영향인자를 도출하고, 조류경보제 기반의범주형 예측모델을 개발하였다. 8개 보 지점의 랜덤포레스트의 변수 중요도를 살펴본 결과, 상류의 보 지점들은 남조류 발생에 있어 보 운영에 따른 영향을 직접적으로 받는 것으로 나타났다. 이는 효율적인 보 운영을 통한 남조류 관리가 가능할 수 있다는 것을 의미한다. 중류 구간은 DO와 E.C가 주요 영향인자로 도출되었다. 공간적으로 구미와 김천에 대규모 산업공단들이 밀집되어 있으며, 환경기초시설의 배출량이 큰 영향을 끼치는 구간이다. 따라서 폭염 및 가뭄 시기에 중류 유역에서 배출되는 환경기초시설의 방류는 본류의 E.C를 증가하게 하고 남조류 발생을 촉진 시키는것으로 나타났다. 중·하류에 위치한 보 지점들은 폭염 및 가뭄의 영향을 가장 많이 받는 지역으로 여름철 가뭄에 따른남조류 대발생에 대비하여 선제적인 관리가 필요한 지점으로 나타났다. 본 연구를 통해 지점별 남조류 발생 영향인자를 도출하였으며, 맞춤형 조류관리를 위한 정책적 의사결정의 기초자료로 제공될 수 있을 것으로 판단된다. In this study, the main influencing factors of the occurrence of cyanobacteria at each of the eight Multifunctional weirs were derived using a random forest, and a categorical prediction model based on a Algal bloom warning system was developed. As a result of examining the importance of variables in the random forest, it was found that the upstream points were directly affected by weir operation during the occurrence of cyanobacteria. This means that cyanobacteria can be managed through efficient security management. DO and E.C were indicated as major influencers in midstream. The midstream section is a section where large-scale industrial complexes such as Gumi and Gimcheon are concentrated as well as the emissions of basic environmental facilities have a great influence. During the period of heatwave and drought, E.C increases along with the discharge of environmental facilities discharged from the basin, which promotes the outbreak of cyanobacteria. Those monitoring sites located in the middle and lower streams are areas that are most affected by heat waves and droughts, and therefore require preemptive management in preparation for the outbreak of cyanobacteria caused by drought in summer. Through this study, the characteristics of cyanobacteria at each point were analyzed. It can provide basic data for policy decision-making for customized cyanobacteria management

심한 말 실행증으로만 나타난 좌측 중심고랑주변부 급성 뇌경색

김영도(Young-Do Kim),송인욱(In-Uk Song),정성우(Sung-Woo Chung) 대한임상노인의학회 2010 대한임상노인의학회지 Vol.11 No.2

Apraxia of speech is impairment of their ability to coordinate the sequential or articulatory movements and result from an insult to the left cerebral hemisphere, especially lesion in left opecular area and pericentral sulcus. Although the left opercular region has been identified as coordinating articulation of speech, the precise regions remain unclear. We present a case with severe apraxia of speech due to an infarction in left pericentral sulcus, especially precentral gyrus in insula, without other neurological dificits. 말실어증은 좌측 대뇌, 주로 이마 덮개, 중심고랑 주변부의 병변으로 인하여 발음에 관련된 근육의 움직임이 그 조합을 제대로 짜지 못하여 생기는 장애이다. 좌측 이마 덮개 영역이 발음의 조합을 담당하는 영역으로 알려져 있으나 아직까지 명확한 영역은 알려져 있지 않다. 이에 본 저자들은 좌측 뇌섬엽의 전중심이랑을 포함한 중심고랑 주변부의 뇌경색으로 인하여 다른 신경학적 이상소견 없이 심한 말실어증이 발생한 증례를 경험하여 이를 보고하는 바이다.

수질사고 대응예측시스템 검증을 위한 추적자 실험

김영도 ( Young Do Kim ),한은진 ( Eun Jin Han ),서일원 ( Il Won Seo ),최황정 ( Hwang Jeong Choi ),문현생 ( Hyun Saing Mun ) 한국물환경학회 ( 구 한국수질보전학회 ) 2012 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2012 No.-

선택제약 위반을 활용한 문화콘텐츠의 네이밍 창작

김영도(Young-Do Kim) 한국콘텐츠학회 2010 한국콘텐츠학회논문지 Vol.10 No.12

본 논문의 목적은 문화 콘텐츠의 네이밍 창작 과정을 선택제약 위반에 기초하여 밝히는 것이다. 이것은 선택제약 위반이 ‘왕의 남자’와 ‘비보이를 사랑한 발레리나’ 같은 문화콘텐츠에 있어서 스토리 계획과 제목 네이밍의 한 방식으로 중요하게 고려되어야 함을 강조한다. 선택제약에 관한 이런 접근법은 1965년 노암 촘스키의 ‘통사이론의 제양상’이란 저작에서의 주장을 근거로 한다. 그의 아이디어는 언어학상 법칙의 위반은 단어와 문장의 선택자질과 관련된 허용성에 영향을 끼친다는 것이었다. 본 논문은 그의 선택제약과 선택제약 위반 사이의 확장된 개념을 문화콘텐츠의 네이밍 창작으로 맞춘 것이다. The purpose of this paper is to clarify the naming creation process of cultural contents based on the violation of selectional restrictions. This is to insist that the violation of selectional restrictions should be significantly considered as a mode of story planning and title naming in the cultural contents such as ‘King and the Clown’ and ‘Ballerina Who Loves B-Boy’. This approach of selectional restrictions is based on the insistence of Chomsky's ‘Aspects of the Theory of Syntax’ in 1965. His idea had proposed that violation of linguistic rules affects the acceptability in the selectional properties of words and sentences. This focuses on the naming creation of cultural contents by widening his notion between selectional restrictions and the violation of selectional restrictions.

실리콘 산화막의 두께에 따른 ALD Al₂O₃ 박막의 passivation 효과

김영도(Kim, Young-Do),박성은(Park, Sung-Eun),탁성주(Tark, Sung-Ju),강민구(Kang, Min-Gu),권순우(Kwon, Soon-Woo),윤세왕(Yoon, Se-Wang),김동환(Kim, Dong-Hwan) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06

실리콘 태양전지의 효율 향상을 위한 노력의 일환으로 결정질 실리콘 웨이퍼 표면passivation 물질 중 Atomic Layer Deposition (ALD)을 이용하여 증착한 Al₂O₃ 박막에 대한 관심이 증가하고 있다. 본 연구에서는 Al₂O₃ 박막의 증착 전 실리콘 웨이퍼의 산화막 두께에 따른 passivation 효과에 대해서 연구하였다. 실리콘 산화막은 HNO₃ 용액을 사용하여 화학적으로 생성시켰으며 HNO₃ 용액과의 반응 시간을 조절하여 실리콘 산화막의 두께를 조절하였다. 실리콘 산화막 생성 후 ALD로 Al₂O₃ 박막을 증착하였으며 증착 후 N₂ 분위기에서 annealing 하였다. Annealing 후 passivation 효과는 Quasi-Steady-State Photo Conductance를 사용하여 minority carrier의 lifetime을 측정하였다. Capacitance-Voltage measurement, Transmission Electron Microscopy, Ellipsometry를 사용하여 실리콘 산화막의 두께에 따른 Al₂O₃ 박막의 passivation 효과를 분석하였다.

신학과 철학의 관계성 : 어거스턴의 예를 중심으로

김영도(Young Do Kim) 영남신학대학교 2006 신학과 목회 Vol.26 No.-

This paper is to explore Augustine's understanding of the relationship between faith and reason as well as between his understanding of the relationship between theology and philosophy. This exploration is necessary because he is labeled the progenitor of the so-called medieval synthesis of faith and reason. According to Augustine, Christian faith should be rational. He embraced Platonism so long as it is not contradictory to Christian faith. By taking advantage of the understanding provided by reason, he intended to clarify faith based on authority. In this sense, reason finds what faith pursues. Augustine had been exposed to Platonism through the Enneads of Plotinus as well as encounters with the Christian Platonists in Milan before he underwent the mystical conversion experience of Cassiciacum in 386. Even after the conversion, his theological thinking was under the sway of philosophy. When he entered into ministry at Hippo in the 390s, Augustine was engrossed in the Pauline epistles. In light of Pauline theology, he made a critical reflection upon Philosophy and was not able to find in Platonism some Christian doctrines such as the person of the Holy Spirit and the Incarnation of Christ. From this time forward, he distanced himself from Platonism. Augustine's employment of pagan philosophy did not do harm to Christian faith. Rather, the former enriched the latter, making the latter more rational and universal. Throughout his life he remained a Platonist as much as he remained a Christian. In his late career, however, he did not praise philosophy as much.

영남신학대학교 신학대학원 교육과정 개선방안에 관한 연구

김영도(Young Do Kim) 영남신학대학교 2008 신학과 목회 Vol.30 No.-

This study aims to hammer out a renewed curriculum for the seminary program of Youngnam Theological University and Seminary. In the face of the changing circumstances of the Korean society and in response to the new needs from the church, the seminary is obliged to reevaluate the current curriculum and forge an enhanced one for its future. Furthermore, to maintain its own identity and unity among its member churches. our denomination the Presbyterian Church of Korea regards it imperative for the seminaries affiliated with it teach at least the same required courses. Some major factors to be considered in the process of laying out a new curriculum are believed to include emphases upon our confessional identity i.e., Reformed tradition, spiritual formation, services to the society, and contextualization of pastoral practicum. These factors represent respectively the crisis of identity of our denomination, the spiritual poverty of lay people as well as pastors, the lack of the church's accountability to the society, and the impracticability of the current pastoral practicum. To make a critical reflection upon the current curriculum of our theological institution, those of the seminaries affiliate with our denomination will be reviewed. For the benefit of our seminary, some strengths of them will be adopted.

도나투스주의 논쟁에 나타난 어거스틴의 은총의 수단(교회) 이해

김영도(Young Do Kim) 영남신학대학교 2005 신학과 목회 Vol.24 No.-

This study intends to explore the nature of the church articulated by Augustine during the Donatist controversy. Like other theological tenets, his ecclesiology was forged in the course of the rebaptismal controversy. The Donatists, having claimed themselves to be the offsprings of martyrs, seceded from the catholic church and established their own churches. They regarded the catholic church in which traitors had existed as the church of Judas and her sacraments as invalid. To Augustine's astonishment, they had rebaptized the believers coming from the catholic church. In the wake of their ecclesiastical assaults upon the catholic church, Augustine was obliged to defend the catholic faith. For Augustine, the church had existed long before the advent of the Holy Spirit on the Pentecost. The church is not only Corpus Christi but also the House of God and the communication of the Spirit. Only in the church, therefore, human persons can be cleansed and saved, encountering the triune God. Augustine asserts that there are two different aspects of the same church. One is historical, hierarchical, and visible; the other eschatological, spiritual, and invisible. They are not two different churches. Although an empirical church cannot be perfect in terms of her members, she is still holy. Even though she is a corpus permixtum on earth, she is still the only means through which saving grace is conferred by God. In short, he attacked the notion of the pure church of the Donatists. For Augustine, without love no one can be saved. Moreover, love is the love of unity. He thought that because of the lack of love the Donatists deviated from the catholic church. He is the first theologian who made a distinction between heresy and schism. The former is to destroy the unity of truth; the latter the unity of love. According to rum, the latter is worse because it is to rend the body of Christ. Augustine viewed universality as one of the fundamental characteristics of the church. For him, universality is not only geographical but also historical. Accordingly, the Donatist church which does not have a solidarity with other churches spread all over the world and possess the apostolic tradition inherited from the Apostles is not a true church. Augustine argues that the holiness of the church is not of the members of the church but of Christ. Accordingly, sinners in the church do not contaminate others' holiness, nor do they the church. The sacraments deriver from Church. Therefore the presence of the imperfect in the church do not nullify them. In sum, he made an undivided assault upon the Donatists' unorthodox practice of rebaptism. In light of jurisdiction, Augustine did not believe in the primary of the apostolic see. Yet, he rendered the sedes Petri as the symbol of the unity of the church and the bearer of the doctrinal authority. Thus a branch or the Donatist church which separated from the catholic church represented by the see of Rome does not possess life.

장미형확산관 형태의 해양방류시스템의 혼합특성 연구

김영도 ( Young Do Kim ),서일원 ( Il Won Seo ),권석재 ( Seok Jae Kwon ),류시완 ( Si Wan Lyu ),권재현 ( Jae Hyun Kwon ) 대한상하수도학회 2008 상하수도학회지 Vol.22 No.3

The hybrid model can be used to predict the initial near field mixing and the far field transport of the buoyant jets, which are discharged from the submerged wastewater ocean outfall. In the near field, the jet integral model can be used for single port diffusers while the б transformed particle tracking model was used in the far field. In this study, the experimental study was performed to verify the developed hybrid model in the previous research. The developed hybrid model properly predict the surface and vertical concentration distribution of the single buoyant jets with various effluent and ambient conditions. The hybrid model can also simulate the surface concentration distribution of the rosette diffuser except for the parallel diffuser with the higher densimetric Froude number due to the assumption that dynamic effects of the effluent plumes are negligible in the far field. The application of the hybrid model to rosette diffusers can predict the concentration near the diffuser more accurately when the line-plume approximation is used.

MoO3 분말의 수소환원을 통한 CIGS계 후면 전극용 Mo 박막제조

김영도 ( Young Do Kim ),김세훈 ( Se Hoon Kim ),조태선 ( Tae Sun Jo ) 대한금속재료학회(구 대한금속학회) 2011 대한금속·재료학회지 Vol.49 No.2

In order to obtain a suitable back contacting electrode for Cu(InGa)Se2-based photovoltaic devices, a molybdenum thin film was deposited using a chemical vapor transport (CVT) during the hydrogen reduction of MoO3 powder. A MoO2 thin film was successfully deposited on substrates by using the CVT of volatile MoO3(OH)2 at 550℃ for 60 min in a H2 atmosphere. The Mo thin film was obtained by reduction of MoO2 at 650℃ in a H2 atmosphere. The Mo thin film on the substrate presented a low sheet resistance of approximately 1 Ω/sq.