동해 울릉분지 남서주변부의 탄화수소 트랩 분석

이민우,강무희,윤영호,이보연,김경오,김진호,박명호,이금석,Lee, Minwoo,Kang, Moo-Hee,Yoon, Youngho,Yi, Bo-Yeon,Kim, Kyong-O,Kim, Jinho,Park, Myong-ho,Lee, Keumsuk 대한자원환경지질학회 2015 자원환경지질 Vol.48 No.4

동해 울릉분지 남서주변부는 탄화수소의 부존 가능성이 높은 대륙붕 환경으로 1990년대 말에 상업적 생산이 가능한 가스전이 발견된 바 있다. 가스전과 인접한 연구지역에서도 추가적인 가스개발을 위해 침식수로 내부의 조립질 퇴적체를 대상으로 시추가 수행되었지만 경제성이 부족한 것으로 판명되었다. 본 연구에서는 새로 취득된 탄성파 및 기존 시추 자료를 이용하여 울릉분지 남서주변부에 분포하는 침식수로 하부에 탄화수소 트랩 가능성이 있는 지질구조를 탐지하였다. 취득된 심부 탄성파 자료 및 시추자료 해석에 의하면 연구지역에 분포하는 퇴적층은 구조진화와 연계하여 열개동시성 퇴적층군(MS1), 후열개 퇴적층군(MS2), 횡압력 동시성 퇴적층군(MS3), 후횡압력 퇴적층군(MS4)으로 구분된다. 중기 마이오세 이전에 분지형성과 동시에 퇴적된 MS1은 주로 중-저진폭, 저주파수의 캐오틱 음향특성을 나타낸다. 중기 마이오세 동안 분지가 확장되며 다량의 퇴적물이 유입된 MS2는 중-저진폭의 음향특성과 함께 연속성이 양호하며 전진퇴적 양상을 나타낸다. MS3은 고진폭 및 중-고주파수의 연속성이 양호한 반사면을 나타내는데 이는 조립질 퇴적층으로 해석된다. 조립질 퇴적물이 우세한 MS3는 침식수로에 의해 광역적으로 삭박되었으며 침식수로 내부에는 MS4의 세립질 퇴적물이 충전되어 층서트랩을 형성한다. 따라서 연구지역의 트랩 구조는 MS3의 조립질 퇴적층이 저류층을 형성하며 MS4의 세립질 퇴적물로 충전된 침식수로가 덮개암으로 작용하는 층서 트랩으로 트랩 구조 내부에서는 탄화수소 부존을 지시하는 flat-spot 탄성파 이상대가 발달한다. A commercial gas field was found in the southwestern continental shelf of the Ulleung Basin, East Sea in the late 1990s. To develop additional gas field, an exploration well was drilled through the coarse infill of submarine canyon near the gas field, but it was uneconomic to develop hydrocarbons. Using newly acquired deep seismic reflection and previous well data, we have identified additional geological structure which has hydrocarbon potentials below submarine canyons in the southwestern margin of the basin. Based on the interpretation of the deep seismic reflection and well data, the sequences of the study area can be classified into the syn-rift megasequence(MS1), post-rift megasequence(MS2), syn-compressional megasequence(MS3), and post-compressional megasequence(MS4) in relation to the tectonic events. MS1, deposited simultaneously with the basin formation before the middle Miocene, is characterized by chaotic seismic facies with low- to moderate-amplitude and low frequency reflections. MS2 comprises laterally continuous, low- to moderate-amplitude reflections, showing progradational stacking patterns due to high rates of sediment supply during basin expansion in the middle Miocene. MS3 is mainly composed of continuous reflections with high amplitude and moderate- to high-frequency which are interpreted as coarse-grained sediments. The coarse-grained sediments of MS3 sequence is widely truncated by several submarine canyons which filled with fine-grained sediment of MS4 to form a stratigraphic trap of hydrocarbon. Therefore, the reservoir and seal of the hydrocarbon trap in the study area are coarse-grained sediment of MS3 and submarine canyon filled with fine-grained sediment of MS4, respectively. A flat-spot seismic anomaly, which may indicate the presence of hydrocarbon, is observed within the stratigraphic trap.

온라인 한국어교육에 대한 태도, 기대, 인식 연구 -온라인 세종학당 교원과 학습자 비교를 중심으로-

이민우 ( Lee¸ Minwoo ) 이중언어학회 2022 이중언어학 Vol.87 No.-

This study analyzed the attitudes, expectations and Awareness for online Korean language education for teachers and learners who participated in the online King Sejong Institute curriculum. As a result of the survey, teachers preferred offline education to online education and had lower attitudes and expectations for online Korean education than learners. Unlike teachers, learners showed no difference in satisfaction between online and offline education, and their attitudes and expectations toward online education were also high. It was found that well-prepared online classes can be satisfactory to learners through the learners’ high attitudes and expectations for online Korean education. In addition, it was confirmed that online education, like offline education, satisfies learners by operating an appropriate curriculum and providing high-quality materials, and can sufficiently contribute to the improvement of learners’ language ability. It was found that teachers, unlike learners, had difficulties in conducting online education and did not have much confidence in the effectiveness of education. In particular, they complained of a lot of anxiety and difficulty about the unfamiliar teaching method, which is interpreted as reflecting the attitude of teachers who are familiar with real-time education. From this point of view, it can be seen that it is most important to provide teachers with the ability to utilize online teaching tools and implement various online teaching and learning in order to conduct online Korean language education. If appropriate teacher education for online education, provision of educational materials, and system support are provided, it is expected that teachers’ attitudes and awareness of online education will also increase. (Cyber Hankuk University of Foreign Studies)

PPL 배치형태가 광고효과에 미치는 영향에 관한 연구

이민우(Minwoo Lee) 전북대학교 산업경제연구소 2017 아태경상저널 Vol.9 No.2

간접광고(PPL: Product Placement)는 영화나 드라마 속에서 일정한 비용을 지불하고 의도적으로 특정 제품이나 브랜드들을 노출시키는 형태의 광고이다. 방송심의 규정에서는 PPL은 자막으로 표시되거나 의도적인 제품노출이 아니라 드라마에서 필요한 소품과 배경에 한해서만 간접적으로 제품이 등장하는 것을 허용하고 있다. 본 연구에서는 드라마 속에서 자주 노출되는 PPL의 의미와 유형을 알아본다. 그리고 드라마 속에 배치된 브랜드를 중심으로 드라마 속 PPL의 사례와 문제점을 논의한다. 마지막으로 실험을 통하여 PPL 배치형태와 브랜드 친숙도에 따라 브랜드 회상도, 브랜드 태도, 브랜드 구매의도 등에 어떠한 영향를 미치는지를 살펴보았다. 또한 배치 형태와 브랜드 친숙도는 브랜드 회상도, 브랜드 태도, 브랜드 구매의도 등에 상호작용효과를 미치는가를 살펴보았다. PPL(product placement) is a type of advertisement that exposes certain products or brands by intentionally paying a certain fee in a movie or drama. In the broadcasting deliberation regulations, the PPL allows products to appear only indirectly in the backgrounds and backgrounds needed for the drama, rather than being displayed as captions or intentional product exposures. This study examines the meaning and types of PPL that is frequently exposed in drama. And we discuss the cases of PPL in the drama and the problem centered on the brand placed in the drama. Finally, we examined the effects of PPL layout type and brand familiarity on brand recall, brand attitude, and brand purchase intention through experiments. In addition, we examined whether placement style and brand familiarity interact with brand recall, brand attitude, and brand purchase intention.

북한의 이동식 미사일 발사대 움직임 분석에 관한 연구

이민우(Minwoo Lee),이춘주(Choonjoo Lee) 육군사관학교 화랑대연구소 2018 한국군사학논집 Vol.74 No.3

North Korea keeps developing nuclear weapon as well as various types of missile launchers, such as Transporter Erector Launcher(TEL), submarine launcher, and solid-fueled missile launcher to evade detection during launch preparation. As a defensive response to North Korea’s nuclear and missile threats, South Korea is continue researching and developing its own Kill-Chain, Korean Air and Missile Defense(KAMD), and Korean Massive Punishment and Retaliation(KMPR). However, South Korea’s Kill-chain system has a limitation on North Korea’s mobile missile launchers if real-time target information is not provided. Therefore, this study propose TEL pattern analysis which models TEL movement to improve this limitation. This study will contribute on strike location tracking and efficient military operation by proposing model which provides estimation on TEL movement pattern and subsequential strike location tracking.

동해 울릉분지 남서주변부의 탄화수소 이동경로 분석

이민우(Minwoo Lee),강문희(Moo-Hee Kang),윤영호(Youngho Yoon),김경오(Kyong-O Kim),김진호(Jinho Kim),박명호(Myong-Ho Park) 대한지질학회 2014 대한지질학회 학술대회 Vol.2014 No.10

슬랙 및 PQ 제어 인버터 조합 기반 확장된 슬랙 발전기의 최대 배율 연구

이민우(Minwoo Lee),이수형(Soo Hyoung Lee) 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.10-2

해상 기반 발사체계 및 프로세스 사례연구

이민우(Minwoo Lee),국승민(Seung Min Guk),백종현(Jonghyeon Baek),정은상(Eun Sang Jung) 한국추진공학회 2022 한국추진공학회 학술대회논문집 Vol.2022 No.11

머신러닝을 활용한 미세먼지 예측

이민우(Minwoo Lee),최형림(Hyunglim Choi),하정호(Jeongho Ha),이승호(Seungho Lee),안병구(Beongku An) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.11

HybridFTW를 사용한 효율적인 k-NN 검색

이민우(Minwoo Lee),문양세(Yang-Sae Moon),김진호(Jinho Kim) 한국정보과학회 2013 정보과학회논문지 : 데이타베이스 Vol.40 No.6

시계열 데이터를 대상으로 한 유사 검색에서 동적 타임 워핑(dynamic time warping: DTW) 거리를 효율적으로 계산하기 위해 많은 연구가 수행되었다. DTW 거리는 유사 검색에서 높은 정확도를 제공하지만, 계산이 복잡하여 대용량 데이터베이스에 적용하기 힘든 문제점이 있다. 이러한 DTW 거리의 효율적 계산 방법으로 FastDTW와 FTW가 제안되었고, 최근 이 두 방법의 장점을 취한 HybridFTW가 제안되었다. HybridFTW는 FastDTW의 허용 범위 제한을 통한 빠른 계산의 장점과 FTW의 미리 버림의 장점을 조합한 하이브리드 접근법이다. 본 논문에서는 우선 FTW와 FastDTW의 장점을 각각 분석하고, 이들의 장점을 취한 HybridFTW의 개념을 설명한다. 그런 다음, HybridFTW를 k-NN 검색에 사용하기 위한 주요 절차를 다섯 단계로 나누어 설명한다. 그리고, 이들 다섯 단계를 사용하여 HybridFTW 기반의 k-NN알고리즘을 새롭게 제안하고, 그 정확성을 정리로서 제시하고 증명한다. 마지막으로, 실제 실험을 통해 제안한 알고리즘이 기존의 FastDTW와 FTW를 기반한 알고리즘보다 최대 20배까지 성능을 향상시킴을 보인다. There have been many research efforts on computing the DTW(dynamic time warping) distance efficiently in similarity search on time-series databases. The DTW distance is known to offer the high accuracy in similarity search, but it has a critical problem in supporting the large database due to its high computation complexity. For the fast computation of the DTW distance, FastDTW and FTW have been proposed recently, and HybridFTW has also been proposed to adopt both of their advantages. HybridFTW is a hybrid approach that combines the advantage of FastDTW, which provides the fast computation through the limitation of allowable ranges, and the advantage of FTW, which exploits the early abandon effect. In this paper, we first analyze the computation procedure of FastDTW and FTW in detail and present the concept of HybridFTW by taking both of their advantages. After then, we propose a HybridFTW-based k-NN algorithm. For this, we first explain five major steps to implement the HybridFTW-based k-NN search in detail. We next propose a formal k-NN algorithm exploiting HybridFTW and prove its correctness through a formal theorem. Experimental results for real and synthetic data sets show that the proposed k-NN algorithm improves the search performance by up to 20 times over k-NN algorithms based on FastDTW and FTW.

논문 : 의미관계를 이용한 어휘교육의 효과 연구-고급 학습자를 중심으로-

이민우 ( Minwoo Lee ) 국제한국어교육학회 2015 한국어 교육 Vol.26 No.4

This study investigated the differential effectiveness of vocabulary teaching using different semantic relations. The previous research reported that using semantic relations for vocabulary teaching is more effective than using thematic relations because of less interference effects. In addition to the effectiveness of using semantic relations, the studies also showed that using antonyms are more effective than synonyms and hypernyms/hyponyms. The effectiveness of those teaching methods appeared to interact with learners` Korean proficiency. This study compared effectiveness of vocabulary teaching using synonyms versus antonyms for advanced learners of Korean as a second language. The study found that (1) presenting vocabulary using thematic relations, synonyms, and hyponyms should be discouraged because those relations do not support learners to perceive semantic meanings of the words clearly, while (2) it is supported by using antonyms more effectively. Moreover, (3) when using thematic relations and synonyms, learners` perceptions on words can be enhanced when they can find difference in meaning through the contextual evidence.(Korea University)