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무인수상정의 기뢰 탐지 임무 수행을 위한 통합 시뮬레이션 방법 연구
이혜원(Hye-Won Lee),노명일(Myung-Il Roh),함승호(Seung-Ho Ham),조로만(Luman Zhao),김낙완(Nak-Wan Kim),하솔(Sol Ha),우주현(Joo-Hyun Woo),정우현(Woo-Hyun Jung),유찬우(Chan-Woo Yu) (사)한국CDE학회 2017 한국CDE학회 논문집 Vol.22 No.3
The USV performs various missions including mine detection and marine reconnaissance and survey unmanned. As the autonomic software for USV takes charge of detection, decision, and command instead of human, the verification and validation (V&V) of the software is highly required at the early design stage. Due to the difficulty of such V&V before the real USV is made, the virtual prototype of USV and ocean space are adopted in this study. For mine detection mission, which is one of the most important mission of USV, four modules are developed and implemented here; scenario management and display module, USV motion analysis module, submarine topography synthesis module, and mine detection module. The mine detection module represents the control algorithm in autonomic software, and the rest of the modules are virtual prototype which represents the ocean space and hardware in USV such as GPS (Global Positioning System) and SSS (Side Scan Sonar). With the virtual prototype modules, the control algorithm in mine detection module is verified. Meanwhile, for the data communication between the modules, the ROS (Robot Operating System) is used. The ROS provides message communication function between the modules, so that each module can transmit and receive data during the simulation. To check the applicability of the proposed method, the mine detection scenario is performed using the virtual prototype of USV and ocean space. The result shows that the proposed method can be effectively used to test and develop the mine detection algorithm of autonomic software in USV.
급성 담낭염으로 발현한 Churg-Strauss 증후군 1예
이우주 ( Woo Joo Lee ),황지원 ( Ji Won Hwang ),김은 ( Eun Kim ),윤세효 ( Se Hyo Yune ),하정민 ( Jung Min Ha ),윤나라 ( Na Ra Yoon ),이병재 ( Byung Jae Lee ),최동철 ( Dong Chull Choi ) 대한천식알레르기학회 2013 Allergy Asthma & Respiratory Disease Vol.1 No.4
Churg-Strauss syndrome (CSS) is a rare systemic vasculitis. It is characterized by peripheral eosinophilia, asthma, neuropathy, skin manifestation, and less frequently gastrointestinal tract symptoms. Here we report a case of CSS which is initially manifested as acute acalculous cholecystitis. A 67-year-old asthmatic woman visited Emergency Room because of acute abdominal pain. Computed tomography showed acalculous cholecystitis and laparoscopic cholecystectomy was done. Pathology of gallbladder showed marked eosinophilic infiltration with necrotizing vasculitis and granuloma. On the basis of asthma, sinusitis, lung infiltration, combined peripheral eosinophilia and neuropathy, the patient was diagnosed as CSS. To our knowledge, this is the first case of pathologically proven eosinophilic cholecystitis in Korea.
이우주,박경옥,김해경,Lee, Woo-Joo,Park, Kyung-Ok,Kim, Hae-Kyung 한국통계학회 2010 Communications for statistical applications and me Vol.17 No.5
이 연구의 목적은 우리나라 생명보험사들의 보험계약대출(약관대출) 수요에 대한 통계적 분석과 그 예측을 위한 확률모형을 개발하는 데 있다. 이를 위해, 먼저 대출 금리가 정책적 변화를 거친 1999~2008 기간 동안 우리나라 보험계약대출의 수요계열에 대한 추세, 주기성, 종속성 등 확률 및 통계적 특성을 파악하였다. 다음에, 교차상관분석을 통해 대출수요와 인과관계를 가질 수 있는 경제변수들과의 상호관련성을 밝히고, 특히 소비자 물가지수가 보험계약대출 수요를 선도하고 있음을 밝혔다. 마지막으로, 이러한 결과를 기초로 보험계약대출 수요의 예측을 위한 단변수모형 그리고 선도변수계열을 이용한 전이함수모형을 각각 완성하고 그 효과를 비교 평가하였다. 마지막으로 유도된 확률모형을 이용하여 보험계약대출 수요예측의 통계적 절차를 제안하였다. This paper is concerned with the statistical analysis and development of stochastic models for the demand for life insurance policy loans. For these, firstly the characteristics of the regression trend, periodicity and dependence of the monthly demand for life insurance policy loans are investigated by a statistical analysis of the monthly demand data for the years 1999 through 2008. Secondly, the causal relationships between the demand for life insurance policy loans and the economic variables including unemployment rate and inflation rate for the period are investigated. The results show that inflation rate is main factor influencing policy loan demands. The overall evidence, however, failed to establish unidirectional causality relationships between the demand series and the other variables under study. Finally, based on these, univariate time series model and transfer function model where the demand series is related to one input series are derived, respectively, for the prediction of the demand for life insurance policy loans. A statistical procedure for using the model to predict the demand for life insurance policy loans is also proposed.
동적 멀티캐스트 전송을 이용한 스포츠 정보 제공 시스템 구현 (pp.577-580)
이우주(Woo-joo Lee),우희경(Heekyoung Woo),김종권(Chong-kwon Kim) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅲ
본 논문은 주문형 비디오 서비스와 주문형 뉴스 서비스의 혼합적인 형태인 주문형 스포츠 정보 제공 시스템의 구현 결과를 기술하였다. 스포츠 정보 제공 시스템은 스포츠에 관심이 많은 사용자들에게 이미지, 음성, 데이터 및 동화상으로 구성된 스포츠 뉴스를 효율적으로 제공할 수 있는 시스템으로서 앞으로 구축된 초고속 정보통신망에서 제공할 수 있는 하나의 서비스가 될 수 있다. 이 시스템의 가장 큰 특징은 동적 멀티캐스트 전송 알고리즘을 이용하여 통신망의 효율을 높일 수 있다는 점이다. 이 시스템은 컴퓨터에 대한 전문지식이 없는 일반 사용자들도 쉽게 사용할 수 있도록 모든 검색 작업 및 뉴스 시청 과정이 플러그인 기술을 이용하여 웹브라우저에서 이루어질 수 있게 구현하였다. 또한 스포츠 뉴스를 중앙 집중적 방식이 아닌 분산 환경에서 제공함으로써 확장성이 뛰어나다는 장점이 있다.
영어교육을 위한 영화 매체의 활용: 영어교육과 영화의 융합적 연구
이우주 ( Woo Joo Lee ),최인순 ( In Soon Choi ) (사)한국전시산업융합연구원 2015 한국과학예술융합학회 Vol.22 No.-
Exposed to various media and technology resources--from audio to printed material--, students still lack the motivation for learning in the conventional way. This is the main reason why English language teachers always keep searching for more motivating teaching sources. Course books in Engish classes turn out to be artificial and not very engaging for students. One way of bringing variety into the classroom is the use of movies in EFL teaching. How can movies improve English learning in EFL classroom? This study investigated on the correlation between viewing movies and effective learning in EFL classroom. A review of the theoretical and research evidence on movies is presented in this paper. The study analyzes the effects of using movies in the EFL classroom. It reveals its effects on developing students’ all literacy skills: listening, speaking, writing and reading skills. The study concluded that movies attract students’ attention by presenting English in a more natural way than any of the textbooks. More importantly, movies offer a visual context aids, helping students to understand and improve their literacy skills. The aims of this paper is to promote better understanding of the usefulness of using movies as a teaching tool in the EFL classroom as well as promote language teachers to use movies in their language teaching.
효과적인 영어 교수 및 학습의 필수 요건들에 대한 고찰 -한국 초등학생 중심으로-
이우주 ( Woo Joo Lee ),최인순 ( In Soon Choi ) (사)한국전시산업융합연구원 2015 한국과학예술융합학회 Vol.20 No.-
The aim of the research was to arrive at a detailed understanding of English language education for young learners in Korea. The study shows that Korea Ministry of Education introduced English language on the elementary level in order to bring up a global person from the early age. This paper examines the factors which influence English language teaching and learning in Korea: Early start (age factor, better pronunciation, time factor); the Ministry of Education involvement and support (well-developed curriculum, well-trained teachers, sufficient materials); and parental support. The study concludes that the most effective factor can be the age, as the theory of CPH strongly argues. Also, the content-based instruction is one of the effective factors that the Korea Ministry of Education is trying to apply in public school curriculum. Moreover, the teachers’ and parents’ supports are the crucial matter for young learners in order to motivate them to learn English. In order to improve English language education for young learners in Korea, all these factors should be taken into account.
Using English Songs in the adult EFL classroom
Lee, Woo Joo(이우주),Choi, In Soon(최인순) 한국전시산업융합연구원 2017 한국과학예술융합학회 Vol.31 No.-
Students still lack the enthusiasm, motivation and interest to learn English in the conventional way even though they are exposed to various media and technology resources. This is the main reason why English language teachers should always keep an eye on the more engaging and involving teaching sources. Text books in English classes turn out to be not very engaging for students. It is no surprise that many learners view English language learning as a boring and insuperable wall. In fact, English learning can be implemented in a more relaxed and enjoyable way. One of the progressive ways to bring variety into the classroom is integrating English songs in the adult EFL classes. Using songs gives a great influence in the educational settings. Then, how can songs improve English learning in the EFL classroom? This study investigates the correlation between listening to songs and effective learning in the EFL classroom. A review of the theoretical and research evidence on English songs and education is presented in this paper. The study analyzes the effects of using songs in the EFL classroom on all four language skills: listening, speaking, writing and reading. The study draw a conclusion that songs attract students’ attention by presenting English in a more natural way than any of the existing textbooks. Most importantly, songs offer listening aids, helping students to improve their listening skill and extend their vocabulary ability. The aim of this paper is to promote better understanding of the effectiveness of English songs as a great teaching tool in the EFL classroom and to suggest language teachers to use songs in their language teaching.