[권두언] DGIST 이건우 총장 인터뷰

이건우 한국공학교육학회 2024 Ingenium(人材니움) Vol.31 No.2

『지옥에서 보낸 계절』의 신화비평적 읽기 : Une Lecture mythocritique d'Une Saison en enfer

이건우 서울大學校 人文學硏究所 1996 人文論叢 Vol.36 No.-

요약 lieu de la lumiere et de la verite? Apres la (saison en enfer), vers ou se dirige-t-il, si ce n'est plus vers 1'univers dionysiaque, ni apollinien, ni prometheen qu'il a deja parcouru? N'est-ce pas vers des Illuminations (hermetiques) dans le sens ou elles sont avares de significations, mais (lumineuses) dans le sens ou elles eclairent un univers reste obscur? A notre avis, les Illuminations sont 1'oeuvre ultime du Rimbaud sorti d' (une saison finale en enfer).

죽음의 液性

李建雨 陸軍士官學校 1980 한국군사학논집 Vol.20 No.-

다중 빔 형성을 위한 GPS 수신기 구조

이건우,임덕원,이창원,박찬식,황동환,이상정,Lee, Geon-Woo,Lim, Deok-Won,Lee, Chang-Won,Park, Chan-Sik,Hwang, Dong-Hwan,Lee, Sang-Jeong 한국군사과학기술학회 2009 한국군사과학기술학회지 Vol.12 No.2

GPS receivers can be disrupted by intentional or unintentional jamming, then it is unable to receive GPS signals and it is impossible to get the correct navigation results. Anti-jamming schemes using array antennas are being studied well due to high performance of those, and the efforts to apply them to GPS receiver are also being done. A GPS receiver structure for a multiple beam-forming scheme among those schemes has been proposed in this paper, and the performance is also compared with that using a general GPS receiver structure. For a general GPS receiver structure, each satellite signal which is formed by a beam-forming scheme is summed to be processed in a part of digital signal processing. For a proposed GPS receiver structure, however, each satellite signal is respectively processed by a designated channel in a part of digital signal processing. Finally, it is confirmed that the proposed GPS receiver structure is superior to a general GPS receiver structure in a point of the carrier to noise power ratio and the navigation accuracy using a software platform.

보편적 신화소로서의 주권여신

이건우 서울大學校 人文學硏究所 2003 人文論叢 Vol.49 No.-

La De´esse de la souverainete´ est le concept central de l'imaginaire celtique. Notre travail a pour but d'examiner ses aspects dans Lebor Gabala Erenn (Le Livre des conque^tes de l'Irlande) et de prouver l'universalite´ de ce concept par la relecture de la The´ogonie d'He´siode. Il n'y a pas d'e´quivalent de la The´ogonie grecque ou la Gene`se biblique dans la mythologie celtique. Par contre, Le Livre des conque^tes de l'Irlande relate des histoires mythologiques des premiers immigrants et il nous laisse voir l'arche´type de l'imaginaire celtique. Selon ce document re´dige´ au moyen a^ge par les moines chre´tiens qui gardaient encore la tradition druidique, les premiers arrivants en Irlande avant le De´luge avaient pour chef une femme, Banba ou Cessair. Apre`s le De´luge, il y eut cinq conque^tes de l'Irlande: 1° par la race mene´e par Partholon de Mygdonie, c'est-a`-dire Petite Gre`ce, 2° par les Grecs de Scythie guide´s par Nemed, 3° par les Fir Bolg, descendants de Nemed qui e´taient retourne´s en Gre`ce, 4° par les Thu´atha De´ Da´nann, ou enfants de la De´esse Dana, qui sont aussi descendants de Nemed, 5° par les Goidels, fils de Mil, venus d'Espagne. Les premiers arrivants avant le De´luge ont disparu soit par le De´luge, soit par la peste. Apre`s le De´luge, la race de Partholon n'a pas surve´cu a` la peste, mais les autres immigrants se sont succe´de´ jusqu'aux enfants de Mil. Ce qui attire notre attention, c'est que la socie´te´ mythique de l'Irlande e´tait, si l'on veut, matriline´aire, et la souverainete´ de l'i^le e´tait de´tenue par la de´esse ou la reine qui la conce`de au nouveau souverain en se mariant avec lui. Les premiers arrivants ont e´te´ guide´s par une femme; dans l'e´pisode de la conque^te de Partholon, Le Livre des conque^tes de l'Irlande de´crit longuement l'adulte`re de la reine; apre`s le massacre des Fir Bolg par les Thu´atha De´ Da´nann, la reine des premiers couche avec le roi des derniers; menant des combats contre les Thu´atha De´ Da´nann, les Goidels s'entretiennent avec trois femmes ou trois reines irlandaises qui demandent que leur nom soit donne´ a` l'i^le. Ces histoires nous permettent de conclure que la de´esse ou la reine est elle-me^me le symbole de la souverainete´ de l'Irlande. Si nous relisons la The´ogonie d'He´siode a` la lumie`re de cette lec¸on, la mythologie grecque, elle aussi, se re´ve`le structure´e autour du concept-cle´ de la mythologie celtique. Gai¨a, la terre-me`re, a enfante´ toute seule Uranos, le ciel. Contre la tyrannie de son fils-mari Uranos, Gai¨a incite l'un de leurs enfants Cronos a` trancher les bourses du pe`re avec la grande serpe qu'elle a pre´pare´e. Craignant de perdre la souverainete´, comme son pe`re, par l'un de ses propres enfants, Cronos les avale de`s qu'ils sont ne´s. Et C'est Rhe´a qui se re´volte contre son mari souverain, en donnant Zeus a` Gai¨a pour qu'il de´tro^ne son pe`re. Et c'est He´ra qui s'efforce de mettre un frein a` la fe´condite´ de´sordonne´e de Zeus. He´siode, comme le Platon du Banquet, nous laisse entrevoir que la socie´te´ grecque e´tait misogyne. L'histoire de Pandore en est un exemple saillant. Mais les le´gendes mythiques des he´ros nous confirment que le concept de la De´esse de la souverainete´ est valable dans la lecture de la mythologie grecque. Tous les he´ros accomplissent leurs prouesses avec l'aide de la princesse he´ritie`re du pays ennemi, et ils acce`dent a` la souverainete´ en se mariant a` la princesse ou la reine: Jason acquiert le Toison d'or avec l'aide de Me´de´e; Perse´e qui a sauve´ Androme`de devient souverain en se mariant avec elle; The´se´e sort vivant du Labyrinthe gra^ce au fil d'Ariane; OEdipe devient roi de The`bes en se mariant avec la reine-veuve. Cette tradition s'ave`re valable dans tous les domaines de l'imaginaire. Surtout dans la litte´rature populaire et paralle`le comme le conte de fe´e, la bande dessine´e et le cine´ma. Parmi les he´ritages de la tradition celtique, sans parler des contes folkloriques comme Peau d'a^ne ou Riquet a` la houppe, les aventures du roi Arthur et des chevaliers de la Table Ronde se construisent autour du concept de la De´esse de la souverainete´. C'est parce que la Reine a commis l'adulte`re, c'est-a`-dire que la reine a choisi un autre roi, que le vieux roi tombe malade. Robin des bois qui se place aussi dans la tradition celtique dispute Marianne au Seigneur de Nottingham. Les he´ros de western, chevaliers modernes, s'efforcent toujours de prote´ger une femme; Superman, Batman, Zorro, James Bond ou les garc¸ons de la Guerre des e´toiles, les he´ros modernes eux aussi, s'aventurent pour sauver une femme de la menace des 《mauvais》. Me^me dans la tradition core´enne, on peut facilement repe´rer la De´esse de la souverainete´: la premie`re core´enne est la me`re de Tangun; la princesse de Nakrang de´chire le Jamyeonggo pour la victoire de Hodong, prince de Koguryeo; Seodong, prince de Paikje, re´pand la chansonnette pour obtenir la main de Seonhwa, princesse de Shinla; la Dame Suro ainsi que la femme de Cheoyong ont e´te´ les objets de dispute entre l'homme et le dieu-dragon ou le 《Kwishin》; Chunhyang e´tait la de´esse de la souverainete´ de la re´gion de Namwon, que Monryong Lee et Hakdo Pyun ont dispute´e. Seule la mythologie celtique accentue de fac¸on exceptionnelle le concept de la de´esse de la souverainete´, mais ce concept, beaucoup plus universel qu'on pourrait le croire, nous permet de lire les autres mythologies et traditions d'une autre manie`re.

유아코딩로봇활동을 통한 협동적 문제해결학습 절차모형 구안

이건우,유구종 한국열린유아교육학회 2019 열린유아교육연구 Vol.24 No.6

This study analyzes both the perception of academic research on coding activities and collaborative problem­solving learning through big data analysis and integrated them. In addition, related model and case analysis are conducted. The main objective is to develop a collaborative problem-solving learning model through children coding robot activity. To this end, text data were collected and refined from 79 domestic and international coding and related model papers over the past three years and visualized using UCINet6. In addition, through the analysis of the contents of 12 previous studies, the elements for collaborative problem-solving learning and devised the first procedure and strategy. the first drafted procedures and strategies were applied to the kindergarten site from November 06, 2017 to February 02, 2018, and analyzed the cases presented. For higher validity, the study comprehended needs on the field, and field observation and expert consultation were conducted for more meticulous application. Through this, the final cooperative problem-solving learning procedure model for children coding robot activity was developed to prevent possible difficulties within coding robot activities for children. 본 연구는 빅데이터 분석을 통해 코딩활동과 협동적 문제해결학습에 대한 학술연구의 인식을 분석하고, 선행연구 및 관련모형, 사례 분석을 통해 내용요소를 분석하여 유아코딩로봇활동을 통한 협동적 문제해결학습 절차모형 구안을 주목적을 두고 수행되었다. 이를 위해 최근 3년간 국내․국외의 코딩 및 관련모형 논문 79편을 대상으로 텍스트 데이터를 수집 및 정제하였으며, UCINet6를 사용하여 시각화 하였다. 또한 12편의 선행연구의 내용분석을 통해 협동적 문제해결학습을 위한 요소를 추출하여 1차 절차모형 및 전략을 구안하였다. 1차로 구안된 절차모형 및 전략을 2017년 11월 06일부터 2018년 02월 02일까지 유치원 현장에 적용하며 나타난 사례를 분석하고, 타당도를 높이기 위해 현장의 요구를 파악하였으며 이를 보다 면밀히 수용하기 위해 현장 관찰과 전문가 협의를 실시하였다. 이를 통해 유아코딩로봇활동 시 발생할 수 있는 문제를 예방하기 위한 협동적 문제해결학습 절차모형을 구안하였다.

엣지컴퓨팅을 활용한 분산처리 시스템의 가용성 향상에 관한 연구

이건우,김영곤 한국인터넷방송통신학회 2022 한국인터넷방송통신학회 논문지 Vol.22 No.1

Internet of Things (hereinafter referred to as IoT) related technologies are continuously developing in line with the recent development of information and communication technologies. IoT system sends and receives unique data through network based on various sensors. Data generated by IoT systems can be defined as big data in that they occur in real time, and that the amount is proportional to the amount of sensors installed. Until now, IoT systems have applied data storage, processing and computation through centralized processing methods. However, existing centralized processing servers can be under load due to bottlenecks if the deployment grows in size and a large amount of sensors are used. Therefore, in this paper, we propose a distributed processing system for applying a data importance-based algorithm aimed at the high availability of the system to efficiently handle real-time sensor data arising in IoT environments. 최근 정보통신기술의 발전에 따라 사물인터넷(이하 IoT) 관련 기술이 지속적으로 발전하고 있다. IoT 시스템은다양한 센서들을 바탕으로 센서마다 고유한 데이터를 네트워크를 통해 주고 받는다. IoT 시스템에서 발생하는 데이터는실시간으로 발생한다는 특징과, 그 양이 설치된 센서의 양과 비례한다는 점에서 연속적으로 수집되는 데이터들은 빅 데이터로 정의할 수 있다. 현재까지의 IoT 시스템은 중앙 집중 처리 방식을 통한 데이터 저장, 처리 및 연산을 적용하였다. 하지만, 구축 규모가 커지고 다량의 센서를 사용하는 경우 기존의 중앙 집중 처리 방식의 서버는 병목 현상으로 인한부하가 발생할 수 있다. 따라서, 본 논문에서는 IoT 환경에서 발생하는 실시간 센서 데이터를 효율적으로 처리하기 위하여 시스템의 고가용성을 목적으로 하는 데이터의 중요도 기반 알고리즘을 적용하기 위한 분산 처리 시스템에 대해 제안하였다.

자동차 외형설계를 위한 CAD 시스템의 개발

이건우,이상찬,민승재 한국자동차공학회 1990 한국자동차공학회 학술강연초록집 Vol.- No.-

협동적 문제해결학습에 기반한 유아코딩로봇 활동이 교사 학습지원 행동과 유아의 수학적 문제해결력에 미치는 영향

이건우,유구종 한국열린유아교육학회 2019 열린유아교육연구 Vol.24 No.4

본 연구는 유아코딩로봇활동 실천방안을 위한 코딩교육의 구성과 요소를 분석하고 협동적 문제해결학습에 기반한 유아코딩로봇 활동이 교사 학습지원 행동과 유아의 수학적 문제해결력에 미치는 영향을 밝히는데 주목적을 두고 수행되었다. 이에 따라 본 연구의 처치는 만 5세 43명을 대상으로 6주의 예비연구를 거쳐 12주간 실시되었다. 학습지원 행동 분석을 위해서는 처치 회기에 따른 이원반복측정 분석을 실시하였으며, 유아의 수학적 문제해결력 분석을 위해서는 두 집단의 사전 사후 검사 대상 독립표본 t-검증을 실시하였다. 연구결과 첫째, 본 연구의 처치는 교사 학습지원 행동에 긍정적인 영향을 미치는 것으로 분석되었다. 둘째, 회기에 따라 학습지원 행동에 있어 통계적으로 유의미한 차이가 있는 것으로 분석되었다. 셋째, 본 연구의 처치는 유아의 수학적 문제해결력에 긍정적인 영향을 미치는 것으로 분석되었다. 이러한 연구결과에 기초하여 협동적 문제해결학습에 기반한 유아코딩로봇 활동의 활용방안을 논의하였다. This study is to analyze the 'structure and components of the coding education' for the ways of practicing young children's coding robot activities and to identify the effects of children's coding robot activities and to identify the effects of coding robot activities based on collaborative problem solving study on teacher learning support behavior and children's mathematical problem-solving ability. Accordingly, the study was conducted on 43 five-year-old children for 12 weeks after a six-week preliminary study. The learning support behavior was analyzed through a two-way measurement and as for the mathematical problem solving ability, Independent t-test was carried out on pre and post-inspection of two groups for analysis. The results were as following. First, execution of this study was found to have a positive impact on the teacher learning support behavior. Second, it was analyzed that there were statistically significant differences in learning support behavior based on the time period. Lastly, it was analyzed that execution of this study showed a positive effect on young children's mathematical problem-solving ability. According to these results, the use of children's coding robot activities based on collaborative problem solving study was discussed.

국내 고정식 해상풍력발전단지의 LCOE의 범위 추정과 비용구성요소 분석

이건우,고경남 한국태양에너지학회 2023 한국태양에너지학회 논문집 Vol.43 No.4

The levelized cost of energy (LCOE) was estimated for Korean fixed-bottom offshore windfarms. The actual financial data of the two offshore wind farms were collected from the DataAnalysis, Retrieval and Transfer System (DART) of the Korean Financial Supervisory Serviceand categorized to calculate capital expenditure (CapEx) and operational expenditure (OpEx). The CapExs of the three offshore wind farms in the planning stage were added to those of thetwo actual wind farms. A capacity factor (CF) of 30% was assumed for this study, and adiscount rate of 4.5% was used, which is the Korean social discount rate. Two cases wereconsidered for estimating the LCOE using the actual OpEx data of the two Korean offshorewind farms (Case 1) and the ratio of OpEx to CapEx of the world (Case 2). A Monte Carlosimulation (MCS) was performed to estimate the LCOEs, because the financial data were notsufficient to compute the real data. CapEx, OpEx, and the ratio were extracted as randomnumbers for MCS. To clarify the features of the cost components of offshore wind farms, theLCOE was divided into levelized fixed costs (LFC) and levelized variable costs (LVC). Consequently, the LCOEs for Cases 1 and 2 are 189 and 193 USD/MWh, respectively. TheLVC for the two cases were 65 and 57 USD/MWh, respectively. The LCOE of Korean offshorewind farms was higher than that worldwide, except for that of Japan.