항공용 안테나 하이브리드 모노펄스 레이다 시스템의 실용적 표적 방위각 추정 방법

김진우(Jin-Woo Kim),윤재혁(Jae-Hyuk Youn),노수현(Soo-Hyun Rho),이종은(Rho1?Jong-Eun Lee),전영범(Yeong-Beom Jeon),옥재우(Jae-Woo Ok),유응노(Eung-Noh You),윤상호(Sang-Ho Yoon),신현익(Hyun-Ik Shin) 한국전자파학회 2018 한국전자파학회논문지 Vol.29 No.9

항공용 안테나 하이브리드 모노펄스 레이다 시스템을 이용하여 지상 이동표적 탐지 시, 표적의 방위각 정확도는 시스템 내 채널 간 위상 불균형에 따른 모노펄스 기울기 추정 정확도에 지배적으로 영향을 받는다. 본 논문에서는 안테나와 180도 하이브리드의 물리적 길이 차이에 의한 위상 불균형을 효과적으로 보상할 수 있는 방법을 제안 하였다. 비행시험을 통하여 제안된 방법의 성능을 검증한 결과, 보상 전보다 유의한 성능개선 효과를 확인할 수 있었다. The accuracy of extracting the azimuth angle of a target is significantly affected by the error in the mono-pulse ratio of the air-borne antenna hybrid mono-pulse Radar system. This error is strongly induced by the phase imbalance between the channels of the system. In this paper, a method is proposed for effectively calibrating the phase imbalance caused by physical differences between the RF channels from the antenna to the 180° hybrid. Through a flight test, it was confirmed that the accuracy of the azimuth angle of the target is improved by using the proposed method.

韓國 歸化植物의 特性 및 造景的 價値分析에 關한 硏究

盧載鉉 又石大學校 附設 造景計劃硏究所 1997 造景硏究論叢 Vol.2 No.-

Recently, as the trade with foreign countries has become more and more active, the number of foreign travelers has rapidly increased and the urbanization of our territory has been more and more enlarged, many alien plants is distorting and disturbaning our natural ecosystem. Most of the plants which can easily be found and grown all over the vegetation area are naturalized plans. Many of which are not still identified to plant designer or green keeper and so there has been much difficult in trying to maintain for vascularimage in urban green space. The purpose of this study is to clarify the characteristics and landscape value of naturalized plants in Korea, for the foundation of urban green space weed control. Characteristics o the naturalized plans in Korea was studied based on the references reported by many authors from 1895 to 1996. 208 species in 34 families including the newly recorded naturalized plants were described in above reports. Those were classified by their life form. height blooming period. origin. landscape value and objects for weed control.

江湖歌辭文學에 나타난 先人들의 風流景觀相

노재현,신상섭,허준 한국정원학회 2002 한국전통조경학회지 Vol.20 No.2

The purpose of this study is to comprehensively understand the predecessor’s typical perspective and internal meaning based on Pung-Ryu(風流) in Gang-Ho Gasa(江湖歌辭) literatures. In addition, it seeks to understand more fundamental consciousness of traditional beauty by approaching in a different manner. Almost of in the first half(序詞) of poems, authors peaceful life in his hermitage is described. They residence were Jung(亭子) around mountain and river. On the Jung, they can take a rest to contemplate and to feel the natural features and the picturesque scene, and can give a meaning of the place to make a seasonal view. In the latter phrase(展開部) of poems, it is identified that everything is determined by its own way of natural being.And they showed that his thought about dwelling location may be determined by the way of Pung-Ryu. In the last half(結詞) of poems, it is identified that their pursued an utopia and transcended himself without time and space. That is closely related to their personal mind for the affinity with nature and pusuit of freedom. And their life of Pung-Ryu are understood as escaping activity to solve his mind stress appeared in real life. Therfore, the world of Pung-Ryu in their literatures is transcendental and immanent praiseworthy for nature. The chracteristics of Pung-Ryu in Gang-Ho Gasa literatures falled into the three class hierachy such as a natural prise(自然讚美), a convivialty-self complacency(自與自得) and a singing and dancing-drinking-fishing(彈絃一樂). First of all, in their life, nature is reconized as an item existing as an object as well as a subject which can be separated from human beings. An aspect of ‘Pung-Ryu’ in Gang-Ho Gasa literatures are one of the representative sense fo beauty.

여름철 동중국해의 수괴분석과 대만난류의 북상경로

현경훈,방익찬,이재학,노홍길 제주대학교 해양연구소 1997 해양자원연구소연구보고 Vol.21 No.-

매복 하악 제3대구치의 외과적 발거에 영향을 미치는 방사선학적 변수

김동현,박성빈,장익준,송재철,진병로 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.3

Purpose : The purpose of this study was to determine radiologic variables affecting extraction of impacted mandibular third molar. Materials and Methods : This study was investigated on 44 consecutive extractions of unilateral impacted mandibular third molars (Male;34, Female;10, Mean age;24.98, Age range;19-35). Fourteen radiologic variables, which were actual value except only one, were evaluated to establish their relation to the operation time. The Pearson correlation coefficient and Stepwise procedures for regression analysis were carried out. Results : Eight variables (depth, angulation, ramus width, relationship to the second molar, distal ramus depth, mesial ramus depth, mesial periodontal ligament width and follicle) showed a statistically significant relation to the operation time(Pearson correlation coefficient, p<0.05) . Two variables, depth and mesial periodontal ligament width, showed the most powerful and just relation to the operation time(r2 = 0.349, p<0.05). Conclusion : This study shows that our results can help general practioner to estimate the operation time of extraction of impacted mandibular third molars by measuring two radiologic variables ; depth and mesial periondontal ligament width.

디지털 스튜디오의 효율적인 시스템 구성과 운영관리 방안 연구

황현진,장노순,이재홍 강원대학교 정보통신연구소 1998 정보통신논문지 Vol.2 No.-

This paper presents the efficient system architecture of a digital studio and its operation and maintenance. This paper shows the overview of the system components and explains their technical features in detail, and discusses system installation and operational test procedures. And then technical requirements and procedural schemes for system implementation have been proposed and the operational organization, training programs, and maintenance planning have been qeneralized and analyzed. It shows that essential points for constructing the optimum system are to follow a supply-demand curve of its markets and industries and to make technical innovations of system implementation. Training programs for system operators and administrators are also very important factors. The integration of such factors makes it possible to construct the efficient a digital studio.

우관상동맥 개구부 완전 폐쇄가 동반된 대동맥 판상부 협착증 1례

임상현,김종진,김희열,진승원,전희경,노태호,채장성,김재형,홍순조,최규보,윤정섭,김치경 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

기술교과 교육 제도 및 연구의 국제적 동향 : ICTES '95 발표 논문을 중심으로 through Analyzing of Papers Presented at the ICTES '95

이재원,김진순,류창렬,노태천,최완식,최유현,송일민 충남대학교 공업교육연구소 1995 論文集 Vol.18 No.1

The purposes of this study were: (a) to analyze the papers presented at the ICTES according to the papers' representing countries and their main subjects, (b) to analyze the educational systems of the countries in technology education, and (c) to review the international trends of technology education through the papers presented at the conference. The papers(64 total) presented at the ICTES could be classified into eight countries of papers representing Japan(37), Taiwan(8), Korea(6), U. S. A.(3), India(3), Philippines(3), China(2), Singapore(2). The main subjects the papers dealt with could also be classified into educational system/history(9). curriculum/objectives and contents(9), international activities(9), methods/teaching-learning process and teaching materials and new media(40). Followings were the major and new issues presented at the ICTES: (a) Introduction of each country's technology education system. (b) Proposition of a new framework for technology education and a world core curriculum in technology education. (c) Creativity and problem-solving for the instructional method of technology education. (d) Methods and utilization of high technology media in technology education. (e) Necessity of engineering concept in technology education in technology oriented society. (f) Proposition of philosophical direction of technology education based on famous Asian philosophers.

全北地域 마을 園林의 特性에 관한 硏究

박재철,노재현 又石大學校 1995 論文集 Vol.17 No.-

This study was carried out to investigate the general status, dominant plants, utilization, protection and maintenance of village grove in Chunbuk province, Korea. 20 village groves were selected and studied for the purpose of this study Judging from the data gathered by pilot survey, we could discover that the village grove having a valuable meaning in surveid district is being overused by the mixed landuse farm serving and rural activity pressures of community users. But the village grove contribute to form a very normal rural landscape in korea, because the village grove is a intermediate space between village and natural world. Because the shape and the meaning of the village grove is almost disappearing or disturbing, it is important for us as a environmental planner to study the meaning of village grove in order to reconstruct and preserve historic heritage. Also it could be infered to finding the architype of local or regional park in Chunbuk province as an open space.

정읍지역 도로 주변림의 식생구조에 관한 연구 : 김제 원평에서 정읍 감곡 사이의 지방도 주변림을 사례로 Case study on the Roadside Forests from Wonpyung to Kamgok

박재철,노재현 又石大學校 1994 論文集 Vol.16 No.-

This study was executed to investigate and analize the roadside forrests. 14 roadside forests from Wonpyung to Kamgok were investigated to identify the vegetation structure as a sequential research of pervious one(A study on the Roadside forests in Jungeup- Gun, Chunbuk-Do). They were classified 3 commmunities of Pinus densiflora, Pinus thunbergii, Pinus rigida by analysis of dominent species. Inter-analysis between each community was implemented. As results, it was clarified that T-2 layer and shrub layer in three communities is very poor. T-1 layer and herb layer was plenty of vegetation. Pinus densiflora. Pinus thunbergii and pinus rigida were appeared in canopy layer in each community. The degree of similarity in community was lower than the natural forest near the site.