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성기석,최재훈,이상무,Sung, Ki-Seok,Choi, Jae-Hun,Lee, Sang-Moo 한국공간정보학회 2000 개방형지리정보시스템학회 논문지 = Journal of the Korea Open Geogr Vol.2 No.1
본 연구에서는 국가지리공간정보의 유통망의 구성 방안을 제시하였다. 국가지리공간정보의 유통망의 구성요소를 유통망 게이트웨이, 유통노드, 공간데이터 서버, 통신망, 관련 규약과 표준 그리고 사용자의 여섯가지로 나누고, 구성요소 각각의 역할과 상호관계에 대하여 기술하였다. 제시된 방안에 따라 국가지리공간정보 유통체계를 구축하여 활용함으로써 지리공간정보의 중복 구축을 방지하고, 지리공간정보의 가치를 높이며, 민간 사업자들이 지리공간정보 데이터베이스의 구축에 적극적으로 참여할 수 있도록 유도할 수 있으며 나아가 지리공간정보의 구축, 유통 및 활용 사업을 새로운 정보통신의 기반 산업으로 자리잡게 할 수 있을 것이다. The architecture of the National Geo-spatial Information Clearinghouse Network (NGICN) is suggested in this paper. We described the function and relationship of six elements of the NGICN. The elements are clearinghouse network gateway, clearinghouse node, geo-spatial data server, communication network, protocols and standards, and clients. The NGICN suggested in this research will prevent the duplication and improve the value of the database, and persuade the institutes or enterprises in the private sector to participate in producing the geo-spatial database. Finally it will setup the business of producing, circulating and utilizing the geo-spatial information as a new bases of Info-Communication Industry.
성기석(Ki-Seok Sung) 한국경영과학회 2012 韓國經營科學會誌 Vol.37 No.4
In this paper a new method of handling linear constraints for the genetic algorithm is suggested. The method is designed to maintain the feasibility of offsprings during the evolution process of the genetic algorithm. In the genetic algorithm, the chromosomes are coded as the vectors in the real vector space constrained by the linear constraints. A method of handling the linear constraints already exists in which all the constraints of equalities are eliminated so that only the constraints of inequalities are considered in the process of the genetic algorithm. In this paper a new method is presented in which all the constraints of inequalities are eliminated so that only the constraints of equalities are considered. Several genetic operators such as arithmetic crossover, simplex crossover, simple crossover and random vector mutation are designed so that the resulting offspring vectors maintain the feasibility subject to the linear constraints in the framework of the new handling method.
성기석(Ki Seok Sung),이상무(Sang Moo Lee),최재훈(Jae Hun Choi) 대한공간정보학회 2000 한국공간정보시스템학회 논문지 Vol.2 No.1
The architecture of the National Geo-spatial Information Clearinghouse Network (NGICN) is suggested in this paper. We described the function and relationship of six elements of the NGICN. The elements are clearinghouse network gateway, clearinghouse node, geo-spatial data server, communication network, protocols and standards, and clients. The NGICN suggested in this research will prevent the duplication and improve the value of the database, and persuade the institutes or enterprises in the private sector to participate in producing the geo-spatial database. Finally it will setup the business of producing, circulating and utilizing the geo-spatial in formation as a new bases of Info-Communication Industry.
수도상자육묘용(水稻箱子育苗用) 상토자재개발(床土資材開發)
신제성,최두회,성기석,김복진,Shin, Jae-Sung,Choi, Du-Hoi,Seong, Ki-Seok,Kim, Bok-Jin 한국토양비료학회 1986 한국토양비료학회지 Vol.19 No.4
This study was conducted to develop the homemade soil media adequate to raising rice seedlings for machine transplanting. A raising experiment of rice seedlings was tested on a newly developed soil medium made mainly from briquette ash compared to ones of infertile red earth and fertile paddy loams. Dry weight of rice seedlings at 36 days after seeding was slighly lower in the plot of briquette ash that in soils, however, it was quite good in the plot of briquette ash mixed with zeolite and diatomaceous earth. pH in soil media was high in briquette ash and also high in soils mixed compost compared with out compost treatment, resulting in higher occurrence of damping off or physiological disorder. Good rice seedlings could be raised in soil media without compost and briquette ash mixed with zeolite diatomaceous earth. 수도육묘용(水稻育苗用) 상토(床土)의 자가제조이용(自家製造利用)을 목적(目的)으로 상토개발(床土開發)을 연탄재를 활용(活用)하여 수행(遂行)하였으며 일반(一般) 논양토(壤土) 및 산양토(壤土)를 대조(對照)로 하여 육묘시험(育苗試驗)을 한 결과(結果) 연탄재 단독(單獨)에서는 건물중(乾物重)이 다소 떨어졌으나 연탄재+제오라이트, 연탄재+규조토(硅藻土)에서는 대조(對照)와 대등(對等)하였다. 한편 상토(床土)의 pH는 연탄재단독(單獨)과 토양(土壤)에 퇴비(堆肥)를 혼합(混合)한 상토(床土)에서 높아 립고병(立枯病)이 발병(發病)되었다. 토양(土壤)에 퇴비(堆肥)를 혼합(混合)하지 않고도 양묘(良苗)의 육성(育成)이 가능(可能)하였으며 특(特)히 연탄재를 이용(利用)하여 제조(製造)한 상토(床土)에서도 양묘(良苗)의 육성(育成)이 가능(可能)하였다.
Urban Air Mobility (UAM) 실내 공간 디자인을 위한 최적의 치수 가이드라인 제시
박채원(Chae-Won Park),공용구(Yong-Ku Kong),최경희(Kyeong-Hee Choi),조민욱(Min-Uk Cho),김승연(Seoung-Yeon Kim),성기석(Ki-Seok Sung),김계윤(Kye-Yoon Kim),김민정(Min-Jung Kim) 대한인간공학회 2021 大韓人間工學會誌 Vol.40 No.2
Objective: The purpose of this study is to derive design dimensions for each spatial factor based on subjective satisfaction evaluation using variable UAM (Urban Air Mobility) Mockup and to suggest guidelines for UAM internal space design. Background: Urban Air Mobility (UAM), which enables transportation of cargo and passengers in urban areas, has been proposed as a solution to the problem of economic loss and environmental pollution caused by ground transportation worldwide. Despite the active development in many companies such as UBER, Airbus, and Hyundai, the research on UAM internal space design is very insufficient compared to the research on UAM’s technical factors and the design guidelines for each internal space factors based on user satisfaction are needed. Method: In this study, 100 adults in their 20s were tested by variable UAM Mockups based on existing design guidelines for aircraft and helicopters and 5 to 95%ile of body dimensions presented in Size Korea. As independent variables, Seat Angle (0~30°), Seat Width (390~470㎜), and Seat Height (350~450㎜) were selected, and as dependent variables, Subjective Rating Level and Space/Seat Satisfaction for Seat (front/rear) Distance, Side Allowance Distance, and Ceiling Height. Subjective Rating Level for each factor was measured in three categories: First Uncomfortable Distance (FUD), Lowest Acceptable Distance (LAD), and First Comfortable Distance (FCD), and a survey of Space/Seat Satisfaction was conducted whenever each point was reached. Results: As a result of the experiment, the highest satisfaction with Space/Seat Satisfaction was shown at the Seat Angle 20°, Seat Width 450, 470㎜, and Seat Height 400㎜. A guideline for each Subjective Rating Level (FUD, LAD, FCD) for Seat (front/rear) Distance, Side Allowance Distance, Ceiling Height are derived. Conclusion: It is assumed that the appropriate design guidelines and methods derived for each Subjective Rating Level (FUD, LAD, FCD) by combining seat design factors and cabin space design factors can be used not only for UAM but also for vehicle and aircraft internal design. Application: If the Subjective Rating Level (FUD, LAD, FCD) is appropriately considered, it can be used as a guideline to satisfy both user satisfaction and optimization of UAM internal space design.