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오피스빌딩의 수직·수평 증축 리모델링을 위한 건물 탄소배출량과 에너지소요량 관계 분석
권주현(JooHyeon Kwon),오준걸(JoonGul Oh) 한국생태환경건축학회 2024 한국생태환경건축학회 논문집 Vol.24 No.4
Purpose: This study aims to propose sustainable transition plans for aging office buildings by predicting carbon emissions and energy consumption based on increased building sizes during remodeling or reconstruction. Method: The methodology of this research includes: ① Setting up analysis models for large, medium, and small-scale office buildings based on the current status of office buildings on Teheran-ro in Gangnam-gu. The increase in possible building size is limited to 30% of the existing gross floor area. ② Using Autodesks Revit program to model and analyze the energy consumption and carbon emissions of each analysis model. ③ Analyzing the carbon emissions and heating and cooling energy consumption of office buildings for each scale-specific transition alternative. Result: The differences in operational carbon emissions and total energy consumption for different transition alternatives are minimal. Planning alternatives based on building size are necessary due to specific range values for each scale. Average growth rates are 8.4% for small, 5.0% for medium, and 3.0% for large office buildings. As floor numbers increase, both operational carbon emissions and energy consumption per unit area decrease, with carbon emissions decreasing more significantly than energy consumption. Future research will include active design elements and embodied carbon considerations.
『三國史記』에 보이는 4~5세기의 加耶와 三國과의 관계
권주현 동국대학교 WISE(와이즈)캠퍼스 신라문화연구소 2011 新羅文化 Vol.38 No.-
Daegaya built up the base for a full-scale growth together with the upheavals risen in the Gaya society at the end of the 3rd century. Without any engagement in disorders of the southern small Gaya states, which named 'Posangpalguks' War(浦上八國戰爭)', Daegaya achieved a stable growth in the inland area. When the King Geonchogo of Baekje secured the west-south seaway at AD 369 and advanced to the Gaya region, Daegaya was appeared as one of the seven Gayas. This reflects the Dagaya's growth in that time. Since then, the foreign relation of the Gaya was represented as pro-Baekje tendency, and this shaped a balance of power in the Korean peninsula together with Silla's subordinate tendency to the Goguryo. In the beginning of 5th century, Gaya states allying with the Baekje and Japan fighted against the Koguryo-Silla unite forces, and Daegaya played a leading role in this war. The most notable appearances of Gaya society during 4th through 5th centuries as can be seen through the Literature Sources are women's activities. 『NihonShoki(日本書紀)』 describes that Gijeonji(旣殿至), the sister of Garaguk king, played an active part to save the royal family when Garaguk was jeopardized. She was supposed to be a priest. Also the Queen Hur(許王后) or Yongnyo(傭女) of the Geumguan Gaya were the same characteristic women. The Michuwangnyo(味鄒王女) who became the queen over the era of two kings of Silla, King Namul and King Silsung, had the authority of the priest as well, and she is supposed to be the heroine of the northen mound of the Hwangnamdaechong(皇南大塚). Meanwhile, the high concentrativeness of excavation toward the central area of Daegaya for the Pottery Stand with Snake-Figurines, which were used for ceremonial rituals, means that the political power of Daegaya came from Shamanistic and Religious aspects. On the other hand, Daraguk had military forces and technologies being equal to those of Daegaya, but it was overwhelmed by the Shamanistic and Religious power of the King Daegaya. Consequentially Daraguk contributed for Dagaya to mobilize a coalition of Gaya states. Also, King-Gashil's invention of Gayageum in the 6th century shows the ideological shamanistic and religious inclinations of the Dagaya King. The ideological background involved in Gayageum had been already formated in the 5th century in which Gaya were having their heyday. Three kinds of Bronze Chodu(鐎斗) take notices as archeological specimens to show the appearance of foreign cultural exchanges of the Gaya states. They are supposed to be brought into the Gaya through the Baekje. The Samguksagi(三國史記) does not mention about any relationships between Gaya and Baekje, except the Baekje-Gaya unite forces' supports to the Silla in the Mijilbu(彌秩夫) at AD 481. The Chodu(鐎斗) represents as a Material evidence that those supports was realized on the assumption of the mutual political and cultural exchanges of both countries.
터보팬 및 터보샤프트 엔진 시운전실 Correlation 시험 절차 비교와 분석에 관한 연구
권주현(Juhyeon Gwon),고강명(Kangmyung Ko) 항공우주시스템공학회 2024 항공우주시스템공학회지 Vol.18 No.1
Engine test cell should provide controlled test environment to properly verify requirements of engine performance and operational characteristics. However, since test cells cannot be perfectly identical to each other, new test cell requires processes to verify reliability of test results and correct differences through correlation testing using a baseline test cell. This paper studies about what should be considered when correlation testing is performed based on commonalities and differences between turbofan and turboshaft engine. It provides examples of correlation test procedure. In the future, it is expected that this study will help set up a standard that can certify test facility according to engine type.