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고온다습 기후지역의 공장건물의 자연환기 적용에 따른 환기 성능 분석
김대웅(Kidm Dae-Ung),최진호(Choi Jin-Ho),서혜수(Suh Hye-Soo),이종인(Lee Jong-In),김병선(Kim Byung-Seon) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Differing from some cold climate areas, Buildings under a climate of high temperature and Humid have an efficient form which introduces outdoor environment interacting with indoor environment. Besides, As more serious problems of energy shortage, it is required that the system which take advantage of energy from natural resources. Especially, plant buildings occurring many environmental problems frequently such as condensation in the ceiling and stratification of temperature need an efficient natural ventilation system introducing hot and humid outdoor air through ventilation inlet passes through the upper region as a consequence of stack effect in large apace and pressure difference. In this paper, the natural ventilation performance in a plant is analyzed under a climate of high temperature and humid and examined using CFD simulation. The result would be utilized as specimen to plan the natural ventilation system in newly constructive buildings having large space.
바이오모픽 개념을 적용한 유아교육시설 계획에 관한 연구
김대웅(Kim, Dae Ung),김경순(Kim, Kyung Soon) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1
The purpose of this study is to theoretical review and case analysis of the Architectural Planning of Early Childhood Education Facilities Based on the Perception of Existential Space in Biomorphic Architecture. Through a theoretical review of biomorphic architecture and existential space, the characteristics and personality types of space are confirmed, and theoretical considerations and case analysis of early childhood education are conducted.
초고층 주상복합 건물의 냄새확산 방지를 위한 주방후드 개선 및 강력 배기 시스템 개발
김대웅(Kim Dae-Ung),이승민(Lee Seung-Min),이중훈(Lee Joong-Hoon),김태연(Kim Tae-Yeon) 대한건축학회 2007 대한건축학회논문집 Vol.23 No.10
Recently, In Korea, high-rise residential buildings have many environmental problems such as re-circulation of exhausting flow in kitchen, stack effect by pressure differences of each floor, and low air change rate. Since kitchen is the main place that pollutes a residential unit, pollutants spread from the kitchen have to be considered in the design stage. During cooking and meal-time, odors from food spread out rapidly. As a result, residents can perceive odors easily and be unpleasant. In the first stage of the study, odor-spreading phenomenon has been measured by tracer gas method. CFD simulation has been performed with the same condition. To prevent odors from spreading out, new ventilation systems are developed to solve odor problems. 2 types of ventilation system and a high-powered exhaust system are produced and using these ventilation system, odor problem could be reduced greatly.
허재두,김대웅,윤병남,Heo, Jae-Du,Kim, Dae-Ung,Yun, Byeong-Nam 한국전자통신연구원 1992 전자통신동향분석 Vol.7 No.2
본 고에서는 통신 시스팀 개발자의 입장에서 본 PC통신의 현황과 문제점을 설명하고자 한다. PC에 의한 데이터 통신은 비동기식을 따른 것이 대부분이기 때문에 문자 코드의 처리와 자동 다이얼링의 문제점을 지적하고, 통신 S/W가 겸비하여야 하는 Intelligency에 대해서 언급하고자 한다
공진기의 결합 특성을 개선한 Push-Push 발진기 설계
도지훈,김대웅,김대희,윤호석,강동진,홍의석,Do, Ji-Hoon,Kim, Dae-Ung,Kim, Dae-Hui,Yun, Ho-Seok,Kang, Dong-Jin,Hong, Ui-Seok 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.3
본 논문에서는 새로운 구조의 push-push 발진기를 제안하였다. 제안된 구조는 각각의 발진기를 HDRO(Harmonic Dielectric Resonator Oscillator)로 설계하여 push-push 구조로 결합시킴으로써 기본 주파수 억압 특성을 개선하였고, 고조파 성분의 출력 파워를 향상시켰다. 이에 따른 위상 잡음 증가를 공진기와 병렬 선로 사이의 결합 특성 개선을 통하여 보상하였다. 실험 결과 18.7 GHz에서 9.32 dBm의 출력을 나타내었고, 기본 주파수 억압 특성은 -47.2 dBc, 위상 잡음은 -99.86 dBc@100 kHz의 특성을 보였다. This paper introduces a new type push-push harmonic dielectric resonator oscillator. Proposed oscillators are utilized by HDRO(Harmonic Dielectric Resonator Oscillator) which are combined in push-push structure. As a result, fundamental signal suppression ratio and output power of harmonic signal has been improved. The increase of phase noise is compensated by improving coupling characteristic between resonator and parallel microstrip line. The proposed push-push HDRO shows the output power of 9.32 dBm, the fundamental signal suppression of -47.2 dBc and phase noise of -99.86 dBc at 100 kHz offset frequency and 18.7 GHz center frequency.
KT-MAiL 시스팀에서의 비동기식 확장 가입자 접속 실현
허재두,김대웅,Heo, Jae-Du,Kim, Dae-Ung 한국전자통신연구원 1992 전자통신 Vol.14 No.4
본 고에서는 X.25 동기 프로토콜(1)을 이용한 KT-MAiL 서비스의 확장 네트워킹의 실현에 대해 기술하고, 많은 사용자에게 서비스를 제공하기 위한 KT-MAiL 호스트 시스팀과의 인터페이스 및 실현후의 패킷 전송 성능에 대해 기술하고자 한다.