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김형은,가납 성남 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1
In this report, when the construction method was selected, the methodology by which an appropriate construction method was selected under a variety of restriction conditions was examined, and the systematization was done by Prolog. The heat combination of construction methods in the construction method of each work which was able to be applied to conditions of the building condition and the design conditions, etc. which had been given by logical modeling was able to be requested. I addition, the possibility of an effective construction method selection system which requested an economical alternative i and the best idea by comparing costs in the construction condition was examined.
3차원CAD情報에 근거한 部材의 設置順序 推定 및 工程의 可視化
김형은,카노나루오 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.5
Virtual Construction Site System aims to develop the rational planning procedure for construction planning, based on the three dimensional data of components of a building using three-dimensional CAD systems or Virtual Reality systems.In this paper, the authors developed the inferring logics for the sequence of assembling components of a building based on the three-dimensional CAD data. In order to infer the sequence, three dimensional data such as position, direction, scale of components and the relationships to another components are collected from three-dimensional CAD System. Then the logics to infer the sequence developed were applied to the above data set.The authors applied the logics to planning for steel erection works of a building construction, and proved the validity of the logics, producing rational sequence of the erection works of columns and beams. In addition, the authors clarified the possibility to create the construction schedule based on the network with each erection time which was estimated from the CAD data and a crane attribute.
BTL사업 종합관리 시스템 구축을 위한 기능 분석 -학교시설을 중심으로-
김형은 한국디지털건축·인테리어학회 2013 한국디지털건축인테리어학회 논문집 Vol.13 No.1
BTL business-related systems were developed by the Ministry of Education, Korea Development Institute, Korea Education Development Institute. These systems were effectively support to BTL projects schools that expanding in size. However, compatibility of information is difficult between systems that specific information system developed for the purpose of functional redundancy. In this study, operational readiness, facility management, operations and the assessment phase are divided in the BTL school projects process. And the business functions were analyzed in the related systems. In addition, we are contributed to improve standards and the school BTL business processes to improve the reliability of the process.
건축생산에 대한 Virtual Reality기술의 활용화에 관한 연구 : 사진화상의 수집 및 VR시스템에 대한 응용
김형은,채성호,嘉納成男 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
Virtual Construction Site System(hereinafter VCSS) provides a construction planning system that allows for the time marching assessment of construction process in virtual reality space prior to actual works in a job site. In this study the comparison between the real picture taken at an actual job site and the virtual images corresponding to them was carried out to estimate validity of the proposed VCSS. Particularly this paper demonstrates the capability of a prototype system by acquisition of the real photo from an actual job site.
김형은,김용석 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.5
To produce doenjang with enhanced biologicalactivities, doenjang was prepared by fermenting regularsoybeans (RS), germinated soybeans (GS), and germinatedblack soybeans (GBS) for 90 days. The isoflavone contentsin GS and GBS-doenjang were slightly higher than in RSdoenjangin the early stage of fermentation. The DPPHradical scavenging activity of GBS-doenjang was highestat 70.00% after 30 days of fermentation. The angiotensinconvertingenzyme (ACE) inhibiting effects increased asthe fermentation period progressed, and were significantly(p<0.05) higher in GBS-doenjang (58.69%) than in otherpreparations after 75 days of fermentation. The greatestfibrinolytic activities were 127.59 and 100.00% in nontreatedGBS-doenjang and GBS-doenjang treated for 30min at 55ºC, respectively. There were significant (p<0.05)correlations between the total isoflavone content and theantioxidant activity (0.779) and between the isoflavonecontent and the ACE activity-inhibiting effects (0.669). GBS-doenjang exhibited greater antioxidant activities,ACE-inhibition, and fibrinolytic activities than RS and GSdoenjang.
태양광 모듈의 과열 방지용 공랭형 스털링기관 냉각 시스템 개발
김형은,박찬우,추진경,금동엽,박실로,김정민,김대진,Kim, Hyoungeun,Park, Chanwoo,Chu, Jinkyung,Keum, Dongyeop,Park, Silro,Kim, Jeongmin,Kim, Daejin 대한기계학회 2014 대한기계학회 논문집. Transactions of the KSME. C, 산업기술과 혁신 Vol.2 No.1
태양광 모듈의 과열을 방지하여 효율을 향상시키기 위해 스털링기관을 이용한 새로운 공랭식 냉각 시스템을 개발하였다. 베타 타입 스털링기관에 냉각팬을 연결하고 태양광 모듈의 뒷면에 반원형의 에어가이드를 부착함으로써 스털링기관 작동에 의해 발생된 강제대류가 에어가이드를 따라 이동하면서 태양광 모듈의 후면을 냉각하는 방식이다. 할로겐 조명을 활용한 하절기 모사 성능 평가 실험 결과 본 연구를 통해 개발된 새로운 냉각시스템을 적용할 경우 태양광 모듈의 온도가 냉각을 적용하지 않은 경우에 비해 약 $12^{\circ}C$ 낮아지고 출력 전압은 약 25% 향상되었다. In this paper new air-cooling system utilizing Stirling engine was proposed for improving efficiency in solar photovoltaic power generation. The solar cell plate was equipped with semi-circular channel for air flow on the backside. Beta-type Stirling engine was installed on the plate and its flywheel was connected to a motor fan by a transmission belt. A forced convective air flow for heat radiation was generated by the operation of the self-starting Stirling engine. The performance tests for power generation of solar cell with or without the proposed air-cooling system were conducted under halogen lamp. From the experimental results, it was found that decline in output voltage of the solar cell with proposed cooling system was 25% less than that of the solar cell without cooling system.
Design of an H-band Frequency Tripler and Buffer Amplifier IC in 250-nm InP HBT Process
김형은,장영민,전영채,정진호 한국과학기술원 반도체설계교육센터 2022 IDEC Journal of Integrated Circuits and Systems Vol.8 No.4
In this paper, we propose the design of an H-band(220-330 GHz) frequency tripler, buffer amplifier IC(Integrated Circuit) using 250-nm InP HBT technologies. H-band frequency tripler is designed by using triple-push technique and is composed of 3-way 120° power divider and coupled line. Simulated result of H-band tripler shows -3 dBm output power while measured result shows between -9 and -6 dBm output power. Spectrum result of H-band tripler is down-converted by H-band harmonic mixer but it shows H-band tripler operates well at H-band. To decrease buffer amplifier chip area, we use cascode method in buffer amplifier design. IC with H-band tripler and buffer shows 5.6 dBm output power and -3.6 dB conversion gain. Finally, to decrease performance degradation due to off-chip transition, we will design on-chip transition connecting waveguide and microstrip.