실내공기 미세먼지농도의 시각화를 위한 통합적 구현방법

이현수(Hyunsoo Lee),이상익(Sangik Lee),정영택(Youngtaek Jeong),이진국(Jinkook Lee) (사)한국CDE학회 2015 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2015 No.동계

평면 스케치 딥러닝 학습모델 구축과 공간디자인 활용 - 평면 스케치 인식 기반 설계초기 BIM 모델 자동생성 모듈 개발 중심으로 -

조단규 ( Cho Dahngyu ),이진국 ( Lee Jinkook ) 한국공간디자인학회 2021 한국공간디자인학회논문집 Vol.16 No.3

(연구배경 및 목적) 최근 건설 산업에서 4차 산업혁명 관련 기술의 활용이 요구됨에 따라 디지털 기술 및 데이터 기반 사업으로의 전환이 중요해지고 있는 실정이다. 현재 설계 분야에서 활용되는 데이터들은 다양한 형태로 존재하여 누적된 설계정보를 관리 및 추후 활용하기 어렵다. 이에 본 연구는 아날로그 매체인 평면 스케치를 인식하여 컴퓨터가 이해가능한 BIM이라는 디지털 매체로 전환하는 기술의 개발 및 활용을 목적으로 한다. (연구방법) 이를 위해 본 연구는 두 부분으로 나누어 진행된다: 1) 평면 스케치 인식, 2) 인식된 평면 스케치의 활용. 평면 스케치 인식을 위해서 딥러닝 기술인 Generative Adversarial Network(이하 GAN) 기반 스타일 트랜스퍼 알고리즘을 평면 스케치 인식에 적용했다. 다양한 형태로 존재하는 스케치를 중요 건축 요소들이 라벨링 된 하나의 일관된 스타일로 변환했다. 인식된 평면 스케치의 활용에서는 변화된 평면도를 바탕으로 BIM 모델을 생성했다. 평면도를 객체별로 세분화 및 벡터화하여 객체별 좌표를 추출하여 BIM 모델 객체 배치를 위하여 사용했으며, 벽체, 바닥, 문 창문 객체를 대상으로 진행됐다. (결과) 본 연구의 결과로 평면 스케치 인식 모듈을 통해 새로운 평면 스케치를 입력 받았을 때, 건축 요소가 라벨링 된 이미지가 어느 정도 유의미한 정도로 출력됐다. 이를 활용하여 Autodesk사의 Revit을 이용하여 BIM 모델 생성 프로토타입을 제작했으며, 낮은 수준의 BIM 모델이지만 기하학 정보뿐만 아니라 속성정보까지 포함할 수 있는 빠르고 정확한 3차원 모델을 얻을 수 있었다. (결론) 본 연구 및 개발은 최종 목표인 지능적 설계시스템의 개발의 하위로, 컴퓨터가 설계정보 중 하나인 평면 스케치를 사람처럼 인식할 수 있는지 알아보고 이에 대한 활용 가능성을 제시했다. 후속 연구는 현재 인식 가능 대상 범위에서 확장되어 인식이 이루어진다면 상세 수준이 높은 BIM 모델을 얻을 수 있을 것이라 판단된다. (Background and Purpose) As the construction industry requires the use of technologies related to the fourth industrial revolution, the field's data-based digital technology is highlighted. Currently utilized data in architecture exists in various forms, making it difficult to manage and use the accumulated design information for other reasons. Therefore, this study proposes developing and utilizing technologies that recognize floorplan sketches, one of the analog media, and convert them into digital media, BIM, that computers can understand. (Method) This study is conducted in two parts: 1) floorplan sketch recognition, 2) utilization of recognized floorplan sketches. In the floorplan sketch recognition phase, we propose an approach that applies Generative Adversarial Network-based deep learning techniques to transform human-drawn floorplan sketch styles into one unified form. Specifically, to recognize the floorplan sketches, the deep learning model learns various forms of floorplan sketches and the styles it needs to transform in pairs. The consistent style has essential architectural elements labeled on it : wall, floor, door and window objects. The study uses apartment floorplan images as learning data for floorplan sketch recognition deep-learning model. The apartment floor plan dataset provided by the Ministry of Land, Infrastructure and Transport Seumteo(e-ais) consists of scanned floorplan images of apartments, houses, and row houses in Seoul. In the phase of the utilization of perceived floorplan sketches, BIM models were generated based on the recognized floorplan sketches. They were subdivided and vectorized by object to extract coordinates, and this enabled BIM models to be obtained by using them as input values for Revit API. (Results) The floorplan sketches labeled with essential architectural elements were the output for the floorplan sketch recognition module, and it was successfully printed out. For the analysis of the study, the predicted image was compared by the ground truth image and showed success. For the second phase, the BIM model prototype made on the Autodesk Revit platform created a fast and accurate 3D BIM model when the recognized floorplan sketches were given input. The created model is low in detail, but it contains the geometry information and the property information, making it an easier way for future use. (Conclusion) This research and development is a sub-development of the overall intelligent design system. It identifies whether computers can recognize one of the design information, floorplan sketches as human beings, and suggests its potentials. Subsequent studies are believed to obtain a BIM model with a high level of detail if recognition is achieved by scaling out of the current recognizable target range.

코로나19로 인한 유통산업 환경변화와 유통규제 전망

최유경(Yukyong Choe),이진국(JinKook Lee),김정욱(Jungwook Kim) 서울대학교 공익산업법센터 2021 경제규제와 법 Vol.14 No.2

국내 유통시장은 코로나19 발발 이전부터 온라인쇼핑 부문이 빠르게 성장하고 있었으며 기존 오프라인 점포 위주의 성장⋅영업 전략에 커다란 변화가 진행 중이었다. 이러한 구조변화 가운데 발발한 코로나19 사태는 비대면거래와 온라인쇼핑에 대한 의존성을 더욱 가속화시켰으며, 결과적으로 온라인쇼핑은 이제 전 유통업태가 적응해야 할 새로운 규범이자 기본조건으로 자리 잡게 되었다. 더욱이 소비자들이 비대면 쇼핑의 편리성을 절감하는 등 소비채널에 대한 선호 변화를 강하게 경험하고 있어, 온라인쇼핑 중심의 구조변화는 코로나19 위기가 진정된 뒤에도 지속될 가능성이 높을 것으로 전망된다. 반면, 유통산업에 대한 규제 정책과 입법화 동향은 여전히 기존 담론에 묶여 공전(空轉)하고 있을 뿐이어서 자칫 새로운 시장 환경에 부합하는 유통산업정책의 방향성을 상실하게 될 우려가 존재한다. 이 연구는 이 같은 현상에 문제의식을 두고, 첫째, 코로나19 발발 이전 시기 국내 유통산업의 현황을 진단하여, 둘째, 코로나19가 유통산업에 미친 영향을 실증적으로 분석하고, 그 결과에 기초하여 셋째, 최근 유통기업의 판매 전략과 소비자 구매 행위의 변화를 토대로 향후 유통산업의 변화 방향을 조망하는 한편, 넷째, 새로운 시장 환경에 부합하는 유통산업 규제의 방향성을 제시하고, 이를 통해 제21대 국회에서의「유통산업발전법」 관련 입법은 물론 정부의 중장기적 유통산업 관련 규제 정책 수립에 기여할 수 있을 것으로 기대한다. Even before the unprecedented era of COVID-19, the domestic distribution market had been experiencing rapid growth in the online shopping realm. In addition, the composition of major consumer groups has changed following a demographic shift, and a significant increase in demand for mobile transactions has required a fundamental shift from offline-based sales to e-commerce to encourage the growth of the distribution industry. Distribution and retail businesses have become increasingly reliant on non-face-to-face transactions and online shopping since the COVID-19 outbreak. The sales volumes of online and mobile shopping, open markets, and online channels of large-scale distribution companies are expected to rise as these are only few places where consumption behavior is possible in the context of the pandemic. Unfortunately, however, current regulatory policies and legislative trends for the distribution industry are still closely tied to the existing offline-based discourse and remain in a state of revolution. Recognizing these problems, this study aims to first, identify market patterns of the domestic distribution industry in the pre-pandemic era, second, empirically analyze the impact of COVID-19 on the distribution industry, third, forecast the future direction of change based on the recent changes in sales strategies of distribution companies and consumer purchasing behavior, and fourth offer regulatory directions in light of the rapidly-changing market environment. Altogether, this research makes noteworthy contributions to policy debates concerning various bills put forth by the 21st National Assembly around the 「Distribution Industry Development Act」, as well as to the establishment of a mid-to-long-term regulatory landscape in Korea.

The study on the comparison of the operation performance of different type of solar collectors

김휘동(Kim, Huidong),백남춘(Baek, Namchoon),이진국(Lee, Jinkook),주문창(Joo, Moonchang) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.11

The objective of this study is to make a comparative study of the operation performance of different type of solar collectors. A flat-plate collector, a single-glazed evacuated collector and a double-glazed evacuated collector are used in this study. These 3 type of collectors are connected in series in the order of a flat-plate collector, a single-glazed evacuated collector and a double-glazed evacuated collector. This experimental facility is a kind of a solar system with a controller, a heat exchanger, a storage tank and a circulation pump. Each collector has a different collection area(flat-plate collector-6.00m² total area/5.61m² aperture area, double-glazed evacuated collector-6.04m² total area/4.92m² aperture area, single-glazed evacuated collector-7.65m² total area/5.61m² aperture area) and its performance characteristic respectively. The experiments have been demonstrated at around 70?C operating temperature(flat-plate collector inlet temperature). The thermal collecting efficiencies of each collector are obtained under the different insolation and operation condition as a result.

Study on the Operation of the Solar Heating System with Ground Source Heat Pump as a Back-up Device

김휘동(Kim, Hwidong),백남춘(Baek, Namchoon),이진국(Lee, Jinkook),신우철(Shin, Uchul) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06

The study on the operation characteristics of solar space and water heating system with ground source heat pump (GSHP) as a back-up device was carried out. This system, called solar thermal and geothermal hybrid system (ST/G), was installed at Zero Energy Solar House II (KIER ZeSH-II) in Korea Institute of Energy Research. This ST/G hybrid system was developed to supply all thermal load in a house by renewable energy. The purpose of this study is to find out that this system is optimized and operated normally for the heating load of ZeSH-II. Experiment was continued for seven months, from October to April. The analysis was conducted as followings ; - the contribution of solar thermal system. - the appropriateness of GSHP as a back-up device. - the performance of solar thermal and ground source heat pump system respectively. - the adaptation of thermal peak load - the operation characteristics of hybrid system under different weather conditions. Finally the complementary measures for the system simplification was referred for the commercialization of this hybrid system.