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김경환(Kyung Hwan Kim),윤종화(Jong Hwa Yoon) 대한의료기공학회 1996 醫療氣功 Vol.1 No.1
Recently, many study of the Kigong, but that is in the point of the view in Taoism and Ki itself. So, it thought that the study in comparison Kigong(Taoism) to Oriental Medicine is insufficient. I thought much of that there are many description of the movement and the effect in the the body in the old book written Taoism, Doinbub(Physical and breathing exercise), and that there are many relation the circulation of the Ki to 12 Jung-kyung(12 regular meridians). Then I give a report of the result that the study is compared in Taoism with in Oriental Medicine. The results were as follows, 1. In the training of Doinbub, the effect is regulating muscle and skeleton, promote wi(constructive) system and ki(superficial) system, promote the ki and blood, strengthen the body resistance and dispel the invading pathogenic factors and preventive treatment. 2. In the training of Doinbub, the movements were much related to 12 regular Meridians and Muscles along the 12 meridians. 3. In the training of Doinbub, the effects were much related to 12 regular Meridians and Muscles along the 12 meridians. 4. It is possible that we set pathological syndrome to Doinbub(Physical and breathing exercise).
정서에 의해 유발된 자율신경계 반응의 일관성 및 정서-특정적 자율 신경계 반응 패턴 확인
이경화 ( Kyung Hwa Lee ),장은혜 ( Eun Hye Jang ),석지아 ( Ji A Suk ),손진훈 ( Jin Hun Sohn ),방석원 ( Seok Won Bang ),김경환 ( Kyung Hwan Kim ),이미희 ( Mi Hee Lee ) 한국감성과학회 2001 추계학술대회 Vol.2001 No.-
정서와 생리반응 (자율신경계 반응) 간의 관계에 관하여 성인을 대상으로 최근가지 많은 연구가 행해져 왔다. 본 연구에서는 동일한 실험참여자를 대상으로 일정 기간 동안 여러 회의 반복실험을 통해 정서(기쁨, 슬픔, 분노, 공포, 혐오)에 따른 자율신경계의 반응의 일관성과 정서별 자율신경계 반응 패턴을 규명하고자 하였다. 본 실험에 앞서 저서를 유발하기 우한 도구인 정서유발자극세트와 정서에 대한 심리반응을 평가하기 위한 정서평가척도가 제작되었다. 정서유발자극세트는 2-4분 정도의 각 정서 장면이 포함된 총 5개의 동영상 장면들이다. 예비실험을 통해 70% 이상의 적합성 및 효과성을 가진 4개의 세트를 추출하여 본 실험에 사용하였다. 본 실험은 남녀 대학생 12명을 대상으로 4회 반복해서 실시되었다. 실험참여자들은 각 정서 장면을 시청 후, 유발된 정서에 대한 심리적인 평가를 하였다. 측정한 자율신경계 생리반응 변수는 ECG, PPG, EDA, SKT이었다. 연구 결과, 심리반응에서 정서유발자극세트는 75% 이상의 적합성 및 효과성을 보였다. 생리반응(ECG, EDA) 분석 결과, 정서에 따른 자율신경계 반응은 회기별로 일관적이었으며, 각 정서별로 특정적인 생리반응 패턴을 가지는 것으로 나타났다.
김경환(Kim Kyung-Hwan),김남돈(Kim Nam-Don),오건수(Oh Kun-Soo),송정화(Song Jeong-Hwa) 한국디자인학회 2010 한국디자인학회 학술발표대회 논문집 Vol.2010 No.10
Korea has experienced a fast economic growth during the 70s and the 80s, In the 90s, increased interest for better lifestyle has led to policy assistances in the field of culture and arts. Throughout the 80s and the 90s, there had been multilateral efforts to improve the poor cultural environment. Under this background, starting from 1983, central and each local government started to establish culture & arts centers to clear overemphasis of cultural facilities in the capital city and promote regional characteristics. Most culture & arts centers that were built over 20 years ago are not only deteriorated but have limited usage. The reverberation time for most of these buildings are as short as around 1.00 second. Therefore, most culture & arts centers are bringing economic loss by limits of cultural activity. Based on this information, many culture & arts centers are in need to be remodeled into multipurpose performance halls, and it is crucial to review the original plan when being remodeled. Also, when construction new buildings, the lack of specific methods for designing multipurpose performance halls lead to various changes in design after review. Therefore, this study will utilize a checklist for remodeling and constructing multipurpose performance halls to efficiently design quality multipurpose performance halls. This method is expected to reduce economic loss and will be time-wise efficient.
냉동벤치 시스템을 이용한 자동차 에어컨 냄새평가에 관한 연구
김경환(Kyung Hwan Kim),김선화(Sun Hwa Kim),정영림(Young Rim Jung),김만구(Man Goo Kim),김재호(Jae Ho Kim),박하영(Ha Young Park),이준강(Jun Kang Lee),지용준(Young Jun Jee),김기홍(Ki Hong Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As one of measures to improve the environment in an automobile, Malodor caused by the automobile air conditioner evaporator was evaluated and analyzed using lab-scale test bench. The odor was simulated with an evaporator test bench equipped with an airflow controller, air temperature and relative humidity controller. To simulate the same characteristics of odor used to occur from automobiles, one used automobile air conditioner evaporator associated with unpleasant odors was selected. The odor was evaluated by trained panels and sampled with aluminium polyester bags. Samples were analyzed by thermal desorption into a cryotrap and subsequent gas chromatographic separation, followed by simultaneous olfactometry, flame ionization detector and identified by mass spectrometry. Because compounds are concentrated before thermal desorption, such sample as odor from evaporator was able to detect trace compounds participating in odor. Compounds such as aromatic hydrocarbons, alcohols, aldehydes, and organic acids were identified. GC/FID/Olfactometry combined sensory method with instrumental analysis was very effective for odor evaluation method in an automobile air conditioner evaporator.
RSMeans와 비교한 리모델링 해체공사 표준품셈 체계의 문제점 분석 및 개선 방향
김경환(Kim, Kyung-Hwan),백화숙(Baik, Hwa-Sook) 대한건축학회 2015 大韓建築學會論文集 : 構造系 Vol.31 No.3
The demand for building remodeling is increasing because of its reduced waste, cost, and duration compared to reconstruction. As the predecessor of new construction in a remodeling project, selective demolition significantly affects the cost and duration of the overall project. However, the standard estimating system (SES) in Korea provides only limited items for selective demolition in remodeling projects. Hence, for many items that are not on the SES list, one has to adopt a similar item from the SES or employ another rule that may not be standardized. Focusing on ceilings, flooring, and walls, this study analyzes problems in the similar-item application for those missing items through comparison among SES, RSMeans, and real project data. It has been found that: the numbers of items in SES are far lower than those of RSMeans and real project data: the similar-item application has serious shortages because of production rate variance: and the production rates in SES are lower than those of RSMeans. In addition, arranging laborers in a team for a job is difficult for some works because of the laborers-per-unit work system that SES applies. In order to overcome these problems, the number of work items should be expanded with more practical production rates, and a new standard structure, such as daily output per team, should be introduced.
현대 공동주거 단지 계획에 적용된 친환경 인증요소에 관한 연구
김경환(Kim Kyung-Hwan),오건수(Oh Kun-Soo),송정화(Song Jeong-Hwa) 한국디자인학회 2010 한국디자인학회 학술발표대회 논문집 Vol.2010 No.10
The purpose of this study is to present an alternative method for resolving environmental issue associated with multiple dwelling architectural structures in the Green Building Certification System. It can be said that developers, in their desire to receive superior ratings from the Green Building Certification System, have strayed away from the original intent of resolving environmental problems through evaluation and certification. Therefore, to minimize this problem, I propose to conduct a comparative study on the apartment planning factors and the Green Building Certification System evaluation and certification factors.
박종석,박종범,김경환,하선화,한범수,김용환,Park, Jong-Sug,Kim, Jong-Bum,Kim, Kyung-Hwan,Ha, Sun-Hwa,Han, Bum-Soo,Kim, Yong-Hwan 한국식물생명공학회 2002 식물생명공학회지 Vol.29 No.4
주요 농작물에서 건강-방어용 flavonoids 생성, phytoalexin (isoflavonoid, flavanol, proanthocyanidin)의 생성 및 소절을 통한 식물의 저항력 증대, 색소 (flavonol, anthocyanin)의 합성에 의한 자외선 방어, nod 유전자 inducer (flavones, isoflavones)의 대량 발현에 의한 혹 형성 (nodulation) 효율증대 등은 대사공학 적으로 향상 가능한 부분들이다. 파란 꽃을 개화하는 품종이 카네이션, 국화, 장미 등 중요 장식용 화훼작물들에는 결핍되어 있는데,이는 F3'5'H 유전자가 없어서 파란색 delphinidin 색소를 생산할 수 없기 때문으로 추정된다. 따라서 F3'5'H 유전자를 형질전환 하여 이러한 제한을 극복하고 delphinidin 유도체 생산이 가능하게 되면 파란색 꽃의 생산 가능성을 증대시킬 수 있게 된다. 또한 영양학적인 측면에서 이미 중요한 생리적 기능이 밝혀진 catechin을 비롯한 proanthocyanidin 과 anthocyanin은 의약품 및 식품첨가제 등 다양한 분야에서 크게 시장성을 넓히고 있어 상업적 측면에서 대사공학의 유망한 목표가 되고 있다. 최근의 대사공학 분야에서의 많은 성공에도 불구하고, flavonoid에 대한 고도의 대사공학 조절을 이용하여 원하는 flavonoid 화합물을 생성하거나, 원치 않는 flavonoid 화합물을 억제하도록 하는 데는 여전히 기술적 문제점들이 남아있다. 예를 들면 IFS와 FLS 등의 유전자 분리 그리고 조직 및 시기 특이적인 promoter 개발 등이 동시에 이루어져야 하며, co-pigmentation 및 액포 pH와 관련된 메카니즘에 대한 이해, 화훼작물들의 형질전환 기술 개발 등이 이루어져야 원하는 꽃의 착색 조절이 가능하게 될 것이다. 최근 나팔꽃에서 액포의 $Na^{+}$H$^{+}$ exchanger를 파괴하여 화색을 변경시킨 mutants 연구를 통하여 조만간 액포 pH의 조절을 이용한 식물 대사공학이 가능할 것으로 기대되고 있다 (Yamaguchi et al. 2001). 아직 자연계에서 기본적인 골격의 변경만으로 수천 종류의 flavonoid가 생성 가능한가는 여전히 의문점으로 남아 있으나, 분명한 것은 다양한 식물 체계에서의 노력으로 농업, 원예, 그리고 영양분 증대를 위한 flavonoid 대사를 어떻게 조절할 것인가에 대한 정보를 얻을 수 있고, 또한 flavonoid 생합성 연구로부터 얻어진 정보들을 통하여 세포질 대사와 기본적인 생물학적 현상에 대한 이해를 넓힐 수 있게 될 것이다. Flavonoid biosynthesis is one of the most extensively studied areas in the secondary metabolism. Due to the study of flavonoid metabolism in diverse plant system, the pathways become the best characterized secondary metabolites and can be excellent targets for metabolic engineering. These flavonoid-derived secondary metabolites have been considerably divergent functional roles: floral pigment, anticancer, antiviral, antitoxin, and hepatoprotective. Three species have been significant for elucidating the flavonoid metabolism and isolating the genes controlling the flavonoid genes: maize (Zea mays), snapdragon (Antirrhinum majus) and petunia (Prtunia hybrida). Recently, many genes involved in biosynthesis of flavonoid have been isolated and characterized using mutation and recombinant DNA technologies including transposon tagging and T-DNA tagging which are novel approaches for the discovery of uncharacterized genes. Metabolic engineering of flavonoid biosynthesis was approached by sense or antisense manipulation of the genes related with flavonoid pathway, or by modified expression of regulatory genes. So, the use of a variety of experimental tools and metabolic engineering facilitated the characterization of the flavonoid metabolism. Here we review recent progresses in flavonoid metabolism: confirmation of genes, metabolic engineering, and applications in the industrial use.