동잡음 저감을 위한 심전도 전극 특성에 대한 연구

강영환,박재순,조범기,최상동,정연호,Kang, Young-Hwan,Park, Jae-Soon,Cho, Bum-Ki,Choi, Sang-Dong,Joung, Yeun-Ho 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.6

In this paper, we introduce an electrocardiogram (ECG) system designed to solve problems caused by wetgels and motion artifacts in measuring active movement. The system is called a dry-contact ECG and was designed by considering impedance matching between skin and electrode as well as the frictional electricity between electrode and clothes. In order to create the system, we measured impedance on the skin-electrode interface, and the result was applied to the electronic circuit scheme. Moreover, we added an electrode on the back of the measurement electrode to make a flow path to ground the electrical noise. The final ECG circuit and novel electrode were used to detect real human cardiac signals from a subject who was tested while standing still and walking. The signals obtained from the two activities were nicely shaped, without any motion artifact noise. We took electrode size into account in this study because the impedance depended on the area of the electrode. An electrode of 50 mm diameter showed the best curve for the ECG signal without any electrical noise.

중국(中國) 연변지구(延邊地區) 조선족(朝鮮族)의 주거공간(住居空間) 및 생활방식(生活方式) 용정시(龍井市) 지신향(智新鄕) 장재촌(長財村)을 대상으로

강영환,Kang, Young Hwan 한국건축역사학회 1994 건축역사연구 Vol.3 No.1

This paper is a part of "A Case Study on The Dwellings and Settlement of Korean Immigrants to North-Eastern Province of China". Among various subjects from the study, this paper covers with the spaces and life style in the dwellings of Korean Immigrants. The purpose of this paper is to discribe how their dwelling culture has been moved and changed to a new environment. One rural village of Korean Immigrants named "Ch'ang-ts'ai" in Yen-pien Province was selected where we investigated more than 110 households. From the formal interview, I collect the data on the family structure, family economic state, dwelling spaces and its use, and dwelling facillities and furniture. From informal interview with key informants, I analyze how they have changed their dwelling spaces and life style since they moved here. Based on the analysis of the data, I conclude that major features of their dwelling and life style has been moved from Korean penninsula, specially from 'Hamkyong' Province where their ancestor has lived. This features are summarized as follows: a. Dwelling spaces and its functions are simillar to typical dwelling type of Hamkyong Province. b. They use "Chong-ji" for both a cooking space and a major living space. c. They have a life style of sitting on the floor. d. Bedrooms are differentiated with male and female. e. Most of their dwelling facillities and furniture arc different from those of Chinese in the same province. Since they immigrated, there has been some social changes which could influence on making their dwelling culture. But they have preserved their cultural identity on their dwellings and life style. So I suggest that the dwelling culture of a society would be seldom changed by immigration, as long as they will be given similar conditions such as the independent ethnic community, the same ecosystem, and economical autonomy.

이러닝 기업 CEO의 윤리적 리더십, 과업지향 조직문화, 학습조직 수준, 조직유효성 간의 구조적 관계

강영환 ( Young Hwan Kang ),최은수 ( Eun Soo Choi ) 한국인력개발학회 2014 HRD연구 Vol.16 No.4

본 연구는 정보통신기술의 발달과 함께 기업교육 및 학교교육 분야에서 영향력을 확대해 가고 있는 이러닝 기업 CEO의 윤리적 리더십과 과업지향 조직문화 그리고 학습조직 수준이 조직유효성에 어떤 영향을 미치며 또한 이 변인들 간에 어떤 구조적 관계가 있는 지를 규명하는 것을 목적으로 한다. 이를 위해 서울과 경기도에 소재하고 있는 이러닝 기업의 종사자 559명을 대상으로 설문조사를 수행하고, 연구모델을 설정한 후 구조방정식 모델링 기법을 이용해 측정모델과 연구모델을 분석하였다. 연구결과 첫째, 이러닝 기업 CEO의 윤리적 리더십이 과업지향 조직문화에 직접효과가 있는 것으로 나타났다. 둘째, 이러닝 기업 CEO의 윤리적 리더십은 학습조직 수준에 직접효과가 높게 나타났으며, 과업지향 조직문화를 매개로 한 간접효과도 나타났다. 셋째, 과업지향 조직문화가 학습조직 수준에 직접효과를 주는 것으로 나타났다. 넷째, 이러닝 기업 CEO의 윤리적 리더십은 조직유효성에 직접효과는 없고 학습조직 수준을 매개로한 간접효과만 있는 것으로 나타났다. 다섯째, 학습조직 수준은 조직유효성에 미치는 직접효과가 매우 높은 것으로 나타났다. 여섯째, 과업지향 조직문화는 조직유효성에 직접효과는 없고 학습조직 수준을 매개로한 간접효과만 있는 것으로 나타났다. 본 연구의 끝부분에는 연구 결과에 대한 논의와 함께 후속 연구를 위한 제언을 기술하였다. The purpose of this study was to analyze the structural relationships among such variables as the e-Learning company CEO`s ethical leadership, task-oriented organizational culture, learning organization level and organizational effectiveness. In order to verify the hypothesized research model, the primary analytical tool of this research was structural equation modeling. The sample (N=559) was made of survey questionnaires distributed among 30 e-learning companies located in Seoul and GyeongGi province. The major findings of this study from EFA and SEM were as follows: First, the CEO`s ethical leadership was found to have a direct effect on task-oriented organizational culture in e-Learning company. Second, the CEO`s ethical leadership had a direct effect on learning organization level in e-Learning company and had an indirect effect through the mediating effect of task-oriented organizational culture. Third, the task-oriented organizational culture was found to have a direct effect on learning organization level in e-Learning company. Although CEO`s ethical leadership did not affect the organizational effectiveness directly, it affected the organizational effectiveness indirectly through the mediating effect of learning organization level. Fifth, the level of learning organization was found to be a significant predictor for organizational effectiveness in e-Learning company. Sixth, task-oriented organizational culture did not have a direct effect on organizational effectiveness, yet had an indirect effect through the mediating effect of learning organization level. Therefore, paying more attention to and investing resources to the establishment and consolidation of learning organization have to be preceded in order to uplift the organizational effectiveness before the effort of building the sound task-oriented organizational culture is made. Finally, Implications and suggestions based upon the findings of this study were presented.

한국 전통건축의 보첨과 차양에 관한 연구

강영환(Kang Young-Hwan) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.12

This paper aims to investigate the general characteristics of the eave and awning of the traditional architecture in Korea, which seems to have been singularly neglected, for understandable reasons, in the architectural researches. For one thing, the eave and awning has not even listed among the nomenclature of the more authentic elements of the traditional architecture. Author examined a non-architectural source, the old literatures and paintings of the Koryo and Chosun era, and sought to find out how the eave and awning was represented. They provided vivid evidences of the long forgotten eave and awning. It show that the deeply extruded eave was regarded as the symbol of high quality architecture, and that the bracket set and double eve was allowed exclusively for high classes. Under the architectural regulation, the ordinary people developed temporary installed awning in extending eave with pine tree or straw mat. The form and structure can be found in the genre paintings of Chosun dynasty. However this temporary type awning has disappeared since 19th century, probably owing to the weakness of structure, the development of Toi, the abrogation of the regulation, or the imported zinc roof. And it was replaced to the luxury type with tiled roof as shown in a few examples.

적응 출력 제어된 고정 무선 가입자 망에서의 연접 부호 설계

강영환(Young-Hwan Kang),이용환(Yong-Hwan Lee) 한국통신학회 1999 한국통신학회 학술대회 및 강연회 Vol.1999 No.4

VR기술을 활용한 암각화 박물관의 콘텐츠 개발 연구

강영환(Young-Hwan Kang) 한국콘텐츠학회 2016 한국콘텐츠학회논문지 Vol.16 No.10

암각화는 선사시대의 기록으로서 선사인들의 생활, 신앙, 예술, 신화 등 다양한 의미를 갖는 문화유산이다. 이에 전시, 교육, 오락, 상업 등 다양한 분야에서 암각화를 활용한 콘텐츠 연구와 개발이 시도되고 있다. 이 연구는 암각화 박물관에서 VR 기술을 활용하여 개발할 수 있는 전시 콘텐츠를 탐색하는데 목적을 둔 것이다. 먼저 현재 암각화 박물관의 전시콘텐츠 현황과 문제점을 파악하고, VR의 기법을 활용한 문화유산 콘텐츠의 사례들을 검토해 보았다. 5건의 사례를 통해 콘텐츠의 내용과 사용된 VR 기법을 검토한 결과 암각화의 다양한 콘텐츠에 활용될 수 있는 가능성을 발견하였다. 개발 가능한 콘텐츠를 요약하면 다음과 같다. 첫째 암각화의 입체적 디지털 자료화, 둘째 시각범주를 조작할 수 있는 암각화의 입체적 재현, 셋째 암각화의 촉지각, 압각 등 체험범주의 확장, 넷째 다양한 맥락에서 암각화 스토리텔링 입체영상 콘텐츠 개발, 마지막으로 암각화 가상박물관 구축 등이다. The Petroglyph is a drawing on the rock which reflects the art, religion, myth, and life style of prehistoric society. Recently lots of researches have been studied to develop the contents applying the petroglyphs in the fields of exhibition, education, entertainment, and commercial. This research aims to find some possible VR contents based on the petroglyphs text. The review on the Ulsan petroglyph museum which is the first and the only petroglyph museum in Korea was the first step. Some limitation and problems were found in the current contents which could be overcome by using VR technology. The next step was the overall review of VR system and devices, and then I analyzed five cases of VR contents which specifically applied to the cultural heritages. Based on the analysis of case studies I propose some possible VR contents more immersive and interactive covered with whole range of petroglyphs context, environmental, social, cultural, technical and artistic.

중국 동북지역 요ㆍ금시기 온돌형식에 관한 연구

강영환(Kang Young-Hwan),최운(Cui Yun) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.4

The Ondol has been considered as a unique artifact of traditional heating system in Korea. It was originated in northeastern area of China, however, very few of korean researches paid attention to the development of Ondol in this area, specially after Balhae period. Since 1980, Chinese archeologist have excavated some relics which are significant to review the development of Ondol. This study aims at finding the characteristics of Ondol during Liao-Jin period in northeastern area of China. Through the excavation reports, 20 relics of Ondol construct during Liao-Jin period were found. By analyzing these data, the result of this study is concluded as followings; The type of Ondol in Lio period was ㄱ shape with 2-3 tunnels which seems to be succeeded to the Balhae type. During Jin period a new type of ㄷ shape with 3-4 tunnels created by Nuzhen which is rarely discovered in korean peninsula. This type was the original type succeeded to the Ching period and nowaday in northeast area of China. That means different direction of Ondol development in Korean peninsula and in northeastern China.

일제시기 함경도 부농주거의 성격에 관한 연구

강영환(Kang, Young-Hwan) 대한건축학회 2014 대한건축학회논문집 Vol.30 No.2

Plenty of researchers have paid attention to the traditional dwelling of korea since 1970’s. Various approaches on the traditional way of dwelling design produced deep and broad understanding such as regional, periodical, social class characteristics etc. However these understandings have covered only on south korea. As far as north korea, very few studies have been added after korean war. Very fortunately, a recent research discovered some of dwelling drawings drawn by immigrants, which provided the new possibility on reviewing the characteristics of north korean dwelling. Based on these examples, this paper discusses the differences of dwelling design among social classes and design characteristics of high class dwellings mainly inhabited by rich peasant in Hamkyeong province.

일제시기 평안도 부농주거의 성격에 관한 연구

강영환(Kang, Young-Hwan) 대한건축학회 2015 대한건축학회논문집 Vol.31 No.4

Since 1970’s plenty of researches have developed wide and deep understandings on the traditional dwellings of korea. Concerning to the traditional dwelling in north korea, however, very few researchers have paid attention to it after korean war. The understanding on the dwelling types of this region have been depended mainly on the limited examples drawn during Japanese colonial period which had seldom covered with upper class. Recently a research discovered new examples of old dwelling drawn by immigrants, which could provide new possibility on reviewing the characteristics of north korean dwelling. It provided with even more important informations including the social class, management of farming etc. Based on these examples, this paper discusses the differences of dwelling design among social classes and design characteristics of high class dwellings mainly inhabited by rich peasant in Pyongan province. Through the analysis of 16 examples of rich peasant dwellings, three types of building layout have been discovered. It shows that the formation of each types should be related deeply to the farm size, management type, social status, and regional dwelling type.

한국건축 처마공간의 인식과 성격에 관한 문헌고찰

강영환(Kang Young-Hwan) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.8

This paper aims to investigate the general characteristics of the 'eave-space' of the traditional architecture of Korea, which seems to have been singularly neglected, for understandable reasons, in the architectural researches. For one thing, the eave-space has not even listed among the nomenclature of the more authentic spaces of the traditional architecture. Author examined a non-architectural source, the old literatures of the Koryo and Choson era scholars, and sought to find out how the eave-space was conceived in relation to the perception of the nature in general. They provided a fresh conception of the long forgotten eave-space. It was, or still is, a unique space which was endowed with active architectural functions, which is quite different from those of China and Japan. It provided architecture with a space for communication with the nature, a layer for control of the spatial hierarchy, and also a space for cohabitation with animals. This paper concludes that the eave-space is a unique space that characterizes the traditional architecture of Korea, no less than major spaces.