• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2003.11a
• /
• pp.47-51
• /
• 2003

In this paper, we compared the thermal environment in the livingroom with panel heating system of Korea and Japan. The houses are two apartments and two single houses in Korea, and two apartments in Japan. The outdoor temperatures, indoor air temperatures, surface temperatures on floor and humidities were measured. The survey to the residents and recording of operation were also collected. The results were as follows.1. The Korean houses are warmer and drier(approximately 23$^{\circ}$C, 38%) than those of Japan.(approximately 20$^{\circ}$C, 57%). And indoor temperaures of Korean apartment are stabie. 2.The residents in Japan put on and off the switches of the heating system frequently.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2004.11a
• /
• pp.323-328
• /
• 2004

This study measured the thermal environment and residents' cooling behavior of the apartments' living rooms in summer in Seoul. The purpose of this study is to find out the present thermal environment of the living rooms and to find out the target figure of passive cooling system. The surveys and measurements took place in six apartments of Seoul for 60days(2004. 7. 3${\sim}$2004. 8. 31). The result were summarized as follows; The thermal environment of apartments' living rooms were almost neutral, and residents felt a little uncomfortable. Residents turned on the air conditioner at $27.31^{\circ}C$ of indoor temperature, and $28.89^{\circ}C$ of SET*. Therefore, cooling critical temperature of the passive cooling system can be figured out from this result.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2005.11a
• /
• pp.63-66
• /
• 2005

The purpose of this study is to suggest the modeling of ubiquitous environments according to the analysis of user's behaviors focused on the living area within the house. Recently, with appearing 'Ubiquitous environments', the applications of ubiquitous technologies on the our environment adopt a new paradigm. This new paradigm leads to the possibility of creating more intellectual dwelling environment according to user's behaviors. This paper suggests to change our dwelling by considering both engineering technology and the character of dwelling, because the house should provide causes humans with comfortability. Therefore, we need to understand user's behaviors in the dwelling, towards user friendly environment. Also, it very important for us to configure proper sensors and technologies by the priority based on user's behaviors. To sum up, this study is aimed to analyze user's behaviors and then, to suggest the guideline for users offering optimal ubiquitous environments.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.9
• /
• pp.1847-1853
• /
• 2011

Analysis of an indoor propagation channel has conventionally used the ray-tracing method. But, in this paper, we had modelling the channel for three dimensional indoor structure by the finite difference time domain method for three dimensional full wave analysis. An excitation signal of the FDTD method used plane wave. The plane wave was excited using the total field/scattered field method. And absorbing boundary condition used the perfectly matched layer method with 7 layers. An living room for the simulation of indoor channel modeling is surrounded the wall that be composed of the wood, the conductor, the glass and concrete. When there are furniture in the living room or not, it were simulated, respectively. As simulation results, we could identify the fading effect of multipath at indoor propagation environment, calculated mean excess delay and rms delay spread for the receiver design.

• 한국방재학회:학술대회논문집
• /
• 2011.02a
• /
• pp.189-189
• /
• 2011

최근 공동주택은 보편적인 도시주거 유형으로 자리매김 하고 있지만, 성장 위주의 경제 산업 정책에 따른 안전의식미약, 사회구조개편에 따른 급격한 증가, 생활환경 변화와 에너지 사용 증가 등 화재 유발인자의 다양화로 인해 인적 물적 피해가 증가하고 있는 실정이다. 특히 다른 건물들과는 달리 공동주택의 거주자가 유아, 노인, 신체장애자 등 다양한 인적 구성의 형태로 이루어져 있어서 화재 발생 건수에 비해 인명피해가 월등히 높은 편이다. 공동주택에서의 화재에 대한 위험성을 인식하고, 그에 대한 인적 물적 피해를 최소화하기 위한 대책 마련이 시급하다. 본 논문은 CFAST(Consolidated Model of Fire Growth and Smoke Transport)를 사용하여 공동주택을 대상으로 실물 화재 실험을 실시하고 공간화재에서의 화재 성상을 파악하여 화재 시 개구부의 개폐 여부에 따라 발생되는 산소와 이산화탄소의 농도와 온도가 인체에 미치는 영향에 대해 알아본다. 개구부를 개방 했을 경우에 외부창문의 개폐 여부에 상관없이 모든 방의 온도 분포가 뚜렷하게 나타났지만 개구부를 폐쇄 할 경우에는 발화지점인 거실의 온도 분포만 나타났다. Flashover현상과 Back Draft현상은 개구부의 개폐여부에 상관없이 외부 창문을 폐쇄 했을 경우에 나타났지만 특히 모든 개구부와 외부창문을 폐쇄 했을 경우에 더욱 뚜렷하게 나타났다. 각 실은 점화 후 4분경에 최고 온도를 보였으며 다른 방에 비해 발화지점인 거실의 온도가 가장 높게 나타났다. 온도에 의해서는 두 가지 영향이 일어날 수 있는데, 하나는 비교적 장시간에 걸쳐 발생하는 열응력이고, 다른 하나는 짧은 시간에 발생할 수 있는 화상이다. 만약 피부온도가 $45^{\circ}C$에 이르면 인체는 고통을 느끼게 되며, 이보다 더 높은 온도에서는 깊은 피부조직까지 손상을 줄 수 있다. 움직이지 않는 사람에 대한 고통 유발 임계온도는 약 $200^{\circ}C$이며, 인체는 땀의 발산으로 온도에 대한 내성이 증가하지만 이체가 장시간 열을 받으면 사망에 이를 수 있다. 결론적으로 공동 주택을 대상으로 CFAST를 이용해 분석한 결과 플래쉬오버 현상으로 인해 화재가 성장하여 급격히 온도가 상승하다가, 산소 부족으로 인해 화재가 성장하지 않고 온도가 떨어지는 것을 알 수 있다. 화재 시 온도, 산소, 이산화탄소를 고려하였을 때 약 3분 이내에 대피해야 온도 및 가스로 인한 피해를 줄일 수 있을 것으로 판단된다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.4
• /
• pp.199-208
• /
• 2016

This paper proposes renovation guidelines for impaired persons' facilities in Chungcheongnam-Do by reviewing the conditions of the facilities based on the standard and deinstitutionalization trends in foreign facilities. The facilities were located far from the downtown of cities. Therefore, education and adaptation programs are necessary for these people to return to society. Recombining the rooms for a living room-oriented unit considering the structure system of the facilities allows good adaptation to home-based living conditions for impaired people. The area per person will be increases by renovations to a living room-oriented unit that makes upgrades to near foreign standards, such as The USA and The UK.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.18 no.3
• /
• pp.569-575
• /
• 2014

These days as smart TVs or android set top boxes have come into wide use, VoIP(Voice over Internet Protocol) services such as the Skype which can beused on computer system, can be also accessed by smart TVs or set top boxes. and the various kinds of distance learning programs have been developed on smart TVs or set top boxes. but when users have utilized a webcam with smart TVs or set top boxes, users have to go in front of smart TVs or set top boxes In this research paper, the new technology can be solved the problem of webcam use according to chaned environment. This tech is related with the wireless webcam one which can be applicable to open spaces such as living room with some distance between user and smart TV. There are few problems in long distance the test results show high reliability in living room with some distance.

• The Journal of the Acoustical Society of Korea
• /
• v.9 no.4
• /
• pp.33-44
• /
• 1990

In this paper, it represents the design requirements to make apartment houses comfortable in acoustic environments and to keep a privacy between dwellers. The sound insulation performance between rooms were tested in the fields and the conditions to satisfy the design requirements were investigated. For that purpose, the sound insulation performance between living room and bed room were investigated and noise transmittance according to the difference of arrangement in rooms were tested. Several flush doors and light-weighted walls which have difference with each material and structure were tested to suggest the methods that improve the acoustic environments.

• Korea Science and Art Forum
• /
• v.37 no.1
• /
• pp.249-260
• /
• 2019

Recently, the proportion of single-person households is on the increase in Korea, expected to reach 34.6% in 2035. Among the single-person households, Young single family households are facing greater difficulties due to high house prices in Korea. The government is expanding its support to Young single family, executing various policies such as public lease housings, private lease housings for youth, youth dormitory, etc. The purpose of this study is to understand the exact housing requirement of Young single family households who have different lifestyles with other age groups and provide base line data for youth house planning which will be in use later on. Study methods are shown below. First, this research studied the status and characteristics of Young single family households by looking into literature. Second, by studying previous studies concerned with life style and housing preferences of youth, the tool for investigating preferences and needs of housing environment by Young single family households was composed. Third, survey on characterstics of space usage, preferences and needs on flat composition, and preferences of interior design were conducted based on lifestyle of Young single family-households. The survey was conducted as an online survey using SNS for 150 Young single family holds from the age of 20 and 39, including students and office workers from December 2018 to January 2019. The results are as following. (1) Looking into the space usage characteristics, considering that various activities other than basic functions take place in bedroom and living room of small-sized Young single family households, we need to consider this additionally when planning the housing. (2) Looking into the preferences and composite needs of flat composition, the subjects demand separate bed room and more living room space, and also demand expansion of living room space where various activities take place and additional storage such as dress room in bed room (3) The preferences toward interior design show preferences toward modern style and achromatic color, a representative color. The subjects also prefer floor finishing materials normally used for living spaces, and indirect, soft lighting that uses wall. Also, there are differences between interior design preferences between students (20's) and office workers(30's) due to their different lifestyles. Research is needed to propose practical residential environment requirements and plans through a case study of actual public rental housing and a wider range of users.

• Journal of the Korean Home Economics Association
• /
• v.35 no.4
• /
• pp.149-158
• /
• 1997

The purpose of this study is to investigate the actual conditions of illumination circumstances in living rooms and the evaluation of residents about those. The respondents of this study were residents of 236 detached houses and 163 apartment houses in Taegu city, The results are as follows: (1) Fluorescent lamps are usded in living rooms by half and plural lighting fixtures are generally used; ceiling light and chandelier. While direct light system is generally used and core type is the most frequent in living rooms. (2) The average used illumination level is 59.7 1x while the possession illumination level is 84.9 1x by investigating of illumination circumstances. (3) Over half of residents are satisfied with illumination circumstances in their own houses. While they wish to improve the lighting fixtures lightness and the kind of light soure in order. And the evaluation of residents are medial level.