• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1998.04a
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• pp.57-62
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• 1998

The objectice of this study is to dvaluate the physical condition response of a drever by the change of CO$^{2}$ concentration in the automobile with EEG spectrum analysis. The experiment was performed in a semi-shielded simulated automobile with 10 healthy adults. The results showed that as CO$_{2}$ concentration increased from 500ppm to 6,000ppm, the $\alpha$' value significantly decreased(p*<0.05) while $\beta$' increased (p*<0.05). In a real parked automobile with 2 adult passengers, the CO$_{2}$ gas concintration reached at 6,000ppm in 15 minutes. These spectral data are in well agreement with the subject's verval statement of experiencing uncomfortableness when CO$_{2}$gas was increased ti over 5,000ppm. These results indecated that the EEG spectrum analysis can be appropriately used to assess physical condition of a driver in the changing automobile environment.

• Journal of Bio-Environment Control
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• v.7 no.3
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• pp.214-218
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• 1998

This study was performed to stabilize the physical properties of Sodium Carbonate Decahydrate that was selected as a highly concentrative thermal energy storage medium. The addition of ARS(additives to prevent supercooling) showed to prevent the supercooling of Na$_{2}$CO$_{3}$.10H$_{2}$O, and the supercooling was decreased below $1.5^{\circ}C$ with ARS of 3 wt% and the addition of PSC(phase separation controller) of 1.5 wt% controlled the phase separation of Na$_{2}$CO$_{3}$ .10H$_{2}$O with the phase change cycles increased from 0 to 1,500, the phase change temperature and the latent heat has changed in the range of 30$\pm$1.$0^{\circ}C$ and 54$\pm$2.0Kcal.kg$^{-1}$ respectively.

• Physical Therapy Korea
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• v.7 no.4
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• pp.65-71
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• 2000

Recently, we can see worldwide the rapid increase in the population of the aged people, while that of young people is decreasing. Especially present Japan has a super-aged society, and it is a big social problem how to take effective measures to that in the future, Some items as well as researches have come out of various research them to the user. Such a change in population will be seen also in South Korea. Because South Korea has many social things in common with Japan, though they have different languages. Through this report, it is expected that it will be a good example for Japan PT to expand its activities and will connect to the future joint research of South Korea and Japan, by introducing it to South Korea.

• Korean Institute of Interior Design Journal
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• v.14 no.2 s.49
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• pp.104-111
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• 2005

Environment problem has proposed in the world at large, the desire for environment conservation and one's value change which lay emphasis on lasting human sensibility are increasing. Constant human mind and ecology centered in space is presenting as future space design substitute plan which is based on fundamental material quality in the space such as environment and human ,naturalist or Green Design, pro-environment construction, sense design and etc. So, we intend to anthropocentric value and get out of satisfaction of function as the past physical environment equipment which is applied the elements of ecology based on the organized body and interaction with human. A form of sensitive space is divided into sentient space, expressing method and material, change of space according to the flow of time, and is expressed in a more segmented form of sensuality by being replaced into a new sensitive space through transaction with human, who occupy within the space. The space embodiment which is satisfied human sense regards as alternative plan intention for the future, through two subjects relativity between the elements of ecology and sense, we will find the influence of sense as each space trait of the elements of ecology, examine sense form in the space with the synthetic summary. It is significant presentation for the lasting space based on anthropocentric delightfulness as the design which moves human mind while designing the space for this pattern of sense space.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.36 no.4
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• pp.163-172
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• 2020

In this study, the effect of window opening, which is a control mechanism for air control in winter high school classrooms, on the change in air and indoor environment of the classroom was analyzed and physical conditions of indoor and air environment were observed during the classroom course, and satisfaction of the students and teachers was assessed with questionnaires. And the changes in air environment were assessed by the performance of the duster cleaning work in the classroom. It was found that 84.6% of the students surveyed said the air was stuffy. And among the alternatives, opening windows all times during class was most effective in reducing CO₂ concentration and PM concentration was measured within classroom's standard. In addition, the concentration change rate of duster cleaning work was reduced by 74.4% and 65.4% of PM10 compared to broom cleaning work.

• Journal of the Korean Society for Marine Environment & Energy
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• v.19 no.4
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• pp.247-258
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• 2016

Physical and acoustic properties of sediment on the southwestern Taean Penisula, the Yellow Sea, were studied using eight piston cores. The sediments in the study area are largely composed of sand which has been deposited with sea-level change after LGM(Last Glacial Maximum). After the sea-level rise, fine-grained sediments discharged from Keum River and neighboring coast area were deposited as muddy sand or sandy mud. Results of these sedimentary environment in this area, the texture of sediments are different from place to place with variable horizontal and vertical distribution of physical and acoustic properties. Correlations among the physical, geoacoustic properties, and mean grain size show slight deviations from those of the South Sea in spite of similar pattern. This is probably due to the differences in sedimentary environment, mineral composition, and measurement system.

• Journal of Computational Design and Engineering
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• v.3 no.4
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• pp.363-369
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• 2016

Cyber Physical System (CPS) and Internet of Things (IoT) are hot objects of interest as an extension of the embedded system. These interactive products and systems contain Mobile Devices which are most popular and used most frequently. Also these have been widely used from the control of the Nuclear Power Control System (NPCS) to IoT Home Service. Information & Communication Technology (ICT) topics of trend fused-complex current Information Technology (IT) and Communication Technology (CT) are closely linked to real space and virtual space. This immediately means the arrival of the ultra-connected society. It refers to a society in which various objects surrounding the human innovation and change in the social sector are expected through the connection between the data which are to be generated. In addition, studies of Tool-kit for the design of such systems are also actively pursued. However, only increased cooperation and information sharing between the physical object consists of a variety of machinery and equipment. We have taken into consideration a number of design variables of the high barriers to entry about the product. In this study, It has been developed a Web-based collaboration framework which can be a flexible connection between macroscopically virtual environment and the physical environment. This framework is able to verifiy and manage physical environments. Also it can resolve the bottlenecks encountered during the base expansion and development process of IoT (Internet of Things) environment.

• Geomechanics and Engineering
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• v.11 no.3
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• pp.373-383
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• 2016

As one natural material, the physical and mechanical properties of rock will be affected very largely by chemical erosion environment. Under chemical environment, the strength of rock will be reduced. Considering the effect of the chemical erosion, fracture factor of rock is reduced. The damage variable is applied to express the change of fracture stress. Therefore, the fracture criterion of rock under chemical environment is constructed. By one experiment of rock fracture under chemical erosion environment, the proposed fracture criterion is verified. The results show that, the fracture path by theory is agree with the testing one well.

• Journal of Environmental Science International
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• v.13 no.10
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• pp.863-870
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• 2004

The main objectives of this research are to analyse and evaluate the demolishing walls initiative in Daegu city as the collaborative urban environment improvement initiative in South Korea using the actor network theory concept. Local authorities are unable to effectively and efficiently improve urban environment because of their limited statutory and financial powers. This inability crucially led to the formation of the demolishing walls initiative in Daegu city with building a coalition of the local people, interest groups and public and non-governmental organisations in the operational processes in order to improve the physical and social urban environments. Furthermore, co-ordination between local authorities and landscape architecture specialists not only to change the way in which they tackle urban environmental problems but also to make the local people aware of their potential ability in positively improving the urban environment.

• Journal of Preventive Medicine and Public Health
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• v.56 no.5
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• pp.481-484
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• 2023

Epidemiological models, also known as host-agent-vector-environment models, are utilized in public health to gain insights into disease occurrence and to formulate intervention strategies. In this paper, we propose an epidemiological model that incorporates both conventional measures and tobacco endgame policies. Our model suggests that conventional measures focus on relationships among agent-vector-host-environment components, whereas endgame policies inherently aim to change or eliminate those components at a fundamental level. We also found that the vector (tobacco industry) and environment (physical and social surroundings) components were insufficiently researched or controlled by both conventional measures and tobacco endgame policies. The use of an epidemiological model for tobacco control and the tobacco endgame is recommended to identify areas that require greater effort and to develop effective intervention measures.