• 연구논문집
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• s.28
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• pp.21-37
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• 1998

Atmospheric pressure in a tunnel rises in proportion to the square of train’s speed as it enters a tunnel. This pressure difference propagates into the train and cause aural discomfort to the passengers. In order to alleviate the aural discomfort of them. a new ventilation system has been designed and tested. This system controls the charged and discharged by flow rate by detecting the air pressure generated outside and inside of the train. Test to confirm the fundamental performance of the system was carried out. Consequently, this system was found to be able to alleviate the aural discomfort effectively. Application of the system to TGV-K running in the speed range of 350km/h is considered to have good propospect.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10d
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• pp.41-45
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• 2007

기존의 생체인식 기술들은 노화에 따른 신체부위의 변형으로 인해 인식률 저하를 초래할 수 있으며 인식단계 시 눈과 같은 신체의 민감한 부분을 빛에 노출시키는 등의 불쾌감을 이용자에게 초래할 수 있다. 본 논문에서는 기존 생체인식 시스템이 갖는 이러한 문제들을 보완하기 위해 손가락 정맥영상을 이용한 생체인식 시스템을 제안한다. 손가락 정맥의 경우 인식 절차가 단순하면서도 개인마다 고유한 특징을 충분히 포함하고 있다. 또한 인체 내부에 존재하는 특징으로 인해 외상이나 노화로 인한 변형의 가능성이 적으며 촬영 시 이용자의 거부감이나 불쾌감을 최소화 할 수 있다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.264-267
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• 2008

Relationship between exposure to combined noise sources and community annoyance have been investigated. Social surveys were conducted in urban spaces near the construction site with road traffics. The question relating to noise annoyance was answered on an 11-point numerical scale and 5-point verbal scale according to ISO 15666. The questionnaire also contained demographic factors, interference with daily activities, health-related symptoms, and noise sensitivity. Noise levels were measured in terms of A-weighted equivalent level ($L_{Aeq}$), and noise mapping technique was applied to predict the noise levels of urban spaces. Synthesis curves for the relationship between noise levels and percentage highly annoyed for combined noise sources were derived, and compared to the curves from a single noise source.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.05a
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• pp.109-114
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• 2004

Measurement of noise is not only to know the information of acoustic pressure but to assess human response for noise. Provided that want to find human response for transportation noise, we will have to reproduce the measured noise. The method of reproduction is largely divided into monaural and binaural reproduction techniques. Human fundamentally hears sound through both ears, which is binaural hearing. And binaural technique includes the more information of physical phenomena like acoustical reflection and deflection. So, binaural reproduction is more suitable for assessment of the psychoacoustical and physiological response for transportation noise exposures.

• 한국신재생에너지학회:학술대회논문집
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• 2009.11a
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• pp.491-491
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• 2009

Wind turbines produce aerodynamic noise which fluctuate periodically at a blade passing frequency. This sound characteristic is called amplitude modulation, or swishing sound. Several previous studies claimed that this amplitude modulation has a possibility to increase noise annoyance. Thus, this study performed a listening test to find the relationship between the amplitude modulation in wind turbine noise on noise annoyance. The stimuli for the listening test was recorded from a 1.5MW wind turbine in Jeju island. The result of the listening test shows that the amplitude modulation in wind turbine noise significantly increase noise annoyance. Moreover, this study analytically examined the effect of amplitude modulation on noise perception. The result indicates that amplitude modulated sound can be easily perceived even though the background noise level is higher than the sound level of the signal.

• Applied Biological Chemistry
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• v.30 no.3
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• pp.272-277
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• 1987

The odor threshold and agreeability of aroma components in Korean Yakju were measured in Null-Yakju, 19% ethyl alcohol solution, $20^{\circ}C$ distilled water and $50^{\circ}C$ distilled water by 20 panels. The measurement of the odor threshold in Null-Yakju was as follows: Formal-dehyde 5ppm, acetaldehyde 20ppm, ethylacetate 30ppm, ethyl alcohol 5g/l, acetone 7ppm, diacetyl 0.2ppm, n-propanol 20ppm, iso-butanol 80ppm, iso-amyl alcohol 10ppm and dimethyl sulfide 2ppm were found. The most agreeability of amyl alcohol, ethyl alcohol and acetaldehyde were $80{\sim}350ppm$, $2.6{\times}10^4{\sim}1{\times}10^5ppm$ and $75{\sim}160ppm$.

• Science of Emotion and Sensibility
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• v.19 no.4
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• pp.127-136
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• 2016

The main purpose of this study was to observe the relationship of denture and halitosis and to investigate the influence with oral health indexes. Also we examined the contribution factors to subjective awareness of halitosis by denture condition. A total sample of 103 elderly people were answered questionnaire and all collected survey data were processed for data analyses. Based on general characteristics, the study of the halitosis showed higher score which is older age, oral health attitude, and living together. The result showed that the use of denture, dental intelligent quotient (dental IQ) and type of denture were significantly correlated with halitosis. These results indicated that halitosis was affected by denture and oral health index. According to these findings, it is necessary to develop and apply the oral health promotion program which is include the management of halitosis especially for elderly person.

• Science of Emotion and Sensibility
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• v.24 no.4
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• pp.3-16
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• 2021

The attribution of human traits, emotions, and intentions to nonhuman entities such as robots is known as anthropomorphism. Two studies were conducted to check whether human-robot interaction is affected by anthropomorphic framing of robots. In Study 1, participants were presented with pictures of robots that varied in human similarity in appearance. According to the results, uncanny feelings toward a robot increased with the higher levels of human similarity. Furthermore, as the level of mind attribution increased, participants tended to attribute more humanlike abilities to nonhuman agents. In Study 2, a robot was described as either a machine-like robot or a humanlike robot in a priming story; then, it was examined whether significant differences exist in mind attribution and moral care. The participants tended to perceive robots as more humanlike in the mind attribution when anthropomorphism was used in a robot's behavior, according to the findings. Furthermore, in the condition of increased anthropomorphism, a higher level of moral care could be observed compared with that in the other condition. This means that humanlike appearances may increase uncanny feelings, whereas anthropomorphic attribution may facilitate social interactions between humans and robots. Limitations as well as the implications for future research are discussed.

• Journal of the Korea Knowledge Information Technology Society
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• v.13 no.3
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• pp.327-339
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• 2018

This study is on the elderly people's use and experience of pet robots (companion robots). Applying companion robots for the elderly's daily lives can enhance their quality of life. Leisure is main activity of the elderly who are out of work. Therefore, the quality and diversity of leisure can affect the quality of their life. Companion Robots could provide them with more advanced and interesting experiences. Around the world, population aging becomes one of the most important trends in each country. The social and economic burden of aging is serious challenge on sustainability of the world, including S. Korea. The authors examine use of Companion Robots for elderly (from 50 years old to 90 years old). In this experiment, the authors study and measure many factors including system quality, interface quality, displeasure, enjoyment, willingness to reuse, perception on new technology. In regression analysis, intimacy(t=-2.006, p<.05) is significant factor on displeasure of Companion Robot. In another regression, displeasure of Companion Robot (independent variable) is significant factor on enjoyment(t=-3.327, p<.01) and willingness to reuse(t=-2.636, p<.01). Therefore, when elderly one feels less displeasure of Companion Robot, he/she feels more enjoyment and willingness to reuse. As a result, the elderly who don't familiar to new technology could improve quality of life and leisure activity by using companion robot.

• 건강소식
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• v.37 no.10
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• pp.30-31
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• 2013

마주한 상대와 재미있게 대화를 이어가다가도 은근 눈치를 보며 입을 가리게 하는 증상 입 냄새. 그렇다면 입 냄새는 왜 나는 것일까? 본인뿐만 아니라 대화 상대에게 불쾌감을 줄 수 있고, 심한 경우 입 냄새가 날지도 모른다는 생각에 사람들을 기피하게 하는 입 냄새의 원인과 해결 방법을 알아보자.