• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.1
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• pp.279-287
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• 2019

In this paper, we attempted to analyze the balance ability of the body by measuring changes in body motion and plantar pressure distribution. So we developed a program that can measure and analyze range of motion and center of body pressure using inertial measurement unit(IMU) and FSR(Force Sensing Resistor) sensor, we also produced a contents that can help improve the balance ability. The quantitative values of range of motion and center of body pressure measured by this program are visualized in real time so that the user can easily recognize the results. In addition, the contents were designed to be adjusted according to the direction of improving the balance ability by adjusting the difficulty level based on the measured balance information. This can be achieved by increasing the concentration and participation will by using visual feedback method that proceeds while watching moving objects according to the user's motion.

• Science of Emotion and Sensibility
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• v.1 no.2
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• pp.75-79
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• 1998

이 논문은 신체온도를 직접 측정하지 않고서 신체온도를 예상하는 모델을 연구한 것이다. 열감지지수 (TPI)를 개발하여 환경으로부터 느끼는 체감온도와 몸의 내부온도인 직장온도(Trec)와 몸의 외부온도인 피부온도 (Tsdin)를 예측하도록 하였다. Kwon과 Ramsey의 개발모델을 Goldman 의 모델과 비교해본 결과 정확도에 통계적으로 유의한 차이가 없었다. 회귀분석과 경험을 토대로 만든 체감온도를 예측할 수 있는 손쉬운 Kwon의 열감지지수 (KTPI)도 제시하였다. 대부분의 사람들이 쉽게 예측할 수 있도록 측정 또는 사용가능한 몇 개의 환경변수로부터 쉽게 몸의 예산 내부온도와 외부온도를 계산할 수 있게 단순화하였다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.5
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• pp.209-213
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• 2021

For the human body shape information, body measurement techniques using a tape measure or image analysis are used. However, there is a demand for a method with high measurement accuracy and reproducibility while being simple. In this paper, domestic and foreign patent research related to body size measurement technology was conducted to identify the development trend of the related technology. WISDOMAIN DB was used to search for patents published in Korea, the United States, Japan, and Europe, and valid patents were derived by defining the technical scope of major and medium classifications and sub-categories. For the derived patents, patent trends by year, major applicants by country, and the status of technological fields were analyzed. In the field of body size measurement technology, the proportion of patent applications filed in Korea is high, indicating that Korea is leading the patent application in this field. Although the number of patent applications in the field of sensor-type measurement technology was not large, it has an advantage in measurement simplicity, so the development of related technology is expected to contribute to the improvement of measurement accuracy related to body composition analysis.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.42 no.3 s.303
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• pp.41-46
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• 2005

In this paper, we proposed noninvasive and continous measurement of blood pressure using pulse transit time(PTT) and physical characteristic parameters and verified its clinical effectiveness. PTT can be obtained by electrocardiogram and phtoplethysmogram. There are many researches for estimating blood pressure using PTT which can be used for individual. However, it is not enough for extracting general regression equation which can estimate blood pressure for unspecified people. In this study, we suggested the regression equatin using PTT and physical characteristic parameters related to blood pressure and did measure blood pressure of many people. we compared the performance between two methods. As the results, we knew that the regressin model using PTT combined with physical characteristic parameters can estimate blood pressure more acurately and is closer to American National Standards Institute of the Association of the Advancement of Medical Instrument(ANSI/AAMI).

• The Journal of the Korea Contents Association
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• v.14 no.7
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• pp.346-355
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• 2014

This study was to investigate basic level of physical activity test that reflects activity of daily living(ADL) for institutionalized elderly women. The subjects were 105 elderly women over than 65 years living in long-term care facilities located in Daejeon and Chungnam. The measured eight items related to ADL were tested and the data was analyzed by descriptive statistics, one-way ANOVA, factors analysis and correlation. The results were statistically significant differences. Among eight test items, two factors(muscle strength and mobility) were extracted by principal component factor analysis(PCA). The two factors are appropriate domains for assessment of basic physical activity of institutionalized elderly women. By using Pearson's correlation, between two factors and age, the first principal component scores were significantly decreased with age increasing. Degradation of ADL must be prevented for institutionalized elderly women through maintain muscle strength and mobility.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.103-111
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• 2011

The research has increased the role of physical activity in promoting health and preventing chronic disease. Estimating algorithm of physical activity energy expenditure was implemented by using a tri-axial accelerometer motion detector of the SVM(Signal Vector Magnitude) of 3-axis(x, y, z). COUNT method has been proven through experiments of validity Freedson, Hendelman, Leenders, Yngve was implemented by applying the SVM method. A total of 10 participants(5 males and 5 females aged between 20 and 30 years). The activity protocol consisted of three types on treadmill; participants performed three treadmill activity at three speeds(3, 5, 8 km/h). These activities were repeated four weeks. Customized estimating algorithm for energy expenditure of physical activities were implemented with COUNT and SVM correlation between the data.

• Science of Emotion and Sensibility
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• v.5 no.4
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• pp.45-49
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• 2002

Recently, virtual environment systems are used in various application fields such as industry, medicine, and training and education. However, the negative effect, cybersickness including nausea, visual fatigue, and disorientation, could be happened while using VR systems. It prevents VR system from spreading much more. To control the cybersickness, first of all, the objective measurement method should be established. As one of alternative methods, the postural instability could be a measure of cybersickness. In this study, 45 participants' postural sway before and after experiencing a H driving simulator was measured by using a force platform. Especially, we examined if two factors, motion and feedback, could affect on the postural instability The results showed the postural instability slightly increased after experiencing the VR driving simulator. For the factors, the providing of motion synchronized to visual display showed statistical significant decrease in postural sway along lateral side. To check the effectiveness of postural instability as a cybersickness measure, further studies are needed.

• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.238-240
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• 2011

본 연구는 뉴로 하모니 M 뇌파기기를 사용하여 스트레스가 있다고 측정된 대학생 6명을 대상으로 주니퍼, 라벤더, 레몬의 에센셜오일을 이용한 족욕을 10분씩 주2회 총 8회 적용하였다. 스트레스 측정도구는 스트레스 15문항, 심리적 스트레스 15문항의 2개의 영역으로 실험 전, 후의 스트레스를 측정하였다. 그 결과 신체적, 심리적인 스트레스가 유의하게 감소하였다. 따라서 에센셜오일을 이용한 주기적인 족욕방법은 간편하고 쉽게 활용할 수 있는 스트레스 완화 중재법이라고 사료된다.

• Journal of the Korean Society of Clothing and Textiles
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• v.24 no.8
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• pp.1187-1196
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• 2000

본 연구는 노년층 남성과 여성의 의복행동에 대한 신체이미지와 자아존중의 관계를 알아보는 것으로 구체적인 목적은 첫째, 노년층 남성과 여성의 신체이미지와 의복행동과의 관계를 알아보고, 둘째, 자아존중과 의복행동과의 관계를 알아보며, 끝으로 의복행동에 대한 신체이미지와 자아존중과의 관계에 있어서 남녀간의 차이점과 유사점을 규명하는 것이다. 조사대상은 나이 55세 이상의 미국 남부와 거주하는 남성과 여성으로 302부의 설문지를 배부하여 108부를 자료분석에 이용하였다. 신체이미지는 신체 18부분에 대한 만족도로 측정하였고, 자아존중은 Rosenberg의 자아존중 척도를 사용하였으며, 의복행동은 의복태도, 유행의견선도력, 쇼핑에 대한 만족, 상점충성도, 의복비 지출을 포함하였다. 결과로 남녀 노년층에게 있어 신체만족도는 대부분의 의복행동과 상관 관계가 있었으며 유행선도력과 상표충성도에 대한 상관관계가 있어서만 남녀간 유의한 차이가 있었다. 또한 자아존중은 남녀 모두에게 있어 대부분의 의복행동과 상관관계가 있었으며 유행선도력과의 관계에서만 남녀간 유의한 차이가 있는 것으로 나타났다.

• The Journal of the Korea Contents Association
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• v.13 no.5
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• pp.451-458
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• 2013

In this paper, we have developed an intellectual sizing and fitting system for bike user. In order to prevent the disease, we should adjust the bike's frame and select several components in the body size. Then it propose an extractions algorithm of avatar imagination with the cromakey method and realize the sizing and fitting.