맥파전달속도(PWV)와 말초체열분포(DITI)와의 관계 연구

이윤재,조정훈,이창훈,이진무,장준복,이경섭,Lee, Yoon-Jae,Cho, Jung-Hoon,Lee, Chang-Hoon,Lee, Jin-Moo,Jang, Jun-Bock,Lee, Kyung-Sub 대한한방체열의학회 2008 대한한방체열의학회지 Vol.6 No.1

Objective: The purpose of this study is to identify relationship between the PWV and the temperature difference. Methods: When it comes to senile patients who suffer from cold limbs, there is need to see whether or not the patient's low temperature of the limbs is do to arteriosclerosis. The Pulse Wave Velocity(PWV) is a non-invasive method measuring the artery's rigidness. And the Digital Infrared Thermal Imaging(D.I.T.I) is a non-invasive method to see the body's thermal change. Research on the interrelationship of the artery's rigidness and body's thermal distribution was done by using these two tests. The subjects of this research were patients between the age 40~65 who have done both the D.I.T.I and PWV in March 2005~ September 2005. They had to have no history of diabetes, coronary illnesses or cerebrovascular diseases which are diseases that can effect the outcome of the PVW, nor history of spondylopathy or dermatosis which can effect the outcome of the D.I.T.I. Results: The results were as follows. 1. There was a significant interrelationship between the right wrist-ankle PWV and the temperature difference of the right wrist-palm. 2. There was a significant interrelationship between the left wrist-ankle PWV and the temperature difference of the left wrist-palm. 3. There was no significant interrelationship between the right wrist-ankle PWV and the temperature difference of the right thigh-dorsum of foot. 4. There was no significant interrelationship between the left wrist-ankle PWV and the temperature difference of the left thigh-dorsum of foot. 5. The right ABI showed no significant interrelationship between the temperature difference of the right wrist-palm and the right thigh-dorsum of foot. 6. The left ABI showed no significant interrelationship between the temperature difference of the left wrist-palm and the left thigh-dorsum of foot. Conclusion: The study shows that there was a significant interrelationship between wrist-ankle PWV and the temperature difference of wrist-palm.

뇌교경색으로 인한 현훈 및 복시증상에 조간익뇌탕(助肝益腦湯)을 투여한 치험 1례

이윤재,이정섭,문미현,조영기,이성균,정현애,윤종민,신선호,임은경,Lee, Yun-Jae,Lee, Jung-Sub,Moon, Mi-Hyun,Cho, Young-Kee,Lee, Seong-Kyun,Jeong, Hyun-Ae,Yun, Jong-Min,Shin, Sun-Ho,Rhim, Eun-Kyung 대한한방내과학회 2005 大韓韓方內科學會誌 Vol.26 No.4

Pontine infarction presents variable neurologic deficits because the pons is a very complicated organ with cranial nerve nuclei and several fiber tracts. A 65 year-old women with dizzness, ataxia and diplopia because of Pontine infarction was admitted at Wonkwang University Jeonju Oriental Medicine Hospital. She was treated with the herbal medicine Joganiknoe-tang(助肝益腦湯) and with acupunture. Improvement in these symptoms was observed, so the specifics of the process in which the patient was treated are here described. Results suggest that Joganiknoe-tang(助肝益腦湯) is an effective treatment for symptoms of pontine infarction.

광섬유와 필름격자를 이용한 가속도 센서

이윤재,조재흥,권일범,서대철,이남권,Lee, Youn-Jea,Jo, Jae-Heung,Kwon, Il-Bum,Seo, Dae-Cheol,Lee, Nam-Kwon 한국광학회 2008 한국광학회지 Vol.19 No.3

상용의 전자기 가속도 센서에 비해 신호의 안정성 면에서 우수하고 가격이 저렴하며 제작이 비교적 용이한 필름 격자를 이용한 광세기 방식의 새로운 가속도 센서를 제안하고 이를 제작하였다. 외부의 진동에 반응하는 외팔보(cantilever beam)에 서로 주기가 어긋난 2장의 진폭 변조용 필름 격자가 나란히 부착되어 이 필름격자를 지나가는 출력광이 외부진동에 따라 서로 다른 위상으로 변조된다. 이 두 필름격자에 의한 출력의 위상각을 이용하여 출력광 신호의 위상을 구하고, 위상 연속화 과정을 거쳐 외팔보의 변위를 계산하여 가속도 환산 관계식을 통해 가속도를 측정하였다. 본 논문의 필름 격자를 이용한 광섬유 가속도 센서는 대형 구조물 및 토목 구조물의 모니터링에 알맞은 7 Hz 이하의 저주파 대역에서 사용 가능하도록 설계하였다. 이 광섬유 가속도 센서는 광섬유를 이용하였으므로 전자기적 노이즈가 예상되는 곳에서도 구조물의 진동 측정에 적합하다. We develop a fiber optic acceleration sensor with LED, PD, POF, and a cantilever beam, having film grating at the edge of the beam. Light is transmitted from LED to PD through the film grating. When the cantilever beam moves by external vibration, output light is modulated as sinusoidal signals. The characteristics of output signals are dominated by the spacing of the film grating and also by the size and the elasticity of the beam. Two output signals, having constant initial phase difference, are obtained by two gratings with 90 degree phase difference. Those two signals are used to determine phase angle, which is proportional to the displacement of the beam. Finally, the acceleration is determined from conversion equation between displacement and acceleration. This sensor is designed for monitoring the vibration of large and complex building in the low frequency range of below 7 Hz, and is particularly suitable to measure acceleration in electromagnetic environments.

냉부하검사(CST)로 살펴 본 원적외선 기능성 제품이 족부냉증에 미치는 영향 : A pilot study

이윤재,이경섭,Lee, Yoon-Jae,Lee, Kyung-Sub 대한한방체열의학회 2008 대한한방체열의학회지 Vol.6 No.1

Purpose: We investigated the effect of far-infrared radiating products on cold hypersensitivity of lower limbs using CST. Methods: 7 patients with cold hypersensitivity of lower limbs were investigated in this study. Exclusive criteria was skin diseases, spinal nervous disease and external wounds. They were asked to answer the VAS of cold hypersensitivity at baseline and after 3 weeks. We measured temperature of lower limbs with Spectrum 9000 MB (Dorex Inc, USA). We performed cold stress test (CST) by 3 thermographic observation using DITI : 1st was taken after 15 minutes resting at $25^{\circ}C$, the 2nd was immediately taken after 1 minute soak in $20^{\circ}C$ water, the 3rd was taken at 15 minutes after soak. We performed 3 times of CST : 1st CST was perfomed at baseline, 2nd CST was perfomred after 1 week and just observation, 3rd CST was performed after 1 week using far-infrared radiating products (lasner, UMT, Korea). Results: After using products, temperature of foot incresed more than thigh area, but there was no significance. There was no statistical difference of VAS, change of temperature and CST between before and after using far-infrared radiating products. Conclusion: There was no statistical effect of far-infrared radiating products on change of temperature of lower limbs.

분리된 고유공간을 이용한 잡음환경에 강인한 특징 정규화 기법

이윤재,고한석,Lee Yoonjae,Ko Hanseok 한국음향학회 2005 韓國音響學會誌 Vol.24 No.4

본 논문에서는 잡음에 강인한 음성인식을 위하여 고유공간에 기반을 둔 새로운 특징 정규화 기법을 제안한다. 일반적으로 평균과 분산의 정규화 (MVN)는 켑스트럼 상에서 수행된다. 그러나 최근에 고유공간을 이용한 MVN기법이 소개되었고, 그 고유공간 정규화 기법에서는 하나의 고유공간을 이용하였다. 이 과정에는 켑스트럼 상의 특징 벡터를 선형 주성분 분석 (PCA)행렬을 통하여 고유공간으로 변환시킨 후 MVN을 수행하는 과정이 포함된다. 이 방법에서는 전체 39차의 특징분포를 하나의 고유공간으로 표현하였다. 그러나 이 기법의 경우 전체 특징 분포를 표현함에 세밀함이 떨어지기 때문에 더욱 세밀한 분포의 표현을 위해 본 논문에서는 static 특징, 1차 미분 계수, 2차 미분계수에 각각 유일하고 독립적인 분리된 고유공간을 적용하는 것을 제안하였다. 또한 고유공간에서 정규화 된 훈련 데이터를 이용하여 모델을 만든다. 마지막으로 훈련 데이터의 분포와 잡음환경에서의 테스트 데이터의 분포 특성의 차이를 줄이기 위해 켑스트럼 상에서의 회전 기법을 적용시킨다. 그 결과, 기본적인 고유공간 정규화 기법보다 향상된 성능을 얻을 수 있었다. We Propose a new feature normalization scheme based on eigenspace for achieving robust speech recognition. In general, mean and variance normalization (MVN) is Performed in cepstral domain. However, another MVN approach using eigenspace was recently introduced. in that the eigenspace normalization Procedure Performs normalization in a single eigenspace. This Procedure consists of linear PCA matrix feature transformation followed by mean and variance normalization of the transformed cepstral feature. In this method. 39 dimensional feature distribution is represented using only a single eigenspace. However it is observed to be insufficient to represent all data distribution using only a sin91e eigenvector. For more specific representation. we apply unique na independent eigenspaces to cepstra, delta and delta-delta cepstra respectively in this Paper. We also normalize training data in eigenspace and get the model from the normalized training data. Finally. a feature space rotation procedure is introduced to reduce the mismatch of training and test data distribution in noisy condition. As a result, we obtained a substantial recognition improvement over the basic eigenspace normalization.

기자수첩 - 기름값 논란, 무엇이 문제인가?

이윤재,Lee, Yun-Jae 대한석유협회 2011 석유와 에너지 Vol.280 No.-

우리나라 가전산업의 현재와 미래

이윤재,Lee, Yun-Jae 한국전자정보통신산업진흥회 1997 電子振興 Vol.17 No.10

뇌혈관질환 후 발생한 욕창에 대한 치험 2례

이윤재,이성균,김정환,지동희,송철민,장통영,윤종민,손지영,신선호,임은경,Lee, Yun-Jae,Lee, Seong-Kyun,Kim, Jeong-Hwan,Ji, Dong-Hee,Song, Cheol-Min,Chang, Tong-Young,Yun, Jong-Min,Son, Ji-Young,Shin, Sun-Ho,Rhim, Eun-Kyung 대한한방내과학회 2004 大韓韓方內科學會誌 Vol.25 No.4

Pressure sore(decubitus ulcer) is the an ulceration and necrosis of the skin and underlying tissue usually occuring on a bony prominence of the body after prolonged or repeated pressure. This study was designed to evaluate the effects of an oriental medicine(Sipjeondaebo-tang) on pressure sores complicated by cerebrovascular diseases. Methods: As For treatment, we used Sipjeondaebo-tang. Results: Both patients were treated with Sipjeondaebo-tang. After treatment, the pressure sores of two patients were improved. Conclusions: This study suggests that Sipjeondaebo-tang is effective in treatment of pressure sores(decubitus ulcer) complicated by cerebrovascular diseases.

노인주택 면적 계획을 위한 예비노인층 및 노인층의 선호주거특성과 공간사용특성

이윤재,이현수,Lee, Youn-Jae,Lee, Hyun-Soo 한국주거학회 2008 한국주거학회 논문집 Vol.19 No.6

The purpose of the study is to investigate the characteristics of the elderly housing preference and spatial usage to plan floor space of the elderly housing by the respondents of the ages 50 to 79. Based on the result of the study, it is suggested that the elderly housing should be located in regards to social environmental factors rather than natural environmental ones. There are differences in preference for the space planning of housing units such as the number of rooms and bathrooms, and floor space depending on income level, so the housing should be differently planned to accept the difference of preference. On the other hand, there is not notable difference in furniture preference for each space. In the characteristics of spatial usage according to behaviors, high-income respondents demonstrate the characteristics of spatial usage in accordance with a western lifestyle. Thus, behaviors such as sleeping, watching TV, resting, reading, conversation, and receiving guests, occur using such things as beds, sofas, and dinning tables. On the other hand low-income respondents show a mixed western and traditional lifestyle. Thus many behaviors are done on the floor of bedroom and livingroom in addition to using furniture such as a sofa and chairs. Therefore, the way of spatial usage has to be reflected in the floor space planning. At least floor space of the provided rooms should be planned to accommodate the behavior of the elderly even though all of the rooms preferred can not be provided.

고속도로 민자사업 소개 및 제도개선 방안 고찰

이윤재,Lee, Yun-Jae 한국도로학회 2008 한국도로학회지 Vol.10 No.3