음향반향신호의 제거를 위한 개선된 직교투사법

윤현민,Yun Hyun-min 한국정보통신학회 2005 한국정보통신학회논문지 Vol.9 No.4

본 논문에서는 음향반향 제거기에서 음성에 대하여 반향제거를 위한 진보된 새로운 기술인 개선된 직교투사법을 제안하였다. 이 결과를 NLMS(normalized least mean square) 적응 알고리즘과 비교하여 보면 개선된 직교투사법은 큰 자기상관을 갖는 신호에 대하여 음향제거 과정이 개선되는 것을 보여준다. 본 논문에서 제안한 개선된 직교투사법의 과정을 검증하기 위하여 프로그램을 작성하여 컴퓨터 모의실험을 실행하여 잡음과 음성에 대해 두개의 적응 알고리즘을 사용하여 수렴곡선을 관찰하였다. 이 두개의 입력신호의 모의실험 결과로부터 본 논문에서 제안한 방법을 음성과 잡음에 적용시킨 결과 빠른 수렴과 ERLE(echo return loss enhancement)가 높음을 보여주었다. This paper proposes the improved orthogonal projection method as a new technique advancing the performance of the echo cancellation for speeches in the acoustic echo canceller. Comparing with the used NLMS adaptive algorithm, it shows that this method improves the performance of the echo cancellation for signals with the large auto-correlation. In order to testify performances of the orthogonal projection method whom this paper proposes, we have coded a simulation program and executed computer simulations. We observed convergence curves by using two adaptive algorithm for noises and speeches. From simulation results for two input signals, the proposed method shows the high ERLE and the fast convergence and the stable operation in case of using speeches as well as noises.

MOSFET의 Capacitor 에 관한 연구 ( A study on the Capacitor of MOSFET )

윤현민,이상목,김학선 한국통신학회 1992 한국통신학회 학술대회논문집 Vol.11 No.1

蜂鍼療法에 대한 考察 및 國內 硏究動向

尹炫珉,安昌範,曺恩眞 동의대학교 한의학연구소 2001 동의ㆍ경산 한의학 학술대회 Vol.5 No.-

By classifying and analyzing dissertations from the colleges of oriental medicine of Korea and articles and papers issued in the Korean journals of oriental medicine in last decade on bee venom, we could reach the following conclusions about recent tendency of research on bee venom within the sphere of oriental medicine in Korea. 1. Totally, in the studies of bee venom, more than seven articles of consideration papers and more than fifty experimental case reports have been published. 2. In the field of considerations papers, there were following articles: general and brief summary of bee venom therapy (3 articles), consideration by the help of computer search (3 articles), consideration of old oriental medicine documents (1 article), consideration connected with cancer (1 article). About the experimental case reports, we could find out next ones: report on the effects of anti-inflammation of bee venom (5 articles), on the analgesic effects (4 articles), on the amelioration of circulation of the blood (3 articles), arthritis (7 articles), anti-convulsions (1 article), anti-tumor (2 articles), neuronal activities (6 articles), brain neuronal activities (1 article), and immune response and toxicity (11 articles). 3. In the closer examination on the last articles on immune response and toxicity, they are classified by subjects into the effects on the immunoreaction 6 articles), toxicity and dose (6 articles), the stability (1 article), and research of production of anti-toxin (1 article). 4. By annual statistics, the concentrated and elaborated studies on bee venom started in 1992 with 3 articles, have come to the results of publication of more than 15 articles in 2000, and still in the situation of improvement by quantity and quality. 5. In the earlier period, before 1995, 15 articles on the bee venom's effects on anti-inflammation, analgesia, circulation of blood and 6 articles on characteristics, stability and dose of death of bee venom was published, respectively. Papers connected with arthritis have been issued from the beginning of research to the present day continually. All of five clinical observations have been made only after 1999, and more than 10 reports connected with anti-tumor and neuronal activities, especially, have been printed intensively in the latest days, after 2000.

대하(帶下)의 침구치료(鍼灸治療)에 관(關)한 고찰(考察)

윤현민,Youn, Hyoun-min 대한침구의학회 2004 대한침구의학회지 Vol.21 No.2

Objective : To review was to study acupuncture and moxibustion treatments for abnormal leukorrhea. Normal leukorrhea is always secreted in female vagina. It increased usually by infection (Trichomoniasis and Candidiasis), turmor and so on. Methods : We extracted the parts and acupuncture and moxibustion leukorrhea from ancient and modern oriental medical literature. We have got compared and analyzed 45 kinds of books since Nei Jing(內經). Results and Conclusion : In acupuncture therapy meridians of Bladder, Stomach, Spleen and Conception vessel were mostly used for them in connection with the functions of each meridians. The acupoint used on acupunture only were 78 acupoints. In particular, Chung-guk(cv3), Kwan-won(cv4) point of Conception vessel Meridian and Samum-gyo point of Spleen meridian are frequently applied in leukorrhea.

Axillary silicone lymphadenopathy caused by gel bleeding with intact silicone breast implants: a case report

윤현민,Chan Yeong Lee,Woo Jin Song 대한미용성형외과학회 2023 Archives of Aesthetic Plastic Surgery Vol.29 No.4

Gel bleeding following breast augmentation using silicone breast implants (SBIs) occurs when microscopic silicone droplets diffuse through the implant surface, potentially resulting in complications such as capsular contracture and immune responses related to breast implant illness. Prompt and reliable diagnostic measures are crucial, as the presentation of gel bleeding can resemble cancer, making an accurate diagnosis challenging. This report discusses a rare case of axillary silicone lymphadenopathy caused by gel bleeding in a 48-year-old woman with intact SBIs. Silicone lymphadenopathy can be suspected based on mammography, ultrasonography, and magnetic resonance imaging in patients with a history of SBI insertion, and confirmation can be obtained through a pathological examination. Excisional biopsy is generally recommended for symptomatic patients, while treatment may not be necessary for asymptomatic patients; However, removal can be considered if the patient indicates a preference for it. Patients with silicone lymphadenopathy require replacement of SBIs to examine the breast capsule and verify the integrity of the implant. This case highlights the importance of considering gel bleeding as a potential cause of silicone lymphadenopathy, even in patients with intact SBIs.

胡桃藥鍼이 人間의 신경교종 細胞에 유발된 低酸素症에 대한 防禦效果

尹炫珉,許宰榮,安昌範 대한침구의학회 2003 대한침구의학회지 Vol.20 No.1

胡桃藥鍼이 人間의 신경교종 細胞에 유발된 低酸素症에 대한 防禦效果

아동을 위한 지능형 서비스 로봇 활용 방안

윤현민 한국어린이미디어학회 2010 한국어린이미디어학회 학술대회 자료집 Vol.2010 No.6

Distant migration of copolyamide breast filler following mammography: a case report

윤현민,Woo Jin Song,Chan Yeong Lee,강상규 대한미용성형외과학회 2024 Archives of Aesthetic Plastic Surgery Vol.30 No.1

Copolyamide fillers, such as Aquafilling, have been used off-label for breast augmentation in many countries, including Korea. However, safety concerns have arisen due to reported complications, including induration, masses, mastalgia, firmness, asymmetry, migration, infection, and dimpling. We report the case of a 33-year-old woman who presented with distant migration of copolyamide breast filler to the left lower abdomen and inguinal area following mammography for breast cancer screening. This case highlights the potential risks associated with the migration of copolyamide breast fillers, particularly in the context of cancer screening procedures, and emphasizes the importance of awareness and vigilance among clinicians and patients.

肩井, 天?, 曲池의 피내침 요법이 肩痛에 미치는 효과

윤현민,김종희,이지원 대한침구의학회 2006 대한침구의학회지 Vol.23 No.5

Objectives : This study was to examine the effect of Intradermal Acupuncture therapy at Kyeonjeong, Cheonryo and Kokji on the shoulder pain. The research was conducted with non equivalent control group non-synchronized design. Methods : IThe subjects were the women who was suffering for shoulder pain, who are employed at two hospitals in Busan, from April to June , 2006. The 24 women were experimental group who were applied to Intradermal Acupuncture Therapy at Kyeonjeong, Cheonryo and Kokji, while the 20 women were control group who weren’t applied to any treatments. The severity of shoulder pain and the extent of the subjective symptoms of shoulder pain were pre-measured. The Intradermal Acupuncture therapy was done a total of 4 times, 2 times a week over 2 weeks and from 11 a.m. to 2 p.m. as an experimental treatment. As a post survey, the severity of shoulder pain, the frequency of shoulder pain and the extent of the subjective symptoms of shoulder pain were measured after one week and two weeks of experimental treatment. Research tools are Visual Analogue Scale by Cline et al. for measuring the severity of shoulder pain and the tool developed by Japans industrial fatigue research committee of the industrial hygienics society and modified. Results : There was a significant difference(F=4.132, p=0.019) for the severity of shoulder pain on the interaction between time and group. There was a significant difference(F=11.193, p=0.000) for the the extent of the subjective symptoms of shoulder pain on the interaction between time and group. Conclusion : Based on the above results, it can be determined that Intradermal Acupuncture Therapy at Kyeonjeong, Cheonryo and Kokji can be used as the effective treatments for reducing of shoulder pain.

腦卒中 患者 形態에 關한 臨床硏究

윤현민,안창범,송춘호,손인석,장경전 대한침구학회 2003 대한침구의학회지 Vol.20 No.2

Clinical observation was made on 52 cases of Stroke that were confined through brain CT, MRI scan. The Stroke cases wee classified into the following kinds cerebral infarction, cerebral hemorrhage, cerebellar or brain stem infarction, cerebellar or brain stem hemorrhage. and among the 52 cases of Stroke cerbral infarction was noticed in 75.00%, cerebral hemorrhage in 11.54%, cerebellar or brain stem infarction in 9.52%, cerebeller or brain stem hemorrhage in 3.85%. The ratio between males and females was 1.74:1 in the whole groups of Stroke and most cases were over 60 of age. As the time of hospitalization, most patients hospitalized from 1 day after stroke to 7 days after stroke. And as the course of hospitalization, most patients hospitalized first. Among the preceding disease at the onset of Stroke hypertention was noted in 32.69%, and deabetes mellitus or heart problem was noted frequently(15.39%). Electrocardiography findings were as follows: The normal was noted in 53.85%, the abnormal in 46.15%. And as the abnormal, left ventricular hypertrophy was noted in 17.54%. The predisposing factors or conditions at the onset of brain infarction were usually initiated during the time of sleeping and those of brain hemorrhage chiefly during the time of execising like overwork or walking etc. It was noted that smoking a pack of cigarette showed highest disease rate(33.33%) among the average of smoking amount of one day in case of man. Prior to attack, the most chiefly complain was dyspnea or discomfort on chest region. And 30.70% of patients had no previous sign. There were a large number of recurrent cases. The first attack was noted in 71.15%, the 2nd attack in 23.08%, the 3rd attack in 5.77%.