• Title/Summary/Keyword: bell

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An analysis of the Sound Radiation Characteristics of the King Song-Dok Bell Using Cylindrical Acoustic Holography (원통형 음향 홀로그라피를 이용한 성덕대왕 신종의 방사음장 특성 분석)

  • Kim, Yang-Hann;Kim, Sea-Moon
    • The Journal of the Acoustical Society of Korea
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    • v.16 no.4
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    • pp.94-100
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    • 1997
  • In order to investigate the radiation of sound from the King Song-Duk bell, we measured the sound pressure around the bell at every 30$^{\circ}$ using a microphone line array which was composed of 30 microphones separated by 15cm;total number of measurement point was 360. The sound field was estimated by using cylindrical acoustic holography. The spectrum of measured sound pressure demonstrates that it is almost like white noise in the very beginning, but in 10 seconds two close frequency components(64.06Hz, 64.38Hz) remain and make a famous beating. This beating sound is often believed to make unique sound of the King Song-Duk bell. The mode shapes of that frequency components are the same except that one is rotated by 45$^{\circ}$ from the other. This phenomenon occurs at the other pairs of components are the same except ones in very high frequency range where the mode shapes are rather complex.

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Clinical Comparison Study on Bell's Palsy Patients by the Period of Disease (병력기간과 말초성 안면신경마비와의 상관성 연구)

  • Hong, Jang-Mu;Shin, Kyung-Min;Seo, Gwang-Myung;Choi, Soon-Young;Bae, Kwang-Rok;Park, Ji-Young;Baek, Yong-Hyeon;Nam, Dong-Woo;Lee, Yun-Ho
    • Journal of Acupuncture Research
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    • v.26 no.2
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    • pp.71-77
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    • 2009
  • Objectives : This study was designed to evaluate the influence of the period of disease on Bell's palsy patients Methods : We investigated 40 cases of patients with peripheral facial palsy who visited Yumin Oriental Hospital from 1st January to 31st August, 2008 with both oriental and western medical therapy and classified them as period of disease. The period of disease of Group A was within 3 days. The period of disease of Group B was from 4 to 10days. We evaluated the treatment effect of each group by House-Brackmann grade before treatment and 1, 2 week treatment. Results: 1. There was a statistical significant difference in period of disease between Group A and Group B. 2. After 1 week treatment, Group A showed more recovery compared with Group B. 3. After 2 week treatment, there was no statistical significant difference in House-Brackmann grade between Group A and Group B Conclusions : These results suggest that early treatment could be more effective in recovery of Bell's palsy.

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The Clinical Observation of Diagnostic value in Bell's palsy with Digital infrared Thermal Imaging (구안와사환자에서 D.I.T.I.의 진단적 가치에 대한 임상고찰)

  • Oh, Sang-Deog;Lim, Seung-Man;Baek, Eun-Tan;Kim, Young-Tae;Hong, Sae-Young;Ra, Su-Yeon;Shin, Hyoun-Su
    • The Journal of Internal Korean Medicine
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    • v.22 no.4
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    • pp.573-578
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    • 2001
  • Objective: This study was carried out to investigate the correlation between prognosis and differential temperature of Digital infrared Thermographic Imaging in Bell's palsy. Methods: The clinical data and thermographic images were analyzed on 50 cases of Bell's palsy who were treated ambulatory in Dong-so oriental hospital from October 2000 to May 2001 And 32case were selected who underwent thermographic imaging within 7days of onset. Results: There was no statistic significance between ${\Delta}T$ and the length of treatment, but the length of treatment tends to grow as ${\Delta}T$ increased. The length of treatment was shortest in normal thermal pattern, followed by hyperthermal and hypothermal. Conclusions: According to the results, there was a tendency that ${\Delta}T$ value is proportional to treatment days, although it is not significant statistically.

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In situ acoustic characteristics of the large jellyfish Nemopilema nomurai in the East China Sea (동중국해에서 노무라입깃해파리의 in situ 음향산란특성)

  • Yoon, Eun-A;Hwang, Doo-Jin;Shin, Hyeong-Ho;Gwa, Du-Seong;Cha, Cheol-Pyo
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.48 no.3
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    • pp.256-268
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    • 2012
  • The Nemopilema nomurai is a large jellyfish attaining a weight of 200 kg and bell diameter of 2 m when fully grown. To prevent damage to this species, this study determined the acoustic characteristics of N. nomurai using frequencies 38 and 120 kHz. The CPUE of N. nomurai and the averaged SV of 38 and 120 kHz had a lower (+) correlation coefficient and relationship at 120 kHz (R=0.51) than at 38 kHz (R=0.15) was significant. In addition, the averaged SV at 120 kHz was higher than at 38 kHz. The ${\Delta}MVBS_{120-38}$ in section catches ${\geq}97.8%$ wet mass of N. nomurai was -2.2 to 5.6 dB. The ${\Delta}TS_{120-38}$ in situ TS was extracted in sections catches of only N. nomurai by FMT. It was found that the averaged in situ ${\Delta}TS_{120-38}$ were at 0.6 and 0.1 dB. Furthermore, it results showed a close relationship between the bell diameter and TS of N. nomurai. The dominance of smaller N. nomurai (11.0~20.0 cm bell diameter in the air) corresponded to a similar proportion of low TS values (-69.0~-65.0 dB). A small number of larger N. nomurai (25.0~38.0 cm bell diameter in the air) were collected, in which TS values were the highest (-62.0~-58.0 dB).

Inter-annual occurrence variation of the large jellyfish Nemopilema nomurai due to the changing marine environment in the East China Sea (동중국해에서 해양환경 변화에 따른 노무라입깃해파리의 연간 출현 변동 파악)

  • Yoon, Eun-A;Cha, Cheol-Pyo;Hwang, Doo-Jin;Yoon, Yang-Ho;Shin, Hyeong-Ho;Gwak, Du-Seong
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.48 no.3
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    • pp.242-255
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    • 2012
  • The Nemopilema nomurai a very large jellyfish that has been found in the East China Sea and is now are migrating to Korea and Japan. To investigate the occurrence of N. nomurai based on the changing marine environment of the East China Sea, we conducted field survey in the early summer from 2006-2008. We observed the marine environment using CTD and the occurrence of N. nomurai using FMT and bottom trawling. We caught the most N. nomurai in 2007 and the fewest in 2008 and environment factors influencing its are more sensitive temperature than salinity. Large quantities of N. nomurai with a small bell diameter were caught in 2007 and large individuals with a significant bell diameter were caught in 2008. This appeared which between the catch and bell diameter of N. nomurai had (-) correlation (R=-0.988, p=0.098). Meanwhile, the spatial distribution of N. nomurai concentrations in lower salinity mixed seawater inflow in Changjiang Diluted Water.

Dynamics and Control of 6-DOF Shaking Table with Bell Crank Structure

  • Jeon, Duek-Jae;Park, Sung-Ho;Park, Young-Jin;Park, Youn-Sik;Kim, Hyoung-Eui;Park, Jong-Won
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.296-301
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    • 2005
  • This paper describes the kinematics, dynamics and control of a 6-DOF shaking table with a bell crank structure, which converts the direction of reciprocating movements. In this shaking table, the bell crank mechanism is used to reduce the amount of space needed to install the shaking table and create horizontal displacement of the platform. In kinematics, joint design is performed using $Gr{\ddot{u}}bler's$ formula. The inverse kinematics of the shaking table is discussed. The derivation of the Jacobian matrix is presented to evaluate singularity conditions. Considering the maximum stroke of the hydraulic actuator, collision between links and singularity, workspace is computed. In dynamics, computations are based on the Newton-Euler formulation. To derive parallel algorithms, each of the contact forces is decomposed into one acting in the direction of the leg and the other acting in the plane orthogonal to the direction of the leg. Applying the Newton-Euler approach, the solution of inverse dynamics is almost completely parallel. Only one of the steps-the application of the Newton-Euler equations to the platform-must be performed on one single processor. Finally, the efficient control scheme is proposed for the tracking control of the motion platform.

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Clinical Studies on Obesity and Right-left of Patients with Bell's palsy (구안와사(口眼喎斜)의 비수(肥瘦)와 좌우(左右)에 관한 임상적 고찰)

  • Choi, Kyu-Ho;Lee, Youn-Kyu;Lee, Jae-Guen;Son, Ji-Young;Lee, Yeon-Kyeong;Kang, Seok-Bong;Shin, Hyeon-Cheol
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.21 no.6
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    • pp.1619-1623
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    • 2007
  • This study was desiged to investigate the Obesity and Right-left(region) of Patients with Bell's palsy. We measured the sex, age, BMI and pulse diagnosis of 149 patients who were diagnosed as Bell's palsy. The results were as follows : In distribution of sex, the ratio of male was 52.35%(78 cases), female 47.65%(71 cases). The distribution of age revealed that 40s was the most in 50 cases(33.6%). The distribution of region in facial palsy was left 73 cases, right 76 cases(1:1.04). In distribution of region in facial palsy patients with obesity, the ratio of left was 32.86%(49 cases), right 34.23%(51 cases). But facial palsy patients with obesity was the most in 100 cases(67.11%), low weght was 3 cases(2.01%). In distribution of pulse diagnosis in facial palsy patients with obesity, the ratio of huh-mac(虛脈) was 63.64%(42 case), sil-mac(實脈) 36.36%(24 cases). The huh-mac(虛脈) was simlliar to gi-huh(氣虛). So we found that the facial palsy patients with obesity was more gi-huh(氣虛) than with low weght. In distribution of region in facial palsy patients with obesity-huh-mac(虛脈), the ratio of left was 41.38%(12 cases), right 58.62%(17 cases).

The Formative Characteristics of Hats Shown in Prêt-à-porter Collection (프레타포르테 컬렉션에 나타난 모자의 조형적 특성)

  • Yoo, Hyun Jeong;Kim, Jeong Mee
    • Journal of the Korea Fashion and Costume Design Association
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    • v.18 no.4
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    • pp.141-158
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    • 2016
  • The objective of this study is to examine the type and characteristics of hat, and also to analyze the formative characteristics of hats shown in $Pr{\hat{e}}t-{\grave{a}}$-porter Collection. The literature review focused on the relevant technical books and preceding researches while the case study targeted 1,561 photos of hats shown in the 'Donga TV Collection'. The research range was from the S/S season of 2012 to the F/W season of 2015/16. The results of this study are as follows. 1. A hat is composed of crown and brim. In the results of classifying hats based on it, there were 572 crown-type hats, 533 hat-type, 219 cap-type, 156 irregular-type, and 81 brim-type in the order. 2. For the crown-type hats, they were mainly like cylindrical-type, bell-type, dome-type, and circle-type, using colors like black, beige, brown, red, mustard, and grey, and materials like wool, fur, velvet, straw, and metal while they were decorated with bead or lace. 3. For the hat-type hats, they were mainly like bell-type, ladder-type, and hemisphere-type, using colors like peach, white, gold, brown, and khaki, and materials like silk, cotton, straw, and wool while they were decorated with feather and ribbon. 4. For the cap-type hats, they were mainly like hemisphere-type, using colors like white, black, khaki, mustard, and purple, and materials like fur, leather, and wool while they were decorated with wappen and chain. 5. For the irregular-type hats, they were mainly like sandglass-type, box-type, animal-type, trumpet-type, and bell-type, using colors like purple, orange, pink, yellow, and sky-blue, and materials like metal, feather, mesh, plastic, straw, and linen while they were decorated with ribbon, net, bell, and flower. 6. For the brim-type visor, they were mainly like square-type, using colors like transparent, yellow, and black, and materials like plastic, cotton, leather, and metal.

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Research Trends on Non-surgical Treatment of Peripheral Facial Paralysis Sequelae (말초성 안면마비 후유증의 비수술적 치료에 관한 국내외 연구 동향)

  • Lee, Sung-Eun;Yoon, Hwa-Jung;Ko, Woo-Shin
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.31 no.4
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    • pp.42-64
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    • 2018
  • Objectives : The purpose of this study was to investigate the non-surgical treatment of peripheral facial paralysis sequelae such as bell's palsy and Ramsay-hunt syndrome during last 10 years. Methods : We searched articles in the RISS, MEDLINE, CAJ from January, 2008 to June, 2018. Articles on the non-surgical treatment of bell's palsy and Ramsay-hunt syndrome sequelae were included. We extracted data about treatments, characteristics of intervention, outcomes from the included studies and classified in to 4 categories such as case studies, RCTs, nRCTs, literature reviews. Results : 132 potentially relevant studies were identified, of which 60 studies met our inclusion criteria. Of 60 included studies, 30 were case reports, 22 were RCTs, 4 were nRCTs, and 4 were reviews. China (81.8%) were the most common by country, bell's palsy(81.7%) by disease, and case reports(50%) by study type were the most common. Symptoms were lagophthalmos, asymmetry, contracture, spasm, dacryorrhea, synkinesis, paresthesia, crocodile tears mostly in the order of frequency, and these symptoms occurred at least one month after the onset of symptoms. The most common method of treatment was acupuncture, which was used in 49 studies. As the evaluation variables, the effective rate was the highest in 25, House-Brakmann grading system in 17, and Sunnybrook facial grading system in 7. In 95% of the studies, after-treatment was reported to be cured, but objectivity is low. Conclusions : This study suggests that Korean medicine such as acupuncture can play a valid role in the non-surgical treatment of peripheral facial paralysis sequelae. In the future, a systematic and well-designed clinical study is needed for treatment of peripheral facial paralysis sequelae.

Effect of Tone Colors on Meridians by Yangdorak Diagnosis (음색(音色)이 경락(經絡)의 양도락(良導絡) 수치(數値)에 미치는 영향)

  • Son, You-Suk;Kang, Jung-Soo
    • Journal of Acupuncture Research
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    • v.22 no.4
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    • pp.87-93
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    • 2005
  • Objectives : The aims of this study were to observe how effect bell sound, water sound and drum sound have on origin regions for acupuncture of twelve meridians by yangdorak diagnosis, and to practice it clinically. Methods : Firstly, ire measured origin regions for acupuncture of twelve meridians by yangdorak diagnosis, after we relieved a subject for 10 minutes. Secondly, we measured origin regions for acupuncture of twelve meridians by yangdorak diagnosis, after a subject listened to bell sound, water sound and drum sound for 3 minutes. Results : Through testing the effects of bell sound, water sound and drum sound on numerical values of origin regions for acupuncture of twelve meridians by yangdorak diagnosis, we had follows; 1. On bell sound, the numerical values of origin regions for acupuncture of twelve meridians by yangdorak diagnosis descended from 38.8 to 28.8 in left, and from 40.4 to 30.8 in right. 2. On water sound, the numerical values of origin regions for acupuncture of twelve meridians by yangdorak diagnosis descended from 55.4 to 39.4 in left, and from 56.0 to 41.9 in right. 3. On drum sound, the numerical values of origin regions for acupuncture of twelve meridians by yangdorak diagnosis descended from 39.1 to 30.1 in left, and from 38.4 to 38.0 in right. Conclusion : Through testing the effects of tone sounds on numerical values of origin lesions for acupuncture of twelve meridians by yangdorak diagnosis, we confirmed that change of tone colors go by five elemental theory rule and have effect on enery and blood metabolism.

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