• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.20 no.9
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• pp.822-827
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• 2010

In this study, it is experimentally investigated how bell acoustics are influenced by the internal cavity of the bell and the gap between the bell bottom and the floor. Acoustic transmission function and natural frequency of a test bell are measured and analysed. Experimental study is conducted to evaluated how the resonance effect influences the bell sound and how the bell sound is different according to the striking condition and the measurement direction. Acoustic resonance frequency of the cavity-gap system is predicted by boundary element analysis using SYSNOIS and the validity of the predicted result is verified by experiment. The result of the study could be applied to determine the optimal gap size which makes the bell sound strong and long.

• Journal of Korea Multimedia Society
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• v.18 no.8
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• pp.968-979
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• 2015

In this paper, we study a vibration bell App which shows waiting sequence numbers by utilizing smartphones to solve an inconveniently long waiting time from ordering to getting foods in restaurants and coffee shops. Unlike existing independently developed hardware and software, the vibration bell App is developed to manage and integrate customer management service, POS service in shops, and group shop management services. The functions of the vibration bell App include two-way communications based on NFC- issuing waiting sequence numbers and electronic coupon, showing event information, and transferring user information. Furthermore, the user's personal information is minimized by recognizing the pre-existing information of the user's smartphone. Replacing the shop's vibration bell system with the vibration bell APP, the shops can reduce the cost of construction and maintenance by up to 1/10, compared to the cost of for existing vibration bell systems. Moreover, the customer's preference and current sales trend can be easily figured out. Thus, it will have a great effect on the future marketing strategies.

• Journal of Acupuncture Research
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• v.31 no.1
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• pp.149-158
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• 2014

Objectives : The aim of this study is to investigate the influence of anxiety and depression on motor recovery of acute Bell's palsy to estimate how much psychological factors affect the clinical prognosis. Methods : A total of 20 inpatients with acute unilateral Bell's palsy within 1 week of onset participated in this study. The severity of participants' facial palsy was measured by Yanagihara(Y-system) score, FDI and House-Brackmann scale at the time of 1 week and 3 weeks from the onset. The motor recovery of acute Bell's palsy is defined as ${\Delta}Y$-system during 2 weeks. Beck anxiety scale(BAI) and the center for epidermiologic studies depression scale(CES-D) were adopted to assess anxiety and depression, respectively. Correlation analysis and linear regression analysis were conducted between ${\Delta}Y$-system and prognostic factors including anxiety and depression. Results : Significant associations were found between ${\Delta}Y$-system and depression(CES-D) but no significant associations were found between ${\Delta}Y$-system and other prognostic factors, hypertension, diabetes, postauricular pain, disgeusia, age, degree of initial palsy and anxiety(BAI). And a regression equation with 0.295 for coefficient of determination was obtained. Through this analysis, the ${\Delta}Y$-system can be predicted using regression equation which cover 29.5 % of depression index(CES-D). Conclusion : Depression is a significant clinical prognostic factor on motor recovery of acute Bell's palsy. So, Bell's palsy treatment should be combined with psychological care and support.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.456-460
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• 2008

Digilog Book lets users feel analog book and digital contents by combining each advantage of analog sensibility and digital sensation. This paper mentions about technical details for implementing an example of Digilog book: a temple bell experience system. Our system includes providing multisensory feedback to users, substituting fiducial marker with figure marker, presenting visual effect when a temple bell appearing on a 2D plane, pushing augmented buttons using bare fingers for observation of the bell, and lastly pointing a specific part of the bell for obtaining description on that part. The implemented temple bell experience system can motivate users to experience cultural heritages of our country as educational contents.

• Journal of Physiology & Pathology in Korean Medicine
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• v.26 no.5
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• pp.788-792
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• 2012

The purpose of this report was to show that the oriental medical treatment is effective on recurrent bell's palsy. We investigated 1 patient with recurrent bell's palsy who was a case of recurrent ipsilateral bell's palsy with four distinct episodes over the past 11 years. As a treatment, Ligigepung-san(Liqiqufeng-san), Acupuncture, and Moxa were tried upon the patient for 40 days in order to relieve the symptom of palsy. In terms of observing the changes of symptoms, the progress of patient's condition was evaluated periodically by using the House-Brackamnn's grading system. In accordance with the observation under House-Brackamann's grading system, the patient's facial nerve palsy had gradually improved throughout the treatment. Therefore, this report suggests that Ligigepung-san (Liqiqufeng-sa n), Acupuncture, and Moxa are probably effective in the treatment of recurrent Bell's palsy.

• The Journal of Korean Obstetrics and Gynecology
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• v.21 no.3
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• pp.245-256
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• 2008

Purpose: Bell's palsy is a peripheral facial palsy of unknown etiology. During pregnancy, there is an increased incidence of Bell's palsy. Due to the nature of pregnancy, it is unlikely to treat Bell's palsy during pregnancy. The purpose of this study is to report on 3 patients with Bell's palsy during pregnancy, who improved by oriental medical treatment. Methods: The patients who had Bell's palsy during pregnancy were treated with oriental medical treatment such as herbal medication and acupuncture therapy. House-Brackmann facial nerve grading system was used to estimate the efficacy of these treatments. Results: After the oriental medical treatment, the clinical symptoms of Bell's palsy during pregnancy were improved. Conclusion: This case study shows that the oriental medical therapy is effective in treating Bell's palsy during pregnancy. Further systematic studies and specific guidelines of Bell's palsy during pregnancy would be of much value.

• Journal of Acupuncture Research
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• v.19 no.5
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• pp.73-91
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• 2002

Objective : The purpose of this study is to assess treatment of children's bell's palsy based on physiological and pathological character. Methods : At the age of 0 to 15, 30 bell's palsy out-patients who visited and treated more than 3weeks at the Department of Acupuncture & Moxibustion, Dong-indang Oriental Medicine Hospital, from 07-01-2001 to 06-30-2002. They were treated with Acupuncture, Herb, Aqua-acupuncture, Physical therapy and measured by HBGS(House-Brackmann Grading System) and DEFS(Detailed of Facial Symmetry of Phillsbury and Fisch) at visit and 3 weeks after. Result and Conclusion : Children's bell's palsy is mostly caused by recent upper respiratory infection and developed most frequently on March, September, seasonally in Spring, Autumn. A group of children's bell's palsy was marked much higher than a group of adult's bell's palsy conducted by Kim's report with oriental medicine in treatment outcome. But we discovered that there was not the signifcant difference between two groups.

• The Journal of the Acoustical Society of Korea
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• v.30 no.4
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• pp.223-230
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• 2011

Korean bell is hung with some air gap between the bell bottom and the ground. In addition, it has a peculiar acoustic element, so called resonance cavity below the bell. A proper design of the air gap and cavity size dramatically amplifies the bell sound by resonance effect. Bell interior cavity, air gap and resonance cavity consist of an acoustic cavity system. When the acoustic cavity frequency coincides with the natural frequency of the bell body, the frequency component is significantly amplified. On the Sacred Bell of the Great King Seongdeok, this study proposes a resonance condition of the cavity system considering air gap effect for the first time. With the exact dimension of the bell, boundary element analysis is performed using SYSNOISE. Finally, this study reveals how the temperature in season influences the resonance condition and proposes a concept of variable type resonance cavity. By using the variable type resonance cavity, the cavity size is controlled on site and exact resonance is available regardless of temperature difference in season.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.7
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• pp.176-183
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• 2020

A ship has three types of diving systems (Diver Stage Diving, Wet Bell Diving and Scuba Diving) to carry out a search-and-rescue operation. To reduce the possibility of decompression sickness, any diving systems shall comply with the decompression procedure according to the decompression table corresponding to the diving depth and diving time. The decompression procedure is largely divided into two methods: underwater decompression and underwater-onboard decompression. In particular, the surface interval shall not exceed 5 minutes, which is the phase from underwater decompression to underwater-onboard decompression, in accordance with the U.S Navy Diving Manual. However, the surface interval is greater than 5 minutes as a result of using Wet Bell Diving. This paper describes the result of cause analysis and measurement with improved Wet Bell Diving. Using improved Wet Bell Diving reduced the surface interval to less than 5 minutes. The result of the research can be used for operation and improving the performance of diving systems.

• Journal of Physiology & Pathology in Korean Medicine
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• v.28 no.1
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• pp.89-93
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• 2014

The aim of this study was to investigate that thermal imaging is objective and effective to evaluate the severity of Bell's palsy. We investigated 19 cases of patients in college of Oriental Medicine, Iksan Oriental medical hospital at Wonkwang university who were diagnosed with Bell's palsy. The degree of palsy was evaluated with House-Brackmann grading system(HBGS) before treatment, then the thermal difference of the face was calculated by thermal imaging, and finally the correlation between HBGS and thermal difference was analyzed. The significance correlation was found between HBGS and thermal imaging's thermal difference. According to the images taken from 17 patients' DITI's temperature value and HBGS's palsy grade, they significantly were correlated. As thermal imaging's thermal differences got larger in number, the palsy grade had increased. These results suggest that thermal imaging identified to be a relatively objective examination method for evaluating the severity of Bell's palsy.