• 대한치과교정학회지
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• 제17권2호
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• pp.289-297
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• 1987

For the comparisons of dental archs and crowdings between musical wind instrument players groups and non-wind instrument players groups, 64 male wind instrument players and 31 non-wind instrument players group were selected. The results of the measurements were as follow. 1 Upper intercanine widths, upper basal arch widths, lower basal arch widths were statistically significant between musical wind instrument players groups (Class A, Class B) and non-wind musical instrument players group. 2 The mean value of upper intercanine width m Class A ($373{\pm}2.3mm$) was greater than than in Class B ($362{\pm}17mm$) and non-wind musical instrument players group($360{\pm}16mm$) 3 The mean value of lower basal arch width m Class B ($422{\pm}25mm$) was greater than that in non wind instrument players group ($395{\pm}28mm$). 4 The differences in the mean values of crowdings between Class A and Class Band non-wind instrument players group were not statistically significant.

• The Journal of Korean Physical Therapy
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• 제34권5호
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• pp.248-254
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• 2022

Purpose: This study was undertaken to identify the effect of amateur wind musical performance and choir activity on pulmonary function, and to determine the usefulness as a respiration training program by measuring the pulmonary functions of subjects. Methods: A total of 90 subjects (wind instrument players group=30, choir members group=30, control group=30) participated in the experiment. Pulmonary function test (FVC, FEV₁, FEV₁/FVC ratio, MVV, SVC, PEF, FEF 25-75%, IRV, ERV) was conducted using a spirometer (CardioTouch 3000S, Bionet, Seoul, Republic of Korea). Each factor was measured 3 times to meet the American Thoracic Society criteria, and the highest value was used in the analysis. Results: Comparing pulmonary function between the amateur wind instrument players (WP), amateur choir members (CH), and control (CG) groups revealed significant differences in FEV₁, FVC, FEV₁/FVC, and ERV (p<0.05). Highest values were obtained in the WP group. Significant differences were obtained for various factors in the multiple regression analysis of practice year (PY), practice time per week (PTPW), and exercise time per week (ETPW): FEV₁ and FVC in PY, FEV₁/FVC in PTPW, and FEV₁/FVC, MVV, PEF, and FEF (25-75%) in ETPW. Conclusion: Amateur wind instrument performance effectively improves lung function and is useful as a breathing training program for preventing debilitation and improving respiratory function.

• 한국통신학회논문지
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• 제35권3C호
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• pp.295-301
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• 2010

본 논문에서는 프로펠러를 사용한 전자관악기를 위한 취구의 모델링 방법을 제안한다. 이 방법은 프로펠러의 각속도에 의한 바람의 세기를 계산을 빠르게 하도록 풍속계의 방식을 이용한 것이다. 풍속계의 경우에, 바람의 세기가 프로펠러의 각속도에 비례한다는 속성을 이용하여 바람의 세기를 계산한다. 하지만, 프로펠러의 각속도로부터 기대하는 바람의 세기가 계산되기까지 과도시간이 있기 때문에, 바람의 세기와 프로펠러의 각속도는 일대일대응이 아니다. 이 문제를 개선하기 위하여, 풍속계를 선형 시스템으로 해석하여, 그 시스템의 임펄스 응답과 프로펠러의 각속도를 디컨벌루션하여 바람의 세기를 추정한다. 실험으로 제안된 시스템의 타당성을 입증하기 위하여, 모터와 프로펠러, 엔코더로 구성된 취구 모델을 디자인하였다. 이 방법으로 바람의 세기를 추정한 결과는 이 시스템이 기존의 풍속계의 방법 보다 8배 빠른 시스템을 보여주었다.

• Journal of Periodontal and Implant Science
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• 제24권2호
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• pp.390-396
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• 1994

This study investigates the effect of wind instrument playing on the periodontal condition by comparing and analyzing wind instrument players and non-wind instrument players by various clinical paramenters, including periodontal index, bleeding index, simplified oral hygiene index, and non-functional tooth index. The subjects consist of 65 wind instrument players and 31 non-players. The players were divided into 4 groups ; Those who use cup-shaped mouthpieces as Group A, single reed mouthpieces as Group B, double reed mouthieces as Group C, and hole mouthpieces as Group D. Non-players are designated as Group E. The results are as follows ; 1. Periodontal Index Group A recorded $1.2{\pm}0.7$, Group B $1.1{\pm}0.7$, Group C $1.3{\pm}0.5$, Group D $2.1{\pm}0.5$, and Group E $0.9{\pm}0.6$, with no statistically significant differences among the groups. 2. Bleeding Index Group A shwed 0.23, Group B 0.25, Group C 3.0, Group D 0.38, and Group E 0.23, with no statistically significant differences among the groups. 3. Non-functional Tooth Index Group A recorded 2.0, Group B 1.0, Group C 3.0, Group D 0, Group E 0.7, with no statistically significant differences among the groups. 4. Simplified Oral Hygiene Index Buccal sides of maxillary 1st molars, lingual sides of mandibular 1st molars, labial sides of maxillary anterior teeth, and lingual sides of mandibular anterior teeth were investigated, and there was no statistically significant differences among the groups.

• 재활복지
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• 제21권1호
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• pp.233-252
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• 2017

본 연구는 호흡근의 지속적 훈련이 필요한 경수손상 환자에게 취주악기를 사용한 음악치료가 호흡, 구강 운동 및 조음에 미치는 영향에 대해 알아보고자 하였다. 시행되었던 프로그램의 참여자 중 경수 손상환자 군에 해당하는 3명의 결과를 선별하여 사후 데이터 분석 하였다. 프로그램에 사용할 취주악기로 호기와 흡기를 모두 활용하는 하모니카를 선택하였다. 기간은 총 6주간 주 1회 30 ~ 40분씩 시행하였고, 소그룹으로 진행 후 개별적으로 연습을 유지하도록 당일 진행내용이 자료로 제공되었다. 평가는 호흡관련 요소인 최대 호기량과 취주악기의 특징을 반영한 구강운동 그리고 조음검사로 시행하였고, 이에 대해 사전사후 결과를 비교하여 확인하였다. 분석결과 최대 호기량이 사전보다 평균 25ml 증가하였으며, 조음은 3.16점 증가하였다. 구강운동은 사전보다 사후에서 11.67점 움직임이 증가하였고, 세부항목 비교 시 입을 제외한 턱과 혀에 대한 점수에서 구강운동기능의 증가가 확인되었다. 이러한 연구결과를 토대로 본 연구는 취주악기를 사용한 음악치료가 경수손상 환자의 호흡재활 분야에 실천적이고 효과적 중재방안이 될 것으로 생각한다.

• 센서학회지
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• 제26권1호
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• pp.66-72
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• 2017

The three dimensional ultrasonic anemometer was constructed to reduce the disadvantages of the two-dimensional anemometer and to be free from the use environment. Three pairs of transmitting and receiving ultrasonic sensors were designed to face each other at an angle of $45^{\circ}$ to the upper and lower surfaces at intervals of $120^{\circ}$. 200 kHz ultrasonic sensor Oscillation, transmission and reception, level detection, power supply circuit were designed and U, V, W wind speed vector components were obtained by measuring the time of first received ultrasonic pulse by transmitting pulse ultrasound. It is implemented as firmware in ARM Coretex-M3 processor so that horizontal and vertical wind direction and wind speed can be converted into digital signal by vector calculation. In this study, The three-dimensional ultrasonic anemometer can complement the disadvantages of the two-dimensional anemometer (mechanical and ultrasonic), and it is expected to gradually replace the two-dimensional anemometer due to its high utilization rate by collecting additional information such as vertical wind.

• 동의생리병리학회지
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• 제23권6호
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• pp.1226-1233
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• 2009

Common cold occurs frequently and occupies an important position in medical treatment however obvious treatment is not suggested. There has been no agreement of pattern identification for common cold in oriental medicine. The purpose of this study is to develop a standard instrument of pattern identification for common cold which will be applied to clinical research. The items and structure of the instrument were based on review of published literature. The advisor committee on this study was organized by 9 oriental respiratory internal medicine professors of 11 oriental medical colleges nationwide. The experts attended 3 consultation meetings and discussed developing the instrument, and we also took professional advices by e-mail. The results were as follows; First, we divided the pattern identification of common cold into nine pattern: Wind-cold type, Wind-heat type, Contain summerheat type, Contain dampness type, Qi deficiency type, Blood deficiency type, Yang deficiency type, Yin deficiency type, Influenza. Second, we got the mean weights to each symptom of nine pattern identification which had been scored on a 5-point scale - ranging from 0 to 4 by the 9 experts. Third, we made out the Korean instrument of the pattern identification for common cold. It was composed self reporting questionnaire and researcher reporting questionnaire. Though this study is not proved about validity, reliability, the instrument of pattern identification for common cold is meaningful and expected to be applied to the subsequent research. And also, we hope to improve the instrument and make up for this study through various research and discussion.

• 한국환경과학회지
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• 제10권5호
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• pp.323-327
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• 2001

A new method is developed to estimate the evaporation of water from a surface with high accuracy and resolution. The principle of new method is to detect a weight change of buoyant weight according to a change in water level of Class A Pan mesured by the use of a strain-gauge load cell. Field test of evaporation recording new instrument was carried out at Suwon for 10 days July 1999. It is possible in field observation to measure hourly evaporation amount by newly developed evaporation recording instrument in Class A Pan against strong solar radiation. Present study provide a possibility of domestic high accuracy instrument development below than 0.1mm water level measurement accuracy. If there is low humidity and high wind speed conditions which is possible to evaporate from water surface during night time. And it needs continuous study to understand between meteorological elements and latent heat effect at ground level by field observation study using high accuracy evaporation recording instrument.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2011년도 춘계학술대회 논문집
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• pp.302-307
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• 2011

In this study, peak frequencies of korean traditional wind instruments according to instruments were measured for introducing quality certification system. Also major dimensions of instruments were measured too, for analysis on manufacturing precesion.

• 원예과학기술지
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• 제32권4호
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• pp.473-483
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• 2014

In this work, the effects of shade combination, shade height and wind regime on greenhouse climate were quantified. A two-dimensional (2-D) computational fluid dynamics (CFD) model was developed based on an 11-span plastic greenhouse in eastern China for wind almost normal to the greenhouse orientation. The model was first validated with air temperature profiles measured in a compartmentalized greenhouse cultivated with mature lettuce (Lactuca sativa L., 'Yang Shan'). Next, the model was employed to investigate the effect of shade combinations on greenhouse microclimate patterns. Simulations showed similar airflow patterns in the greenhouse under different shade combinations. The temperature pattern was a consequence of convection and radiation transfer and was not significantly influenced by shade combination. The use of shade screens reduced air velocity by $0.02-0.20m{\cdot}s^{-1}$, lowered air temperature by $0.2-0.8^{\circ}C$ and raised the humidity level by 0.9-2.0% in the greenhouse. Moreover, it improved the interior climate homogeneity. The assessment of shade performance revealed that the external shade had good cooling and homogeneity performance and thus can be recommended. Furthermore, the effects of external shade height and wind regime on greenhouse climate parameters showed that external shade screens are suitable for installation within 1 m above roof level. They also demonstrated that, under external shade conditions, greenhouse temperature was reduced relative to unshaded conditions by $1.3^{\circ}C$ under a wind speed of $0.5m{\cdot}s^{-1}$, whereas it was reduced by merely $0.5^{\circ}C$ under a wind speed of $2.0m{\cdot}s^{-1}$. Therefore, external shading is more useful during periods of low wind speed.