• 국제물리치료학회지
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• 제2권1호
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• pp.229-236
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• 2011

The purpose of this study was to comparatively analyze the active stability of shoulder joints according to the frequency of overhead motions, such as serving and spiking, engaged in by female professional volleyball athletes who play different positions, and to provide the results as the basic data for developing exercise programs to prevent shoulder joint injuries. The subjects of this study were 50 Korean female professional volleyball players and positions were as follows: left and right attackers, centers, setters, and liberos. The external rotation and internal rotation muscle strength and muscle strength ratios of the dominant and non-dominant arms of all subjects were measured using Biodex. The results of this study are as follows: Frist, no significant differences were found in the internal and external rotation muscle strength of the dominant and non-dominant arms between positions. Second, for the shoulder joint muscle strength ratio of the dominant arm, by position, the setter showed significantly greater stability compared to the other positions. Third, for the shoulder joint muscle strength ratio of the non-dominant arm, by position, no significant difference in stability between positions was found. Fourth, it was found that the dominant arm had significantly greater instability of the shoulder joint than the non-dominant arm for attackers and centers, but no significant difference was found for setters and liberos. This study comparatively analyzed the muscle strength ratios of the external/internal rotations and dominant/non-dominant arms, which can determine the stability of the shoulder joints between female professional volleyball playing positions that engage in jumps and spikes using only the dominant hand and positions that do not.

• 한국멀티미디어학회논문지
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• 제9권2호
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• pp.234-243
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• 2006

최근 급속한 HCI(Human-Computer Interaction) 및 감시 기술의 발달로, 얼굴영상을 처리하는 다양한 시스템들에 대한 관심이 높아지고 있다. 그러나 이런 얼굴영상을 처리하는 시스템들에 대한 연구는 주로 얼굴인식이나 얼굴 표정분석과 같은 분야에 집중되었고, 얼굴의 방향성 검출과 같은 분야에는 많은 연구가 수행되지 못하였다. 본 논문은 두 눈썹과 아래 입술로 구성된 얼굴삼각형(Facial Triangle)이라는 특징을 이용하여 얼굴의 방향성을 쉽게 측정하는 방법을 제안한다. 특히, 하나의 이미지만을 사용하여 얼굴의 수평 회전각과 수직 회전각을 구하는 간단한 공식을 소개한다. 수평회전각은 좌 우 얼굴삼각형간의 면적비율을 이용하여 계산하고, 수직회전각은 얼굴삼각형의 밑변과 높이 비율을 이용하여 계산한다. 실험을 통해, 제안하는 방법은 오차범위 ${\pm}1.68^{\circ}$ 내에서 수평회전각을 구할 수 있었고, 수직회전각은 회전각이 증가할수록 오류가 줄어드는 경향을 보여주었다.

• 인간식물환경학회지
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• 제24권6호
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• pp.573-584
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• 2021

Background and objective: This study was conducted with 10 men and women in their 50s-60s to investigate the effect of agro-healing activities on the improvement of mental health. Methods: The experimental group participated in total 8 sessions of agro-healing activities, once a week for 2 hours each, at a care farm in Wanju-gun. Physiological measurements were taken with an electroencephalogram (EEG), Salivettes samples, and blood pressure before and after the activities. Results: As a result of analyzing the changes in brainwaves of the experimental group before and after agro-healing activities, relative slow alpha (RSA), relative fast alpha (RFA), and ratio of alpha to high beta (RAHB), the indices of stability and relaxation, increased after the program with statistical significance. Also, the ratio of SMR to theta (RST) of the attention index increased on the right frontal lobes, temporal lobes, and left occipital lobes, and relative low beta (RLB) increasd on the frontal lobes, temporal lobes, and occipital lobes after the program with statistical significance. The sympathetic nervous system activity, which is a stress index, decreased after the program, whereas the parasympathetic nervous system activity, which is a relaxation index, increased, showing statistical significance (p < .05). As a result of analyzing the changes in blood pressure after the program, systolic blood pressure and diastolic blood pressure decreased from prehypertension to normal blood pressure, showing statistical significance. SThese results indicate that participating in agro-healing activities at a care farm for the 50-60s helps reduce stress and improve stability and relaxation as well as attention. Conclusion: Thus, developing and applying customized agro-healing programs for participants will have a positive effect on brain activity and psychophysiological improvement by relieving tension and stress. However, there are limitations in generalizing the results of this study since most of agro-healing farms have low accessibility that leads to a low level of participants.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제19권1호
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• pp.61-69
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• 1997

The submandibular gland is one of the major salivary glands, salivary diseases frequently occuring site due to its anatomical weakness. This retrospective study evaluated data pertaining to history, sex, operation method, age distribution, diagnosis through the chart, operation record, radiographs, histologic finding of 51 patients operated on for the submandibular gland excision from 1986 to 1995 in our hospital so that we improve on the understand of the salivary gland diseases. The results were as follows ; 1. The chief complaints was mass, swelling mainly. 2. The ratio of affected site was 47.1 : 51 in left : right respectly, both sites was 1 case especially. 3. The ratio of men to women was 56.9 : 43.1 4. The operation performed all through the extraoral approach. 5. The sialolith presented at 24 cases. 6. The most patients had a two weeks duration period. 7. The age distribution was the third decade(29.4%), the second decade(27.5%) in order. 8. The symptoms accompanied the chief complaints was pain(37.3%), mass(17.6%), swelling(13.7%), trismus(13.7%) in order. 9. The diagnosis was sialadenitis with stone(S.W.S.) (45.1%), sialadenitis without stone(S.W.O.S.) (17.6%), pleomorphic adenoma(P.A.) (15.7%), abscess(Abs) (5.9%), tuberculosis(Tbc) (5.9%) in drder.

• 한국운동역학회지
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• 제22권1호
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• pp.9-16
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• 2012

The purpose of this study was to compare and analyze muscle function and EMG of the trunk and the lower extremity in short and long distance athletes and in order to determine difference in peak torque per unit weight, muscle power per unit weight, endurance ratio, and %MVIC classified by muscle. For that purpose, isokinetic muscle function tests for waist, knee, and ankle joints and EMG measurements for the trunk and the lower extremity muscle with running motion were conducted for 7 short and long distance high school athletes respectively. The study over muscle function of waist, knee, and ankle joints indicates that peak torque per unit weight of short distance athletes is higher than that of long distance athletes in extension and flexion of waist joint, plantar flexion of right ankle joint, and dorsi flexion of left ankle joint. In case of the muscle power per unit weight of short distance athletes is also higher than long distance athletes in waist, knee, and ankle joints. No difference in endurance ratio of waist, knee, and ankle joints between the two groups was founded. The results of the test over EMG of the trunk and the lower extremity show that %MVIC of erector spinae, rectus femoris, vastus medialis, vastus lateralis, and tibialis anterior is higher than that of long distance athletes in support phase. The above results proved to be the same in flight phase except for %MVIC of medial gastrocnemius. In other words, %MVIC of medial gastrocnemius for short distance athletes turned out to be higher than that of long distance athletes in flight phase.

• 한국치위생학회지
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• 제14권4호
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• pp.593-599
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• 2014

Objectives : Latex gloves hygiene is the most effective method to prevent infection of microorganisms and to reduce the incidence of cross infections. The aim of this study was to compare the bacteria reduction ratio of cleansing with water, liquid soap and alcohol gauze. Methods : The left side glove was the control group and the right side was the experimental group. The experimental group washed hand with water, soap, and alcohol gauze. The hand plate was inoculated by the hand and inoculated for 24 hours in $35^{\circ}C$. Results : Washing with water showed that CFU of control group was 1116.9 and that of experimental group was 302.8. Hand washing by water reduced 74.3% of bacteria. Liquid soap revealed that CFU of control group was 619.9 and that of experimental group was 8.3. Hand washing by liquid soap reduced 97.5% of bacteria. Alcohol gauze included 875.2 CFU in control group and 5.8 CFU in experimental group. Washing by alcohol gauze reduced 99.5% of bacteria. Conclusions : Based on the results, the most effective latex gloves cleansing method was recommended as the standardized hand washing with the liquid hand soap and alcohol gauze. The results can be used to improve training strategies for enhancing glove hygiene practice in dental clinic.

• 문화기술의 융합
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• 제5권3호
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• pp.263-269
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• 2019

본 연구에서는 붐 길이를 측정할 수 있는 센서, 붐 및 로더의 좌우측의 경사를 측정할 수 있는 각도센서 그리고 리프팅 시 무게를 측정할 수 있는 로드셀 등의 여러 센서를 장착한 다목적 로더의 특성과 운행에 관련된 데이터 값을 디스플레이하는 시스템을 구현하였다. 시스템의 구성은 다음 각종 센서로부터 값을 읽어와 이를 차량제어기에 보내고 제어기에서 계산한 전복률 결과와 기타 중요한 정보를 디스플레이 장치에 CANOpen 프로토콜을 이용하여 전달하게 하였다. 또한 전복률 계산에 있어서는 다목적 로더의 구조가 중장비에 속하는 크레인의 구조와 비슷하여 크레인 전복률 계산방식을 사용하였으며 좌우 경사도에 따른 전복 위험성은 실험을 통하여 전복가능성이 있는 좌우 경사각을 추출하였다. 본 연구를 통하여 중장비 차량의 상태를 관찰하며 전복 등의 비상 상황을 디스플레이 장치를 통해 사전 인지할 수 있게 하였다.

• Advances in pediatric surgery
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• 제17권2호
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• pp.154-161
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• 2011

Tracheoesophageal fistula without esophageal atresia (H-type TEF) is a congenital anomaly that is characterized by a fistula between the posterior wall of the trachea and the anterior wall of the esophagus, not accompanied by esophageal atresia. The purpose of this study is to investigate the clinical characteristics, diagnostic time, the side of cervical approach and short term result after surgery by searching medical records of patients treated for H-type TEF. The search was done at University of Ulsan, Department of Pediatric Surgery of Asan Medical Center, and the total number of patients from May 1989 to December 2010 was 9 with M:F ratio of 1:2. The median gestational age was $39^{+6}$ ($32^{+6}{\sim}41^{+0}$) wks. Seven out of nine patients were born at term and the other two were born premature. The clinical presentation was aspiration pneumonia, difficulty in feeding, chronic cough, vomiting, abdominal distension and growth retardation. The symptoms presented right after birth. The diagnosis was made with esophagography and the median time of diagnosis was 52 days of life. The majority of surgical corrections were performed within two weeks of diagnosis (median; 15d, range; 1d - 6m). Six patients had associated anomalies, and cardiac anomalies were most common. The cervical approach was utilized in all cases (right 2, left 7). Transient vocal cord palsy and minor esophageal leakage complicated two cases. Although the diagnosis of H-type TEF was difficult and often delayed, we had a good short term result. The left cervical approach was preferred.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제11권1호
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• pp.50-62
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• 1989

저자는 1982년 1월부터 1987년 12월까지 대구시내 주의료기관인 5개 종합병원에 입원가료한 바 있는 하악골 골절환자 677명을 대상으로 임상적 연구를 시행한 바 다음과 같은 결과를 얻었다. 발생빈도에 있어서 연도별로는 약간의 증가추세에 있었고, 월별로는 5월과 9월에 호발하였고 지역별로는 대구시(55.7%)가 많았으며 대도시 (63.0%)에서 다소 높았다. 연령별 및 성별에서 20대(38.3%)에서 가장 호발하였으며 10대(18.5%), 30대 (18.0%)의 순으로 나타났으며 남녀비는 4.64 : 1로서 남자에게서 호발하였다. 원인별로 볼때 구타(31.5%), 교통사고 (29.5%)와 추락(15.2%), 전도(15.1%)로 많은 비중을 나타내었으며,별로 보면 20-40시 사이에 구타가 가장 많았다. 골절부위별로는 하악골 단독골절이 95.5%였으며 중안면골 골절이 동반된 경우가 4.5%였으며 골절 부위 수는 총 1,033개로서 1인당 평균 1.53개였으며 정중부(39.8%), 우각부(25.2%), 과두부(22.7%)의 순이었으며 정중부를 제외한 좌우측 비교에서 좌측이 364례로서 우측의 257례보다 많았다. 수상후 24시간이내에 전체의 62.9%가 내원하였으며, 1차 진료기관을 거친 경우가 42.4%였으며 유형별로는 일반의원(44.6%), 일반병원(27.9%) 및 치과의원(25.4%)의 순으로 나타났다. 처치내용별로는 관혈적정복수술이 전체의 55.0%를 차지하였고 37.2%는 비관혈적 정복수술을 받았으며, 소아에서는 주로 비관혈적 정복수술이 50.6%를 차지하였다.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.37-44
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• 2016

이 연구는 고령화 사회를 대비하여 노인 체력 향상 프로그램 설계 및 관련 정책을 수립하기 위한 기초 자료를 수집하기 위한 목적으로 실시되었다. 이를 위해 2013년, 서울 동대문구 소재 노인종합복지관에 등록 중인 노인 52명과 동대문구 소재 대학교 학부 과정에 재학 중인 학생 46명을 연구 대상으로 하여 하지의 등속성 근기능과 발목 관절가동범위, 유연성, 균형성 및 신체조성 등을 측정하였으며, Biodex system IV, Biodex stabilizer system, CNP-5403, Inbody 3.0이 사용되었다. 남자 노인 집단의 평균 연령은 77.13세였으며, 45.85kg의 근육량을 가지고 있었고, 체전굴은 2.97cm로 유연성이 아주 결여되어 있었다. 좌측발의 균형 능력이 우측보다 좋지 않았으며, 발바닥쪽굽힘의 관절 가동 범위는 35도 내외로 정상 범위에서 벗어났다. 전반적인 무릎 폄근과 굽힘근의 근력은 남자 대학생의 50% 정도 수준이었으며, 뒤넙다리근의 결손율이 18.55%로 균형이 깨어져 있었다. 발목 가쪽번짐-안쪽번짐 결손율 또한 23.08%, 19.19%로 나타났다. 여자 노인 집단의 평균 연령은 75.46세로 근육량은 35.68kg이었으며, 체전굴은 11.69cm로 여자 대학생 집단과 비슷하게 좋은 편이었다. 무릎의 동측 근력비가 좌우 모두 50% 미만이었고, 결손율 또한 폄 14.32%, 굽힘 19.73%로 좌우 근력 균형이 좋지 않았다. 발목의 발등굽힘력은 여자 대학생 집단의 62%(좌), 73%(우) 정도였다. 발등굽힘-발바닥쪽굽힘의 결손율이 각각 25.05%, 26.86%, 가쪽번짐-안쪽번짐 결손율이 19.97%, 21.09%로 나타나 발목의 좌 우 근력 불균형이 상당히 심한 것으로 나타났다. 상기 연구 결과들이 실질적인 노인 체력 향상 훈련 프로그램을 제공하고 관련 정책을 수립하는 데 도움이 되기를 바란다.