• 한국정보통신학회논문지
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• 제25권2호
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• pp.202-207
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• 2021

영상 처리에서 중요한 연구 분야 중 하나는 잡음 제거이다. 영상의 잡음 제거는 비정상 시퀀스 및 다양한 유형의 잡음에 의한 손상과 같은 여러 이유로 인해 해결하기 어려운 문제이기 때문이다. 인간의 시각적 인식은 에지 정보에 크게 의존한다. 따라서 잡음 제거 시 반드시 에지 정보를 보존해야 한다. 노이즈를 제거하기 위해 일반적으로 정방형 메디안필터를 사용한다. 이 방법은 수학적 단순성을 가지고 있지만 에지 영역을 흐리게 한다는 단점이 있다. 본 논문에서는 영상 내에 존재하는 잡음을 효과적으로 제거하기 위해서 에지 검출 알고리즘을 갖는 가중 팔각형 메디안 필터를 사용한 새로운 메디안 필터 윈도우를 제안하였다. 이 방법은 에지를 검출하기 위해 움직이는 가중 팔각형 창을 사용하였다. 그리고 결과를 일반 메디안 필터, 격자형 메디안 필터 그리고 본 논문에서 제안한 가중 팔각형 메디안 필터의 결과와 비교하였다. 실험 결과, 에지 검출 알고리즘을 갖는 가중 팔각형 메디안 필터를 이용한 영상 복원이 일반 메디안 필터나 격자형 메디안 필터를 사용한 결과보다 좋은 성능을 가짐을 확인하였다.

• Journal of Trauma and Injury
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• 제34권2호
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• pp.87-97
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• 2021

Purpose: This study examined emergency medical service (EMS) transportation patterns for adult trauma patients before and after establishing a level 1 regional trauma center (RTC) and to evaluate the transportation approach after prehospital severity screening. Methods: This was a retrospective observational study of trauma patients aged ≥18 years admitted via EMS to the emergency department or a level 1 RTC, 1 year before to 3 years after RTC establishment. Patients with an Injury Severity Score (ISS) in the patient registration system were selected. Analyses were performed to determine transportation pattern changes by comparing patients pre- and post-RTC establishment and by yearly comparisons over the 4-year study period using the Mann-Whitney U test and chi-square test. Results: Overall, 3,587 patients were included. The mean ISS was higher in the post-RTC group (n=2,693; 10.63±8.90, median 9.00) than in the pre-RTC group (n=894; 9.44±8.20, median 8.00; p<0.001). The mean transportation distance (9.84±13.71, median 5.80 vs. 13.12±16.15 km, median 6.00; p<0.001) was longer in the post-RTC group than in the pre-RTC group. Furthermore, proportionally fewer patients were transported from an area in the same city as the RTC after establishment (86.1% vs. 78.3%; p<0.001). Yearly comparisons revealed a gradually increasing trend in the hospital death rate (ptrend=0.031). Conclusions: After establishing a level 1 RTC, the EMS transportation of severe trauma patients increased gradually along with the long-distance transportation of minor trauma patients. Therefore, improved prehospital EMS trauma severity assessments and level 1 RTC involvement in patient classification in the prehospital phase are necessary.

• 대한물리치료과학회지
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• 제3권4호
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• pp.139-145
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• 1996

This study was carried out to investigate the scapular rhythm of normal persons. 16 persons was no disease, injury and after-effect in period for July 1, 1996 to July 14, 1996. The statistical measures were performed by SPSS/PC t-test for classification. The result of this study were as follow : 1. There was a significant difference between the body median line and scapular superior angle from the mean distance in 83.4 mm of male and 86.0 mm of female to shoulder neutral position(p<0.05). 2. The mean distance of body median line between scapular inferior angle was 97.9 mm of male and 92.0 mm of female to shoulder neutral position. 3. There was a significant difference between the body median line and scapular inferior angle from the mean distance with male and female to shoulder abduction $90^{\circ}$ position(p<0.05). 4. The mean angle of body median line between scapular angle was $6.4^{\circ}$ of male and $4.4^{\circ}$ of female with shoulder neutral position. 5. The mean ratio of scapular rhythm was 5.6 : 1 in shoulder abduction of $90^{\circ}$ and 5.1 : 1 in shoulder abduction of 180.

• Clinical and Experimental Pediatrics
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• 제53권8호
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• pp.790-794
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• 2010

Purpose: The purpose of this study was to test the efficacy of treating the pain among newborn infants associated with a medical procedure with sucrose with regard to overall physiological and behavioral stability. Methods: 103 newborn infants were enrolled in this study. The control group (n=63) did not receive any treatment. The experimental group (n=40) received 2 mL of 24% sucrose solution two minutes before a routine heel stick. The pain was assessed by measurements of physiological changes [e.g. pulse rate, oxygen saturation, salivary cortisol (hydrocortisone)] and behavioral changes [e.g. crying time, and the neonatal infant pain scale (NIPS) for neonates]. Results: There were no differences among the groups with respect to physiological changes associated with the pain from the procedure. However, there were significant group differences in behavioral changes to the pain. In the control group, the median crying time was 13 seconds, while in the experimental group, the median crying time was 3.5 seconds ($P$=.000). In the control group the median NIPS score was 4, while in the experimental group the median NIPS score was 2 ($P$=.000). Conclusions: These findings suggest that sucrose can be an effective method for the management of stress responses in infants with regard to behavior. However, this treatment had no significant physiological effects.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제4권2호
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• pp.71-76
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• 2015

유사도 조인 처리에서 일반적인 기법은 생성-검증 구조를 사용하여, 첫 번째 생성 단계는 레코드들의 집합에서 후보 쌍들의 집합을 생성하고 두 번째 단계는 실제 유사도를 계산하여 각 후보 쌍을 검증한다. 검증 단계에서 후보 쌍들의 개수를 줄이기 위하여 본 논문에서는 각 후보 쌍의 한 레코드의 중앙값을 다른 레코드와 공통되는 토큰들의 개수가 적절하게 가질 수 있는지를 검사하는 필터로 사용한다. 중앙값 필터를 가지는 유사도 조인 알고리즘을 제안하고 제안된 알고리즘이 실세계 데이터집합에서 여러 실험을 통해 중앙값 필터를 갖지 않는 최근의 알고리즘들에 비해 실행시간에서 더 좋은 성능을 가진다는 것을 보여준다.

• 대한가정학회지
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• 제38권4호
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• pp.21-32
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• 2000

The purpose of this study was to investigate the relational between the self of differentiation of adult children's, the healthy family-of-origin, and the solidarity with aged mother. Questionnare survey method was used in this research. The sample was taken from 356 adult children in Chonnam and Sunchon city. The collected data were analyzed by using frequency, percentage, mean, standard deviation, t-test, correlation and stepwise regression analysis. The findings of this study are as follows ; 1) The total points of the self of differentiation of adults children's was 108.7, which was higher than the median 90. And the total points of the healthy family-origin was 107(median:84). And the total points of the attachment with aged mother was 30, which was higher than the median 24. And the total points of the conflict with aged mother was 22.8, which was lower than the median 27. 2) The variables significantly affecting the attachment with aged mother were the healthy family-of-origin, the self of differentiation, educational level and $R^2$of such variable are 30%. The variable significantly affecting the conflict with aged mother were the healthy family-of-origin, the self of differentiation and $R^2$ of such variables are 29%.

• 보건행정학회지
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• 제32권1호
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• pp.113-121
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• 2022

This study aims to compare the healthcare status of South Korea and other member of the Organization for Economic Cooperation and Development (OECD) using the OECD health statistics 2021. We used the position value for relative comparison (PARC) index to measure the five elements of the healthcare system, demand, supply, accessibility, quality, and cost. For the statistical analysis, Mann-Kendall test was performed to examine the trend of the PARC values from 2000 to the most recent year. The results showed that supply, demand, accessibility, and quality were above median than the OECD median and the cost was below median. In sectors such as primary care, health employment and mental health care were below median average. With these result, necessary steps for a sustainable healthcare should be taken into effort by policy makers.

• 대한토목학회논문집
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• 제29권4D호
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• pp.499-507
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• 2009

도로중앙분리대는 4차선이상의 도로에서 차도방향별로 분리하는 도로안전구조물로서, 도로교통사고와 같은 긴급 상황시 운전자 및 승객의 생명과 안전을 보호 하고, 교통장애를 최소화하기 위하여, 첨단 유비쿼터스 IT기술을 융합한 유비쿼터스 도로 중앙분리대 시스템을 제안하였다. 본 논문에서는 지능형 도로중앙분리대의 교통사고 상황인지를 위한 센서노드필드를 구성하고, 자유공간 송, 수신테스트 및 실외시험을 통해 미들웨어를 개발한 결과, 무선통신을 통해 언제, 어디서나 교통사고 발생을 24시간 실시간 인지하여 병원 및 경찰 같은 유관기관 및 담당자에게 신속하게 통보, 대처하는 것을 검증하였다.

• 한국도로학회논문집
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• 제14권4호
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• pp.113-124
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• 2012

PURPOSES : In This study two different concrete barrier systems have been proposed to be established at the small vehicle driveway. One is for median barrier, and the other is for roadside barrier. METHODS : In order to determine the suitable shape of barrier, the impact parameters including vehicle weight, impact angle, impact velocity and impact level have been analyzed. The real crash test has been carried out with 0.9 ton and 2.5 ton vehicles, respectively by using the 2m segment type concrete barriers connected by steel plates that are totally 40m barrier systems. RESULTS : The numerical results obtained by LS/DYNA-3D software are compared with real crash tests from the viewpoints of vehicle stability, vehicle trajectory, occupant risk, etc. CONCLUSIONS : From the above results, the dynamic performance of proposed barrier systems satisfies the specification of Korean Code for roadside safety structures.

• Journal of Korean Neurosurgical Society
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• 제55권5호
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• pp.296-299
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• 2014

We report a rare case of pronator teres syndrome in a young female patient. She reported that her right hand grip had weakened and development of tingling sensation in the first-third fingers two months previous. Thenar muscle atrophy was prominent, and hypoesthesia was also examined on median nerve territory. The pronation test and Tinel sign on the proximal forearm were positive. Severe pinch grip power weakness and production of a weak "OK" sign were also noted. Routine electromyography and nerve conduction velocity showed incomplete median neuropathy above the elbow level with severe axonal loss. Surgical treatment was performed because spontaneous recovery was not seen one month later.