장비에 따른 3차원 공간정보 품질향상 요인추출 및 집단 간 선호도에 관한 연구

오민균,배상태,김태우,이정일,Oh, Min-Kyun,Bea, Sang-Tea,Kim, Tea-Woo,Lee, Jung-Il 한국국토정보공사 공간정보연구원 2016 지적과 국토정보 Vol.46 No.1

This study analyzes the key factors of 3D spatial information in accordance with the establishment of aerial and ground equipment fusion, and the quality improvement solutions are delivered from the preference survey. Furthermore, it investigates the factors affecting the quality of the individual technical elements through the establishment of three-dimensional spatial information. It is for identifying the priority which needs to be improved, and this data will be used to identify the evaluation for factors, the technology development and its application. For this purpose, the presence or absence of equality is judged by the quantitative techniques through the preference survey of the gap between the experts of spatial information and survey and the general users who have experiences on 3D spatial information.

공간정보를 활용한 탄소흡수량 자동 산정시스템 개발

오민균(Min-Kyun Oh),권오섭(Oh-Sub Kwon),최병길(Byoung-Gil Choi),나영우(Young-Woo Na) 대한공간정보학회 2013 한국지형공간정보학회 학술대회 Vol.2013 No.5

무인 측량선을 활용한 수중공간정보 획득에 관한 연구

오민균(Min-kyun Oh),정진우(Jin-Woo Jung),나영우(Young-Woo Na),최병길(Byoung-Gil Choi) 대한공간정보학회 2014 한국지형공간정보학회 학술대회 Vol.2014 No.11

노인 뇌졸중 환자에서 수면의 질과 연관된 임상 특징들

오민균(Min Kyun Oh),이철순(Cheol Soon Lee),박철수(Chul Soo Park),김봉조(Bong Jo Kim),차보석(Bo Seok Cha),김선미(Sun Mi Kim),이소진(So Jin Lee),신희석(Hee Suk Shin),김아람(A Ram Kim) 대한노인정신의학회 2011 노인정신의학 Vol.15 No.1

Objectives:Although sleep problem is a common complaint in stroke survivors, there is paucity of studies on quality of sleep in old patients with stroke. The purpose of this study was to investigate the clinical characteristics associated with quality of sleep in old patients with stroke. Methods:A comprehensive clinical and psychiatric assessments was performed in 30 patients who were admitted in rehabilitation department. Quality of sleep was evaluated with the Pittsburgh sleep quality index (PSQI). Other rating scales such as Modified Barthel Index, Korean mini mental state examination, Hamilton rating scale for anxiety, and Hamilton rating scale for depression were also performed to evaluate the clinical characteristics. Results:Thirteen patients (43%) were ‘poor sleeper’ defined as a global PSQI score 〉5. In the partial correlation test, poor sleeper group were significantly associated with anxiety (r=0.69, p〈0.01) and depression (r=0.76, p〈0.01). In the multivariate logistic regression analysis, depression symptoms (OR=1.51, p=0.01) were only significant predictor of ‘poor sleep’ compared with other factors including age, sex, stroke type, stoke location, stroke site, past medical history, anxiety, and cognitive function. Conclusion:The results may suggest that it is important to assess depression when old patients with stroke show decreased quality of sleep. Further following studies will be needed for finding relation with other clinical factors.

경사면적 산출을 위한 지상라이다 데이터와 지적성과의 실험적 비교 분석

오민균(MinKyun Oh),최병길(ByungGil Choi),나영우(YoungWoo Na) 대한공간정보학회 2018 한국지형공간정보학회 학술대회 Vol.2018 No.5

항공 멀티센서 자료의 융합방법을 이용한 해안지역에서의 토지피복분류 정확도 분석에 관한 연구

오민균(Oh, Min Kyun),권오섭(Kwon, Oh Seob),최병길(Choi, Byung Gil),나영우(Na, Young Woo) 대한공간정보학회 2020 대한공간정보학회지 Vol.28 No.1

본 연구의 목적은 항공 멀티센서 자료의 융합 방법을 이용하여 해안지역의 토지피복분류를 위한 정확도를 분석하는데 있다. 토지피복분류의 정확도와 융합 변수 간 상관관계를 고려하여 하이퍼스펙트럴 자료, 멀티스펙트럴 자료 및 항공레이저 자료에 대한 최적 융합 모형을 적용하였다. 융합 방법과 변수 조합을 통해 최적 융합 모형을 적용하여 융합 전후의 분류 정확도를 비교 분석한 결과, 수치적 정확도와 시각적 정확도가 모두 향상되었으며, 공간해상도가 높은 자료를 기준으로 융합하는 경우보다 분광 정보가 많은 자료를 기준으로 융합하는 경우가 수치적 정확도를 좀 더 향상시킬 수 있음을 알 수 있었다. 토지피복분류의 항목별 수치적 정확도는 융합 방법별로 모두 유사한 경향이 나타남을 알 수 있었다. 융합 결과 식생관련 분류 항목들의 경우 수치적 분류 정확도가 다소 감소하였으나 참조영상과 현지조사를 통해 시각적 정확도를 분석한 결과 분류항목 모두 실제의 피복현황에 보다 정확히 일치하는 것을 알 수 있었다. The purpose of this study is to analyze the accuracy of land cover classification using the fusion method of aerial multi-sensor data in coastal area. In consideration of the correlation between the accuracy of land cover classification and the fusion parameters, the optimal fusion model for hyperspectral data, multispectral data and airborne laser data was applied. As a result of comparing the classification accuracy before and after fusion by applying the optimal fusion model through the fusion method and the variable combination, both the numerical accuracy and the visual accuracy are improved. It can be seen that the convergence based on many data can improve the numerical accuracy. The numerical accuracy of each item of land cover classification tended to be similar for each convergence method. As a result of the fusion, the numerical classification accuracy decreased slightly, but the visual accuracy was analyzed through the reference image and the field survey.

수막강 내 메토트렉세이트 주입 후 발생한 하지마비 -증례보고-

이창한,오민균,조진홍,이은신,신희석 대한재활의학회 2006 Annals of Rehabilitation Medicine Vol.30 No.2

혼합 용매에 따른 보툴리눔 A형 독소의 역가 차이

서구일,오민균,은희철,백남종 대한근전도전기진단의학회 2008 대한근전도 전기진단의학회지 Vol.10 No.2

Objectives: The purpose of this study is to compare the potency of botulinum toxin type A (BTA) reconstituted with preserved saline to that with nonpreserved saline in humans. Methods: We conducted double blinded controlled study of injecting BTA reconstituted with normal saline to one side of extensor digitorum brevis (EDB) and BTA reconstituted with preserved saline to the other side of EDB in 11 healthy volunteers. Amplitude of the EDB compound muscle action potentials (CMAP) was compared between both sides before and 1 week, 4 weeks, 8 weeks and 12 weeks after the injection. Results: At 1 week after the injection, there was no difference in potency between two sides. However, there was a significant potency difference at 4 weeks, 8 weeks and 12 weeks after the injection, showing reduced potency of BTA reconstituted with preserved saline compared to BTA reconstituted with normal saline. Conclusion: Potency of the BTA might be reduced when it is reconstituted with preserved saline as compared to normal saline, therefore reconstituting BTA with preserved saline should be reconsidered.

한국 일부 지역 노인들의 체력 및 신체 활동이 삶의 질에 미치는 영향

김경은,박원범,오민균,강은경,임종엽,양은주,임재영,백남종 대한노인병학회 2010 Annals of geriatric medicine and research Vol.14 No.4

Background: To investigate the physical function of elderly people in Korea using quantitative and objective tools and to assess the impact of declined physical function on their quality of life. Methods: The Korean Longitudinal Study on Health and Aging was designed as a population-based prospective cohort study on the health and aging of the elderly people in Korea aged 65 years and older. Within one city’s central metropolitan area, 1,000 subjects including a simple random sample and an oldest-old subpopulation participated in a baseline study for one year. We evaluated the isokinetic peak torque of the knee extensors and flexors, grip force, and Short Physical Performance Battery(SPPB) and surveyed their daily physical activities and quality of life using the 36-Item Short Form Health Survey(SF-36). Results: Overall, 676 subjects completed the evaluations of physical function and activity. The isokinetic torque of the knee extensors and flexors declined with age in both men and women. The women in the old-old(75-84 years) group showed lower SPPB and physical activity than women in the young-old(65-74 years) group, but these measures were maintained till age 85 in the men. SPPB and physical activity were significantly associated with the physical component scale (PCS) of the SF-36 in both men and women, while isokinetic torque was associated with PCS in women only. Conclusion: Physical performance and activity declined differently in Korean elderly men and women. Both these measures showed to be the main factors associated with quality of life.

한국 노인의 낙상 실태와 위험요인: 일부 지역의 인구비례 할당 표본 조사

임재영,박원범,오민균,강은경,백남종 대한노인병학회 2010 Annals of geriatric medicine and research Vol.14 No.1

Background: To investigate the occurrence of falls and their consequences in a representative population and to identify risk factors of falls in the elderly. Methods: The study participants were community-dwelling elderly people aged 65 years or old as a population based sample of one large city. A total of 828 people 65 years or older participated in this study. They were interviewed over the telephone by a trained interviewer using a structured questionnaire to obtain a fall history and details of their most recent fall including date, time, place, circumstances, and associated injury. As for risk factors for falls, we asked about living arran- gement(with family or alone), alcohol intake, exercise, visual and hearing impairments, memory and sensory problems, lower limb weakness, and arthritis symptoms. Fear of falling and fear-related activity restriction were also evaluated. Results: The incidence of falls during the last one year was 13.0%. Women experienced falls more frequently. Falls occurred mainly in spring and summer and from 10 AM to 3 PM. Common causes of falls were slipping and tripping. 14.9% of those who fell suffered consequent fractures. Being female was a significant risk factor for falls; and females tended to get injured more severely following a fall. During the recent one year, decreased proprioception in the lower extremity was a significant risk factor for falls. Those with histories of falls, and especially women, tended to limit their activities due to the fear of falling. Conclusion: Overall, it appears that elderly women are more greatly affected by falls at several levels. Female partici- pants fell more frequently and suffered more severe consequences. Fall-related injuries and risk factors for falls disproportionately affected women. And, being female and any amount of decreased sensation in the feet were significant risk factors for falls.