• 제목/요약/키워드: MOG

검색결과 461건 처리시간 0.027초

주기성 배경을 위한 개선된 MOG 알고리즘 (Improved MOG Algorithm for Periodic Background)

  • 정용석;오정수
    • 한국정보통신학회논문지
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    • 제17권10호
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    • pp.2419-2424
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    • 2013
  • 기존 MOG (Mixture of Gaussian) 알고리즘에서 배경 결정을 위한 작은 임계치는 주기적인 배경에서 배경 인식 지연을 발생시키고, 큰 임계치는 고정 배경에서 지나가는 객체를 배경으로 인식하게 한다. 본 논문은 적응적인 임계치를 이용한 개선된 MOG 알고리즘을 제안한다. 제안된 알고리즘은 MOG 알고리즘의 주도적인 배경 모델에서 가중치 변화를 단 장기적으로 평가하고, 배경을 정적 배경과 주기성 배경으로 분류하여 그들에 적절한 임계치를 설정한다. 실험결과들은 제안된 알고리즘이 정적 배경에서 기존 알고리즘과 등등한 성능을 유지하면서 주기성 배경에서 배경인식 지연의 최대 프레임수를 137에서 4로 줄여주는 것을 보여주고 있다.

객체 예측을 이용한 고속 MOG 알고리즘 (Fast MOG Algorithm Using Object Prediction)

  • 오정수
    • 한국정보통신학회논문지
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    • 제18권11호
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    • pp.2721-2726
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    • 2014
  • 배경제거를 위해 GMM(Gaussian Mixture Models)을 이용하는 MOG(Model of Gaussian) 알고리즘에서 각 화소들에서 수행될 모델변수 계산과 객체 분류는 방대한 계산을 요구하여 MOG 알고리즘의 활용들에 큰 걸림돌이 되고 있다. 본 논문은 객체 예측을 근간으로 단순한 모델변수 계산과 객체 분류 생략을 부분적으로 수행하는 고속 MOG 알고리즘을 제안한다. 전자는 모델변수에 거의 영향을 주지 않는 화소에서 적용되고, 후자는 객체 예측이 확실히 믿을만한 화소에 적용된다. 동영상을 이용한 기존 알고리즘과 제안된 알고리즘의 비교 실험에서 제안된 알고리즘은 단순 모델변수 계산과 객체 분류 생략을 각각 77.75%와 92.97% 이상을 수행하지만 영상 단위와 이동 객체 단위의 평균 분류 정확도 측면에서 각각 99.98% 이상과 99.36% 이상을 유지시켜 주고 있다.

'접골목'의 생약학적 연구 (Pharmacognostical Studies on the 'Jeob Gol Mog')

  • 권대근;도원임;박종희
    • 생약학회지
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    • 제37권2호통권145호
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    • pp.120-123
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    • 2006
  • Korean folk medicine 'Jeob Gol Mog' has been used to cure nephritis, hypoacidity rheumatis, gastrectasis, and fracture of bone. With regard to the botanical origin of 'Jeob Gol Mog', it has been considered to be Sambucus species of Caprifoliaceae, but there has no pharmacognostical confirmation on it. Morphological and anatomical examination of Sambucus stem show that 'Jeob Gol Mog' was the stem of Sambucus sieboldiana var. miquelii and S. williamsii var. coreana.

민간약 "마가목"의 생약학적 연구 (Parmacognostical Studies on the Korean Folk Medicine "Ma Ga Mog")

  • 박종희;도원임;김미희
    • 생약학회지
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    • 제40권1호
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    • pp.32-34
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    • 2009
  • Korean folk medicine 'Ma Ga Mog' has been used as a remedy for rheumatis, cough and bronchitis in Korea. The botanical origin of the crude drug has been no pharmacognostical confirmation on it. To clarify the botanical origin of 'Ma Ga Mog', the anatomical characteristics of the bark of Sorbus amurensis Koehne, S. commixta Hedl. and S. sambucifolia (Cham. et Schltdl.) Roemer var. psuedo-gracilis C. K. Schneid. were studied. As a result, it was clarified that 'Ma Ga Mog' from Korea was the bark of Sorbus amurensis Koehne and S. commixta Hedl.

Myelin oligodendrocyte glycoprotein antibody-associated disorders: clinical spectrum, diagnostic evaluation, and treatment options

  • Lee, Yun-Jin;Nam, Sang Ook;Ko, Ara;Kong, JuHyun;Byun, Shin Yun
    • Clinical and Experimental Pediatrics
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    • 제64권3호
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    • pp.103-110
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    • 2021
  • Inflammatory or immune-mediated demyelinating central nervous system (CNS) syndromes include a broad spectrum of clinical phenotype and different overlapping diseases. Antibodies against myelin oligodendrocyte glycoprotein (MOG-Ab) have been found in some cases of these demyelinating diseases, particularly in children. MOG-Ab is associated with a wider clinical phenotype not limited to neuromyelitis optica spectrum disorder, with most patients presenting with optic neuritis, acute disseminated encephalomyelitis (ADEM) or ADEM-like encephalitis with brain demyelinating lesions, and/or myelitis. Using specific cell-based assays, MOG-Ab is becoming a potential biomarker of inflammatory demyelinating disorders of the CNS. A humoral immune reaction against MOG was recently found in monophasic diseases and recurrent/multiphasic clinical progression, particularly in pediatric patients. This review summarizes the data regarding MOG-Ab as an impending biological marker for discriminating between these diverse demyelinating CNS diseases and discusses recent developments, clinical applications, and findings regarding the immunopathogenesis of MOG-Ab-associated disorders.

한반도 및 동아시아 지역에서 조종사 보고 자료로 관측된 항공난류의 통계적 분석 (A Statistical Analysis of Aviation Turbulence Observed in Pilot Report (PIREP) over East Asia Including South Korea)

  • 이단비;전혜영
    • 대기
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    • 제25권1호
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    • pp.129-140
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    • 2015
  • The statistical analysis of aviation turbulence occurred over South Korea and East Asia regions is performed, using pilot reports (PIREPs) during December 2002~November 2012 that were provided by the Korea Aviation Meteorological Agency (KAMA) and the National Center for Atmospheric Research (NCAR). In South Korea, the light (LGT)- and moderate or greater (MOG)-level turbulence events occurred most frequently in spring and winter due to strong vertical wind shear below or above jet stream in these seasons. Spatially, the LGT- and MOG-level events occurred mainly along domestic flight routes. The higher occurrences of the LGT- and MOG-level convectively induced turbulence (CIT) events show in spring and summer when convective systems frequently affect the Korean peninsula. The results are generally similar to a previous study on the aviation turbulence over South Korea during 2003~2008, except that MOG-level CIT events occurred more in February, June, and October. Over East Asia region, the LGT- and MOG-level events appeared mostly in summer and spring, respectively, and the highest occurrence is over the southeast region of Japan and Kamchatka peninsula near Russia.

멀티플레이 실시간 전략 시뮬레이션 게임을 위한 동기화 알고리즘들의 성능 평가 (Performance Evaluation of Synchronization Algorithms for Multi-play Real-Time Strategy Simulation Games)

  • 강민석;김경식;오삼권
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2008년도 추계학술발표대회
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    • pp.1280-1283
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    • 2008
  • MOG(Multiplayer Online Game)의 네트워크 성능은 네트워크 부하량과 사용자의 입력에 대한 반응속도로 측정 가능하다. 본 논문은 MOG의 일종인 실시간 전략 시뮬레이션 분야에서 게임 동기화에 이용되는 프레임 잠금(frame lock) 알고리즘과 게임 턴(game turn) 알고리즘을 소개하고 그 성능을 평가한 결과를 제시한다. 또한 동기화 알고리즘들을 쉽게 교체하여 효율적인 평가를 진행할 수 있는 MOG 서버 구조도 제시한다.

H 감비탕(GB-001)이 폐경 전·후 비만 여성의 체중감량에 미치는 영향에 대한 후향적 연구 (The Retrospective Analysis of Effects of H Gambitang (GB-001) on Weight Loss in Pre- and Post-Menopausal Obese Woman)

  • 조홍석;서연호;김고운;조재흥;송미연
    • 한방비만학회지
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    • 제20권1호
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    • pp.20-30
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    • 2020
  • Objectives: The purpose of this study is to verify the effects of H Gambitang (GB-001) on body composition and basal metabolic rate in pre- and post-menopausal obese woman retrospectively. Methods: The study was conducted on 57 middle-aged obese women. They were divided into two groups; pre-menopausal obesity group (Pr-MOG; n=34) and post-menopausal obesity group (Po-MOG; amenorrhea was continued to 14~48 month, n=23) with no significant difference of age, height, body weight and body mass index. All subjects took herbal medicine 3 times a day, for 6 weeks during treatment period. The weight, height, body fat mass, skeletal muscle mass, and basal metabolic rate of all subjects were measured on first visit. The following measurements were repeated after 2 weeks (2nd), 4 weeks (3rd) and 6 weeks (4th) with Inbody 370 (Biospace) equipment to identify changes of body fat mass, skeletal muscle mass, and basal metabolic rate. Results are represented as mean and standard deviation. Results: Po-MOG showed significantly lower decrease rate in weight reduction on 2~6 weeks while significantly higher decrease rate in skeletal muscle reduction on 4~6 weeks. There were no significant differences between two groups in body fat reduction rate and basal metabolic increasing rate. Conclusions: H Gambitang (GB-001) can be used not only in Pr-MOG but in Po-MOG in weight loss although the effect can be lower in Po-MOG. To prevent skeletal muscle mass loss in Po-MOG, following study on adjusting dose and components of H Gambitang (GB-001) thought to be necessary.

SFMOG : 초고속 MOG 기반 배경 제거 알고리즘 (SFMOG : Super Fast MOG Based Background Subtraction Algorithm)

  • 송석빈;김진헌
    • 전기전자학회논문지
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    • 제23권4호
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    • pp.1415-1422
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    • 2019
  • 배경 제거는 동영상에서 변화를 감지하는 컴퓨터 비전 및 이미지 처리의 주요 작업이다. 최상의 성능을 가지는 배경 제거 방법은 일반적인 컴퓨팅 환경에서 실시간으로 사용할 수 없을 만큼 계산량이 많다. 제안하는 알고리즘은 널리 사용되는 MOG 기반의 배경 제거 알고리즘을 이미지 크기 조정 알고리즘으로 개선했다. 제안된 이미지 크기 조정 알고리즘은 계산량을 대폭 감소시키고 지역 정보를 활용하도록 설계해 카메라 잡음에 강력하다. 제안된 알고리즘의 실험결과는 최신 배경 제거 방법에 근접하는 분류능력과 13배 이상 빠른 처리 속도를 가진다.

어머니의 비만여부에 따른 딸의 비만지표, 사회심리적 건강지수, 영양소 섭취 비교 (A Comparative Study Examining the Obesity Indices, Psychological Well-being Index Scores, and Nutrient Intakes of Daughters According to Their Mother's Degree of Obesity)

  • 조강옥;김연수
    • 대한영양사협회학술지
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    • 제14권3호
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    • pp.209-217
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    • 2008
  • The purpose of this study was to understand the effects a mother's degree of obesity has on her daughter's obesity index, psychological well-being index, and nutrient intakes. The daughters, as study subjects, were classified into two groups according to their mother's body mass index (BMI): an obese group [BMI>25 kg/m$^2$, mother obesity group (MOG)] and a normal weight group [BMI<25 kg/m$^2$, mother normal weight group (MNG)]. The daughters in MOG showed significantly higher percent ideal body weight values than the daughters in MNG (p<0.001). MOG and MNG had significantly different psychological well-being index scores in terms of being classified into a highly stressed group (p<0.001), potentially stressed group (p<0.05), and healthy group (p<0.001). Intakes of daily energy, protein, fat, thiamin, riboflavin, niacin, phosphorus, and iron were also significantly different (p<0.001) between MOG and MNG. In particular, the vitamin A and C intakes of the MNG daughters were significantly higher than those of the MOG daughters (p<0.001). Overall, the results showed that a mother's level of obesity was essentially related to her daughter's obesity index, psychological well-being index score, and nutrient intakes. Therefore, it seems necessary for mothers to maintain an ideal body weight to prevent obesity and diet related problems in their daughters.

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