Macro Block 기반의 효과적인 GOP구조 선택 알고리즘

전민정(Jeon Min-Jeong),문영득(Moon Young-Deuk),정희태(Chung Hee-Tae) 한국콘텐츠학회 2005 한국콘텐츠학회 종합학술대회 논문집 Vol.3 No.1

GOP 구조를 제어하여 양질의 영상을 제공하기 위한 방법들이 많이 제안되어 있다. 그러나 기존의 알고리즘들은 GOP 구조를 결정하기 위해 일정량의 영상을 사전 검토하여야 하는 과정을 거쳐야 하므로 계산 량이 증가하게 되어 대용량 프레임 메모리가 필요하고 시간적으로도 지연되므로 실시간 적응에는 적합하지 못하다. 본 논문에서는 매크로 블록을 기반으로 한 실시간 적응적인 알고리즘을 제안한다. 제안한 매크로 블록 기반의 GOP 구조를 이용하여 효과적인 영상처리 결과를 얻었다. There are many suggestion of methods which get good quality images by controling the GOP structure. But the existing algorithm should have not good to deal the real time adaptive processing determine the GOP structure because which check the fixed quantity of image in advance and require high capacity of frame memories and have delay time by increasing calculation quantity. This paper propose the algorithm which adapt the real time by the basic of macro block. We show the good simulation results using the proposed GOP structure based on macro block.

효과적인 GOP구조 선택을 위한 동적 제어 알고리즘

전민정(Jeon Min-Jeong),문영득(Moon Young-Deuk),정희태(Chung Hee-Tae) 한국정보기술학회 2005 Proceedings of KIIT Conference Vol.2005 No.-

멀티미디어 시스템 내에서 영상과 비디오 정보의 급격한 증가로 인해 효율적인 전송, 저장, 처리하기 위한 연구가 계속되어 오고 있다. 그러나 전형적인 MPEG 알고리즘들은 압축을 하기 위해 일정량의 영상을 사전 검사를 하는 문제점으로 인해 시간지연과 계산 량의 증가를 야기한다. 본 논문에서는 온라인상에서 적응적 GOP 구조 선택 알고리즘을 제안한다. 실험결과에서 고정 GOP 구조보다 보다 작은 예측오차를 확인 할 수 있었다. Because of rapid growth of image and video information in multimedia system, the effective transmission, storing and processing research is continued. But the typical l\1PEG algorithms have the problems of pre-investigation of some images to compress, which caused the increment of computation and time delay. In this paper, we proposed the adaptive GOP structure selection algorithms which operate in real time. The simulation result shows the proposed algorithms have less predictive error than that of the fixed GOP structure.

전업주부의 양육 부담과 우울감이 수면의 질에 미치는 영향 : 가계수입의 조절된 매개효과 검증

전민정(Min-Jeong Jeon),정나래(Na-Rae Jeong),황태영(Tae-Young Hwang) 대한수면의학회 2021 수면·정신생리 Vol.28 No.1

Objectives: This study investigated sleep quality in female full-time homemakers and evaluated the relationship of sleep disturbance with psychological and socio-environmental factors. Methods: This cross-sectional study adopted a structured survey and sequential recruitment method for randomized participation of community-dwelling full-time female homemakers. Sleep quality and mental health were measured using the Korean version of the Pittsburgh Sleep Quality Index (K-PSQI), Korean version of the Beck Depression Inventory-II (K-BDI-II), Korean version of the Beck Anxiety Inventory (K-BAI), and Korean version of the Beck Hopelessness Scale (K-BHS). The willingness- to-pay (WTP) method was selected to measure the self-evaluated monetary value of household service work. The relationship among the main relevant factors was statistically analyzed through a mediation model. Results: A total of 166 participants were analyzed and classified having poor versus good sleep quality (poor : 24.1%, n = 40 ; good : 75.9%, n = 126 ; cut-off point = 9 on the K-PSQI). Significant between-group differences were observed in mental health status (K-BDI-II, p < 0.001 ; K-BAI, p < 0.001 ; K-BHS, p = 0.003). The moderated mediation model was verified, indicating that depression may mediate the association between nurturing burden and sleep disturbance. The path from nurturing burden to depression may be moderated by average monthly household income. Conclusion: A relatively high portion of full-time female homemakers may suffer from sleep disturbance and interactions between psychological and socio-environmental factors might determine sleep quality, suggesting the need for public health policies targeting improvement of sleep quality and mental health among full-time homemakers.

다층자료의 구조적 특성에 따른 다층모형의 모수추정 비교 - 2-level HLM, 3-level HLM, CMM 방법의 비교 -

전민정(Min Jeong Jeon),강상진(Sang-Jin Kang) 한국교육평가학회 2005 교육평가연구 Vol.18 No.2

본 연구는 다층 모형을 활용하는 연구자들이 흔히 2수준 다층모형의 사용에 편중되어 있다는 점에 근간하여, 수집된 자료의 구조적 특성에 따라 어떠한 다층모형을 활용하는 것이 보다 적절한 분석 방법이 될 것인지 파악하는 것을 목적으로 하였다. 이를 위해 2수준 다층모형과 3수준 다층모형, 이원 다층모형의 모수 추정방식, 제공되는 정보 유형 및 유사점과 차이점을 이론적 차원에서 제시하였으며, 경험적 자료 분석 결과를 통해 세 모형의 모수 추정치의 차이를 비교·논의하였다. The purpose of this study was to provide the theoretical relationship of parameter estimation between 2-level HLM, 3-level HLM, and crossed multilevel model(CMM) and to show empirical illustrations of the estimates when the three models analyzed the same data. The three models were compared under three conditions of model specification. The results of the analyses were as below. First, the three models decomposed variance components differently when the base models were compared. CMM decomposed the total variance into four components, while 2-level HLM and 3-level HLM decomposed the variance into only two and three components respectively. Second, the three models yielded nearly equal parameter estimates of the fixed effects when the predictors are specified at macro-level only. Third, 2-level HLM showed larger parameter estimates for fixed effects, and more shrunken standard errors of the estimates than CMM when the predictors were specified at both micro- and macro-level in the models. However, the results of parameter estimation of 3-HLM and CMM were almost identical.

벤조피렌과 수은에 대한 기수산 물벼룩 Diaphanosoma celebensis의 복합 독성 영향

유제원,조하영,전민정,이영미,Yoo, Je-Won,Cho, Hayoung,Jeong, Jeon Min,Lee, Young-Mi 한국해양생명과학회 2019 한국해양생명과학회지 Vol.4 No.2

다환방향족탄화수소류(PAHs)는 해양 환경에 오랜 기간 잔류하며 해양 생태계에 유해한 보편적인 환경 오염 물질이다. PAH류는 대부분 해양 환경에서 금속을 비롯한 다양한 오염 물질과 복합적으로 존재하지만 혼합 오염 물질이 개체에 미치는 영향에 대한 연구는 부족하다. 본 연구는 HgCl₂와 Benzo[a]pyrene (B[a]P)이 해양 생물에 미치는 영향을 개체 수준에서 평가하기 위하여 기수산 물벼룩(Diaphanosoma celebensis)을 이용하여 단일 및 혼합 급성 독성 시험을 진행하였다. 혼합 독성 평가에 사용한 혼합물의 농도는 단일 독성 시험을 통하여 얻은 각각의 LC₅₀을 기준으로 3:7 (Mixture A), 5:5 (Mixture B), 7:3 (Mixture C)의 비율로 혼합하여 결정하였다. 실험 결과 B[a]P와 HgCl₂의 48 h - LC₅₀은 각각 25.75 ㎍ l^-1와 3.6 ㎍ l^-1로 나타났다. 혼합 독성 평가 결과 Mixture A, B, C에서 TU는 각각 1.06, 0.83, 0.96로 나타났다. 이는 Mixture A, B, C가 CA 모델에 따라 작용함을 보여주며, HgCl₂와 B[a]P의 상호작용을 연구하기 위해 CA 모델을 사용하는 것이 적합할 것으로 생각된다. 본 연구는 금속과 PAH류의 혼합 독성 평가를 위한 기초 자료가 될 수 있을 것이다. Polycyclic aromatic hydrocarbons (PAHs) are persistent and commonly detected in marine ecosystem. They coexist with a various contaminants including heavy metals in real environment, but most studies have been still focused on single effects of these contaminants to aquatic organisms. In this study, the single and combined effects of benzy[a]pyrene (B[a]P) and HgCl₂ were investigated in the brackish water flea, Diaphanosoma celebensis. For combined effect study, three mixtures A (3:7), B (5:5), and C (7:3) of benzy[a]pyrene (B[a]P) and HgCl₂ were determined by 48 h - LC₅₀ values of single exposure. Combined effects of both chemicals were estimated by concentration addition (CA) model and independent action (IA) model. As results, 48 h - LC₅₀ values of benzy[a]pyrene (B[a]P) and HgCl₂ was 25.75 ㎍ l^-1 and 3.6 ㎍ l^-1, respectively. TU values of mixture A, B, and C were 1.06, 0.83, and 0.96, respectively, indicating additive effects of mixtures using CA model. This study will be helpful as basic data for understanding the combined effects of contaminants in marine environment.

대학기숙사 공용공간 계획을 위한 사용자 만족도 및 선호도 조사

김수현(Kim, Soo-Hyun),전민정(Jeon, Min-Jeong),송남남(Hong, Nam-Nan),김미경(Kim, Mi-Kyung) 한국실내디자인학회 2018 한국실내디자인학회 학술대회논문집 Vol.20 No.3

초등학생의 생물에 대한 정서적 친밀감 및 지적 호기심, 자연 및 생물에 대한 경험과 환경 친화적 행동의 관계

김흥태 ( Heung Tae Kim ),전민정 ( Min Jeong Jeon ),김재근 ( Jae Geun Kim ) 한국초등과학교육학회 2012 초등과학교육 Vol.31 No.2

The purpose of this study was to assess pro-environmental behavior of elementary school students by school year and gender and to investigate the relationships of their emotional affinity toward and intellectual curiosity about life, and experiences about nature and life with the pro-environmental behavior. A total of 436 elementary students participated in the study: 189 3rd grade; 247 6th grade students, and 233 boys; 203 girls. The variables were measured by using a self-report questionnaire with 5-point Likert scale items. The results showed the levels of pro-environmental behavior of the 3rd grade students and the girls were higher than that of the 6th grade and the boys, respectively. Their pro-environmental behavior was significantly related with all measured variables. However, it was found that the direct predictors of their pro-environmental behavior were the intellectual curiosity and the indirect experience, while the emotional affinity and the direct experience did not have a direct impact on the behavior. The predictive power of the intellectual curiosity and the indirect experience for their pro-environmental behavior was higher in 3rd grade than 6th grade. While the indirect experience was a stronger predictor of the boys` pro-environmental behavior than the intellectual curiosity, the curiosity was a stronger predictor of the girls.

연구논문 : 생물에 대한 흥미에 따른 초등학생들의 군집 유형별 성격 5요인 차이

김흥태 ( Heung Tae Kim ),전민정 ( Min Jeong Jeon ),김재근 ( Jae Geun Kim ) 한국초등과학교육학회 2014 초등과학교육 Vol.33 No.4

The aim of this study was to investigate the patterns of the elementary school students` interests to animals and plants based on affinity toward animals and plants, and curiosity about animals and plants by using a cluster analysis. In addition, the differences of the big five personality traits by the identified clusters was examined. A total number of 411 elementary school students participated in the study. The students were clustered into four distinct interest groups with respect to the level of interests to animals and plants. Cluster 1 ‘Developed Interest to Organisms group’ showed high levels in the interest to both animals and plants. Cluster 2 ‘Developed Interest to Animals group’ showed high interest to animals and relatively low interest to plants whereas cluster 3 ‘Developed Interest to Plants group’ showed high interest to plants and relatively low interest to animals. Lastly, cluster 4 were identified as ‘Lack of Interest to Organisms group’ by showing low levels of interest to both animals and plants. The four identified groups also showed different distributions of students according to gender and school year. These results support gender difference in the interest to animals and plants and suggest the decreased and specialized interest with school year. The Big Five personality traits excluding neuroticism were positively related with the interest to organisms and the identified groups showed significant differences in the traits. These findings indicate that agreeableness, conscientiousness, extraversion, and openness can be significant predictors of the interests to animals and plants.

막 완결성 시험에서 대용물 추적시험과 압력손실시험과의 LRV 신뢰성 평가

이용수 ( Yong Soo Lee ),전민정 ( Min Jung Jeon ),정창훈 ( Chang Hoon Jeong ),신용철 ( Yong Cheol Shin ),이광진 ( Kwang Jin Lee ),김형수 ( Hyung Soo Kim ) 한국물환경학회 2010 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2010 No.-

[학생기자단 기사] 전통시장, 익숙함 속의 새로움이 필요하다

김연진(Kim, Yeon Jin),전민정(Jeon, Min Jeong),송영빈(Song, Young Bin),이다니엘(Lee, Daniel),신현규(Shin, Hyun Kyu) 대한건축학회 2023 建築 Vol.67 No.4