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Efficient Face Detection using Adaboost and Facial Color
정지년(Ji-nyun Chung),양현승(Hyun Seung Yang) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.2
We propose a cascade face detection model using the Adaboost algorithm and a face/non-face classifier using facial color. The face/non-face classifier using facial color has low computational cost and can reject non-face subwindows in the early stage of the cascade face detector. The proposed model rejects many false alarms and reduces the overall computation time of face detection.
정지복 ( Ji Bok Chung ),윤종훈 ( Jong Hoon Yoon ) LGCNS 엔트루정보기술연구소 2009 Entrue Journal of Information Technology Vol.8 No.1
본 연구는 국내 타이어 제조업체인 A사가 ERP 시스템을 구축하면서 생산부문의 최적화를 위해 생산계획 전문 솔루션인 i2사의 FP(Factory Planner) 시스템을 동시에 구축하였던 프로젝트 사례를 다루고 있다. 사례기업인 A사의 타이어 제조공정과 주요 생산제약 조건을 살펴보고 이에 대한 FP 모델링 방법을 제시하였다. A사의 생산공정 특성으로 인해 FP 모델링 결과와 생산실행 가능성 사이에 차이가 발생하는 이슈가 도출되었다. 본 연구에서는 도출된 이슈를 해결하기 위해 블록계획(Block Plan)의 개념을 도입하고 이를 통하여 A사의 FP 시스템이 원활하게 정착될 수 있었던 사례를 다루고 있다. A tire manufacturing company has implemented an FP (Factory Planner) system for the optimization of production planning. The objective of case study is to review the planning process and key constraints in a case company. We suggest an FP modeling for the manufacturing resources and constraints in a case company. To resolve the modeling issue which was arisen due to the manufacturing characteristics of a case company, we suggest a block plan which resulted in the soft settlement of an FP system.
정지운(Chung, Ji-woon),남상석(Nam, Sang-Seok),박훈영(Park, Hun-Young),이철현(Lee, Chul-Hyun),권경탁(Kwon-Kyung-Tak),선우섭(Sunoo, Sub) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.1
The purpose of this study is to provide amount of taekwondo poomsae for black belts. For this study, 12 males of elite Poomsae athletes of K university were involved and measured physiological responses. Measurement variables are performing time, pace, HR, V02, carbohydrate oxidation rate(COR) and fat oxidation rate(FOR). Exercise intensity and energy expenditure were measured by VmaxST and Polar-system during Poomsae performed. Conclusions were drawn as follow; 1) Among 6 black belts Poomsae, Sipjin was identified as Poomsae taking longest performance time with 85.2±4.4seconds, and Taebaek as fastest performance speed with 0.62motion/sec. Also, Pyeongwon was recorded as the highest kicking motion ratio of upperㅡlower body action average of 11.5%, 2) In performed once, Goryo was identified as highest heart rate scores with 128.9±9.1 beat/min and also in VO2 with 26.3±2.8ml/kg/min. 3) On the average, in 10 consecutively times, the mean of HR was 179.5±20.1beat/min, and mean of VO2 was identified 45.3±9.0ml/kg/min. 4) On the average, in 10 continuos times, the mean of amount of carbohydrate was measured with 94.5±27.1g/h, and the average of quantity of fat was investigated with 28.5±7.4g/h. Thus people can train poomsae for their health by controlling repeated times or training times.
부부갈등과 유아의 수면문제 간의 관계에서 어머니 우울의 매개효과
정지나(Jee Nha Chung) 한국보육지원학회 2018 한국보육지원학회지 Vol.14 No.5
Objective: The goals of this research were (1)to examine the relationship among parental conflict, mothers depression and preschoolers sleep problems, and (2) to examine the mediating effects of mothers depression between marital conflict and preschoolers sleep problems. Methods: The participants were 1,639 mothers with preschoolers taken from the 5th year Korean Children Panel. Date were analyzed using descriptive statistics, partial correlation analysis, and multiple regression analysis. Results: The results were as follows: First, preschoolers sleep problems were positively related to marital conflicts. Second, preschoolers sleep problems were positively related to mothers depression. Third, marital conflict was positively related to mothers depression. Lastly, mothers depression fully mediated the relationship between marital conflict and preschoolers sleep problems. That is, marital conflict had an effect on preschoolers sleep problem, only through mothers depression. Conclusion/Implications: Based on the results, intervention programs should be developed to prevent preschoolers sleep problems such as marital relationship improvement programs and mothers depression improvement programs.