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Atomic Force Microscopy와 신경망을 이용한 플라즈마 진단
박민근(Mingun Park),김병환(Byungwhan Kim) 대한전기학회 2006 정보 및 제어 심포지엄 논문집 Vol.2006 No.1
A new diagnosis model was constructed by combining atomic force microscopy (AFM), wavelet, and neural network, Plasma faults were characterized by filtering AFM-rneasured etch surface roughness with wavelet. The presented technique was evaluated with the data collected during the etching of silicon oxynitride thin film. A total of 17 etch experiments were conducted. Applying wavelet to AFM, surface roughness was detailed into vertical, horizontal, and diagonal components. For each component, neural network recognition models were constructed and evaluated. Comparisons revealed that the vertical component-based model yielded about 30% improvement in the recognition accuracy over others. The presented technique was evaluated with the data collected during the etching of silicon oxynitride thin film. A total of 17 etch experiments were conducted.
중학교 신입생 배정방법에 대한 비교분석 및 개선방안 연구
박민근(Park, Min-Geun),이화룡(Lee, Hwa-Ryong),허성회(Heo, Seong-Hoe),김경률(Kim, Kyeong-Ryul),동재욱(Dong, Jae-Uk) 대한건축학회 2021 대한건축학회논문집 Vol.37 No.12
The purpose of this study is to analyze the methodologies of 119 offices of education and propose the improvement alternatives in enrolling freshmen at middle schools. Each investigation office has own inherent method and there are many different allocation ways and processes. However, complaints due to distant and non-preferred school assignments have continued, it is not easy to change the student assignment method as it is with the change of school group. Though Each education office should respond temporarily to complaints by reassigning or adjusting the number of classes and students per class, it should be revised and supplemented through a close analysis of the middle school assignment method from a mid- to long-term perspective. This paper proposes (1)a short-range allocation that minimizes allocation, (2)balanced student placement between regions and schools, (3)transparency and fairness in the allocation method and process, and (4)a smart allocation method using Big Data and AI technology.
Safety Cage Homologation 위한 설계, 해석 및 제작
박민근(Mingeun Park),나종호(Jongho Na),박준규(Junegyu Park) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
Safety is very important factor in Racecar. So Roll Cage for Racecar has been developed and optimized using FEA or CAE program. But In this Country, Many Motor Sports Teams have not been proceeding this process. In order for Motor Sports in Korea to improve, Vehicle Engineering is very important factor. So In this paper, we introduce easy design and analysis for many Motor Sports Team in Korea. Also we verified our i30 Racecar Roll Cage’s safety and stiffness using CAE program. And we compared Hyundai WRC i20 Safety Cage’s stiffness.
분해모델과 구멍 메움 알고리즘을 이용한 냉장고 내부 용적의 자동 계산
박래성(Raesung Park),Jianhui Fu,정융호(Yoongho Jung),박민근(Mingeun Park) (사)한국CDE학회 2017 한국CDE학회 논문집 Vol.22 No.1
Internal capacity of a refrigerator is an important indicator for design and purchasing criteria. The components facing the internal space may have holes or gaps between parts. In traditional way, design engineers manually remodeled the parts to fill the holes and the gaps for enclosed boundary of the internal space. Then they calculated internal volume by subtracting the assembly of parts from its enclosing volume. However, filling holes and gaps is not an automated process requiring a plenty of labor and time. In this research, we have developed a voxel-based method to estimate the internal volume of a refrigerator automatically. It starts transforming all components facing the interior space into voxels and fills all holes and gaps automatically by the developed hole-filling algorithm to form a completely closed boundary of the assembly. Then, it identifies the boundary voxels that are facing to the internal voxels with any part of the component. After getting the intersection points between the boundary voxels and the surfaces of components, it generates the boundary surface of triangular facets with the intersection points. Finally, it estimates the internal volume by adding volume of each tetrahedron composed of a triangle of boundary surface and an arbitrary point.