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구멍 오류의 유추해석을 통한 STL 포맷의 형상복구에 관한 연구
손영지,이승수,김순경,전언찬 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.1
STL files are used as input data of the rapid prototyping system first developed by 3D System Company. They are composed of ASCⅡ letters and can be easily checked by one's own eyes. They can also be handily converted from the conventional CAD systems, but some errors take place in the process of conversion. So the STL data and the original CAD data can have different volume. This paper recommends the new method of Delaunay's triangulation method in order to decrease volume errors by verifying STL file errors and modifying hole errors. Each vertex for the boundary coordinates of the verified hole errors was analyzed according to the following cases: planes or slow curves, edges, apexes, and rapid curves. In each case, a different modification process was adopted. With this method, most errors resulting from the conversion into the STL data as well as lots of volume errors arising from error modification were decreased.
2차원 가공정보의 DB구축을 통한 CAM시스템 개발에 관한 연구
손영지,박정보,김순경,전언찬 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.2
NC code has to be made after changing the drawing information to DXF file, the convertig file. When the information is changed, the converted file is made decrease the unnecessary time of rapid feed during working and the DATA capacity after arranging the information ordered irregularly. This CAM program can be increased decreased uncomfortableness in contrast to use of each system based AutoCAD it can be increased productivity, example decrease of create time and product time about information, construct database of DXF code. And it can be used easely for the beginner of the minor enterprises. The connection of operations and the use of GUI increase business efficiency.
Synthesis of conductive PEDOT: PVS/RGO compound by noncovalent interaction
손영지,박영호,김석준,조성호,류형선,인인식 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Conductive polymer are regarded as promising materials of transparent electrodes because of their outstanding conductivity, unique transparency, lightness, low price, flexibility and high workability in industrial processing. Poly (3, 4-ethyldioxythiophene) (PEDOT), as one of the conductive polymers, is able to be used as the flexible organic electronic material. We synthesized water soluble reduced graphene oxide (RGO) via functionalization with poly(vinyl sulfate) (PVS) through Noncovalent interaction, And then fabricated the polyelectrolyte complex PEDOT:PVS/RGO adding acidic catalyst, oxidizing agent and 3,4-ethyldioxythiophene (EDOT) using noncovalent interaction. Additionally, We proved applications of Conductive PEDOT:PVS/RGO compound film as transparent electrode through characterization using measuring 4 point probe for square resistance and UV-vis spectroscopy for transmittance.
손영지,김순경 동의공업대학 1998 論文集 Vol.24 No.1
This paper recommends database construction for STL data and a new method of Delaunay's triangulation in order to decrease volume errors by verifying STL file errors and modifying hole errors. Each vertex for the boundary coordinates of the verified hole errors was analyzed according to the following cases: planes or slow curves, edges, apexes, and rapid curves, In each case, a different modification process was adopted. With this method, most errors resulting from the conversion into STL data. as well as many volume errors arising from error modification, were decreased.
어머니의 아동기 학대경험과 부정적 양육행동의 관계: 적대적 귀인편향과 정서조절곤란의 매개효과
손영지,이승연 한국심리학회 산하 한국발달심리학회 2022 한국심리학회지 발달 Vol.35 No.2
In order to understand the psychological mechanisms influencing the occurrence of child abuse, this study focused on the mother’s negative parenting behavior. This study intended to examine the mediating effects of hostile attribution bias and emotion dysregulation on the relationship between mother’s experience of childhood abuse and negative parenting behavior. Data of 396 mothers with children from grade 1 to 3 in elementary school were analyzed using structural equation modeling. As a result, mother’s childhood abuse directly predicted negative parenting behavior. In addition, emotion dysregulation showed significant mediating effects on the path between mother’s childhood abuse and negative parenting behavior. Furthermore, the double mediating effect was significant for the relationship between mother’s childhood abuse and negative parenting behavior. In other words, mother’s childhood abuse predicted an increase in hostile attribution bias, which in turn contributed to a high level of emotion dysregulation, further leading to an increase in negative parenting behavior. Finally, effective prevention strategies along with the implications of these findings are discussed. 본 연구는 아동학대의 발생 기제를 이해하기 위하여, 주 양육자인 어머니를 대상으로 어머니의 아동기 학대경험이 부정적 양육행동으로 이어지는 과정에서 적대적 귀인편향과 정서조절곤란의 매개효과를 살펴보았다. 이를 위해 초등학교 1-3학년 자녀를 둔 어머니 396명의 자기보고식 설문자료로 구조방정식 모형 분석을 실시하였다. 분석 결과, 어머니의 아동기 학대경험은 부정적 양육행동을 직접적으로 예측하였다. 또한 어머니의 아동기 학대경험과 부정적 양육행동의 관계에서 정서조절곤란의 매개효과가 유의하였다. 마지막으로 어머니의 아동기 학대경험은 적대적 귀인편향과 정서조절곤란을 순차적으로 거쳐 부정적인 양육행동을 예측하였다. 즉 어머니의 아동기 학대 경험은 적대적 귀인편향의 증가를 예측하고, 이어서 정서조절곤란에 영향을 주어 부정적 양육행동의 증가로 이어졌다. 본 연구 결과 확인된 부정적 양육행동의 발생 기제를 기반으로 아동학대 예방을 위한 시사점에 대해 논의하였다.
어머니의 양육스트레스와 양육행동간의 관계: 성격의 중재효과
손영지,박성연 한국인간발달학회 2011 人間發達硏究 Vol.18 No.2
The purpose of this study was to examine the relationships between a mother's personality, maternal parenting stress and parenting behavior and to investigate whether the mother's personality (neuroticism & extraversion) has a moderating role between parenting stress and parenting behavior. Data were collected from 350 5th-6th grade children and their mothers via questionnairs on parenting behavior, parenting stress and personality type. Correlation analysis and multiple regression were carried out for the purposes of data analysis. The results revealed that 1) Maternal parenting was predicted by parenting stress but not by personality, indicating that the more stress mothers perceive themselves to be under, the lower degree of warm parenting mothers exhibit. 2) The mother's personality, in particular, sociable or active extraversion, tended to moderate the association between parenting stress and parenting behavior. Specifically, mothers with high sociable or active extraversion characteristics were likely to exhibit permissive and uninvolved parenting styles while under higher parenting stress. Moreover, mothers with high sociable extraversion characteristics exhibited lower rejective and restrictive parenting styles while under less parenting stress than lower sociable extraversion.
비공유결합을 통해 High Molecular Weight Polyethylene Glycol을 이용한 수용성 Chemically Reduced Graphene Oxide의 제조
손영지,박영호,인인식 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Chemically reduced graphene oxide (rGO)와 지방족 고분자 사이의 비공유결합은 수용성 rGO/polyethylene glycol (PEG) assembly의 형성에 의해 검증되었다. PEG는 다양한 수용성 지방족 고분자 중에서 가장 간단한 구조이다. 오직 고분자량의 PEG만이 rGO/PEG assembly 형성에 성공함에 따라서 본 발표는 π-rich rGO와 π-rich PEG사이의 반데르발스힘 (혹은 π-π 상호작용)을 제안했다. rGO/PEG composite (혹은 assembly)의 열적 특성은 PEG에 비해 극적으로 변화했으며 이는 composite 내부의 rGO 함량에 따라 다르다.