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경북 울진·강원 삼척 등 산불에 따른 인구 이동 패턴에 대한 탐색적 연구
정지혜,황우석,표경수,Jeong, Ji Hye,Hwang, Woosuk,Pyo, Kyungsoo 대한원격탐사학회 2022 大韓遠隔探査學會誌 Vol.38 No.6
In 2022, wildfires broke out in Uljin-gun and Samcheok-si, which set the record for the longest forest fire in Korea, but there were no casualties. To protect local residents from wildfires, they must evacuate. Predicting the demand for evacuation in the event of wildfires is essential for the efficiency of disaster management. The purpose of this study is to analyze the human mobility patterns according to the occurrence of Uljin-gun and Samcheok-si wildfires. SKT floating population data was used in this study to analyze the human mobility patterns in Uljin-gun and Samcheok-si. The main findings are as follows. First, while the movement of the resident and visiting population decreased, the movement of the worker population was found to be similar to normal. Second, the resident population of Buk-myeon, Uljin-gun moved to the surrounding area to avoid the wildfires. Third, the region is an area judged to be safe from wildfires, and this mobility patterns are related to emergency disaster text messages. This study confirmed human mobility patterns of the population in the area where the wildfires through the floating population data, which is quantitative data. This suggests that it is important to guide residents to shelters through emergency text messages to minimize damage in the event of wildfires.
췌장암 세포에서 치자나무 열매의 세포주기 정지 및 활성 성분의 세포증식억제
정지혜(Ji Hye Jeong),이화진(Hwa Jin Lee) 한국식품과학회 2022 한국식품과학회지 Vol.54 No.5
GJF 처리된 PANC-1 인간 췌장암 세포의 증식이 농도의존적으로 억제되었고, 이는 GJF에 의한 세포주기 S기에서의 세포 축적으로 인한 세포주기 정지 유도 및 세포주기 조절단백질의 과도한 발현 저해 활성과 관련이 있음을 확인하였다. 또한 GJF의 함유 성분인 geniposide 및 4,5-dicaffeoylquinic acid가 췌장암 세포에 대해서 GJF와 유사한 증식억제활성을 나타내었다. 이와 같이, GJF의 췌장암 세포주기 제어 및 증식억제결과와 그 활성성분으로 geniposide 및 폴리페놀인 4,5-dicaffeoylquinic acid를 제시함으로써 GJF의 항암 활성에 대한 기초자료로 활용될 수 있을 것으로 생각된다. The ethyl acetate fraction of Gardenia jasminoides fruit (GJF) showed S-phase arrest of cell cycle in pancreatic cancer PANC-1 cells. GJF also reduced the levels of cell cycle regulatory proteins, such as cyclin B1, cyclin D1, and FoxM1, in PANC-1 cells and suppressed cell viability. Furthermore, the cell viability of PANC-1 cells was reduced by geniposide and 4,5-dicaffeoylquinic acid, which were detected in GJF by HPLC analysis. These results suggested that GJF has anti-proliferative activity via cell cycle arrest and regulation of cell cycle-related proteins in PANC-1 pancreatic cancer cells, and these effects of GJF might be partially attributed to geniposide and 4,5-dicaffeoylquinic acid.
사출-구조 연성해석을 이용한 GF 함유량이 구조적 강성에 미치는 영향에 대한 연구
정지혜(Ji-Hye Jeong),노진환(Jin-Hwan Noh),백주현(Ju-Hyun Baek),김학성(Hak-Sung Kim) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Glass fiber reinforced plastic (GFRP) injection molding has been an important field in most industrial fields. In the molded (GFRP) part, the mechanical strength can be degraded due to post-deformation, residual stress and weld line after injection molding, which is crucial on the reliability of the molded products. In this work, the residual stress, glass fiber orientation and weld-line in a standard injection molded tensile test specimen was analyzed followed by its structural simulation with injection molding simulation (Moldflow) combined with commercial structural software (ANSYS). The effect of the number of injection molding gates and glass Fiber content(10%/20%/30%) on the weld-line and the glass fiber orientation were studied in the analysis. Finally, their effect on the mechanical strength were compared tested with tensile static test and the feasibility of the combined analysis was
고분자 재질로 제작된 내압용기의 안전성 예측을 위한 해석적 접근법
정지혜(Ji-Hye Jeong),김현영(Hyun-Young Kim),안중근(Joong-Keun An),백주현(Ju-Hyun Baek) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
In the small household appliances system, in an efficient and hygienic to use of a lot of pressure vessel of plastic material. It is necessary to reflect on the design in order to produce a stable structure, and reduce the failure by predicting a weak position before producing the pre-task. Compare to typical steel, polymer material is way more ductile. Thus, it is not easy to analytically validate. In this work, the fracture ductility in accordance with the pressure of the pressure vessel fabricated by PP is a strong polymer material were studied a method of predicting. To the toughness values that can take into account the growth and the criterion of reduction in the mechanical properties. Area obtained by integrating the Stress-Strain curve due to the pressure change. It was defined as fracture toughness due to pressure. It was analyzed followed by its structural simulation with commercial structural analysis software (ANSYS) and using the breaking pressure obtained through actual experiments was applied to the analytical criteria. Polymer material through this method propose a method for predicting the fabricated parts determined analytically.
불안정 애착 유형과 편집증의 하위유형의 관계에서 부정적 평가신념의 매개효과 : 대학생을 대상으로
정지혜(Ji Hye Jeong),이영호(Young-Ho Lee) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.1
본 연구는 불안정 애착유형에 따라 편집증의 하위유형에 차별적으로 영향을 미치는지를 확인하고, 부정적 평가신념의 매개효과를 검증하고자 하였다. 이를 위해서 350명의 대학생 및 대학원생이 성인기 애착척도(ECRS), 부정적 평가신념 척도(EBS), 박해와 받아 마땅함 척도(PaDS)를 사용한 설문에 참여하였다. 자료 분석 결과는 다음과 같다. 첫째, 불안정 애착유형(회피애착, 불안 애착)과 두 종류의 부정적 평가신념(자신에 대한, 타인에 대한), 그리고, 편집증의 하위유형(피해편집증, 처벌편집증)은 모두 정적 상관을 보였다. 둘째, 불안정 애착과 피해편집증의 관계에서 타인에 대한 부정적 평가신념이 피해편집증을 완전 매개하였으며, 불안정 애착과 처벌편집증의 관계에서 자신에 대한 부정적 평가신념은 처벌편집증을 완전 매개하였다. 반면, 애착 유형에 따라 부정적 평가신념의 종류를 차별적으로 설명하지는 못하였다. 마지막으로 본 연구의 시사점과 제한점, 그리고 후속연구에 대해 논의하였다. The purpose of the study was to verify the role of negative evaluative beliefs as mediator variable between insecure attachment and two types of paranoia. 350 Korean undergraduate and graduate students participated in completing the Experiences in Close Relationship Scale(ECRS), the Evaluative Belief Scale(EBS), the Persecution and Deservedness Scale (PaDS). The results showed that significantly positive correlation between insecure attachment and negative evaluative beliefs as well as between negative evaluative beliefs and two type paranoia were appeared. Second, negative evaluative beliefs appeared to have mediation effect in relationship between insecure attachment and two types of paranoia. Also, the present study found full mediation effect of negative evaluative beliefs between insecure attachment and two types of paranoia. The results implied that insecure attachment and negative evaluative beliefs significantly contribute to the two types of paranoia. Lastly, the implications and limitations of this study were discussed.
정지혜(Jeong Ji Hye),권정윤(Jeong Yoon Kwon) 한국육아지원학회 2011 육아지원연구 Vol.6 No.2
본 연구는 유아의 개인변인에 따라 자아존중감과 정서지능 및 리더십에 차이가 있는지를 알아보고 유아의 자아존중감, 정서지능 및 리더십 간의 관계 및 유아의 자아존중감과 정서지능이 리더십에 미치 는 영향을 알아보는데 목적이 있다. 연구를 위하여 서울과 경기 및 인천지역에 위치한 12곳의 유치원과 어린이집에 재원하고 있는 만 4∼5세 유아 218명을 대상으로 설문조사를 실시하여 분석하였다. 연구결 과는 첫째, 유아의 리더십은 성별에 따라 유의한 차이가 있는 것으로 나타났으며, 성별과 출생순위에 따라 상호작용 효과가 있는 것으로 나타났다. 즉, 여아가 남아보다 리더십이 더 높았으며, 남아는 첫째 가, 여아는 둘째 이상이 리더십이 가장 높았다. 둘째, 유아의 자아존중감 및 정서지능은 리더십과 유의 한 정적 상관관계를 갖고 있는 것으로 나타났다. 즉, 유아의 자아존중감과 정서지능이 높을수록 리더십 이 높은 것으로 나타났다. 셋째, 유아의 자아존중감과 정서지능은 리더십에 유의한 영향을 주는 변인으 로 나타났다. The purpose of this study was examine the effect of young children’s self-esteem and emotional intelligence on children’s leadership. The participants of this study were 218 young children of four- to five-year-olds who were enrolled in the 12 kindergartens and child-care centers at Seoul, Inchoen, and Gyeonggi area. The results of this study were as follows. First, young children’s leadership showed significant differences by gender. Also, the interaction effect by gender and birth order of children was found in children’s leadership. It means that girls had higher leadership scores than boys; moreover, the first-born boys and second-born or more girls had the highest leadership score. Secondly, there were positive relationships among children’s leadership, self-esteem and emotional intelligence. Finally, young children’s self-esteem and emotional intelligence were the significant predictors of young children’s leadership. Positive self-esteem was the strongest predictor for children’s leadership.