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김동민,Kim, Dong-Min 한국상하수도협회 1977 水道 Vol.9 No.-
이글은 76년11월13일 열린 본협회 제4차 정기총회에 앞서 기념강연회에서 있었던 서울산업대학 위생공학과장 김동민 교수의 강연내용을 간추린 것이다.
김동민,노병언,허정훈,이욱교,양성찬,이동규 한국곤충학회 2018 Entomological Research Vol.48 No.5
Adult mosquito surveillance was conducted from 2013 through 2014 at four cattle sheds, a wild bird refuge, and two residential areas located in Gyeongnam Province in the Republic of Korea. Adult mosquitoes were collected in black light traps from April 1, through November 30. Mosquito surveillance was conducted to figure out population densities of vector mosquitoes, possibly invaded mosquitoes and identify various virus infections at the selected sites. A total of 107,466 females comprising 14 species and 7 genera were collected from 2013 to 2014. The most common species collected were Culex tritaeniorhynchus Giles (63.8%), Anopheles sinensis s.l. (18.9%), Aedes vexans nipponii (Theobald) (7.7%), and Culex pipiens Coquillett (5.1%). Trap indices (TIs) varied widely for species over their range, due to geographical distribution and degree of association with rural and urban communities. The most collected An. sinensis s.l. and Cx. tritaeniorhynchus appeared at a cow shed in Hapcheon (TI 347.5) and a pigsty in Daejeo‐1‐dong, Busan (TI 1,040.8), respectively, due in part to their situation near breeding sites such as rice paddies. The bi‐weekly population densities for mosquito species were variable for each of the years, apparently as a result of variable annual weather conditions. None of the mosquito species collected tested for the flavivirus including Japanese Encephalitis Virus, West Nile Virus, Dengue Virus, and Zika Virus infections by polymerase chain reaction (PCR) assay were positive.
아동이 지각하는 부모애착이 아동의 관계적 공격성에 미치는 영향: 또래존재감과 거부민감성의 이중매개효과를 중심으로
김동민,임지영 한국가족관계학회 2023 한국가족관계학회지 Vol.27 No.4
Objectives: This study aimed to examine the dual mediating effects of children’s mattering and rejection sensitivity in the relationship between children’s relational aggression and parental attachment perceived by children. Method: The survey was administered to 485 students who were 11-13–year-old attending elementary schools in Daegu, Gyeongsangbuk-do Province, Ulsan, and Gangwon-do Province. For data analysis, independent sample t-test, ANOVA, and Pearson correlation analysis were performed. Model 6 of PROCESS macro for SPSS 25.0 was used to verify the mediating effect of children’s mattering and rejection sensitivity. Results: First, there were significant differences in children’s relational aggression by grade, but there were no significant differences by gender, sibling relationship, and economic condition. Second, there were significant positive correlations between relational aggression and rejection sensitivity and negative correlations among relational aggression, parental attachment, and children’s mattering. Third, children’s mattering and rejection sensitivity mediated in sequence the effect of parental attachment on children’s relational aggression. Conclusions: This study is meaningful in that it examined variables associated with relational aggression, which has important implications for later interpersonal relations among 11-13 year old children. Results also provide preliminary data to develop and implement programs to reduce children’s relational aggression and seek parents’ stable attachment.
전류형 컨버터의 사이리스터 게이트 구동 회로 부피 저감 설계 방식
김동민,김동호,오도영,정현삼 전력전자학회 2024 전력전자학회 논문지 Vol.29 No.1
This paper proposes a new thyristor gate driving circuit for current source inverters. The proposed method exploits a gate driver IC based on a push-pull circuit instead of pulse transformers and additional switching devices in a conventional gate driver circuit. The results confirmed that the proposed circuit’s volume is significantly reduced compared with the conventional circuit, and experimental results reveal that, despite its smaller size, the proposed circuit can turn on thyristors adequately as designed.