청소년의 식생활 안전관리역량과 식생활 영역을 활용한 융합의 가치 인식 및 효능감, 역량과의 상관성 연구

김윤화,이연경 대한지역사회영양학회 2023 대한지역사회영양학회지 Vol.28 No.4

Objectives: This study aimed to investigate the correlation between adolescents’ dietary safety management competency, value recognition, efficacy, and competency of convergence using the dietary area (CUDA). Methods: Data were collected from 480 middle and high school students in Daegu, Gyeongbuk and Seoul, Gyeonggi using a self-administered five-point Likert scale questionnaire from May to July 2021. A questionnaire was used to investigate dietary safety management competency, awareness of convergence, recognition of the benefits, efficacy, and competency of CUDA. Results: We conducted factor, reliability, correlation, and regression analyses using SPSS 25. The average scores for each factor were: dietary significance (3.68); dietary safety management knowledge (3.34); food selection and cooking (3.72); nutrition management (3.38); weight management (3.28); risk dietary management (3.13); CUDA interest (2.98); convergence necessity (3.50); benefits in specialized areas (3.31); benefits in everyday life (3.48); efficacy of science and technology convergence (3.35); convergence efficacy with humanities, social science, and arts (3.31); and CUDA competency (3.41). The score for interest in CUDA was lower than that for the recognition of CUDA benefits. Significant positive correlations were observed between all factors except between risk dietary management and both nutrition and weight management (P < 0.01). Interest in CUDA and recognition of the need for convergence exhibited a positive and significant effect on all factors of the perception of CUDA benefits and efficacy. The subgroup factors of dietary safety management competency and the recognition of CUDA had a positive effect on the CUDA competency (P < 0.001, R2 = 0.58). Conclusions: Strengthening dietary safety management competency and increasing the awareness of CUDA can enhance adolescents’ convergence competency. Therefore, CUDA and targeted education must be actively promoted among adolescents.

자동차용 반도체시장 동향

김윤화 정보통신정책연구원 2008 정보통신정책 Vol.20 No.8

Chemical Deposition of Tin Nanoparticles on Highly Porous Carbon-Coated Graphite and Its Electrochemical Characterization as an Anode for Lithium Ion Batteries

김윤화,박경세,안정철,선호정,심중표 한국전기전자재료학회 2021 Transactions on Electrical and Electronic Material Vol.22 No.5

Sn nanoparticles deposited on highly porous carbon-coated graphite were prepared as anode materials in lithium-ion batteries. Graphite was coated with carbon layer by the carbonization of sucrose with silica nanopowders. The silica nanopowders were eliminated by a NaOH solution to prepare highly porous carbon-coated graphite and thereafter, it was treated with nitric acid to modify the surface of carbon layer. Finally, Sn nanoparticles were deposited on porous carbon-coated graphite by the chemical reduction of SnCl2 at room temperature. The porous carbon layer formed by the incorporation of silica and the surface modification in acidic treatment increased the surface area of graphite and decreased the particle size of deposited Sn nanoparticles. The deposition of Sn nanoparticle enhanced initial capacity of anode in lithium-ion batteries. The porous carbon layer in Sn nanoparticle deposited on graphite led to increase higher initial capacity and longer cycling performance than bare graphite because Sn nanoparticles were strongly attached to porous carbon layer after long cycles.

리튬이온전지용 주석 나노분말 담지 다공성 탄소층 코팅 흑연 음극

김윤화,심중표 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1

리튬 저장 금속인 주석은 ∼994 mAh/g의 높은 이론 용량을 나타내 리튬이온배터리용 음극재로서 연구되고 있다. 그러나 주석은 충·방전 동안 최대 300%의 부피변화를 겪으며 기계적 응력이 발생한다. 그 결과 금속 주석 전극은 충·방전 동안 균열과 분해를 일으켜 음극재료로 적용하는 것에 어려움을 겪고 있다. 탄소질 재료는 리튬을 수용하는 동안 작은 부피 변화를 경험하며 유연한 특성을 가진다. 탄소질 재료와 리튬 저장 금속을 결합 시 체적 변화를 견딜 수 있고 전극 내의 기계적 응력을 감소시켜 전극의 균열과 분해를 방지하여 안정성을 유지할 수 있다. 본 연구에서는 리튬 저장 금속의 부피 변화에 대한 응력 발생을 최소화하기 위해 주석 나노분말을 다공성 탄소 코팅된 흑연 표면에 담지 시켰다. BET, SEM, XRD 등을 통해 주석나노 입자가 담지 된 다공성 탄소 코팅 흑연의 특성을 분석하였다. 또한 전극의 충·방전 효율, C rate, 싸이클 수명 등의 전기화학적 특성을 관찰하였다.

자기효능감 증진프로그램이 실업계고교생의 자기효능감과 학교적응에 미치는 영향

김윤화 한국상담학회 2015 한국상담학회 학술대회 논문집 Vol.2015 No.8

IgM nephropathy의 병리조직학적 검색

김윤화,양문호,김명재,조병수 대한병리학회 1986 Journal of Pathology and Translational Medicine Vol.20 No.2

학술발표회 초록 ( 안전 (Ⅰ) ) : 사회적 위험성과 개인적 위험성에 대한 비교 연구

김윤화,엄성인,백종배,고재욱 ( Y . H . Kim,S . I . Um,J . B . Baek,J . W . Ko ) 한국화학공학회 1993 추계학술발표회 Vol.- No.-

초・중등 예비교사와 교사의 식생활 교육에 대한 인식과 식생활 관리 역량

김윤화 한국가정과교육학회 2018 한국가정과교육학회지 Vol.30 No.3

Attitudes to the health and dietary life of teachers affect their students. The purpose of this study was to investigate dietary and education awareness, eating habits and dietary management competency of the preliminary teachers and teachers. Data was collected from 812 pre-service teachers and teachers in South Korea using a 5-Likert self-administrated questionnaire in October to December of 2017. Data was analyzed using factor analysis, reliability, one-way analysis of variance, and correlation. The results of this study are as follows. Dietary and education awareness was classified into dietary concern and dietary management stress. Eating habits composed of healthy eating habit and bad eating habit. Dietary management competency was sub-grouped into dietary knowledge, cooking, dietary sanitation and safety, and environment. The all factors of pre - service teachers and teachers showed a significant difference except for the environmental ability factor (p <0.01). All factors were significantly different according to the age and the number of meal preparation (p <0.05). The eating habits were not significantly differences from sex. The major and health condition showed significant differences except dietary management stress and cooking factors (p <0.01). The obesity index showed significant difference in the dietary concern, bad eating habits, and cooking factors (p <0.01). In conclusion, it was required to education and develop education materials that can help the STEAM education using the dietary area. The dietary education program for the pre - service teachers and the teachers should increase the number of participating in the meal preparation considering the difference according to the general characteristics, so that the dietary management competency and the healthy eating habits should be formed. 교사의 건강과 식생활에 대한 태도는 학생들에게 영향을 미친다. 본 연구에서는 초・중등 예비교사와 교사의 식생활과 교육에 대한 인식, 식습관, 식생활 관리 역량을 알아보기 위해 실시되었다. 2017년 10월부터 12월까지 서울・경기, 충청, 전라, 강원, 경상 지역의 교육대학과 사범대학에 재학 중인 예비교사와 초・중・고등학교 교사 812명을 대상으로 5-Likert 자기기입식 설문조사로 실시되었다. 수집된 자료는 SPSS PC +24를 이용하여 빈도, 백분율을 구하였다. Varimax 회전법에 의한 요인분석을 실시하였고, Cronbach’s α를 이용하여 신뢰도를 검증하였으며, 식생활과 교육에 대한 인식, 식습관, 식생활 관리 역량의 일반사항에 따른 차이점을 알아보기 위해 one-way ANOVA와 Ryan-Einot-Gabriel-Welsch F를 이용하여 p<0.05 수준에서 유의성을 검정하였다. 본 연구의 요인분석 결과 식생활과 교육에 대한 인식은 식생활 관심도와 식생활 관리 스트레스의 2개 요인이 추출되었고, 식습관은 건강 식습관과 나쁜 식습관의 2개 요인으로 구성되었다. 식생활 관리 역량은 식생활 지식, 조리, 식생활 위생 및 안전, 환경의 4개 요인으로 구성되었다. 식생활 관심도 평균은 3.81±0.73점, 식생활 관리 스트레스 3.09±0.95점이었다. 건강 식습관은 3.39±0.77점, 나쁜 식습관 3.31±0.91점, 식생활 관리 역량 평균 점수는 3.29±0.73점이었고, 식생활 지식 요인 3.29±0.67점, 조리 요인 3.02±0.82점, 식생활 위생 및 안전 요인 4.16±0.63점, 환경 요인 3.12±0.89점이었다. 예비교사와 교사는 식생활 관리 역량의 환경 요인을 제외한 모든 요인들이 유의적인 차이를 보였다(p<0.01). 식생활 관심 요인은 성별, 전공, 나이, 건강상태, 비만도, 식사준비참여 횟수에 따라 유의적인 차이를 보였다(p<0.05). 식생활 관리 역량의 평균점수는 성별, 전공, 나이, 건강상태, 식사준비참여 횟수에 따라 유의적인 차이를 보였다(p<0.01). 예비교사와 교사를 대상으로 한 식생활 교육은 일반사항에 따른 차이점을 고려하고, 식사준비에 참여하는 횟수를 높여 식생활 관리 역량을 강화하며, 건강한 식습관이 형성되도록 적극적인 교육과 홍보가 요구되었다. 또한 식생활 영역을 활용한 융합 교육을 도울 수 있는 자료 개발이 요구되었다.

Dietary safety management competency for the sustainable health management of adolescents

김윤화 한국영양학회 2022 Journal of Nutrition and Health Vol.55 No.3

Purpose: The incidence of chronic diseases is increasing and the age of onset is decreasing in South Korea. Healthy eating habits to prevent chronic diseases are established in adolescence. This study verified the identified factors and dynamics that affect diet selfassessment for sustainable adolescent health and the prevention of chronic diseases. Methods: Data were collected from 492 middle and high school students in South Korea from June to July 2018, and the participants answered a questionnaire on dietary safety management competency for sustainable health. Results: The healthy dietary self-assessment scores of overweight/obese adolescents and adolescents who perceived their health as normal were significantly lower than those of other groups. Factor analysis verified the validity of the items that comprised each study area before a multiple regression analysis was used to investigate the factors affecting healthy dietary self-assessment. Sweet and salty diets, anxiety, food and nutrition knowledge, weight management knowledge, stress management, exercise, basic eating habits, and healthy eating habits significantly affected healthy dietary assessment among adolescents. A higher perception of one’s health indicated a higher healthy dietary self-assessment, dietary safety knowledge, and health management practice scores (p < 0.01). Factors like healthy dietary self-assessment, food and nutrition knowledge, and weight management knowledge appear to have a significant correlation with other identified factors, except overeating. The adolescents’ awareness, knowledge, and dietary safety practices influenced healthy dietary self-assessment, which can prevent chronic diseases and achieve sustainable health. Conclusion: This study illustrated how the adolescents’ awareness, knowledge, and practices of dietary safety influenced their healthy diet self-assessment. The results indicate that dietbased health management competency education relative to the adolescents’ self-perception and weight levels should be implemented.

환경변화에 대비한 우편시장의 경쟁력 비교분석

김윤화,이용수 정보통신정책연구원 2003 우정정보 Vol.2003 No.2