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초등학생들의 생태계 학습에서 시스템 사고의 적용 유형 분석
한진아(Jin-A Han),최도성(Do-Sung Choi) 한국환경교육학회 2013 環境 敎育 Vol.26 No.2
This study was carried out under an assumption that system thinking is necessary to understand ecological concepts systematically. Based on the assumption, the goal of this study was to figure out how elementary students’ system thinking works during their lessons related to an ecosystem. For the study, students were playing a game to connect ecological concepts and drawing a causal loop map. Data from both activities were collected and analyzed. In this study, students’ system thinking was classified as four types; type A (High Concept-High System Thinking, HH), type B (High Concept-Low System Thinking, HL), type C (Low Concept-High System Thinking, LH), and type D (Low Concept-Low System, LL). In a result, among sixty participants, eight (13.3%) participants were placed in type A (HH) and six (10%) participants were placed in type B (HL) and type C (LH). Eighteen (30%) among sixty participants were placed in type D and others couldn’t be classified in any categories. It represents that both type D and non-classified participants (77%) could apply system thinking in their ecosystem lessons either non or a little. Especially, in terms of understanding both elements and any relationships among elements in an ecosystem, 40% participants were placed in type C and type D and it thus means students’ understanding related the concepts is not advisable. Considering an ecosystem as a system, any strategies to improve students’ system thinking in order to learn the concepts related to an ecosystem should be developed with details.
한진아(Jin A Han),김수정(Soo Jeong Kim),김세롬(Se Rom Kim),전기홍(Ki Hong Chun),이윤환(Yun Hwan Lee),이순영(Soon Young Lee) 한국보건교육건강증진학회 2015 보건교육건강증진학회지 Vol.32 No.3
Objectives: The contribution of health behavior is high in the mortality variation. Mortality variation can be decreased through the policies and programs for improving health behavior. We investigated that health behaviors effected with standardized mortality in community. Methods: We examined the distribution of health determinant factors and correlation analyzed between factors and performed multiple linear regression. Data were collected from 2012 Community Health Survey in 253 communities, annual regional statistics, and statistics from Statistics Korea. Results: This study defined that the variation of standardized mortality and there are exist inequality level of health determinant factors in 253 communities. This study showed that the higher standardized mortality explained through health behavior factors of the current smoking rate, walking exercise rate and diagnosis of hypertension or diabetes rate after adjusted other factors(adjusted R²=0.709, p<0.001). Conclusions: Smoking, walking exercise and diagnosis chronic disease affecting on the regional variation of standardized mortality. These factors can be improved by the local residents themselves.
김아름(A Rum Kim),이란(Ran Lee),한진순(Jin Soon Han),이은주(Eun Ju Lee) 한국언어청각임상학회 2017 Communication Sciences and Disorders Vol.22 No.3
배경 및 목적: 조음복잡성이 음운 특성과 조음오류에 미치는 영향을 알아보기 위하여 조음복잡성이 높은 비단어와 낮은 비단어 따라말하기를 통해 단어단위 음운 특성과 조음오류 유형별 빈도를 살펴보았다. 방법: 4세 전반, 4세 후반, 5세 전반, 총 45명의 일반아동을 대상으로 50개의 비단어 따라말하기를 실시하였다. 조음복잡성 점수(저/고)에 따른 단어단위 분석 지표(단어 정확률, 단어 평균음운길이차, 단어 근접률, 단어 변이율)와 조음오류 유형별 출현빈도에서 나타난 연령 집단별 특성을 살펴보았다. 결과: 조음복잡성과 연령에 따라 단어단위 분석 지표에서 차이가 유의하였으며, 조음복잡성과 연령의 상호작용 효과도 유의하였다. 조음복잡성 저단어와 고단어에서 모든 단어단위 분석 지표의 차이가 유의하였으며 4세 전반과 4세 후반, 4세 전반과 5세 전반은 조음복잡성 저단어와 고단어에서 유의한 단어단위 지표 차이를 보였다. 단어 정확률에서의 차이는 4세 후반과 5세 전반에서도 유의하였으나, 단어 변이율에서는 조음복잡성 저단어에서 연령 집단 간 차이가 유의하지 않았다. 조음오류 유형별 출현빈도는 조음복잡성 저단어보다 고단어에서 높았으며, 4세 전반에서 가장 높았고, 4세 후반, 5세 전반 순으로 낮아지는 경향을 보였다. 조음오류 유형별 출현빈도는 대치가 가장 많았으며, 생략, 첨가 순으로 나타났다. 논의 및 결론: 조음복잡성 고단어에서 조음오류의 빈도가 높다는 선행연구 결과를 지지하고, 임상에서 조음 평가 및 중재 시 조음복잡성을 고려한 어휘 선정이 필요함을 보여준다. Objectives: This study investigated whole-word phonological characteristics and articulation error types through nonword repetition under different phonetic complexity to examine the effect of phonetic complexity on phonological characteristics and articulation error frequencies. Methods: Forty-five typically developing children aged 4-5 participated as subjects and were divided into three group: early 4 years old, late 4 years old, and early 5 years old. A repetition task using 50 nonwords was performed with the respective groups to investigate inter- and intra-group differences in whole-word analysis indexes and frequencies of articulation error by type according to phonetic complexity scores (low/high). Results: Significant differences were found in the whole-word analysis indexes between age groups and phonetic complexity. The interaction effects of phonetic complexity and age group were also significant. Significant differences were found between the early 4 years old and late 4 years old, and between early 4 years old and early 5 years old. Differences between late 4 years old and early 5 years old were significant in word correctness, whereas a difference among age groups was not found in word variability of nonwords with low phonetic complexity. Frequency of articulation error by type was higher for nonwords with high phonetic complexity. Articulation error by type occurred most frequently among the early 4 years old. As for articulation error by type, substitution occurred most frequently, followed by omission and addition. Conclusion: Results supported the previous studies suggesting that articulation error frequency is higher for nonwords with high phonetic complexity, and thus indicated the necessity for word selection allowing for phonetic complexity when conducting clinical phonological assessment and intervention.
참당귀(Angelica gigas)의 DPPH Radical 소거 활성과 항산화 효과
강순아(Soon Ah Kang),한진아(Jin A Han),장기효(Ki-Hyo Jang),조여원(Ryowon Choue) 한국식품영양과학회 2004 한국식품영양과학회지 Vol.33 No.7
본 연구의 결과를 요약하면 참당귀추출물 1 ㎎/mL의 농도에서 열수추출물의 free radical 소거 효과는 메탄올추출물보다 높게 나타났으며 농도 의존적으로 DPPH free radical 소거 효과가 상승하는 것을 관찰하였다. 또한 참당귀 투여에 의하여 화학요법으로 발생된 지질과산화물의 생성을 감소시켰으며, 단백질 산화를 유의적으로 억제함으로써 참당귀추출물은 CYP를 투여로 생성된 free radical을 감소시킴으로써 독성을 감소시켜, 혈액학적 빈혈지표가 더 감소되는 것을 막았다고 사료되며, 항산화제로서의 가능성이 있는 한약재로서 활용성이 높을 것으로 사료된다. 항산화효소인 SOD 활성은 CYP 투여에 의하여 활성이 증가하였으며 참당귀추출물의 투여에 의한 효과가 나타나지 않았으나 감소하는 경향을 보였고 catalase 활성은 CYP 투여에 의하여 활성이 증가하였으나 참당귀의 효과는 차이가 없었다. 결론적으로 참당귀추출물은 free radical 소거능을 갖고, 화학요법으로 발생된 지질과산화물의 생성을 낮춰 화학요법에 의한 부작용으로 발생되는 혈액학적 수치의 감소를 막음으로써 항산화제로의 활용성을 기대해본다. This study was carried out to evaluate the free radical scavenging effect and antioxidant effect of Cham-Dang-Gui (Angelica gigas) on cyclophosphamide (CYP) injected rats. Rats were divided into five groups: CON(normal group), ANS (CYP-injected and normal diet group), AND (CYP-injected and normal diet and Cham-Dang-Gui-treated group), ALS (CYP-injected and low iron diet group), and ALD (CYP-injected and low iron diet and Cham-Dang-Gui-treated group). CYP (30 ㎎/kg) was intraperitoneally injected to rats for early 3 days. Saline or Cham-Dang-Gui was administrated orally for entire experimental period. DPPH radical scavenger activity was measured by DPPH method, it was shown higher in methanol extract (81.5%) than in water extract (66.3%) of Cham-Dang-Gui. We observed the preventive effects of Cham-Dang-Gui on lipid oxidation of liver and protein oxidation of plasma. Hepatic SOD and catalase activities were significantly higher in CYP-injected group (ANS) than CON group, but SOD activity was slightly lowered in Cham-Dang-Gui treated group than CYP-injected group (ANS). These results suggest that extract of Cham-Dang-Gui could be useful for functional materials to reduce the oxidation of lipids and protein induced by free radicals.
중학생과 고등학생의 수면미충족 유형과 자살생각과의 연관성
김수정(Soojeong Kim),한진아(Jin A Han),김은지(Eun-Ji Kim),이순영(Soon Young Lee) 한국보건교육건강증진학회 2021 보건교육건강증진학회지 Vol.38 No.2
Objectives: The purpose of the study was to examine the association between sleep insufficient type and suicidal ideation among Korean middle and high school student. Methods: The data for this study was the 2018 Youth Health Behavior Survey. Sleep insufficient type was classified 4 categories(Type of quantitative and qualitative sufficient; Type of quantitative insufficient; Type of qualitative insufficient. Type of quantitative and qualitative insufficient). Multiple frequency and multiple chi-square analysis was performed. And multiple logistic regression analysis was performed to the association between sleep insufficient type and suicidal ideation for middle and high school students. Results: 40.1% of middle school students reported that they felt subjective sleep sufficient and slept more than the average sleep duration while 30.4% of high school students stated they did. For middle school students, the odds ratio(OR) of suicidal ideation in Type of quantitative insufficient was 1.18 times(95%CI, 1.05-1.33), in Type of qualitative insufficient was 1.37 times(95% CI, 1.18-1.60), in Type of quantitative and qualitative insufficient was 1.58 times(95% CI, 1.40-1.77) higher than Type of quantitative and qualitative sufficient. For high school students, the odds ratio of suicidal ideation in Type of quantitative insufficient was 1.26 times(95%CI, 1.08-1.47), in Type of quantitative and qualitative insufficient was 1.20 times(95% CI, 1.05-1.36) higher than Type of quantitative and qualitative sufficient. Conclusion: Sleep insufficient type and other characteristics for suicidal ideation were different among middle and high school students. In order to reduce suicidal ideation and suicide mortality, it might need to improve the sleep insufficient for the students and to intervention by student characteristics.