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손연아,김경란,민병미,최돈형 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.2
The purpose of this study was to analyze the professionalism of elementary school teachers and to draw out factors which elementary teachers should try to improve their professionalism for environmental education. For the study, both Quantitative analysis and qualitative methodologies were applied: First, randomly selected 483 elementary teachers from Seoul and Gyeonggi self responded to 5 evaluation areas by Hungerford et al. (1994) to evaluate their environmental education professionalism through the use of five point Likert scale. Second, 2 elementary teachers' environmental classes were observed for the purpose of analyzing strengths and weaknesses in classroom instruction, and then the results of self-evaluation on environmental education professionalism and teacher professionalism as shown in the classes were compared. It was found that 483 elementary teachers including 2 teachers for analyzing classroom instruction who performed a self-evaluation gave themselves mid-scores on the Hungerford et al.'s 5 evaluation areas. However, the result of self-evaluation did not correspond with the result of actual class observation and teacher interview. That is, the actual environmental classes conducted by 2 teachers did not seemed to reflect the evaluation areas which were the foundation of the study: the conceptual awareness, the investigation & evaluation, environmental action skills, and educational application. The results of this study can be used as the basis reference to develop teaching-learning program and in-service programs for professional development of teachers for successful application of environmental education in elementary school classes.
지속 가능한 미래를 위한 교수.학습 프로그램(TLSF Program)과 우리나라 환경 교육과정 비교 분석
오경환(Kyoung-Hwan Oh),민병미(Byeong-Mee Min),손연아(Yeon-A Son),최돈형(Don-Hyung Choi) 한국환경교육학회 2004 環境 敎育 Vol.17 No.1
In this study a comparative analysis is conducted to evaluate TLSF(Teaching and Learning for a Sustainable Future) program, which is a module type environmental education program developed by UNESCO, and the Korean environmental education curriculum.<br/> The Korean environmental curriculum is mainly focused on conceptualization and the matters of fact. As a result, students may not be able to acquire contextualized and synthesized<br/> views on the environmental problems. The Korean environmental curriculum hardly supplies ample variety in the methods of teaching, learning and assessment, or the theories characteristic of the environmental education. Thus it would not make a useful material for teachers to reorganize various materials to be applied in class.<br/> TLSF program would be useful for a teacher to use in the environment education field because it supplies not only many various activities and samples for constructing a proper program but also the theoretical base and examples for education and assessment strategy. Finally, TLSF also offers the theoretical base of the environment education for the assessment, and it makes the best use of feedback from the environment educational field for improving its own quality.<br/> In conclusion, this study can be a meaningful preview for those who are involved in the process of developing of a curriculum, which consists of steps like formulating theories for developing a curriculum, organizing the curriculum contents, activating and evaluating a curriculum.
Won Sun Park,Youn Kyoung Son,Eun A Ko,Seong Woo Choi,Nari Kim,Tae-Hoon Choi,Hyun Joo Youn,Su-Hyun Jo,Da Hye Hong,Jin Han 대한생리학회-대한약리학회 2010 The Korean Journal of Physiology & Pharmacology Vol.14 No.3
We investigated the effects of a hot-water extract of Artemisia iwayomogi, a plant belonging to family Compositae, on cardiac ventricular delayed rectifier K<sup>+</sup> current (I<sub>K</sub>) using the patch clamp technique. The carbohydrate fraction AIP1 dose-dependently increased the heart rate with an apparent EC<sub>50</sub> value of 56.1±5.5Ռg/ml. Application of AIP1 reduced the action potential duration (APD) in concentration-dependent fashion by activating I<sub>K</sub> without significantly altering the resting membrane potential (IC<sub>50</sub> value of APD<sub>50</sub>: 54.80±2.24, IC<sub>50</sub> value of APD<sub>90</sub>: 57.45±3.47Ռg/ml). Based on the results, all experiments were performed with 50Ռg/ml of AIP1. Pre-treatment with the rapidly activating delayed rectifier K<sup>+</sup> current (I<sub>Kr</sub>) inhibitor, E-4031 prolonged APD. However, additional application of AIP1 did not reduce APD. The inhibition of slowly activating delayed rectifier K<sup>+</sup> current (I<sub>Ks</sub>) by chromanol 293B did not change the effect of AIP1. AIP1 did not significantly affect coronary arterial tone or ion channels, even at the highest concentration of AIP1. In summary, AIP1 reduces APD by activating I<sub>Kr</sub> but not I<sub>Ks</sub>. These results suggest that the natural product AIP1 may provide an adjunctive therapy of long QT syndrome.
Park, Won-Sun,Son, Youn-Kyoung,Ko, Eun-A,Choi, Seong-Woo,Kim, Na-Ri,Choi, Tae-Hoon,Youn, Hyun-Joo,Jo, Su-Hyun,Hong, Da-Hye,Han, Jin The Korean Society of Pharmacology 2010 The Korean Journal of Physiology & Pharmacology Vol.14 No.3
We investigated the effects of a hot-water extract of Artemisia iwayomogi, a plant belonging to family Compositae, on cardiac ventricular delayed rectifier $K^+$ current ($I_K$) using the patch clamp technique. The carbohydrate fraction AIP1 dose-dependently increased the heart rate with an apparent $EC_{50}$ value of $56.1{\pm}5.5\;{\mu}g/ml$. Application of AIP1 reduced the action potential duration (APD) in concentration-dependent fashion by activating $I_K$ without significantly altering the resting membrane potential ($IC_{50}$ value of $APD_{50}$: $54.80{\pm}2.24$, $IC_{50}$ value of $APD_{90}$: $57.45{\pm}3.47\;{\mu}g/ml$). Based on the results, all experiments were performed with $50\;{\mu}g/ml$ of AIP1. Pre-treatment with the rapidly activating delayed rectifier $K^+$ current ($I_{Kr}$) inhibitor, E-4031 prolonged APD. However, additional application of AIP1 did not reduce APD. The inhibition of slowly activating delayed rectifier $K^+$ current ($I_{Ks}$) by chromanol 293B did not change the effect of AIP1. AIP1 did not significantly affect coronary arterial tone or ion channels, even at the highest concentration of AIP1. In summary, AIP1 reduces APD by activating $I_{Kr}$ but not $I_{Ks}$. These results suggest that the natural product AIP1 may provide an adjunctive therapy of long QT syndrome.
A GC-MS based metabolic profiling of fermented sausage supplemented with pineapple
Yoo, Seon-A,Park, Seong-Eun,Seo, Seung-Ho,Lee, Hyun-Ji,Lee, Kyoung-In,Son, Hong-Seok 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.6
A GC-MS based metabolomic study was performed to understand metabolic changes during sausage fermentation and to investigate how the incorporation of pineapple affects the metabolic profiles of fermented sausages. Principal component analysis models showed clear metabolic differences among the fermented sausages according to the fermentation periods and the pineapple addition. Increased amounts of amino acids and organic acids except for citric acid, along with decreased levels of sugars were observed after fermentation. Higher levels of sugars and citric acid in the pineapple supplemented sausages dramatically decreased during the early stage of fermentation. The contents of lactic acid, phosphoric acid, succinic acid, ribonic acid, valine, leucine, isoleucine, glycine, threonine, glutamic acid, glucose, and sucrose were significantly increased in the 2% pineapple addition sausages. GC-MS and PCA analytical methods provide a new approach to understand of the metabolic changes in fermented sausages during fermentation.
중환자실 간호사의 의사소통 능력, 소진이 간호업무성과에 미치는 영향
손연정(Son, Youn-Jung),이연아(Lee, Youn A),심경란(Sim, Kyoung Nan),공성숙(Kong, Seong Sook),박영수(Park, Young-Su) 기본간호학회 2013 기본간호학회지 Vol.20 No.3
Purpose: The purpose of this study was to investigate the influence of communication competence and burnout on nursing performance in intensive care units (ICU). Method: The participants were 209 nurses from four university hospitals. Measurements included a socio-demographic and job related survey, communication competence inventory, the Maslach burnout inventory and a nursing performance scale. Data were collected from February 6 to 24, 2012, with a self-report questionnaire. The statistical analyses were performed with SPSS 18.0 software. Results: The mean scores for communication competence, burnout and nursing performance were 50.49, 84.72, and 62.18, respectively. Communication competence (r=.44, p<.001) and burn out (r=-.32, p<.001) were significantly correlated with nursing performance. In the multiple linear regression, factors influencing nursing performance were communication competence, age and burnout. These variables explained about 46% of the total variance of nursing performance. Communication competence (β=.34, p<.001) was the most influential factor. Conclusion: Nurses’ poor communication skills and burnout can influence the occurrences of medical errors in ICU nursing performance. The results suggest that good communication and burnout resolution skills programs should be implemented to improve nursing performance efficiency.
Yeon-A Son(손연아),Soojeong Myeong(명수정),Don-Hyung Choi(최돈형),Byeong-Mee Min(민병미),Kyoung-Ran Kim(김경란) 한국환경교육학회 2009 環境 敎育 Vol.22 No.2
이 연구의 목적은 중등교사들의 환경 관련 수업 전문성을 심층적으로 분석하는데 있다. 연구를 진행하기 위해 먼저, 서울과 경기도의 중등교사 431명을 대상으로 환경수업 전문성에 대한 자기평가를 실시하였다. 자기평가도구로는 Hungerford 등(1994)이 개발한 ‘환경교육자가 갖추어야할 능력 범주 기준’를 활용하였다. 그리고 자기평가를 실시한 중등교사들 중에서 2명의 교사가 진행하는 환경 관련 수업을 실제 참관하여 비디오녹화 분석하였고, 수업교사들과의 면담도 실시하였다. 환경 관련 수업 전문성에 대한 자기평가 결과, ‘생태학적 기초’ 영역이 평균 2.80, 개념적 인식 영역이 평균 2.86, 조사와 평가 영역이 평균 2.83, 환경적 행위기능 영역이 평균 2.94, 교육적 적용 영역이 평균 2.84로 나타났다. 또한, 실제 수업을 분석한 결과, 환경관련 수업을 진행한 교사들은 현대 환경교육에서 강조되고 있는, ‘생태학적 지식을 교수학습에 효과적으로 적용하는 측면’, ‘환경적 의사결정을 위해 개인적 가치를 명료화하는 측면’, ‘환경쟁점과 해결책에 대한 자신의 가치관을 평가하는 측면’, ‘환경적으로 지속가능발전을 위해 시민적 행위기능을 개발하는 측면’에서 다소 미흡한 것으로 나타났다. 이 연구는 중등학교에서 환경관련 수업을 담당하고 있는 교사들을 위한 환경교육 연수프로그램을 개발하고 운영하는데 의미 있는 시사점을 제공해 줄 수 있을 것이다. The objective of this study is to find out the professionalism of secondary school teachers in teaching environmental subjects. This research was conducted using a questionnaire survey of 431 secondary school teachers from 34 schools in Seoul and Gyeonggi Province, Korea. A 5-point Likert scale self-evaluation questionnaire on their professionalism in environmental education was developed based on Hungerford et al.'s (1994) evaluation criteria. Two middle school teachers' classes were observed, and video taping and interviewing were also conducted. The survey analysis revealed that teachers evaluated their professionalism on environmental subjects to be a little above the middle of the scale. The mean values were 2.80 for the foundation level; 2.86 for the conceptual awareness level; 2.84 for the investigation level; 2.94 for the environmental action skills level; and 2.84 for the educational application level. However, class observations revealed that there was some gap between their self-evaluation of professionalism and their actual classroom application. Both classes were not that satisfactory with regard to 'the abilities to communicate and apply ecological concepts', 'the ability to clarify the roles of different value systems for environmental issues and personal values in decision making', 'the ability to clarify their own value system regarding solutions to environmental issues', and 'the ability to apply citizen action skills for solving environmental issues and for sustainable development'. The results provide a basic reference for the improvement of environmental-related education.
Chu, Kyoung Hoon,Al-Hamadani, Yasir A.J.,Park, Chang Min,Lee, Gooyong,Jang, Min,Jang, Am,Her, Namguk,Son, Ahjeong,Yoon, Yeomin Elsevier 2017 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.327 No.-
<P><B>Abstract</B></P> <P>The presence of contaminants of emerging concerns such as endocrine-disrupting compounds (EDCs) and pharmaceuticals/personal-care products (PPCPs) is of concern because they are not completely removed during conventional water and wastewater (WW) treatment processes including coagulation/flocculation/sedimentation/filtration and biological activated sludge process. Recently, ultrasonic (US) treatment has been well-known as an advanced treatment process for the removal of complex inorganic and organic contaminants in water and WW. US treatment has shown substantial advantages, such as cleanliness, safety, energy savings, and negligible or no secondary pollution products. This review provides a summary of recent research on the removal of EDCs and PPCPs by US treatment and also provides information valuable for applications of US treatment in water and WW treatment. The removal of numerous EDCs and PPCPs of different classes was reviewed based on the current literature to (i) address key factors (water quality conditions (pH, temperature, background common ions, and promoters/scavengers), US frequency, power, and reactor type) influencing the sonodegradation of EDCs and PPCPs and their intermediates during US treatment, (ii) evaluate the effects of various catalysts and hybrid processes on sonodegradation, and (iii) discuss EDC and PPCP removal according to their properties. Additionally, areas of future research in US treatment for the removal of EDCs and PPCPs from water are suggested.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Removal of contaminants of emerging concerns in water was reviewed. </LI> <LI> Valuable information was provided for applications of ultrasonication in water treatment. </LI> <LI> Areas of future research for the removal of contaminants of emerging concerns are suggested. </LI> </UL> </P>