멀티미디어를 활용한 극놀이가 유아의 신체표현력, 언어표현력, 또래놀이행동에 미치는 효과

백은주(Eunjoo, Baik),주혜영(Hyeyong, Joo) 한국어린이미디어학회 2021 어린이미디어연구 Vol.20 No.1

본 연구는 멀티미디어를 활용한 극놀이가 유아의 신체표현력, 언어표현력 그리고 또래 놀이행동에 미치는 영향을 보기 위한 것이다. 이를 위해 K시 H어린이집의 5세반 2개 학급 36명 유아를 대상으로 15주 동안 멀티미디어를 활용하여 극놀이를 실시하였다. 멀티미디어를 활용한 극놀이의 효과를 검증한 결과는 다음과 같다. 첫째, 멀티미디어를 활용한 극놀이가 유아의 신체표현력 전체 및 세부항목 모두에 긍정적인 효과를 나타내었다. 둘째, 멀티미디어를 활용한 극놀이는 유아의 언어표현력 향상에 긍정적인 효과가 있었으며, 그림보고 이야기 꾸미기의 세부항목에 대하여 유의미한 효과가 나타났다. 셋째, 멀티미디어를 활용한 극놀이는 유아의 또래놀이행동 세부항목 중 놀이방해, 놀이단절이 감소되는 것에 효과를 나타내었다. 멀티미디어를 활용한 극놀이가 유아들의 신체표현력, 언어표현력, 또래 놀이행동에 긍정적인 효과가 있다는 본 연구결과를 토대로 여러 다른 영역의 놀이에서 멀티미디어를 활용하는 방안에 대해 강구해 볼 수 있을 것으로 사료된다. This study is to examine the effects of dramatic play using multimedia on children’s physical expressions, language expressions play behaviors with their peers. To this end, a dramatic play was conducted using multimedia over the course of 15 weeks for 36 children in two 5-year-old classes of H daycare center in K City. The results of the effect of dramatic play using multimedia are as follows. First, dramatic play using multimedia had a positive effect on all of the children’s physical expression abilities. Second, dramatic play using multimedia had a positive effect on improved the children’s language expression abilities, and had a significant effect on detailed items of picture reporting and story decorating. Third, regarding children’s peer play behavior, dramatic play using multimedia reduced play obstruction and play interruption. Based on the results of this study, that dramatic play using multimedia has a positive effect on children’s physical expression, language expression, and peer play behavior, it is expected that a plan to use multimedia in various fields of play can be devised.

퀘쳐스 전처리와 질량분석기를 이용한 논과 밭 토양 중 463종 다성분 분석법 정립 및 검증

백은주 ( Eunjoo Baek ),박혜진 ( Hyejin Park ),임채욱 ( Chaiuk Lim ),신병곤 ( Byeung Gon Shin ),조순길 ( Soon-kil Cho ),홍성희 ( Sung-hee Hong ) 한국환경농학회 2022 한국환경농학회 학술대회집 Vol.2022 No.-

Residual pesticides remaining in the soil may be absorbed and transferred to crops, causing unintentional contamination of agricultural products. So, proper management of the cultivation environment such as soils must be preceded. It is necessary to establish an analytical method to accurately and reliably analyze residual pesticides in paddy and unpland soils. In this study, a QuEChERS method for simultaneous determination of 463 pesticide residues in paddy and upland soils was developed and validated. Soil samples were extracted using a modified QuEChERS.. And then targeted pesticides were purified following the dispersive solid phase extraction(d-SPE, PSA) cleanup method and detected by liquid and gas chromatography-tandem mass spectrometry(LC-MS/MS and GC-MS/MS). To evaluate performance of the method, validation experiments were carried out on paddy and unpland soils at three spiking levels (0.01, 0.05, 0.1 mg kg^-1). The recoveries of the paddy soil ranged between 70.15 and 120.0% with associated relative standard deviations(RSD) less than 22% for the 445 pesticides. The recoveries of the unpland soil ranged between 70.62 and 115.5% with associated relative standard deviations(RSD) less than 22% for the 449 pesticides. The limit of quantification (LOQ) of methods were below 0.01 mg/kg^-1, and the coefficient of determination (R²) of matrix-matched standards were > 0.997. In order for the developed method to be certified as an analytical method determined by the head of NAQs, cross-validation of the three labs is in progress.

퀘쳐스 전처리와 LC-MS/MS를 이용한 Thiodicarb와 Methomyl의 정량

박혜진 ( Hyejin Park ),임채욱 ( Chaiuk Lim ),백은주 ( Eunjoo Baek ),윤지민 ( Jimin Yoon ),이주령 ( Juryeong Lee ),신병곤 ( Byeung Gon Shin ),조순길 ( Soon-kil Cho ) 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-

Both methomyl and thiodicarb belong to the group of oxime carbamate insecticides that acts by inhibiting acetylcholinesterase activity. The residue definition set in MRL regulation for all agricultural commodities is the sum of methomyl and thiodicarb, expressed as methomyl. Thiodicarb consists essentially of two methomyl moieties joined through their amino nitrogen by sulfur. Stoichiometry has to be applied to the calculus of the concentration, and the conversion factor of thiodicarb has to be multiplied by two. A Liquid chromatography tandem mass spectrometry was used for the simultaneous determination of thiodicarb and its degradation product methomyl as a total residue of thiodicarb in brown rice. Thiodicarb is known to degraded during analysis; therefore, a through investigation was carried out, revealing that thiodicarb degrades to methomyl immediately after spiking into a matrix of grain product. Two compounds were extracted from brown rice with acetonitrile containing 1% formic acid and the use of partitioning salts composed of NaCl and MgSO₄ based on QuEChERS method. Recovery experiments were conducted on brown rice. Main performance parameters investigated were linearity, recovery, relative standard deviation(RSD), limit of detection, and limit of quantitation. The recoveries were within 72.2∼96.0% with relative standard deviation (RSD) of 0.5∼2.3% and the limit of quantification (LOQ) of methods were below 0.01 mg/kg, and the coefficient of determination (R²) of matrix-matched standards were > 0.997.

예술 감상을 통한 과학 관련 사회문제 공감 측정도구 개발 및 타당화

정찬미(Jung, Chanmi),최규리(Choi, Kyoulee),백은주(Baek, Eunjoo),유정숙(Yoo, Jungsook) 이화여자대학교 교과교육연구소 2020 교과교육학연구 Vol.24 No.6

본 연구의 목적은 사회문제기반 과학-예술 융합교육의 효과성 측정을 위하여 예술 감상을 통한 과학 관련 사회문제 공감 측정 도구를 개발하여 타당화하는데 있다. 이를 위해 먼저 선행연구에서 밝혀진 사회문제기반 과학-예술 융합교육 콘텐츠 설계 요소를 바탕으로 문헌고찰을 통해 이론적 구인을 예술적 관찰, 과학적 상상, 사회적 공감으로 정의하고 7개의 하위 요인을 도출하였다. 이 7개 영역을 측정할 수 있는 초기 측정도구(28문항)를 개발하여 온라인 설문조사를 통한 본 검사를 실시하였다. 수합된 응답 결과 중 289개의 활용 가능한 자료가 최종 분석에 활용되었다. 이 자료는 탐색적 요인분석, 신뢰도 분석, 확인적 요인분석의 방법으로 분석되었다. 탐색적 요인 분석을 통하여 부적합한 2개의 문항을 제거하고 관찰표현, 감상 태도, 상상, 공감 등 4개 요인으로 구성된 26문항의 측정도구를 최종 확정했으며, 최종 척도의 신뢰도는 양호했다(Cronbach’s α=.943). 확인적 요인 분석 결과, 측정 모형의 적합도는 양호한 것으로 나타났으며(CFI=.890, TLI=.878, RMSEA=.076), 구인 타당도 검증 결과 개념 신뢰도, 수렴 타당도, 판별 타당도 모두 양호한 것으로 확인되었다. 개발된 본 측정 도구는 공감 향상을 목표로 하는 사회문제기반 과학-예술 융합교육 프로그램 및 콘텐츠의 설계, 적용, 효과 파악 및 환류를 통한 개선의 과정에서 광범위하게 활용될 수 있을 것으로 기대된다. The purpose of this study is to develop and validate an empathy scale of science-related social issue through art appreciation to measure the effectiveness of social problem-based science-art convergence education. To this end, first, based on the design elements of science-art convergence education content with social issues identified in previous studies, the theoretical factors were defined as artistic observation, scientific imagination, and social empathy, and seven sub-factors were derived through literature review. An initial scale (28 items) to measure these seven areas was developed and with the scale, test was conducted through an online survey. Of the collected response results, 289 available data were used for the final analysis. This data was analyzed by exploratory factor analysis(EFA), reliability analysis, and confirmatory factor analysis(CFA). Through EFA, two unsuitable items were removed, and a measurement tool was finalized with 26 items consisting of four factors of observational expression, attitude of appreciation, imagination, and empathy. The finalized scale showed good reliability (Cronbach’s α=.943). The result of the CFA showed the goodness of fit of the measurement model was good (CFI=.890, TLI=.878, RMSEA=.076), and confirmed that the convergence validity constituting the construct validity and the verification of concept reliability were also good. The developed measurement tool is expected to be widely used in the process of designing, applying, understanding the effects, and improving the social issues-based science-art convergence education program and contents aiming empathy improvement.

퀘쳐스 전처리와 질량분석기를 이용한 과일봉지와 버섯배지 중 463종 다성분 분석법 정립 및 검증

박혜진 ( Hyejin Park ),임채욱 ( Chaiuk Lim ),백은주 ( Eunjoo Baek ),신병곤 ( Byeung Gon Shin ),조순길 ( Soon-kil Cho ),홍성희 ( Sung-hee Hong ) 한국환경농학회 2022 한국환경농학회 학술대회집 Vol.2022 No.-

For the safety management of agricultural products, proper management of the cultivation environment such as agricultural materials(e.g. fruit bags, mushroom culture media, and so on), soils, and agricultural water must be preceded. It is necessary to establish analytical method to accurately and reliably analyze residual pesticides in the cultivation environment. In this study, a QuEChERS method for simultaneous determination of 463 pesticide residues in fruit bags and mushroom culture media was developed and validated. The samples were initially extracted with acetonitrile using of partitioning salts composed trisodiumcitrate dihydrate, disodium hydrogencitrate sesquinhydrate, NaCl, and MgSO₄. And then targeted pesticides were purified following the dispersive solid phase extraction(d-SPE, PSA) cleanup method and detected by liquid and gas chromatography-tandem mass spectrometry(LC-MS/MS and GC-MS/MS). To evaluate performance of the method, validation experiments were carried out on fruit bags and mushroom culture media at three spiking levels (0.01, 0.05, 0.1 mg kg^-1). The recoveries of the fruit bags ranged between 70.3 and 120.0% with associated relative standard deviations(RSD) less than 22% for the 458 pesticides. The recoveries of the mushroom culture media ranged between 70.5 and 120.0% with associated relative standard deviations(RSD) less than 22% for the 453 pesticides. The limit of quantification (LOQ) of methods were below 0.01 mg/kg^-1, and the coefficient of determination (R²) of matrix-matched standards were > 0.997. In order for the developed method to be certified as an analytical method determined by the head of NAQs, cross-validation of the three labs is in progress.

질량분석기를 이용한 농산물 중의 Glufosinate의 정량

임채욱 ( Chaiuk Lim ),박혜진 ( Hyejin Park ),백은주 ( Eunjoo Baek ),신병곤 ( Byeung Gon Shin ),조순길 ( Soon-kil Cho ) 한국환경농학회 2022 한국환경농학회 학술대회집 Vol.2022 No.-

Glufosinate is phosphorus-containing ammonium type that is widely used as crop protection for food crops and also in oil palm planations. Due to zwitterionic nature, previously reported methods for determination of glufosinate usually require derivatization. A fast and simple quantitative method for analysis of glufosinate in agricultural products has been developed. Glufosinate was determined by liquid chromatography tandem mass spectrometry and was extracted from matrices with methanol containing 1% formic acid on quick polar pesticides (QuPPe) method. Recovery experiments were conducted on pepper, brown rice and mandarin. Key performance parameters investigated were linearity, recovery, relative standard deviation (RSD), limit of detection, and limit of quantitation. The recoveries were within 76.9∼100.6% with relative standard deviation (RSD) of 2.5∼16.8% and the limit of quantification (LOQ) of methods were below 0.01 mg/kg, and the coefficient of determination (R²) of matrix-matched standards were > 0.995. The results obtained demonstrated that the method has achieved the requirements of the criteria for acceptance of single laboratory method validation.

우리나라 유치원의 지속가능발전교육 관련 실태 조사

지옥정(Ji, Okjong),허미화(Huh, Mihwa),백은주(Baik, Eunjoo),정미라(Chung, Mira) 한국영유아보육학회 2015 한국영유아보육학 Vol.0 No.90

본 연구는 우리나라 유치원의 ‘지속가능발전교육’ 관련 실태를 조사하고자 수행되었다. 이를 위해 전국 유치원에서 지역별 3%를 집락표본 추출한 후, 유치원별 만 4세 담임교사 1명이 응답하는 설문조사를 실시하였다. 총 370부의 설문지를 분석한 결과, 먼저 운영관리의 경우 "지속가능발전교육"을 효율적으로 실시하기에는 시설.설비 및 운영방침이 취약하였으며, 환경관리규정조차 전체의 1/3 정도의 유치원만 보유하고 있는 것으로 나타났다. 다음으로, 교육내용 및 실시정도와 관련하여 보면, "지속가능발전교육"의 실시비율은 자연교육이나 환경교육에 비해 현저하게 낮은 것으로 나타났다. 마지막으로, "지속가능발전교육"에 대한 교사 재교육과 관련해서는 그 기회나 정도가 모두 낮은 것으로 나타났다. 이러한 결과에 근거하여, 유치원에서 바람직한 "지속가능발전교육"을 실시하기 위해서는 우선 유치원의 물리적 환경, 운영방침 등 기반 조건이 개선되어야 하며, "지속가능발전교육" 실시를 가능하게 하기 위해서 교사 재교육 기회가 확대되어야 함을 제안하였다. This research has been performed in order to check Korea kindergartens" state in relation to education for sustainable development. Our research methodology is to let a teacher of each kindergarten for four-aged children answer the questionnaire after selecting 3% regional intensive samples from all country-wide kindergartens. As the result of analyzing 370 questionnaires, it is found that, in case of operational management, kindergartens have weaknesses in facilities, equipment, and operation policy in executing an efficient education for sustainable development (ESD) and also found that only one third of all kindergartens own environmental management rules. Next, compared with nature education or environmental education, a conspicuously low rate of ESD had been conducted if education contents and an extent of its execution are reviewed. Last, an opportunity or extent of continuing education on teachers, in relation to ESD, turned out to be low. Based upon this result, in order to perform a desirable EDS, first, basic conditions such as physical environment and operation policy of kindergartens must be improved. And it is simultaneously proposed that an opportunity of continuing education be extensively given to teachers in order to make an execution of EDS possible.

질량분석기를 이용한 농산물 중의 Acetochlor 대사산물, EMA와 HEMA의 정량

임채욱 ( Chaiuk Lim ),박혜진 ( Hyejin Park ),백은주 ( Eunjoo Baek ),윤지민 ( Jimin Yoon ),이주령 ( Juryeong Lee ),신병곤 ( Byeung Gon Shin ),조순길 ( Soon-kil Cho ) 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-

Acetochlor is a selective herbicide that controls a broad spectrum of annual grasses, sedge, and broadleaf weeds primarily in corn. MRLs are established for the combined residues of acetochlor and its ethyl methyl aniline-(EMA) and hydroxyethyl methyl aniline-(HEMA) producing metabolites, expressed as acetochlor equivalents. A fast and simple quantitative method for analysis of metabolites of acetochlor, EMA and HEMA in agricultural products has been developed. EMA was determined by gas chromatography tandem mass spectrometry and HEMA by liquid chromatography tandem mass spectrometry. Two compounds were extracted from matrices with acetonitrile containing 1% formic acid and the use of partitioning salts composed of NaCl and MgSO₄ based on QuEChERS method. Recovery experiments were conducted on pepper, brown rice and mandarin. Key performance parameters investigated were linearity, recovery, relative standard deviation(RSD), limit of detection, and limit of quantitation. The recoveries were within 70.6∼106.8% with relative standard deviation (RSD) of 0.7∼7.3% and the limit of quantification (LOQ) of methods were below 0.01 mg/kg, and the correlation coefficient (r²) of matrix-matched standards were > 0.995.

문제 중심 학습(PBL)을 위한 문제개발 절차 연구 : 초등과학 교과를 중심으로

조연순,이혜주,백은주,임현화 한국교육과정학회 2003 교육과정연구 Vol.21 No.3

본 연구는 문제중심학습의 교실수업 적용을 용이하게 하기 위한 문제개발의 중요성을 인식하여 문제개발 과정을 구체화하는 것을 목적으로 하였다. 이러한 목적을 위하여 문제중심학습에서 문제개발은 교육과정적 측면에서 ‘무엇을 학습의 내용으로 끌어들일 것인가’를 계획하는 단계로 규정하였다. 이후 문헌연구를 통해 ‘문제’의 인지심리학적, 교육학적 함의를 찾아 문제의 본질을 규명하였다. 또한 문헌연구와 현장교사와의 협의를 통해 문제개발에 요구되는 요소를 추출하여 다음과 같은 일반적인 절차를 설정하였다. 첫째, 현행 교육과정 목표와 내용을 고려한다. 둘째, 학습자의 사전지식과 호기심 등의 특성을 파악한다. 셋째, 문제를 발견, 선정하고, 적절성을 판단하기 위해 문제지도를 그린다. 넷째, 학습자에게 주어질 역할과 상황을 설정한다. 다섯째, 문제 제시의 형태와 시나리오를 작성하고 검토한다. 이와 같이 선정한 절차에 따라 초등학교 4,5,6학년 과학교과의 네 단원을 개발하였으나 본고에서는 우리나라 7차 교육과정의 초등학교 6학년 과학 ‘일기예보’ 단원을 중심으로 문제중심학습의 문제 개발 단계를 제시하였으며 각 단계에서 현실적으로 고려하여야 하는 것들이 무엇인지에 대해 논의하였다. The purpose of this study is to identify the importance of the problem design and to investigate the procedure of problem design for implementing the problem-based learning in a classroom. Problem design can be an initial step in problem-based learning because problem design means that the teacher needs to think about something suitable to learn through problem-based learning. In other words, problem-based learning is rather considered as a curriculum than an instruction strategy. In order to design problems the whole process of problem-based learning was established first. The nature of problem was investigated through the search of cognitive psychological and pedagogical literatures on "problems". As the result, five factors of problem design were drawn and general procedure was established as follows. First, the present curriculum needs to be considered. Second, the learners' characteristics such as comprehensions, misconceptions, curiosities etc. need to be understood. Third, the teacher needs to find an idea for the problem. Then the teacher needs to draw a possibility map and a curriculum map. Also he(she) needs to check the relevance with curriculum and judges propriety of that idea. Fourth, a role and a situation need to be identified. Fifth, the type of problem presentation should be selected and a scenario should be made and proved. According to the above procedure, four science problems for 4th, 5th, 6th grades were developed. In this paper, however, 'Typhoon" problem for 'weather forecast' unit of the 6th grade based on the 7th national science curriculum is described in detail.