• 한국과학교육학회지
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• 제21권5호
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• pp.893-905
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• 2001

Korean students ranked the 3rd out of 32 participating countries in the first cycle of PISA(Programme for International Student Assessment) science field, which assessed 15-years-old students' scientific literacy. PISA developed several variables such as parents' socio-economic status, parents' educational attainment, family wealth, and cultural possession, to investigate the effects of background variables on scientific literacy. On the other hand, motivation and engagement in science study were not given much attention, partly because science was the minor area in the first cycle of PISA. Therefore, PISA Korea developed a series of variables to collect data on students' learning motives and out-of-school activities in science as a national option. The results are as followings. First, Korea was found to be one of the PISA participating countries with the scientific literacy achievement least influenced by parents' socio-economic status, family wealth, and parents' cultural possession. Second, the degree of achievement in scientific literacy according to parents' educational attainment was in a positive correlation, similar to the overall tendency of PISA. Third, the most crucial learning motive for Korean students was their desire to develop scientific thinking abilities or obtain science knowledge. On the other hand, choosing jobs in the field of science or parental expectation was the least important learning motive. In particular, the motive for scientific learning was found to have a positive relationship with the degree of scientific literacy achievement. Therefore, the higher the students achievement, the stronger the motive for scientific learning in order to develop their ability to think scientifically or acquire science knowledge. Fourth, Korean students were shown to participate very little in out-of-school scientific activities other than watching TV programs related to science. Whatever the activities may be, the more actively involved students are in out-of-school scientific activities, the higher their scientific literacy achievement. Fifth, Korean girls were rather passive compared to boys in all areas, including science learning motive and out-of-school scientific activities. The gender difference was especially more pronounced in out-of-school scientific activities with wider gaps in such activities as reading scientific books or articles and visiting science-related web sites.

• 한국비블리아학회지
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• 제26권1호
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• pp.51-76
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• 2015

학교도서관은 다양한 정보자료 및 공간을 제공함으로써 학생들에게는 독서를 통한 창의력 향상 및 인성교육의 기회를 제공하고, 교사에게는 학생의 적성과 능력에 맞는 교수방법을 개발하여 질적으로 우수한 교육실시의 기회를 제공하는데 그 목표를 두고 있다. 학교도서관은 더 이상 도서 보관의 장소가 아니며 학교교육 과정의 중심공간으로서의 역할을 하고 있다. 본 연구는 학교교육 과정의 중심공간인 학교도서관의 주이용자인 학생 및 교사가 이용하기에 가장 적합한 학교도서관의 위치로 운영자인 사서들의 인식을 조사하여 적합한 위치를 제시하고자 하였다. 위 연구의 목적을 달성하기 위해 본 연구에서는 학교도서관 시설에 관한 연구와 학교도서관 활성화에 관한 선행연구를 조사 분석하고 전국 학교도서관 사서를 대상으로 설문조사를 수행하였다. 연구결과, 학교도서관의 '소재건물, 층수, 건물 내 위치, 면적' 등의 요인들은 사서대상 위치 만족도 조사에서 유의미한 수치가 발견되었으며, 사서들의 학교도서관 위치 인식 전체와 높은 상관관계를 보여주었다.

• 아동학회지
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• 제24권1호
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• pp.99-108
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• 2003

가족소득은 어머니의 교육수준과 밀접하게 관련되어 있다는 이전의 많은 연구들에 근거하여, 세대간 교육수준 순환의 가정하에 두 문제점들이 제기되었다 : (a) 어머니의 교육수준이 학령기 아동의 학업성적을 예측할 수 있는가? (b) 만약 예측되어진다면, 교육수준의 역순환은 부모의 경제적 수준상태에 의하여 이러한 영향을 상쇄시킬 수 있는가? 아동발달에 대한 보다 나은 이해를 추구하고자 종단적 데이타를 사용하였다. 즉, 아동이 2살일 때 부모의 경제적 수준상태가 측정되어졌으며, 아동들이 초등학교 1학년이 되었을 때 다시 담임선생에 의한 아동의 학업성적이 측정되어졌다. 이러한 데이타는 Structure equation modelling analyses 통계분석법을 이용하여, 본 연구는 어머니의 교육수준이 아동의 초등학교 1학년 때의 학업성적을 예측한다는 것을 검증하였으며, 이러한 관계는 부모의 경제적 수준상태에 의하여 상쇄될 수 있다는 것이 밝혀졌다. 그러므로, 이 연구는 어머니의 저교육수준에 따른 아동의 열등한 학업성적 순환고리는 부모의 경제적 수준의 영향에 의해 깨어질 수 있다는 가능성을 밝혀주었으며, 아동기 발달의 한 경로를 분명히 제시하였다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2002년도 생물공학의 동향 (X)
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• pp.457-460
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• 2002

In an effort to isolate novel strains expressing a thermostable esterase that hydrolyzed the rac-ketoprofen ethyl ester to ketoprofen in the stereospecific manner, we screened various soils and composts from broad ecological niches in which the activity was expected to be found. Three hundreds of microbial strains were tested to determine their ester-hydrolyzing activity by using an agar plate containing insoluble tributyrin as an indicative substrate, and then further screened by activity on the (R,S)-ketoprofen ethyl ester. Twenty-six strains were screened primarily at high growth and incubation temperature and further compared the ability to ethyl ester-hydrolyzing activity in terms of conversion yield and chiral specificity. Consequently, a strain JYl44 was isolated as a novel strain that produced a (R)-stereospecific esterase with high stability and systematically identified as a Bacillus stearothermophilus JY144. The enzyme indeed stables at a broad range of temperature, upto 65 $^{\circ}C$, and pH ranging from 6.0 to 10.0. The optimal temperature and pH for enzymatic conversion were 50 $^{\circ}C$ and 9.0, respectively. Based on the observations that resulted a poor cell growth, and enzyme expression in wild type strain, we further attempted the gene cloning into a general host Escherichia coli and determined its primary structure, concomitantly resulting a high level expression of the enzyme. The cloned gene had an open reading frame (250 amino acids) with a calculated molecular mass of 27.4 kDa, and its primary structure showed a relative high homology (45-52 %) to the esterases from Streptomyces and Bacillus strains. The recombinant whole cell enzyme could efficiently convert the rac-ketoprofen ethyl ester to (R)-ketoprofen, with optical purity of 99 % and yield of 49 %.

• Journal of Microbiology and Biotechnology
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• 제19권11호
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• pp.1306-1318
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• 2009

The filamentous ascomycete Sclerotinia sclerotiorum is well known for its ability to produce a large variety of hydrolytic enzymes. Two $\alpha$-amylases ScAmy54 and ScAmy43 predicted to play an important role in starch degradation were showed to produce specific oligosaccharides essentially maltotriose that have a considerable commercial interest. Primary structure of the two enzymes was established by N-terminal sequencing, MALDI-TOF masse spectrometry and cDNA cloning. The two proteins have the same N-terminal catalytic domain and ScAmy43 derived from ScAmy54 by truncation of 96 amino acids at the carboxyl-terminal region. Data of genomic analysis suggested that the two enzymes originated from the same $\alpha$-amylase gene and that truncation of ScAmy54 to ScAmy43 occurred probably during S. sclerotiorum cultivation. The structural gene of Scamy54 consisted of 9 exons and 8 introns, containing a single 1,500-bp open reading frame encoding 499 amino acids including a signal peptide of 21 residues. ScAmy54 exhibited high amino acid homology with other liquefying fungal $\alpha$-amylases essentially in the four conserved regions and in the putative catalytic triad. A 3D structure model of ScAmy54 and ScAmy43 was built using the 3-D structure of 2guy from A. niger as template. ScAmy54 is composed by three domains A, B, and C, including the well-known $(\beta/\alpha)_8$ barrel motif in domain A, have a typical structure of $\alpha$-amylase family, whereas ScAmy43 contained only tow domains A and B is the first fungal $\alpha$-amylase described until now with the smallest catalytic domain.

• 대한지구과학교육학회지
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• 제8권1호
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• pp.66-75
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• 2015

This study is to investigate an argumentation level for elementary school students after analysing an argumentation structure about a socio scientific issue(SSI), and inquire a change of the decision-making according to the refutation materials and empathic situation. This data was collected from the semi-structured interview with the 14 students, grade 6th. For this, the first stage is to present the reading materials about the SSI to the students, let them decision-making and make them argue pro and con about the SSI during the interview. After that, facing with the refutation materials against the existing contention and the empathic situation, the change of the decision-making of the students was conducted. After the research, the level of the argumentation of the students was low, and the students who didn't have the background knowledge about the theme made the decisions according to the values, emotions or intuitions of their own. And the decision-making of the students changed more when presented with the refutation materials and the empathic situation, they were difficult to make the decision because of new information and various stances. Besides, they lacked in the ability that recognize the situation related with their own life, just used the fragmentary knowledge associated with value of life respect. Through these result, it is necessary to produce the refutation materials and empathic materials about the SSI to the students for improving the level of argumentation.

• 말소리와 음성과학
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• 제10권2호
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• pp.51-60
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• 2018

This study aims to compare the word decoding skills, phonological awareness (PA), rapid automatized naming (RAN) skills, and letter knowledge of first graders with developmental dyslexia (DD) and those who were typically developing (TD). Eighteen children with DD and eighteen TD children, matched by nonverbal intelligence and discourse ability, participated in the study. Word decoding of Korean language-based reading assessment(Pae et al., 2015) was conducted. Phoneme-grapheme correspondent words were analyzed according to whether the word has meaning, whether the syllable has a final consonant, and the position of the grapheme in the syllable. Letter knowledge asked about the names and sounds of 12 consonants and 6 vowels. The children's PA of word, syllable, body-coda, and phoneme blending was tested. Object and letter RAN was measured in seconds. The decoding difficulty of non-words was more noticeable in the DD group than in the TD one. The TD children read the syllable initial and syllable final position with 99% correctness. Children with DD read with 80% and 82% correctness, respectively. In addition, the DD group had more difficulty in decoding words with two patchims when compared with the TD one. The DD group read only 57% of words with two patchims correctly, while the TD one read 91% correctly. There were significant differences in body-coda PA, phoneme level PA, letter RAN, object RAN, and letter-sound knowledge between the two groups. This study confirms the existence of Korean developmental dyslexics, and the urgent need for the inclusion of a Korean-specific phonics approach in the education system.

• 디지털융복합연구
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• 제16권1호
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• pp.343-350
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• 2018

이 연구의 목적은 디지털문화에 잠재한 폐해들 중 하나인 지각의 자동화에 대한 대응전략으로서 지각의 자동화 현상에 대한 시의 지각의 낯설게 하기 효과, 시의 치료적 기능과 시적 장치로서 은유 등을 포함한 시의 효용성을 고찰하는 것이다. 따라서 이 연구는 디지털 문화의 속성과 그 폐해, 특히 디지털문화의 부정적인 영향인 지각의 자동화현상의 원인과 결과를 분석하고 시는 이에 대한 해결책으로서 유용한 도구가 될 수 있는지를 분석하였다. 디지털시대의 급격한 기술혁신의 결과 우리는 다양한 경험과 많은 기회를 얻게 되고 장밋빛 미래를 전망한다. 그러나 우리는 인공지능과 디지털기기에 대한 무의식적이고 습관적인 의존으로 지각의 자동화의 위험에 빠질 수 있다. 시는 사물들을 낯설게 하며 형식을 까다롭게 하여 지각의 자동화를 막고 상상력, 문학능력과 창의성을 증진시킨다. 또한 시의 치료적 기능은 새로운 경험을 하며 공감능력을 키우게 하고 때로는 상처 받은 마음에 위안과 평화를 주어 정신건강을 회복하게 한다. 전통적인 시뿐만 아니라 디지털 융합기술로 탄생한 하이퍼텍스트시 등을 포함한 다양한 형태의 다지털시에 대해 앞으로 체계적이고 심도 있는 분석과 연구가 필요하다.

• 한국도서관정보학회지
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• 제51권3호
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• pp.223-250
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• 2020

본 연구의 목적은 미디어정보 리터러시 개념을 규정하고 교육내용을 개발하는 데 있다. 연구 목적을 달성하기 위하여 문헌 분석과 현장 전문가 대상 인터뷰, 사서교사 대상 설문조사가 수행되었다. 분석 결과, 현장 전문가들은 미디어를 정보를 활용하는 도구로 인식하였으며 정보문제해결능력과 독해능력, 미디어의 기능, 사례 활동, 정의적 영역을 미디어정보 리터러시의 교육의 영역으로 인식하였다. 사서교사들은 미디어정보 리터러시의 역량과 교육내용에 있어서 정보 리터러시와 미디어 리터러시의 역량과 교육내용을 디지털 리터러시의 역량과 교육내용에 비해 중요하게 인식하고 있었다. 연구 결과로 미디어정보 리터러시의 개념을 리터러시와 미디어 리터러시, 정보 리터러시, 디지털 리터러시가 중복된 영역으로 지식, 기능, 태도가 포함된 개념으로 정의하였다. 그리고 민주사회에 참여, 미디어 도구와 콘텐츠의 종류, 인간의 기본권, 기능, 디지털 도구 조작, 정보 문제 해결 과정이 맥락에 따라 결합되어 응용될 수 있도록 미디어정보 리터러시의 교육내용을 개발하였다.

• 대한소아치과학회지
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• 제25권3호
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• pp.576-582
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• 1998

The purpose of the study was to determine the ability of the caries activity test, 'Cariostat' to identify preschool children with dental caries. The subjects of this study were 76 children of 3 to 5 years of age. Oral examination was carried out to assess the caries experience using a mirror and explorer. In all subjects buccal plaque samples were obtained, incubated, and scored as the manufacturer's instructions for the Cariostat test. Statistical analyses were used with the Crosstabulation. The test group exhibited mean dft index 5.21, while 27.63% of subjects were caries free and had no restorations. The sensitivity of the Cariostat test was found to be 98.8% while the specificity was found to be 19.05% The results showed that caries activity measured by visual reading was highly significant to the Cariostat score and dft index(P<0.001). The Cariostat method has indicated the future possible occurrence of caries. The use of this method is meant to require in the caries prevention program.