• 한국과학교육학회지
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• 제28권8호
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• pp.860-869
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• 2008

본 연구의 목적은 과학영재들의 과학탐구문제발견 능력을 신장시키기 위한 지도방향을 제안하는 것이다. 이를 위해서 낮게 구조화된 탐구 상황과 높게 구조화된 탐구 상황에서의 문제발견 활동 중에 과학영재들이 생성한 과학탐구문제의 특성에 대해 심층적인 분석을 하였다. 분석한 결과, 탐구목적에 따른 유형별 빈도는 탐구 상황에 따라 차이를 보였으나, 두 활동에서 생성된 대부분의 탐구문제들은 7개의 동일한 유형(측정, 방법, 원인, 가능성, 무엇, 비교, 관계)으로 나타났다. 탐구문제에 언급된 과학적 개념의 빈도수는 높게 구조화된 탐구 상황에서의 문제발견 활동(PFAWIS)이 낮게 구조화된 탐구 상황에서의 문제발견 활동(PFAIIS)보다 더 많았으나, 과학적 개념의 다양성은 PFAIIS가 PFAWIS보다 더 큰 것으로 나타났다. 따라서 교사는 첫째, 낮게 구조화된 과학적 탐구 상황에서의 과학문제발견 활동의 기회를 자주 부여해야한다. 둘째, 일반 과학 실험 중에도 새로운 탐구문제를 발견할 수 있음을 강조하고, 실험 중에 생성한 탐구문제들에 대해 토의하는 시간을 자주 가질 필요가 있다. 셋째, 과학탐구문제를 최소한 7개 이상의 유형별로 생성할 수 있도록 지도하도록 한다.

• 분석과학
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• 제20권3호
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• pp.219-226
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• 2007

유리 같은 미세 증거물은 전이(transfer)의 결과로서 법과학 실험실에 자주 제시되는 증거물의 일종이다. 이들 시료에서 미량 원소 분석의 반복성과 재현성을 검토하였다. 미세 증거물의 유출원을 규명하기 위하여 LA-ICP-MS를 사용하여 분산 분석이 이루어졌다. 짝지음비교가 모든 시료에 대하여 이루어졌고 각 시료는 이동식별을 위하여 총 [n(n-1)/2] (n :시료의 수) 쌍이 비교 되었다. 이번 실험의 목적은 법과학 시료의 다원소분석에 대한 LA-ICP-MS의 이용 가능성을 검토하는 것이다. 유리의 경우, 2개의 제조 공장으로 부터의 12개 시료를 수집하여 분석에 사용하였다. 유리에서 미량원소 분석용 표준품 NIST 612를 사용하여 31개 원소를 분석하고 분산분석(ANOVA)이 수행되었다. 원소들은 정밀도와 시료간 분산값을 고려 하여 4개의 그룹으로 나뉘어 졌다. 11개의 원소(209Bi, 90Zr, 121Sb, 178Hf, 59Co, 238U, 208Pb, 140Ce, 118Sn, 49Ti, 137Ba)가 선택 되었고 137Ba 만으로 66개의 가능한 pair들 중 6개를 구별(p<0.05)하지 못하였으나, 49Ti과 137Ba의 두 원소를 사용할 경우 모든 시료들이 구별 가능 한 것으로 나타났다(p<0.05). 결론적으로 LA-ICP-MS에 의한 다원소 분석은 법과학 시료의 이동 식별에 잠재력있는 분석기법이라 하겠다.

• 영재교육연구
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• 제21권1호
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• pp.163-174
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• 2011

과학기술이 가치판단을 요구하는 복잡한 문제로 발전해감에 따라 과학영재를 위한 가치판단 능력을 기를 수 있는 프로그램을 구성하고자 본 연구에서는 먼저 과학영재들의 과학기술에 대한 견해가 어떤 형식으로 주장되고 있는지를 분석하였다. 본 연구는 서울소재 대학부설 과학영재원의 60명을 대상으로 글쓰기와 이메일을 통해 자료를 수집하였다. 분석결과, 과학영재 학생들의 주장형식 중 29%가 자신의 주장에 유리한 측면만을 언급하는 '일방적 주장' 형식을 취하였고, 양쪽 측면을 모두 언급한 사례 중에서도 10%만이 '반박'의 주장형식을 사용하였다. 또한 '대안 제시', '과학기술에 대한 긍정적 기대 부여'에서는 과학영재 학생들의 과학기술에 대한 긍정적 인식이 드러났다. 본 연구결과를 바탕으로 과학영재를 위해 구성될 논증교육 프로그램은 체계적인 논증지식을 지도할 뿐 아니라 과학기술의 한계와 역할을 인식할 수 있도록 돕고 과학기술의 긍정적 효과와 부정적 효과 사이에서 균형적 판단을 내릴 수 있도록 안내할 수 있어야 할 것이다.

• 산업경영시스템학회지
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• 제43권2호
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• pp.25-32
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• 2020

Data on patent and scientific paper is considered as a useful information source for analyzing technological information and has been widely utilized. Technology big data is analyzed in various ways to identify the latest technological trends and predict future promising technologies. Clustering is one of the ways to discover new features by creating groups from technology big data. Patent includes refined bibliographic information such as patent classification code whereas scientific paper does not have appropriate bibliographic information for clustering. This research proposes a new approach for clustering data of scientific paper by utilizing reference titles in each scientific paper. In this approach, the reference titles are considered as textual information because each reference consists of the title of the paper that represents the core content of the paper. We collected the scientific paper data, extracted the title of the reference, and conducted clustering by measuring the text-based similarity. The results from the proposed approach are compared with the results using existing methodologies that one is the approach utilizing textual information from titles and abstracts and the other one is a citation-based approach. The suggested approach in this paper shows statistically significant difference compared to the existing approaches and it shows better clustering performance. The proposed approach will be considered as a useful method for clustering scientific papers.

• 한국초등과학교육학회지:초등과학교육
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• 제28권2호
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• pp.121-131
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• 2009

In this study, we investigated the elementary school students' perceptions toward scientific and/or technological professions in the views of accuracy, complexity, and diversity, and compared them by the students' grades and their science-related career aspiration levels. We also studied the relationships among the students' perceptions toward scientific and/or technological professions and their cognitive (science achievement), affective (enjoyment of science lessons, attitude to scientific inquiry, self-efficacy), and behavioral (participation in science-related activity) characteristics. The subjects were 369 students of 4th and 6th grades at three elementary schools in Seoul. The results revealed that the students were relatively well aware of what works and professions in science and/or technology were, but they did not have good understanding of them in the views of complexity and diversity. The 6th graders had better perceptions toward science and/or technological professions than 4th graders, although they showed the lower scores of attitude to scientific inquiry. Moreover, the higher science-related career aspirations were, the higher scores in all tests of the perceptions and the personal characteristics were. The students' perceptions toward scientific and/or technological professions were found to have relationships with their cognitive, affective, and behavioral characteristics. The multiple regression analysis of the personal characteristics on the perceptions toward scientific and/or technological professions indicated that science-related activity, science achievement, and self-efficacy were significant predictors. Educational implications are discussed.

• 한국초등과학교육학회지:초등과학교육
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• 제27권1호
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• pp.75-82
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• 2008

The purpose of this study was to examine the consistency and balance of learning objectives of units and instructional units according to grades and educational domains. Educational domains were cognitive(scientific knowledge), scientific inquiry(inquiry process skills), affective(scientific attitude), and science-technology-society(STS). Learning objectives of life field of the 7th elementary science curricular teaching guidebooks were analysed. Scientific inquiry process skill objectives(43.5%) were most dominant in units, but cognitive objectives(53.9%) were most dominant in instructional units. STS objectives were most recessive in both units and instructional units. Especially, objectives of units and instructional units were shown no consistency by grade. The results of this study suggested that the textbooks and teaching guidebooks should be developed consistently by considering learning activities and contents on the basis of background and properties of science curriculum.

• 한국초등과학교육학회지:초등과학교육
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• 제20권1호
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• pp.1-7
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• 2001

The purpose of this study is to examine the learner's variables affecting on scientific thinking and scientific process skills. To study this purpose, through the procedure study, the learner's variables were divided into cognitive variable, ego variable, and affective variable, then the questionaire survey through the reconstruction of standardization instrument was made over 120 elementary school fifth grade student in Seoul, Anyang, and Pajoo. The results of this study were as follows: 1) The learner's variables affecting on scientific thinking were cognitive variable and for female students, also affect affective variable. The subordinated catagories of statistically significant degree of explanation were achievement motivation, cognitive level, and cognitive style and another statistically significant correlation were meta-cognition, self regulated learning, self efficacy, and muliple intelligence. 2) The learner's variables affecting on science process skills were cognitive variable and affective variable. And the subordinated catagories of statistically significant degree of explanation were achievement motivation, and cognitive level. And another statistically significant correlation were meta-cognition, self regulated loaming, self efficacy, multiple intelligence, and attribution.

• 한국과학교육학회지
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• 제15권4호
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• pp.452-458
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• 1995

Science textbooks are very important materials in order to know elementary science learning in Japan and Korea. In this research the 5th grade science textbooks in Japan and Korea are analyzed by an analyzing category. The analyzing category is consisted of knowledge and scientific inquiry. Knowledge is divided by fact, concept, and rule. Scientific inquiry is divided by problem cognition, variable control, experiment planning, observing, measuring, categorizing, inferring, data transformation, predicting, correlation, cause and effect, result, communication, which are 13 subcategories. Analyzing methods are counting the frequency of each subcategory and tabulating the data. The results of this study are: 1. The frequency of scientific inquiry appeared in Korean 5th grade science textbooks is three times more than that in Japanese textbooks. 2. In scientific inquiry category, Japanese science textbooks emphasized observing, predicting, measuring and problem cognition; Korean science textbooks emphasized experiment planning, observing and problem cognition. 3. In knowledge category, fact subcategory is mostly emphasized in both countries.

• 대한지구과학교육학회지
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• 제3권3호
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• pp.248-256
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• 2010

This study analyzed National Assessment of Educational Achievement items surveying to sixth-year student in elementary school utilizing three dimentional scientific assessment framework. Study's findings are as following. Science contents territory of national level study achievements estimation were set a problem energy, substance, life, earth relatively evenly. Action territory was set a problem most 'Comprehension' territory. In the case of science situation area, 'Purity scientific situation' among 5 category appeared the most.

• 대한지구과학교육학회지
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• 제6권2호
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• pp.136-144
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• 2013

The purpose of this study is to examine the effects of creative thinking activities and scientific attitude through the use of storytelling in the STEAM program for elementary students. For the purpose of this study, a teaching plan and worksheet for students using storytelling in STEAM was developed and applied. The results of this study are as follows: First, the change in students' creative thinking activities by applying the STEAM program using storytelling has statistically meaningful difference (p<.05). Second, the improvement in the scientific attitude score has statistically meaningful difference(p<.05). Third, according to the analysis of a questionnaire used to evaluate the program, students had a positive perception of the STEAM program and gained higher level of satisfaction about the lesson. Therefore, using storytelling STEAM program applied in this study might be useful to improve creative thinking activities, and can be expected to improve scientific attitude and should be widely applied to gifted education.