• 한국과학교육학회지
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• 제25권5호
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• pp.563-570
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• 2005

이 연구는 중학생들의 과학 지식의 본성에 대한 이해와 개념 이해 및 학습 젼략 사이의 관계를 조사하였다. 인천 지역의 중학교 1학년 162명을 대상으로 과학 지식의 본성 검사와 학습 전략 검사를 실시하였다. 밀도에 대한 컴퓨터 보조 수업 후 개념 검사를 실시했다. 연구 결과, 학생들의 개념 이해와 심층적 및 피상적 학습 전략은 과학 지식의 본성에 대한 이해와 유의미한 상관이 있었다. 학생들의 복합적인 학습 전략의 유형을 확인하기 위해 군집분석을 실시하였다. 그 결과, '심층적 전략 점수는 높고, 피상적 전략 점수는 낮은 집단(군집 1)', '심층적 전략 점수는 낮고, 피상적 전략 점수는 높은 집단(군집 2)', '심층적, 피상적 전략 점수가 모두 높은 집단(군집 3)'으로 구분 되었다. 일원 변량 분석 결과, 과학 지식의 본성 검사와 개념 검사 모두에서 군집 3의 점수가 다른 군집들 보다 유의미하게 높았다. 또한 개념 검사에서는 군집1이 군집2에 비해 보다 높은 성적을 보였다. 이에 대한 교육학적 함의를 논의하였다.

• 한국과학교육학회지
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• 제38권1호
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• pp.27-42
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• 2018

본 연구는 기술의 본성(NOT: Nature of Technology)에 대한 개념 정리를 위하여 최근 수행된 NOT 관련 문헌 연구를 통하여 포괄적인 NOT 개념 틀을 제안하고 이를 바탕으로 국내외의 과학기술공학 전문가들의 기술 개념에 대한 인식을 탐구하고자 하였다. 과학과 기술교육 영역의 다양한 NOT 관련 선행연구를 분석하여 제시된 NOT 영역은 1. 인공물로서의 기술(Technology as artifacts), 2. 지식으로서의 기술(Technology as knowledge), 3. 실행으로서의 기술(Technology as practice), 4. 시스템으로서의 기술(Technology as system), 5. 사회적 역할의 기술(The role of technology in society), 그리고 6. 기술의 역사(History of technology) 6가지로 제안되었다. 또한 제안된 6개의 NOT 영역을 기준으로 과학기술공학 전문가들 30명의 인식 분포를 조사한 결과 전문가들은 다양한 NOT 개념 중에서 3. 실행으로서의 기술, 4. 시스템으로서의 기술, 그리고 5. 사회적 역할의 기술의 3가지 영역을 주로 인식하고 있는 것으로 나타났다. 이것은 NOT 선행연구에서 대중이나 학생들이 주로 기술을 '인공물로서의 기술' 또는 '응용 과학으로서의 기술'로 이해하고 있다는 결과와는 달리 과학기술공학 전문가들은 기술의 개념을 기술철학적 차원의 복잡하고 추상적인 '인간의 총체적 지식과 행위'로 이해하고 있다는 것을 보여주었다.

• 한국산림과학회지
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• 제88권2호
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• pp.205-212
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• 1999

본 연구는 휴양림 개발에 따른 지역 주민의 영향 지각이 그들의 자연환경태도 수준에 따라 차이가 있는지를 파악하고 이를 통해 휴양림 개발 이용 관리에 따른 지역주민간 이해 충돌 소지의 파악 방법으로 자연환경태도 정보 자료가 활용될 수 있는지를 살펴보기 위하여 수행되었다. 기존 연구 문헌을 참조하여 30개 지역 주민의 개발 영향 지각 및 의견 항목을 선정하였다. 자연환경태도 측정 조사는 NEP 척도 항목을 이용하였다. 1995년 10월, 2개 휴양림 인근 지역에 거주하고 있는 지역주민에 대한 직접 방문 조사를 통하여 총 204매의 설문 자료가 수집되었다. 일반적으로 대부분의 지역주민은 휴양림 개발에 대해 낮은 경제적 효과와 부정적 환경 영향을 지각하고 있었다. 자연환경태도 수준은 지역 주민의 사회경제적 변수에 따라 유의적 차이를 보였으며 특히 연령과 학력수준 변수에서 높은 유의적 차이가 인정되었다. 지역주민의 자연환경태도 수준은 휴양림 개발 지각에 영향을 주고 있었다. 본 연구 결과 자연환경태도는 휴양림 관리의 이해 충돌 해결에 유용한 도구로 활용될 수 있을 것으로 판단되었다.

• 마이크로전자및패키징학회지
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• 제23권1호
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• pp.35-39
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• 2016

The flexible and superhydrophobic properties of silica aerogels are extremely important material for thermal insulation and oil spill cleanup applications for their long-term use. Flexible silica aerogels were synthesized by using a two-step sol-gel process with precursors, methyltrimethoxysilane (MTMS) followed by supercritical drying. Silica aerogels were prepared at different molar ratio of methanol to MTMS (M). It was observed that the silica aerogels prepared at M=28 were monolithic but inelastic in nature, however, for M=35, the obtained aerogels were monolithic, elastic in nature with less shrinkage. The microstructural studies were carried out using scanning electron microscopy and surface area measurements. The hydrophobicity was confirmed by Fourier transform Infrared spectroscopy and water contact angle measurements. The detailed insight mechanism for flexible nature of silica aerogels and hydrophobic behavior were studied.

• 한국토양비료학회지
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• 제44권6호
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• pp.1226-1231
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• 2011

The biogenic emission of the atmospheric volatile organic compounds (VOCs) from the forests is dominated by monoterpenes. This study investigated the changes in the concentration of monoterpenes distributed in various types of forest near the Gangwon Nature Environment Research Park, Hongcheon, Gangwon Province, Korea. Samples were collected from the three sites of different types of forest, including coniferous, broad-leaved and mixed forests. Additionally, the seasonal and daily changes of monoterpene compounds were monitored. Our results found the several types of monoterpene such as ${\alpha}$-pinene, ${\beta}$-pinene, camphene, d-limonene, p-cymene and ${\alpha}$-terpinene. The highest total concentration of terpene compounds was observed in the coniferous forest. For the summer season, the total concentration of terpene compounds was highest in coniferous and mixed forests, and that was also highest in broad-leaved forest for the autumn.

• 경영과학
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• 제11권2호
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• pp.29-41
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• 1994

This paper analyses the stochastic nature of the Permanent Income Hypothesis (PIH) by specifying the variance-covariance structure of PIH based on Hall and Mishkin[3]. Maximum likelihood is employed to estimate the model by explicitely incorporating the heteroscedastic nature of the data into the likelihood. The data used are individual Korean household consumption and income data. The results indicate that the data are generally consistent with the Permanent Income Hypothesis, and about 11 percent of the total variation in consumption may be attributable to the excess sensitivity of consumption to income.

• Plant Resources
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• 제6권3호
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• pp.175-177
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• 2003

This study was conducted to investigate the effect of Activated charcoal (AC) for stimulating growth and productivity of Curcuma longa Linne as affected by different concentrations of AC. Growth characteristics such as plant height and leaf length were the highest with the optimum amount of activated charcoal ranged from 10 to 30%. Root growth was elongated by the addition of 30% AC with the highest rhizome length and weight.

• 한국환경과학회지
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• 제26권2호
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• pp.133-146
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• 2017

This study aimed to develop strategies to re-establish the Park Nature Conservation Area in Bukhansan National Park, reflecting landscape ecological value by using the zonation program Marxan with Zones. Planning unit was set by watershed, and the basic data were mapped, considering topographical and ecological values. Mapped indicators were analyzed with the application framework of Marxan with Zones by indexing some indicators. The zones divided into Park Nature Conservation Area (Zone A), Park Nature Environment Area I(Zone B) which is reflected on the concept of Potential Park Nature Conservation Area and Park Nature Environment Area II(Zone C). The best solution for each of the scenarios was fixed through the sensitiveness analysis. From these, the final solution was selected considering five criteria including area ratio of conservation area and grouping. Lastly, the final solution was verified in the overlapped analysis with recent zonation. According to the results, the number of watersheds was 77, with an average area of $1,007,481m^2$. In terms of basic mapping and indexation, the slope index and number of landscape resources for topographical property were average 0.22 and 38 places, respectively. Biotope index was average 0.69 and legally protected species was 14 species, reflecting ecological values. As the social and economic indicators, trail index was average 0.04, and the number of tour and management facilities was 43 places. Through the framework of Marxan with Zones, the best solution for scenario 1 which was set by the highest conservation criteria was selected as the final solution, and the area ratio of Park Nature Conservation Area and grouping was excellent. As the result of overlapped analysis, suggested zonation of the Park Nature Conservation was better than the recent zonation in the area raito (28.3%), biotope grade I(15.4%) and the distribution points (10 places) of legally protected species with verification of proper distribution of conservation features according to the zone.

• 대한한의정보학회지
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• 제18권1호
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• pp.116-137
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• 2012

The topic of this study is to ask and answer about 'What matters most in medicine'. And the purpose of this study is to establish paradigm which guarantee 'the original principles of science in medicine' and 'the safety of human life in medicine'. The organized characteristics of this study is as follows. 1. 'The harmony of nature (heaven, earth and human)' is the base of medicine. Because medicine control life directly and all life is 'the son of nature'. 2. 'The harmony of Eum and Yang' is the essential power of universe and the key of metabolism of all life including human, animals and plants. Because 'the nature of universe' and all 'Life field' is 'electro-magnetic field'. 3. The Convergence of Oriental medicine and Western medicine orients 'the harmony of Eum and Yang'.

• 한국과학교육학회지
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• 제10권2호
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• pp.25-37
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• 1990

Development of science education curriculum and instructional materials have been considered as the matt essential task for the establishment of scince education as an independent discipline, and for the intrenchment of status and identity of colles of Education The aim of this study was to identify the necessity and types for the development of science education curriculum and instructional materials. The nature and structure of science education were discussed in connection with school science subjects, science of education, and the structure of science education system. Also essential theory and practice of modular approach for development of curriculum were investigated in order to organize a guideline for the development of scince education modules. The guideline includes development procedures, major contents. and structure of science education modules which is organized by integration of the nature of scince education and concepts of modular approach for curriculum development.