• 천문학회보
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• 제41권1호
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• pp.58.1-58.1
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• 2016

K-GMT Science Program, operated by Center for Large Telescopes (CfLAT) in Korea Astronomy and Space Science Institute (KASI), aims to promote the scientific researches by providing the access to the observational facilities such as 4-8m class telescopes and specialized instruments. In 2016, we plan to make various instruments with MMT and Gemini Observatory as well as IGRINS with 2.7m HJS Telescope in McDonald Observatory available to Korean Astronomical Community. We will present the current status and future prospect as well as some early results made from the K-GMT Science Program in past years.

• 천문학논총
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• 제38권2호
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• pp.75-89
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• 2023

Technosignature, previously known as SETI(search for extraterrestrial intelligence), is the scientific evidence of past or present extraterrestrial civilizations. Since NRAO's Project Ozma was performed in 1960, most of the noticeable technosignature searches have been done by radio telescopes, hoping to find strong and narrow bandwidth signals that cannot be explained by known natural processes. Recently, the Breakthrough Listen project has opened a new opportunity for technosignature by utilizing both optical telescopes, radio telescopes, and next-generation radio telescope arrays. In this review, mainly based on NASA Technosignatures Workshop (2018), we review the current trends of technosignature surveys, as well as other possible methods for detecting technosignature. Also, we suggest what the Korean community could contribute the technosignature research, including the new SETI project with Korea VLBI Network (KVN).

• 한국과학교육학회지
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• 제42권1호
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• pp.1-18
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• 2022

오늘날 세계적으로 영향력을 미치고 있는 21세기 과학 교육과정 개혁의 두 논리는 핵심 역량 및 과학적 소양이라고 할 수 있다. 그런데 양자 간의 관계는 아직 면밀히 규명되지 않고 모호하게 남아 있으며, 이로 인하여 국가 교육과정 총론 수준의 혁신적 교육과정 구성 논리와 과학 교과의 고유한 교육과정 구성 논리가 조화되는 데 어려움이 발생하고 있다. 이에, 본 연구는 21세기 과학 교육과정 개혁 논리로서의 과학적 소양 및 핵심 역량 담론을 비교하여, 향후 과학 교육과정 개정에 대한 시사점을 제공하고자 하였다. 본 연구는 문헌 연구 방법을 취하였다. 이에 과학적 소양 및 핵심 역량 담론들을 구성해온 주요 연구 문헌들과 정책 보고서들을 두루 참조하였다. II장에서는 먼저 과학적 소양 및 핵심 역량 담론들이 영향력을 발휘하게 된 역사적 경로를 돌아본다. 이 과정에서 2000년대 초반부터 각 담론의 전개양상을 모양지운 OECD의 역할에 주목할 것이다. 그리고 국내에서 해당 담론들이 어떻게 수용되어왔는가 또한 살펴본다. III장과 IV장에서는 과학적 소양과 핵심 역량 담론의 교차를 살펴본다. III장에서는 양자 모두가 학생 위기 레토릭에 힘입어 성장하였다는 점, 개인 차원, 공동체 차원, 지구적 차원을 고려하는 다층적 의미를 지닌다는 점, 교과 내용 조직 및 학습 방법의 논리가 유사하다는 점, 고부담 평가가 교육과정 개혁을 촉구한다는 점이 제시된다. IV장에서는 과학적 소양과 핵심 역량 담론 각각이 과학 교육과정 개혁에 대하여 제공할 수 있는 차별화된 강점과 함께 약점 역시 비교한다. V장에서는 후기 Wittgenstein 및 Kuhn의 관점에서, 과학적 소양과 핵심 역량을 21세기 과학 교육과정 개혁 논리로서의 가족유사성을 지니는 언어로 이해할 수 있다고 제안한다. 이를 통해 우리나라 국가 교육과정 개발에서 반복되곤 하는 '총론과 각론의 괴리' 문제를 해소할 이론적 실마리와 함께, 2022 개정 교육과정을 비롯한 향후 과학 교육과정 담론이 위기 레토릭을 넘어 희망적인 목소리를 담아야 함을 제안한다.

• 한국미생물·생명공학회지
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• 제40권3호
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• pp.268-273
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• 2012

인도네시아 지열지대의 미생물 다양성을 16S rRNA 염기서열 분석을 통해 조사하였다. 전체적으로 어떠한 phylum 계통군에도 포함되지 않는 unclassified bacteria가 20.0-26.5% 존재하였으며 sampling 지역에 상관없이 Proteobacteria가 우점 phylum 계통군으로 나타났다. Cisolok 주변의 지열 지역을 조사한 결과 ${\beta}$-Proteobacteria (27.1%)와 Cyanobacteria (11.0%)가 높은 비율을 차지한 반면 Kamojang의 화산 주변 지역의 경우에는 ${\gamma}$-Proteobacteria (51.5%) 그리고 Aquificales (12.9%)가 우점 계통군으로 나타났다. 또한 Likupang 열수구의 경우에는 ${\gamma}$-Proteobacteria (33.3%)와 Bacteroidetes (27.6%)가 높은 비율로 나타났다. 본 연구를 통해 인도네시아 각 지열지대에 분포하는 미생물 군집은 각 지역의 환경적인 특징 (극한 지열 및 해양 서식지)과 밀접한 연관성이 있음을 알 수 있었다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제44회 동계 정기학술대회 초록집
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• pp.628-628
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• 2013

Graphene, a single layer of graphite, has raised extensive interest in a wide scientific community for its extraordinary thermal, mechanical, electrical and other properties [1,2]. However, because of zero-band gap of graphene, it is difficult to apply for electronic applications. To overcome this problem, chemical doping is one of way to opening grahene bandgap. According to experimental results, by changing doping concentration and doping time, it is possible to control work function of graphene. We can obtain results through raman spectroscopy, UPS, Sheet resistance. Moreover, electronic properties of doped graphene were studied by making field effect transistors. We were able to control the doping concentration, dirac point of graphene and work function of graphene by formng n-type, p-type doping materials. In this research, the chemicals of diazonium salts, viologen, etc. were used for extrinsic doping.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2007년도 제29회 추계학술대회논문집
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• pp.27-30
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• 2007

In recent years, scientific community has found renewed interest in hypersonic flight research. These hypersonic vehicles undergo severe aero-thermal environments during their flight regimes. One of the most important topics of research in hypersonic aerodynamics is to find a reasonable way of calculating either the surface temperature or the heat flux to surface when its temperature is held fixed. This requires modeling of physical and chemical processes. Hyperbolic system of equations with stiff relaxation method are being identified in recent literature as a novel method of predicting long time behavior of systems such as gas at high temperatures. In present work, Energy Relaxation Method (ERM) has been considered to simulate the real gas flow over a 2-D cylinder. Present heat flux results over the cylinder compared well with the experiment. Thus, real gas effects in hypersonic flows can be modeled through energy relaxation method.

• 가족자원경영과 정책
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• 제2권1호
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• pp.47-57
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• 1998

This paper delves into philosophical aspects of institutional household(IH) study. The paper argues that it is also necessary to investigate theoretical, methodological, and philosophical issues, not only prescriptive, practical, and managerial ones, in order to establish a field of study as an independent area of academic discipline. In that sense the paper is expected to contribute to the establishment of "the science of IH" as well as the growth of knowledge in that field. For philosophical discussions, the paper first reviews overall sub-fields of philosophy of science such as ontology, epistemology, methodology, and the debate on human nature. Then, it focuses on philosophical issues relating to the nature of IH including (1) the substance of institutional household as scientific investigation, (2) the epistemological basis of IH study, (3) the possibility of normal methodology in studying IH, (4) the values that IH ought to pursue, and (5) the rationale and autonomy of IH study. In the conclusion section, the paper discusses why the study on philosophical aspects in IH is critical in academic community of family resource management.anagement.

• 한국초등과학교육학회지:초등과학교육
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• 제35권1호
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• pp.39-53
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• 2016

This study aimed to understand students' learning in elementary science classes in terms of participatory perspective. Participatory perspective is based on the participationist views on learning. Based on the participatory perspective, this study used two concepts of participationism: 'the changes of learning on commognition' of Sfard (2007) and 'the identity' of Wenger (1998/2007). Based on these concepts, four episodes of an elementary science class were analyzed. The results showed that students carried out their learning from objective-level learning to meta-level learning. And students defined who they are by identifying and negotiating scientific meaning during the learning. These results showed students become members of science community through their participations in science class.

• 한국농공학회논문집
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• 제61권2호
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• pp.51-61
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• 2019

In this study, interest in rural life of good natural environment rather than busy life is increasing as human life is extended by scientific and medical technology and society has improved. The reckless development of rural villages has caused social problems as the natural environment has been damaged, failing to function as a pleasant home. To address these problems, the government has implemented a rural village development project, but if the site is selected incorrectly, the residents may not be recruited, or applicants may lose their status, or the portion of the infrastructure building fee may increase. In order to prepare objective and clear assessment methods for the target site not to cause such problems, a layering analysis method (AHP: Analytic Method) was used to identify the current status of the rural village formation project, draw assessment items, and determine the importance of each item.

• Journal of Ginseng Research
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• 제46권2호
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• pp.183-187
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• 2022

The current Covid-19 pandemic has changed the entire world and bought so many unprecedented challenges to the scientific community. More than 5 million people died due to the SARS-COV-2 outbreak. For many thousands of years, ginseng, the traditional herb has been used for various infectious diseases by traditional healers. Ginseng showed promising antiviral effects by modulating both natural and acquired immunity. Ginseng might be used as a potential therapeutic agent to prevent SARS-CoV-2 infection along with the vaccine. In this current review, we offer an alternative approach for SARS-COV-2 prevention during this unprecedented pandemic.