• 예술인문사회 융합 멀티미디어 논문지
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• 제8권3호
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• pp.407-418
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• 2018

인류의 발전을 주도해 온 과학기술이 만들어낸 자연고갈과 기후변화, 이로 야기되는 경제적 불평등과 빈곤 등의 문제를 해결하고 자연과 인간의 조화를 이루기 위해서는 유아기부터 지속가능발전을 지향하는 과학교육이 필요하다. 본 연구에서는 지속가능발전지향 교육의 본질과 유아과학교육의 실천방향에 대해 고찰하여 지속가능발전지향 유아과학교육의 의미에 대해 알아보고자 한다. 이러한 목적을 위하여 관련 전문가 18명과 유아교사 15명을 대상으로 지속가능발전의 의미와 지속가능발전지향 유아과학교육의 실천방향에 대해 심층 면접을 실시하였다. 연구 결과, 지속가능발전 지향 유아과학교육은 '유아-교사-생명체간 상호존중', '개별 탐구 기반 공동체 의식 함양', '유아의 눈으로 세상 바라보기', '관심 주제에 대한 심화와 확장', '지속적 탐구와 몰입', '대화와 공유 중심 탐구'로 범주화 되었다. 결론적으로 지속가능발전 지향 유아과학교육은 유아가 관심 있는 주제로부터 출발하여 상호 존중의 탐구 경험을 통해 자신을 둘러싼 자연에 대해 지속적으로 알아가는 과정이라고 볼 수 있다.

• 융합정보논문지
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• 제11권2호
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• pp.219-228
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• 2021

본 연구는 스토리텔링을 활용한 유아수학교육에서의 유아교사들 간 그리고 연구자와의 협력적 관계로 이루어진 교육공동체 참여 경험을 살펴보고, 그 경험의 의미에 대해 알아보고자 하였다. 이를 위해 부산 소재 유치원 교사 3명과 연구자가 2016년 3월 14일 교육공동체의 형성으로 시작되어 2016년 7월 26일까지 진행되었으며, 교육공동체 모임 토의전사자료, 교사와 연구자의 반성적 저널자료, 교사의 개별면담 전사 자료를 수집하여 질적분석하였다. 연구결과, 첫째, 스토리텔링을 활용한 유아수학교육에서의 교육공동체 참여 경험은 개인적 수학경험과 수학적 상황을 공유하고 공유를 통해 수학내용지식을 이해하고 학습하였으며, 교육공동체를 통해 소통하면서 자신의 수학적 경험에 대하여 반성적 사고를 하였다. 둘째, 스토리텔링을 활용한 유아수학교육 교육 공동체 참여 경험의 의미를 살펴보면 수학적 오류를 통해 함께 배우고, 공유를 통해 더 나은 수업의 방향을 습득하여 협력적 수학탐구과정을 즐기는 교사로 성장하였고, 스토리텔링을 활용한 유아수학교육에서의 협력을 통한 공동실천을 증진하였다.

• 천문학회보
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• 제40권1호
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• pp.52.2-52.2
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• 2015

In astronomical observations, stable auto-guiding and accurate target centering capabilities are critical to increase observation efficiency and sensitivity. Recently, Center for the Exploration of the Origin of the Universe (CEOU) has developed SQUEAN (SED camera for QUasars in EArly uNiverse). SQUEAN is installed and had successful observations at the 82 inch Otto Struve Telescope of McDonald Observatory in 2015 February. We have upgraded the existing auto-guiding softwares to KAP82 (KHU Auto-guiding Package for the McDonald 82 inch Telescope). Keeping the original hardware systems and the software algorithms of CAP (CQUEAN Auto-guiding Package), KAP 82 is completely re-written in Visual C++. We developed several center finding algorithms, e.g., 2D-gaussian fitting and weighted mean methods. In this presentation, we compare the auto-guiding performances with these algorithms.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(3)
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• pp.13-16
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• 2001

In reinforcement teaming, Q-learning converges quite slowly to a good policy. Its because searching for the goal state takes very long time in a large stochastic domain. So I propose the speedup method using the Q-value initialization for model-free reinforcement learning. In the speedup method, it learns a naive model of a domain and makes boundaries around the goal state. By using these boundaries, it assigns the initial Q-values to the state-action pairs and does Q-learning with the initial Q-values. The initial Q-values guide the agent to the goal state in the early states of learning, so that Q-teaming updates Q-values efficiently. Therefore it saves exploration time to search for the goal state and has better performance than Q-learning. 1 present Speedup Q-learning algorithm to implement the speedup method. This algorithm is evaluated. in a grid-world domain and compared to Q-teaming.

• Architectural research
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• 제18권3호
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• pp.91-102
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• 2016

This study examines modernist grid and boundary in the works of Toyo Ito - two of the most important notions characterizing the development of Toyo Ito as an iconoclast architect. Early in his career, Ito recognized modernist architecture's inherent tendencies to establish homogenous order and divide space by function was alienating people from their context. Ito identified the notions of modernist grid and boundary as the agents of Modernism which inadvertently served to impose this systematic order and severe separation. As a reaction against these tendencies, Ito sought to avoid the use of modernist grid and blur boundary in his architecture. In Ito's career spanning over four decades, he engages in an exhaustive inquiry seeking to modify these two core elements of architecture. This study investigates these two notions in Ito's works and examines the significance of the architect's exploration in the context of Japan's Modernism.

• Journal of information and communication convergence engineering
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• 제12권1호
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• pp.46-52
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• 2014

This article presents key research needs in three-dimensional integrated circuit (3D IC) architectural floorplanning. Architectural floorplaning is done at a very early stage of 3D IC design process, where the goal is to quickly evaluate architectural designs described in register-transfer level (RTL) in terms of power, performance, and reliability. This evaluation is then fed back to architects for further improvement and/or modifications needed to meet the target constraints. We discuss the details of the following research needs in this article: block-level modeling, through-silicon-via (TSV) insertion and management, and chip/package co-evaluation. The goal of block-level modeling is to obtain physical, power, performance, and reliability information of architectural blocks. We then assemble the blocks into multiple tiers while connecting them using TSVs that are placed in between hard IPs and inside soft IPs. Once a full-stack 3D floorplanning is obtained, we evaluate it so that the feedback is provided back to architects.

• 보건교육건강증진학회지
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• 제30권4호
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• pp.69-76
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• 2013

Objectives: This article intends to explore the major documents about inter-sectoral collaboration for physical activity promotion based on new paradigm. Methods: In addition to the documents after 1990s collected through several physical activity related projects of author, additional snowballing exploration has been done. Results: Globally extensive participation of stake-holders and partnership developed were strategically recommended and implementation strategy and good example were provided. In Europe individual, micro-environmental and macro-environmental specific role of major sectors were provided. Nationally series of Australian documents officialized inter-sectoral linkages from early times and Slovenian program showed examples of inter-sectoral evaluation and health indicators. U.S. national physical activity plan showed specific example of 6 guiding principles and 5 overarching strategies among 8 sectors for good inter-sectoral collaboration. In city level, healthy city approach activated. Conclusions: Various specific good examples of intersectoral physical activity collaboration could searched globally, regionally and nationally for application in Korea.

• 천문학회보
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• 제39권2호
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• pp.115-115
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• 2014

First, We will briefly introduce early science results of AGN observations with KVN and KaVA. KaVA is the combined array of the Korean VLBI network (KVN) and VLBI Exploration of Radio Astronomy (VERA). These include KaVA monitoring of M87, Sgr A* and a few bright blazars and KVN Search for circular polarized Blazars. Furthermore, we will present our future plan of monitoring observation of Sgr A* and M87 with KaVA and Low Radio Power AGN multi frequency polarization survey with KVN. Because of the largeness of their centralsuper-massive black holes, we select them as top-priority sources of our key science program (KSP). The main science goals of the KaVA KSP are (1) mapping the velocity field of the M87 jet and testing magnetically-driven-jet paradigm, and (2) obtaining tightest constraints on physical properties of radio emitting region in Sgr A. High sensitivity achieved through simultaneous multifrequency phase referencing technique of KVN will allow us to explore Low Radio Power AGN cores which build majority of AGNs and therefore are important for undestanding the evolution of AGNs and of their hosts.

• 한국데이터정보과학회:학술대회논문집
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• 한국데이터정보과학회 2005년도 추계학술대회
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• pp.153-159
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• 2005

Microarray gene expression technology has applications that could refine diagnosis and therapeutic monitoring as well as improve disease prevention through risk assessment and early detection. Especially, microarray expression data can provide important information regarding specific genes related with metastasis through an appropriate analysis. Various methods for clustering analysis microarray data have been introduced so far. We used twostep clustering fot ascertain metastasis related gene through t-test. Through t-test between two groups for two publicly available medulloblastoma microarray data sets, we intended to find significant gene for metastasis. The paper describes the process in detail showing how the process is applied to clustering analysis and t-test for microarray datasets and how the metastasis-associated genes are explorated.

• 천문학회보
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• 제37권1호
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• pp.70.1-70.1
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• 2012

CQUEAN (Camera for QUasars in EArly uNiverse)은 초기우주천체 연구단(Center for Exploration of Origin of the Universe) 사업에서 개발한 CCD 카메라로서 초기우주의 퀘이사 후보를 찾기 위한 목적으로 설계되었다. CCD를 구동할 때는 픽셀 다이오드의 PN 접합층에 공핍층(depletion layer)을 생성하기위해 역 바이어스 전압을 준다. 이 전압에 의해 CCD를 사용한 관측 시 광이온화와 열이온화 현상에 의해 생성된 전자의 전하값에 추가로 바이어스 값이 읽혀진다. 정확한 CCD 측광 결과를 얻어내기 위해서는 안정된 바이어스를 유지해야 한다. 본 연구에서는 향후 CQUEAN의 보다 정확한 관측 및 데이터 처리에 대비하여 CQUEAN의 바이어스 특성을 분석하여 이 값에 영향을 주는 요인을 찾고 해결책을 논의한다.