• 한국과학교육학회지
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• 제19권4호
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• pp.585-594
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• 1999

The purpose of this study is to examine the concept of Greenhouse Effect as understood by middle school high school university students using a closed-form questionnaire. Based on results of the questionnaire which was administered to 619, the extent to which alternative concepts were held was quantified and compared the difference of various group based on grade level. gender, text and major. Also, subjects were divided into two groups, one is middle school students and the other is high school university students and common themes within conceptual framework of each group were identified by factor analysis. The result showed that students confused Greenhouse Effect with ozone layer depletion in stratosphere and linked familiar contamination around everyday life. acid rain. radioactive contamination, nuclear arsenal to Greenhouse Effect. These trends were more appreciable in female than male, biology major than any other major and text did not make any significant difference. In addition, the result of factor analysis showed that two groups linked familiar contamination around everyday life to Greenhouse Effect and high school university students understand the consequences of an increase in the Greenhouse Effect more systematically than middle school student, perceived the relation between the origin of an increase in the Greenhouse Effect and human activity but confused Greenhouse Effect with ozone layer depletion in stratosphere.

• 천문학회보
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• 제43권2호
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• pp.40.4-41
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• 2018

The current 'standard model' of cosmology provides a minimal theoretical framework that can explain the gaussian, nearly scale-invariant density perturbations observed in the CMB to the late time clustering of galaxies. However accepting this framework, requires that we include within our cosmic inventory a vacuum energy that is ~122 orders of magnitude lower than Quantum Mechanical predictions, or alternatively a new scalar field (dark energy) that has negative pressure. An alternative approach to adding extra components to the Universe would be to modify the equations of Gravity. Although GR is supported by many current observations there are still alternative models that can be considered. Recently there have been many works attempting to test for modified gravity using the large scale clustering of galaxies, ISW, cluster abundance, RSD, 21cm observations, and weak lensing. In this work, we compare various modified gravity models using cosmic shear data from the Deep Lens Survey as well as data from CMB, SNe Ia, and BAO. We use the Bayesian Evidence to quantify the comparison robustly, which naturally penalizes complex models with weak data support. In this talk we present our methodology and preliminary results that show f(R) gravity is mildly disfavoured by the data.

• 수완나부미
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• 제13권1호
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• pp.7-33
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• 2021

With a view to contributing to the epistemological and methodological debates in Southeast Asian Studies, the aim of this paper is to examine critically the epistemic concepts and approaches in the social sciences and then to seek an epistemic reflexivity and its potential methodological applications to Southeast Asian Studies. Although the field of social sciences has attempted to search for a means of tackling the ontological and epistemological dilemmas in its major paradigms, Southeast Asian Studies still demands a more 'actor-centered' epistemic account of reflexive interaction between actors and social structures. Bearing in mind the need for a more 'actor-centered' epistemic approach, this paper continues to discuss the 'epistemic reflexivity' in the social sciences and its potential applications to Southeast Asian Studies. In this paper, I will consider 'epistemic reflexivity' as an alternative methodological orientation. It emerges as interlinked with the ontological standpoint of what is called 'reflexive approaches' and its application to the detailed 'reflexive methodology' which I am proposing in this paper. In doing so, this paper discusses the autobiographical experiences of the author arising from his ethnographic field research in North Sulawesi, Indonesia and their implication for a reflexive methodology in Southeast Asian Studies. In conclusion, the paper argues that we need a 'more actor-centered' epistemic framework to compensate for the epistemological and methodological dilemmas in the social sciences and the alternative framework will equip Southeast Asian Studies with a reflexive methodology relevant to the life-dynamics of the social world in the process of developing its inquiries, methodological technics, analysis, and validation.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.147-152
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• 2005

In order to promptly cope with the various requirements of consumers, the environment of product development is being globalized in manufacturing industrials. For this reason, it is necessary to build up an efficient collaborative system for communication between remote area designers. Specially, while Internet and information technologies were merged with the manufacturing or business process, the research for collaborative system has become an important issue. Therefore, we propose a Web-based Engineering Collaboration Framework using SPS(SharePoint Portal Server) which is an enterprise business solution that integrates information from various system into one solution through single sign-on and enterprise application integration capabilities, with flexible deployment options and management tool. Through a Web-based Engineering Collaboration Framework, designers can exchange design information and have a conference in remote area designers or designer teams for alternative designs

• 한국도서관정보학회지
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• 제48권4호
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• pp.129-151
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• 2017

현재 디지털 아카이빙에 널리 적용되고 있는 정보 모델링에서는 기술사항 생성을 위한 개념적인 프로세스만을 정의하고 있으며, 이를 정보자원의 보존 혹은 보존을 위한 메타데이터의 생성에 실제적으로 적용하는데 있어서는 한계를보이고 있다. 이에 본 연구에서는 디지털 아카이빙에서의 정보 개체를 효율적으로 기술하기 위해 정보자원 클러스터의 개념을 제안하고, 이를 실제적으로 구현하기 위해 XML 구문에 기반한 RDF를 적용하여 보존 기술항목 프레임워크를 구축하였다. 이는 OAIS 참조모델과 FRBR의 개념적인 구조를 결합하여 보존의 대상이 되는 정보자원을 보다 효과적으로 기술하고 보존 메타데이터를 생성할 수 있는 대안적인 접근방법으로 활용될 수 있을 것으로 기대된다.

• Wind and Structures
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• 제32권4호
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• pp.283-292
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• 2021

Performance-based seismic design (PBSD) is currently used for retrofitting of older buildings and the design of new buildings. Whereas, application of performance-based design for wind load is still under development. The tendency has been in the codes to increase wind hazard based on recent recorded events. Since tall buildings are highly susceptible to wind load, necessity for developing a framework for performance-based wind design (PBWD) has intensified. Only a few guidelines such as ASCE (2019) provide information on using PBWD as an alternative for code prescriptive wind design. Though wind hazards, performance objectives, analysis techniques, and acceptance criteria are explained, no recommendations are provided for several aspects like how to select a proper level of wind hazard for each target performance criterion. This paper is an attempt to explain current design philosophy for wind and seismic loads and inherent connection between the components of PBSD for development of a framework for PBWD of tall buildings. Recognizing this connection, a framework for PBWD based on limits set for serviceability and strength is also proposed. Also, the potential for carrying out PBWD in line with ASCE 7-16 is investigated and proposed in this paper.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1138-1145
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• 2022

While pursuing digitalization and paperless projects, the construction industry needs to settle on how to make the most of digitized data and information. On-site workers, who currently rely on paper documents to check and review design and construction plans, will need alternative ways to efficiently access the information without using any paper. Augmented Reality is a potential solution where the information customized to a user is aligned with the physical world. This paper proposes the Augmented Reality framework to deliver the information on on-site resources (e.g., workers and equipment) using head-mounted devices. The proposed framework was developed by interoperating Augmented Reality-supported devices and a digital twin platform in which all information related to ongoing tasks is accumulated in real-time. On-site resources appearing in the user's field of view are automatically detected by an object detection algorithm and then assigned to the corresponding information by matching the data in the digital twin platform. Preliminary experiments show the feasibility of the proposed framework. Worker detection results can be visualized on HoloLens 2 in near real-time, and the matching process obtained the accuracy greater than 88%.

• 대한지리학회지
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• 제44권5호
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• pp.647-660
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• 2009

오늘날 관광이 개발전략으로써 각광을 받고 있지만, 그 결과는 개발과 관련된 이해집단을 어떻게 관리하느냐에 따라 달라질 수 있다. 이러한 이유로 어떻게 효율적으로 이해집단들을 관리하는지의 문제가 최근의 연구관심사가 되고 있다. 조직이론으로부터 시작된 협력이론은 이러한 문제에 대한 하나의 대안을 제시하기는 했지만, 이해집단들 사이의 역학관계를 충분히 고려하지 않은 한계를 가지고 있다. 본 논문은 이러한 관점에서 크게 다음 두 가지의 연구목적을 가지고 있다. 첫째, 관광개발의 맥락에서 협력이론을 비판적으로 분석하고, 그 한계를 보완하기 위하여 이해집단 분석틀의 필요성을 밝혀내는 것이며, 둘째 이러한 이해집단 분석틀의 모델을 제시하는 것이다. 본 논문에서 연구자는 이익, 관점, 권력자원, 관여도, 영향력, 정당성의 여섯 가지 요인으로 구성된 이해집단분석틀을 제시하였는데, 이러한 분석틀은 이해집단 파악, 이해집단 분석, 이해집단 관리전략 설정의 3단계로 설정된다. 본 논문에서 제시된 이해집단 분석틀은 협력적인 관광개발을 좀 더 효율적으로 이끌어내는데 도움이 될 수 있을 것이다.

• 경영정보학연구
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• 제5권2호
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• pp.37-51
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• 2003

본 연구에서는 모바일 비즈니스를 특정 단말기 형태에 국한되지 않고, 이동성이 부과된 e-비즈니스로 정의하고, 더 포괄적인 가상공간에서의 상거래 프레임워크를 이루는 두 축으로 연결성(connectivity)과 이동성(mobility)을 도출하여 두 축의 조화(combination)로 인한 각 서비스의 내용들을 여러 사례들을 제시하여 설명한다. 기존 전자 상거래와 e-비즈니스를 설명할 때 주로 고려되었던 "연결성" 요소 이외에, 오프라인상의 "이동성" 요소를 추가한 점이 본프레임워크의 특징이라 할 수 있겠다. 이동성이 '장소(위치)'가 전제되어야 한다는 점에 착안하여 이와 관련된 기술적 요소로 위치 기반 서비스(LBS: Location-Based Service)가 새로운 e-비즈니스 모델 및 서비스 개발에 중요한 역할을 할 것으로 기대된다.

• 대한토목학회논문집
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• 제34권6호
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• pp.1919-1924
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• 2014

최근 기후변화로 인해 극한강우사상의 빈도 및 강도가 증가함에 따라 과거 기준에 의해 설계 시공되어 현재 운영 중인 댐의 수문학적 안전성에 의문이 제기되고 있다. 이에 따라 댐을 증고하거나 여수로를 확장/신설하는 방안이 추진되고 있는데, 이러한 대안을 선정할 때 월류 가능성에 매몰된 나머지 하류 홍수피해를 간과하는 경향이 있다. 이에 본 연구는 회복탄력성의 개념을 도입해 종합적인 홍수조절기능의 관점에서 댐의 안전성 강화 대안을 평가할 수 있는 프레임워크를 제시하였다. 제시된 프레임워크를 활용해 기 수행된 사례에 적용한 결과 각 대안에 따른 홍수유출특성이 선정과정에서 중요한 요소로 평가되어야 함을 확인할 수 있었다.