• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.623-628
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• 2003

현재 정부는 다양한 행정서비스를 온라인화하는 전자정부 구현을 위해 여러 분야에서 관련 사업들을 진행 중에 있다. 수자원 분야에서는 하천관련 업무의 전산화 사업의 일환으로 하천지도전산화 사업을 진행 중에 있으며, 그 결과로 구축된 각종 DB를 종합적으로 활용하기 위한 다양한 분야의 하천주제도 구축이 요구되는 실정이다. 본 연구에서는 기 구축 DB를 효율적으로 활용하여, 보다 생산성 있는 하천주제도를 효율적으로 구축하기 위해 하천공간정보 데이터 모델을 설계하였다. 본 모델은 하천정보의 통합처리를 위해 미국의 USGS에서 사용하고 있는 ArcGIS Hydro Data Model을 기반으로 하였다. 이렇게 설계된 하천공간정보 데이터 모델은 다양한 하천주제도의 효율적 구축 방안을 제공할 수 있을 것으로 사료된다.

• Journal of the Institute of Electronics and Information Engineers
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• v.54 no.4
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• pp.83-90
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• 2017

Electrical impedance tomography is a relatively new nondestructive imaging modality in which the internal conductivity distribution is reconstructed based on the injected currents and measured voltages through electrodes placed on the surface of a domain. In this paper, a fast iterative Gauss-Newton method is proposed to increase the spatial resolution as well as reduce the inverse computational time in the inverse problem, which could be applied to online binary mixture flow applications. To evaluate the reconstruction performance of the proposed method, numerical experiments have been carried out and the results are analyzed.

• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.719-723
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• 2007

It is very active that existing companies of providing e-Learning contents try to differentiate themselves through a business model based on Web 2.0. For instance, Etoos, online education website (www.etoos.com) run by SK Communications has made more space where students can participate in the Web 2.0 era and overhauled its website completely, turning into an open-ended one, which strengthens learning and fun in 2007. This study is to analyze the present state of e-Learning contents with representative e-learning sites for middle and high school students, to find that the development direction for next generation e-Learning lies in developing contents focusing on learners that can get effective feedback and drawing collective intelligence grounded on the essence of Web 2.0, and to suggest 'the project to form virtual private tutor community in e-Learning contents.'

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.427-428
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• 2013

본 논문에서는 정보화에 취약한 농가의 약점을 보완할 수 있는 정보포털 시스템을 설계하여 중소규모의 농가 쇼핑몰, 블로그 등을 스토리텔링과 결합하여 온라인으로 홍보가 가능하도록 하였다. 농산물 홍보용 허브 플랫폼은 농가들이 운영하는 수없이 많은 쇼핑몰과 농 특산물을 홍보하기 위한 마케팅채널과 직접 자신의 농산물을 소개할 수 있는 채널을 구축하여 소비자와 생산자 실시간 온라인 대화채널 구축을 통한 소통 공간 조성 및 신뢰성을 확보할 수 있다.

• Annual Conference of KIPS
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• 2002.04a
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• pp.179-182
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• 2002

웹을 저작 공간으로 사용한 Wiki Wiki Web[4]은 텍스트 자원을 사용한 복잡하고 다양한 이야기의 표현이 가능하며 실시간은 아니지만 시분할 방식의 이야기 공동 저작과 감상을 지원한다. 하지만 이러한 도구를 사용하여 그림일기와 같은 그림과 텍스트 내공이 복합된 이야기를 저작하는 경우, 저작자는 텍스트 자원을 사용하여 이야기를 구성해야 하기 때문에 그림이 표현되어야 하는 부분을 표현할 수 없으며 공동저작을 손쉽게 하는 자동화 도구를 제공하지 않기 때문에 저작도구의 사용에 대한 불편함을 느끼게 된다. 이처럼 그림일기나 동화 등의 다양한 형태의 이야기를 표현하기 위해서 사용자가 멀티미디어 자원들을 사용하도록 하고 손쉬운 이야기를 구성하도록 하는 디지털 스토리텔링 저작도구가 요구된다. 본 논문에서는 저작자가 온라인상에서 직접 그린 스케치 영상을 사용하여 이야기의 배경과 캐릭터를 만들고 그것을 이야기 저작 소재로 사용하도록 하는 배경 및 액터 생성도구를 제공하고 다양한 형태의 이야기를 저작자가 손쉽게 표현하도록 하는 이야기 구성의 자동화 도구를 제공하면서 여러 사용자들이 실시간으로 이야기 저작과 감상에 공동으로 참여하도록 하여 저작된 결과를 애니메이션으로 감상할 수 있도록 하는 디지털 스토리텔링 도구를 설계하고 구현하였다.

• Journal of the Korea Society of Computer and Information
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• v.10 no.3 s.35
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• pp.345-352
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• 2005

This paper aims to design Game Rendering Engine for real-time 3D online games. Previous, in order to raise rendering speed, BSP tree was used to partitioned space in Quake Game Engine. A game engine is required to develop for rapidly escalating of 3D online games in Korea. too. Currently rendering time is saved with the hardware accelerator which is working on the high-level computer system. On the other hand, a game engine is needed to save rendering time for users with low-level computer system. Therefore, a game rendering engine is which reduces rendering time by PVS look-up table using Empty space BSP tree designed and implemented in this paper

• Journal of the Korean Data and Information Science Society
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• v.22 no.6
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• pp.1029-1040
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• 2011

In this paper we propose an intelligent navigation algorithm for real world problem which can build a map without localization. Proposed algorithm operates online and furthermore does not require many memories for applying real world problem. After applying proposed algorithm to toy and huge data set, it does not require to calculate a whole eigenspace and need less memory compared to existing algorithm. Thus we can obtain that proposed algorithm is suitable for real world mobile navigation algorithm.

• Korean journal of communication and information
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• v.18
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• pp.99-130
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• 2002

This study examines whether cyberspace produced by computer mediated communication(CMC) would perform the public sphere through the agenda-setting process. By doing this, this study focused on how the cyberspace agenda is set and on how the characteristics of cyberspace and the mass media influence the cyberspace agenda-setting process. Through this study, the possibility of cyberspace as the public sphere is found although the characteristics of cyberspace decide this possibility. In particular, in order for cyberspace to contribute to enhancing democracy as a form of alternative media, the interaction among cyberspace, mass media and the off-line arena is a necessary condition. The interaction between cyberspace and mass media regarding the Sungsoo Women's Middle School violence case provides two very important points. First, cyberspace helps the individual agenda to be adopted by mass media as the media agenda. Second, mass media confirmed the credibility of cyberspace agenda through reporting. In addition, this study reveals that cyberspace would perform as the public sphere only when the interaction between on-line and off-line is provided.

• Environmental and Resource Economics Review
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• v.30 no.3
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• pp.395-433
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• 2021

This paper aims to examine the effects of homeownership and residential types on the economic values of urban green spaces. Green open spaces as public goods provide positive externalities that are comprised of pecuniary and technological externalities. Seoul, South Korea, is used as a case study using choice experiments, with split-sample online respondents of 1,000. The study results evidenced that the differentiation between the two types of externalities is imperative for equitable provisions and efficient management of various urban open spaces. There is a positively significant and substantial impact of homeownership for apartment dwellers, ceteris paribus, but not for house dwellers. For apartments, the efficiency loss can be reduced by increasing green spaces up to the critical point where the marginal cost is at equilibrium with tenants' marginal values. For non-apartment houses, it is not homeownership but the monthly household income that has a significant impact on the amenity value. In general, public benefits from green spaces are equivalent to 16% to 33% of the current residential prices on average for a view or access. Different residential types do not cause a significant impact on the access values. Residential profiles for green spaces were developed, together with tailor-made policy suggestions.

• The Journal of the Convergence on Culture Technology
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• v.8 no.4
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• pp.381-386
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• 2022

The purpose of this study is to investigate the conditions for improving space use and satisfaction by examing the behavior, focusing on the senior center, one of the leisure welfare facilities for the older adults. An online survey was conducted on 300 older adults aged 65 years old (104 males, 196 females) who had experience using senior centers. The results are as follows. First, the frequency of use per older adults was 1-3 times a month the most, and the preferred frequency of use was 1-3 times a week. The results showed that they wanted to use the Senior center frequently, but they could not use it often. Considering the high preference for health promotion activity programs in senior centers, it is understood that the use of space programs for health promotion can be increased if provided. Second, as the usage time per route ranges from a minimum of 1 hour to a maximum of 5 hours, it is considered that satisfaction and usability can be improved if a space to support various personal activities is provided. Third, it is considered to be helpful to improve the program or space composition that can strengthen friendship or improve accessibility by appearing as difficulties in friendship and accessibility for the reasons not used per senior citizen.