• Korean Journal of Construction Engineering and Management
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• v.20 no.6
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• pp.57-65
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• 2019

If aging apartments are left unimproved through remodeling, the city will be eventually slum. As the government recognizes remodeling as an alternative to reconstruction, the law has been revised mainly to increase the housing area, increase the number of house and allow the vertical extension for making remodeling costs. However, the remodeling is still not activated yet in the market. Therefore, this study analyzes the decision factors of apartment remodeling in Seoul metropolitan area based on Heckman two-stage analysis considering sampling error. Research findings indicate that the decision for remodeling is determined by the characteristics of the household, housing, and time-lapse variables. And also the number of household members, net assets, housing satisfaction, the 11-20, 21-30, and more than 30 years of building are identified as the significant variables as a result of remodeling choice probability analysis. It is noteworthy that the significant variables from then remodeling cost analysis are net assets, area, more than 30 years of building, and unit housing price. It is also notable that the policy, which extend the housing area to cover remodeling cost, are not actually effective to activate the remodeling, and the age in the case of elderly people in Seoul and Gyeonggi-do who are expected to have high net assets and income is not significant variables. This study is expected to provide more objective and reliable implication to the policy makers, the home owner and the investors on the decision making process related to the remodeling project.

• The Journal of the Korea Contents Association
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• v.9 no.2
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• pp.359-364
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• 2009

This study is which sees analyzes the distance perception of the tourist affects in tourist resort selection conduct and this leads and there is the goal provides a fundamental data to the marketing strategic establishment an area tourist resort activation. According to the research result residence of choice there was a difference to psychological distance perception, according to sex and occupation appeared with the fact that is difference to tourist resort selection conduct. The psychological distance perception while tourist resort selection acting was analyzed with the fact that affects in travel ability. The research which sees psychological distance perception affects with the scholastic questionable matter which analyzes the thing a practical questionable matter respects an area tourist resort marketing strategic establishment together in tourist resort selection conduct and provided new fundamental information.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2002.05a
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• pp.203-207
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• 2002

본 연구에서는 한국사람이 모국어인 한국어 단어를 산출할 때와 외국어인 영어 단어를 산출할 때 관여하는 대뇌 영역을 fMRI 를 통해 조사하였다. 또한, 단일 언어를 산출할 때와 두 언어를 수시로 바꾸어서 인출할 때 관련되는 뇌 영역이 어디인지를 조사하였다. 실험에 참가한 피험자는 외국어를 공식적인 교육을 통해 12 세 근처에서 배우기 시작한 대학생이었다. 흔히 분류하는 방식으로 late learner로 구분되는 학생들이었다. 한 피험자가 세 종류의 실험 모두에 참여하였다. 피험자의 실험과제는 그림을 보고 그림에 해당되는 이름을 인출하여 말하는 과제였다. 실험 1, 2, 3 모두에서 사건관련 fMRI(event-related fMRI) 기법을 사용하였다. 실험 1에서는 그림을 보고 그림 이름에 해당되는 한국어 어휘와 외래어 어휘를 산출하게 하였다. 언어관련 뇌영역인 Wernicke 영역, Broca 영역, SMA 영역, SMG 영역 등에서 유의미한 활성화가 있었다. 실험 2 에서는 실험 1 에서 사용하지 않았던 그림을 사용하여 그림의 영어 이름과 외래어 이름을 인출하게 하였다. 외국어인 영어 단어를 산출할 때에도 모국어 단어를 산출할 때와 유사한 영역이 활성화되었다. 특히 외래어 산출 시에는 뇌 활성화 영역이 모국어와 영어 단어 산출할 때와 모국어 산출할 때 활성화되는 공통 영역이 활성화되었다. 모국어 산출과 영어 단어 산출의 차이점은 외국어 산출 시에 활성화 영역이 전반적으로 더 컸다는 것과 외국어 단어 산출 시에 Broca 영역보다 조금 밑쪽에서 그리고 모국어 단어 산출시에는 전전두엽 영역에서 더 많은 활성화가 있었다. 실험 3 에서도 실험 1 과 실험 2 에 사용하지 않았던 그림을 사용하였다. 실험 3 의 특이한 결과는 언어 switching 이 있는 경우에 전통적인 언어 영역 활성화 외에 전전두엽의 활성화가 컸다는 것이다. 아마도 언어를 바꾸어 가면서 단어를 산출하는 것이 전전두엽의 정보선택과정에 많은 영향을 주었던 것으로 해석된다. 전체적으로 어휘 산출시에 모국어 어휘, 외국어 어휘, 외래어 등을 산출할 때 공통되는 언어 영역과 언어 특성적 영역이 활성화된다고 결론지을 수 있을 것 같다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.305-309
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• 2006

Construction management system has been needed to be anchored and revitalize in these days, since it was entered into a domestic market. We could consider application of CM services as a challenge of construction project system and a way to get to an advanced nation in construction field. Application of CM services could be possible in public projects by a regime. However, in case of private construction projects, it is hard to apply it without understanding of substantial necessity and propriety. so in this study, we find a application method of CM services to private small-midium construction projects, and make CM services item table of CM services for revitalization by examining the cases that applied to in private small-medium construction projects.

• Journal of Broadcast Engineering
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• v.10 no.1 s.26
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• pp.4-13
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• 2005

An equalization algorithm is proposed to guarantee a stable performance in fast fading channels for digital television (DTV) systems from the advanced television system committee (ATSC) standard. In channels with high Doppler shifts, the conventional equalization algorithm shows severe performance degradation. Although the conventional equalizer compensates poor channel conditions to some degree, long filter taps required to overcome long delay profiles are not suitable for fast fading channels. The Proposed sparse equalization algorithm is robust to the multipaths with long delay Profiles as well as fast fading by utilizing channel estimation and equalizer initialization. It can compensate fast fading channels with high Doppler shifts using a filter tap selection technique as well as variable step-sizes. Under the ATSC test channels, the proposed algorithm is analyzed and compared with the conventional equalizer. Although the proposed algorithm uses small number of filter taps compared to the conventional equalizer, it is stable and has the advantages of fast convergence and channel tracking.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.31 no.4
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• pp.35-43
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• 2003

In this paper, an efficient computational algorithm for the implementation of the newly proposed node activation technique is presented, and its computational aspects are thoroughly investigated. To verify the validity, convergence, and efficiency of the node activation technique, various numerical examples are worked out including the problems of Poisson equation, 2D elasticity problems, and 3D elasticity problems. From the numerical tests, it is verified that one can arbitrarily activate and handle the nodal points of interest in finite element model with very little loss of the numerical accuracy.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.31 no.4
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• pp.26-34
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• 2003

In this paper, a novel technique is proposed to arbitrarily activate the nodal points in finite element model through the meshless approximation methods such as MLS(moving least squares method), and theoretical investigations are carried out including the consistency and boundeness of numerical solution to prove the validity of the proposed method. By using the proposed node activation technique, one can activate and handle only the concerned nodes as unknown variables among the large number of nodal points in the finite element model. Therefore, the proposed technique has a great potential in design and reanalysis procedure.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.281-282
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• 2024

본 논문에서는 사용자들의 운동 능력과 영어 학습 능력 향상을 위한 앱을 개발한다. 지정한 시간에 알람을 울리고, 운동 및 학습을 완료하는 경우에만 알람이 종료한다. 알람이 활성화되면 사용자가 강제적으로 종료할 수 없는 기능을 선택할 수 있다. TTS 기능을 적용하여 알람이 활성화되었을 때, 안내 음성이 나오도록 설계하였다. 학습 기능에 STT를 적용하여 영어 단어와 문장을 마이크에 인식하는 방식의 영어 문제를 제시하였다. 또한, OpenAI를 활용하여 매일 자정 새로운 영어 문제를 생성하고 서버에 저장한다. 이러한 기능들은 사용자의 선택권을 보장하며 건강 증진 및 자기 주도적인 학습에 도움을 줄 것이다.

• Journal of Service Research and Studies
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• v.14 no.2
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• pp.69-81
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• 2024

The The purpose of this study is to have a positive impact on the evaluation of the traditional market revitalization project by discussing the business details and implementation process of the commercial district revitalization project in depth. The research method uses practical methods for traditional market revitalization projects. First, the activation method of the place was examined through the concepts of Oldenburg's 'Third Place' and Carr et al.'s 'Five Demands for Public Space' and the theories related to non-face-to-face transactions were examined. The first study case was the commercial district revitalization project of the Cheongju Global Market Development Project(Seongan-gil Street Shopping Mall and Yukgeori traditional Market), which discussed revitalization of open space, revitalization through reproduction, and revitalization through festivals. The revitalization project through representation is a project to install a symbolic sculpture at the estimated location of the 'Namseokgyo' buried in Yukgeori traditional Market. The revitalization through the festival is the Korea Sale Festa, which is a vibrant business due to increased sales at traditional markets and shopping malls and floating population in open spaces. The second study case was the Cultural Tourism Promotion Project(Hanmin traditional Market), which discussed revitalization through the development of local brands and SNS content. In the conclusion, the relationship between the six projects and commercial district revitalization methods was discussed, and policy recommendations were made, mentioning the importance of reflecting regional characteristics in design planning. We hope that this study will be used to positively evaluate the traditional market revitalization project, showing that stakeholders are working hard to produce positive results within institutional limitations.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.77-78
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• 2015

산업화로 인하여 토지의 사막화, 물부족, 오존층 파괴, 지구 온난화 등 많은 환경문제가 발생되었으며 아직 진행 중에 있다. 이에 UN에서는 환경 규제를 강화하였으며 국제해사기구(IMO:International Maritime Organization)에서는 선박의 배기가스 규제 강화를 위하여 NOx(질소산화물) 및 SOx(황산화물)의 배기량을 줄이도록 하고 있으며 2016년부터는 본격적으로 규제하려 하고 있다. 상기의 규제 물질 중 NOx를 제거하는 선택적환원촉매(SCR:Selectivity Catalytic Reduction) 시스템은 선박의 배기가스가 지나가는 통로에 요소수(Urea)를 분무하여 $260^{\circ}C$ 이상의 높은 온도에서 요소수에 있는 암모니아가 배기가스에 있는 NOx와 반응, 결합함으로서 NOx를 질소와 산소로 분리, 제거하는 방식이다. 하지만 선박의 경우 대부분 엔진이 2행정으로 배기가스 온도가 일반적으로 $180^{\circ}C{\sim}220^{\circ}C$이기 때문에 요소수에 있는 암모니아가 배기가스에 있는 NOx와 반응하지 않아 환원률이 높지 않다. 이에 우리는 초미세기포를 이용하여 낮은 온도에서도 반응할 수 있는 요소수 및 요소수 활성화 기기를 개발하여 상기의 문제점들을 최소화 할 수 있도록 하였다. 또한 SCR 시스템의 점성유동해석을 통하여 보다 효율적인 SCR 시스템의 개발을 할 수 있도록 기여하였다.