• Steel and Composite Structures
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• 제48권3호
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• pp.321-333
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• 2023

This paper proposes a comprehensive investigation on lateral stiffness of corner-supported steel modular frame using splice connection. A full-scale modular frame with two stacked steel modules under lateral load is tested. Ductile pattern in the transfer of lateral load is found in the final failure mode. Two types of lateral stiffness, including tangent stiffness and secant stiffness, are defined from the load-displacement due to the observed nonlinearity. The difference between these two types of stiffness is found around 20%. The comparisons between the experimental lateral stiffness and the predictions of classical methods are also conducted. The D-value method using hypothesis of independent case is a conservative option for predicting lateral stiffness, which is more recommended than method of contraflexural bending moment. Analyses on two classical short-rod models, including fix-rod model and pin-rod model, are further conducted. Results indicate that fix-rod model is more recommended than pin-rod model to simplify splice connection for simulation on lateral stiffness of modular frame in elastic design stage.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.267-277
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• 2020

The present research evaluates the public engagement approach in various project stages. Hong Kong had long been criticized as top-down and executive-led jurisdiction by overlooking the importance of cultural heritage and public concerns on public projects. It was suggested to the government to engage public and provide sufficient public consultation. Thereby, the government announced a series of revitalization and conversion measures in Policy Address in 2008. To carry out the measures, there were voices, because of diverse and sometimes conflicting interests, over the effect of revitalization project. On the other hand, studies reveal that there are benefits of revitalization and enhancement of public engagement approach. In pursuit of the subject, the present research aims at studying the Central Market as a case study pilot project. In October 2009, the Policy Address announced that the Central Market be revitalized. Tasked to implement the project, Urban Renewal Authority (URA) continued to adopt the people-oriented approach as the guiding principle in its core business and in heritage preservation and revitalization so as to create a sustainable development. Between government and the public, URA acts as a bridge for communication. As between URA and the public, URA conducted public consultation, set up an ad-hoc committee in January 2016 to be in charge of the project and will continuously inform the government and public with the updates and project progress. The main objectives of the present research are to assess the advantages and challenges in different stages of public engagement approach, to evaluate the engagement system, to give a comprehensive view for participation of stakeholders, and to find out effective strategies to enhance civil engagement. Research was achieved through interviews to key persons in the project, questionnaire that was distributed to community and experts in the field. Case Study of the Central Market was studied and investigated using different sources, such as newspapers, journals, etc, to evaluate the degree of public engagement in the project. Both detailed qualitative methodological approaches of interview, questionnaire, and case study, act as a synergy to demonstrate the research objectives and provide the comprehensive perceptions on the revitalization project. The results show that public participants in revitalized project have generated considerable value enhancements to social-cultural, environmental, political and economic aspect. This study provides valuable insights that the public participation can make positive contribution to sustainability in the city. The findings indicate that no any single system is flawless therefore seeking both public opinions and professional advices are also important as a comprehensive approach to achieve higher sustainability of the building.

• 대한공간정보학회지
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• 제23권4호
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• pp.35-41
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• 2015

감정평가방법에는 수익방식, 원가방식, 비교방식이 있다. 본 연구는 감정평가방법 중 토지의 가격을 평가할 때 주로 사용하는 비교방식을 수치화하여 감정평가 시 적용할 수 있는 방법을 제시하는 것이다. 비교방식은 부동산의 가치를 거래사례부동산과 평가대상 부동산의 시간적 격차, 공간적 격차, 시공간적 격차를 비교 조정함으로써 사례 부동산 가격으로부터 대상 부동산 가격을 산정하는 것이다. 감정평가 실무에서는 대체적으로 토지의 경우에 비교 방식을 사용한다. 사례를 기준으로 할 때 사례가격, 시점수정, 지역수정, 개별요인으로 가치를 평가하며 공시지가기준의 경우 공시지가, 시점수정, 지역수정, 개별요인으로 평가한다. 이 중 개별요인은 개별적 특성을 비교하는 중요한 과정으로서 감정평가사의 주관적 판단이 개입 할 수 있는 요소이다. 전문가인 감정평가사의 판단이 대체적으로 정확하지만 주관적인 판단이기 때문에 감정평가사에 따라 의견 차이가 있을 수 있으므로 감정평가 분쟁이 일어나기도 한다. 본 논문에서는 개별요인의 구성요소인 가로조건, 접근조건, 획지조건을 GIS분석을 통하여 감정평가의 주관적 판단을 수치화하여 적용할 수 있는 방법을 제시하고자 한다.

• 한국디지털건축인테리어학회논문집
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• 제10권2호
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• pp.5-12
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• 2010

Unlike housing development project that can ensure profit by selling built units, a hotel development depends on long-term business operation to be profitable due to characteristics of service industry. The expected cash flow has substantial uncertainty depending on room occupancy rate and room charge. Thus, even after construction is complete, business risk tends to rise. It is necessary to ensure strategic response to uncertainty in future value of a hotel. The objective of the study is to explore strategic measures to deal with risk and uncertain future value in hotel development project by adopting abandonment option, which is a type of real options. The case in analysis had sevenyears of project period: Two years for construction, and five years for operation; a plan was made to sell the hotel after five years' of operation. For the research purpose, option value ofrecoverable investment amount was estimated, and value of abandonment option was KRW 124.921 billion. When abandonment option is applied, the project value was deemed to be KRW 120.592 billion. Generally, the amount of loss is enormous when a real estate project like a hotel development fails, and therefore, application of option is expected to be an effective measure to leverage uncertainty of a project.

• 대한공간정보학회지
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• 제23권1호
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• pp.55-63
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• 2015

최근 부동산거래의 투명성과 공평과세의 기반을 마련하고자 부동산 실거래가격의 활용에 대한 필요성이 증가하고 있다. 본 연구는 부동산 실거래가격의 활용과정에서 실거래 미발생지점에 대한 효과적인 가격추정을 위해 실거래 가격 및 고도, 경사도를 통합한 공동크리깅의 적용 가능성을 연구하였다. 이를 위해 경북 영천시의 2012년 1월부터 2014년 6월까지의 실거래 자료를 활용하여 실거래가격을 추정하였으며, 이를 정규크리깅 추정결과와 비교하였다. 추정된 가격과 2,575개 검증 지점의 실거래가격 사이 평균 오차, 평균제곱근오차 등을 분석한 결과 정규크리깅에 비해 공동크리깅 결과가 실거래가 추정과 현실화 측면에서 모두 효과적인 것으로 나타났다. 이는 지가형성에 영향을 미치는 고도, 경사 등의 영향요인이 고려되는 공동크리깅이 실거래가 추정에서 더 효과적임을 보여준다.

• KIEAE Journal
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• 제7권5호
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• pp.115-120
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• 2007

The purpose of the study is to establish a concept of property development planning process and factors by analyzing the several case studies, which prior proposed the highest and best use development of property. The value of property is dependent on the circumstances and the timing. Real property development is essential to develop in the highest and the best. The prior concepts of the highest and best use focused on the real estate appraisal, but these studies aroused an interest that related the highest and best use concept as a determinant of property development. As a results, this study suggests the process and the check points of property development planning phase. The first step is having a thorough grasp of the status of property. The Second step is the circumstantial analysis including legal restriction, locational environment, real estate market and economic conditions. The next step is, in accordance with these analysis, setting up the development concept and alternatives. Through the feasibility studies, we can make a choice the highest and best use development plan. In these days, the importance of development strategies such as design exceptionality and plan management are increased. Therefore, the integrated plan for the property development is very important.

• Design & Manufacturing
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• 제16권4호
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• pp.52-59
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• 2022

Currently, Korea is an aging society and is expected to become a super-aged society in about four years. X-ray devices are widely used for early diagnosis in hospitals, and many X-ray technologies are being developed. The development of X-ray device technology is important, but it is also important to increase the reliability of the device through accurate data management. Sensor nodes such as temperature, voltage, and current of the diagnosis device may malfunction or transmit inaccurate data due to various causes such as failure or power outage. Therefore, in this study, the temperature, tube voltage, and tube current data related to each sensor and detection circuit of the diagnostic X-ray imaging device were measured and analyzed. Based on QC data, device failure prediction and diagnosis algorithms were designed and performed. The fault diagnosis algorithm can configure a simulator capable of setting user parameter values, displaying sensor output graphs, and displaying signs of sensor abnormalities, and can check the detection results when each sensor is operating normally and when the sensor is abnormal. It is judged that efficient device management and diagnosis is possible because it monitors abnormal data values (temperature, voltage, current) in real time and automatically diagnoses failures by feeding back the abnormal values detected at each stage. Although this algorithm cannot predict all failures related to temperature, voltage, and current of diagnostic X-ray imaging devices, it can detect temperature rise, bouncing values, device physical limits, input/output values, and radiation-related anomalies. exposure. If a value exceeding the maximum variation value of each data occurs, it is judged that it will be possible to check and respond in preparation for device failure. If a device's sensor fails, unexpected accidents may occur, increasing costs and risks, and regular maintenance cannot cope with all errors or failures. Therefore, since real-time maintenance through continuous data monitoring is possible, reliability improvement, maintenance cost reduction, and efficient management of equipment are expected to be possible.

• Architectural research
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• 제9권2호
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• pp.27-35
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• 2007

Our nation has a problem with discrimination of income distribution and inefficient of resources distribution caused by real estate price rising from a sudden economy growth and industrialization. Specially, in recent years, there is a great disparity of apartment price between the north and south of the Han river. Because the housing price is decided by the immanent value of a house and neighborhood effects of the regional where the house is situated, the housing price is occurred difference. The purpose of study was to analyze the influence of various factors of housing price. Also, this study tried to predict real estate market and to establish previous effective real estate policy. In this study, we analyzed the differences of housing price determinants about apartment developments between the north and south of the Han river, and found the important factors that affect the housing price using Structural Equation Modeling(SEM). As a result of this study, the older the buildings are, the more the housing price and the housing price rising ratio have increased, in Gang Nam area. This reason is that these have large possibility to be reconstructed and many convenient facilities, in this area. In the case of Kang Buk area, the increase rate of housing price are so low that they couldn't take effect on the housing price and they were declined. So to speak, constructing the infrastructure which takes effect on the increase rate of housing price is very urgent.

• 지역연구
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• 제36권1호
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• pp.37-50
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• 2020

이 연구는 투자이론에서 활용되고 있는 토빈의 Q 개념을 적용하여 투자이익을 측정하고 이를 통해 서울 주택시장을 이해하고자 한다. 구체적으로 서울시 아파트와 연립·다세대주택을 대상으로 2010년부터 2018년까지 투자이익을 추정하고 공간계량모형을 이용하여 투자이익에 영향을 주는 요인들을 살펴보았다. 투자이익은 실거래가격에서 대체비용(토지비용+건축비용)을 빼는 방식과 실거래가격 대비 대체비용의 비율로 각각 추정하였다. 분석결과를 보면, 투자이익은 2018년으로 갈수록 더 커졌고 강남·서초구 및 한강 주변에서 투자이익이 높게 나타났으나 투자이익의 시공간적 변화양상은 아파트의 경우 뚜렷한 반면에 연립·다세대주택은 산발적·국지적으로 나타났다. 공간계량모형 분석결과는 주택유형과 상관없이 고밀·신축개발이 많은 지역에서 투자이익이 높았다. 이 연구의 접근방법과 결과는 향후 주택 공급 정책, 투자이익 환수, 지역 경쟁력 측정, 가격 거품 측정 등에 대한 논의를 위한 기초 자료가 될 것이다.

• 법제연구
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• 제41호
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• pp.261-302
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• 2011

유치권은 타인의 물건이나 유가증권을 점유한 자가 그 물건이나 유가증권에 관하여 생긴 채권을 가지는 경우에 그 채권의 변제를 받을 때까지 목적물을 유치할 수 있는 권리를 말하는 것으로서, 이는 공평의 견지에서 점유자의 채권을 특히 보호하여 '채권자 평등의 원칙'을 깨뜨리려는 데에 그 취지가 있다. 우리 민법상 이러한 유치권은 일정한 요건을 갖추면 법률상 당연히 성립하나 목적물의 교환가치에 대한 지배권능이나 우선변제권이 없는 불완전한 담보물권으로서 저당권과 달리 등기부에 공시되지 않는다는 특징 때문에 부동산경매절차에서 많은 문제점을 안고 있다. 또한 부동산 유치권은 경매절차에서 소멸하는 것이 아니라, "유치권에 따른 피담보채권액을 변제받을 때까지 매수인(경락인)에게 대항할 수 있다"고 규정을 함으로써(민사집행법 제91조 제5항)실정법으로는 우선변제권이 없지만, 실질적으로는 초 강력적 우선변제적 효력을 매수인에게 주장함으로서 선 순위 담보권자와 압류권자 등에게 예상하지 못한 손해와 불공정한 법률관계로 이해관계인에게는 채권자 평등의 원칙, 즉 공평의 원칙을 깨뜨리는 주요 원인으로 작용하고 있다. 이 모든 문제는 부동산에 대한 물권변동은 현행법에 의하여 등기에 의하여 공시됨에도 불구하고 유치권만은 점유라는 불확실한 공시방법으로 성립하고, 부동산경매에서 유치권자의 대항력이 학설상 대립이 있어 명확하지 않으며, 민사집행법이 유치권에 대하여 인수주의(민사집행법 제91조제5항)를 인정함으로 인하여 발생하고 있다. 따라서 본고에서는 유치권의 성립에 근본적인 문제가 되고 있는 부동산 유치권의 공시제도와 견련관계를 살펴보고, 이어서 유치권의 대항력에 대한 학설 그리고 판례를 검토한 후 이에 대한 문제점 들을 개선하기 위한 입법론적인 개선방안을 검토해 보기로 한다.