• Architectural research
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• 제11권2호
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• pp.35-42
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• 2009

Recently, intensive urban redevelopment concentrated on new towns has reduced the number of settled population, and weakened various functions such as commercial, culture, education and welfare in old towns, and made the stagnation and declination of the entire or some parts of old towns. Urban regeneration project means renewing cities' functions in terms of physical, environmental, social, cultural, industrial and economic aspects or revitalizing the existing functions through improvement project in the entire or part of a city, which is now drawing keen attention from the public. However, urban regeneration project is huge in scale, needs long construction period and various complex facilities, and also characterized by complicated relations with many stakeholders. Due to such characteristics, there are many risks in the project. Therefore, systematic risk management is absolutely necessary to efficiently manage various risk factors inherent in urban regeneration project. The purpose of this research proposes a basic model to establish risk management plan and work process in order to help project participants to perform risk management more systematically and rationally in the development phase of urban regeneration project.

• 도시과학
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• 제11권1호
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• pp.59-68
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• 2022

This study, the meaning of historical and cultural content utilization in urban regeneration was examined and in the process, the causal relationship between each variable was verified through path analysis among physical, cultural, social, and economic factors. The purpose of this study is to find the main variables of historical and cultural content urban regeneration projects in which the moderating effect of economic factors and demographic characteristics, which are mediating effects, have a significant effect on resident participation and life satisfaction of local residents. Furthermore, by presenting a more integrated and effective urban regeneration policy plan, it is intended to ultimately contribute to the vitalization and direction of urban regeneration.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.74-81
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• 2008

물리 환경, 생활 문화, 산업 경제적 재생을 통해 도시의 기능을 회복하는 것을 목적으로 하는 도시재생사업은 다양한 사업추진전략을 달성하기 위한 다수의 프로젝트의 존재, 복잡한 이해관계자 구조, 장기간의 사업 생애주기등의 특성을 가지고 있다. 이러한 특징을 가진 도시재생사업이 성공적으로 수행되어지기 위해서는 서로 다른 프로젝트들에 관한 정보들이 유기적으로 관리되어야 하며, 다양한 정보를 독립적인 정보형태로 제공되기보다는 각 프로젝트 데이터들의 통합 관리를 통해 정보 상호간에 서로 연계하여 활용하게 함으로써 사업기간 내에 발생하는 잦은 변화요구에 대응할 수 있도록 하고 각각의 사용자들이 의사결정 시에 필요한 정보를 종합적으로 적시에 제공해줄 수 있는 수단이 필요하다. 이에 본 연구에서는 이러한 도시재생사업의 특성에 대한 기술적 해결방안의 하나로 도시재생사업에 소요되는 정보를 종합적으로 연계하여 온라인상에서 제공하는 전자매뉴얼을 제안하며, 이와 더불어 도시재생사업에서의 전자매뉴얼 개발전략에 대해서도 고찰하였다.

• 토지주택연구
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• 제8권4호
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• pp.275-283
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• 2017

The aim of this study was to present the direction of sustainable urban regeneration through the study of planning characteristics of urban regeneration reflected upon 'SymbioCity' concepts. This study was carried out through theoretical review and case study. In the theoretical review, the theory of 'SymbioCity', one of Sweden's representative urban development models linked to the concept of sustainable development, was reviewed and the framework was derived based on this theory. The framework of this study was finally derived from 'energy', 'ecology and environment', and 'historical and cultural resources'. The case study was conducted by selecting three urban regeneration projects($V{\ddot{a}}strahamnen$ BO01, Royal seaport and HafenCity Hamburg) in Sweden and Germany. Based on the results of case analysis, the direction of sustainable urban regeneration is as follows. First, in terms of energy, we should pay attention to synergy between energy and waste and energy production. Second, in terms of ecology and environment, plans should be made to maximize the use of existing resources in order to conserve natural resources and reduce energy consumption and economic costs. Third, in terms of historical and cultural resources, it is necessary to consider ways to preserve and recycle existing buildings with historical and cultural values. Finally, for the successful application of the planning elements, it is necessary to find the most appropriate application method through steady R&D in the country or project unit.

• 한국자동차공학회논문집
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• 제17권1호
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• pp.43-49
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• 2009

A catalyzed diesel particulate filter (CDPF) causes the progressive increase in back pressure of an exhaust system due to the loading of soot particles. To minimize pressure drop which is generated by CDPF, the filter should be regenerated when it collects a certain quantity of soot. It is important to know characteristics of regeneration of CDPF with various of exhaust gas temperatures and compositions. The oxidation of HC in DOC leads to increase gas temperature of DOC downstream. The increased gas temperature by DOC has an positive effect on CDPF regeneration. This study presents characteristics of regeneration of CDPF with DOC according to various gas composition, such as HC and $O_2$ concentration. The test-rig is used to control each gas composition and temperature during regeneration of CDPF. Experimental results indicate that the increased concentration of $O_2$ regenerates DPF more actively. With increasing HC concentration, the gas temperature of CDPF upstream increased due to more oxidation of HC. But excessive supply of HC leads to decrease of $O_2$ concentration in the CDPF, which makes it hard to regenerate CDPF.

• 한국자동차공학회논문집
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• 제14권4호
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• pp.68-76
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• 2006

The minimization of maximum DPF wall temperature and the fast Light-off during regeneration are the targets for the high durability of the DPF system and the high efficiency of regeneration. In order to predict transient thermal response of DPF, one-channel numerical modeling has been adopted. The effect of the ratio of length to diameter(L/D), cell density, the amount of soot loading on temporal thermal response and regeneration characteristics has been numerically investigated under two different running conditions: city driving mode and high speed mode. The results indicate that the maximum wall temperature of DPF increase with increasing 'L/D' in 'High speed mode'. For 'City driving mode', the maximum wall temperature decreases with increasing 'L/D' in the range of $'L/D{\geq}0.6'$. The maximum temperature decreases with increasing cell density because heat conduction and heat capacity are increased. It is also found that the effect of amount of soot loading on light-off time is negligible.

• 한국실내디자인학회논문집
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• 제27권1호
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• pp.21-28
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• 2018

Environmental issues had arisen following industrialization with rapid physical growth of city and its consequences: widened metropolitan areas, uncontrolled reconstructions of new metropolitan areas, many social issues, such as declines of existing metropolitan areas. Due to these issues, new development policies have been made in order to find identities and reconstruct new images of cities. This research aims to remind the meaning of conservation of modern construction and building re-use, and to identify values of modern architectures in the context of a city. Regeneration of cities is not only finding national identities, but also expecting to increase inflow of foreign travellers. However, this regeneration hasn't stayed sustainable, focusing only on short-term curing of the problem in limited areas. This work analyzes cases of modern architecture, historic buildings from various cultures: Western, Japanese, Chinese. The result of the analysis shows that the value of existing buildings and citizen participation is necessary to revitalize cities. Four characteristics have been also identified: historic relationship, spatial identity, spatial presence, and approachable efficiency. For a potential solution, cities need to be viewed from multiple perspectives to find a method to generate new vitality for a city whose values should be recognized as an asset through sustainable re-use, by transforming modern construction as a heritage.

• 한국자동차공학회논문집
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• 제17권2호
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• pp.57-66
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• 2009

In this paper, the steering characteristics of tracked vehicles are studied for the improvement of steering performance. The important design factor of military vehicles is high mobility. It is influenced by weight of a vehicle, engine capacity, power-train, and steering system. The military vehicle, which is equipped with caterpillar, has unique steering characteristics and is quite different from that of a wheeled vehicle. The steering of tracked vehicles is operated in the power pack due to different speeds of both sprockets. Under cornering conditions, power split and power regeneration are happened in the power pack. In case of power regeneration, power is transferred outside track after adding engine power and power inputted inside track from the ground. However, excessive power regeneration is transferred in the power pack. It damages mechanical elements. Therefore, it is necessary to analyze the steering system and check mentioned problem above. In this study, the detailed dynamic model of steering system is presented, which includes slippage between track and roadwheel, inertia force, and inertia moment. Finally, our model is compared with the Kitano model and we verified the validity of the model.

• 지역연구
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• 제37권3호
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• pp.47-58
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• 2021

부산광역시는 도시재생특별법이 제정되기 이전인 2010년부터 도시재생 전담조직을 신설하고 산복도로 르네상스사업과 희망마을만들기사업과 같은 지역재생사업을 자체 예산으로 추진하면서 도시정책에 커뮤니티 비즈니스의 참여를 확대해 온 선도적 지자체이다. 본 연구는 도시재생정책 초기에 부산광역시를 거점으로 한 지역밀착형 커뮤니티 비즈니스의 운영현황과 특성에 대해서 분석하였다. 그 결과 지역밀착형 커뮤니티 비즈니스의 지향점은 '지역 공동체 의식 강화'에 있는 반면, '지역주민간 상부상조 기회 제공'과 '지역 주민들의 지역사회 이해 강화' 등의 파급효과는 낮으며, '충분한 사업자금 확보'와 '필요한 인재 확보'가 운영상의 중요한 요소로 나타났다. 향후 도시재생정책에서 지역밀착형 커뮤니티 비즈니스를 활성화하기 위해서는 보조금을 확대하기보다 도시재생사업의 기능조직으로 전환하고 사업참여 기회의 확대가 필요하다.

• 대한건축학회논문집:계획계
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• 제35권10호
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• pp.83-90
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• 2019

The purpose of the present study is to confirm, through quantitative indices, changes arising with the implementation of urban regeneration projects, with a specific focus on the case of Dongnam-gu, Cheonan, one of the 13 priority rgions in urban regeneration. By utilizing quantitative data including resident population, floating population, revenue, number of small business persons, number of startup companies, and number of licensed buildings, the study confirmed changes in Dongnam-gu and other urban regeneration areas. The study compared monitoring results and implemented project policies to confirm changes within the area as a result of project implementation. Additionally, resident perception toward business districts was surveyed to confirm changes in perception and opinion, and monitoring indices were used to confirm changes as a result of project implementation. Accordingly, the study presented a plan to carry out the assessment of urban regeneration projects, which can be employed as data for conducting future urban regeneration projects. Urban regeneration projects are carried out for the long-term. Therefore, based on monitoring and investigative data, they require constant policy suggestions and periodic monitoring in accordance with changes resulting from project implementation. With regards to the effective range of urban regeneration projects, the study confirmed the possibility of an effect not only in the area of project implementation but also in surrounding areas. However, because the study merely confirms changes in Dongnam-gu, Cheonan, additional research is necessary to ascertain assessment plans suitable to the different types and regional characteristics of urban regeneration projects.