Previous studies have demonstrated that vegetation and increased air flow can mitigate air temperature by employing numerical models, satellite remote sensing or Computational Fluid Dynamics simulations. This study aimed to examine how layouts of vegetation space and wind flow affect microclimate air temperature, which directly affects city dwellers’ thermal comfort in summer, in a real apartment housing complex in Seoul, South Korea. To do this, a Reynolds-averaged Navier–Stokes model was utilized, combined with a finite volume method CFD simulation, and which measured transpirational cooling effects of vegetation by comprehensively considering air humidity by transpiration, as well as wind flow of the surroundings, to reflect actual conditions of urban environments. Based on the computational model, nine scenarios including elevated building designs were simulated. The findings of this study are as follows: First, different layouts of vegetation and wind flow clearly affected microclimate air temperature in the housing complex. Second, when the total area of vegetation was the same, it was more effective to reduce air temperature by placing it in small units rather than concentrating it in one place, and placing small vegetation spaces close to buildings was better than locating them between buildings. Third, it was apparent that an elevated space works as a wind path, leading to increasing wind velocity. However, it was revealed that wind flow does not always positively affect hot temperatures.
University-community partnerships provide opportunities for collaborations and meaningful engagement with community partners, in order to promote sustainable community development. To date, studies on university-community partnerships have largely neglected partnership potential and readiness prior to partnership formation. These factors enable expectations and targets to be negotiated and potential problems to be anticipated, prior to any formal collaboration. Hence, this study investigates the optimal preconditions—including environment, resources, and motivation—to facilitate successful university-community collaboration for local urban planning. Specifically, a sample of local government units (LGUs) and universities in the Calabarzon region of the Philippines were interviewed and observed to determine their needs and access to planning resources at universities, as well as factors that would ensure sustained partnerships. The results show that there is a need for university-community partnerships in local planning, since LGUs have limited technical capacity in preparing comprehensive land use plans, particularly with respect to data analysis, technical writing, project development, and hazard mapping. Conversely, LGUs have more financial resources than universities. Local universities were determined to be uniquely suited to meet the technical and human resource needs of LGUs. Importantly, though, previous partnership experience was found to dramatically influence both parties’ decisions regarding whether or not to pursue a partnership. Accordingly, there is a need to temper the desires and expectations of partner organizations, and lay down the foundations of sustainable university-community partnership prior to partnership formation. Toward this end, policies that bolster partnership institutionalization, funding, and systematic monitoring and evaluation systems can enhance the utility of such partnerships moving forward.
Since the 1970s, the South Korean government has been redeveloping blighted residential environments and adopting large-scale redevelopment policies to solve urban housing-related problems. However, it is difficult to designate areas for redevelopment and identify areas where redevelopment is currently unfeasible. This study establishes a framework to support decision-making in a selection of housing renewal districts. The proposed Residential Environment Maintenance Index (REMI) overcomes the limitations of existing indicators, which are often biased toward physical requirements. Using this, we rationalize the designation of maintenance areas by considering both physical and social requirements and outline the renewal district designation procedure. To derive REMI, we used an analytic hierarchy process analysis and estimated the index's reliability by clarifying the relative importance and priority of the indicators based on surveys of 300 subject matter experts. We analyzed various simulations by applying REMI at sites where maintenance is currently planned or discharged in Seoul. These reveal that the total number of urban renewal projects can be adjusted by adjusting the number of renewal district designations through the proposed REMI according to the economic situation. The results have implications for understanding REMI's possible application and flexible management at the administrative level to pursue long-term sustainable development.Sustainability 2019, 11, 5876 2 of 20 of housing types [7], deletion of existing urban tissue [8], low resettlement rate of indigenous people [5], and destruction of communities' unique characteristics [9]. To systematically and efficiently manage and maintain the residential areas that have deteriorated and need improving, various projects have been implemented under the government's initiative [7]. Accordingly, the "Act on the Improvement of Urban Areas and Residential Environments" (hereinafter, the IUARE Act) [10], which encompasses a systematic management plan for improving deteriorated residential areas, was enforced in 2002. The IUARE Act contributes to the improvement of urban environments and the quality of residential life by integrating housing development projects and housing reconstruction projects, regenerating declining infrastructure, and renewing deteriorated housing infrastructure. The IUARE Act details four steps to implement an urban renewal project (Figure 1). The first step is to develop a master plan for a housing redevelopment or reconstruction project. In the second step, the maintenance area is designated. Maintenance of an area must form a part of any urban renewal project. In other words, areas that are intended to be redeveloped to improve the residential environment should first be designated as maintenance areas. In the second step, approval is obtained to form the Promotion Committee, and the establishment of a renewal association is authorized with the consent of at least 75% of the landowners. The third step involves issuing an urban renew...
The result can be summarized as follows. First, the following periodically changing characteristics were examined:roof form(gambrel/hipped-flat-gable), structure of roof and wall(wood-framed-cement masonry-RC -Light iron framed), roof material(thatched-tiled-slate-cement/steel sheet-asphalt/sandwich panel/mortar water-proofing), wall material(clay plaster/lime plastered-dressing tile/bricks-painting on the cement plastering-native stone dressing/siding/tile), fence material(masonry of stone and cement bricks), and courtyard materials(clay and concrete). Secondly, the regionally changing characteristics of those elements, rural housing structure, roof form, roof structure material, wall finishing material, fence and courtyard material in the outer space, differed according to the location of rural housing, i.e.north, middle, south region. The changing characteristics of both the roof structure and wall structure are similar to those of the three regions.
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