The researchers explore the current urban redevelopment problems in Taiwan old urban centers. Based on an indicator system framework, this study proposes a regeneration model-a performance evaluation method for a livable urban district, composed of four constructs, and 21 general indicators and 62 policy-making indicators. The four constructs are land use sustainability; transit oriented development (TOD) pattern, district composition, and architectural typology and estate. Considering this framework feasibility, the researchers recruited a panel of experts for judgment of priority for the indicator system in two phases of questionnaires. The first phase uses the fuzzy Delphi method (FDM) for experts to decide each policy-making indicator and the degree of importance of that indicator. The second phase uses the analytic hierarchy process (AHP) to determine the priority of the four constructs and that of each general indicator. Since panel experts from various disciplines and regions evaluate this indicator system with priorities, the current study discusses the variance of priorities caused by different panel experts. This AHP framework serves as a guideline for local government to proceed with regeneration plans toward livable districts, or a framework to evaluate the performance of regenerated old urban districts.Keywords: urban village; a livable urban district; a framework of indicator system; analytic hierarchy process
Tainan is a city full of architectural diversity, with nearly four hundred years of history since the Dutch colonization in 1624. The Taiwanese called it Fucheng, which means "the first capital built in Taiwan." During the urbanization process, the vernacular spatial characteristics became concealed as a result of the urban renovation plan during the Japanese colonial period. The authors wish to explore this vernacular quality and make it the aesthetic criteria for the old town district in Tainan. First, urban conservation and aesthetic zoning plans in western countries are reviewed for reference. Second, the authors make an analysis of the morphological structure in the old town district, define the exterior layer and interior layer of typical old town blocks, and illustrate -with spatial characteristics, spatial deficiencies, urban context gaps and lost space -the composition of temple plazas and land use patterns, etc. Third, based on the morphology of aesthetic zoning, redevelopment of the historic landscape by both accentuating the streetscape and rezoning inside the old town blocks is proposed. In addition, the authors suggest viewshed control and graded density to recompose a pedestrian village with a fluid open space network. After the aesthetic zoning techniques are fully discussed and understood, the authors finally encourage marketing and an autonomous community as means toward the sustainable development of the old town district.
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