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Rethinking Brownfield Redevelopment features: Fuzzy Delphi Method

Rethinking Brownfield Redevelopment features: Fuzzy Delphi Method. Brano Glumac. Intro. Two basic ways to extract the data Database collected from final users Database collected from experts. Method. Delphi Method helps the group thinking process From (Dalkey and Helmer, 1963)

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Rethinking Brownfield Redevelopment features: Fuzzy Delphi Method

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  1. Rethinking Brownfield Redevelopment features:Fuzzy Delphi Method Brano Glumac

  2. Intro • Two basic ways to extract the data • Database collected from final users • Database collected from experts

  3. Method • Delphi Method helps the group thinking process • From (Dalkey and Helmer, 1963) • Procedure: Brainstorming, Narrowing Down, Ranking

  4. Research task • What are the most important features for Brownfield Redevelopment? • Features • Brownfield (Alker, 2000) 4-1-2020 PAGE 3

  5. Fuzzy Delphi • What is it? • Derived from the traditional Delphi technique and Fuzzy Set theory (Murray, Pipino, and Gigch 1985) • Fuzziness lack of definite or sharp distinctions • Benefits • Incorporate uncertainty due to human factor • Less questionnaires

  6. Fuzzy Delphi Procedure

  7. Fuzzy Delphi Calculation Steps • Steps: • Validate features • Collect evaluation score for each feature • Set-up fuzzy number (Klir and Yuan, 1995) • Defuzzification S • Setting a threshold α

  8. Survey Results

  9. Survey Results Ratings of Independent developers 1 - A14 - Administrative support - 8,20 2 - A4 - Embedded into the urban fabric -8,02 3 - A2 - Accessibility - 7,75 4 - A19 - Potential for different land-use - 7,61 5 - A17 - Support of surrounding users - 7,50 6 - A12 - Existing neighborhood image - 7,39 7 - A15 - Approval process - 7,16 Rating Of Contractors 1 - A19 - Potential for different land-use - 7,69 2 - A14 - Administrative support -7,52 3 - A10 - Heritage - 7,23 4 - A13 - Ownership - 7,17 Overall Rating 1 - A19 - Potential for different land-use - 7,61 2 - A14 - Administrative support - 7,54 Rating of Governmental Agencies 1 - A19 - Potential for different land-use - 7,96 2 - A14 - Administrative support - 7,33 3 - A2 - Accessibility - 7,21 4 - A10 - Heritage - 7,04 5 - A16 - Support of local users - 7,00

  10. Discussion • The selection procedure and importance of the Brownfield redevelopment features • Different priorities for different expert groups

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