What is the triple helix?The triple helix (3H) of university-industry-government relations has become one of the most popular innovation models in the lasttwo decades. What is the relevance for cities? How can they grow their economies using triple helix approaches? What can we learnfrom cases across Europe and from URBACT networks that dealt with this theme?
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This paper puts forward a conceptual framework to analyse emergence and the development of planned knowledge locations in cities (science and technology parks, creative factories, knowledge hubs, etc.). It argues that the study and the practice of developing these precincts can benefit from explicitly considering the broader territorial context, the time dynamics and the co-evolutionary processes through which they unfold. The advantages of such as framework are illustrated with the support of two European knowledge locations: Arabianranta (Helsinki, Finland) and Biocant (Cantanhede, Portugal).
Increasing urbanization and the effects of climate change will bring new challenges for cities, such as energy saving and supply of renewable energy, preventing urban heat islands and water retention to deal with more frequent downpours. A major urban surface, the surface of roofs, is nowadays hardly exploited and could be used to make cities more ‘future proof’ or resilient. Many Dutch municipalities have become aware that the use of green roofs as opposed to bituminous roofs positively contributes to these challenges and are stimulating building-owners to retrofit their building with green roofs. This study aims at comparing costs and benefits of roof types, focused on green roofs (intensive and extensive) both on building- and city scale. Core question is the balance between costs and benefits for both scales, given varying local conditions. Which policy measures might be needed in the future in order to apply green roofs strategically in regard to local demands? To answer this question the balance of costs and benefits of green roofs is divided into a public and an individual part. Both balances use a strengths, weaknesses, opportunities and threats framework to determine the chance of success for the application of green roofs, considering that the balance for green roofs on an individual scale influences the balance on a public scale. The outcome of this combined analyses in the conclusion verifies that a responsible policy and a local approach towards green roofs is necessary to prepare the city sufficiently for future climate changes. http://dx.doi.org/10.13044/j.sdewes.d6.0225
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