title: Flood resilience technology in Europe: identifying barriers and co-producing best practice

authors: White, Iain

subjects: Co-production

abstract: Flood resistance (FRe) and resilience technologies hold considerable potential to limit the damage caused by flooding. Resistance technologies generally aim to keep water out of buildings, while resilient measures may allow ingress but create the conditions for a quicker recovery of individuals, communities and buildings. However, despite their potential contribution to flood risk management (FRM), their use remains uncommon. This paper draws on pan‐European research of local communities at risk and their representatives, and professional stakeholders working at a more strategic scale, to explore the barriers to use and describe the co‐production of new best practice. It interrogates the issues in terms of level of awareness, degree of acceptance and the integration into decision making. We found that even where awareness was high, there was a reluctance to use these measures. This is due to issues related to comparability, costs, installation, performance and maintenance. The research also revealed that FRM policy and practice has struggled to incorporate this emergent approach and that many individuals at risk are reluctant to take responsibility and protect their properties in this way. In response, this paper details how good practice guidance – the ‘Six Steps approach’ – was co‐produced with key stakeholders to facilitate the wider contribution of FRe to FRM.

text: Flood resilience technology in Europe: identifying barriers and co-producing best practice Flood resistance (FRe) and resilience technologies hold considerable potential to limit the damage caused by flooding. Resistance technologies generally aim to keep water out of buildings, while resilient measures may allow ingress but create the conditions for a quicker recovery of individuals, communities and buildings. However, despite their potential contribution to flood risk management (FRM), their use remains uncommon. This paper draws on pan‐European research of local communities at risk and their representatives, and professional stakeholders working at a more strategic scale, to explore the barriers to use and describe the co‐production of new best practice. It interrogates the issues in terms of level of awareness, degree of acceptance and the integration into decision making. We found that even where awareness was high, there was a reluctance to use these measures. This is due to issues related to comparability, costs, installation, performance and maintenance. The research also revealed that FRM policy and practice has struggled to incorporate this emergent approach and that many individuals at risk are reluctant to take responsibility and protect their properties in this way. In response, this paper details how good practice guidance – the ‘Six Steps approach’ – was co‐produced with key stakeholders to facilitate the wider contribution of FRe to FRM.

year: 2018

title: Mining frequent closed graphs on evolving data streams

authors: Bifet, Albert

subjects: computer science

abstract: Graph mining is a challenging task by itself, and even more so when processing data streams which evolve in real-time. Data stream mining faces hard constraints regarding time and space for processing, and also needs to provide for concept drift detection. In this paper we present a framework for studying graph pattern mining on time-varying streams. Three new methods for mining frequent closed subgraphs are presented. All methods work on coresets of closed subgraphs, compressed representations of graph sets, and maintain these sets in a batch-incremental manner, but use different approaches to address potential concept drift. An evaluation study on datasets comprising up to four million graphs explores the strength and limitations of the proposed methods. To the best of our knowledge this is the first work on mining frequent closed subgraphs in non-stationary data streams.

text: Mining frequent closed graphs on evolving data streams Graph mining is a challenging task by itself, and even more so when processing data streams which evolve in real-time. Data stream mining faces hard constraints regarding time and space for processing, and also needs to provide for concept drift detection. In this paper we present a framework for studying graph pattern mining on time-varying streams. Three new methods for mining frequent closed subgraphs are presented. All methods work on coresets of closed subgraphs, compressed representations of graph sets, and maintain these sets in a batch-incremental manner, but use different approaches to address potential concept drift. An evaluation study on datasets comprising up to four million graphs explores the strength and limitations of the proposed methods. To the best of our knowledge this is the first work on mining frequent closed subgraphs in non-stationary data streams.

year: 2011

title: Countering gentrification in Tāmaki Makarau: Towards a framework for urban environmental justice

authors: Terruhn, Jessica

abstract: This policy brief argues for urban policies that actively aim to end gentrification.

Gentrification is intimately tied to state-led processes of urban renewal. Though historically understood as the displacement of low-income households as an unfortunate byproduct of socioeconomic and demographic neighbourhood change, contemporary gentrification is constituted by profit-driven investment decisions that erase undervalued neighbourhoods and their communities in the name of urban renewal (variously referred to as redevelopment, regeneration, renaissance, or revitalisation).

These processes of gentrification fundamentally contribute to environmental injustice. At the same time as creating ‘zones of abundance’, neighbourhood regeneration projects simultaneously (re-)create ‘zones of neglect and sacrifice’, which are burdened with environmental risks. As low-income and ethnic minority households are more likely to either reside in or to be displaced into these neighbourhoods, they are disproportionately exposed to environmental risk factors.

Moreover, gentrification enables and legitimises the exclusion of marginalised communities in multiple ways: 1) it devalues existing places and their residents in favour of regeneration, 2) it displaces longtime residents from regenerated neighbourhoods because of increasing property values, and/or 3) it alienates longtime residents as neighbourhood aesthetics, amenities and services change and become unaffordable and/or irrelevant.

As gentrification contributes to low-income households’ experiences of precarity and severs community ties and place attachments, it generates significant costs to personal and community health and wellbeing as well as social cohesion. The recommendations articulated in this brief emphasise the importance of transformative policy solutions that actively counter gentrification.
These include:
• Equitable investment in urban infrastructure
• Prioritising affordable housing
• Ensuring accessible transportation
• Empowering local communities
• Implementing a Te Tiriti o Waitangi approach to policy development

text: Countering gentrification in Tāmaki Makarau: Towards a framework for urban environmental justice This policy brief argues for urban policies that actively aim to end gentrification.

Gentrification is intimately tied to state-led processes of urban renewal. Though historically understood as the displacement of low-income households as an unfortunate byproduct of socioeconomic and demographic neighbourhood change, contemporary gentrification is constituted by profit-driven investment decisions that erase undervalued neighbourhoods and their communities in the name of urban renewal (variously referred to as redevelopment, regeneration, renaissance, or revitalisation).

These processes of gentrification fundamentally contribute to environmental injustice. At the same time as creating ‘zones of abundance’, neighbourhood regeneration projects simultaneously (re-)create ‘zones of neglect and sacrifice’, which are burdened with environmental risks. As low-income and ethnic minority households are more likely to either reside in or to be displaced into these neighbourhoods, they are disproportionately exposed to environmental risk factors.

Moreover, gentrification enables and legitimises the exclusion of marginalised communities in multiple ways: 1) it devalues existing places and their residents in favour of regeneration, 2) it displaces longtime residents from regenerated neighbourhoods because of increasing property values, and/or 3) it alienates longtime residents as neighbourhood aesthetics, amenities and services change and become unaffordable and/or irrelevant.

As gentrification contributes to low-income households’ experiences of precarity and severs community ties and place attachments, it generates significant costs to personal and community health and wellbeing as well as social cohesion. The recommendations articulated in this brief emphasise the importance of transformative policy solutions that actively counter gentrification.
These include:
• Equitable investment in urban infrastructure
• Prioritising affordable housing
• Ensuring accessible transportation
• Empowering local communities
• Implementing a Te Tiriti o Waitangi approach to policy development

year: 2025