Browsing by Author "Egusquiza, Aitziber"
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Item ADAPTATION TO FLOODING EVENTS THROUGH VULNERABILITY MAPPING IN HISTORIC URBAN AREAS(2018-03-06) Gandini, Alessandra; Prieto, Iñaki; Garmendia, Leire; San-José, José Tomás; Egusquiza, Aitziber; LABORATORIO DE TRANSFORMACIÓN URBANA; Tecnalia Research & InnovationHistoric urban areas are complex and inter-reliant systems, vulnerable to natural hazards. Over the recent years, the increase frequency in extreme precipitation events and sea-level rise, have impacted on a large number of historic areas, growing concern over disaster mitigation related to climate change. Most of the changes in the climatological indicators may have adverse impacts on historic areas, leading to physical, social and cultural consequences and should be included in urban planning practice. The importance of addressing cultural heritage in disaster risk has also been included in The Sendai Framework, considering the dimensions of vulnerability, adaptive capacity and exposure through systematic evaluation. Urban planning decisions involve an understanding of complex interactions between different aspects of the city, in its constructive, social, economic, environmental and cultural system. The analysis of these interactions requires a systemic approach as the components operate on different spatial and temporal scales and generate a large amount of data. This information can be used to determine the vulnerability of historic areas by assessing it at the building level, through the creation of typologies representing the building stock, often characterized by similarities and common constructive elements. The comprehension of the information can be supported and homogenized by a multi-scale urban model, to facilitate the understanding of interactions and the link among the different disciplines involved. This paper describes the methodology proposed for vulnerability mapping in historic urban areas, by using a categorization method supported by an information strategy and a multiscale urban model.Item Conceptual and Operational Integration of Governance, Financing, and Business Models for Urban Nature-Based Solutions(2021-10-28) Egusquiza, Aitziber; Arana-Bollar, Maider; Sopelana, Amaia; Babí Almenar, Javier; Tecnalia Research & Innovation; LABORATORIO DE TRANSFORMACIÓN URBANA; SGGovernance, financing, and business models are deeply interlinked and relevant for the successful implementation of urban nature-based solutions (NBS). However, during the definition of urban NBS projects the importance and interrelation of these models are usually neglected. To overcome this limitation, this paper presents an overarching framework (conceptual and operational) and a derived preselection web tool which interrelate governance, financing, and business models for NBS projects. First, based on recent literature, governance, financing, and business models that could be applied to NBS were mapped, and their integration proposed. Later, key contextual factors influencing NBS implementation were identified. They form the basis of a WHAT–WHO–HOW framework that structures the links between specific NBS projects, their implementation context, and the most suitable models. From that framework, and an analysis of 50 successful NBS case studies, a suitability matrix was developed with known models. The matrix allows pairing types of NBS and their initiating actors with suitable financing and governance models. Lastly, a tailored NBS business model canvas was designed to evaluate the business model components. From the overarching framework, the preselection web tool was created to guide decision-making on suitable governance, finance, and business models in the early phases of NBS projects.Item GIS-3D Platform to Help Decision Making for Energy Rehabilitation in Urban Environments(2019-06-21) Izkara, Jose Luis; Egusquiza, Aitziber; Villanueva, A.; Tecnalia Research & Innovation; LABORATORIO DE TRANSFORMACIÓN URBANAOne of the main current challenges of European cities is to become energy self-sufficient entities. One of the vectors for this challenge is to improve the energy efficiency of the buildings and to promote the generation of renewable energies in the urban environment. The article describes a tool based on GIS-3D technologies to support the identification of the energy rehabilitation potential of neighbourhoods based on the introduction of renewable energies. The platform is based on a urban 3D model that collects the geometry of buildings, together with relevant information for the identification of rehabilitation opportunities (e.g. surfaces, heights, orientations and slopes). The project includes the generation of a cloud-based repository, which incorporates active and passive innovative solutions with metrics that allow the comparison of the solutions and the applicability of them to the real environment. The identification of rehabilitation opportunities combines information resulting from the diagnosis of the current energy performance of the district's buildings with the potential for renewable generation in the area. A multicriteria analysis process facilitates the identification of the most appropriate rehabilitation solutions for the analysed environment based on different criteria as energy, cost or applicability. The result can be visualized through a web tool that combines 2D and 3D information, with comparative information in a quantitative and geo-referenced manner. The flexibility of the architecture allows the application of the same approach to different urban challenges as the application of energy conservation measures to protected historic urban areas.Item How Relevant is Energy Efficiency in The Marketing of Homes? Evidence from Real Estate Agents in Spain(2019-09-18) Marmolejo-Duarte, Carlos; Spairani, Silvia; Moral, Consuelo del; Delgado, Luis; Egusquiza, Aitziber; Ai, Chen; LABORATORIO DE TRANSFORMACIÓN URBANAIn order to foster informed transactions, the Energy Performance of Buildings Directive has made it mandatory to get an Energy Performance Certificate in the marketing of the Communitarian Real Estate. Due to energy savings and environmental preservation, it is expected that efficient buildings do receive an increased willingness to pay. The evidence coming from a number of statistical studies has confirmed the existence of such premium. Nevertheless, such finding is contradictory in relation to the conclusions of opinion-based studies. This paper seeks to study whether energy efficiency drives market price and the marketing of homes in Spain. In doing so, a survey applied to realtors across the country has been implemented. The results are in line with other opinion-based studies pointing out that energy performance has a negligible impact on the marketing of homes. Furthermore, real estate agents suggest that companion policies in the sphere of subsidies and fiscal exceptions are needed in order to bring energy efficiency to the first line of elicitation attributes in the residential market.Item Interconnection between scales for friendly and affordable sustainable urban districts retrofitting(2015-11-01) Barbano, Giulia; Egusquiza, Aitziber; LABORATORIO DE TRANSFORMACIÓN URBANAThe EU FP7 project FASUDIR (Friendly and Affordable Sustainable Urban Districts Retrofitting) supports the mobilization of the building retrofitting market towards 2020-2050 EU-targets through an Integrated Decision Support Tool (IDST), a software based on a new methodology that will help decision makers identify the best energy retrofitting strategy to increase the sustainability of the whole district. Improving the sustainability of urban environments is a interscalar problem, addressed through a multiscalar and multidirectional approach. A comprehensive urban scale strategy considers the working scale, but the measures at building scale have to be coherent with the global objectives at district and city scale. The FASUDIR IDST and methodology interconnect and visualize information across scales, ensuring comprehensive diagnoses and proper implementation of strategies. Due to the complexity of urban sustainability, interscalarity and multiscalarity, first it has been necessary to identify the possible scales of analysis, to capture various themes and to highlight the horizontal and vertical interconnections between different components. Multiscalarity and Interscalarity affect the three phases of the sustainable retrofitting cycle: diagnosis, decision making and management. The identification of the impact of district solutions on buildings (and vice versa) and their compatibility across scales has been addressed through interconnected building and district Key Performance Iindicators (KPIs). The intervention phases at building level generate new information about specific buildings, enabling more accurate decision making at district level. The methodology articulates the structure of the new information and the feedback generated during the process. To allow information interconnection a strategic information management is key. A multiscale information model based on CityGML, a standard data model issued by the OGC (Open Geospatial Consortium), will be the baseline structure for all the district-scale information (geometric and semantic) that is necessary for decision making and management, organized into a single interoperable data model that will integrate information from different fields and at different levels of detail.Item Multi-scale urban data models for early-stage suitability assessment of energy conservation measures in historic urban areas(2018-04-01) Egusquiza, Aitziber; Prieto, Iñaki; Izkara, Jose Luis; Béjar, Rubén; LABORATORIO DE TRANSFORMACIÓN URBANA; Tecnalia Research & InnovationThe demand for improving the energy performance of buildings located in the historic districts of cities is as high as the current demand in other city districts. The need to reduce energy consumption and improve the comfort of inhabitants is compounded by the need to preserve an environment of heritage value. The selection of rehabilitation strategies at urban scale offers significant benefits, but makes the process long and costly. Therefore, methods or tools are necessary to establish a rapid assessment that facilitates strategic decision making and a deeper analysis of a reduced number of alternatives.This paper describes a method that supports decision making regarding the suitability of Energy Conservation Measures (ECMs) in historic districts at early stages. The method considers the improvement of the energy performance of buildings as a positive impact, balanced with the negative impacts that the implementation of ECMs could produce. A CityGML-based urban model allows the automation of a multi-scale assessment for different ECMs and provides possible global energy demand reductions. This method, combined with an economic evaluation, can be used by decision makers for large-scale energy retrofitting. The applicability of the method is demonstrated through implementation in the historic city of Santiago de Compostela.Item MULTISCALE INFORMATION MANAGEMENT FOR HISTORIC DISTRICTS´ ENERGY RETROFITTING. A framework. A methodology. A model.(Universidad Politecnica de Cataluña-UPC, 2015-12-11) Egusquiza, Aitziber; Roca, Josep; Izkara, Jose LuisEuropean Historic Urban Districts are highly appreciated by their inhabitants and visitors and they can be considered as one of the most valuable collective achievements of the European culture. The preservation of our urban heritage requires the protection of the social context as well as the preservation of the authenticity and integrity of its physical materiality. That means to improve the quality of life of their inhabitants as well as the sustainability of the historic districts. This dissertation analysed the Historic Urban Districts as complex energy and informational systems in order to address the challenge to improve their sustainability and liveability while protecting their cultural values. First, a methodological framework for energy retrofitting in all its phases has been defined based on a strategic information management and from a multiscale perspective. Secondly, a decision making methodology that allows the modelling of the historic city and the selection of the best strategies has been developed. In order to support the whole system a multiscale data model has been designed. Finally, the historic city of Santiago de Compostela has been selected for the implementation.Item Systemic Innovation Areas for Heritage-Led Rural Regeneration: A Multilevel Repository of Best Practices: A multilevel repository of best practices(2021-04-30) Egusquiza, Aitziber; Zubiaga, Mikel; Gandini, Alessandra; de Luca, Claudia; Tondelli, Simona; Tecnalia Research & Innovation; LABORATORIO DE TRANSFORMACIÓN URBANAThis paper presents the result of the analysis of the data gathered from 20 Role Models (RM) case studies regarding their successful heritage-led rural regeneration models. For the study and comparison of the narratives of these Role Models two tools were used: the Community Capitals Framework, which studied the transference of capitals in each process and the identification of six Systemic Innovation Areas that allow this capital transference. A multilevel repository of best practices has been developed allowing the identification of common features, mechanisms for mobilisation of capitals and required resources that will facilitate the replication in other rural areas. The results of this work support the acknowledgement of the contribution of culture, together with cultural and natural heritage, to economic growth, social inclusion and environmental sustainability in rural areas reinforcing the role of culture as the fourth pillar of sustainable development.Item Vulnerability assessment of cultural heritage sites towards flooding events(2018-06-18) Gandini, Alessandra; Egusquiza, Aitziber; Garmendia, Leire; San-José, José-Tomás; Tecnalia Research & Innovation; LABORATORIO DE TRANSFORMACIÓN URBANAHistoric sites are threatened by diverse weather patterns, mainly due to global climate change, such as sea-level rise and increasing frequency of storms and other extreme precipitation events. As climate change is becoming an increasing urban problem, heritage located in this context is considered as a sensitive and vulnerable element of the city. Adaptation should be oriented to a sustainable transformation of the historic city, leading to more resilient and safe environments. Risk-based approaches should incorporate an assessment of sensitiveness and capacity to adapt to these hazards. Vulnerability is often assessed on a large scale (e.g. regional, local) and buildings are not considered as part of the urban environment, while conservation is often developed on the operational scale of a monument or site. Management of cultural heritage requires therefore for an urban approach, which considers all the elements and buildings as part of the urban environment. Research presented in this paper describes a methodological approach (MIVES - Integrated Value Model for Sustainability Assessment) for vulnerability assessment of historic sites, supported by multilevel indicators (urban, building, element), in order to provide an informed decision-making. The solution proposed in based on an organised and structures decision tree, which provides a comparable and unique vulnerability index on the building level.