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Diego Altafini
Dipartimento di Ingegneria dell’Energia, dei Sistemi, del Territorio e delle Costruzioni, DESTeC, Università di Pisa, 56126 Pisa, Italy

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Short Biography

A Ph.D. researcher at the Department of Energy, Systems, Territorial, and Construction Engineering of the Università di Pisa. He obtained his Bachelor’s degree in Economics (2014) and defended his Master's thesis on Urban and Regional Planning at the Universidade Federal do Rio Grande do Sul - Brazil (2018). Since 2018, Diego Altafini has conducted his doctoral research at the Università di Pisa, focused on the development of spatial-economic models for the evaluation of productive areas’ locational efficiency and the assessment of territorial disparities. Since 2019, he has carried out teaching activities at the Università di Pisa, teaching courses on Tecnica Urbanistica e Modellazione del Territorio (Fondo Giovani 2019, 2020).

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Journal article
Published: 22 August 2021 in Sustainability
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In recent years, there has been a growing awareness that not all decommissioned and obsolete real-estate assets can be recovered and reused. After the paradigm of urban growth, and following the paradigm of regeneration, a new paradigm seems to be looming on the horizon: the paradigm of shrinkage. Due to this change in perspective, discussions on the potential of demolition policies as an alternative to regeneration and reuse are gaining support in the debate about urban growth. In the United States, there are two on-going programs using demolition as their main tool for urban planning: the blight elimination programs and the flood buyout programs. The former foresees the demolition of abandoned and decayed real-estate assets, while the latter envisions the demolition and relocation of buildings within areas under flooding risks. Given their successful employment in the U.S., this paper evaluates the applicability of these programs to an Italian case, which is characterized by a different building heritage and different territorial conditions. Simulations of the programs’ application are made using two case studies: Lecce nei Marsi (Abruzzo) and Moncalieri (Piemonte). The results demonstrate the substantial feasibility of the blight elimination programs’ usage in Italy, while the flood buyout programs instead demonstrates major obstacles that may hinder its successful application.

ACS Style

Simone Rusci; Diego Altafini; Valerio Di Pinto. Urban Demolition: Application of Blight Elimination Programs and Flood Buyout Programs to the Italian Case. Sustainability 2021, 13, 9412 .

AMA Style

Simone Rusci, Diego Altafini, Valerio Di Pinto. Urban Demolition: Application of Blight Elimination Programs and Flood Buyout Programs to the Italian Case. Sustainability. 2021; 13 (16):9412.

Chicago/Turabian Style

Simone Rusci; Diego Altafini; Valerio Di Pinto. 2021. "Urban Demolition: Application of Blight Elimination Programs and Flood Buyout Programs to the Italian Case." Sustainability 13, no. 16: 9412.

Conference paper
Published: 11 May 2021 in Lecture Notes in Civil Engineering
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Computational Planning Support Systems (CPSS), associated with GIS-based instruments diffusion during the late 2000s, have allowed policymakers to better deal with urban areas’ rapid transformations. Still, CPSS often remains oriented to evaluate territories’ physical changes, focusing on socio-environmental perspectives of sustainable development, while considering the economic aspects of this issue as independent and abstract variables. In this regard, economic sustainability is often treated as more dependent on social relations than territorial characteristics, even if spatial analyses have potential to unveil attributes related to urban areas’ overall resilience. Real-estate values are one of such economic variables. Considered as derived from market relations, property values are also influenced by territorial constraints: nearness to central places and road-infrastructure. Such aspects, however, become less evident when regional areas considered. Exploring urban-regional dynamics in a GIS-based environment, this paper assesses productive areas’ real-estate values patterns throughout Tuscany, comparing them with the distribution of centralities hierarchies of the road-circulation network. It is observed that there are regional differences in the road-circulation network centralities distribution that lead to territorial disparities within the region, where preferential routes do not reach certain productive areas in the hinterland, resulting in sparse productive areas with low property values. In this sense, differences in placement and real-estate values may indicate areas that are territorially more exposed due to unfavorable road-network configuration, and those that tend to be more resilient, important prospects to consider in CPSS with respect to long-term economic sustainability.

ACS Style

Diego Altafini; Elisabetta Pozzobon; Simone Rusci; Valerio Cutini. Computational Planning Support Systems for Regional Analysis: Real-Estate Values Dynamics and Road-Networks Configuration. Lecture Notes in Civil Engineering 2021, 291 -299.

AMA Style

Diego Altafini, Elisabetta Pozzobon, Simone Rusci, Valerio Cutini. Computational Planning Support Systems for Regional Analysis: Real-Estate Values Dynamics and Road-Networks Configuration. Lecture Notes in Civil Engineering. 2021; ():291-299.

Chicago/Turabian Style

Diego Altafini; Elisabetta Pozzobon; Simone Rusci; Valerio Cutini. 2021. "Computational Planning Support Systems for Regional Analysis: Real-Estate Values Dynamics and Road-Networks Configuration." Lecture Notes in Civil Engineering , no. : 291-299.

Research articles
Published: 26 January 2021 in International Planning Studies
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Production models’ flexibilization in capitalist economies continues to transform industrial activities’ spatial organization in a regional continuum. Placed in planned complexes located on cities’ fringes, firms often stand inaccessible from regional circulation routes, which hinder activities’ long-term economic sustainability. Further changes are impending, as forthcoming Smart Manufacturing logistics require efficient linkages between local and regional transportation models. Such issues compel urban planners, economists and policymakers to re-evaluate industrial territories’ imprint on metropolitan dynamics and enact proper strategies towards the industry. In this paper, the role of road-circulation network centralities on industrial complexes’ placement in a regional continuum is analysed, refining the existent methods to assess industry spatial configuration and agglomeration logics. Empirical cases comprise five Brazilian industrial complexes in Porto Alegre’s Metropolitan Region. Hypothesis is that road-circulation network centralities’ hierarchies (closeness and betweenness) have positive correlations to industrial placement patterns at regional and inner-complex scale, informing regional contiguity dynamics amid discontinuous industrial spaces.

ACS Style

D. Altafini; A. Braga; V. Cutini. Planning sustainable urban-industrial configurations: relations among industrial complexes and the centralities of a regional continuum. International Planning Studies 2021, 1 -21.

AMA Style

D. Altafini, A. Braga, V. Cutini. Planning sustainable urban-industrial configurations: relations among industrial complexes and the centralities of a regional continuum. International Planning Studies. 2021; ():1-21.

Chicago/Turabian Style

D. Altafini; A. Braga; V. Cutini. 2021. "Planning sustainable urban-industrial configurations: relations among industrial complexes and the centralities of a regional continuum." International Planning Studies , no. : 1-21.

Conference paper
Published: 29 September 2020 in Transactions on Petri Nets and Other Models of Concurrency XV
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Digital thematic maps availability has increased with the diffusion of open-source Geographic Information Systems (GIS) suites, which also had important role in urban and regional sciences revamp throughout the late 1990’s. These methodological innovations led to the conception of network-based data maps oriented to highlight urban scale road-circulation networks configurational properties, that supported comparative studies regarding cities’ morphologies and their representation as complex systems. However, significant hindrances persist for the construction of very large road-circulation network datasets, such as those suitable to regional and supra-regional scale analyses. Owing to their sheer sizes, modelling these expanses require extensive processing times, which impact on research prospects. Data precision is a concern as well, since generalization processes, whereas can reduce computing complexity, oftentimes render comparisons amongst different scales inaccurate, due to certain road structures non-representation. Research requirements for a comparable and accurate multiscale database, suited to evaluate circulation networks configurational properties of centrality, prompted construction of the Tuscany Configurational Atlas as an experiment. Intended as a set of GIS-based digital thematic maps and data repository, it depicts closeness and betweenness centralities hierarchies of the Tuscan Region road-infrastructure in regional, provincial and municipality scales. This paper summarizes the scope and methodological steps to construct this Configurational Atlas, while reducing regional-wide dataset-related issues. Furthermore, it discusses its contribution as a spatial representation, and evaluates its prospects as an analytical instrument and database. Concluding remarks define forthcoming improvements to be done regarding usability, such as its implementation in a WebGIS suite.

ACS Style

Diego Altafini; Valerio Cutini. Tuscany Configurational Atlas: A GIS-Based Multiscale Assessment of Road-Circulation Networks Centralities Hierarchies. Transactions on Petri Nets and Other Models of Concurrency XV 2020, 12251, 291 -306.

AMA Style

Diego Altafini, Valerio Cutini. Tuscany Configurational Atlas: A GIS-Based Multiscale Assessment of Road-Circulation Networks Centralities Hierarchies. Transactions on Petri Nets and Other Models of Concurrency XV. 2020; 12251 ():291-306.

Chicago/Turabian Style

Diego Altafini; Valerio Cutini. 2020. "Tuscany Configurational Atlas: A GIS-Based Multiscale Assessment of Road-Circulation Networks Centralities Hierarchies." Transactions on Petri Nets and Other Models of Concurrency XV 12251, no. : 291-306.

Journal article
Published: 24 September 2020 in Sustainability
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Regional configuration can reveal important aspects about city sustainability, as local-regional interactions shape the evolution and inner geography of urban settlements. However, modelling these large-scale structures remains a challenge, due to their sheer size as physical objects. Despite recent improvements in processing power and computing methods, extensive time periods are still required for ordinary microprocessors to model network centralities in road-graphs with high element counts, connectivity and topological depth. Generalization is often the chosen option to mitigate time-constraints of regional network complexity. Nevertheless, this can impact visual representation and model precision, especially when multiscale comparisons are desired. Tests using Normalized Angular Choice (NACH), a Space Syntax mathematical derivative of Betweenness Centrality, found recursive visual similitudes in centrality spatial distribution when modelling distinct scaled map sections of the same large regional network structure. Therefore, a sort of homothetic behavior is identified, since statistical analyses demonstrate that centrality values and distributions remain rather consistent throughout scales, even when considering edge effects. This paper summarizes these results and considers homotheties as an alternative to extensive network generalization. Hence, data maps can be constructed sooner and more accurately as “pieces of a puzzle”, since each individual lesser scale graph possesses a faster processing time.

ACS Style

Diego Altafini; Valerio Cutini. Homothetic Behavior of Betweenness Centralities: A Multiscale Alternative Approach to Relate Cities and Large Regional Structures. Sustainability 2020, 12, 7925 .

AMA Style

Diego Altafini, Valerio Cutini. Homothetic Behavior of Betweenness Centralities: A Multiscale Alternative Approach to Relate Cities and Large Regional Structures. Sustainability. 2020; 12 (19):7925.

Chicago/Turabian Style

Diego Altafini; Valerio Cutini. 2020. "Homothetic Behavior of Betweenness Centralities: A Multiscale Alternative Approach to Relate Cities and Large Regional Structures." Sustainability 12, no. 19: 7925.