1,721,162 research outputs found
Spatial Complex Network Analysis and Accessibility Indicators: the Case of Municipal Commuting in Sardinia, Italy
Full text linkIn this paper a contribution is presented with respect to accessibility indicators modelling for commuters moving through the municipalities of Sardinia, in Italy. In this case, spatial complex network analysis is integrated into the construction of accessibility measures: one of the most relevant outcomes of the first tool –the detection of shortest road paths and distances- is adopted as an input for the second in modelling accessibility indicators. Instead of Euclidean distances often adopted in the literature, shortest road distances are chosen, as commuting implies movements that are usually repeated daily and very likely subjected, even unconsciously, to space and time minimization strategies.
In particular, two commuter accessibility indicators are constructed according to approaches based on a travel cost and a spatial interaction model with impedance function calibrated in exponential and in power form. The accessibility indicators are confronted each other and with relevant socio-economic and infrastructure characteristics of Sardinia.
In addition, they are described, with respect to their spatial distribution and their different implications, when adopted in decision-making and planning. The travel cost based accessibility indicator has a municipal spatial distribution strongly influenced by the main road infrastructure of the Island. By contrast, spatial interaction model based accessibility indicators are more reliable, with respect to their capacity to confirm a leading socio-economic role of the municipalities comprehended in the metropolitan area of the capital town Cagliari
Contingent Valuation of renewable energy innovations: vegetal biomass in Italy
No full textWarming-up of the planet and scarcity of conventional energy
resources has led to aim of reducing the consumption of fossil fuels and the
development of innovative renewable technologies for energy production.
However, innovations and investments in renewable energy can encounter
resistance of local communities. This makes planning for the development of
Renewable Energy Source-based power plants often very difficult. Against this
background, we investigate the level of social consensus on and support of the
development of an energy plant based on the use of vegetal biomass in Central
Sardinia, Italy. The method adopted is Contingent Valuation. Estimates of
ex-ante household Willingness To Pay are implemented, as they are important
indicators of the social endorsement for the project development. Implications
concerning consensus/disagreement on innovative technologies for sustainable
energy production are discussed as perspectives of future research
Book review of: Geneletti D and Abdullah A (eds) "Spatial Decision Support for Urban and Environmental Planning. A collection of case studies"
No full textGeographic Spaces / Digital Places: Towards a Communicative Approach for Urban and Regional Planning
No full textThe aim of this paper is the discussion of GIS oriented systems for distributed planning in the
light of two research projects carried on by the authors and devoted to the development of a
communicative approach to urban and regional settlements management. These cases deal
with the management of the urban historic centers recovery and of the development of areas
affected by the environmental tourism
Analisi multicriteri e supporto al piano: una sperimentazione riferita ad un’area protetta della Sardegna
No full textSustainability
No full textSustainability is a flexible and variously defined concept that – irrespective of the exact wording – encompasses the awareness that natural resources are finite, that social and economic development cannot be detached from the environment and that equity across space and time is required if development is to be carried on in the long term
Spatial organization and accessibility: a study of US counties
No full textCommuting is a phenomenon that widely affects contemporary societies confronted with the opportunity to work in places that are sometimes located at a considerable distance from residential districts. The areas in which we live are organized to allow for the daily movement of workers and students, calling for efficient transportation systems in order to minimize costs. In regional science, accessibility is often used to evaluate, among other characteristics, the effectiveness and quality of transportation systems. This multifaceted concept encapsulates the ability of a certain category of people to reach a given location and clearly depends on the logistics of transportation infrastructures. In literature accessibility is assessed by means of several indicators, whose functional structure is generally related to two factors: job opportunities and the transport costs that people sustain to reach a location. Whatever accessibility measure is applied, the level of accessibility often depends on spatial location.
In this chapter we apply spatial autocorrelation analyses to investigate the spatial distribution of commuters’ accessibility across US counties. Commuting is a mushrooming phenomenon in the US: approximately 25 per cent of the total US labour force (about 32 million people) commute from a distance radius of 25 minutes, according to the dataset on commuting behaviour provided by the US Census Bureau (www.census.gov). This information refers to commuting trips in the counties of the 50 states and the District of Columbia (DC). We consider inbound and outbound movements to and from each of the 3141 counties on the US mainland
Re-developing abandoned areas through the re-use of mines: towards a critical analysis on the Geo-mining, historical and archaeological Park of Sardinia
No full textThe contributiion presents results of the preliminary study for Master plan of the Geo-mining Park in Sardini
Il GIS come strumento per la gestione e la valutazione delle politiche regionali
No full textQuesto paper trae spunto dai risultati dell'Unità di ricerca d Cagliari del progetto di ricerca CNR-Dicoter Quater. Il contributo illustra lo sviluppo di un SIT sulla pianificazione d'aera vasta in Sardegna, come strumenti di supporto alla gestione delle politiche territoriali regional
Dai monumenti al contesto, politiche plurali verso la tutela delle forme dell’ambiente e del paesaggio
No full text- …
