Using the Analytic Hierarchical Process to Define Choices for Re-Using Rural Buildings: Application to an Abandoned Village in Sicily

It has been recognised for some time that traditional rural buildings are a cultural and/or practical “resource” of the countryside. Inappropriate re-conversions can result in the waste of valuable economic resources and the loss of local heritage. Thus, before reconstruction is started the possible types of re-use should be accurately evaluated. This work develops a method, based on the Analytic Hierarchy Process, for identifying the best re-use of an abandoned village that was built in the first half of the last century. The method uses the guidelines of the countryside plan, and our work is a case study designed to verify whether or not it is suitable in this context. Five requisites for sustainable intervention were identified, as well as three alternative re-uses and five indicators. The hierarchical analysis was developed using two different approaches, one used three hierarchical levels, and the other used four. The results obtained for both approaches agree in suggesting the same model for re-use, but the four level approaches also supplied additional information which would be useful when planning projects with major social and cultural impact.

Parametric Analysis of the Changes a Landscape Previously Used for Transhumance in a Nature Reserve in Sicily

Cavagrande del Cassibile is an important nature reserve in South East Sicily (Italy). It was established to conserve and restore the natural Mediterranean vegetation in the area, as well as to protect and increase the local fauna. Inside the reserve there are farms which only abandoned transhumance in the 1990s. Our research investigates whether the conversion of the farms from transhumance to fixed site stock-breeding has changed the particular landscape under investigation. The study was carried out on two scales: at territory level, in order to analyse the present potential advantages that the reserve offers to the area;and at farm level, in order to analyse the transformation of the landscape and to highlight the importance of the farms in the modern multifunctional rural context. The results at territory level show that the Cavagrande del Cassibile reserve has great potential for environmental agro-tourism. The results of the farm level analysis were obtained by elaborating certain indices (changes in the landscape, continuation of farming, farm size). These allowed the changes in the countryside to be described in quantitative terms. In general, it emerges that there have been structural changes since the days of transhumance and that this has resulted in a landscape where the effects of human activities are more visible. Lastly our research also shows the sensitivity that the stockbreeders and farmers feel for their environment and their willingness to develop activities which will encourage local tourism and excursions.

Evaluating the Landscape Capacity of Protected Rural Areas to Host Photovoltaic Parks in Sicily

This paper uses the LCA (Landscape Character Assessment) manuals produced by the Countryside Agency and Scottish Natural Heritage to develop a method for analysing the characteristics of the landscape and its ability to host photovoltaic parks. The method was tested on a site which is part of the Natura 2000 network in Sicily, where the different needs of high quality agricultural land, scenery of great natural value and human activities compete with one another. The evaluation of the landscape’s capacity to absorb the changes was effectuated by defining criteria which take into consideration the possible impact of photovoltaic sites on the landscape. These criteria were used to evaluate the sensitivity of the characteristics of the landscape as well as its quality and value, and the visual impact of the proposed changes. Most of the Landscape Units were found to be not suitable for photovoltaic parks because of the high value of the land. However, protected agricultural land, mainly used for greenhouses, has a medium to high capacity to host photovoltaic plants, and if these are correctly planned, this could help to lower the sensitivity levels.

Modeling coordinated multiple views of heterogeneous data cubes for urban visual analytics

With the explosion of digital data,the need for advanced visual analytics,including coordinated multiple views(CMV),is rapidly increasing.CMV enable users to discover patterns and examine relationships across multiple visualizations of one or multiple datasets.CMV have been implemented in a web-based environment through the Australian Urban Research Infrastructure Network(AURIN)project.AURIN offers a platform providing seamless and secure access to an extensive range of distributed urban datasets across Australia.Visual exploration of these datasets is essential to support research endeavors.This paper focuses on the challenges in dealing with complexity and multidimensionality of datasets used in CMV.We rely on the concept of multidimensional data cubes as the theoretical framework for coordination across visualizations.Using the concept of data cubes and hierarchical dimensions,we present strategies to automatically build render groups.This provides an implicit coordination based on cube structures and a framework to establish links between a dataset with its aggregates in a one-to-many fashion.The CMV approach is demonstrated using aggregate-level data,which is provided through federated data services.The paper discusses the issues around our CMV implementation and concludes by reflecting on the challenges in supporting spatio-temporal urban data exploration.