We studied generalization of a method for extending configurational studies to variables that are not exclusively geographical, in order to allow investigation of generic relationships in the built environment. We observed a number of limitations of the classical approach of configurational studies and we considered how a complex analytical method could be implemented in the study of non-topological variables, such as land use, noise pollution and financial or property rents. In order to do this, we established a system of relationships based on a labeled primary graph. Categorization of the labels of the links was performed on a generic variable, specifically, the predominant use of roads. The graph was then contracted using an optimization algorithm, which we describe. The algorithm allows the network to be reduced to a more streamlined system that can better analyze the relationships between the different categories. Application of the method showed that it is faster to identify weaknesses in urban networks, and then take measures to resolve them. The case study concerns the pedestrianization of the Colosseum area in Rome.

The ideal Renaissance city is designed as a star-shaped fortress, where the streets and squares are organized to speed the movement of people and soldiers. Symmetry and accessibility represent the key features for the organization of the urban space. The resulting city is hierarchized and does not always guarantee an optimal degree of connectivity. Starting from the space syntax definition, we suggest a method to compute urban graphs from the Euclidean representation, the corresponding line graph and the contraction of nodes with the same urban function. We analyze the urban graphs of five historic cities and compare the analysis with the corresponding results from space syntax. Analysis of the spectral gap and the relative asymmetry distribution show a similar structure for these cities. The irregular or reticular housing structure seems to ensure connectivity and accessibility more than the regular grids. However, connectivity is ensured by the most peripheral streets, which in the space syntax representation play a marginal role.

In this paper we examine the effects of urban farming in a worldwide system of dismissed areas affected by the phenomena of large-scale industrial dismissing and shrinking cities. We study the features of urban decay and subsequent spill overs of land and soil use in private and public conduct in agri-urbanism. The connection between the city and its farmland could represent an opportunity to improve the welfare of the whole area near the city, made possible by establishing a close relationship between the development of sustainable agriculture and the city. This renewed interest in agricultural production not only depends on urban and - or economic interest, but on a new conception of city that can improve the use of agricultural gardening to overcompensate for the empty spaces between industrial and rural areas, as well as those peri-urban spaces which are included between buildings and sub-urban voids.

We studied generalization of a method for extending configurational studies to variables that are not exclusively geographical, in order to allow investigation of generic relationships in the built environment. We observed a number of limitations of the classical approach of configurational studies and we considered how a complex analytical method could be implemented in the study of non-topological variables, such as land use, noise pollution and financial or property rents. In order to do this we established a system of relationships based on a labeled primary graph. Categorization of the labels of the links was performed on a generic variable, specifically, the predominant use of roads. The graph was then contracted using an optimization algorithm, which we describe. The algorithm allows the network to be reduced to a more streamlined system that can better analyze the relationships between the different categories. Application of the method showed that it is faster to identify weaknesses in urban networks, and then take measures to resolve them. The case study concerns the pedestrianization of the Colosseum area in Rome.

The church of St Ignatius of Loyola in Rome, together with the Church of the Gesù, represents the most significant artistic contribution of the Jesuits in the Eternal City. Incorporated in the broader context of the Roman College, and built between 1626 and 1650 following a project by Padre (Father) Orazio Grassi S.J., it is the only one of the great Roman churches without a dome. The projects for the helioscopic dome by Orazio Grassi, the Cortonesque dome by Armando Brasini and the perspective dome by Andrea Pozzo represent the difficult attempt to create a perfectly rational layout for Rome, an ideal scientific and theological city. These projects tell the story of three different ways of conceiving architectural space affecting the city: political manifesto, imaginative introspection and colossal scenography. This paper describes the history of an “impossible” dome, analysing the historical evolution of the project and its three potential authors, three magnificent and idealist designers.