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Papers by Simone Caschili

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ABSTRACT The recent proliferation of inter-firm collaborative linkages within the container port ... more ABSTRACT The recent proliferation of inter-firm collaborative linkages within the container port industry is progressively shaping a complex architecture of voluntary ties among terminal operators, i.e. an inter-organizational network. Within the overall industry network, some stable groups of densely interconnected firms emerge suggesting the existence of “cliques” where firms repeatedly cooperate with each other and develop strong and durable ties. The growing pressure exerted by economic uncertainty and market volatility on clique stability stimulates a fruitful academic debate on clique survival and its determinants. The present contribution investigates social and instrumental antecedents of clique survival, focusing on equity joint ventures engaged by terminal operators in a 10-year time frame (2002–2011). For this purpose, this study introduces a longitudinal network analysis of inter-firm relationships. Research hypotheses are tested performing binomial logistic regression analysis. In line with network theory assumptions, the outcomes corroborate the explanatory role of a number of social (i.e., cultural similarity and organizational mismatch) and instrumental (i.e., the presence of core firms within the clique and clique equality) antecedents in the survival of cliques. The results, indeed, bring valuable implications for both academics and practitioners.

We study the patterns of the communities of workers and students in the italian insular regions, ... more We study the patterns of the communities of workers and students in the italian insular regions, by applying grouping methodologies based on the characterization of the commuter's movements as a complex weighted network. In order the get the community structure we apply an algorithm based on the maximization of the weighted modularity that allows us to detect productive, geographically located, basins at different scales and composed by towns and their territories showing a certain degree of similarity. We confront these resulting distributions of communities with relevant historical and provincial boundaries, investigate on their discrepancies and correspondences, and propose possible perspectives for local policy making and planning. The main result of this study is that the emerging community structure revealed by the network grouping algorithm matches with the actual administrative boundaries.

Networks and Spatial Economics, 2015

ABSTRACT According to the Annual Disaster Statistical Review of 2012, the average number of natur... more ABSTRACT According to the Annual Disaster Statistical Review of 2012, the average number of naturally-triggered disasters occurring within a period of 1 year is about 300 events, in which over 100,000 people are killed as a consequence of their impacts. The statistics of disasters shed light on important trends arising, of which the two most salient are that developing and emerging economies suffer the most from human losses, and that the costs of natural disasters are escalating over time. In 2012 the Hurricane Sandy, one of the most ever expensive natural disasters in the United States, created damages for approximately US$ 50.0 billion (Guha-Sapir et al. 2013). Both natural and man-made disasters may have various spatial effects (from local to global scales) which reverberate for hours and even years when the damages affect the backbone of a system. Thus investigating these phenomena represent a complex but compelling issue. In the aim to predict and minimise the substantial economic losses ...

Maritime Policy & Management, 2014

Accessibility and Spatial Interaction, 2014

Advances in Spatial Science, 2009

The emerging new science of networks is providing an elegant paradigm for the characterization of... more The emerging new science of networks is providing an elegant paradigm for the characterization of the broad area of complex systems. New research perspectives have been opened in the study of many real phenomena and processes, and recently fields like urban, regional, and environmental sciences have gained new insights from the tools provided by network science. The complex networks analysis (CNA) becomes a useful framework in these fields to disentangle problems of a complex and unpredictable nature. ...

Journal of Agricultural Engineering, 2013

Journal of Regional Science, 2011

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Planning Support Tools: Policy Analysis, Implementation and Evaluation. Proceedings of the 7th International Conference on Informatics and Urban and Regional Planning INPUT 2012, Jun 13, 2012

The dichotomy between rural and urban settings has been used by census systems across the world i... more The dichotomy between rural and urban settings has been used by census systems across the world in order to distinguish areas with high density population from areas with low density and where the primary occupation is connected to the agricultural sector. In this paper we study the level of accessibility, remoteness and rurality for municipalities in Sardinia, Italy. We apply a spatial analysis by means of indicators, such as accessibility for commuters (De Montis, Caschili and Chessa, 2011), the index of relative rurality, the ...

We study the patterns of the communities of workers and students of Sardinia, by applying groupin... more We study the patterns of the communities of workers and students of Sardinia, by applying grouping methodologies based on the characterization of the Sardinian commuting system as a complex weighted network. The algorithm is based on a heuristic method able to optimize a quality function called modularity, as proposed by Newman et al.[01]. Its adoption allows us to detect productive basins geographically located, as composed by towns and their territories showing a certain degree of similarity. We compare the spatial distributions ...

Http Dx Doi Org 10 1080 03088839 2014 960022, Nov 27, 2014

Networks and Spatial Economics, 2015

Maritime Policy & Management, 2014

Accessibility and Spatial Interaction, 2014

Advances in Spatial Science, 2009

Journal of Agricultural Engineering, 2013

Journal of Regional Science, 2011

Skip to Main Content. ...

UCL logo UCL Discovery. ...

Planning Support Tools: Policy Analysis, Implementation and Evaluation. Proceedings of the 7th International Conference on Informatics and Urban and Regional Planning INPUT 2012, Jun 13, 2012

Port attractiveness is often driven by the reputation of a port, that is, on the basis of subject... more Port attractiveness is often driven by the reputation of a port, that is, on the basis of subjective factors such as reliability, corruption and efficiency in the logistics chain, which are all drawn together. The merits of this tacit knowledge are well-recognized in the tight network of operators, investors and maritime brokers. We scrutinise the concept of port attractiveness by proposing the hypothesis that subjective and exogenous port determinants (i.e. user perception and hinterland wealth), together with endogenous port characteristics, allow for the estimation of port attractiveness. In this context, our objective is to determine an attractiveness index for ports by considering 41 container ports in 23 African countries for the period 2006-2010. We apply a bottom-up approach to investigate the structural relationships among the three sets of determinants (endogenous, exogenous and subjective) that influence attractiveness. Our methodological approach employs structural equation modelling. The study shows that port reputation is an influential variable in port attractiveness. We study the temporal correlation among port attractiveness, GDP, FDI, and foreign aid. We find that, to increase port attractiveness in the selected ports, governments should first address the implementation of soft infrastructures rather than hard ones.

Economic systems as trade flows are constituted by intertwined networks such as the global supply... more Economic systems as trade flows are constituted by intertwined networks such as the global supply chain, international bilateral agreements, trans-national credit and foreign direct investments, as well as non-economic components (i.e. infrastructures, cultural ties and spatial barriers). To study the interrelationship within these networks and their impacts on trade flows, we construct the Interdependent Multi-layer Model (IMM), rooted in the theoretical concept of spatial interaction. Our aim is to investigate horizontal and vertical interdependency among networks. We calibrate the interaction model for a set of 40 countries and then examine the influence of shocks such as natural disasters in the interdependent networks - physical, economic and sociological layers. The model allows us to provide a measure of bilateral trade vulnerability and an understanding of the propagation of cascading effects (both positive and negative) at national and global scales.

An increase of free trade as well as advances in technology and geopolitical changes has typified... more An increase of free trade as well as advances in technology and geopolitical changes has typified the contemporary trade market. Globalisation has brought an unprecedented ease in the exchange of information and goods. In this context, maritime freight transport has seen an exponential expansion in the last few decades assuming a predominant role among the modes of transport. While the global shipping trade market is still mostly based on regional exchanges of goods, we are now witnessing a significant growth of maritime freight in transpacific trade. In this context, after presenting a picture of the actual structure of the maritime shipping system, we focus on a network analysis of the companies’ cooperation in the container sector. We show that the Container Company Network belongs to the class of small world networks. We conclude with some ideas for future research direction in the application of Spatial Interaction models in order to study the exchange of goods at port scale.

We present ComplexNetGIS an integrated ArcGIS® tool that has been developed based on the need for... more We present ComplexNetGIS an integrated ArcGIS® tool that has been developed based on the need for a specific instrument to implement analyses on large spatial networks. ComplexNetGIS helps to integrate the analysis provided by the Complex Network Theory together with tools for geographical visualization and analysis. Due to the wide application of Complex Network Theory to different fields of research, ComplexNetGIS can be useful in different areas ranging from studies in applied physics to the analysis of facilities management and transportation planning.