A5037875330- French Urban and Social Studies
- Regional Economics and Spatial Analysis
- Global Urban Networks and Dynamics
- Urbanization and City Planning
- Cross-Border Cooperation and Integration
- Regional Development and Policy
- Complex Network Analysis Techniques
- Cultural Industries and Urban Development
- Human Mobility and Location-Based Analysis
- Opinion Dynamics and Social Influence
- Urban Design and Spatial Analysis
- Land Use and Ecosystem Services
- Business Strategy and Innovation
- Regional resilience and development
- Spatial and Panel Data Analysis
- Maritime Ports and Logistics
- Economic Zones and Regional Development
- Global trade and economics
- Urban Planning and Governance
- Migration, Ethnicity, and Economy
- Agriculture and Rural Development Research
- Smart Cities and Technologies
- Economic and Technological Innovation
- Regional Development and Innovation
- Regional Socio-Economic Development Trends
University of Lausanne
2015-2024
Institute of Business Administration Karachi
2024
York University
2024
V. B. Sochava Institute of Geography
2022
Archéologie des Sociétés Méditerranéennes
2005-2010
Université Paul-Valéry Montpellier
2004-2010
Étude des Structures, des Processus d’Adaptation et des Changements de l’Espace
1991-2006
Archéologie et Histoire Ancienne : Méditerranée – Europe
2005
Centre National de la Recherche Scientifique
1993
Université de Montpellier
1993
Recent studies have shown that a system composed from several randomly interdependent networks is extremely vulnerable to random failure. However, real are usually not interdependent, rather pair of dependent nodes coupled according some regularity which we coin inter-similarity. For example, study an world wide port network and airport show well connected ports tend couple with airports. We introduce two quantities for measuring the level inter-similarity between (i) Inter degree-degree...
Real data show that interdependent networks usually involve intersimilarity. Intersimilarity means a pair of nodes have neighbors in both are also [Parshani et al. Europhys. Lett. 92, 68002 (2010)]. For example, the coupled worldwide port network and global airport intersimilar since many pairs linked (neighboring cities), by direct flights shipping lines, exist networks. Nodes same city regarded as interdependent. If two neighboring one depend on other network, we call these links common...
We model the spreading of a crisis by constructing global economic network and applying Susceptible-Infected-Recovered (SIR) epidemic with variable probability infection. The infection depends on strength relations between pair countries, target country. It is expected that which originates in large country, such as USA, has potential to spread globally, like recent crisis. Surprisingly we show also countries much lower GDP, Belgium, are able initiate Using {\it k}-shell decomposition method...
Urban science seeks to understand the fundamental processes that drive, shape and sustain cities urbanization. It is a multi/transdisciplinary approach involving concepts, methods research from social, natural, engineering computational sciences, along with humanities. This report intended convey current "state of art" in urban while also clearly indicating how builds upon complements (but does not replace) prior work on urbanization many other disciplines. The aim at fully comprehensive...
The ability of cities to operate in global networks is usually measured according their central position within multinational firm linkages. These measures are often used at the interurban level and neglect intraurban processes multiplier effects. present study demonstrates that this affects measurement city centrality business networks. Intraurban capabilities interaction considered indices. based on hypothetical a micro between long-range links it mobilises as agglomeration economies,...
Cities and transport networks have been intertwined through history are still related despite the impacts of telecommunications. While each network has its own purpose, actors, rules regulations, position cities in such reveals their complementarities. This paper analyzes hierarchy specific roles two worldwide networks: air passengers maritime freights. These were chosen noticeable differences terms spatial economic organization, albeit they both essential respective urban development. Three...
Abstract This article identifies the most cohesive multi‐polar regions of network world cities, which differ from unipolar centre–periphery model largely created by high weight central city connections. We use a community detection algorithm that outlines densities networks (in relative weights). Various patterns industries and services, are divided into two skill levels, identified. global database 1.2 million direct indirect ownership links between 800,000 subsidiaries top 3000...
This study aims to understand the current state of research in urban resilience, its relations sustainability and integrate several distinct approaches into a multi-level perspective cities comprising micro, meso macro levels their interactions. In fact, based on meta-analysis nearly 800 papers from Scopus 1973 2018, we show that resilience discourses address micro levels, considering shocks bottom-up origin such as natural disasters. contrast, regional approach addresses (regional global...
The progress of political and economic integration among European countries is inducing the progressive emergence a urban system. National systems are restructuring adapting themselves to this new international context. location largest multinational firms taken as revealing major step in process cities into supra-national networks. A survey 3000 establishments belonging 300 provides interesting results about factors making attractive for such activities. It may be inferred from these that...
Urban systems share with other complex constraints on their dynamics that are revealed by pervasive structural features, among which scaling laws. Scaling laws relationships between cities’ attributes and size (here measured population). When the relationship is non proportional exponents larger than 1, indicate relative concentration of some urban functions at higher levels hierarchies. Superlinear thus reveals metropolisation trends produced in system, according to our evolutionary theory...
The aim of the study is to elaborate a model in framework self-organisation theory which would describe how interactions between individual towns and cities can produce macro-geographical structures dynamics at scale continental urban system. Simulations have been made using statistical growth system (the Gibrat's model). Results, however, show systematic discrepancies with observations. Coming back empirical features on very long term for large set (Europe, 1600-2000) brings new hypothesis...
Cities’ delineation remains a hot topic of debate in time where comparisons between cities are becoming increasingly based on different issues that address various scales interventions and thus concepts cities. Aiming to compare their insertion into globalization, we suggest the “urban field influence” is best way approach for this specific perspective. However, after reviewing existing possible concepts, extend concept with four complementary approaches: political entities, morphological...
Abstract The economic development of cities is heavily influenced by multinational corporations (MNCs), whose presence and interconnections with their subsidiaries across various regions continents significantly shape global operations potential expansions. North America serves as a pivotal hub for numerous leading MNCs globally, within this region play vital role in establishing both local relationships. This research aims to investigate these tightly coupled interdependent networks...
European cities can be conceived as forming a system of well interconnected since many centuries.The peculiarities their hierarchical functional organization and territorial patterns have been the subject numerous analyzes.The purpose this paper is to detail few contributions from science complex systems formalize knowledge.This includes representing metropolization process occurring within with help scaling laws network analysis.We define here process, not at local level one metropolitan...
This study aims to understand the current state of research in urban resilience and open a discussion about multi-level perspectives for this concept. Starting with history concept resilience, we identify three main stages concept’s evolution: conceptualization, contextualization operationalization. Confusion occurs between sustainability therefore clearly separate these two concepts by creating conceptual maps. Such maps also underline specificities regional discourses. We...