Céline Rozenblat

Céline Rozenblat
University of Lausanne | UNIL · Institute of Geography and Durability

PhD

About

125
Publications
27,183
Reads
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1,716
Citations
Citations since 2016
31 Research Items
1015 Citations
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2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Introduction
Céline Rozenblat, is professor of Urban Geography at the University of Lausanne, Director of the Institute of Geography and Sustainability (IGD), and vice-president of International Geographical Union (IGU). She is member of the International Science Council (ISC) commission on Urban Health and Well Being: A system approach for 4 years. She is member of the Society of Complex Systems, and of the Digital Campus of complex Systems.
Additional affiliations
August 2006 - present
University of Lausanne
Position
  • Professor (Full)
September 1992 - August 2006
Université de Montpellier
Position
  • Maître de conférences

Publications

Publications (125)
Preprint
Full-text available
Without the consideration of complexity science, many digital twins will not work well.
Article
Full-text available
This study contributes to the debate on the impact of international shocks on the integration of national systems of cities into global economic networks. We examine how the crisis in Ukraine and the following economic sanctions of 2014 imposed on Russia affected the positions of Russian cities in global economic networks. To do so, we used worldwi...
Article
The urban resilience concept was introduced in 2016 as a key concept in the Habitat III New Urban Agenda for the next 20 years. We wonder how this urban resilience concept was elaborated and who influenced it the most? The preparatory events structured several stakeholders’ networks. The relations between stakeholders allowed the flow of ideas in t...
Article
Full-text available
Sustainable urban systems (SUS) science is a new science integrating work across established and emerging disciplines, using diverse methods, and addressing issues at local, regional, national, and global scales. Advancing SUS requires the next generation of scholars and practitioners to excel at synthesis across disciplines and possess the skills...
Preprint
Full-text available
City planners and urban policy makers require simulation models to understand, predict, design and manage urban areas so that cities can become more sustainable, equitable and efficient. Recently, the idea that one might build 'digital twins' of cities has captured the imagination of many scientists, engineers and policy makers. To unleash the full...
Preprint
Full-text available
City planners and urban policy makers require simulation models to understand, predict, design and manage urban areas so that cities can become more sustainable, equitable and efficient. Recently, the idea that one might build 'digital twins' of cities has captured the imagination of many scientists, engineers and policy makers. To unleash the full...
Book
Full-text available
In this little book we explain in which health condition cities and people living in cities are in today, why health is a systemic concept and what we can gain from applying systems thinking to cities, what a systems approach to urban health means in general and specifically applied to urban health equity and we provide some examples of initiatives...
Article
Statement by the scientific committee* of the International Science Council’s Programme on Urban Health and Wellbeing, on critical elements of urban health action in response to the epidemic.
Article
Full-text available
The paper presents a new type of urban delimitation for Russian cities called Large Urban Region which facilitates showing the level of integration of cities into globalization through the presence of multinational firms, and enables urban comparative research on the global scale. An important objective of the new delimitation is to encompass the a...
Article
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European cities may be regarded as having formed a system of well-interconnected entities over many centuries. The peculiarities of their hierarchical functional organization and territorial patterns have been extensively analysed. This study details a few contributions from the science of complex systems meant to formalize this knowledge. This inc...
Preprint
Full-text available
Cities’ delineation remains a hot topic of debate in a time where comparisons between cities are becoming increasingly based on different issues that address various scales of interventions and thus different concepts of cities. Aiming to compare cities and their insertion into globalization, we suggest that the “urban field of influence” is the be...
Article
Full-text available
Urban science seeks to understand the fundamental processes that drive, shape and sustain cities and urbanization. It is a multi/transdisciplinary approach involving concepts, methods and research from the social, natural, engineering and computational sciences, along with the humanities. This report is intended to convey the current “state of the...
Chapter
Full-text available
Despite their great diversity, most systems of cities show remarkably similar patterns when comparing the size distribution and the economic specialization of their constitutive cities. The universality of these patterns sparked the interest of geographers, economists and physicists. However, until now, no economic model has relied on a micro-based...
Article
Full-text available
Cities play an important role in the regional, national and continental development of economies, as well as global trade and infrastructure. Most of this development revolves around the presence of multinational firms and the inter-connected systems formed by their linkages. Analyzing the networks formed by these multinational firms can uncover ma...
Preprint
Full-text available
This study explores how to delineate Russian cities in order to make them comparable on the world scale. In doing so we introduce the concept of large urban regions (LUR) applicable to the Russian urban context. This research is motivated by a principal research question: how to construct a statistical urban delineation, which would allow first, to...
Article
Full-text available
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Article
Full-text available
Networks in nature not only depend on each other but also have internal community structures, such as infrastructure networks with links within and across geographic regions. The communities play an important role when the networks undergo localized failures in specific regions, for instance when natural disasters or economic sanctions disrupt a lo...
Article
Full-text available
This study aims to understand the current state of research in urban resilience, its relations to urban sustainability and to integrate several distinct approaches into a multi-level perspective of cities comprising micro, meso and macro levels and their interactions. In fact, based on the meta-analysis of nearly 800 papers from Scopus from 1973 to...
Chapter
In “The Role of Local Interactions in Cities’ Global Networking of Multinational Firms: An SIR Model Applied to Partial-Multiplex Directed Networks,” the spreading of a financial crisis in a partial-multiplex, direct financial network is simulated. Two important factors shape the relationships between the cities: their geographical proximity and th...
Chapter
The chapter “Economic Specialization and the Nested Bipartite Network of City–Firm Relations” shows how the structure of the city–firm bipartite network has striking similarities with other types of bipartite networks found in ecology. There, nodes represent species, while links represent their interactions. In so-called antagonistic networks, such...
Preprint
Full-text available
This study aims to understand the current state of research in urban resilience and to open a discussion about multi-level perspectives for this concept. Starting with the history of the concept of resilience, we identify three main stages in resilience concept’s evolution: conceptualization, contextualization and operationalization. Confusion occu...
Article
Urban systems share with other complex systems constraints on their dynamics that are revealed by pervasive structural features, among which scaling laws. Scaling laws are relationships between cities’ attributes and their size (here measured by their population). When the relationship is non proportional with exponents larger than 1, scaling laws...
Chapter
Because the whole book’s issue assumes the uneven integrations of national/continental urban systems inside the global economy, this chapter evaluates the rates and qualitative modes of integration of the national urban systems by the economic networks that are dominated by multinational firms. The empirical study encompasses the largest 1250 citie...
Chapter
The chapter proposes an overview of global urbanization since 1950, relying on the structural and dynamic principles of the evolutionary theory of urban systems and on the observations of some of the major financial linkages connecting cities. We analyze first an overview of the state of urbanization at the world scale using statistics collected an...
Chapter
In the time when Europe needs to strengthen its territorial cohesion and its global competitiveness, this chapter questions the integration and unity of the European urban system inherited from the long-term history as well as from the shortest-term division and reunification occurring during the second half of the twentieth century. First, we reca...
Article
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This article identifies the most cohesive multi-polar regions of the network of world cities, which differ from the unipolar centre-periphery model largely created by the high weight of central city connections. We use a community detection algorithm that outlines the high densities of city networks (in relative weights). Various patterns of indust...
Chapter
Sir Peter Hall was appointed as Professor of Geography at the University of Reading in 1968 at the early age of 36, Peter developed a unique international dimension to his understanding of cities. He soon recognised the dynamism of Asian cities through association with the University of Hong Kong in the mid 1970s and of American cities as Visiting...
Chapter
Sir Peter Hall was one of the outstanding urban geographers of the latter half of the twentieth century. His name is synonymous with cities and urban planning. One can only marvel at the depth and breadth of his contributions to the understanding of cities that, for 50 years have enlightened our thoughts of cities past, present and future. We never...
Chapter
Introduction: Sir Peter Hall, Pioneer in Regional Planning, Transport and Urban Geography.- A Polymath in City Studies.- Location and Innovation.- Transport and Place-making: A Long View.- The Strategic Planning Protagonist: Unveiling the Global Mega-City Region.- Creative Destruction, Long Waves and the Age of the Smart City.- The Visionary of Wor...
Article
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How are economic activities linked to geographic locations? To answer this question, we use a data-driven approach that builds on the information about location, ownership and economic activities of the world's 3,000 largest firms and their almost one million subsidiaries. From this information we generate a bipartite network of cities linked to ec...
Chapter
Dans le contexte des réformes institutionnelles engagées par la loi MAPTAM, qui propose la création des Métropoles et renforce les Pôles Métropolitaines, cet ouvrage collectif porte un regard dynamique sur le long processus de métropolitain d'un vaste territoire. A travers son histoire et son identité, les différentes étapes de la planification et...
Chapter
Les villes sont bousculées par trois grandes révolutions en cours, qui vont les transformer durablement. La transition écologique contraint chacune à économiser les ressources, et à trouver les moyens d'assurer à toutes les populations une meilleure qualité de vie au quotidien. La mondialisation soumet toutes les villes à des restructurations écono...
Article
Multiplex approaches of Urban systems in multinational firms’ networks This paper revisits the conceptual and methodological bases of networks approaches used for twenty years to study spatial processes that link cities and multinational companies, and that are now widely deployed in the literature on « global cities ». The aim is to explain the ch...
Article
Recent years have seen tremendous growth of many online social networks such as Facebook, LinkedIn and MySpace. People connect to each other through these networks forming large social communities providing researchers rich datasets to understand, model and predict social interactions and behaviours. New contacts in these networks can be formed due...
Technical Report
Full-text available
La construction de la métropole Aix Marseille Provence (AMP) vise à améliorer la cohérence et la complémentarité de ses territoires. Promouvoir la métropole ne doit pas seulement considérer les communes indépendamment les unes des autres, mais les aborder comme un ensemble constituant bien davantage que la somme de ses parties grâce aux synergies e...
Article
Full-text available
More than twenty years after the collapse of the former eastern bloc, cities in central-eastern Europe are nowadays unevenly integrated to the new liberal economic system in which they are now likely to evolve. This integration was, on one hand, subject to former communist heritages and even to the previous period, and on the other hand subject to...
Conference Paper
Full-text available
Recent years have seen tremendous growth of many online social networks such as Facebook, LinkedIn and MySpace. People connect to each other through these networks forming large social communities providing researchers rich datasets to understand, model and predict social interactions and behaviors. New contacts in these networks can be formed eith...
Article
Full-text available
Recent years have seen tremendous growth of many online social networks such as Facebook, LinkedIn and MySpace. People connect to each other through these networks forming large social communities providing researchers rich datasets to understand, model and predict social interactions and behaviors. New contacts in these networks can be formed eith...
Technical Report
Full-text available
La région-capitale comme principal relais européen vers et depuis l'extérieur Paris est dans le trio de tête des villes globales dans les réseaux mondiaux des entreprises, après Londres et New York, davantage grâce au rayonnement de ses entreprises que par son attractivité aux entreprises étrangères. Sa spécificité tient à son rôle particulier de c...
Chapter
Specific properties emerge from the structure of large networks, such as that of worldwide air traffic, including a highly hierarchical node structure and multi-level small world sub-groups that strongly influence future dynamics. We have developed clustering methods to understand the form of these structures, to identify structural properties, and...
Book
This leading-edge study focuses on the latest techniques in analysing and representing the complex, multi-layered data now available to geographers studying urban zones and their populations. The volume tracks the successful results of the SPANGEO Project, which was set up in 2005 to standardize, and share, the syncretic, multinational mapping tech...
Chapter
Network analysis naturally relies on graph theory and, more particularly, on the use of node and edge metrics to identify the salient properties in graphs. When building visual maps of networks, these metrics are turned into useful visual cues or are used interactively to filter out parts of a graph while querying it, for instance. Over the years,...
Article
Full-text available
Urban geography in the era of globalization: the cities of the future. Emerging knowledge and urban regulations Urban geography is the main focus of the research agenda of the Institute of Geography at the University of Lausanne. The emphasis is on globalization-driven changes within urbanization regimes. This article presents the emerging understa...
Article
Consultable en ligne : http://www.datar.gouv.fr/sites/default/files/travaux_en_l_11_synthese_acme.pdf Etude publiée dans la collection de la DATAR "Travaux en ligne, n°11"
Book
La Datar a souhaité engager une analyse comparative des dynamiques urbaines et métropolitaines. Cette dynamique entraîne des recompositions spatiales parmi les plus marquantes de notre temps, notamment parce qu'elle contribue à la concentration de la production de richesses. Les métropoles sont de plus en plus des " moteurs " du développement dans...
Article
Cities and transport networks have been intertwined through history and are still related despite the impacts of telecommunications. While each transport network has its own purpose, actors, rules and regulations, the position of cities in such networks reveals their complementarities. This paper analyzes the hierarchy and the specific roles of cit...
Article
Full-text available
Recent studies have shown that a system composed of several randomly interdependent networks is extremely vulnerable to random failure. However, real interdependent networks are usually not randomly interdependent, rather pairs of dependent nodes are coupled according to some regularity which we coin inter-similarity. For example, we study a system...
Article
The ability of cities to operate in global networks is usually measured according to their central position within multinational firm linkages. These measures are often used at the interurban level and neglect the intraurban processes of multiplier effects. The present study demonstrates that this affects the measurement of city centrality in busin...
Article
Full-text available
We model the spreading of a crisis by constructing a global economic network and applying the Susceptible-Infected-Recovered (SIR) epidemic model with a variable probability of infection. The probability of infection depends on the strength of economic relations between the pair of countries, and the strength of the target country. It is expected t...
Article
Full-text available
While maritime transport ensures about 90% of world trade volumes, it has not yet attracted as much attention as other transport systems from a graph perspective. As a result, the relative situation and the evolution of seaports within maritime networks are not well understood. This paper wishes verifying to what extent the hub-and-spoke strategies...
Book
Numéro spécial : world city networks and global commodity chains ; Editeurs scientifiques : Ben Derudder, Frank Witlox and Céline Rozenblat
Article
Full-text available
Several publications of the European Spatial Planning Observation Network (ESPON) suggest that one should be aiming at a polycentric urban system, albeit one which does not unambiguously display properties of territorial development (Vandermotten 2003). Focusing on concentration processes and implications of urban policies, the article draws attent...
Article
Full-text available
The theory of small world network as initiated by Watts and Strogatz 1998 has drawn new insights on spatial analysis as well as to systems theory. Its concepts and methods are particularly relevant to geography where spatial interaction is mainstream, and where interactions can be described and studied using large volume of exchanges or similarity...
Article
Networks of Multinational Firms and the attractiveness of Central European cities The interaction between multinational firms and urban spaces creates a territorial dynamic involving, in addition to both the economic and the spatial dimensions, social and cultural aspects of society. Today, Eastern European spaces are integrating into globalization...
Article
The interaction between multinational firms and urban spaces creates a territorial dynamic involving, in addition to both the economic and the spatial dimensions, social and cultural aspects of society. Today, Eastern European spaces are integrating into globalization through corporate networks. This paper questions the main factors underlying the...
Article
Full-text available
The actually urban dynamics lead to some difficulties in the global apprehension of the city. According to commuters weighted graphs between localities, we propose a new approach to understand those dynamics. Working successively on three scales (urban areas perimeters, sub-centres and each locality), the topic of this research is to measure and vi...
Article
Multinational Firms : an urban process in an international and transnational context Multinational companies widely direct nowaday the economy of every city and every region. The approach based on “international exchanges ” proposed by the international economy is not anymore efficient to understand the spatial organization of these firms, the comp...
Conference Paper
Full-text available
The aim of this study is to characterize territorial and topological levels in the structure and evolution of the global air transportation network. Using data from the ITA database for both 2000 and 2004, we analyze the topology of these networks with a new approach based on weighted graphs from a small world perspective (Watts, 1999; Barabasi, 20...