Iris Thomas
Biographic Data
| ID | 108540 |
|---|---|
| NAME | Iris Thomas |
| GIVEN NAMES | Iris |
| FAMILY NAME | Thomas |
| SIGNATURE | THOMAS I |
| AFFILIATIONS | UCLouvain |
| ORCID | 0000-0003-3386-2427 |
| VERIFIED | Yes |
| TOTAL WORKS | 42 |
| TOTAL CITATIONS | 138 |
| AUTHOR COUNT | 41 |
| EDITOR COUNT | 1 |
| FIRST PUBLICATION YEAR | 1984 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 6 |
From complaints to insights
The urban form of Brussels from the street perspective
Association between urban environment and mental health in Brussels, Belgium
These findings have important implications because most of the Brussel's population resides in areas where particulate matters concentrations are above the World Health Organization guidelines. This suggests that policies aiming to reduce traffic related-air pollution could also reduce the burden of depressive disorders in Brussels
Monitoring trucks to reveal Belgian geographical structures and dynamics
Hegemony and Protectionism in Bologna’s Meat Trade
During the Renaissance, visual images were legitimate and authoritative sources of information that influenced behavior and directed public opinion. Against a background of political and religious unrest and growing pressure for economic reform, it is maintained that Annibale Carracci’s painting of The Butchers Shop (ca. 1580–1583) sought to legitimize the professionalism of Bologna’s butchery trades, reinforce the reputation of the guild system,…
La ville résiliente
Lieux majeurs de toutes les accumulations matérielles, sociales et économiques, les villes sont au cœur de la question des changements climatiques. Leur avenir dépendra de notre capacité à inventer des espaces urbains habitables, justes et résilients. Les auteurs font ici le pari d'une action collective capable de transformer les menaces en force constructrice, de maîtriser la vulnérabilité des espaces urbanisés tout en renforçant leur résilience…
Cartographies des champs d’interaction dans et autour de Bruxelles
A l’aide de données relationnelles conventionnelles (migrations résidentielles, navettes de travail) et moins conventionnelles (appels de téléphonie mobile), l’espace dans et autour de la Région de Bruxelles-Capitale est partitionné en groupes de lieux fortement inter-reliés à l’aide d’une méthode mathématique de détection de communautés. Les partitions obtenues conduisent à des structures spatiales fortes alors que ni la distance ni les caractér…
Cartography of interaction fields in and around Brussels
Using conventional relational data (residential migrations, commutes to and from the workplace) and less conventional relational data (mobile telephony calls), the space in and around the Brussels-Capital Region is partitioned into groups of closely inter-related places using a mathematical community detection method. The partitions obtained lead to strong spatial structures, while neither the distance nor the characteristics of the places are ta…
Cartografie van de interactiegebieden in en rond Brussel
Aan de hand van conventionele (woonmigraties en woon-werkverplaatsingen) en minder conventionele (mobiele telefoongesprekken) relationele gegevens wordt de ruimte in en rond het Brussels Hoofdstedelijk Gewest opgedeeld in groepen van plaatsen, die nauw met elkaar verbonden zijn, op basis van een wiskundige methode voor de detectie van gemeenschappen. De verkregen indelingen (partities) leiden tot sterke ruimtelijke structuren, hoewel de methode g…
Siting green stormwater infrastructure in a neighbourhood to maximise secondary benefits
When siting green stormwater infrastructure (GSI), cities do not respond only to technical and regulatory requirements; they also strive to maximise environmental, aesthetic and social benefits. To help cities optimise the siting of GSI in the context of climate change, we developed a participatory decision support tool. Applied to a neighbourhood, this tool identified only a few sites where GSI would yield all secondary benefits and reduce clima…
Régions et frontières de téléphonie mobile en Belgique et dans l’aire métropolitaine bruxelloise
Dans cet article, nous explorons l’existence de régions et de frontières en Belgique au moyen d’un jeu de données original de plus de 200 millions de communications mobiles et d’une méthode mathématique qui permet de découper de manière naturelle et automatique des réseaux en groupes cohérents. Une géographie des communications mobiles est ainsi proposée sur la base de la fréquence relative des communications ainsi que de leur durée moyenne. Dans…
Regions and borders of mobile telephony in Belgium and in the Brussels metropolitan zone
In this article, we examine the existence of regions and borders in Belgium by means of an original data set of more than 200 million mobile communications and a mathematical method which allows networks to be divided into coherent groups in a natural and automatic manner. A geography of mobile communications is thus proposed based on the relative frequency of communications as well as their average duration. In the case of the relative frequency…
Regio’s en grenzen van mobiele telefonie in België en in het Brussels stadsgewest
In dit artikel onderzoeken we het bestaan van regio’s en van grenzen in België op basis van een originele databank die gegevens bevat van meer dan 200 miljoen mobiele telefoongesprekken en van een wiskundige methode die toelaat op automatische en natuurlijke wijze netwerken in coherente groepen te verdelen. Op die manier kan een geografie van mobiel telefoonverkeer voorgesteld worden op basis van de relatieve frequenties van de telefoongesprekken…
Bike-share rebalancing strategies, patterns, and purpose
Statistique, économétrie et espace
« L’espace n’est pas économiquement neutre. Son introduction n’apporte pas des raffinements de détail : elle change tout » (Ponsard, 1988). De fait, si le rôle de l’espace et des territoires dans la structuration des échanges et des interactions économiques constitue l’objet d’étude des géographes et des auteurs de sciences régionales depuis toujours, ce rôle a été assez peu considéré en économie jusqu’à l’article séminal de Krugman (1991). L’une…
Marketplace metaphors
While the concept of authenticity is commonly linked to the market exchange process, it also assists in the pursuit of political, social and economic objectives. Authenticity provides a legitimating function that serves the needs of specific groups and individuals. Establishing authenticity remains culturally and contextually dependent and requires an understanding of prevailing power relationships and historical events. This is demonstrated by r…
Self-assessed health of elderly people in Brussels
What determines carpooling to workplaces in Belgium
Does country influence the health burden of informal care? An international comparison between Belgium and Great Britain
Using matched areas to explore international differences in population health
Spatial Analysis of Residential Land Prices in Belgium
Spatial analysis of residential land prices in Belgium: accessibility, linguistic border, and environmental amenities, Regional Studies. This paper explores the spatial variation of land prices in Belgium. The originality of the methodology is threefold: to work at the spatial extent of an entire country; to compute accessibility measures to all jobs and several representations of the environmental amenities; and, more importantly, to test the hy…
Spatial clustering of events on a network
La mobilité en débat
The spatial structure(s) of the Belgian housing stock
Mapping accessibility in Belgium
Mapping accessibility in Belgium
Deprivation and mortality
Residential Segregation and Unemployment
This paper investigates the causal effects of the spatial organisation of Brussels on unemployment propensities. Using census data at the individual level, the unemployment probability of young adults is estimated while taking into account personal, household and neighbourhood characteristics. The endogeneity of residential locations is solved by restricting the sample to young adults residing with their parents; the potential remaining bias is e…
Contextual factors and immigrants’ health status
Does country influence the health burden of informal care? An international comparison between Belgium and Great Britain
What determines carpooling to workplaces in Belgium
Spatial clustering of events on a network
Accidents on belgium's motorways
Marketplace metaphors
While the concept of authenticity is commonly linked to the market exchange process, it also assists in the pursuit of political, social and economic objectives. Authenticity provides a legitimating function that serves the needs of specific groups and individuals. Establishing authenticity remains culturally and contextually dependent and requires an understanding of prevailing power relationships and historical events. This is demonstrated by r…
Spatial Analysis of Residential Land Prices in Belgium
Spatial analysis of residential land prices in Belgium: accessibility, linguistic border, and environmental amenities, Regional Studies. This paper explores the spatial variation of land prices in Belgium. The originality of the methodology is threefold: to work at the spatial extent of an entire country; to compute accessibility measures to all jobs and several representations of the environmental amenities; and, more importantly, to test the hy…
The spatial structure(s) of the Belgian housing stock
Bike-share rebalancing strategies, patterns, and purpose
Self-assessed health of elderly people in Brussels
Siting green stormwater infrastructure in a neighbourhood to maximise secondary benefits
When siting green stormwater infrastructure (GSI), cities do not respond only to technical and regulatory requirements; they also strive to maximise environmental, aesthetic and social benefits. To help cities optimise the siting of GSI in the context of climate change, we developed a participatory decision support tool. Applied to a neighbourhood, this tool identified only a few sites where GSI would yield all secondary benefits and reduce clima…
Using matched areas to explore international differences in population health
Accessibility to freight transport networks in Belgium
This paper focuses on the role of transportation infrastructure in freight accessibility from a sustainable and multi‐modal perspective. Several accessibility measures are applied separately yet simultaneously to water, rail and road transportation systems. It appears that the transportation system is structuring the Belgian space geographically and topographically (inertia of space due to transportation infrastructure), but that economic activit…
Monitoring trucks to reveal Belgian geographical structures and dynamics
Fractal dimension versus density of built-up surfaces in the periphery of Brussels
Pour une localisation optimale des centres de transbordement intermodaux entre réseaux de transport
La localisation des centres de transbordement où s'opère le changement de mode ou de réseau de transport intervient de façon déterminante dans la compétitivité du transport multimodal. L'objet de cette contribution est de discuter cette problématique en l'envisageant sous l'angle particulier de la théorie de la localisation. Ainsi, la localisation de centres de transbordement entre réseaux est définie comme un problème de type discret qui cherche…
Weight Variations within a Set of Demand Points, and Location-Allocation Issues
The purpose in this paper is to explore the consequences of weight variations in a given set of demand points on the following p-median results: the average and maximum distance between demand and supply, the geographical pattern of supply points, and the amount allocated to every supply site. By using a real-world case study (intraurban location of public libraries), two different estimations of demand associated with the same set of demand and …
City-Size Distribution and the Size of Urban Systems
This paper is an analysis of the city-size distribution for thirty-five countries of the world in 1975; the purpose is to explain statistically the regularity of the rank-size distribution by the number of cities included in the urban systems. The rank-size parameters have been computed for each country and also for four large urban systems in which several population thresholds have been defined. These thresholds seem to have more influence than…
Towards the simplification of location models for public facilities
Towards the Simplification of Location Models for Public Facilities
This paper clarifies the need for greater attention that should be paid to the modelling of users' behaviour in public facilities location models. Discussing the need for more complex objective functions, it shows that greater discrimination is required between distance‐sensitive demand and distance‐inelastic demand in location models. Current modelling strategies based on fixed demand configurations may however produce efficient results for some…
City-Size Distribution and the Size of Urban Systems
This paper is an analysis of the city-size distribution for thirty-five countries of the world in 1975; the purpose is to explain statistically the regularity of the rank-size distribution by the number of cities included in the urban systems. The rank-size parameters have been computed for each country and also for four large urban systems in which several population thresholds have been defined. These thresholds seem to have more influence than…
Weight Variations within a Set of Demand Points, and Location-Allocation Issues
The purpose in this paper is to explore the consequences of weight variations in a given set of demand points on the following p-median results: the average and maximum distance between demand and supply, the geographical pattern of supply points, and the amount allocated to every supply site. By using a real-world case study (intraurban location of public libraries), two different estimations of demand associated with the same set of demand and …
Mortalité et morbidité dues aux accidents de la route. Essai de comparaison Belgique-Québec
Morin Denis, Thomas Isabelle, Vandersmissen M.-H. Mortalité et morbidité dues aux accidents de la route. Essai de comparaison Belgique-Québec. In: Population, 51e année, n°1, 1996. pp. 196-206
Accidents on belgium's motorways
On High-Speed Connections and the Location of Activities
We study the impact of a high-speed connection between two regional economies on the location of production activities, using the simple plant-location problem and toy networks. As expected, the relative value of fixed production costs to transportation costs is crucial in the determination of facility locations. Less expected is the fairly strong instability observed in the structure of the locational pattern of facilities when the relative valu…
Pour une localisation optimale des centres de transbordement intermodaux entre réseaux de transport
La localisation des centres de transbordement où s'opère le changement de mode ou de réseau de transport intervient de façon déterminante dans la compétitivité du transport multimodal. L'objet de cette contribution est de discuter cette problématique en l'envisageant sous l'angle particulier de la théorie de la localisation. Ainsi, la localisation de centres de transbordement entre réseaux est définie comme un problème de type discret qui cherche…
Deprivation and mortality
Discrimination spatiale des femmes et ségrégation sur le marché du travail
Women's Spatial Discrimination and Segregation on Labour Market : the Example of Brussels. This paper aims at giving a state of the literature about spatial discrimination of the women and illustrating by the example of Brussels. A review of the literature concludes to a wide heterogeneity of the methods as well as the empirical results. The exploratory data analysis on Brussels confirms the existence of a strong spatial segregation related to th…
Accessibility to freight transport networks in Belgium
This paper focuses on the role of transportation infrastructure in freight accessibility from a sustainable and multi‐modal perspective. Several accessibility measures are applied separately yet simultaneously to water, rail and road transportation systems. It appears that the transportation system is structuring the Belgian space geographically and topographically (inertia of space due to transportation infrastructure), but that economic activit…
Where Alonso Meets Sierpinski
The coexistence of residential and agricultural activities within 'periurban belts' characterises many modern metropolitan areas. Unfortunately, few theoretical works in standard urban economics take this type of mixed space into account. This paper is an attempt to fill this gap: we present a residential location model (standard in urban economics) that is based on a support provided by fractal geography. More precisely, on the one hand, a Sierp…
Aspects macrogéographiques des accidents de la route
Cet article a pour objectif de démontrer, par comparaison, que la structure spatiale des accidents de la route est indépendante du pays dans lequel le phénomène est mesuré et que seul le facteur d'échelle constitue une différence. Les entités spatiales choisies pour cette démonstration sont le Québec et la Belgique. La structure spatiale des accidents de la route est modélisée et comparée sur la base de trois variables à expliquer et de quatre va…
Bruxelles et Wallonie
Contextual factors and immigrants’ health status
Fractal dimension versus density of built-up surfaces in the periphery of Brussels
The spatial structure(s) of the Belgian housing stock
Mapping accessibility in Belgium
Residential Segregation and Unemployment
This paper investigates the causal effects of the spatial organisation of Brussels on unemployment propensities. Using census data at the individual level, the unemployment probability of young adults is estimated while taking into account personal, household and neighbourhood characteristics. The endogeneity of residential locations is solved by restricting the sample to young adults residing with their parents; the potential remaining bias is e…
Spatial clustering of events on a network
La mobilité en débat
Spatial Analysis of Residential Land Prices in Belgium
Spatial analysis of residential land prices in Belgium: accessibility, linguistic border, and environmental amenities, Regional Studies. This paper explores the spatial variation of land prices in Belgium. The originality of the methodology is threefold: to work at the spatial extent of an entire country; to compute accessibility measures to all jobs and several representations of the environmental amenities; and, more importantly, to test the hy…
Does country influence the health burden of informal care? An international comparison between Belgium and Great Britain
Using matched areas to explore international differences in population health
What determines carpooling to workplaces in Belgium
Geography (26 works) · Computer Science (15 works) · Political science (15 works) · Economics (13 works) · Humanities (13 works) · Sociology (13 works) · Business (11 works) · Urban Transport and Accessibility (11 works) · Engineering (10 works) · Mathematics (10 works)