Mehdi Iraqi is defending his PhD thesis "Theoretical approaches for a geometrical optimization of urban shapes. Towards a fractal city development." on November 29th 2017 in Besançon.

The defense will take place at the "Maison des Sciences de l'Homme et de l'Environnement Claude Nicolas Ledoux", salle 4 (1 rue Charles Nodier). This work was directed by Pierre Frankhauser.

Defense jury

Pierre Frankhauser, Professor at the University of Franche-Comté 

Gabriel Dupuy, Emeritus Professor at the University Paris I

Geoffrey Caruso, Professor at the University of Luxembourg

Dominique Mignot, Scientific Director of IFSTTAR

Dominique Peeters, Emeritus Professor at the University of Louvain-la-Neuve, Belgium

Igor Agbossou, Lecturer at the University of Franche-Comté 

 

Abstract

This thesis is based on the challenges of assessing the impacts of urban planning decisions in the light of the imperatives of sustainable development. Beyond the vagueness often emerges from this concept, it is here to conduct a reflection on a balance to be found between the three pillars identified about sustainable development: economic, social and environmental. The aim is to consider how to assess the impacts of development policies in each of these three pillars and what conclusions should be drawn from them? The aim here is to provide answers by assessing the performance of the territories studied in these three pillars of sustainable development. For this purpose, the work is based on simulation models (here the MobiSim model developed within Laboratoire ThéMA) and on the production of synthetic indicators allowing a readable analysis and evaluation of the space. The combination of these synthetic indicators makes it possible to visualize and analyze the sustainability of the territory studied and to deduce the measures to be implemented with a view to ensuring a sustainable development policy. It is a question of putting the methodology and the results obtained into perspective in a global vision, seeking to establish by the balance between the three pillars a harmony which allows to satisfy the objectives of a policy guided by the imperatives linked to the concept of inherited from the Bruntland report. A critical approach to this concept and an analysis of the sets of actors of a territory are here conduits in order to be able to implement the scientific research work within a decision-making process. The challenge is to allow the results of research based on power modeling tools to find a more concrete and operational problem.

Last Updated: Thursday, 23 November 2017 10:13

Vincent Hély is defending his PhD thesis "Synthetic assessment of territorial sustainability. Strengths and weaknesses of modeling in the decision-making process" on November 22th 2017 in Besançon.

The defense will take place at the "Salon Préclin" (18, rue Chifflet, UFR SLHS). This work was directed by Jean-Philippe Antoni.

Defense jury

Alain L'HOSTIS, Researcher at the French Institute of Science and Technology for Transport, Development and Networks (Ifsttar)

Jean-Pierre NICOLAS, Researcher at the LAET / ENTPE University of Lyon

Pierre FRANKHAUSER, Professor at the University of Bourgogne-Franche-Comté,

Damien VERRY Projet manager at the CEREMA

 

Abstract

This thesis is based on the challenges of assessing the impacts of urban planning decisions in the light of the imperatives of sustainable development. Beyond the vagueness often emerges from this concept, it is here to conduct a reflection on a balance to be found between the three pillars identified about sustainable development: economic, social and environmental. The aim is to consider how to assess the impacts of development policies in each of these three pillars and what conclusions should be drawn from them? The aim here is to provide answers by assessing the performance of the territories studied in these three pillars of sustainable development. For this purpose, the work is based on simulation models (here the MobiSim model developed within Laboratoire ThéMA) and on the production of synthetic indicators allowing a readable analysis and evaluation of the space. The combination of these synthetic indicators makes it possible to visualize and analyze the sustainability of the territory studied and to deduce the measures to be implemented with a view to ensuring a sustainable development policy. It is a question of putting the methodology and the results obtained into perspective in a global vision, seeking to establish by the balance between the three pillars a harmony which allows to satisfy the objectives of a policy guided by the imperatives linked to the concept of inherited from the Bruntland report. A critical approach to this concept and an analysis of the sets of actors of a territory are here conduits in order to be able to implement the scientific research work within a decision-making process. The challenge is to allow the results of research based on power modeling tools to find a more concrete and operational problem.

Last Updated: Friday, 10 November 2017 15:14

Fractalopolis, the multifractal urban planning model, now published in the journal “Computers, Environment and Urban Systems”

 

A fifteen pages article synthesizes the planning premises that inspired applying the concept to the Grand Besançon agglomeration, thus outlining the second step of applying fractal models for urban and regional purposes.

Fractalopolis allows conceiving development plans on an urban and regional scale, based on five basic principles: a hierarchized polycentric urban development; a development linked to transportation axes; a locally concentrated development of residential areas avoiding diffuse sprawl, the interpenetration of green areas and urban areas across scales; the preservation of an interconnected network of green and natural areas of different size. The article focusses on the formal frame, which allows integrating all at once these five planning principles. The article starts by introducing the theoretical multifractal planning concept and explains then, more deeply, the software simulation tool, which allows applying the model to real world situations. A detailed description of the different modules and the application to the Great Besançon urban area illustrate the stepwise construction of such a planning scenario. I.) Choosing the central places of different hierarchical order as well as their catchment areas. II.) Evaluation of the performance of these areas with respect to the accessibilities to different types of amenities III.) Analysis and calibration of the spatial configuration of residential development according to the purposes of existing master plans.

 

Frankhauser P., Tannier C., Vuidel G., Houot H. (2018), An integrated multifractal modelling to urban and regional planning, Computers, Environment and Urban Systems, 67, 132–146.

Fractalopolis's webside

 

fig fratcalopolis site thema

 

Last Updated: Friday, 10 November 2017 09:36