Nahid is currently employed as a Visiting Fellow at University of Oxford, Sustainable Urban Development Programme. Nahid received Advanced Postdoc Mobility Fellowship Award from Swiss National Science Foundation to work on integrating urban form and sociotechnical potentials of decentralised energy supply. Nahid was previously a Postdoctoral Fellow at the School of Architecture, Civil and Environmental Engineering, Solar Energy and Building Physics Laboratory (LESO-PB - EPFL) where she led the Complex Urban Systems Group. At the EPFL, Nahid was involved in teaching of the two following courses: Technical Ecology of Human Communities and Urban Neighbourhoods, Infrastructures and Sustainable Development as well as co-supervising semester and master projects and PhD theses. Before joining EPFL, Nahid finished her PhD at University College London (UCL) in 2013. Nahid is a multi-disciplinary scholar whose research focuses on the urban renewable energy challenges and transitions toward a sustainable urban development. Nahid’s research lies on the interface of engineering and social sciences, and focus on integrating qualitative and quantitative as well as data-driven approaches of analyzing renewable energy resources in the urban areas.
Complex urban systems
Statistical modelling of urban patterns
Physics of urban form
Urban big data
Sustainable urban development
GIS and spatial data analysis
Peer-reviewed articles• Mohajeri, N., Gudmundsson, A., Upadhyay, G., Assouline, D., Kämpf, J., Scartezzini, J.L., 2016. Effects of urban compactness on solar energy potential. Renewable Energy 93, 469-482. Mohajeri, N., Gudmundsson, A.,Scartezzini, J.L., 2015. Statistical- physics modelling of the built environment in relation to urban ecology. Ecological Modelling,307, pp. 32-47. Mohajeri, N., Gudmundsson, A., French, J., 2015. CO2 emissions in relation to street-network configuration and city size. Transportation Research Part D: Transport and Environment 35, 116-129. Mohajeri, N., Poursistani P., Poursistani. P., Gudmundsson, A. 2015. Quantitative analysis of structural changes during rapid urban growth. Journal of Urban Planning and Development (American Society of Civil Engineering). DOI:10.1061/(ASCE)UP.1943-5444.0000213,pp.05014014-1,10. Mohajeri, N., Gudmundsson, A., 2014. Street networks in relation to landforms: implications for fast-growing cities. Journal of Geographical Sciences, 24 (2), pp. 363-381. Mohajeri, N., Gudmundsson, A., 2014. Analysing the variation in street patterns: implications for urban planning. Journal of Architectural and Planning Research 31, 112-127. Mohajeri, N., Gudmundsson, A., 2014. The evolution and complexities of urban street networks. Geographical Analysis 4, 1-23, doi: 10.1111/gean.12061. Mohajeri, N., Gudmundsson, A., 2014. Quantifying the differences in geometry and size distributions of buildings within cities. Nexus Network Journal: Architecture and Mathematics Online 16(2),417-436. Gudmundsson, A., Mohajeri, N., 2013.Entropy and order in urban street networks. Nature Scientific Reports, 3, 3324, DOI: 10.1038/srep03324. Mohajeri, N., French, J., Gudmundsson, A., 2013. Entropy measures and street-network dispersion: examples from coastal cities in Brazil and Britain. Entropy, 15(9), pp. 3340-3360. Mohajeri, N., French, J., Batty, M., 2013. Evolution and entropy in the organisation of urban street patterns. Annals of GIS, 19, pp.1-16. Gudmundsson, A., Mohajeri, N., 2013. Relations between the scaling exponents, entropies, and energies of fracture networks. Bulletin of the Geological Society of France, 184 (4), pp. 377-387. Mohajeri, N., 2012. Effects of landscape constraints on street patterns in cities: example from Khorramabad, Iran. Applied Geography 34, pp.10-20. Mohajeri, N., Gudmundsson, A., 2012. Entropies and scaling exponents of street and fracture networks. Entropy 14, pp. 800-833. Mohajeri, N., Longley P., Batty M., 2012. City shape and the fractality of street patterns. Quaestiones Geographicae 31, pp. 29-37. Habib, F., Etesam, I., Ghoddusifar, H., Mohajeri, N., 2012. Correspondence Analysis: A New Method for Analyzing Qualitative Data in Architecture. Nexus Network Journal: Architecture and Mathematics 14, pp. 517-538. Mohajeri, N., Amin Gh., 2010. Railway station site selection using analytical hierarchy process and data envelopment analysis. Journal of Computers and Industrial Engineering 59, pp.107-114. Safaee, M., Mohajeri, N., Aghili, A., 2007. The effect of underground development on the rehabilitation of historical urban places, Tehran- Iran. National Technical University of Athens, pp.309-315.
Submitted and under preparation articlesHow green are British cities? Scaling relations and CO2 emissions, 2015. Under prepration Density gradient, entropy, and energy flows in the Geneva city, 2015. Under prepration Energy distribution and city evolution:An emprical study of Geneva city, 2015. Under prepration The effects of street geometry and orientation on building energy use, 2015. Under prepration
PhD ThesesComplex Urban Systesms: Title: 'City shape, entropy, and street networks', August 2013, University College London, Geography Department/CASA. Supervised by Professors Jon French and Michael Batty. Viva examination outcome: Pass. Excellent, no thesis changes requested. Examiners: Prof. Sir Alan Wilson and Prof. Peter Allen. Urban Design: Title: Fractal City - the Language of Nature in Urban Design,February 2007, Azad University of Tehran-Iran, Science and Research Branch, Department of Art and Architecture.
Book reviewsMohajeri, N., 2011. Book review: Spacematrix: Space, Density and Urban Form. Journal of Environment and Planning B-Planning & Design 38(3), pp. 367-568.
Book chaptersMohajeri, N., 2008. Spatial organization and economic analysis in sustainable transit oriented development, Iran. Underground Spaces: Design, Engineering and Environmental Aspects. Book Series: WIT Transactions on the Built Environment, Vol.102, pp.169-178. DOI: 10.2495/US080181
Conference proceedings, talks and abstractsMohajeri, N., Gudmundsson, A., Kunckler, T., Upadhyay, G., Assouline, D., J.L. Scartezzini. How street canyon configuration control the accessability of solar energy potential. Abstract and paper. International Conference PLEA (Cities, Buildings, People :Towards Regenerative Enviornmnets ) 2016 July 11-13 USA. Mohajeri,N., Assouline,D., Guiboud,B., Scartezzini, J.L. 2016. Abstract and paper. Does roof shape matter? Solar energy integration on roofs. Abstract and paper. International Conference on Systems Thinking for the Built Environment, ETH Zurich June 13-17. Mohajeri, N., 2015. Invited talk. Urban desnity and solar energy. Swiss Federal Institute of Technology in Lausanne (EPFL), School of Architecture, Switzerland. Mohajeri, N.,Scartezzini, J.L., 2015.Invited talk. An overview on future energy efficient buildings & districts in Switzerland (SCCER - FEEEB&D). Swiss Federal Institute of Technology in Lausanne (EPFL), Energy Center. Mohajeri, N., Gudmundsson, A.,Scartezzini, J.L., 2015. Talk and paper. Expansion and densification: linking urban form to cology.International Conference on Future Buildings & Districts Sustainability from Nano to urban Scale (CISBAT), 9-11 September, EPFL Lausanne, Switzerland. Mohajeri, N., Gudmundsson, A., Upadhyay, G., Assouline, D., Scartezzini, J.L., 2015. Talk and paper. Neighbourhood morphology and solar irradiance in relation to urban climate. International Conference on Urban Climate jointly with 12th Symposium on the Urban Environment, 20-24 July, Toulouse, France. Assouline, D., Mohajeri, N., Scartezzini, J.L., 2015.Talk and paper. Semi-supervised learning methodology for estimating roof-top photovoltaic solar energy potential in Switzerland.International Conference on Future Buildings & Districts Sustainability from Nano to urban Scale (CISBAT), 9-11 September, EPFL Lausanne, Switzerland. Mohajeri, N., Gudmundsson, A., J. French., Scartezzini, J.L., 2015.Talk and abstract. How green are British cities? Scaling relations and CO2 emissions 4th annual symposium on Applied Urban Modelling: Green Cities. Cambridge University, UK, 24-26 June 2015 Mohajeri, N., 23 June 2015. Invited talk. Impacts of urban spatial structure on fuel consumption and CO2 emissions Imperial College London Mohajeri, N., 22 April 2015. Invited talk. Building sustainable cities EFPL - School of Architecture, Civil and Environmental Engineering Mohajeri, N., 29 January 2015. Invited talk. Energy and building forms Energy and Climate Change Division (ECCD), Southampton University Mohajeri, N., 23 January 2015. Invited talk. City development, urban configuration and energy efficiency Future Energy Efficient Building & District (SCCER), ETH Zurich, EPFL, Luzern and Geneva Universities at Reka Holiday Village Mohajeri, N., 22 September 2014. Invited talk. Sustainable Urban Design, ARCHI - Welsh School of Architecture, Cardiff University Mohajeri, N., 09 September 2014. Invited talk. Complex Built Environment Systems University College London, Faculty of the Built Environment, The Bartlett School Mohajeri, N., 06 May 2014. Invited talk. Quantitative Methods and Visualisations Techniques in Urban Studies (Spatial Data Analysis), London School of Economics and Political Science, LES Cities Mohajeri, N., Gudmundsson, Scartezzini, J.L., 2014. Abstract and talk. Analysing and modelling the growth and efficiency of urban Transportation infrastructures. Symposium on Applied Urban Modelling - Planning Urban Infrustructure - Univresity of Cambridge, 1-3 April, Cambridge, UK. Mohajeri, N., Gudmundsson, A., Kämpf, J.H, Scartezzini, J.L., 2014. Paper and talk. Visualizing street orientation and solar radiation in relation to complex topography. EuroGraphics Digital Library,Workshop on Urban Data Modelling and Visualisation - DOI: 10.2312/udmv.20141070, 6 April, Strasburg, France. Mohajeri, N., 6 December 2013. Talk. The Evolution and Complexities of Urban Structure. Swiss Federal Institute of Technology in Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Solar Energy and Building Physics Laboratory (LESO-PB), Switzerland. Mohajeri, N., Gudmundsson, A., 2013. Abstract and talk. Entropy and street-network efficiency. RGS-IBG Annual International Conference on Transport and Energy. 28-30 August 2013, UK. Mohajeri, N., Gudmundsson, A., 2013. Talk and paper. The evolution and complexities of Urban street networks. ICA Workshop on Street Networks and Transport. 23-24 August 2013, Dresden-Germany. Mohajeri, N., 15 July 2013. Invited talk. Transport networks and energy efficiency. University College London, the Bartlett Faculty of the Built Environment, Energy Institute, UK. Mohajeri, N., 10 June 2013. Invited talk. Street mobility and accessibility. University College London, Department of Civil, Environmental, and Geomatic Engineering, UK. Mohajeri, N., 30 May 2013. Invited talk. Spatial configuration of street networks and their efficiency. University of Glasgow, UK. Mohajeri, N., 18 January 2013. Invited talk. Urban form, entropy, and energy. University of Cambridge Department of Architecture, UK. Mohajeri, N., 17 July 2012. Invited talk. Cities, entropy, and information. SENSEable City Laboratory Massachusetts Institute Technology (MIT), USA. Mohajeri, N., Gudmundsson, A., 2012. Abstract. Textural differences in street patterns of Iranian cities. International Conference on Urban Change in Iran, University College London (UCL). London, UK Poursistani P., Mohajeri, N., Poursistani. P., 2012. Abstract and poster (poster competition winner). Urban texture and geometric differences between the old and new parts of cities. International Conference on Urban Change in Iran, University College London (UCL).London, UK. Mohajeri, N., 2012. Talk. City shape, street networks, and entropy Mini Conference, University College London. London, UK. Mohajeri, N., 2011. Proceedings paper and poster. How landscape constraints control the shapes and street patterns of cities. 13th International Conference on Computers in Urban Planning and Urban Management (CUPUM) Alberta, Canada. Mohajeri, N., 2011. Abstract and talk. How landscape constraints control the geometric evolution of cities. 18th International Seminar on Urban Form and the Post-Carbon (ISUF) Montreal, Canada. Mohajeri, N., 2011. Talk. How landscape factors control the shapes and street patterns of cities. Presentation in UCL Geography Department, University College London. London, UK Mohajeri, N., 2011. Talk. Effects of external constraints on the general shape and internal geometric patterns of cities. Presentation in UCL Centre for Advanced Special Analysis (CASA), University College London, London, UK Mohajeri, N., 2011. Talk. Effects of landscapes on city shapes and street patterns. Presentation in Construction Engineering Organization Kerman, Iran. Longley P., Batty M., Mohajeri, N., 2010. Talk. Fractal cities: modelling growth and dynamics with new digital data infrastructures.1st international conference on cities and their growth: sustainability and fractality Poznan, Poland Mohajeri, N., 2010. Talk. External constraints, city shape and street patterns of cities. Presentation in Centre for Advanced Special Analysis (CASA), University College London London, UK Mohajeri, N., 2010. Talk. Visualising changes in city street patterns. Presentation in UCL Bartlett school of Architecture, University College London London, UK Mohajeri, N., Longley P., 2010. Abstract and talk. Visualising street pattern variations within cities. RGS-IBG Annual International conference. London, UK. Mohajeri, N., 2008. Proceedings paper and talk. Spatial organization and economic analysis in sustainable transit oriented development, Iran. 1st International Conference on Underground Spaces: Design, Engineering and Environmental Aspects Wessex Institute of Technology, New Forest, UK. Safaee, M., Mohajeri, N., Aghili, A., 2007. Proceedings paper and talk. The effect of underground development on the rehabilitation of historical urban places, Tehran- Iran. 11th International Conference on Underground Spaces, Athena, Greece. Mohajeri, N., 2006. Abstract. Insulator products and new sustainable approach in the insulation industries, Printed in proceedings of the 5th conference on fuel conservation in building Iran-Tehran. Sattarzadeh, D., Mohajeri, N., 2004. Abstract and talk. Qanat or Kariz and its effect on the morphology of Islamic cities case study: Yazd city. International Seminar on Urban Form (ISUF), Newcastle, UK.
Enseignement & Phd
- Doctoral Program in Energy
Projects (PhD, MSc, BSc)PhD project (Co-supervisor): (i)Geo-Dependent Energy Supply in Relation to Urban Form, Funded by SCCER Master projects: (i)Eco-District and Energy Planning (ii)A Parametric Facade Design for Improving Daylight Performance (iii)Roof-shape complexity: An urban-scale classification of roof geometries for solar energy applications (iv)How street configurations control solar energy potential? Semester projects: (i)Urban configuration and renewable energy (ii)Urban metabolism of Fribourg: From energy flows to energy management Bachelor projects: (i)Renewable Energy and Urban Form (ii)Urban Energetics and Spatial Data (iii)Renewable Energy and Built Form Winter School EUROTECH, Feb 2015: Teaching two lectures in the Winter School EUROTECH Feb 2015: Integrated Urban Energy Systems Design. Course title: Energy- Efficient Urban Configurations: Theory and Application.
IntroductionIn order to model the dynamics of built environment and understand their sustainable development, as well as their interactions with infrastructure networks and urban ecosystem we need a comprehensive theoretical understanding of cities as complex systems. One principal aim of this research is to use the complex system theories and methods from physics and engineering in order to reduce the negative environmental impact of the cities through the following approaches: (1) developing energy-efficient urban forms, (2) modelling and identifying renewable energy resources from regional to city scale, (2) improving our understanding of urban metabolism, (3) improving the environmental impacts of urban infrastructure networks and mobility patterns through data-driven approaches and real-time data (4) assessing and minimising the ecological footprints of cities.
Energy-Efficient Urban FormsHow do different urban forms relate to energy consumption and renewable energy supply (e.g. solar energy)? The aim is to explore the effects of different urban configurations including compact/dispersed on the energy use and microclimate. A further aim is to assess the contribution of different urban forms to sustainability, and to provide a framework for eco-cities (e.g. green infrastructure, high density, mixed land-use, ecological and cultural diversity, and passive solar design). To quantify the complexities of urban forms in relation to energy use and their sustainable development, the following methods are used: (i) Urban entropy analysis, (ii) Statistical methods, (iii) Methods adapted from physics and engineering (such as statistical physics/information theory), (iv) GIS and spatial analysis.
Urban Big Data and Renewable Energy PotentialsWe live in a data-driven world and many scientific sub-disciplines have become largely data-driven, including aspects of social science, urban science, and energy management. The aim is to collect different types of energy data (satellite data, estimated and measurements data, etc.) and multi-scale urban data (neighborhood level, city and regions), as well as real time datasets - big data so as to discover patterns in large data sets and propose new ways to map, visualize, and analyze them (average trends, statistical characteristics, deviation from average, and changes over time). GIs and geo-statistical tools, machine learning (e.g. SVM)and data mining techniques can be used so as to analyse urban data and identify the current renewable resources as well as to make predictions or future decisions.
Size, Scaling Relations, and Urban MetabolismOne of the most salient characteristics of a city is its population size, which affects its productivity, energy use, innovation, and wealth creation. The aim is to study the importance of urban population size and scaling laws (super-linear and sub-linear relations) in cities. The topic covers the scaling relations between city size and infrastructure (transport networks and buildings), city size and resources (flows of energy, materials, waste, goods and information, etc.), but also city size and socio-economic parameters (income, innovation, disease) so as to find the regularities and systematic behavior of cities as analogies to biological and ecological systems. The aim is to develop an urban metabolism approach using statistical thermodynamics, network models and the maximum entropy method which have the potential to bring about fruitful results and new tools as to modelling energy flows in urban systems.
Cities, Infrastructure Networks and CO2 EmissionUrban infrastructure, especially transport networks, are major determinant of the overall structure, productivity, global economy, and energy efficiency of cities. Transport is also a major source of greenhouse gas emissions: CO2 emissions in the transport sector are about 30% of the total for developed countries and about 23% of total anthropogenic CO2 emissions worldwide (www.unece.org). The aim of this study is to understand the relation between mobility network structure, which connects people and places, and fuel consumption and carbon dioxide (CO2) emissions. Such a relation should provide a better understanding of how cities are organized and how they can use energy efficiently. Entropy analysis, for quantifying network structure, statistical modelling and GIS related tools use in this study.
Media and outreach activities1. EPFL news Mediacom. Et si du désordre urbain naissait la durabilité ? Ppublished in e-newsletter, interviewed by Sandy Evangelista, 24 August 2015
2. EPFL Flash Newspaper. Could urban disorder leads to sustainability? EPFL newspaper, FLASH, interviewed by Sandy Evangelista, No.7, 24 September 2015
3. Le Temps. Comment agrandir une ville sans faire trop de dégâts (City expansion without negative environmental impact)? Published in Le Temps, interviewed by Nic Ulmi, 2 September 2015.
Editorial tasksAssociate Editor of Sustainable Design and Construction: Frontiers in Built Environment
Chief Editor: Professor Nyuk Hien WONG, National University of Singapore,Singapore.
Associate Editor of Urban Science: Frontiers in Built Environment
Chief Editor: Professor Marina Alberti, University of Washington,USA.