International journals(13)

Remote sensing

N. Brodu, D. Lague. Terrestrial lidar data classification of complex natural scenes using a multi-scale dimensionality criteria : applications in geomorphology. Journal of Photogrammetry and Remote Sensing 68: 121-134, 2012. (IF 2.90). Recognition of natural objects (vegetation, rocks...) in 3D point clouds. See the dedicated page.

D. Lague, N. Brodu, Jérôme Leroux. Accurate 3D comparison of complex topography with terrestrial laser scanner: application to the Rangitikei canyon (N-Z). Journal of Photogrammetry and Remote Sensing 82: 10-26, 2013. (IF 2.90). Quantifies the evolution of natural scenes from 3D point clouds. See the dedicated page.

Physics

N. Brodu, J. Dijksman, R. Behringer. Spanning the Scales of Granular Materials Through Microscopic Force Imaging. Nature Communications 6: 6361, 2015 (IF 10.74). Mesuring 3D force vectors at each chaque contact while controlling macroscopic stresses on a granular sample. See the dedicated page.

N. Brodu, J. Dijksman, R. Behringer. Multiple-contact discrete-element model for simulating dense granular media. Physical Review E 91(3): 032201, 2015 (IF 2.32). Validated with our experiment measures.

J. D. M. Walker, A. Tordesillas, G. Froyland, N. Brodu, J. A. Dijksman, R. P. Behringer. Structures and structural transitions in near-frictionless limit: uniaxial cyclic compression of hydrogel spheres.. Soft Matter 11: 2157-2173, 2015 (IF 4.15). Analysis of the evolution of 3D forces in a uniaxially compressed sample. Based on our experiment measures.

N. Brodu, R. Delannay, A. Valance, P. Richard. Evidence for new regimes in channeled granular flows. Journal of Fluid Mechanics 769: 218-228, 2015 (IF 2.29). The new states include non-trivial internal structures with secondary flows, heterogeneous mass distribution, superposed rolls, rolls atop a basal sheared ordered layer and dense cores supported by a gaseous phase. All condensed in a nice phase diagram. See the dedicated page.

N. Brodu, P. Richard, R. Delannay. Shallow granular flows down flat frictional channels: steady flows and longitudinal vortices. Physical Review E 87 (2): 022202, 2013 (IF 2.32). Also in an inclined canal, but focused on dense flows, while the above paper focuses more on supported regimes. See the dedicated page.

D. Vescovi, D. Berzi, P. Richard, N. Brodu. Plane shear flows of frictionless spheres: Kinetic theory and 3D Soft-Sphere Discrete Element Method simulations. Physics of Fluids 26: 053305, 2014 (IF 2.04). Extension of the kinetic theory of granular gases to denser situations, validaded with discrete element simulations.

Signal processing

N. Brodu, F. Lotte, A. Lécuyer. Exploring Two Novel Features for EEG-based Brain-Computer Interfaces: Multifractal Cumulants and Predictive Complexity. Neurocomputing 79: 87-94, 2012. (IF 2.01). Extracting two new features from EEG data, so as to improve classification. Source code.

Algorithmic

N. Brodu. Reconstruction of Epsilon-Machines in Predictive Frameworks and Decisional States. Advances in Complex Systems 14(5), pp. 761-794, 2011. (IF 0.79). How to combine epsilon-machines with a cost/utility function. See the dedicated page.

N. Brodu. Query Sphere Indexing for Neighborhood Requests. Journal of Graphics Tools 13(3):35–51, 2008. (IF NA). An algorithm for finding all or the k-nearest neighbors of mobile objects. Source code.

Complex systems

N. Brodu. A synthesis and a practical approach to complex systems. Complexity 15(1):36–60, 2008. (IF 1.03). Also introduces a form of weak emergence related to the incompleteness of formal systems.

N. Brodu. Minimal and necessary conditions for the emergence of species-specific recognition patterns.. Lecture Notes in Computer Sciences 4926, pp. 73–86, 2007 (IF 0.51). Agents learn to recognize each other in order to reproduce, in an artificial evolution setup. Source code.

Conférences internationales à comité de lecture (5)

N. Brodu, F. Lotte, A. Lécuyer. Comparative Study of Band-Power Extraction Techniques for Motor Imagery Classification. IEEE Computational Intelligence, Cognitive Algorithms, Mind and Brain pp. 1-6, 2011. Source code.

N. Brodu. Multifractal Feature Vectors for Brain-Computer Interfaces. IEEE WCCI 2008, IJCNN pp. 2883–2890. Extracting features from EEG series. Source code.

N. Brodu. Quantifying the effect of learning on recurrent spiking neurons. IEEE IJCNN pp. 512-517, 2007. Reference implementation of the algorithm and source code for the tests. See the dedicated page for details on the incremental statistical complexity algorithm.

N. Brodu. Learning using Dynamical Regime Identification and Synchronization. IEEE WCCI pp. 662-668, 2006. Initial source code, with a more recent version.

N. Brodu. Environmental fitness for sustained population dynamics. IEEE Evolutionary Computations Vol 1, pp. 343-350, 2005.. Source code and details on the dedicated page.

National journals (1)

G. Deffuant, A. Banos, C. Bertelle, N. Brodu, D. Chevalarias, P. Jensen, A. Lesne, J.-P. Muller, E. Perrier, F. Varenne. Visions de la complexité : Le démon de Laplace dans tous ses états.. Nature Science Société Vol 23(1), pp. 42-53, 2015.. Debates on what different scientific cultures consider "complex".

Invited speaker, international conferences (4)

N. Brodu, H. Yahia. Multiscale analysis with stochastic texture differences. RAECE Recent Advances in Electronics and Computer Engineering, 2015.

N. Brodu. Structure and behaviors of granular flows: simulations at the grain level and scaling laws. Eusopean Geosciences Union general assembly, 2013.

N. Brodu. Frameworks for causation. Causality and Complex Systems 4th workshop, 2009.

N. Brodu. A brief overview of causal and decisional states and their applications.. Dagstuhl seminar series : Machine learning approaches to statistical dependences and causality 2009.

N. Brodu. JSynoptic. 3ème workshop de l'ESA sur les outils et techniques pour l’Astrodynamique 2006.

Other

Collective publication, national (1)

D. Chevalarias, P. Bourgine, E. Perrier, et al. French Roadmap for complex Systems. RNSC 2008-2009.

PhD thesis

N. Brodu. Practical Investigations of Complex Systems. Concordia University 2007. See the dedicated page.

Master report

N. Brodu. Reduced dimension models for weather forecasting. Aston University 2000. See the dedicated page.

Miscellaneous

N. Brodu. Real-time update of multi-fractal analysis on dynamic time series using incremental discrete wavelet transforms. Technical report 2005. Source code.

N. Brodu. Crogai project report: Using AI with steering behaviors to model crowds. Technical report 2004.

N. Brodu. An overview of multiplayer gaming. Technical report 2004. Internal report for Concordia University students.