274 citations · 1.2k across the 18 of their papers we have counts for
20 papers
Inheritance Entropy: A Model-Independent Method to Probe the Hereditary Structure of Cell Lineage Trees
Alessandro Allegrezza, Riccardo Beschi, Domenico Caudo +14
Human bone marrow stromal cells (BMSC) include skeletal stem cells with ground-breaking therapeutic potential. However, BMSC colonies have very heterogeneous in vivo behaviour, due…
Spin-Waves without Spin-Waves: A Case for Soliton Propagation in Starling Flocks
Andrea Cavagna, Guido Cimino, Javier Cristín +10
Collective turns in starling flocks propagate linearly with negligible attenuation, indicating the existence of an underdamped sector in the dispersion relation. Beside granting li…
Lineage topology, replication kinetics and cell cycle synchronization reveal regulated growth dynamics in human bone marrow stromal cell colonies
Alessandro Allegrezza, Riccardo Beschi, Domenico Caudo +14
Bone marrow stromal cells (BMSC) -- which include skeletal stem cells -- are a promising tool in regenerative medicine. However, their heterogeneous and unpredictable in vivo behav…
Natural Swarms in Dimensions
Andrea Cavagna, Luca Di Carlo, Irene Giardina +5
The dynamical critical exponent of natural swarms of insects is calculated using the renormalization group to order . A novel fixed point emerges, where both activity a…
CoMo: A novel co-moving 3D camera system
Andrea Cavagna, Xiao Feng, Stefania Melillo +3
Motivated by the theoretical interest in reconstructing long 3D trajectories of individual birds in large flocks, we developed CoMo, a co-moving camera system of two synchronized h…
Stereo camera system calibration: the need of two sets of parameters
Riccardo Beschi, Xiao Feng, Stefania Melillo +2
The reconstruction of a scene via a stereo-camera system is a two-steps process, where at first images from different cameras are matched to identify the set of point-to-point corr…
Marginal speed confinement resolves the conflict between correlation and control in natural flocks of birds
Andrea Cavagna, Antonio Culla, Xiao Feng +7
Speed fluctuations of individual birds in natural flocks are moderate, due to the aerodynamic and biomechanical constraints of flight. Yet the spatial correlations of such fluctuat…
SpaRTA - Tracking across occlusions via global partitioning of 3D clouds of points
Andrea Cavagna, Stefania Melillo, Leonardo Parisi +1
Any 3D tracking algorithm has to deal with occlusions: multiple targets get so close to each other that the loss of their identities becomes likely. In the best case scenario, traj…
Dynamic scaling in natural swarms
A. Cavagna, D. Conti, C. Creato +6
Collective behaviour in biological systems pitches us against theoretical challenges way beyond the borders of ordinary statistical physics. The lack of concepts like scaling and r…
Non-symmetric interactions trigger collective swings in globally ordered systems
Andrea Cavagna, Irene Giardina, Asja Jelic +2
Many systems in nature, from ferromagnets to flocks of birds, exhibit ordering phenomena on the large scale. In physical systems order is statistically robust for large enough dime…
Spatio-temporal correlations in models of collective motion ruled by different dynamical laws
Andrea Cavagna, Daniele Conti, Irene Giardina +3
Information transfer is an essential factor in determining the robustness of collective behaviour in biological systems with distributed control. The most direct way to study the i…
Towards a tracking algorithm based on the clustering of spatio-temporal clouds of points
Andrea Cavagna, Chiara Creato, Lorenzo Del Castello +3
The interest in 3D dynamical tracking is growing in fields such as robotics, biology and fluid dynamics. Recently, a major source of progress in 3D tracking has been the study of c…
Local equilibrium in bird flocks
Thierry Mora, Aleksandra M. Walczak, Lorenzo Del Castello +6
The correlated motion of flocks is an instance of global order emerging from local interactions. An essential difference with analogous ferromagnetic systems is that flocks are act…
Error control in the set-up of stereo camera systems for 3d animal tracking
Andrea Cavagna, Chiara Creato, Lorenzo Del Castello +4
Three-dimensional tracking of animal systems is the key to the comprehension of collective behavior. Experimental data collected via a stereo camera system allow the reconstruction…
Finite-size scaling as a way to probe near-criticality in natural swarms
A. Attanasi, A. Cavagna, L. Del Castello +8
Collective behaviour in biological systems is often accompanied by strong correlations. The question has therefore arisen of whether correlation is amplified by the vicinity to som…
Emergence of collective changes in travel direction of starling flocks from individual birds fluctuations
Alessandro Attanasi, Andrea Cavagna, Lorenzo Del Castello +7
One of the most impressive features of moving animal groups is their ability to perform sudden coherent changes in travel direction. While this collective decision can be a respons…
Short-range interaction vs long-range correlation in bird flocks
Andrea Cavagna, Lorenzo Del Castello, Supravat Dey +4
Bird flocks are a paradigmatic example of collective motion. One of the prominent experimental traits discovered about flocks is the presence of long range velocity correlations be…
Flocking and turning: a new model for self-organized collective motion
Andrea Cavagna, Lorenzo Del Castello, Irene Giardina +8
Birds in a flock move in a correlated way, resulting in large polarization of velocities. A good understanding of this collective behavior exists for linear motion of the flock. Ye…
Collective behaviour without collective order in wild swarms of midges
A. Attanasi, A. Cavagna, L. Del Castello +8
Collective behaviour is a widespread phenomenon in biology, cutting through a huge span of scales, from cell colonies up to bird flocks and fish schools. The most prominent trait o…
GReTA - a novel Global and Recursive Tracking Algorithm in three dimensions
Alessandro Attanasi, Andrea Cavagna, Lorenzo Del Castello +8
Tracking multiple moving targets allows quantitative measure of the dynamic behavior in systems as diverse as animal groups in biology, turbulence in fluid dynamics and crowd and t…