Institut de Recerca en Sistemes Complexos (UBICS): Enviaments recents
Ara mostrant els elements 1-20 de 119
Discounting the Distant Future: What Do Historical Bond Prices Imply about the Long-Term Discount Rate?
We present a thorough empirical study on real interest rates by also including risk aversion through the introduction of the market price of risk. From the viewpoint of complex systems science and its multidisciplinary ...
Dynamical and topological conditions triggering the spontaneous activation of Izhikevich neuronal networks
Understanding the dynamic behavior of neuronal networks in silico is crucial for tackling the analysis of their biological counterparts and making accurate predictions. Of particular importance is determining the structural ...
Preparation and Mechano-Functional Characterization of PEGylated Fibrin Hydrogels: Impact of Thrombin Concentration
Three-dimensional (3D) neuronal cultures grown in hydrogels are promising platforms to design brain-like neuronal networks in vitro. However, the optimal properties of such cultures must be tuned to ensure a hydrogel matrix ...
Quasi-symmetries in complex networks: a dynamical model approach
The existence of symmetries in complex networks has a significant effect on network dynamic behaviour. Nevertheless, beyond topological symmetry, one should consider the fact that real-world networks are exposed to ...
Hydrodynamic and geometric effects in the sedimentation of model run-and-tumble microswimmers
The sedimentation process in an active suspension is the result of the competition between gravity and the autonomous motion of particles. We carry out simulations of run-and-tumble squirmers that move in a fluid medium, ...
Maximizing friction by liquid flow clogging in confinement
In the nanoscale regime, flow behaviors for liquids show qualitative deviations from bulk expectations. In this work, we reveal by molecular dynamics simulations that plug flow down to nanoscale induces molecular friction ...
Jump-diffusion models for valuing the future: Discounting under extreme situations
We develop the process of discounting when underlying rates follow a jump-diffusion process, that is, when, in addition to diffusive behavior, rates suffer a series of finite discontinuities located at random Poissonian ...
Inferring structure of cortical neuronal networks from activity data: A statistical physics approach
Understanding the relation between cortical neuronal network structure and neuronal activity is a fundamental unresolved question in neuroscience, with implications to our understanding of the mechanism by which neuronal ...
Three-State Opinion Model on Complex Topologies
We investigate opinion diffusion on complex networks and the interplay between the existence of neutral opinion states and non-trivial network structures. For this purpose, we apply a three-state opinion model based on ...
Noise focusing in neuronal tissues: Symmetry breaking and localization in excitable networks with quenched disorder
We introduce a coarse-grained stochastic model for the spontaneous activity of neuronal cultures to explain the phenomenon of noise focusing, which entails localization of the noise activity in excitable networks with ...
Noise-induced polarization switching in complex networks
The combination of bistability and noise is ubiquitous in complex systems, from biology to social interactions, and has important implications for their functioning and resilience. Here we use a simple three-state dynamical ...
Influence of topology in the mobility enhancement of pulse-coupled oscillator synchronization
In this work we revisit the nonmonotonic behavior (NMB) of synchronization time with velocity reported for systems of mobile pulse-coupled oscillators (PCOs). We devise a control parameter that allows us to predict in which ...
Public libraries embrace citizen science: Strengths and challenges
Can public libraries become hubs for citizen science? In line with the principles of citizen science, this question was answered collaboratively with librarians from the Barcelona Network of Public Libraries who performed ...
Novel mechanism for oscillations in catchbonded motor-filament complexes
Generation of mechanical oscillations is ubiquitous to a wide variety of intracellular processes, ranging from activity of muscle fibers to oscillations of the mitotic spindle. The activity of motors plays a vital role in ...
Magnetically driven confined colloids: From enhanced diffusion to bidirectional transport
Inspired by previous experimental results, we use numerical simulations to investigate the collective dynamics of paramagnetic colloidal particles confined between two plates closer than twice the particle diameter and ...
Linear response theory and Green-Kubo relations for active matter
We address the question of how interacting active systems in a nonequilibrium steady state respond to an external perturbation. We establish an extended fluctuation-dissipation theorem for active Brownian particles (ABP), ...
Aligning active particles py package
The package performs molecular-dynamics-like agent-based simulations for models of aligning self-propelled particles in two dimensions such as e.g. the seminal Vicsek model or variants of it. In one class of the covered ...
Mapping the structure and function of whole-mount retinal organoids
Cell therapy is a therapeutic avenue for retinal degenerative diseases. Photoreceptortransplantation faces challenges in obtaining high-quality and mature photoreceptors that caneffectively integrate and function, facilitating ...
Spatio-temporal organization of correlated local activity within global avalanches in slowly driven interfaces
We study the jerky response of slowly driven fronts in disordered media, just above the depinning transition. We focus on how spatially disconnected clusters of internally correlated activity lead to large-scale velocity ...
Dominance of metric correlations in two-dimensional neuronal cultures described through a Random Field Ising Model
We introduce a novel random field Ising model, grounded on experimental observations, to assess the importance of metric correlations in cortical circuits in vitro. Metric correlations arise from both the finite axonal ...
