Browsing by Author "PerezReche, Francisco J."
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Biological invasion in soil: complex network analysis
PerezReche, Francisco J.; Taraskin, S. N.; Neri, F. M.; Gilligan, C. A.; da F. Costa, L.; Viana, M. P.; Otten, Wilfred; Grinev, D. (Institute of Electrical and Electronics Engineers, 200907)A network model for soil pore space is developed and applied to the analysis of biological invasion of microorganisms in soil. The model was parameterized for two soil samples with different compaction (loosely and densely ... 
Complexity and anisotropy in host morphology make populations less susceptible to epidemic outbreaks
PerezReche, Francisco J.; Taraskin, Sergei N.; Costa, Luciano da F.; Neri, Franco M.; Gilligan, Christopher A. (The Royal Society, 201007)One of the challenges in epidemiology is to account for the complex morphological structure of hosts such as plant roots, crop fields, farms, cells, animal habitats and social networks, when the transmission of infection ... 
Drivinginduced crossover: from classical criticality to selforganized criticality
PerezReche, Francisco J.; Truskinovsky, Lev; Zanzotto, Giovanni (American Physical Society, 200812)We propose a spin model with quenched disorder which exhibits in slow driving two drastically different types of critical nonequilibrium steady states. One of them corresponds to classical criticality requiring finetuning ... 
Epidemics in networks of spatially correlated threedimensional rootbranching structures
Handford, Thomas P.; PerezReche, Francisco J.; Taraskin, Sergei N.; Costa, Luciano da F.; Miazaki, Mauro; Neri, Franco M.; Gilligan, Christopher A. (The Royal Society, 201103)Using digitized images of the threedimensional, branching structures for root systems of bean seedlings, together with analytical and numerical methods that map a common susceptible–infected–recovered (‘SIR’) epidemiological ... 
Exact spin–spin correlation function for the zerotemperature randomfield Ising model
Handford, P.; PerezReche, Francisco J.; Taraskin, S. N. (Institute of Physics, 201201)An exact expression for the spin–spin correlation function is derived for the zerotemperature randomfield Ising model defined on a Bethe lattice of arbitrary coordination number. The correlation length describing dynamic ... 
Heterogeneity in susceptible–infected–removed (SIR) epidemics on lattices
Neri, Franco M.; PerezReche, Francisco J.; Taraskin, Sergei N.; Gilligan, Christopher A. (The Royal Society, 201102)The percolation paradigm is widely used in spatially explicit epidemic models where disease spreads between neighbouring hosts. It has been successful in identifying epidemic thresholds for invasion, separating noninvasive ... 
Martensitic transformations: from continuum mechanics to spin models and automata
PerezReche, Francisco J.; Truskinovsky, Lev; Zanzotto, Giovanni (Springer Verlag, 200906)We present a new methodology for the systematic reduction of a continuum theory of martensitic transformations to a spin system whose dynamics can be described by an automaton. Our prototypical model reproduces most of ... 
Modelling fungal colonies and communities: challenges and opportunities
Falconer, Ruth E.; Bown, James L.; McAdam, Eilidh; PerezReche, Paco; Sampson, Adam T.; van den Bulcke, Jan; White, Nia A.; PerezReche, Francisco J. (International Mycological Association, 201012)This contribution, based on a Special Interest Group session held during IMC9, focuses on physiological based models of filamentous fungal colony growth and interactions. Fungi are known to be an important component of ... 
Numerical approach to metastable states in the zerotemperature randomfield Ising model
PerezReche, Francisco J.; Rosinberg, Martin L.; Tarjus, Gilles (American Physical Society, 200802)We study numerically the number of singlespinflip stable states in the T=0 random field Ising model on random regular graphs of connectivity z=2 and z=4 and on the cubic lattice. The annealed and quenched complexities ... 
Resilience of soil to biological invasion: analysis of spread on networks
Otten, Wilfred; Grinev, Dmitri V.; PerezReche, Francisco J.; Neri, Franco; da Costa, Luciano; Biana, Marcel; Gilligan, Chris; Taraskin, Sergei (International Union of Soil Sciences, 201008)A network model for soil pore volume is presented and applied to the analysis of biological invasion of microorganisms. The pore geometry of two soils with a relatively high or low bulk density were quantified with the ... 
Reverse engineering of biochar
Morales, Verónica L.; PerezReche, Francisco J.; Hapca, Simona M.; Hanley, Kelly L.; Lehmann, Johannes; Zhang, Wei (Elsevier, 20150218)This study underpins quantitative relationships that account for the combined effects that starting biomass and peak pyrolysis temperature have on physicochemical properties of biochar. Metadata was assembled from published ... 
Stable, metastable and unstable states in the meanfield randomfield Ising model at T = 0
Rosinberg, Martin L.; Tarjus, Gilles; PerezReche, Francisco J. (Institute of Physics, 200810)We compute the probability distribution of the number of metastable states at a given applied field in the meanfield randomfield Ising model at T = 0. Remarkably, there is a nonzero probability in the thermodynamic limit ... 
Synergy in spreading processes: from exploitative to explorative foraging strategies
PerezReche, Francisco J.; Ludlam, Jonathan J.; Taraskin, Sergei N.; Gilligan, Christopher A. (American Physical Society, 201105)An epidemiological model which incorporates synergistic effects that allow the infectivity and/or susceptibility of hosts to be dependent on the number of infected neighbours is proposed. Constructive synergy induces an ... 
The T = 0 randomfield Ising model on a Bethe lattice with large coordination number: hysteresis and metastable states
Rosinberg, Martin L.; Tarjus, Gilles; PerezReche, Francisco J. (Institute of Physics, 200903)In order to elucidate the relationship between rateindependent hysteresis and metastability in disordered systems driven by an external field, we study the Gaussian RFIM at T = 0 on regular random graphs (Bethe lattice) ...