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Nonlinear conduction in composites above percolation threshold — beyond the backbone

Bardhan, K.K. - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 267-277

, greater is the nonlinearity. Analysis of nonlinear data is made with emphasis on scaling properties. dI/dV is found to …

Persistent link: https://www.econbiz.de/10011058267

Scaling of distances in correlated complex networks

Hołyst, Janusz A.; Sienkiewicz, Julian; Fronczak, Agata; … - In: Physica A: Statistical Mechanics and its Applications 351 (2005) 1, pp. 167-174

even the presence of strong correlations in complex networks does not break a universal scaling of distances between … fixed value of the product kikj. The scaling is valid over several decades. Parameters A and B depend on the mean value of a …

Persistent link: https://www.econbiz.de/10011058315

Scaling laws in urban supply networks

Kühnert, Christian; Helbing, Dirk; West, Geoffrey B. - In: Physica A: Statistical Mechanics and its Applications 363 (2006) 1, pp. 96-103

show power-law scaling as well, when the number of “supply stations” is plotted over the population size. Surprisingly …, only some supply systems display a linear scaling with population size. Others show sublinear or superlinear scaling. We … suggest an interpretation regarding the kind of scaling law that is expected in dependence of the function and constraints of …

Persistent link: https://www.econbiz.de/10011058321

Turbulence temperature spectra: Scaling theory

Dekker, H. - In: Physica A: Statistical Mechanics and its Applications 370 (2006) 2, pp. 275-278

The leading anomalous Kolmogorov scaling exponent μθ in the inertial range of temperature spectra is calculated on the …

Persistent link: https://www.econbiz.de/10011058354

Long-term persistence in the sea surface temperature fluctuations

Monetti, Roberto A.; Havlin, Shlomo; Bunde, Armin - In: Physica A: Statistical Mechanics and its Applications 320 (2003) C, pp. 581-589

We study the temporal correlations in the sea surface temperature (SST) fluctuations around the seasonal mean values in the Atlantic and Pacific Oceans. We apply a method that systematically overcome possible trends in the data. We find that the SST persistence, characterized by the correlation...

Persistent link: https://www.econbiz.de/10011058383

Markov processes, Hurst exponents, and nonlinear diffusion equations: With application to finance

Bassler, Kevin E.; Gunaratne, Gemunu H.; McCauley, Joseph L. - In: Physica A: Statistical Mechanics and its Applications 369 (2006) 2, pp. 343-353

correlations like those found in fractional Brownian motion (fBm). We construct a large set of scaling solutions of Fokker … increments. For the scaling solutions, we show how to reduce the calculation of the probability density to a single integration … implies correlations fails for Markov processes with scaling solutions. Finally, we discuss the question of scaling of the …

Persistent link: https://www.econbiz.de/10011058407

On a Markov chain model for population growth subject to rare catastrophic events

Huillet, Thierry E. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 23, pp. 4073-4086

We consider a Markov chain model for population growth subject to rare catastrophic events. In this model, the moves of the process are getting algebraically rare (as from x−λ) when the process visits large heights x, and given a move occurs and the height is large, the chain grows by one...

Persistent link: https://www.econbiz.de/10011058598

Scaling of swimming sequences in copepod behavior: Data analysis and simulation

Schmitt, François G.; Seuront, Laurent; Hwang, Jiang-Shiou - In: Physica A: Statistical Mechanics and its Applications 364 (2006) C, pp. 287-296

We consider symbolic sequences of copepod behavior, classified as “break” and “slow swimming” states. Successive residence times for each state have been recorded for 327 symbolic times series obtained from 52 different trajectories. We performed a symbolic dynamics analysis of the...

Persistent link: https://www.econbiz.de/10011058873

Silicon wet etching: Hillock formation mechanisms and dynamic scaling properties

Mirabella, D.A.; Suárez, G.P.; Suárez, M.P.; Aldao, C.M. - In: Physica A: Statistical Mechanics and its Applications 395 (2014) C, pp. 105-111

scaling properties of the 1D model were also studied. Resorting to the height–height correlation function and the structure … factor, it is shown that the model presents conventional and anomalous scaling (faceted) depending on the stability of the … scaling ansatz. …

Persistent link: https://www.econbiz.de/10011058995

Statistical analysis of fluctuations in the ECG morphology

Bartsch, Ronny; Hennig, Thomas; Heinen, Arno; … - In: Physica A: Statistical Mechanics and its Applications 354 (2005) C, pp. 415-431

We investigate ECG recordings of healthy subjects (H subjects) and those with heart failure (HF subjects) based on a new measure derived from the shape of the ECG signal during each heart beat. From this measure we construct sequences, called “morphograms”, which are complementary to...

Persistent link: https://www.econbiz.de/10011059098