Results 41 to 50 of about 1,278 (116)

Correlations in Networks associated to Preferential Growth

, 2004
Combinations of random and preferential growth for both on-growing and stationary networks are studied and a hierarchical topology is observed. Thus for real world scale-free networks which do not exhibit hierarchical features preferential growth is ...
Andreas Grönlund, Caldarelli G, Catanzaro M, de Solla Price D J, Kim Sneppen, Krapivsky P, Maslov S, Petter Minnhagen, Simon H A   +8 more
core   +1 more source

Extremal driving as a mechanism for generating long-term memory

, 2000
It is argued that systems whose elements are renewed according to an extremal criterion can generally be expected to exhibit long-term memory. This is verified for the minimal extremally driven model, which is first defined and then solved for all system
Bouchaud J-P, Bouchaud J-P, Bouchaud J-P, Bray A J, Callisto E, David Head, Derrida B, Gumbel E J, Head D A, Majumdar S N, Wilkinson D   +10 more
core   +1 more source

Pattern formation of microtubules and motors: inelastic interaction of polar rods

, 2005
We derive a model describing spatio-temporal organization of an array of microtubules interacting via molecular motors. Starting from a stochastic model of inelastic polar rods with a generic anisotropic interaction kernel we obtain a set of equations ...
Igor S. Aranson, J. Howard, J. Kim, K. Takiguchi, Lev S. Tsimring, M. Doi   +5 more
core   +1 more source

Self organization in a minority game: the role of memory and a probabilistic approach

, 2000
A minority game whose strategies are given by probabilities p, is replaced by a 'simplified' version that makes no use of memories at all. Numerical results show that the corresponding distribution functions are indistinguishable.
Cavagna, Ceva, Challet, Challet, E Burgos, Horacio Ceva, Johnson   +6 more
core   +1 more source

On the thresholds, probability densities, and critical exponents of Bak-Sneppen-like models

, 2004
We report a simple method to accurately determine the threshold and the exponent $\nu$ of the Bak-Sneppen model and also investigate the BS universality class.
Bak, Bak, Bak, Barabási, Boettcher, Caldarelli, Datta, de Boer, de Boer, Dickman, Dickman, Dorogovtsev, Felici, Garcia, Garlaschelli, Grassberger, Gutenberg, Head, Head, Head, Li, Lovejoy, Manna, Manna, Marsili, Maslov, Meester, Mikeska, Olami, Paczuski, Paczuski, Paczuski, Paczuski, Pastor-Satorras, Peters, Peters, Pismak, Rios   +37 more
core   +1 more source

Observation of two-wave structure in strongly nonlinear dissipative granular chains

, 2006
In a strongly nonlinear viscous granular chain under conditions of loading that exclude stationary waves (e.g., impact by a single grain) we observe a pulse that consists of two interconnected but distinct parts.
Aldo H. Romero, Alexandre Rosas, E. B. Herbold, Katja Lindenberg, L. D. Landau, S. Sen, T. Pöschel, V. F. Nesterenko, V. F. Nesterenko, Vitali F. Nesterenko   +9 more
core   +1 more source

Self-Emerging and Turbulent Chimeras in Oscillator Chains

, 2010
We report on a self-emerging chimera state in a homogeneous chain of nonlocally and nonlinearly coupled oscillators. This chimera, i.e. a state with coexisting regions of complete and partial synchrony, emerges via a supercritical bifurcation from a ...
A. Pikovsky, Arkady Pikovsky, Grigory Bordyugov, Michael Rosenblum, S. Strogatz, Y. Kuramoto, Y. Kuramoto   +6 more
core   +1 more source

Global and Local Similarity Learning in Multi-Kernel Space for Nonnegative Matrix Factorization. [PDF]

Knowl Based Syst, 2023
Peng C, Hou X, Chen Y, Kang Z, Chen C, Cheng Q.   +5 more
europepmc   +1 more source

Two-Dimensional Semi-Nonnegative Matrix Factorization for Clustering. [PDF]

Inf Sci (N Y), 2022
Peng C, Zhang Z, Chen C, Kang Z, Cheng Q.   +4 more
europepmc   +1 more source

Exploring the Impact of Salicylic Acid and Farmyard Manure on Soil Rhizospheric Properties and Cadmium Stress Alleviation in Maize (Zea mays L.). [PDF]

Plants (Basel), 2023
Ali HH, Shehzadi N, Zaheer MS, Seleiman MF, Aldhuwaib KJ, Din Khan WU, Raza A.   +6 more
europepmc   +1 more source