The dynamics of human immunodeficiency virus infection under antiretroviral therapy is investigated using a cellular automata model where the effectiveness of each drug is self-adjusted by the concentration of CD4+  T infected cells present at each time step. The effectiveness of the drugs and...

We study a cellular automata model to test the timing of antiretroviral therapy strategies for the dynamics of infection with human immunodeficiency virus (HIV). We focus on the role of virus diffusion when its population is included in previous cellular automata model that describes the...

Multifractal properties of the energy time series of short α-helix structures, specifically from a polyalanine family, are investigated through the MF-DFA technique (multifractal detrended fluctuation analysis). Estimates for the generalized Hurst exponent h(q) and its associated multifractal...

The role of competition and frustration on the multifractal properties of the local magnetization of aperiodic Ising models defined on hierarchical lattices is analyzed. Competing ferro-antiferromagnetic interactions are introduced by a deterministic two-letter aperiodic sequence, while...

The phase diagram, the thermodynamic and ground-state critical properties of the random-field Ising model defined on the diamond family of hierarchical lattices with arbitrary dimension and scaling factor b=2 is investigated. The continuous Gaussian and the discrete delta-bimodal initial...