Browsing by Author "Zagordi, Osvaldo"

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1D periodic potentials with gaps vanishing at k=0

Michelangeli, Alessandro; Zagordi, Osvaldo (2006-04-18)

Appearance of energy bands and gaps in the dispersion relations of a periodic potential is a standard feature of Quantum Mechanics. We investigate the class of one-dimensional periodic potentials for which all gaps vanish ...
Finite size corrections to random Boolean networks

Leone, Michele; Pagnani, Andrea; Parisi, Giorgio; Zagordi, Osvaldo (2007-11-15)

Since their introduction, Boolean networks have been traditionally studied in view of their rich dynamical behavior under different update protocols and for their qualitative analogy with cell regulatory networks. More ...
Forcing reversibility in the no-strand-bias substitution model allows for the theoretical and practical identifiability of its 5 parameters from pairwise DNA sequence comparisons.

Zagordi, Osvaldo; Lobry, Jean R. (Elsevier, 2005-03)

Because of the base pairing rules in DNA, some mutations experienced by a portion of DNA during its evolution result in the same substitution, as we can only observe differences in coupled nucleotides. Then, in the absence ...
Statistical physics methods in computational biology

Zagordi, Osvaldo (2007-07-03)

The interest of statistical physics for combinatorial optimization is not new, it suffices to think of a famous tool as simulated annealing. Recently, it has also resorted to statistical inference to address some "hard" ...

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