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An algorithm is given for the reconstruction of the initial state of a key–stream generator (KSG) consisting of a short linear feedback shift register (length ≤ 30), whose clock is controlled by an algebraically simple internal KSG. The algorithm is based on the fact that the expected number of possible LFSR initial states exponentially decreases with the… (More)

A generalization of Sullivan inequality on the ratio of the probability of a linear code to that of any of its cosets is proved. Starting from this inequality, a sufficient condition for successful decoding of linear codes by a probabilistic method is derived. A probabilistic decoding algorithm for " low–density parity–check codes " is also analyzed. The… (More)

- Sasa Malkov, Miodrag V. Zivkovic, Milos V. Beljanski, Snezana D. Zaric
- 2005

The correlations of primary and secondary structures were analyzed using proteins with known structure from Protein Data Bank. The correlation values of amino acid type and the eight secondary structure types at distant position were calculated for distances between-25 and 25. Shapes of the diagrams indicate that amino acids polarity and capability for… (More)

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