Due to the influence of indoor space environments, carrier phase information obtained by BeiDou pseudo-satellite often has issue cycle slips, which makes user unable carry out high-precision positioning. Aiming at problem ambiguity resolution (AR) and location in large-scale occluded (LSOS), a factor graph (FG) position method based on group ranging estimation pseudolite is proposed. Firstly, i...

We propose an adaptive reversible data hiding method with superior visual quality and capacity in which an adaptive generalized difference expansion (AGDE) method is applied to an integer-to-integer subband transform (I2I-ST). I2I-ST performs the reversible subband transform and the AGDE method is a state-of-the-art method of reversible data hiding. The results of experiments we performed objec...

Stream ciphers are often used in applications where high speed and low delay are a requirement. The Solitaire stream cipher was developed by B. Schneier as a paper-and-pencil cipher. Solitaire gets its security from the inherent randomness in a shuffled deck of cards. In this paper we investigate semigroups and groups properties of the Solitaire stream cipher and its regular modiÞcations.

A hybrid shuffled complex evolution approach with pattern search for unconstrained optimization Viviana Cocco Mariani a,∗, Leandro dos Santos Coelho b a Department of Mechanical Engineering, Pontifical Catholic University of Parana, Imaculada Conceição, 1155, Zip code 80215-910, Curitiba, PR, Brazil b Industrial and Systems Engineering Graduate Program, Pontifical Catholic University of Parana,...

Let a deck of n cards be shuffled by successively exchanging the cards in positions 1, 2,. .. , n with cards in randomly chosen positions. We show that for n ≥ 18, the identity permutation is the most likely. We prove a surprising symmetry of the resulting distribution on permutations. We also obtain the limiting distribution of the number of fixed points as n → ∞.

In the case of selective genotyping, the usual permutation test to establish statistical significance for quantitative trait locus (QTL) mapping can give inappropriate significance thresholds, especially when the phenotype distribution is skewed. A stratified permutation test should be used, with phenotypes shuffled separately within the genotyped and ungenotyped individuals.

Over the past few decades, many algorithms have been proposed to improve performance of speech encryption over un-secure channel (i.e., Internet). In this paper, security level was enhanced using a dynamic dual chaotic based on Hénon map. algorithm, elements are shuffled in random fashion. Moreover, when both state variables free be used for shuffling index is toggled randomly between them acco...