In this study, we introduced a new memristive chaotic system with the rich dynamic behavior, and then proposed chaotic-based image encryption scheme which is based on permutation–confusion–substitution structure. our scheme, Hamming distance used to design plain-related initial condition, generated sequences are assigned permutation, diffusion, substitution stages. permutation stage, an effect ...

A special class of cubic graphs are the cycle permutation graphs. A cycle permutation graph Pn(α) is defined by taking two vertex-disjoint cycles on n vertices and adding a matching between the vertices of the two cycles.In this paper we determine a good upper bound for tenacity of cycle permutation graphs.

We study a random permutation of lattice box in which each is given Boltzmann weight with energy equal to the total Euclidean displacement. Our main result establishes band structure model as box-size N tends infinity and inverse temperature $$\beta $$ zero; particular, we show that mean displacement order $$\min \{1/\beta , N\}$$ . In one dimension our results are more precise, specifying lead...

This paper presents a new characterizations of bipartite permutation graphs and a structure theorem for (0,1)-matrices with a special consecutive 1's property. These results lead to a linear time algorithm for the minimum buuer size problem when restricted to bipartite permutation graphs; this problem arises in relational database systems and is NP-hard for a general graph.

In this paper a square cellular network for data permutation in a SIMD model is described. It has n=4 2–permuters only, and realizes an arbitrary permutation pattern in two passes. For this network a programming algorithm is provided with O(n) sequential time complexity. Due to its regular cellular structure the square network is suitable for VLSI implementation.

The current study focuses on the problem of determining investment attrаctiveness of countries by means of monitoring regional stock markets. The method of using the permutation entropy as a model of investment attractiveness estimation is suggested. We have calculated the permutation entropy for the time series of stock markets of countries for the period from 2005 to 2018. The countries with ...

This article discusses problems with and solutions to performing valid permutation tests for quantitative trait loci in the presence of polygenic effects. Although permutation testing is a popular approach for determining statistical significance of a test statistic with an unknown distribution--for instance, the maximum of multiple correlated statistics or some omnibus test statistic for a gen...