Results 31 to 40 of about 1,097 (148)

Class of constructions of even variables Boolean function with optimum algebraic immunity

Tongxin xuebao, 2009
A second order recursive construction of even variables Boolean function with optimum algebraic immunity was proposed.It could be observed that the constructed Boolean functions have well cryptographic properties,such as good balance,high algebraic ...
CHEN Yin-dong, LU Pei-zhong
doaj   +2 more sources

One Note About the Tu-Deng Conjecture in Case $\mathop{\mathrm{w}}\nolimits(t)=5$

IEEE Access, 2019
Let k ≥ 2 be an integer, and define St := {(a, b) ∈ Z2|0 ≤ a, b ≤ 2k - 2, a + b = t(mod 2k - 1), w(a) + w(b) ≤ k - 1}, where t ∈ Z, 1 ≤ t ≤ 2k - 2.
Yindong Chen, Fei Guo, Zhangquan Gong, Weihong Cai   +3 more
doaj   +1 more source

On the Algebraic Immunity of Boolean Function

TELKOMNIKA Indonesian Journal of Electrical Engineering, 2014
In view of the construction requirements of Boolean functions with many good cryptography properties, through the analysis of the relationship between the function values on the vectors with weight not more than d  and the algebraic immunity, a method to determine the higher order algebraic immunity function is given.
Cao Hao, Wang Huige
openaire   +1 more source

Random Chemostats with Competition and Different Kinetics to Investigate the Growth of the Gut Microbiome

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate some chemostat models incorporating wall growth, competition, random fluctuations on the dilution rate, and different consumption functions (Monod and Haldane). We analyze the asymptotic behavior of the solutions of the corresponding random differential systems to establish conditions on the model parameters under which the ...
Javier López‐de‐la‐Cruz, Felipe Rivero, Carlos R. Takaessu Jr.   +2 more
wiley   +1 more source

A Graph Theoretic Approach to Construct Desired Cryptographic Boolean Functions

Axioms, 2019
In this paper, we present four product operations to construct cryptographic boolean functions from smaller ones with predictable Walsh spectrum. A lot of cryptographic properties of boolean functions can be presented by their Walsh spectrum.
Modjtaba Ghorbani, Matthias Dehmer, Vahid Taghvayi-Yazdelli, Frank Emmert-Streib   +3 more
doaj   +1 more source

Measuring the time‐varying market efficiency in the prewar and wartime Japanese stock market, 1924–1943

Asia‐Pacific Economic History Review, Volume 65, Issue 1, Page 131-159, March 2025.
Abstract This study examines the adaptive market hypothesis in the prewar and wartime Japanese stock market using a new market capitalization‐weighted price index. First, we find that the degree of market efficiency varies over time and with major historical events. This implies that the hypothesis is supported in this market.
Kenichi Hirayama, Akihiko Noda
wiley   +1 more source

Hybrid tabu search algorithm for excellent Boolean function

Tongxin xuebao, 2022
Boolean function in symmetric cryptographic algorithm must satisfy excellent cryptographic criteria to ensure the security of the algorithm.By combining the advantages of tabu search algorithm and hill climbing algorithm, a new heuristic generation ...
Weiqiong WANG, Haojie XU, Meng CUI, Qiong XIE   +3 more
doaj   +2 more sources

NOISE IMMUNITY OF THE ALGEBRAIC GEOMETRIC CODES

International Journal of Computing, 2019
Linear block noise-immune codes constructed according to algebraic curves (algebraic geometric codes) are considered, their design properties are evaluated, algorithms of construction and decoding are studied. The energy efficiency of the transmission of discrete messages by M-ary orthogonal signals in the application of algebraic geometric codes is ...
Alexandr Kuznetsov, Ievgeniia Kolovanova, Oleksii Smirnov, Tetiana Kuznetsova   +3 more
openaire   +2 more sources

Astigmatic changes after Descemet membrane endothelial keratoplasty (DMEK) in decompensated penetrating keratoplasty grafts

Acta Ophthalmologica, EarlyView.
Abstract Purpose To evaluate the surgery‐induced changes of astigmatism after Descemet membrane endothelial keratoplasty (DMEK) in eyes with failed previous penetrating keratoplasty (PK). Design Retrospective, interventional cohort study based on prospective DMEK database.
Florian Thomas Steinberg, Jithmi Weliwitage, Marie von Berg, Silvia Schrittenlocher, Simona Schlereth, Claus Cursiefen, Björn Bachmann   +6 more
wiley   +1 more source

Mathematics anxiety: Effects of age, gender and culture

British Journal of Educational Psychology, EarlyView.
Abstract Background Many studies have indicated that mathematics anxiety is a significant problem for many people and is an important topic for research. Mathematics anxiety is multidimensional. In particular, it is important to distinguish between worry and emotionality components, and between trait and state anxiety.
Ann Dowker
wiley   +1 more source