Results 1 to 10 of about 140,898 (120)

From Permutation Patterns to the Periodic Table [PDF]

open access: yesریاضی و جامعه, 2023
(The above abstract has been extracted by the translator from the original article (L. Pudwell, From Permutation Patterns to the Periodic Table, Notices of the American Mathematical Society, 67 994–1001.))Abstract: Permutation patterns is a burgeoning ...
Saeid Alikhani, Maryam Safazadeh
doaj   +1 more source

A Novel Chaotic Permutation-Substitution Image Encryption Scheme Based on Logistic Map and Random Substitution

open access: yesIEEE Access, 2022
Privacy is a serious concern related to sharing videos or images among people over the Internet. As a method to preserve images’ privacy, chaos-based image encryption algorithms have been used widely to fulfil such a requirement.
Jameel Arif   +6 more
doaj   +1 more source

Chaotic Color Image Encryption Based on Eight-Base DNA-Level Permutation and Diffusion

open access: yesEntropy, 2023
Images, as a crucial information carrier in the era of big data, are constantly generated, stored, and transmitted. Determining how to guarantee the security of images is a hot topic in the information security community. Image encryption is a simple and
Wei Fan, Taiyong Li, Jianan Wu, Jiang Wu
doaj   +1 more source

Permutations, Signs, and Sum Ranges

open access: yesAxioms, 2023
The sum range SRx;X, for a sequence x=(xn)n∈N of elements of a topological vector space X, is defined as the set of all elements s∈X for which there exists a bijection (=permutation) π:N→N, such that the sequence of partial sums (∑k=1nxπ(k))n∈N converges
Sergei Chobanyan   +3 more
doaj   +1 more source

Generating biometric random cryptographic key based on unique fingerprint features [PDF]

open access: yesهوش محاسباتی در مهندسی برق, 2023
This paper uses the unique biometric features of fingerprints to generate random cryptographic keys. The main aspects of the security of the generated key include the privacy of the fingerprint and the randomness and complexity of the key generation ...
Bahram Rashidi, Ali Goudarzi
doaj   +1 more source

A Re-Evaluation of the Swiss Hail Suppression Experiment Using Permutation Techniques Shows Enhancement of Hail Energies When Seeding

open access: yesAtmosphere, 2021
Grossversuch IV is a large and well documented experiment on hail suppression by silver iodide seeding. The original 1986 evaluation remained vague, although indicating a tendency to increase hail when seeding.
Armin Auf der Maur, Urs Germann
doaj   +1 more source

The Refined Composite Downsampling Permutation Entropy Is a Relevant Tool in the Muscle Fatigue Study Using sEMG Signals

open access: yesEntropy, 2021
Surface electromyography (sEMG) is a valuable technique that helps provide functional and structural information about the electric activity of muscles. As sEMG measures output of complex living systems characterized by multiscale and nonlinear behaviors,
Philippe Ravier   +3 more
doaj   +1 more source

The Use of the Permutation Algorithm for Suboptimising the Position of Used Nozzles on the Field Sprayer Boom

open access: yesApplied Sciences, 2022
The worn-out nozzles of field sprayers cause agricultural treatment to be uneven and therefore ineffective. Spray nozzles are consumable elements of the field sprayer that are subject to inspection and in the event of their excessive wear should be ...
Jacek Wawrzosek, Stanisław Parafiniuk
doaj   +1 more source

Scale Invariant Digital Color Image Encryption Using a 3D Modular Chaotic Map

open access: yesIEEE Access, 2021
Cryptography is one of the most important security mechanisms for the transmission of digital media on the Internet. Most proposed cryptographic image methods based on chaotic maps are dependent upon image sizes and most of them worked on square images ...
Ali Momeni Asl   +2 more
doaj   +1 more source

Dynamic S-Box Design Using a Novel Square Polynomial Transformation and Permutation

open access: yesIEEE Access, 2021
New era ciphers employ substitution boxes (S-boxes) which assist in the provision of security for the plaintext in the encryption phase and transforming the ciphertext on the receiver side into original plaintext in the decryption phase.
Amjad Hussain Zahid   +11 more
doaj   +1 more source

Home - About - Disclaimer - Privacy