Results 21 to 30 of about 2,219,613 (298)

Color watermarking algorithm combining the quantum discrete cosine transform with the sinusoidal–tent map

Frontiers in Physics
To overcome the drawbacks of the existing sinusoidal map and tent map, this paper proposes the design of a sinusoidal–tent (ST) map. The test results indicate that the new chaotic system exhibits more significant advantages in chaos control.
Ping-Ping Zeng, Xi Zhou, De-Fei Zhong, Su-Hua Chen, Li-Hua Gong   +4 more
doaj   +1 more source

A Color Image Encryption Technique Based on Bit-Level Permutation and Alternate Logistic Maps

Journal of Intelligent Systems, 2019
The paper presents an approach to encrypt the color images using bit-level permutation and alternate logistic map. The proposed method initially segregates the color image into red, green, and blue channels, transposes the segregated channels from the ...
Bisht Ankita, Dua Mohit, Dua Shelza, Jaroli Priyanka   +3 more
doaj   +1 more source

A Multi-Carrier Structure for Chaos –Shift Keying

Journal of Kufa for Mathematics and Computer, 2021
The next generation of wireless communications networks needs higher data transfer rates; this requires to provide wireless communication systems operating at higher spectral efficiencies.
Salsabeel Hasan, Zahir Hussain
doaj   +1 more source

Adaptive Color Image Encryption Scheme Based on Multiple Distinct Chaotic Maps and DNA Computing

Mathematics, 2022
In this paper, we propose an adaptive encryption scheme for color images using Multiple Distinct Chaotic Maps (MDCM) and DNA computing. We have chosen three distinct chaotic maps, including a 2D-Henon map, a Tent map, and a Logistic map, to separately ...
Shaista Mansoor, Parsa Sarosh, Shabir A. Parah, Habib Ullah, Mohammad Hijji, Khan Muhammad   +5 more
doaj   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

Molecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola, Yasmine Illi, Anna Bircher, Marijn Wilmink, Rachele F. Malagutti, Solenn Ottié, Cordelia Schuler, Pedro A. Ruiz, Cheryl de Vallière, Klaus Seuwen, Gerhard Rogler, Martin Hausmann   +11 more
wiley   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

Molecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi, Tuan Khang Huynh, Adway Kadam, Zahra Kardan, Yue Yan, Amina Jamal Laham, Sampath Kumar Loganathan   +6 more
wiley   +1 more source

Arginine methylation as a regulatory ratchet in cancer: From substrate selection to malignant‐state stabilization

Molecular Oncology, EarlyView.
Arginine methylation can be viewed as a persistence‐prone post‐translational modification regulated by a network of PRMTs. Competitive and compensatory interactions among PRMTs can redistribute methylation across substrate pools shaped by sequence, structural, spatial, and environmental layers, reinforcing RNA‐processing, chromatin, and signaling ...
So Hyun Kwon, Ji Min Lee
wiley   +1 more source

Exploring Simplicity Bias in 1D Dynamical Systems

Entropy
Arguments inspired by algorithmic information theory predict an inverse relation between the probability and complexity of output patterns in a wide range of input–output maps. This phenomenon is known as simplicity bias.
Kamal Dingle, Mohammad Alaskandarani, Boumediene Hamzi, Ard A. Louis   +3 more
doaj   +1 more source

Chaotic stream encryption scheme based on topological conjugate chaotic systems of Tent map

工程科学学报, 2015
A general chaotic stream encryption scheme is proposed by using two chaotic systems which topologically conjugate with Tent map and a method to generate independent and identically distributed chaotic streams.
TIAN Qing, XU Zheng-guang, TIAN Li
doaj   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source