Results 41 to 50 of about 2,434,105 (152)

gammaSTAR: A framework for the development of dynamic, real‐time capable MR sequences

Magnetic Resonance in Medicine, Volume 94, Issue 4, Page 1485-1499, October 2025.
Abstract Purpose To present the real‐time capability and advanced MR sequence library of the MR sequence development framework gammaSTAR. Methods The presented platform consists of four different components: (1) a frontend for sequence development combined with a Python backend for sequence generation; (2) a Lua backend for the creation of hardware ...
Simon Konstandin, Matthias Günther, Daniel C. Hoinkiss   +2 more
wiley   +1 more source

Image scrambler based on novel 4-D hyperchaotic system and magic square with fast Walsh–Hadamard transform [PDF]

, 2022
A novel 4-D hyperchaotic system that have seven positive parameters in third order with thirteen terms is proposed, in this paper, the proposed chaotic behavior is proved by analysis of the Lyapunov's exponent, fractional dimension, zero-one test ...
Hussein Ali Ismael, Al-Shamery, Ameer Al-Haq, Hayder Kadhim Zghair, Ismael, Hussein Ali, Zghair, Hayder Kadhim, Ameer Al-Haq Al- Shamery   +5 more
core   +1 more source

Animal Trajectory Imputation and Uncertainty Quantification via Deep Learning

Environmetrics, Volume 36, Issue 6, September 2025.
ABSTRACT Imputing missing data in animal trajectories is crucial for understanding animal movements during unobserved periods. However, the traditional methods, such as linear interpolation and the continuous‐time correlated random walk model, are often inadequate to capture the complexity of animal movements.
Kehui Yao, Ian P. McGahan, Jun Zhu, Daniel J. Storm, Daniel P. Walsh   +4 more
wiley   +1 more source

Applications of Sparse Signal Recovery: 2D-Pattern Matching and Sparse Walsh-Hadamard Transform Computation [PDF]

, 2021
We study two problems related to sparse signal recovery. The first problem considered is querying a sub-image of size square of M in a large image database of size square of N to determine all the locations where sub-image appears.
Gao, Jiahui
core   +1 more source

Universal Joint Maximum Likelihood Frame Synchronization and PLS Decoding for DVB-S2X Systems

Signals
Compared to DVB-S2, DVB-S2X features a more intricate signaling structure. These signaling fields are employed not only in standard frames but are also frequently utilized within superframe structures.
Xin-Qi Liao, Yih-Min Chen
doaj   +1 more source

Randomized Orthogonalization Process With Reorthogonalization

Numerical Linear Algebra with Applications, Volume 32, Issue 4, August 2025.
ABSTRACT The dimension reduction technique of random sketching is advantageous in significantly reducing computational complexity. In orthogonalization processes like the Gram‐Schmidt (GS) algorithm, incorporating random sketching results in a halving of computational costs compared to the classical/modified Gram‐Schmidt (CGS/MGS) algorithms, while ...
Yongseok Jang, Laura Grigori
wiley   +1 more source

An Efficient Joint Frame and Physical Layer Signaling Code Detection Method for DVB-S2

IEEE Access
The Digital Video Broadcasting–Satellite Second Generation (DVB-S2) standard enhances coding and modulation techniques beyond those of DVB-S.
Xin-Qi Liao, Yih-Min Chen
doaj   +1 more source

Sketched and Truncated Polynomial Krylov Methods: Evaluation of Matrix Functions

Numerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.
ABSTRACT Among randomized numerical linear algebra strategies, so‐called sketching procedures are emerging as effective reduction means to accelerate the computation of Krylov subspace methods for, for example, the solution of linear systems, eigenvalue computations, and the approximation of matrix functions.
Davide Palitta, Marcel Schweitzer, Valeria Simoncini   +2 more
wiley   +1 more source

Trotterless Simulation of Open Quantum Systems for NISQ Quantum Devices

Advanced Quantum Technologies, Volume 8, Issue 1, January 2025.
Open quantum systems exhibit complex dynamics that can be simulated on quantum computers to provide physical insights into their behavior. This work proposes a new method for simulating these systems that reduces the effect of noise and errors on modern quantum hardware.
Colin Burdine, Enrique P. Blair
wiley   +1 more source

Winner Update on Walsh-Hadamard Domain for Fast Motion Estimation

, 2006
[[abstract]]Motion estimation (ME) plays an important role in video compression. Block-based ME has been adopted in most video compression standards due to its efficiency.
Shou-Der Wei, Shang-Hong Lai, Shao-Wei Liu   +2 more
core   +1 more source