Results 141 to 150 of about 562,872 (260)

Quaternions and Hadamard Matrices [PDF]

Proceedings of the American Mathematical Society, 1952
openaire   +1 more source

A Hybrid Data Assimilation Approach Integrating Kalman With Deep Learning‐Based Updates for Nonlinear and Non‐Gaussian Groundwater Systems

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract In hydrological research, data assimilation (DA) is a powerful tool for integrating observational data with numerical models, significantly enhancing predictive accuracy. However, nonlinear groundwater systems often exhibit high‐dimensional and non‐Gaussian characteristics in observations, parameters, and state variables, posing substantial ...
Lei Yao, Jiangjiang Zhang, Yuxin Ye, Chenglong Cao, Jianyun Zhang, Junliang Jin   +5 more
wiley   +1 more source

A quantum approximate optimization method for finding Hadamard matrices. [PDF]

Sci Rep
Suksmono AB.
europepmc   +1 more source

Designs from good Hadamard matrices

, 2018
Chenlu Shi, Boxin Tang
semanticscholar   +1 more source

Pseudo-Hadamard matrices [PDF]

International scientific conference "Ufa autumn mathematical school - 2021", 2021
openaire   +1 more source

Addressing ecological challenges from a quantum computing perspective

Methods in Ecology and Evolution, Volume 17, Issue 3, Page 632-649, March 2026.
Abstract With increased access to data and the advent of computers, the use of statistical tools and numerical simulations is becoming commonplace for ecologists. These approaches help improve our understanding of ecological phenomena and their underlying mechanisms in increasingly complex environments.
Maxime Clenet, Maxime Dion, F. Guillaume Blanchet   +2 more
wiley   +1 more source

Circulant Hadamard matrices and Hermitian circulant complex Hadamard matrices

International Mathematical Forum, 2021
openaire   +1 more source

Cointegrating Polynomial Regressions With Power Law Trends

Journal of Time Series Analysis, Volume 47, Issue 2, Page 331-344, March 2026.
ABSTRACT The common practice in cointegrating polynomial regressions (CPRs) often confines nonlinearities in the variable of interest to stochastic trends, thereby overlooking the possibility that they may be caused by deterministic components. As an extension, we propose univariate and multivariate CPRs that incorporate power law deterministic trends.
Yicong Lin, Hanno Reuvers
wiley   +1 more source

Enhanced Sensitivity and Resolution in Biomolecular CEST NMR Experiments Using the Extended Hadamard Encoding Scheme. [PDF]

Anal Chem
Kim J, Silva M, Kupče E, Jayanthi S, Lupulescu A, Rosenzweig R, Frydman L.   +6 more
europepmc   +1 more source

Kidney Tumor Segmentation With a Multistage Adaptive Boundary‐Aware Network

Annals of the New York Academy of Sciences, Volume 1557, Issue 1, March 2026.
This study introduces MABS‐Net, a multistage adaptive boundary‐aware network for kidney tumor segmentation. By integrating boundary‐aware multiscale feature extraction, a three‐stage cascaded architecture, and contrastive learning with online hard example mining, this model effectively captures subtle edge cues and boosts tissue discrimination.
Ruoyu Wu, Jing Shi, Jitao Zhou
wiley   +1 more source