Results 81 to 90 of about 259,092 (193)

Determinants and inverses of perturbed periodic tridiagonal Toeplitz matrices

Advances in Difference Equations, 2019
In this paper, we deal mainly with a class of periodic tridiagonal Toeplitz matrices with perturbed corners. By matrix decomposition with the Sherman–Morrison–Woodbury formula and constructing the corresponding displacement of matrices we derive the ...
Yunlan Wei, Xiaoyu Jiang, Zhaolin Jiang, Sugoog Shon   +3 more
doaj   +1 more source

Milk Yield and Composition Curves During the Postweaning Machine‐Milking Period in Red Deer Hinds

New Zealand Journal of Agricultural Research, Volume 69, Issue 3, June 2026.
Deer milk is a dairy product valued for its unique composition and market potential. Research into deer lactation dynamics remains limited. In this study, 4,386 test‐day records from 170 red deer (Cervus elaphus L.) hinds in New Zealand were used to model the milk yield and composition curves using random regression models based on Legendre polynomials.
Qinyi Luo, Ana C. Marshall, Natalie Pickering, Chris Tidey, Shannon M. Clarke, Ken G. Dodds, Nicholas W. Sneddon, Nicolas Lopez‐Villalobos   +7 more
wiley   +1 more source

Bounds on Hermitian-Toeplitz determinant for starlike, convex and bounded turning functions associated with the exponential function

Математичні Студії
In the article we derive sharp bounds for the third-order Hermitian-Toeplitz determinant of starlike and convex functions associated with the exponential function, as well as for their inverse classes.
Nabadwip Sarkar
doaj   +1 more source

A Study of Determinants and Inverses for Periodic Tridiagonal Toeplitz Matrices with Perturbed Corners Involving Mersenne Numbers

Mathematics, 2019
In this paper, we study periodic tridiagonal Toeplitz matrices with perturbed corners. By using some matrix transformations, the Schur complement and matrix decompositions techniques, as well as the Sherman-Morrison-Woodbury formula, we derive explicit ...
Yunlan Wei, Yanpeng Zheng, Zhaolin Jiang, Sugoog Shon   +3 more
doaj   +1 more source

Mixture‐Based Estimation of Multivariate Data Hypervolume

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 3, June 2026.
ABSTRACT Estimating the hypervolume occupied by multivariate data is a fundamental problem in statistics and data science, with applications ranging from ecology and machine learning to multi‐objective optimization and Bayesian inference. Traditional approaches rely on geometric approximations, kernel density estimation, or convex‐hull constructions ...
Luca Scrucca
wiley   +1 more source

DC Side Impedance Modelling of an Actual Line Commutated Converter High Voltage Direct Current System and DC Resonance Characteristics

High Voltage, Volume 11, Issue 3, Page 725-737, June 2026.
ABSTRACT The stability analysis of Line Commutated Converter High Voltage Direct Current (LCC‐HVDC) is of considerable engineering importance. Establishing its analytical mathematical model helps to analyse stability and the factors that affect stability of the system.
Juanjuan Wang, Juntao Liu, Qingming Xin, Ze Mo, Baixian Ye, Yuekun Liu, Chuang Fu   +6 more
wiley   +1 more source

Sharp Estimates for q-Convex Functions and the Associated Classical Family

Axioms
In this article, we introduce and study two new subclasses of analytic univalent functions defined via the Ma–Minda function. Specifically, we consider the class Cξq of q-convex functions involving a suitable Ma–Minda function ξq(z), together with its ...
Kuppusami Sakthivel, Hari Mohan Srivastava, Srikandan Sivasubramanian   +2 more
doaj   +1 more source

Next Generation 7 Tesla Arterial Spin Labeling With Rotated Spiral Acquisition Enables Mesoscale Resolution in 3D Brain Perfusion and Functional MRI

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2702-2717, May 2026.
ABSTRACT Purpose To achieve high resolution (≤ 1 mm isotropic) whole‐brain perfusion imaging at 7 T with next generation ASL pulse sequence, reconstruction algorithm, and MRI hardware. Methods We capitalized on three major innovations: (1) FLASH‐based pseudo‐Continuous ASL (pCASL) sequence with rotated golden‐angle stack‐of‐spirals (rGA‐SoS) sampling; (
Chenyang Zhao, Fanhua Guo, Zidong Yang, Xingfeng Shao, Samantha J. Ma, Alexander J. S. Beckett, An T. Vu, David A. Feinberg, Danny J. J. Wang   +8 more
wiley   +1 more source

Lattice Theory and Toeplitz Determinants

, 2018
This is a survey of our recent joint investigations of lattices that are generated by finite Abelian groups. In the case of cyclic groups, the volume of a fundamental domain of such a lattice is a perturbed Toeplitz determinant with a simple Fisher–Hartwig symbol.
Albrecht Büttcher, Lenny Fukshansky, Stephan Ramon Garcia, Hiren Maharaj   +3 more
openaire   +2 more sources

Effects of Beet‐Vinasse (Condensed Molasses Soluble) Addition on the Performance, Milk Fatty Acid Profile, Digestibility, Blood Parameters, and Ruminal Fermentation of Early Lactating Holstein Cows

Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.
Vinasse supplementation at 1.5%–3% enhances nutrient digestibility, ruminal fermentation and production efficiency in early‐lactating Holstein cows. However, without rumen microbial or immune response data, long‐term safety and efficacy require further study.
A. Rahimi, F. Fatehi, H. Rafiee, A. Kahyani   +3 more
wiley   +1 more source