Results 21 to 30 of about 1,656 (235)

The Cramer’s rule for the parametrization of phenol and its hydroxylated byproducts: UV spectroscopy vs. high performance liquid chromatography

open access: yes, 2020
A linear algebra theorem like Cramer’s rule was used for the analysis of a system of equations obtained from UV spectroscopy, and results were compared against those obtained from HPLC analysis.
Moreno-Piraján, Juan Carlos   +4 more
core   +1 more source

Cramer's rule applied to flexible systems of linear equations [PDF]

open access: yes, 2012
. Systems of linear equations, called flexible systems, with coefficients having uncertainties of type o (.) or O (.) are studied. In some cases an exact solution may not exist but a general theorem that guarantees the existence of an admissible solution,
Justino, Julia, van den Berg, Imme
core   +1 more source

A condensed Cramer’s rule for the minimum-norm least-squares solution of linear equations

open access: yes, 2012
In this paper, we will derive the condensed Cramer’s rule of Werner for minimal-norm least-squares solution of linear equations Ax=b from the Cramer’s rule of Ben-Israel and Verghese.
Ji, Jun
core   +1 more source

Membangkitkan Suatu Matriks Unimodular Dengan Python

open access: yesJurnal Derivat, 2018
An SPL can be represented as a multiplication of the coefficient matrix and solution vector of the SPL. Determining the solution of an SPL can use the inverse matrix method and Cramer's rule, where both can use the concept of the determinant of a matrix.
Samsul Arifin, Indra Bayu Muktyas
doaj   +1 more source

Simplified Portfolio Optimization Using Cramer’s Rule in Excel

open access: yes, 2022
The matrix algebra associated with finding minimum variance portfolio weights, mapping the efficient frontier, and determining the tangency portfolio weights is greatly simplified in Excel by applying Cramer’s Rule.
Arnold, Tom   +2 more
core  

Fluid Biomarkers of Disease Burden and Cognitive Dysfunction in Progressive Supranuclear Palsy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Identifying objective biomarkers for progressive supranuclear palsy (PSP) is crucial to improving diagnosis and establishing clinical trial and treatment endpoints. This study evaluated fluid biomarkers in PSP versus controls and their associations with regional 18F‐PI‐2620 tau‐PET, clinical, and cognitive outcomes.
Roxane Dilcher   +10 more
wiley   +1 more source

On Quasilinear Algebra of Linear Interval Equations and Interval Cramer’s Rule

open access: yesMathematics
Determining the solution set of a system of linear interval equations is often a difficult task. Establishing a general theory that includes the classical theory of systems of linear equations as a special case opens the door to extensive and challenging
Yılmaz Yılmaz
doaj   +1 more source

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni   +10 more
wiley   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

A High Dimensional Cramer’s Rule Connecting Homogeneous Multilinear Equations to Hyperdeterminants [PDF]

open access: yes
We present a new algorithm for solving homogeneous multilinear equations, which are high dimensional generalisations of solving homogeneous linear equations. First, we present a linear time reduction from solving generic homogeneous multilinear equations
Narayanan, Anand Kumar, Joux, Antoine
core   +1 more source

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