Results 81 to 90 of about 43,930 (262)

An algorithm for rescaling a matrix positive definite

Linear Algebra and its Applications, 1987
Given a square matrix M, find D diagonal, so that DM is positive definite, i.e. has its field of values in the right half plane. Here it is shown that this problem can be formulated as an infinite set of linear inequalities, and solved by solving a finite sequence of linear programming problems.
openaire   +1 more source

Performance improvement of discrete‐time linear‐quadratic regulators applied to uncertain linear systems using the Tikhonov regularization method

Asian Journal of Control, EarlyView.
Abstract The linear‐quadratic regulator (LQR) problem of optimal control of an uncertain discrete‐time linear system (DTLS) is revisited in this paper from the perspective of Tikhonov regularization. We show that an optimally chosen regularization parameter reduces, compared to the classical LQR, the values of a scalar error function, as well as the ...
Fernando Pazos, Amit Bhaya
wiley   +1 more source

The positive definite matrix completion problem

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 2015
No abstract ...
openaire   +2 more sources

Do consumers and healthcare professionals report the same adverse event differently? A paired analysis of duplicate vaccine safety reports in Norway

British Journal of Clinical Pharmacology, EarlyView.
Aim This study aimed to compare how Norwegian healthcare professionals (HCPs) and consumers reported the same adverse event (AE) following immunization with vaccines against COVID‐19 during the COVID‐19 pandemic. Specifically, we aimed to compare the extent to which HCPs and consumers reported information relevant for assessing the causal relationship ...
Tommy Emil Dzus, Johaina Sarrage, Hilde Samdal, François Montastruc, Elena Rocca   +4 more
wiley   +1 more source

Mathematical aspects for electrical network connections

KKU Engineering Journal, 2016
In this paper, we survey the role of mathematics in electrical network connections. We discuss the behavior of current flows, voltages and impedances mainly for series-parallel networks.
Pattrawut Chansangiam
doaj   +1 more source

Model‐Enabled Knowledge Transfer Across Cell Lines, Culture Scales and Conditions

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Mechanistic models are central to quantitative understanding and optimization of Chinese hamster ovary (CHO) cell culture processes, but their utility is often restricted by parameter sets calibrated for specific cell lines, scales, or operating conditions.
Luxi Yu, Antonio del Rio Chanona, Cleo Kontoravdi   +2 more
wiley   +1 more source

Measuring Sphericity in Positive Semi-Definite Matrices

Axioms
The measure of sphericity for positive semi-definite matrices plays a crucial role in understanding their geometric properties, especially in high-dimensional settings.
Dário Ferreira, Sandra S. Ferreira
doaj   +1 more source

A Matrix Inequality for the Inversions of the Restrictions of a Positive Definite Hermitian Matrix

Advances in Linear Algebra & Matrix Theory, 2013
We exploit the theory of reproducing kernels to deduce a matrix inequality for the inverse of the restriction of a positive definite Hermitian matrix.
Weixiong Mai, Mo Yan, Tao Qian, Matteo Dalla Riva, Saburou Saitoh   +4 more
openaire   +2 more sources

Gen‐AI Is Not an Option for Environment Sustainability‐Enabling of Gen‐AI for Responsible and Green Supply Chains Using a Grey Network Map (GNM)

Business Strategy and the Environment, EarlyView.
ABSTRACT Environmental sustainability in supply chains is no longer considered a compliance concern. It has become a strategic capability challenge, as firms seek to use Generative artificial intelligence (Gen‐AI) to improve decision quality, resource efficiency and responsible operations.
Anbesh Jamwal, Anil Kumar, Ashutosh Samadhiya, Sunil Luthra   +3 more
wiley   +1 more source

An Algorithm for Computing Geometric Mean of Two Hermitian Positive Definite Matrices via Matrix Sign

Abstract and Applied Analysis, 2014
Using the relation between a principal matrix square root and its inverse with the geometric mean, we present a fast algorithm for computing the geometric mean of two Hermitian positive definite matrices.
F. Soleymani, M. Sharifi, S. Shateyi, F. Khaksar Haghani   +3 more
doaj   +1 more source