Results 31 to 40 of about 307,424 (289)

Statistical Machine Learning Model for Uncertainty Planning of Distributed Renewable Energy Sources in Distribution Networks

Frontiers in Energy Research, 2021
New energy power systems with high-permeability photovoltaic and wind power are high-dimensional dynamic large-scale systems with nonlinear, uncertain and complex operating characteristics.
Xueqian Fu, Xianping Wu, Nian Liu
doaj   +1 more source

Nonlinear Optical Molecular Switches for Alkali Ion Identification

Molecules, 2014
This work demonstrates by means of DFT and ab initio calculations that recognition of alkali cations can be achieved by probing the variations of the second-order nonlinear optical properties along the commutation process in spiropyran/merocyanine ...
Aurélie Plaquet, Benoît Champagne, Frédéric Castet   +2 more
doaj   +1 more source

Contractions of Degenerate Quadratic Algebras, Abstract and Geometric [PDF]

, 2017
Quadratic algebras are generalizations of Lie algebras which include the symmetry algebras of 2nd order superintegrable systems in 2 dimensions as special cases.
Miller Jr., Willard, Ruiz, Mauricio A. Escobar, Subag, Eyal   +2 more
core   +1 more source

Quadratic Forms in Random Matrices with Applications in Spectrum Sensing

Entropy
Quadratic forms with random kernel matrices are ubiquitous in applications of multivariate statistics, ranging from signal processing to time series analysis, biomedical systems design, wireless communications performance analysis, and other fields ...
Daniel Gaetano Riviello, Giusi Alfano, Roberto Garello   +2 more
doaj   +1 more source

Multiple-Output Production Modeled with Three Functional Forms

Journal of Agricultural and Resource Economics, 1992
Aggregate dual models are specified to examine multiple-output production relationships in each of four major, geographically dispersed, agricultural states (California, Iowa, Texas, and Florida).
Pedro A. Villezca-Becerra, C. Richard Shumway   +1 more
doaj   +1 more source

On old relations of Lie theory, classical geometry and gauge theory

SciPost Physics Proceedings, 2023
Having been led by hadron interactions and low-energy photoproduction to SU(4) and non-compact SU*(4) symmetry, the general background turned out to be projective geometry (PG) of $P^3$, or when considering line and Complex geometry to include gauge ...
Rolf Dahm
doaj   +1 more source

Systems of quadratic forms.

Journal für die reine und angewandte Mathematik (Crelles Journal), 1984
Let \(u_ F(r)\) be the smallest integer such that every system of r quadratic forms in n variables, defined over a field F, has a nontrivial common zero if \(n>u_ F(r)\). Let \(u_ F(r)=\infty\) if no such integer exists. Then \(u_ F(r)\leq frac{1}{2}(r^ 2+r)u_ F(1)\) and there exist fields for which this bound is best possible when \(r=1,2,3\). If F is
openaire   +2 more sources

Canonisation reper of complex of lines of theree-dimensional flag

Қарағанды университетінің хабаршысы. Математика сериясы, 2016
The paper studies the three-parameter geometric image of the line - a complex of line of three-dimensional space of the flag. It identifies the main forms that depend linearly on three basic parameters diferentials.
A.T. Musin
doaj   +1 more source

Stochastic models of simple controlled systems just-in-time

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
We propose a new and simple approach for the mathematical description of a stochastic system that implements the well-known just-in-time principle. This principle (abbreviated JIT ) is also known as a just-in-time manufacturing or Toyota Production ...
Alexander A Butov, Anatoly A Kovalenko
doaj   +1 more source

Beamforming Using Exact Evaluation of Leakage and Ergodic Capacity of MU-MIMO System

Sensors, 2021
Closed-form evaluation of key performance indicators (KPIs) of telecommunication networks help perform mathematical analysis under several network configurations.
Ahmad Kamal Hassan, Muhammad Moinuddin
doaj   +1 more source