Results 21 to 30 of about 338,457 (200)
Polars of real singular curves [PDF]
Polar varieties have in recent years been used by Bank, Giusti, Heintz, Mbakop, and Pardo, and by Safey El Din and Schost, to find efficient procedures for determining points on all real components of a given non-singular algebraic variety. In this note we review the classical notion of polars and polar varieties, as well as the construction of what we
Mork, Heidi Camilla, Piene, Ragni
openaire +3 more sources
Model Structure Optimization for Fuel Cell Polarization Curves
The applications of evolutionary optimizers such as genetic algorithms, differential evolution, and various swarm optimizers to the parameter estimation of the fuel cell polarization curve models have increased.
Markku Ohenoja +2 more
doaj +1 more source
The lines-of-sight to highly reddened SNe Ia show peculiar continuum polarization curves, growing toward blue wavelengths and peaking at $\lambda_{max} \lesssim 0.4 \mu m$, like no other sight line to any normal Galactic star.
Cikota, Aleksandar +4 more
core +1 more source
Direct measurement of giant electrocaloric effect in BaTiO3 multilayer thick film structure beyond theoretical prediction [PDF]
The electrocaloric effect of BaTiO3 multilayer thick film structure was investigated by direct measurement and theoretical calculation. The samples were prepared by the tape-casting method, which had 180 dielectric layers with an average thickness of 1.4\
Bai, Yang +2 more
core +2 more sources
Polar transform and local positivity for curves [PDF]
Using the duality of positive cones, we show that applying the polar transform from convex analysis to local positivity invariants for divisors gives interesting and new local positivity invariants for curves. These new invariants have nice properties similar to those for divisors.
McCleerey, Nicholas, Xiao, Jian
openaire +3 more sources
Recently, extracting the precise values of unknown parameters of the polymer electrolyte membrane fuel cell (PEMFC) is considered one of the most widely nonlinear and semi-empirical optimization problems.
Ahmed S. Menesy +5 more
doaj +1 more source
Theoretical study of ferroelectric potassium nitrate
We present a detailed study of the structural behavior and polarization reversal mechanism in phase III of KNO$_3$, an unusual ferroelectric material in which the nitrate groups rotate during polarization reversal.
David Vanderbilt +2 more
core +1 more source
The electrochemical reduction of molybdate ions in tartaric electrolyte has been investigated in this work. Kinetics and mechanism of the electrochemical process have been studied by cyclic and linear voltammetric polarization methods.
Vusala Asim Majidzade +4 more
doaj +1 more source
Our previous paper outlined the general aspects of the theory of radio light curve and polarization formation for pulsars. We predicted the one-to-one correspondence between the tilt of the linear polarization position angle of the and the circular ...
Beskin, Vasily +2 more
core +1 more source
Improvement of micro-hardness and electrochemical properties of Al-4%Cu-0.5%Mg alloy by Ag addition
The base system of alloys Al-4% Cu-0. 5% Mg, known as the designation of duralumin 201, are very appreciated by the aerospace, partly automotive and industrial in general, for its great strength, high temperature and corrosion resistant.
Reinaldo Correa +2 more
doaj +1 more source

