Results 21 to 30 of about 470,881 (224)

A Micro Absolute Distance Measurement Method Based on Dispersion Compensated Polarized Low-Coherence Interferometry

open access: yesSensors, 2020
Micro absolute distance measurement (MADM) is widely used in industrial and military fields. To achieve high accuracy and frequency response, a polarized low-coherence interferometry (PLCI)-based method for MADM is proposed.
Xun Sun   +5 more
doaj   +1 more source

Evaluation of Multi-Incidence Angle Polarimetric Gaofen-3 SAR Wave Mode Data for Significant Wave Height Retrieval

open access: yesRemote Sensing, 2022
Significant wave height (SWH) is one of the most important descriptors for ocean wave fields. The polynomial regression (PolR) and Gaussian process regression (GPR) models are implemented to explore the effects of polarization and incidence angles on the
Chenqing Fan   +5 more
doaj   +1 more source

Determination of Glucose Concentration By Rotation of Polarization Plane of He-Ne Laser [PDF]

open access: yesمجلة التربية والعلم, 2011
In this research, the optical activity of glucose solution had been studied through the studying of influence of this solution in rotation of polarization plane of laser He-Ne light, the different concentrations of glucose solution were selected for ...
Zead T. Ahmed Ameer F. Hammeed
doaj   +1 more source

A Method for Forest Canopy Height Inversion Based on UAVSAR and Fourier–Legendre Polynomial—Performance in Different Forest Types

open access: yesDrones, 2023
Mapping forest canopy height at large regional scales is of great importance for the global carbon cycle. Polarized interferometric synthetic aperture radar is an efficient and irreplaceable remote sensing tool.
Hongbin Luo   +4 more
doaj   +1 more source

On the irrationality of moduli spaces of projective hyperk\"ahler manifolds [PDF]

open access: yesÉpijournal de Géométrie Algébrique
The aim of this paper is to estimate the irrationality of moduli spaces of hyperk\"ahler manifolds of types K3$^{[n]}$, Kum$_{n}$, OG6, and OG10. We prove that the degrees of irrationality of these moduli spaces are bounded from above by a universal
Daniele Agostini   +2 more
doaj   +1 more source

An approximate solution of one singular integro-differential equation using the method of orthogonal polynomials

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2020
Two computational schemes for solving boundary value problems for a singular integro-differential equation, which describes the scattering of H-polarized electromagnetic waves by a screen with a curved boundary, are constructed.
Galina A. Rasolko, Sergei M. Sheshko
doaj   +1 more source

Effect of Structural Uncertainty in Passive Microwave Soil Moisture Retrieval Algorithm

open access: yesSensors, 2020
Passive microwave sensors use a radiative transfer model (RTM) to retrieve soil moisture (SM) using brightness temperatures (TB) at low microwave frequencies. Vegetation optical depth (VOD) is a key input to the RTM. Retrieval algorithms can analytically
Lanka Karthikeyan   +3 more
doaj   +1 more source

Square-rich fixed point polynomial evaluation on FPGAs [PDF]

open access: yes, 2014
Polynomial evaluation is important across a wide range of application domains, so significant work has been done on accelerating its computation. The conventional algorithm, referred to as Horner's rule, involves the least number of steps but can lead to
McLoughlin, Ian V.   +5 more
core   +1 more source

A two-variable approach to solve the polynomial Lyapunov equation

open access: yes, 2001
A two-variable polynomial approach to solve the one-variable polynomial Lyapunov equation is proposed. Lifting the problem from the one-variable to the two-variable context allows to use Faddeev-type recursions in order to solve the polynomial Lyapunov ...
Peeters, Ralf, Rapisarda, Paolo
core   +2 more sources

Isomorphism of Compactifications of Vector Bundles Moduli: Nonreduced Moduli

open access: yesМоделирование и анализ информационных систем, 2015
We continue the study of the compactification of the moduli scheme for Gieseker-semistable vector bundles on a nonsingular irreducible projective algebraic surface S with polarization L, by locally free sheaves.
N. V. Timofeeva
doaj   +1 more source

Home - About - Disclaimer - Privacy