Results 11 to 20 of about 71,031 (218)

On semicardinal quadrature formulae [PDF]

open access: yesMathematics of Computation, 1974
The present paper concerns the semicardinal quadrature formulae introduced in Part III of the reference [3]. These were the limiting forms of Sard’s best quadrature formulae as the number of nodes increases indefinitely. Here we give a new derivation and characterization of these formulae.
Schoenberg, I. J., Silliman, S. D.
openaire   +1 more source

2.4 GHz BLE Receiver With Power-Efficient Quadrature RF-to-Baseband-Current-Reuse Architecture for Low-Power IoT Applications

open access: yesIEEE Access, 2021
In this paper, a 2.4 GHz Bluetooth low energy receiver employing a power-efficient quadrature RF-to-baseband-current-reuse architecture is presented for low-power low-voltage internet of things applications. The proposed quadrature RF-to-baseband-current-
Beomyu Park, Kuduck Kwon
doaj   +1 more source

Stochastic Quadrature Formulas [PDF]

open access: yesMathematics of Computation, 1969
A class of formulas for the numerical evaluation of multiple integrals is described, which combines features of the Monte-Carlo and the classical methods. For certain classes of functions—defined by smoothness conditions—these formulas provide the fastest possible rate of convergence to the integral. Asymptotic error estimates are derived, and a method
openaire   +2 more sources

Some Generalized Error Inequalities and Applications

open access: yesJournal of Inequalities and Applications, 2008
We present a family of four-point quadrature rule, a generalization of Gauss-two point, Simpson's , and Lobatto four-point quadrature rule for twice-differentiable mapping. Moreover, it is shown that the corresponding optimal quadrature formula presents
Mir NazirAhmad, Zafar Fiza
doaj   +2 more sources

Optimal quadrature formulas in Sobolev space for solving the generalized Abel integral equation [PDF]

open access: yesE3S Web of Conferences
In this article, a composite optimal quadrature formula is constructed for an approximate analytical solution of the generalized integral Abel equation in the Sobolev functional space.
Daliyev Bakhtiyor   +5 more
doaj   +1 more source

Majorana solution of the Thomas-Fermi equation [PDF]

open access: yes, 2001
We report on an original method, due to Majorana, leading to a semi-analytical series solution of the Thomas-Fermi equation, with appropriate boundary conditions, in terms of only one quadrature. We also deduce a general formula for such a solution which
Salvatore Esposito, Sommerfeld A.
core   +2 more sources

A Novel Broadband Microwave Lumped-Element Quadrature Hybrid MMIC

open access: yesIEEE Access, 2022
In this paper, a novel broadband lumped-element quadrature hybrid MMIC for interferometric correlation radiometer is proposed. First, the cause of the bandwidth limitation in the lumped-element branch-line coupler is analyzed, which is the two identical ...
Xi Chen   +5 more
doaj   +1 more source

The Effect of the Bending Beam Width Variations on the Discrepancy of the Resulting Quadrature Errors in MEMS Gyroscopes

open access: yesMicromachines, 2022
In this paper, we develop a new approach in order to understand the origin of the quadrature error in MEMS gyroscopes. As the width of the flexure springs is a critical parameter in the MEMS design, it is necessary to investigate the impact of the width ...
Alexandre Azier   +3 more
doaj   +1 more source

Chebyshev type quadrature formulas [PDF]

open access: yesMathematics of Computation, 1970
Quadrature formulas of the form \[ ∫ − 1 1 f ( x ) d x ≈ 2 n ∑ i = 1 n
openaire   +2 more sources

Diffusive approximation of a time-fractional Burger's equation in nonlinear acoustics [PDF]

open access: yes, 2016
A fractional time derivative is introduced into the Burger's equation to model losses of nonlinear waves. This term amounts to a time convolution product, which greatly penalizes the numerical modeling.
Lombard, Bruno, Matignon, Denis
core   +3 more sources

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