Results 21 to 30 of about 141,907 (269)

Simulation of Onset of the Capillary Surface Wave in the Ultrasonic Atomizer

open access: yesMicromachines, 2021
The novel drug delivery system refers to the formulations and technologies for transporting a pharmaceutical compound in the body as it is needed to safely achieve its desired therapeutic effects.
Yu-Lin Song   +3 more
doaj   +1 more source

A Review: Recent Progress in the Design and Development of Nonlinear Radars

open access: yesRemote Sensing, 2021
This paper presents an extensive review of nonlinear response-based radar systems. Nonlinear radars are generally used for clutter suppression purposes. These radars detect the nonlinear response generated by diodes and transistors are used as a tag for ...
Ashish Mishra, Changzhi Li
doaj   +1 more source

The Approximation of Harmonic Functions by Harmonic Polynomials and by Harmonic Rational Functions [PDF]

open access: yesBulletin of the American Mathematical Society, 1929
which converges uniformly f or all values of 6. This is of course a general fact, tha t if a given function can be uniformly approximated as closely as desired by a linear combination of other functions, then that function can be expanded in a uniformly convergent series of which each term is a linear combination of those other functions, and ...
openaire   +3 more sources

Control of PMSM Drive Using Lookup Table Based Compensated Duty Ratio Optimized Direct Torque Control (DTC)

open access: yesIEEE Access, 2023
There are several ways to reduce the ripple magnitude for direct torque-controlled permanent magnet synchronous motor (PMSM) drives. In this work, the compensated duty ratio optimized direct torque control (DDTC-TC) method was proposed to reduce the ...
Berhanu Deggefa Lemma   +1 more
doaj   +1 more source

Harmonic analysis of harmonic functions in the plane [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
A continuous function on the complex plane is harmonic if and only if the span of its compositions with entire functions is not dense in the space of continuous functions in the topology of uniform convergence on compact sets.
openaire   +2 more sources

Harmonic conjugation in harmonic matroids

open access: yesDiscrete Mathematics, 2009
This paper was finished in 2008.
openaire   +2 more sources

Analysis of arbitrary tooth profiles of cylindrical gears using normal polar coordinates (Application to the generation of a gear tooth profile by a given tooth profile of rack cutter and its interference problem)

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
Various coordinate systems have been used in tooth profile analysis for cylindrical gears. An effective approach to tooth profile expression using normal polar coordinates is proposed.
Yuya MURAYAMA   +3 more
doaj   +1 more source

On an atomic decomposition in Banach spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
An atomic decomposition is considered in Banach space.  A method for constructing an atomic decomposition of Banach  space, starting with atomic decomposition of  subspaces  is presented. Some relations between them are established.
Telman Gasymov, Chingiz Hashimov
doaj  

A High Power Quality Buck-H Auxiliary Power Converter in Railway Applications

open access: yesFrontiers in Energy Research, 2022
DC voltage utilization and AC voltage harmonics are important evaluation indexes for Auxiliary Power Converter in Railway Applications. To improve the above two indicators, a novel switch-mode modulation method and quasi-PR control strategy for Buck-H ...
Zheng Lan   +6 more
doaj   +1 more source

Analysis of trimming in internal gear cutting using normal polar coordinates

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
An effective approach to tooth-profile expression using normal polar coordinates has been proposed by Watanabe in 1949, but not applied to practical design.
Yuya MURAYAMA   +2 more
doaj   +1 more source

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