Results 81 to 90 of about 98,048 (175)

Loudness matching of complex tones simulating sounds from electric trucks

Acta Acustica
With electric powertrains quickly advancing in the heavy vehicle sector, there is an increasing interest in the industry to find a general practice for evaluating tonal sounds. The challenge to set requirements is complex.
Nyman Birgitta Elise, Nykänen Arne
doaj   +1 more source

Harmonic Current Suppression of Dual Three-Phase Permanent Magnet Synchronous Motor with Improved Proportional-Integral Resonant Controller

Energies
The impedance of the harmonic plane in a dual three-phase permanent magnet synchronous motor (DTP-PMSM) is very low, meaning that even small harmonic voltages can induce significant harmonic currents, particularly at the fifth and seventh harmonic ...
Lei Chen, Min Chen, Bodong Li, Xinnan Sun, Feng Jiang   +4 more
doaj   +1 more source

Fifteen series on harmonic numbers and quintic central binomial coefficients [PDF]

Discrete Mathematics Letters
Chunli Li, Wenchang Chu
doaj   +1 more source

Series with Summands Involving Harmonic Numbers

For each positive integer $m$, the $m$th order harmonic numbers are given by $$H_n^{(m)}=\sum_ ...
openaire   +2 more sources

On generalized degenerate harmonic numbers

Indian Journal of Pure and Applied Mathematics
In this paper, we give various properties including binomial coefficients, degenerate Daehee numbers, degenerate Stirling numbers of the first kind and some types of generalized degenerate harmonic numbers. Particularly, we define generalized degenerate harmonic numbers of rank and give some interesting identities and results.
KOPARAL, SİBEL, ÖMÜR, NEŞE, Duran, Ömer   +2 more
openaire   +2 more sources

A polynomial identity and some of its new consequences [PDF]

Electronic Journal of Mathematics
Michel Bataille, Robert Frontczak
doaj   +1 more source

Some Generalized Harmonic Number Identities

, 2011
Added examples, computer program and some textual ...
openaire   +2 more sources

New congruences involving harmonic numbers

, 2014
Let $p>3$ be a prime. For any $p$-adic integer $a$, we determine $$\sum_{k=0}^{p-1}\binom{-a}k\binom{a-1}kH_k,\ \ \sum_{k=0}^{p-1}\binom{-a}k\binom{a-1}kH_k^{(2)},\ \ \sum_{k=0}^{p-1}\binom{-a}k\binom{a-1}k\frac{H_k^{(2)}}{2k+1}$$ modulo $p^2$, where $H_k=\sum_ ...
openaire   +2 more sources

SHI: a framework for spatial harmonic imaging. [PDF]

Sci Rep
Diaz JLB, Korvink JG, Kunka D.
europepmc   +1 more source

Multiparametric robust sensing via readout of characteristic magnetization loops. [PDF]

Sci Rep
Path MP, Vogel M, McCord J.
europepmc   +1 more source