Results 31 to 40 of about 23,814,243 (249)

Effect of Slot Opening Width on the Air-Gap Magnetic Field of a Direct Drive Permanent Magnet Motor

open access: yesApplied Sciences, 2019
The direct drive permanent magnet motor (DDPMM) is a promising candidate for applications because of its high efficiency, high power density, and low maintenance costs.
Yaofei Han   +5 more
doaj   +1 more source

From 3D Scans to Networks: Using Swords to Understand Communities of Central European Bronze Age Smiths

open access: yesOpen Archaeology, 2018
This case study uses 3D scans of Central European Bronze Age swords (~1400-800BC) to recreate community networks of knowledge. 3D scans of 111 bronze swords were analyzed, from which measurements including blade profile, hilt profile, and decorative ...
Golubiewski-Davis Kristina
doaj   +1 more source

Experimental forecast of thermal conditions in the South Kuril region in summer by modified Fourier method

open access: yesИзвестия ТИНРО, 2021
Time series of air temperature and sea surface temperature in South Kuril region in July and August are extrapolated to 2020–2024 using modified method of Fourier decomposition. Both cyclic harmonic components and linear trend are accounted.
T. A. Shatilina   +2 more
doaj   +1 more source

On the Large-x Asymptotic of the Classical Solutions to the Non-Linear Benjamin Equation in Fractional Sobolev Spaces

open access: yesFractal and Fractional
In this work, we study the large-x asymptotic of classical solutions to the non-linear Benjamin equation modeling propagation of small amplitude internal waves in a two fluid system.
Nabendra Parumasur, Olabisi Aluko
doaj   +1 more source

Fast DBF for conformal arrays based on 2D Fourier decomposition

open access: yesThe Journal of Engineering, 2019
Digital array radars with conformal arrays are attractive for platforms with limited installation space such as aircraft and unmanned aerial vehicles.
Yuan Yao, Guangxin Wu
doaj   +1 more source

Current measurements in the intermittent-contact mode of atomic force microscopy using the Fourier method: a feasibility analysis

open access: yesBeilstein Journal of Nanotechnology, 2020
Atomic force microscopy (AFM) is an important tool for measuring a variety of nanoscale surface properties, such as topography, viscoelasticity, electrical potential and conductivity.
Berkin Uluutku, Santiago D. Solares
doaj   +1 more source

Error Estimates for Approximating the Fourier Transform of Functions of Bounded Variation [PDF]

open access: yes, 2004
In this paper we point out an approximation for the Fourier transform for functions of bounded variation and study the approximation error of certain associated quadrature ...
Hanna, George T   +2 more
core   +3 more sources

Forward/Backward Decomposition for Dispersive Wave Propagation Measurements

open access: yesApplied Sciences
Two complicating features commonly found in wave propagation applications include dispersion, i.e., frequency-dependent propagation velocity, and reflections, which introduce coherent noise.
Nicholas A. Corbin, Pablo Tarazaga
doaj   +1 more source

Guessing with a Bit of Help

open access: yesEntropy, 2019
What is the value of just a few bits to a guesser? We study this problem in a setup where Alice wishes to guess an independent and identically distributed (i.i.d.) random vector and can procure a fixed number of k information bits from Bob, who has ...
Nir Weinberger, Ofer Shayevitz
doaj   +1 more source

Elliptic Fourier Analysis

open access: yes, 2021
Examples of polar Fourier analysis and elliptic Fourier ...
Koji Noshita (3807445)
core   +1 more source

Home - About - Disclaimer - Privacy