Results 21 to 30 of about 251,238 (344)
A pilot study on the influence of mouth configuration and torso on singing voice directivity.
Journal of the Acoustical Society of America, 2020 Directivity of speech and singing is determined primarily by the morphology of a person, i.e., head size, torso dimensions, posture, and vocal tract.
Manuel Brandner +3 more
semanticscholar +1 more source
Hard X-ray spectra and positions of solar flares observed by RHESSI: photospheric albedo, directivity and electron spectra [PDF]
, 2007 <p><b>Aims</b>: We investigate the signature of the photospheric albedo contribution in solar flare hard X-ray spectra, the effect of low energy cutoffs in electron spectra, and the directivity of hard X-ray emission.</p> <p&
Brown, J.C. +2 more
core +2 more sources
Journal of Geophysical Research: Solid Earth, 2016 Jonas Folesky, Serge A Shapiro
exaly +2 more sources
Changing Direction on Direction of Fit [PDF]
Ethical Theory and Moral Practice, 2012 In this paper, I show that we should understand the direction of fit of beliefs and desires in normative terms. After rehearsing a standard objection to Michael Smith’s analysis of direction of fit, I raise a similar problem for Lloyd Humberstone’s analysis.
openaire +2 more sources
Proceedings of the Twenty-Ninth International Joint Conference on Artificial Intelligence, 2020 We propose a logic of directions for points (LD) over 2D Euclidean space, which formalises primary direction relations east (E), west (W), and indeterminate east/west (Iew), north (N), south (S) and indeterminate north/south (Ins). We provide a sound and complete axiomatisation of it, and prove that its satisfiability problem is NP-complete.
Heshan Du +2 more
openaire +3 more sources
Directed triangles in directed graphs
Discrete Mathematics, 1992 The authors show that if each vertex of an oriented graph \(G_ n\) has indegree and outdegree at least \(n/t\), where \(t=2.867\dots,\) then \(G_ n\) contains an oriented 3-cycle.
Maurits de Graaf +2 more
openaire +2 more sources
Chemical Mechanical Planarization and Old Italian Violins
Micromachines, 2018 Previous studies have shown that spectral analysis based on force data can elucidate fundamental physical phenomena during chemical mechanical planarization (CMP). While it has not been literally described elsewhere, such analysis was partly motivated by
Ara Philipossian +2 more
doaj +1 more source
On Methods to Determine Bounds on the $Q$ -Factor for a Given Directivity [PDF]
IEEE Transactions on Antennas and Propagation, 2017 This paper revisit and extend the interesting case of bounds on the $Q$ -factor for a given directivity for a small antenna of arbitrary shape. A higher directivity in a small antenna is closely connected with a narrow impedance bandwidth.
B. Jonsson +4 more
semanticscholar +1 more source
Every Direction a Julia Direction [PDF]
Proceedings of the American Mathematical Society, 1974 Let f ( z ) = exp ( cosh z ) f(z) = \exp (\cosh z) . If N N is any ϵ \epsilon -neighborhood of any ray through the origin with slope m ≠ 0 , ∞ m \ne 0,\infty then
openaire +2 more sources
Nature Inspired MIMO Antenna System for Future mmWave Technologies
Micromachines, 2020 In this work, a new Multiple Input Multiple Output (MIMO) antenna system with a novel shape inspired by nature is proposed for Fifth-Generation (5G) communication systems. The antenna is designed on a Rogers 5880. The dielectric constant of the substrate
Saifur Rahman +8 more
doaj +1 more source