Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Christof Puhle"'
Publikováno v:
INTER-NOISE and NOISE-CON Congress and Conference Proceedings. 265:4967-4974
In this paper potential benefits and functionality of a vibroacoustic camera are investigated by combining results of a common beamforming and nearfield holography acoustic camera using the software NoiseImage and a highspeed camera, allowing to visu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bb0fa7b68d8d4a89adb8a7e2641d66f
https://doi.org/10.3397/in_2022_0719
https://doi.org/10.3397/in_2022_0719
Autor:
Christof Puhle
Publikováno v:
INTER-NOISE and NOISE-CON Congress and Conference Proceedings. 263:4450-4458
In this paper, we discuss a unification of several well-known frequency domain beamforming methods into one working principle. The methods under consideration include Functional Beamforming, Asymptotic Beamforming, Adaptive Beamforming and - as a nat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::001bbc4ed866b668d558d7690aaa366e
https://doi.org/10.3397/in-2021-2709
https://doi.org/10.3397/in-2021-2709
Publikováno v:
E3S Web of Conferences, Vol 111, p 02076 (2019)
An Acoustic Camera was applied to examine modifications of fan blade designs regarding their noise emissions. A so-called rotational beamforming algorithm allows for the detection of sound sources on the rotating blades by using a virtual rotation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43d5b38db766dd35e3acd56ef6c33e88
https://doi.org/10.1051/e3sconf/201911102076
https://doi.org/10.1051/e3sconf/201911102076
Autor:
Christof Puhle
Publikováno v:
Journal of Geometry and Physics. 58:1355-1375
Let (M^n,g) be a Riemannian spin manifold. The basic equations in supergravity models of type IIa string theory with 4-form flux involve a 3-form T, a 4-form F, a spinorial covariant derivative \nabla depending on \nabla^g, T, F, and a \nabla-paralle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06714d889eb2a73719c6e8812b51495d
https://doi.org/10.1016/j.geomphys.2008.05.010
https://doi.org/10.1016/j.geomphys.2008.05.010
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 40:15143-15147
In [3] the authors studied the 4-parameter family of isospectral flat 4-tori T^\pm(a,b,c,d) discovered by Conway and Sloane. With a particular method of counting nodal domains they were able to distinguish these tori (numerically) by computing the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e37eaddbbab74104b4a557eb28252e6
https://doi.org/10.1088/1751-8113/40/50/n01
https://doi.org/10.1088/1751-8113/40/50/n01
Publikováno v:
Classical and Quantum Gravity. 22:2569-2577
Let ∇ be a metric connection with totally skew-symmetric torsion T on a Riemannian manifold. Given a spinor field Ψ and a dilaton function Φ, the basic equations in the common sector of type II string theory are for some auxiliary parameters a, b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04329b221e6fe38229b2f4cfa255eaa2
https://doi.org/10.1088/0264-9381/22/13/003
https://doi.org/10.1088/0264-9381/22/13/003
Publikováno v:
Physica B: Condensed Matter. :623-626
The Humboldt High Magnetic Field Center has moved to a new campus with improved conditions. The three basic kinds of magnetic field generators are DC-superconducting solenoids up to 20 T, nondestructive coils for pulsed fields up to 60 T, and semides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17d64e5d9ba7fcfb225117235264d1d0
https://doi.org/10.1016/j.physb.2004.01.070
https://doi.org/10.1016/j.physb.2004.01.070
Autor:
Christof Puhle
We study 5-dimensional Riemannian manifolds that admit an almost contact metric structure. In particular, we generalize the class of quasi-Sasaki manifolds and characterize these structures by their intrinsic torsion. Among other things, we see that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13169c666cd65623a67bf0cc1f845909
Autor:
Christof Puhle
We study 8-dimensional Riemannian manifolds that admit a PSU(3)-structure. We classify these structures by their intrinsic torsion and characterize the corresponding classes via differential equations. Moreover, we consider a connection defined by a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90ab78456c0554ec46ca8b40ed83c456
http://arxiv.org/abs/1007.1205
http://arxiv.org/abs/1007.1205
Autor:
Christof Puhle
Any Spin(7)-manifold admits a metric connection \nabla^c with totally skew-symmetric torsion T^c preserving the underlying structure. We classify those with \nabla^c-parallel T^c\neq0 and non-Abelian isotropy algebra iso(T^c)
Comment: 16 pages,
Comment: 16 pages,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c71452e179fdc17f86dc658a14d1645a