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389 papers · 1 filter
Robust Preconditioners for DG-Discretizations with Arbitrary Polynomial Degrees
Kolja Brix, Claudio Canuto, Wolfgang Dahmen
Discontinuous Galerkin (DG) methods offer an enormous flexibility regarding local grid refinement and variation of polynomial degrees for a variety of different problem classes. Wi…
Scanning tunneling microscopy with InAs nanowire tips
Kilian Flöhr, Kamil Sladek, H. Yusuf Günel +5
Indium arsenide nanowires grown by selective-area vapor phase epitaxy are used as tips for scanning tunneling microscopy (STM). The STM tips are realized by positioning the wires m…
Dual-Polarized Ricean MIMO Channels: Modeling and Performance Assessment
Adrian Ispas, Xitao Gong, Christian Schneider +2
In wireless communication systems, dual-polarized (DP) instead of single-polarized (SP) multiple-input multiple-output (MIMO) transmission is used to improve the spectral efficienc…
Homomorphic Payment Addresses and the Pay-to-Contract Protocol
Ilja Gerhardt, Timo Hanke
We propose an electronic payment protocol for typical customer-merchant relations which does not require a trusted (signed) payment descriptor to be sent from the merchant to the c…
Constraints on the origin of cosmic rays above eV from large scale anisotropy searches in data of the Pierre Auger Observatory
Pierre Auger Collaboration
A thorough search for large scale anisotropies in the distribution of arrival directions of cosmic rays detected above eV at the Pierre Auger Observatory is reported. For…
On "dynamical mass" generation in Euclidean de Sitter space
M. Beneke, P. Moch
We consider the perturbative treatment of the minimally coupled, massless, self-interacting scalar field in Euclidean de Sitter space. Generalizing work of Rajaraman, we obtain the…