2,857 research outputs found
gnuradio/volk: Release v2.3.0
No full text[2.3.0] - 2020-05-09
Hi everyone!
VOLK 2.3 is out! We want to thank all contributors. This release wouldn't have been possible without them. We saw lots of great improvements.
On GNU Radio 'master' VOLK was finally removed as a submodule.
Currently we see ongoing discussions on how to improve CPU feature detection because VOLK is not as reliable as we'd like it to be in that department. We'd like to benefit from other open source projects and don't want to reinvent the wheel. Thus, one approach would be to include cpu_features as a submodule.
Highlights
Better reproducible builds
CMake improvements
ORC is removed from the public interface where it was never supposed to be.
CMake fixes for better usability
Updated and new CI chain
TravisCI moved to new distro and does more tests for newer GCC/Clang
Github Actions
Add Action to check proper code formatting.
Add CI that also runs on MacOS with XCode.
Enforce C/C++ coding style via clang-format
Kernel fixes
Add puppet for power_spectral_density kernel
Treat the mod_range puppet as a puppet for correct use with volk_profile
Fix index_max kernels
Fix rotator. We hope that we finally found the root cause of the issue.
Kernel optimizations
Updated log10 calcs to use faster log2 approach
Optimize complexmultiplyconjugate
New kernels
accurate exp kernel is finally merged after years
Add 32f_s32f_add_32f kernel to perform vector + scalar float operation
Contributors
Bernhard M. Wiedemann [email protected]
Clayton Smith [email protected]
Johannes Demel [email protected] [email protected]
Michael Dickens [email protected]
Tom Rondeau [email protected]
Vasil Velichkov [email protected]
ghostop14 [email protected]
Changes
Reproducible builds
Drop compile-time CPU detection
Drop another instance of compile-time CPU detection
CI updates
ci: Add Github CI Action
ci: Remove Ubuntu 16.04 GCC5 test on TravisCI
TravisCI: Update CI to bionic distro
TravisCI: Add GCC 8 test
TravisCI: Structure CI file
TravisCI: Clean-up .travis.yml
Enforce C/C++ coding style
clang-format: Apply clang-format
clang-format: Update PR with GitHub Action
clang-format: Rebase onto current master
Fix compiler warnings
shadow: rebase kernel fixes
shadow: rebase volk_profile fix
CMake
cmake: Remove the ORC from the VOLK public link interface
versioning: Remove .Maint from libvolk version
Fix endif macro name in comment
Kernels
volk: accurate exp kernel
exp: Rename SSE4.1 to SSE2 kernel
Add 32f_s32f_add_32f kernel
This kernel adds in vector + scalar functionality
Fix the broken index max kernels
Treat the mod_range puppet as such
Add puppet for power spectral density kernel
Updated log10 calcs to use faster log2 approach
fix: Use unaligned load
divide: Optimize complexmultiplyconjugat
Author Correction: A prospective observational study of post-COVID-19 chronic fatigue syndrome following the first pandemic wave in Germany and biomarkers associated with symptom severity (Nature Communications, (2022), 13, 1, (5104), 10.1038/s41467-022-3
No full textIn the author list of this article, the names of the authorswere incorrectly listed with initials and family name only. The incorrect author list read as “C. Kedor, H. Freitag, L. Meyer-Arndt, K. Wittke, L. G. Hanitsch, T. Zoller, F. Steinbeis, M. Haffke, G. Rudolf, B. Heidecker, T. Bobbert, J. Spranger, H. D. Volk, C. Skurk, F. Konietschke, F. Paul, U. Behrends, J. Bellmann-Strobl and C. Scheibenbogen”. The author list has now been amended to include the given and family names in the HTML and PDF versions of the article. The corrected author list reads as “Claudia Kedor, Helma Freitag, Lil Meyer-Arndt, Kirsten Wittke, Leif G. Hanitsch, Thomas Zoller, Fridolin Steinbeis, Milan Haffke, Gordon Rudolf, Bettina Heidecker, Thomas Bobbert, Joachim Spranger, Hans- Dieter Volk, Carsten Skurk, Frank Konietschke, Friedemann Paul, Uta Behrends, Judith Bellmann-Strobl and Carmen Scheibenbogen”
Demos/Volk
No full textFlügel-Martinsen O, Martinsen F, Moulin-Doos C. Demos/Volk. In: Comtesse D, Flügel-Martinsen O, Martinsen F, Nonhoff M, eds. Radikale Demokratietheorie. Ein Handbuch. Suhrkamp-Taschenbuch Wissenschaft. Vol 2248. Berlin: Suhrkamp; 2019: 484-491
[c Ii] 158
No full textWe have observed 19 Virgo cluster spiral galaxies with the Long Wavelength Spectrometer (LWS) onboard ESAs Infrared Space Observatory (ISO) obtaining spectra around the [C II] 157.741 ¯m fine structure line. These 19 galaxies are relatively quiescent in star forming activity compared to previous studies from airborne observatories. Fifteen of the nineteen galaxies were detected in the [C II] line. Any influence of the Virgo cluster environment on the [C II] emission was found to be small compared with the strong dependence of the line emission on basic measurables such as morphology. These relatively quiescent galaxies exhibit a smaller range of [CII] to FIR ratios compared to other galaxy surveys, yet there is a good correlation between the strength of the [C II] line and the Far-IR flux, as measured by IRAS. Key words: Galaxies: clusters: general; Galaxies: general; Galaxies: ISM; Infrared: galaxies 1. INTRODUCTION The ISO (Kessler et al. 1996) Guaranteed Time programme VIRGO, Volk e..
Violenza sessuale in famiglia e diritto vivente
No full textL'autore affronta il delicato tema della violenza sessuale in famiglia, soprattutto alla luce di un panorama normativo decisamente inadeguato e delle forti incertezze giurisprudenziali che lo connotano.The author addresses the delicate issue of sexual violence in the family, especially in the light of a an inadequate regulatory landscape and the strong jurisprudential uncertainties that connote it
Joint investigation of settling and preferential concentration of inertial particles in turbulence
No full textParticle laden flows are of a great interest in many industrial and natural systems. When the carrier flow is turbulent, a striking feature named preferential concentration takes place: particles denser than the carrier fluid tend to inhomogeneously distribute in space, forming clusters and depleted regions. The present study aims at giving new insight into the possible connection between preferential concentration and particles settling in homogeneous isotropic turbulence. Preferential concentration is quantified using Voronoi diagrams, while 3D Lagrangian Particle Tracking is used to access particles dynamics and in particular statistics of settling velocity. Independent and joint statistics of local concentration and settling velocity will be discussed. Besides, the dependence of particles settling rates on clustering and turbulence levels is further investigated with the use of Laser Phase Doppler Interferometry
Dynamic of large particles embedded in shear flows
No full textLarge particles () immersed in a closed turbulent flow tend to explore in a non-uniformly way the cavity in which they are placed. Here we study the slow dynamics of large particles (with various size) advected in closed turbulent flows at different Reynolds numbers. We investigate the spatial sampling experienced by large particles in two fully turbulent closed flows generated between counter-rotating disks (so called von Karman flow), focusing in the slow frequency's (, where is the rotation rate of the driving impellers) and characterize the power spectrum of the slow fluctuations of particles position. Both considered flows share a common feature : the presence of a shear region dividing two mean re-circulation regions ; however the spatial symmetries and the temporal behaviors of both setups are very different. The principal result in this research is that despite these differences both flows exhibit a well defined slow dynamical behavior that can be identified in Fourier space. We report on the universal characteristics of such slow motion
Transcription factor NF-kB is activated in primary neurons by amyloid ß peptides and in neurons surrounding early plaques from patients with Alzheimer disease
No full textKaltschmidt B, Uherek M, Volk B, Baeuerle PA, Kaltschmidt C. Transcription factor NF-kB is activated in primary neurons by amyloid ß peptides and in neurons surrounding early plaques from patients with Alzheimer disease. Proc. Natl. Acad. Sci. USA. 1997;94(6):2642-2647
Fabrication of synthetic calcite-muscovite rocks with variable texture - An analogue to cataclasite fabrics?
No full textA series of large diameter calcite-muscovite aggregates has been prepared from calcite and muscovite powders, in order to gain a better understanding of how texture develops in impure carbonate rocks. The development of the microstructure and the crystallographic preferred orientation (CPO, texture) during the preparation process is described. The synthetic rocks have been fabricated from powders of calcite and muscovite by uniaxial cold-pressing at loads up to 400 MPa and subsequent hot isostatic pressing (HIPping) at pressures of 150 to 170 MPa and a temperature of 670 degrees C. The resulting textures and microstructures are homogeneous throughout the samples. The calcite CPO is generated by rigid body rotation and twinning during cold-pressing and is not significantly altered by recrystallization during HIPping. Grain growth during HIPping is observed in pure calcite samples, but is inhibited through high porosity and the presence of muscovite in the mixed aggregates. The preferred orientation of the calcite c-axes is found to increase with increasing uniaxial cold pressure, and to be independent of the muscovite content. The magnetic bulk susceptibility of the starting material has been changed by the formation of ferromagnetic impurities during fabrication. Comparison of the samples to natural calcite fabrics from fault zones show the potential of the experiments and fabric analyses presented to analyze and to better understand the deformation mechanisms of fault zones. (C) 2007 Elsevier B.V. All rights reserved
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