Results 21 to 30 of about 2,779,394 (268)
Velocity estimation of rock-fall in multi-channel SAR system with low PRF sampling
Geomatics, Natural Hazards & Risk, 2020 Rockfalls influence the safety of the surrounding infrastructure and the normal operation of transportation lines. The application of synthetic aperture radar (SAR) technology is a new method of rock-fall monitoring and disaster prediction.
Lili Hou, Qian Zhang
doaj +1 more source
Fatigue Reliability Assessment for Orthotropic Steel Bridge Decks Considering Load Sequence Effects
Frontiers in Materials, 2021 Fatigue damage accumulations would dramatically reduce the reliability and service life of the orthotropic steel decks. Incorrect fatigue assessment results may be obtained when load sequence effects are omitted. In the present study, fatigue reliability
Jun-Hong Xu +3 more
doaj +1 more source
Evolution Patterns of Frost-Heaving Pressure with Partial Ponding in Cold Region Tunnels
Geofluids, 2022 The calculation of the frost-heaving pressure is one of the key issues in the frost-resistant design of tunnels in cold regions. To reveal the frost heave mechanism of partial ponding behind the tunnel linings, a three-dimensional geo-mechanical model ...
Xinyu Zheng +4 more
doaj +1 more source
Relationship between Aeolian tone and Wake Vortex from Inclined Flat Blade
Journal of Fluid Science and Technology, 2009 The three dimensional structure of the wake vortex was investigated in relating to the aeolian tone from the inclined blade. It was pointed out that the aeolian tone is largest not at zero, but at ten degree of the inclined angle.
Sho YOSHITAKE +3 more
doaj +1 more source
Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete
Advances in Materials Science and Engineering, 2022 Crumb Rubber Concrete (CRC) can exhibit high freeze-thaw resistance, but its long-term creep behavior under various freeze-thaw conditions remains unclear, which is essential for the safety of pavement engineering in the severe cold zone.
Qi Li +4 more
doaj +1 more source
Journal of Advanced Joining Processes, 2022 The article is about press-bolts which are installed by cold forming in sheet metal constructions. Those fasteners belong to functional elements available in form of press-nuts as well as press-bolts. This paper is focused on press-bolt joints, which are
Christian Denkert +7 more
doaj +1 more source
Kurtosis and large-scale structure
The Astrophysical Journal, 1994 We discuss the non--linear growth of the excess kurtosis parameter of the smoothed density fluctuation field $δ$, $S_4\equiv[\lanδ^{\,4}\ran-3\lanδ^{\,2}\ran^2]/ \lanδ^{\,2}\ran^3$ in an Einstein--de Sitter universe. We assume Gaussian primordial density fluctuations with scale--free power spectrum $P(k)\propto k^{\,n}$ and analyze the dependence of ...
Catelan, Paolo, Moscardini, Lauro
openaire +2 more sources
Asymptotic expansions for Large Scale Structure [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 27 pages, 12 ...
Chen S. -F., Pietroni M.
openaire +4 more sources
A Numerical Gear Rolling Test Method for Face-Hobbed Hypoid Gears
Applied Sciences, 2023 A numerical gear rolling test (NGRT) method for actual tooth surfaces was proposed. The non-uniform rational B-spline (NURBS) fitting method was adapted to reconstruct the actual tooth surface, and the instant meshing point as well as the transmission ...
Jinfu Du +3 more
doaj +1 more source
New Astronomy Reviews, 2001 LaTex (sty files added), 24 pages, 8 PostScript figures embedded, in ``Understanding the Universe at the close of XXth Century'', ed. M. Signore, Elseview (in press)
openaire +2 more sources