Results 41 to 50 of about 2,019,254 (295)

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

Advanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami, Hengzhe Ren, Erqian Dong, Ashkan Ghanbarzadeh‐Dagheyan, Chen Shen   +4 more
wiley   +1 more source

OPTIMIZING TERRESTRIAL LASER SCANNING MEASUREMENT SET-UP [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
One of the main applications of the terrestrial laser scanner is the visualization, modeling and monitoring of man-made structures like buildings. Especially surveying applications require on one hand a quickly obtainable, high resolution point cloud but
S. Soudarissanane, R. Lindenbergh
doaj   +1 more source

Two cryptomorphic formalizations of projective incidence geometry [PDF]

Annals of Mathematics and Artificial Intelligence, 2018
The authors formalize two different projective geometry axiomatic systems in Coq, describing the first in classical terms and the second in terms of rank from matroid theory. They prove the equivalence of these two systems in two and three dimensions. The significance of this result is that it allows for further automation for the proofs of projective ...
David Braun, Nicolas Magaud, Pascal Schreck   +2 more
openaire   +3 more sources

Frobenius manifolds, projective special geometry and Hitchin systems [PDF]

, 2010
We consider the construction of Frobenius manifolds associated to projective special geometry and analyse the dependence on choices involved. In particular, we prove that the underlying F-manifold is canonical.
Hoevenaars, L.K., Posthuma, Hessel, Claus Hertling, Hoevenaars, L., Hoevenaars, Luuk, Sub Algebra,Geometry&Mathem. Logic begr., Algebra & Geometry and Mathematical Locic, Hertling, Claus, Posthuma, H., Posthuma, H.B., Luuk Hoevenaars, Hessel Posthuma, Hertling, C.   +12 more
core   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Coherent Magnetization Rotation of a Layered System Observed by Polarized Neutron Scattering under Grazing Incidence Geometry

Crystals, 2019
The in-plane magnetic structure of a layered system composed of polycrystalline grains smaller than the ferromagnetic exchange length was studied to elucidate the mechanism controlling the magnetic properties considerably different from the bulk using ...
Ryuji Maruyama, Thierry Bigault, Thomas Saerbeck, Dirk Honecker, Kazuhiko Soyama, Pierre Courtois   +5 more
doaj   +1 more source

The Terwilliger Algebra of the Incidence Graphs of Johnson Geometry [PDF]

The Electronic Journal of Combinatorics, 2013
In 2007, Levstein and Maldonado  computed the Terwilliger algebra of the Johnson graph $J(n,m)$ when $3m\leq n$. It is well known that the halved graphs of the incidence graph $J(n,m,m+1)$ of Johnson geometry are Johnson graphs. In this paper, we determine the Terwilliger algebra of $J(n,m,m+1)$ when $3m\leq n$, give two bases of this algebra, and ...
Qian Kong, Benjian Lv, Kaishun Wang
openaire   +4 more sources

FastNano Liquid: An Automated Platform for Small‐Angle X‐ray Scattering‐Based Materials Discovery

Advanced Engineering Materials, EarlyView.
We present FastNano Liquid, an automated small‐ and wide‐angle X‐ray scattering platform for the combined synthesis and characterization of (nano)materials. The platform is coupled to varied reactor workflows for both in situ studies of reaction kinetics and ex situ screening of synthesis conditions to support machine learning‐guided exploration ...
Pierre‐Baptiste Flandrin, Émeline Cournède, Jens Krarup, Michael Lesa, Foyzul Hasan, Amandine Séné, Arnaud Lahouati, David Benhaiem, Jérémie‐Luc Sanchez, Simon Delacroix, Thierry Gacoin, Fabienne Testard, Damien Faivre, David Carriere, Corinne Chevallard, Olivier Taché, Mark A. Levenstein   +16 more
wiley   +1 more source

Spatiotemporal Optimization of Observation Geometry for Wave-Induced Bias in the Kuroshio Region Using the KaDOP Model and Five Years of Hourly ERA5 Reanalysis Data

Remote Sensing
Ocean surface currents (OSCs) are central to upper ocean dynamics and air–sea exchange, yet their retrieval from spaceborne synthetic aperture radar (SAR) is limited by wave-induced bias (WB).
Saichao Cao, Yongsheng Xu, Hanwei Sun, Weiya Kong   +3 more
doaj   +1 more source

Resolving Three-Dimensional Surface Motion with InSAR: Constraints from Multi-Geometry Data Fusion

Remote Sensing, 2019
Interferometric synthetic aperture radar (InSAR) technology has been widely applied to measure Earth surface motions related to natural and anthropogenic crustal deformation phenomena.
Thomas Fuhrmann, Matthew C. Garthwaite
doaj   +1 more source