Results 61 to 70 of about 554,533 (301)
Spatial spectrum and energy efficiency of random cellular networks [PDF]
, 2015 It is a great challenge to evaluate the network performance of cellular mobile communication systems. In this paper, we propose new spatial spectrum and energy efficiency models for Poisson-Voronoi tessellation (PVT) random cellular networks. To evaluate
Ge, X +11 more
core +1 more source
Soil moisture inversion of oasis saline soil based on early-time signals of multi-frequency GPR
地球与行星物理论评Oasis agriculture in arid regions persistently faces dual challenges of water scarcity and secondary soil salinization, making accurate acquisition of spatiotemporal soil moisture distribution characteristics critical for sustaining agricultural ...
Tianbao Huang +7 more
doaj +1 more source
Imaging in Random Media with Convex Optimization [PDF]
SIAM Journal on Imaging Sciences, 2017 We study an inverse problem for the wave equation where localized wave sources in random scattering media are to be determined from time resolved measurements of the waves at an array of receivers. The sources are far from the array, so the measurements are affected by cumulative scattering in the medium, but they are not further than a transport mean ...
Liliana Borcea, Ilker Kocyigit
openaire +3 more sources
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source
Random fractional Fourier transform : stochastic perturbations along the axis of propagation
, 1999 The fractional Fourier transform (FRT) is known to be optically implementable with use of a medium with a perfect radial quadratic-index profile. Using the quantum-mechanical operator formalism, we examine the effects on the FRT action of such a medium
Abe, Sumiyoshi, Sheridan, John T.
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Current Relaxation in Nonlinear Random Media [PDF]
Physical Review Letters, 2004 We study the current relaxation of a wave packet in a nonlinear random sample coupled to the continuum and show that the survival probability decays as $P(t) \sim 1/t^α$. For intermediate times $tχ_{\rm cr}$ we find a universal decay with $α=2/3$ which is a signature of the {\it nonlinearity-induced delocalization}.
Kottos, T., Weiss, M.
openaire +4 more sources
The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers
Molecular Oncology, EarlyView.The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce +11 more
wiley +1 more source
Molecular Oncology, EarlyView.Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau +36 more
wiley +1 more source
Stochastic Modelling of Coherent Phenomena in Strongly Inhomogeneous Media.
, 2005 A procedure of numerical simulation for coherent phenomena in multiply scattering media is developed on the basis of the juxtaposition of a Monte Carlo stochastic method with an iterative approach to the solution of the Bethe- Salpeter equation.
Meglinski, I. V. +2 more
core +1 more source
New Journal of Physics, 2018 Keller’s theorem relates the components of the macroscopic dielectric response of a binary two-dimensional composite system with those of the reciprocal system obtained by interchanging its components.
Guillermo P Ortiz, W Luis Mochán
doaj +1 more source