نتایج جستجو برای: composite channel

تعداد نتایج: 344188  

2008
C. Wetterich

The functional integral for QCD is reformulated by introducing explicitly an integration over the fluctuations of composite quark-antiquark bound states. Chiral symmetry breaking by the color singlet scalar field induces masses for the fermions. Our formulation with scalar fluctuations may be useful for lattice gauge theories by modifying the spectrum of the Dirac operator in the vacuum and per...

2010
Wataru Takeuchi

In order to compute cloud coverage statistics over Asian region, an operational scheme for masking cloud-contaminated pixels in Advanced Very High Resolution Radiometer (AVHRR) daytime data was developed, evaluated and presented. Dynamic threshold was used with channel 1, 2 and 3 to automatically create a cloud mask for a single image. Then the 10-day cloud coverage imagery was generated over t...

Journal: :Micron 2010
Sumit Kumar Anshu Sharma Balram Tripathi Subodh Srivastava Shweta Agrawal M Singh Kamlendra Awasthi Y K Vijay

The multi-walled carbon nanotube (MWCNT) dispersed polymethylmethacrylate (PMMA) composite membranes have been prepared for hydrogen gas permeation application. Composite membranes are characterized by Raman spectroscopy, optical microscopy, X-ray diffraction, electrical measurements and gas permeability measurements. The effect of electric field alignment of MWCNT in PMMA matrix on gas permeat...

2017
Jinzhao Huang Ke Fu Xiaolong Deng Nannan Yao Mingzhi Wei

TiO2 NSAs/graphene/Cu2O was fabricated on the carbon fiber to use as photocastalysts by coating Cu2O on the graphene (G) decorated TiO2 nanosheet arrays (NSAs). The research focus on constructing the composite structure and investigating the reason to enhance the photocatalytic ability. The morphological, structural, and photocatalytic properties of the as-synthesized products were characterize...

2018
Shaoxiong Zhang Ming Li Hongxia Wang Weili Cheng Weiwei Lei Yiming Liu Wei Liang

Mg-9Al-1Si-1SiC composites with various initial microstructures prior to equal channel angular pressing (ECAP) were obtained by different pre-treatments (without and with homogenization treatment), and the resultant grain size, second phase and tensile properties of ECAPed composites were reported. The ECAPed composite with homogenization treatment (HT) exhibited finer grain size, higher fracti...

Journal: :IEEE Trans. Signal Processing 2003
Samson Lasaulce Philippe Loubaton Eric Moulines

This paper aims at studying a semi-blind channel estimation scheme based on the subspace method or a carefully weighted linear prediction approach. The corresponding (composite) semi-blind cost functions result from a linear combination of the training-based cost function and a blind cost function. For each blind method, we show how to calculate the asymptotic estimation error. Therefore, by mi...

Journal: :CoRR 2018
Bo Zhang Wei Liu Xiang Lan

Directional modulation (DM) is a physical layer security technique based on antenna arrays and so far the polarisation information has not been considered in its designs. To increase the channel capacity, we consider exploiting the polarisation information and send two different signals simultaneously at the same direction, same frequency, but with different polarisations. These two signals can...

Journal: :Physical review 2021

The Higgs boson may well be a composite scalar with finite extension in space. Owing to the momentum dependence of its couplings, imprints such pseudo Goldstone show up tails various kinematic distributions at LHC, distinguishing it from an elementary state. From bottom up, we construct momentum-dependent form factors capture interactions weak gauge bosons. We demonstrate their impact different...

Journal: :Nuclear Physics B 2023

The ultraviolet completion is the Standard Model (SM) gauge-symmetric four-fermion couplings at high-energy cutoff. Composite particles appear in gauge symmetric phase contrast with SM spontaneous symmetry-breaking phase. critical point between two phases a weak first-order transition. It relates to an fixed for theory of composite strong coupling regime. low-energy realizes infrared bosons dis...

2008
S. Roth W. Westphal

Weakly Interacting Massive Particles (WIMPs) are candidates for non-baryonic Dark Matter. WIMPs are supposed to interact with baryonic matter via scattering off nuclei producing a nuclear recoil with energies up to a few 10 keV with a very low interaction rate of ∼10−6 events per kg of target material and day in the energy region of interest. The Dark Matter experiment CRESST (Cryogenic Rare Ev...

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