Results 91 to 100 of about 1,379,599 (244)

The Multistep Beveridge-Nelson Decomposition [PDF]

open access: yes
The Beveridge-Nelson decomposition defines the trend component in terms of the eventual forecast function, as the value the series would take if it were on its long-run path. The paper introduces the multistep Beveridge-Nelson decomposition, which arises
Proietti, Tommaso
core  

Regularization of Nonlinear Decomposition of Spectral X-ray Projection Images

open access: yes, 2017
International audiencePurpose: Exploiting the X-ray measurements obtained in different energy bins, spectral computed tomography (CT) has the ability to recover the 3D description of a patient in a material basis.
Sixou, B   +10 more
core   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

Optimal Backward Perturbation Analysis for the Block Skew Circulant Linear Systems with Skew Circulant Blocks

open access: yesAbstract and Applied Analysis, 2014
We first give the block style spectral decomposition of arbitrary block skew circulant matrix with skew circulant blocks. Secondly, we obtain the singular value of block skew circulant matrix with skew circulant blocks as well.
Zhaolin Jiang, Juan Li, Jianwei Zhou
doaj   +1 more source

Spectral decomposition of a class of operators [PDF]

open access: yesPacific Journal of Mathematics, 1964
Made available in DSpace on 2014-12-05T21:50:24Z (GMT). No. of bitstreams: 1 6303334.pdf: 1929515 bytes, checksum: eb74cfa76d6d040ff35bcc7b753bfe1f (MD5) Previous issue date: 1962 ; Embargo set by: Seth Robbins for item 58928 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs ; Restricted to ...
openaire   +2 more sources

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Spectral decomposition of self-adjoint operators in Pontryagin and Krein spaces

open access: yesСовременная математика: Фундаментальные направления
We consider a self-adjoint operator acting in a Krein space and possessing an invariant subspace that is maximal nonnegative and decomposes into a direct sum of a uniformly positive (i.e., equivalent to a Hilbert space with respect to the inner ...
V. A. Strauss
doaj   +1 more source

Phoneme-based Spectral Voice Conversion Using Temporal Decomposition and Gaussian Mixture Model [PDF]

open access: yes, 2008
In state-of-the-art voice conversion systems, GMM-based voice conversion methods are regarded as some of the best systems. However, the quality of converted speech is still far from natural. There are three main reasons for the degradation of the quality
Masato Akagi   +3 more
core   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

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