Results 1 to 10 of about 2,283 (190)

Refining perovskite structures to pair distribution function data using collective Glazer modes as a basis [PDF]

open access: yesIUCrJ, 2022
Structural modelling of octahedral tilts in perovskites is typically carried out using the symmetry constraints of the resulting space group. In most cases, this introduces more degrees of freedom than those strictly necessary to describe only the ...
Sandra Helen Skjærvø   +3 more
doaj   +2 more sources

Effect of Refining on Asphaltene Property Distributions

open access: green, 2014
Asphaltenes are a solubility class and are defined as the part of a crude oil that is soluble in toluene and insoluble in n-heptane. Asphaltene precipitation, and subsequent fouling, is a potential issue in refining when feedstock and/or process streams are blended. While asphaltene precipitation from native crude oils can be predicted from a small set
Hassan Sadeghi Yamchi
openaire   +4 more sources

Distributed Coalgebraic Partition Refinement

open access: yes, 2022
AbstractPartition refinement is a method for minimizing automata and transition systems of various types. Recently we have developed a partition refinement algorithm and the tool that is generic in the transition type of the input system and matches the theoretical run time of the best known algorithms for many concrete system types.
Fabian Birkmann   +2 more
openaire   +2 more sources

Distributed semi-stochastic optimization with quantization refinement [PDF]

open access: yes2016 American Control Conference (ACC), 2016
We consider the problem of regularized regression in a network of communication-constrained devices. Each node has local data and objectives, and the goal is for the nodes to optimize a global objective. We develop a distributed optimization algorithm that is based on recent work on semi-stochastic proximal gradient methods.
McGlohon, Neil, Patterson, Stacy
openaire   +2 more sources

On Multistage Successive Refinement for Wyner-Ziv Source Coding with Degraded Side Informations [PDF]

open access: yes, 2006
We provide a complete characterization of the rate-distortion region for the multistage successive refinement of the Wyner-Ziv source coding problem with degraded side informations at the decoder.
Diggavi, Suhas, Tian, Chao
core   +5 more sources

A multiscale collocation method for fractional differential problems [PDF]

open access: yes, 2018
We introduce a multiscale collocation method to numerically solve differential problems involving both ordinary and fractional derivatives of high order.
Pezza, L., Pitolli, F.
core   +1 more source

Existence of multiple refinable distributions. [PDF]

open access: yesMichigan Mathematical Journal, 1997
The matrix refinement equation \[ \varphi= \sum_{\alpha\in \mathbb{Z}^s} a(\alpha)\varphi(2\cdot-\alpha)\tag{1} \] in which \(a(\alpha)\) is a sequence of \(r\times r\) complex matrices and \(\varphi= (\varphi_1,\dots,\varphi_r)^T\) is a vector of distributions on \(\mathbb{R}^s\), is studied. One of the main results reads as follows. Theorem.
openaire   +3 more sources

Distributed Successive Approximation Coding using Broadcast Advantage: The Two-Encoder Case [PDF]

open access: yes, 2010
Traditional distributed source coding rarely considers the possible link between separate encoders. However, the broadcast nature of wireless communication in sensor networks provides a free gossip mechanism which can be used to simplify encoding ...
Barrenetxea, Guillermo   +2 more
core   +3 more sources

Distribution Based Stemmer Refinement [PDF]

open access: yes, 2005
Stemming is a common preprocessing task applied to text corpora. Errors in this process may be refined either manually or based on a corpus. We describe a novel corpus-based stemming technique which models the given words as being generated from a multinomial distribution over the topics available in the corpus.
B. L. Narayan, Sankar K. Pal
openaire   +1 more source

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