Partial spread OFDM

2012 ◽  
Author(s):  
Ali Elghariani ◽  
Michael D. Zoltowski
Keyword(s):  
Partial Spread

Counting Partial Spread Functions in Eight Variables

2011 ◽  
Vol 57 (4) ◽  
pp. 2263-2269 ◽  
Author(s):  
Philippe Langevin ◽  
Xiang-Dong Hou
Keyword(s):  
Partial Spread

Maximal Strictly Partial Spreads

1978 ◽  
Vol 30 (03) ◽  
pp. 483-489 ◽  
Author(s):  
Gary L. Ebert
Keyword(s):  
Projective Space ◽  
Partial Spread ◽  
3 Dimensional ◽  
Partial Spreads ◽  
Maximal Partial Spread ◽  
Dimensional Projective Space

Let ∑ = PG(3, q) denote 3-dimensional projective space over GF(q). A partial spread of ∑ is a collection W of pairwise skew lines in ∑. W is said to be maximal if it is not properly contained in any other partial spread. If every point of ∑ is contained in some line of W, then W is called a spread. Since every spread of PG(3, q) consists of q2 + 1 lines, the deficiency of a partial spread W is defined to be the number d = q2 + 1 — |W|. A maximal partial spread of ∑ which is not a spread is called a maximal strictly partial spread (msp spread) of ∑.

scholarly journals Partial spread and vectorial generalized bent functions

2016 ◽  
Vol 85 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Thor Martinsen ◽  
Wilfried Meidl ◽  
Pantelimon Stănică
Keyword(s):  
Bent Functions ◽  
Partial Spread ◽  
Generalized Bent Functions

scholarly journals The maximum size of a partial spread in H(5,q2) is q3+1

2007 ◽  
Vol 114 (4) ◽  
pp. 761-768 ◽  
Author(s):  
J. De Beule ◽  
K. Metsch
Keyword(s):  
Maximum Size ◽  
Partial Spread

scholarly journals Divergent Whole Brain Projections from the Ventral Midbrain in Macaques

2021 ◽  
Author(s):  
Muhammad Zubair ◽  
Sjoerd R Murris ◽  
Kaoru Isa ◽  
Hirotaka Onoe ◽  
Yoshinori Koshimizu ◽  
...  
Keyword(s):  
Dopaminergic Neurons ◽  
Fluorescent Proteins ◽  
Molecular Layer ◽  
Partial Spread ◽  
Double Labeling ◽  
Ventral Midbrain ◽  
Midbrain Neurons ◽  
Highly Sensitive ◽  
Layer I ◽  
The Brain

ABSTRACT To understand the connectome of the axonal arborizations of dopaminergic midbrain neurons, we investigated the anterograde spread of highly sensitive viral tracers injected into the ventral tegmental area (VTA) and adjacent areas in 3 macaques. In 2 monkeys, injections were centered on the lateral VTA with some spread into the substantia nigra, while in one animal the injection targeted the medial VTA with partial spread into the ventro-medial thalamus. Double-labeling with antibodies against transduced fluorescent proteins (FPs) and tyrosine hydroxylase indicated that substantial portions of transduced midbrain neurons were dopaminergic. Interestingly, cortical terminals were found either homogeneously in molecular layer I, or more heterogeneously, sometimes forming patches, in the deeper laminae II–VI. In the animals with injections in lateral VTA, terminals were most dense in somatomotor cortex and the striatum. In contrast, when the medial VTA was transduced, dense terminals were found in dorsal prefrontal and temporal cortices, while projections to striatum were sparse. In all monkeys, orbitofrontal and occipito-parietal cortex received strong and weak innervation, respectively. Thus, the dopaminergic ventral midbrain sends heterogeneous projections throughout the brain. Furthermore, our results suggest the existence of subgroups in meso-dopaminergic neurons depending on their location in the primate ventral midbrain.

scholarly journals The Maximum Size of a Partial Spread in $H(4 n +1, q^2)$ is $q^{2 n +1}+1$

10.37236/251 ◽  
2009 ◽  
Vol 16 (1) ◽  
Author(s):  
Frédéric Vanhove
Keyword(s):  
Maximum Size ◽  
Polar Space ◽  
Maximal Dimension ◽  
Partial Spread ◽  
Isotropic Subspaces ◽  
Hermitian Polar Space ◽  
Totally Isotropic Subspaces

We prove that in every finite Hermitian polar space of odd dimension and even maximal dimension $\rho$ of the totally isotropic subspaces, a partial spread has size at most $q^{\rho+1}+1$, where $GF(q^2)$ is the defining field. This bound is tight and is a generalisation of the result of De Beule and Metsch for the case $\rho=2$.

On the minimum number of blocks of a maximal partial spread in STS(v) and SQS(v)

1989 ◽  
Vol 36 (1-2) ◽  
pp. 37-48 ◽  
Author(s):  
Franco Eugeni ◽  
Mario Gionfriddo
Keyword(s):  
Partial Spread ◽  
Maximal Partial Spread ◽  
Minimum Number

scholarly journals Improving Separation Efficiency in End-of-Life Lithium-Ion Batteries Flotation Using Attrition Pre-Treatment

Minerals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 72
Author(s):  
Anna Vanderbruggen ◽  
Aliza Salces ◽  
Alexandra Ferreira ◽  
Martin Rudolph ◽  
Rodrigo Serna-Guerrero
Keyword(s):  
Lithium Ion Batteries ◽  
Separation Efficiency ◽  
Froth Flotation ◽  
Fine Fraction ◽  
Lithium Ion ◽  
Partial Spread ◽  
Graphite Particles ◽  
Mechanical Attrition ◽  
Cell Components ◽  
Pre Treatment

The comminution of spent lithium-ion batteries (LIBs) produces a powder containing the active cell components, commonly referred to as “black mass.” Recently, froth flotation has been proposed to treat the fine fraction of black mass (<100 µm) as a method to separate anodic graphite particles from cathodic lithium metal oxides (LMOs). So far, pyrolysis has been considered as an effective treatment to remove organic binders in the black mass in preparation for flotation separation. In this work, the flotation performance of a pyrolyzed black mass obtained from an industrial recycling plant was improved by adding a pre-treatment step consisting of mechanical attrition with and without kerosene addition. The LMO recovery in the underflow product increased from 70% to 85% and the graphite recovery remained similar, around 86% recovery in the overflow product. To understand the flotation behavior, the spent black mass from pyrolyzed LIBs was compared to a model black mass, comprising fully liberated LMOs and graphite particles. In addition, ultrafine hydrophilic particles were added to the flotation feed as an entrainment tracer, showing that the LMO recovery in overflow products is a combination of entrainment and true flotation mechanisms. This study highlights that adding kerosene during attrition enhances the emulsification of kerosene, simultaneously increasing its (partial) spread on the LMOs, graphite, and residual binder, with a subsequent reduction in selectivity.

Sign in / Sign up

Export Citation Format

Share Document