Results 41 to 50 of about 2,655,581 (286)

Some unit square integrals [PDF]

open access: yesThe Ramanujan Journal, 2016
In this article we prove some identities which allow us to evaluate some multiple unit square integrals. In our examples we will give the value of some double and triple integrals. Then, we prove several classical integral formulas with the help of these identities and we present others that seems to be new.
openaire   +2 more sources

An extension of Tamari lattices [PDF]

open access: yes, 2014
For any finite path $v$ on the square grid consisting of north and east unit steps, starting at (0,0), we construct a poset Tam$(v)$ that consists of all the paths weakly above $v$ with the same number of north and east steps as $v$.
Préville-Ratelle, Louis-François   +1 more
core   +5 more sources

Exploring the effectiveness of a COVID-19 contact tracing app using an agent-based model

open access: yesScientific Reports, 2020
A contact-tracing strategy has been deemed necessary to contain the spread of COVID-19 following the relaxation of lockdown measures. Using an agent-based model, we explore one of the technology-based strategies proposed, a contact-tracing smartphone app.
Jonatan Almagor, Stefano Picascia
doaj   +1 more source

Patterns of inflammation, microstructural alterations, and sodium accumulation define multiple sclerosis subtypes after 15 years from onset

open access: yesFrontiers in Neuroinformatics, 2023
IntroductionConventional MRI is routinely used for the characterization of pathological changes in multiple sclerosis (MS), but due to its lack of specificity is unable to provide accurate prognoses, explain disease heterogeneity and reconcile the gap ...
Antonio Ricciardi   +18 more
doaj   +1 more source

TRANSLATIVE PACKING TWO SQUARES IN THE UNIT SQUARE

open access: yesDemonstratio Mathematica, 2003
For a given square \(S\) and a sequence \((S_n)\) of squares in the plane, we say that \((S_n)\) can be translatively packed in \(S\) if there exist translations \(\tau_i\) such that the translates \(\tau_i S_i\) \((i= 1,\dots, n)\) have pairwise disjoint interiors and are subsets of \(S\).
openaire   +2 more sources

The opaque square

open access: yes, 2013
The problem of finding small sets that block every line passing through a unit square was first considered by Mazurkiewicz in 1916. We call such a set {\em opaque} or a {\em barrier} for the square. The shortest known barrier has length $\sqrt{2}+ \frac{\
Dumitrescu, Adrian, Jiang, Minghui
core   +1 more source

Opinion: more mouse models and more translation needed for ALS

open access: yesMolecular Neurodegeneration, 2023
Amyotrophic lateral sclerosis is a complex disorder most of which is ‘sporadic’ of unknown origin but approximately 10% is familial, arising from single mutations in any of more than 30 genes.
Elizabeth M.C. Fisher   +9 more
doaj   +1 more source

Inteligencia artificial en esclerosis múltiple

open access: yesKranion, 2023
La inteligencia artificial (IA) es la rama de la ciencia que tiene como objetivo crear algoritmos capaces de llevar a cabo tareas que normalmente requieren inteligencia humana.
Carmen Tur, Sara Collorone
doaj   +1 more source

Packing Unit Squares in a Rectangle [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2005
For a positive integer $N$, let $s(N)$ be the side length of the minimum square into which $N$ unit squares can be packed. This paper shows that, for given real numbers $a,b\geq 2$, no more than $ab -(a+1-\lceil a\rceil) -(b+1-\lceil b\rceil)$ unit squares can be packed in any $a'\times b'$ rectangle $R$ with $a' < a$ and $b' < b$. From this, we
openaire   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

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