Results 21 to 30 of about 23,134,989 (378)

Population growth makes waves in the distribution of pairwise genetic differences.

open access: yesMolecular biology and evolution, 1992
Episodes of population growth and decline leave characteristic signatures in the distribution of nucleotide (or restriction) site differences between pairs of individuals. These signatures appear in histograms showing the relative frequencies of pairs of
A. Rogers, H. Harpending
semanticscholar   +1 more source

WEAK DISTRIBUTIVITY IMPLYING DISTRIBUTIVITY [PDF]

open access: yesThe Journal of Symbolic Logic, 2016
AbstractLet $B$ be a complete Boolean algebra. We show that if λ is an infinite cardinal and $B$ is weakly (λω, ω)-distributive, then $B$ is (λ, 2)-distributive. Using a similar argument, we show that if κ is a weakly compact cardinal such that $B$ is weakly (2κ, κ)-distributive and $B$ is (α, 2)-distributive for each α < κ, then $B$ is (κ, 2 ...
openaire   +3 more sources

ON THE MUTH DISTRIBUTION

open access: yesMathematical Modelling and Analysis, 2015
The Muth distribution is a continuous random variable introduced in the context of reliability theory. In this paper, some mathematical properties of the model are derived, including analytical expressions for the moment generating function, moments, mode, quantile function and moments of the order statistics.
Jodra, Pedro   +2 more
openaire   +7 more sources

Distribution Tableaux, Distribution Models [PDF]

open access: yesAxioms, 2020
The concept of distribution is a concept within traditional logic that has been fundamental for the syntactic development of Sommers and Englebretsen’s term functor logic, a logic that recovers the term syntax of traditional logic. The issue here, however, is that the semantic counterpart of distribution for this logic is still in the making ...
openaire   +3 more sources

Quantum Key Distribution [PDF]

open access: yes, 2011
This chapter describes the application of lasers, specifically diode lasers, in the area of quantum key distribution (QKD). First, we motivate the distribution of cryptographic keys based on quantum physical properties of light, give a brief introduction
Chan, Philip   +3 more
core   +2 more sources

Balance diagnostics for comparing the distribution of baseline covariates between treatment groups in propensity-score matched samples

open access: yesStatistics in Medicine, 2009
The propensity score is a subject's probability of treatment, conditional on observed baseline covariates. Conditional on the true propensity score, treated and untreated subjects have similar distributions of observed baseline covariates.
P. Austin
semanticscholar   +1 more source

GOE and ${\rm Airy}_{2\to 1}$ marginal distribution via symplectic Schur functions [PDF]

open access: yes, 2019
We derive Sasamoto's Fredholm determinant formula for the Tracy-Widom GOE distribution, as well as the one-point marginal distribution of the ${\rm Airy}_{2\to1}$ process, originally derived by Borodin-Ferrari-Sasamoto, as scaling limits of point-to-line
Bisi, Elia, Zygouras, Nikos
core   +2 more sources

Predicting species distribution: offering more than simple habitat models.

open access: yesEcology Letters, 2005
In the last two decades, interest in species distribution models (SDMs) of plants and animals has grown dramatically. Recent advances in SDMs allow us to potentially forecast anthropogenic effects on patterns of biodiversity at different spatial scales ...
A. Guisan, W. Thuiller
semanticscholar   +1 more source

A study on stabilization of operation time for hydraulic operating circuit breaker (Stability of hydraulic operation stabilizing system holding constant high pressure)

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Stability of a hydraulic operation stabilization system during valve returning motion was investigated by the measurement and numerical analysis of the hydraulic circuit.
Tohru YAMASHITA   +4 more
doaj   +1 more source

Distributional Replication [PDF]

open access: yesEntropy, 2021
A function which transforms a continuous random variable such that it has a specified distribution is called a replicating function. We suppose that functions may be assigned a price, and study an optimization problem in which the cheapest approximation to a replicating function is sought.
openaire   +5 more sources

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