Results 11 to 20 of about 126,178 (307)

Observational and Critical State Physics Descriptions of Long-Range Flow Structures

open access: yesGeosciences, 2020
Using Fracture Seismic methods to map fluid-conducting fracture zones makes it important to understand fracture connectivity over distances greater 10−20 m in the Earth’s upper crust.
Peter E. Malin   +3 more
doaj   +1 more source

A Framework for Analysis and Prediction of Operational Risk Stress

open access: yesMathematical and Computational Applications, 2021
A model for financial stress testing and stability analysis is presented. Given operational risk loss data within a time window, short-term projections are made using Loess fits to sequences of lognormal parameters.
Peter Mitic
doaj   +1 more source

On the three-spliced Exponential-Lognormal-Pareto distribution

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
To model statistical data coming from two di erent distributions, Cooray and Ananda [1] introduced a composite (two-spliced) Lognormal-Pareto model, that was further extended by Scollnik [9] and fitted to insurance data.
Bâcă Adrian, Vernic Raluca
doaj   +1 more source

The Poisson-lognormal model as a versatile framework for the joint analysis of species abundances

open access: yesbioRxiv, 2020
Joint Species Abundance Models (JSDM) provide a general multivariate framework to study the joint abundances of all species from a community. JSDM account for both structuring factors (environmental characteristics or gradients, such as habitat type or ...
J. Chiquet, M. Mariadassou, S. Robin
semanticscholar   +1 more source

Call center service times are lognormal: A Fokker–Planck description [PDF]

open access: yesMathematical Models and Methods in Applied Sciences, 2018
Call centers are service networks in which agents provide telephone-based services. An important part of call center operations is represented by service durations.
Stefano Gualandi, G. Toscani
semanticscholar   +1 more source

BRAQUE: Bayesian Reduction for Amplified Quantization in UMAP Embedding

open access: yesEntropy, 2023
Single-cell biology has revolutionized the way we understand biological processes. In this paper, we provide a more tailored approach to clustering and analyzing spatial single-cell data coming from immunofluorescence imaging techniques.
Lorenzo Dall’Olio   +4 more
doaj   +1 more source

Modeling income distribution: An econophysics approach

open access: yesMathematical Biosciences and Engineering, 2023
This study aims to develop appropriate models for income distribution in Iran using the econophysics approach for the 2006–2018 period. For this purpose, the three improved distributions of the Pareto, Lognormal, and Gibbs-Boltzmann distributions are ...
Hossein Jabbari Khamnei   +3 more
doaj   +1 more source

Lognormal Lorenz and normal receiver operating characteristic curves as mirror images [PDF]

open access: yesRoyal Society Open Science, 2015
The Lorenz curve for assessing economic inequality depicts the relation between two cumulative distribution functions (CDFs), one for the distribution of incomes or wealth and the other for their first-moment distribution.
R. John Irwin, Michael J. Hautus
doaj   +1 more source

A New Asymptotic Analysis Technique for Diversity Receptions Over Correlated Lognormal Fading Channels [PDF]

open access: yesIEEE Transactions on Communications, 2017
Prior asymptotic performance analyses are based on the series expansion of the moment-generating function (MGF) or the probability density function (PDF) of channel coefficients.
Bingcheng Zhu   +5 more
semanticscholar   +1 more source

Neuronal Population Activity in Spinal Motor Circuits: Greater Than the Sum of Its Parts

open access: yesFrontiers in Neural Circuits, 2017
The core elements of stereotypical movements such as locomotion, scratching and breathing are generated by networks in the lower brainstem and the spinal cord.
Rune W. Berg
doaj   +1 more source

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