Results 51 to 60 of about 1,619 (185)

Louse Flies on the Fly: Host Macroecology Shapes Interspecific Variation in Ectoparasite Prevalence Among Migrating Birds

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
We analysed over 100,000 migrating birds from 157 species to identify macroecological drivers of interspecific variation in louse fly prevalence. Using phylogenetically informed Bayesian models, we show that host morphology, ecology and biogeographic traits shape infection patterns, with Ornithomya avicularia and O.
Aleksandra Janiszewska   +7 more
wiley   +1 more source

Habitat complexity and prey composition shape an apex predator's habitat use across contrasting landscapes

open access: yesEcography, Volume 2026, Issue 6, June 2026.
The spatial ecology of stalk‐and‐ambush predators like the Eurasian lynx Lynx lynx depends on prey availability and environmental features, yet the relative roles of these factors remain unclear at large spatial scales. In this study, we analysed lynx habitat use across central and southern Finland using snow‐track data from the Wildlife Triangle ...
Francesca Malcangi   +4 more
wiley   +1 more source

Analysing biodiversity observation data collected in continuous time: Should we use discrete‐ or continuous‐time occupancy models?

open access: yesMethods in Ecology and Evolution
Biodiversity monitoring is undergoing a revolution, with fauna observation data being increasingly gathered continuously over extended periods, through sensors like camera traps and acoustic recorders, or via opportunistic observations.
Léa Pautrel   +3 more
doaj   +1 more source

Single server queuing model of Markov modulated bursty arrival with service following phase type distributions for underlay and overlay customers

open access: yesAin Shams Engineering Journal
Among the waiting models proposed in the literature most of them focus on homogeneous arrival rate. This paper proposes a single server waiting line with modulated arrival rate of small and large size of traffic sources.
Raghavendran. R, V. Vidhya
doaj   +1 more source

Pricing collateralized debt obligations with Markov-modulated Poisson processes [PDF]

open access: yesQuantitative Finance, 2011
For the valuation of a CDO (collateralized debt obligation), a standard approach in practice is to employ the Gaussian copula model of (Li, 7) [J. Fixed Income, 2000, 9, 43–54]. However, this model is limited in that its framework is completely static, failing to capture the dynamic evolution of the CDO.
Hideyuki Takada   +2 more
openaire   +1 more source

Bayesian Method with Clustering Algorithm for Credit Card Transaction Fraud Detection [PDF]

open access: yesRevista Română de Statistică, 2018
Card transaction fraud is prevalent anywhere. Even with current preventive measures like the Europay, MasterCard and Visa (EMV) chips, possible weaknesses or loopholes can be exploited by fraudsters.
Luis Jose S. Santos, Shirlee R. Ocampo
doaj  

Semi-Markov-modulated Poisson Process Parameters Estimation

open access: yes, 2023
Метою дослiдження є оцiнювання параметрiв прихованого процесу та побудова оцiнок iнтенсивностей процесу Пуассона, керованого цим прихованим ланцюгом, а також вiдновлення послiдовностi станiв прихованого ланцюга як такого, що максимiзує ймовiрнiсть ...
Меднiкова, Олександра Валерiївна
core  

Denoising Diffusion Model With Pixel‐Adaptive Convolutions for Sheet Metal Forming Analysis

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Traditional tool development processes in mechanical forming, especially for pressing tools, are often limited by time‐consuming trial‐and‐error cycles, which rely heavily on expert knowledge. These cycles can create bottlenecks and increase costs.
Syed Sarim Ali   +3 more
wiley   +1 more source

A model-based clustering method to detect infectious disease transmission outbreaks from sequence variation.

open access: yesPLoS Computational Biology, 2017
Clustering infections by genetic similarity is a popular technique for identifying potential outbreaks of infectious disease, in part because sequences are now routinely collected for clinical management of many infections.
Rosemary M McCloskey, Art F Y Poon
doaj   +1 more source

Excitonic Theory of the Ultrafast Optical Response of 2D‐Quantum‐Confined Semiconductors at Elevated Densities

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 6, June 2026.
In this work, an excitonic many‐body theory for the ultrafast optical response at elevated excitation densities for Wannier–Mott excitons is developed and applied to two distinct materials (GaAs quantum well and MoSe2 monolayer) as proponents of two different Coulomb‐interaction regimes.
Henry Mittenzwey   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy