Results 71 to 80 of about 10,348 (206)
Lattice permutations and Poisson-Dirichlet distribution of cycle lengths [PDF]
, 2012 We study random spatial permutations on ℤ3 where each jump x↦π(x) is penalized by a factor e−T∥x−π(x)∥2 . The system is known to exhibit a phase transition for low enough T where macroscopic cycles appear.
Daniel Ueltschi +6 more
core +1 more source
eDNA signals improve local predictions of fish abundances in Mediterranean coastal ecosystems
Journal of Applied Ecology, Volume 63, Issue 6, June 2026.This study demonstrates that integrating eDNA metabarcoding data into species distribution models can improve fish abundance predictions, especially for site‐attached and reef‐associated species. This approach provides a scalable and cost‐effective tool for monitoring, impact assessment, spatial planning and adaptive management of marine resources ...
Noémie Coulon +14 more
wiley +1 more source
Non-identifiability of the two state Markovian Arrival process [PDF]
In this paper we consider the problem of identifiability of the two-state Markovian Arrival process (MAP2). In particular, we show that the MAP2 is not identifiable and conditions are given under which two different sets of parameters, induce identical ...
Michael P. Wiper +2 more
core
Use of cumulative sums for detection of changepoints in the rate parameter of a poisson process [PDF]
, 2004 This paper studies the problem of multiple changepoints in rate parameter of a Poisson process. We propose a binary segmentation algorithm in conjunction with a cumulative sums statistic for detection of changepoints such that in each step we need only ...
Galeano, Pedro
core
Journal of Biogeography, Volume 53, Issue 6, June 2026.ABSTRACT Aim Quaternary climatic oscillations have profoundly shaped the genetic structure and geographic distributions of alpine biotas. Understanding how cold‐adapted taxa responded to past climatic shifts is essential for unravelling the processes shaping mountain biodiversity, yet cold‐adapted taxa may have followed divergent refugial histories. We
Emanuele Berrilli +2 more
wiley +1 more source
Semi-Markov-modulated Poisson Process Parameters Estimation
, 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
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SpatialESD: Spatial Ensemble Domain Detection in Spatial Transcriptomics
Advanced Science, Volume 13, Issue 30, 28 May 2026.ABSTRACT Spatial transcriptomics (ST) measures gene expression while preserving spatial context within tissues. One of the key tasks in ST analysis is spatial domain detection, which remains challenging due to the complex structure of ST data and the varying performance of individual clustering methods. To address this, we propose SpatialESD, a Spatial
Hongyan Cao +11 more
wiley +1 more source
Time to ruin, insolvency penalties and dividends in a Markov-modulated multi-risk model with common shocks [PDF]
We consider a main insurance company with K subcompanies (or lines of busi- ness). The joint evolution of the surpluses of these lines of business is modeled by a Markov-modulated multivariate compound Poisson model with Poisson common shocks, modified ...
Stéphane Loisel
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Integrative Zoology, Volume 21, Issue 3, Page 639-651, May 2026.In this study, we tested whether white and yellow morphs of the common wall lizard (Podarcis muralis) adopt alternative strategies shaped by the immuno‐competence handicap hypotheses (ICHH). We found that testosterone‐induced immune suppression was stronger in white males, while aggression decreased in both morphs.
Roberto Sacchi +5 more
wiley +1 more source
On identifiability of MAP processes [PDF]
Two types of transitions can be found in the Markovian Arrival process or MAP: with and without arrivals. In transient transitions the chain jumps from one state to another with no arrival; in effective transitions, a single arrival occurs.
Michael P. Wiper +2 more
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