Results 101 to 110 of about 24,420 (193)

Leaf Length Predicts Twig Xylem Vessel Diameter Across Angiosperms

Plant, Cell &Environment, Volume 49, Issue 3, Page 1330-1339, March 2026.
ABSTRACT As plants grow taller, increasing conductive pathlength imposes hydraulic resistance, challenging the maintenance of water transport to leaves. While tip‐to‐base conduit widening along the stem helps mitigate this resistance, theoretical models and empirical data suggest that stem widening alone is insufficient to fully compensate.
Patricia Rivera, Tommaso Anfodillo, Mark E. Olson   +2 more
wiley   +1 more source

Localisable moving average stable and multistable processes [PDF]

, 2009
We study a particular class of moving average processes which possess a property called localisability. This means that, at any given point, they admit a ``tangent process'', in a suitable sense.
Falconer, Kenneth, Guével, Ronan Le, Lévy-Véhel, Jacques   +2 more
core   +2 more sources

Research on Three‐Dimensional Autonomous Obstacle Avoidance Path Planning Methods for UAVs

Transactions on Emerging Telecommunications Technologies, Volume 37, Issue 2, February 2026.
This study presents a three‐dimensional autonomous obstacle‐avoidance path planning method for unmanned aerial vehicles (UAVs) based on a deep reinforcement learning (DRL)‐enhanced Mayfly Algorithm. The traditional Mayfly Algorithm suffers from issues such as random initial population generation and slow convergence.
Chong Wu, Hao Cheng, Hua Wang
wiley   +1 more source

State‐space models and inference approaches for aquatic animal tracking with passive acoustic telemetry and biologging sensors

Methods in Ecology and Evolution, Volume 17, Issue 2, Page 418-434, February 2026.
Abstract Passive acoustic telemetry systems are widely deployed to track animals in aquatic environments. However, investments in integrative methods of data analysis have remained comparatively limited, with current workflows typically considering individual movements separately from space use, home ranges and residency.
Edward Lavender, Andreas Scheidegger, Helen Moor, Carlo Albert   +3 more
wiley   +1 more source

Research on temperature control of proton exchange membrane electrolysis cell based on MO‐TD3

IET Renewable Power Generation
To solve the problem of temperature control in proton exchange membrane electrolytic cell (PEMEC), this paper presents a temperature control method based on multi‐experience pool probability playback and Ornstein‐Uhlenbeck noise‐twin delay depth ...
Libo Ma, Hongshan Zhao, Sichao Pan
doaj   +1 more source

The multivariate fractional Ornstein–Uhlenbeck process

Stochastic Processes and their Applications
Starting from the notion of multivariate fractional Brownian Motion introduced in [F. Lavancier, A. Philippe, and D. Surgailis. Covariance function of vector self-similar processes. Statistics & Probability Letters, 2009] we define a multivariate version of the fractional Ornstein-Uhlenbeck process. This multivariate Gaussian process is stationary,
Ranieri Dugo, Giacomo Giorgio, Paolo Pigato   +2 more
openaire   +2 more sources

Fluctuating Growth Rates Link Turnover and Unevenness in Species‐Rich Communities

Ecology Letters, Volume 29, Issue 2, February 2026.
Through a minimal model of ecological community dynamics, we explain how the interplay between environmental stochasticity, intra‐ and interspecific competition and dispersal relates to the maintenance of diversity, the commonness of rarity and compositional turnover.
Emil Mallmin, Arne Traulsen, Silvia De Monte   +2 more
wiley   +1 more source

Analysis of Stochastic SIRC Model with Cross Immunity Based on Ornstein-Uhlenbeck Process. [PDF]

Qual Theory Dyn Syst, 2023
Ni Z, Jiang D, Cao Z, Mu X.
europepmc   +1 more source

Dynamical Behaviors of Stochastic SIS Epidemic Model with Ornstein–Uhlenbeck Process

Axioms
Controlling infectious diseases has become an increasingly complex issue, and vaccination has become a common preventive measure to reduce infection rates. It has been thought that vaccination protects the population. However, there is no fully effective
Huina Zhang, Jianguo Sun, Peng Yu, Daqing Jiang   +3 more
doaj   +1 more source

First Hitting Place Probabilities for a Discrete Version of the Ornstein-Uhlenbeck Process

International Journal of Mathematics and Mathematical Sciences, 2009
A Markov chain with state space {0,…,N} and transition probabilities depending on the current state is studied. The chain can be considered as a discrete Ornstein-Uhlenbeck process. The probability that the process hits N before 0 is computed explicitly.
Mario Lefebvre, Jean-Luc Guilbault
doaj   +1 more source