Results 141 to 150 of about 508,325 (367)

Modeling the Intermediate Flow Regime in Flow‐Compensated Intravoxel Incoherent Motion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The intravoxel incoherent motion (IVIM) model is commonly used to separate the effects of motion related to diffusion and blood microcirculation (perfusion) on the MR signal. Depending on the encoding time (T), it is possible to probe the different temporal regimes of blood motion, which resemble a ballistic flow at short T and a ...
Louise Rosenqvist, Mikael Montelius, Isabella M. Björkman‐Burtscher, Elina Petersson, Maria Ljungberg, Oscar Jalnefjord   +5 more
wiley   +1 more source

HyLPD Digital Twin Control for UAV Stability in High‐Wind Conditions

Optimal Control Applications and Methods, EarlyView.
This work introduces a novel HyLPD, a hybrid control framework combining Linear Quadratic Regulator (LQR) for baseline stability and Deep Deterministic Policy Gradient (DDPG) for adaptive compensation, tailored for UAVs under high‐wind conditions.
Cara Rose, Robert McMurray, Muhammad Usman Hadi   +2 more
wiley   +1 more source

Applying Dynamics/Cost Parameter Continuation to the Optimal Guidance of Variable‐Speed Unicycle

Optimal Control Applications and Methods, EarlyView.
(a) Classical parameter continuation method diverges. (b) Dynamics/cost parameter continuation method converges. ABSTRACT The problem of a variable‐speed unicycle guidance to the stationary target is considered. The vehicle should be guided to the origin while minimizing the energy loss due to the induced drag.
Gleb Merkulov, Vladimir Turetsky, Tal Shima   +2 more
wiley   +1 more source

Stationary Quantum Markov processes as solutions of stochastic differential equations [PDF]

, 1998
Jürgen Hellmich, Claus Köstler, Burkhard Kümmerer   +2 more
openalex   +1 more source

Functional diversity in agricultural landscapes: evidence of long‐term clustering and multi‐scale effects of land use on avian communities

Oikos, EarlyView.
Functional diversity (FD) is an essential community property connecting biodiversity, ecosystem functioning, and conservation objectives. In agricultural landscapes, avian communities, which play key functional roles, are facing large‐scale biodiversity erosion, largely due to land‐use changes.
Pietro Tirozzi, Olivia Dondina, Valerio Orioli, Luciano Bani   +3 more
wiley   +1 more source

Stationary and related stochastic processes : sample function properties and their applications, by Harald Cramer and M.R. Leadbetter. John Wiley and Sons, New York, 1967. 348 pages. $12.50. [PDF]

, 1968
Charles H. Kraft
openalex   +1 more source

Investigating the Three‐Dimensional Forming of Microfibrillated Cellulose‐Coated Paperboard With Full and Localised Coatings in Thermoforming, Hydroforming and Deep Drawing

Packaging Technology and Science, EarlyView.
The 3D formability of paperboard was examined using full and localised microfibrillated cellulose (MFC) coatings in thermoforming, hydroforming and deep drawing, and the results were linked to bulge‐test strain behaviour. Full‐surface fluidised MFC coatings consistently improved strain capacity and 3D formability, achieving performance comparable to ...
Sanaz Afshariantorghabeh, Cédric Brunk, Peter Groche, Ville Leminen   +3 more
wiley   +1 more source

Pointwise Stationary Fluid Models for Stochastic Processing Networks [PDF]

, 2009
Achal Bassamboo, J. Michael Harrison, Assaf Zeevi   +2 more
openalex  

Meixner Wavelet Transform: A Tool for Studying Stationary Discrete-Time Stochastic Processes

, 2003
Irina B. Grafova, B. M. Grafov
openalex   +2 more sources

Land data assimilation of satellite‐based surface soil moisture: Impact on atmospheric simulations over the contiguous United States

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Soil Moisture Active Passive soil moisture retrievals are assimilated into a land surface model and the resulting land reanalysis product is used to initialise the land component of coupled land‐atmosphere experiments. We show that the local impact of land data assimilation on the atmosphere is influenced by two factors: the magnitude by which it ...
Zdenko Heyvaert, Michel Bechtold, Wouter Dorigo, Jonas Mortelmans, Daniel Hagan, Joseph Santanello, Gabriëlle De Lannoy   +6 more
wiley   +1 more source