Results 121 to 130 of about 12,139 (222)

Deep Learning‐Based Particle Tracking Velocimetry (PTV) for Spherical and Non‐Spherical Particles: Application to Sediment Transport

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Particle‐resolved measurements in physical experiments are crucial to the study of sediment transport. Conventional particle tracking velocimetry (PTV) relies on template matching of simple shapes via intensity thresholding and nearest‐neighbor linking.
Wenzheng Su, Lu Jing, Mengzhen Xu, Xudong Fu   +3 more
wiley   +1 more source

PFAS from a Discrete‐Event Terrestrial Source Migrates with Groundwater to Intertidal Seepages

Groundwater, Volume 64, Issue 3, Page 323-334, May/June 2026.
PFAS is conveyed to the coastal intertidal zone from sources across the terrestrial landscape. Discharge of PFAS into the coastal ecosystem is complicated in space and time by the ongoing bi‐directional exchange of terrestrial groundwater and ocean water driven by tidal pumping within discharge areas.
Martin A. Briggs, Eric A. White, Patrick T. Scordato, Hayley G. Lind, Zachary O. O'Neal, David M. Rey, Timothy D. McCobb, Christopher T. Green, Denis R. LeBlanc   +8 more
wiley   +1 more source

Observing Systems Simulation Experiments of Hypothetical Hourly Global Coverage of Microwave Satellite Radiances: Imbalance and Adaptive Observation Error Inflation

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract This study investigates the potential impacts of frequent global coverage of satellite microwave radiances using a global atmospheric data assimilation (DA) system. Observing Systems Simulation Experiments (OSSEs) were performed using the Local Ensemble Transform Kalman Filter with the Nonhydrostatic Icosahedral Atmospheric Model (NICAM ...
Rakesh Teja Konduru, Jianyu Liang, Shigenori Otsuka, Takemasa Miyoshi   +3 more
wiley   +1 more source

Multi-Source Fusion Monitoring of Global and Local Inclination in Historic Buildings Using EKF with Fractional-Order State Modeling

Buildings
Historic buildings exhibit coupled response characteristics during long-term service, characterized by slowly varying global inclination evolution superimposed with local component-level deformation.
Pengfei Wang, Gen Liu, Canhui Wang, Ziyi Wang, Jian Wang, Yanjie Liu, Liang Liao, Qinwei Jiang, Guo Chen   +8 more
doaj   +1 more source

From Property Companies to Real Estate Investment Trusts: The Impact of Economic and Property Factors in the UK Commercial Property Returns [PDF]

This study investigates cross-sectionally the impact of economic and property factors on the returns of UK property companies and real estate investment trusts.
Vitor Leone
core  

Simple Kalman filter alternative: the multi‐fractional order estimator

IET Radar, Sonar & Navigation, 2013
This study is an extension of a presentation given at the 2012 Radar Conference in Glasgow, UK entitled: Simple Disambiguation of Orthogonal Projection in Kalman's Filter Derivation . It is shown therein that Kalman misunderstood and consequently misapplied orthogonal projection in his ...
openaire   +1 more source

Efficiency and Sensitivity Analysis of Observation Networks for Atmospheric Inverse Modelling with Emissions

, 2015
The controllability of advection-diffusion systems, subject to uncertain initial values and emission rates, is estimated, given sparse and error affected observations of prognostic state variables.
Elbern, Hendrik, Jacob, Birgit, Wu, Xueran   +2 more
core  

Processing the Controllability of Control Systems with Distinct Fractional Derivatives via Kalman Filter and Gramian Matrix

Fractal and Fractional
In this paper, we investigate the controllability conditions of linear control systems involving distinct local fractional derivatives. Sufficient conditions for controllability using Kalman rank conditions and the Gramian matrix are presented.
Muath Awadalla, Abir Chaouk, Maher Jneid, Kinda Abuasbeh, Jihan Alahmadi   +4 more
doaj   +1 more source

Robust State Estimation of Power System Based on Unscented Kalman Filter with Fractional-Order Adaptive Generalized Cross Correlation Entropy

Mathematics
With the high penetration of power electronic devices, modern power systems exhibit complex fractional-order dynamic characteristics. Addressing this, along with the prevalent issues of multi-modal non-Gaussian noise, outliers, and sudden load changes, a
Yan Huang, Shangyong Wen, Hongyan Xin, Chaohui Xin   +3 more
doaj   +1 more source

The Role of Inflation Persistence in the Inflation Process in the New EU Member States [PDF]

The aim of this paper is to compare inflation persistence between the New Member States (NMS) that joined the European Union in 2004 and 2007 and selected euro area members. If the levels of inflation persistence between the two groups are different, the
Branislav Saxa, Kateøina Šmídková, Michal Franta   +2 more
core