Results 101 to 110 of about 894 (220)

Koopman Constrained Policy Optimization: A Koopman operator theoretic method for differentiable optimal control in robotics

, 2023
Deep reinforcement learning has recently achieved state-of-the-art results for robotic control. Robots are now beginning to operate in unknown and highly nonlinear environments, expanding their usefulness for everyday tasks.
Retchin, Matthew
core   +1 more source

LPV Modeling Using the Koopman Operator

, 2020
Linear parameter-varying (LPV) models have been introduced to describe nonlinear (NL) and time-varying (TV) systems and make use of powerful results of linear control theory.
Schoukens, Maarten; id_orcid, Tóth, Roland; id_orcid, Iacob, L.C.   +2 more
core   +3 more sources

Boosting PM2.5 short-term prediction by coupling graph attention and koopman networks

Computational Urban Science
Accurately predicting PM2.5 concentrations remains a major challenge due to the complex and nonlinear nature of its formation and transport processes. Traditional models often struggle to capture the spatiotemporal dynamics of PM2.5, particularly under ...
Yuhan Yu, Peiling Li, Peng Tang, Bin Wang, Kewei Liang, Xinru Guo, Feng Zhang   +6 more
doaj   +1 more source

Intertemporal Judgements in Multi‐Attribute Decision‐Making: Biases and Mitigation Ideas

Journal of Multi-Criteria Decision Analysis, Volume 33, Issue 2, August 2026.
ABSTRACT Intertemporal judgements are susceptible to biases that can distort evaluations and lead to inconsistent choices. While time‐related biases have been studied extensively from a descriptive perspective, little attention has been given to prescriptive approaches and the complex trade‐offs involved in multi‐attribute decision‐making (MADM).
Pelin Gülüm, Yousef Maknoon, Jafar Rezaei   +2 more
wiley   +1 more source

Birth of a scapegoat: An actor‐affect‐affordance model of symbolic attribution in the digital age

Political Psychology, Volume 47, Issue 4, August 2026.
Abstract How do scapegoating narratives emerge, diffuse, and solidify within digital media ecosystems? This paper introduces an actor‐affect‐affordance (3A) model to explain how complex social problems become symbolically attributed to marginalized groups.
Jack Gabriel Risien Wippell
wiley   +1 more source

Koopman Theory for Boolean Networks

Networks of agents with logical states, namely Boolean networks, arise in various application domains including biology, computer networks, and social networks.
Valcher, Maria Elena, Qi, Hongsheng, Shi, Guodong, Kong, He   +3 more
core   +1 more source

FlightKooba: A Fast Interpretable FTP Model

IEEE Access
Flight trajectory prediction (FTP) and similar time series tasks typically require capturing smooth latent dynamics hidden within noisy signals.
Jing Lu, Xuan Wu, Yizhun Tian, Songhan Fan, Yali Fang   +4 more
doaj   +1 more source

Analysis of Two New Flavonoid Glycosides From Zanha golungensis Hiern With COX Inhibition Activity: Structural Elucidation, DFT Calculations, In Vitro and Molecular Docking Assessment

Analytical Science Advances, Volume 7, Issue 1, June 2026.
Zanha golungensis contains phenolic compounds amongst which are two previously undescribed flavonoid glycosides as shown in this study. The constituents of this plant exhibit anti‐inflammatory activity by inhibiting cyclooxygenases (COX‐1 and COX‐2).
Jean Zeuikena, Romeo Toko Feunaing, Alfred Ngenge Tamfu, Abel Joel Yaya Gbaweng, Celine Henoumont, Sophie Laurent, El Hassane Anouar, Emmanuel Talla   +7 more
wiley   +1 more source

Koopman Operator Theory Applied to Lambert’s Problem with a Spectral Behavior Analysis

, 2023
Astrodynamics is abundant with nonlinear dynamical systems, such as satellites operating within Earth’s gravitational field. With the increase in the number of satellite constellations, making accurate predictions of the motion of satellites throughout ...
Pasiecznik, Julia
core  

Social and Anxiety‐Like Behaviors Are Affected in Juvenile Mice With Gli2+/− but Not Gli3+/𝛥699 Genetic Modifications

Brain and Behavior, Volume 16, Issue 6, June 2026.
Across Gli3+/Δ699, Gli2+/−, and combined Gli2+/−;Gli3+/Δ699 mice (males and females, with wild‐type controls), GLI2 and GLI3 differentially regulate anogenital distance and juvenile behavior, with amplified effects under combined disruption, whereas circulating steroids and sexually dimorphic nucleus area remain unchanged. Created in BioRender. Niepsuj,
Thomas Niepsuj, Rithika Nurani, Leykza Carreras‐Simons, Wade Bushman, Joan S. Jorgensen, Walid A. Farhat, Anthony P. Auger   +6 more
wiley   +1 more source