Results 111 to 120 of about 1,063,107 (310)

Data‐Driven Sliding Mode Control for Partially Unknown Nonlinear Systems

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper presents a novel data‐driven control framework for multi‐input multi‐output (MIMO) nonlinear systems with partially unknown dynamics and bounded disturbances. In practical scenarios, exact cancellation of system nonlinearities is often infeasible due to limited model information and unpredictable disturbances.
Jianglin Lan, Xianxian Zhao, Congcong Sun   +2 more
wiley   +1 more source

Modelling non‐linear psychological processes: Reviewing and evaluating non‐parametric approaches and their applicability to intensive longitudinal data

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Psychological concepts are increasingly understood as complex dynamic systems that change over time. To study these complex systems, researchers are increasingly gathering intensive longitudinal data (ILD), revealing non‐linear phenomena such as asymptotic growth, mean‐level switching, and regulatory oscillations.
Jan I. Failenschmid, Leonie V. D. E. Vogelsmeier, Joris Mulder, Joran Jongerling   +3 more
wiley   +1 more source

Zebra stripes: the questions raised by the answers

Biological Reviews, EarlyView.
ABSTRACT Multiple hypotheses have been suggested to explain why the three zebra species (Equus quagga, E. grevyi and E. zebra) are striped. We review how well these theories explain the nature (rather than simply the existence) of the stripes. Specifically, we explore how well different theories explain (i) the form of zebra stripes (especially on ...
Hamish M. Ireland, Graeme D. Ruxton
wiley   +1 more source

From Block-Oriented Models to the Koopman Operator: A Comprehensive Review on Data-Driven Chemical Reactor Modeling

Mathematics
Some chemical reactors exhibit coupled dynamics with multiple equilibrium points and strong nonlinearities. The accurate modeling of these dynamics is crucial to optimal control and increasing the reactor’s economic performance. While neural networks can
Mustapha Kamel Khaldi, Mujahed Al-Dhaifallah, Ibrahim Aljamaan, Fouad Mohammad Al-Sunni, Othman Taha, Abdullah Alharbi   +5 more
doaj   +1 more source

Emotional Expressions in Front‐End Team Work Hamper the Originality of New Product Ideas

Creativity and Innovation Management, EarlyView.
ABSTRACT The originality of new product ideas in the front‐end is crucial for new product development (NPD) success. To foster originality, organisations use idea sprints, where distributed and remote NPD teams working in agile develop ideas under fixed time and cost constraints, exchanging outputs virtually.
Ann‐Carolin Wolf, Theresa Treffers, Fred Langerak   +2 more
wiley   +1 more source

A Koopman-Theoretic Approach to Car-Following and Multi-Lane Interaction Modeling

IEEE Open Journal of Intelligent Transportation Systems
This paper presents a Koopman operator-based approach for the car-following model using SwarmDMD, a dynamic mode decomposition (DMD)-type algorithm designed to capture multi-agent interactions.
Shakib Mustavee, Shaurya Agarwal
doaj   +1 more source

Koopman Operators in Robot Learning

Koopman operator theory offers a rigorous treatment of dynamics and has been emerging as an alternative modeling and learning-based control method across various robotics sub-domains. Due to its ability to represent nonlinear dynamics as a linear (but higher-dimensional) operator, Koopman theory offers a fresh lens through which to understand and ...
Shi, Lu, Haseli, Masih, Mamakoukas, Giorgos, Bruder, Daniel, Abraham, Ian, Murphey, Todd, Cortes, Jorge, Karydis, Konstantinos   +7 more
openaire   +2 more sources

On the numerical approximation of the Perron-Frobenius and Koopman operator

Journal of Computational Dynamics, 2016
Information about the behavior of dynamical systems can often be obtained by analyzing the eigenvalues and corresponding eigenfunctions of linear operators associated with a dynamical system. Examples of such operators are the Perron-Frobenius and the Koopman operator.
Stefan Klus, Christof Schütte, Péter Koltai   +2 more
openaire   +3 more sources

Reversing the Gaze: An Autoethnographic Critique of Transracial–Transnational Adoption to Australia

Child &Family Social Work, EarlyView.
ABSTRACT In this paper, we engage with rescue and saviour narratives surrounding transracial–transnational adoption (also known as intercountry adoption) as a provocation and as manufactured myths. These myths have erased the nuances and complexities of transracial–transnational adoption by commodifying adoptees as pitiful orphans in need of rescue ...
Samara Kim, Kathomi Gatwiri, Lynne McPherson   +2 more
wiley   +1 more source

Recursive Forward-Backward EDMD: Guaranteed Algebraic Search for Koopman Invariant Subspaces

IEEE Access
The implementation of the Koopman operator on digital computers often relies on the approximation of its action on finite-dimensional function spaces. This approximation is generally done by orthogonally projecting on the subspace.
Masih Haseli, Jorge Cortes
doaj   +1 more source