Results 141 to 150 of about 341,424 (240)
The Geographic Moran Effect: Theory, Methods, and Interpretation
Geographical Analysis, Volume 59, Issue 1, January 2027.ABSTRACT The Moran effect traditionally refers to the synchronization of population dynamics driven by shared environmental forcing rather than direct interactions among populations. Although extensively studied in population ecology, the Moran effect has received limited attention in geography, and its applicability remains insufficiently explored. In
Zhenzhi Jiao +2 more
wiley +1 more source
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT This work presents a novel neural‐network compression approach for polyconvex envelopes of isotropic functions. The approach relies on a classical sufficient criterion for polyconvexity and is particularly suited for the representation of determinant‐constrained energy densities arising in non‐linear elasticity.
Timo Neumeier, Julian Salmon
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Surrogate‐Assisted Nonlinear Model Predictive Control for a Lambda Robot
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT This work presents a nonlinear model predictive control (NMPC) framework for a lambda‐shaped parallel robot that incorporates data‐driven surrogates to facilitate control design. An inverse surrogate model is used to provide an efficient initialization of the control inputs for NMPC.
Sanam Hajipour +2 more
wiley +1 more source
Effective Crack Resistance of a Simplified Ductile Heterogeneous Material With Circular Inclusions
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT This contribution investigates the effective crack resistance obtained from a numerical crack‐growth experiment for a simplified two‐dimensional ductile heterogeneous material. The resolved microstructure contains circular inclusions. Their stiffness and fracture resistance are varied independently together with the ligament width between ...
Alexander Schlüter +2 more
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LPV Updates for Sequentially Linearized Moving Horizon Estimation of Nonlinear Systems
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT Moving horizon estimation (MHE) provides high‐precision state estimation for nonlinear systems, but it is often limited by the substantial computational demands of solving a nonlinear optimization problem at every sampling step. To address this issue, we develop an efficient MHE scheme based on linear parameter‐varying (LPV) formulation, where
Jiaxin Ji +3 more
wiley +1 more source
A Coupled FE‐FFT Multiscale Framework for Heterogeneous Porous Materials Using preCICE
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT This work presents a coupled finite element–fast Fourier transform (FE–FFT) multiscale framework for the simulation of heterogeneous and graded porous materials. The macroscopic boundary value problem is solved with the finite element (FE) method in Julia using Ferrite.jl, while the microscopic response of periodic unit cells is obtained from ...
Julian Dahler +2 more
wiley +1 more source
Random‐X Prediction Error Under Model Misspecification
Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 6, December 2026.ABSTRACT In recent years, advances in computing, particularly the internet, have enabled the collection of Big Data. This has been the key of the current boom of Artificial Intelligence, fed with huge amounts of data, not necessarily of good quality. Processing them with traditional analyses may be unaffordable and new techniques are continuously being
Alvaro Cia‐Mina +3 more
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International Journal of Robust and Nonlinear Control, Volume 36, Issue 16, Page 7337-7351, 10 November 2026.ABSTRACT This article proposes a distributed resilient control framework to ensure consensus tracking for nonlinear heterogeneous multi‐agent systems (NHMAS) under aperiodic denial‐of‐service (DoS) attacks. First, a resilient observer is introduced to estimate the leader's state considering that not all agents have direct access to the leader's ...
Li Liu, Bing Yan, Junkang Ni, Peng Shi
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A diagonally weighted matrix norm between two covariance matrices
, 2019 The square of the Frobenius norm of a matrix A is defined as the sum of squares of all the elements of A. An important application of the norm in statistics is when A is the difference between a target (estimated or given) covariance matrix and a ...
Noel Cressie (19588777) +1 more
core
A PLS‐CM and ASCA Procedure to Explore the Overlap of Two Classes
Journal of Chemometrics, Volume 40, Issue 11, November 2026.ABSTRACT Class‐modeling (CM) and discriminant analysis (DA) are commonly applied to binary classification. DA enforces exclusive assignments of unknowns by constructing optimal delimiters, which may convey unwarranted certainty. Conversely, CM defines two class regions in the predictor space (2‐class model), allowing individuals to be assigned to one ...
O. Valencia, M. C. Ortiz, L. A. Sarabia
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