Results 11 to 20 of about 5,972,586 (343)

Dynamical systems theory for nonlinear evolution equations [PDF]

, 2010
We observe that the fully nonlinear evolution equations of Rosenau and Hymann, often abbreviated as $K(n,\,m)$ equations, can be reduced to Hamiltonian form only on a zero-energy hypersurface belonging to some potential function associated with the ...
Amitava Choudhuri, B. Talukdar, Umapada Das   +2 more
openalex   +3 more sources

Toward an Algebraic Theory of Systems

Theoretical Computer Science, 2018
We propose the concept of a system algebra with a parallel composition operation and an interface connection operation, and formalize composition-order invariance, which postulates that the order of composing and connecting systems is irrelevant, a ...
Matt, Christian, Maurer, Ueli, Portmann, Christopher, Renner, Renato, Tackmann, Björn   +4 more
core   +5 more sources

Analysis of Interturn Faults on Transformer Based on Electromagnetic-Mechanical Coupling

Energies, 2023
A running transformer frequently experiences interturn faults; they are typically difficult to detect in their early stages but eventually progress to interturn short circuits, which cause damage to the transformer.
Nan Zhu, Ji Li, Lei Shao, Hongli Liu, Lei Ren, Lihua Zhu   +5 more
doaj   +1 more source

Transformer Fault Early Warning Analysis Based on Hierarchical Clustering Combined with Decision Trees

Energies, 2023
The issues of low accuracy, poor generality, high cost of transformer fault early warning, and the subjective nature of empirical judgments made by field maintenance personnel are difficult to solve with the traditional measurement methods used during ...
Xiaoqiang Liu, Ji Li, Lei Shao, Hongli Liu, Lei Ren, Lihua Zhu   +5 more
doaj   +1 more source

Superelasticity of Plasma‐ and Synthetic Membranes Resulting from Coupling of Membrane Asymmetry, Curvature, and Lipid Sorting

Advanced Science, 2021
Biological cells are contained by a fluid lipid bilayer (plasma membrane, PM) that allows for large deformations, often exceeding 50% of the apparent initial PM area. Isolated lipids self‐organize into membranes, but are prone to rupture at small (
Jan Steinkühler, Piermarco Fonda, Tripta Bhatia, Ziliang Zhao, Fernanda S. C. Leomil, Reinhard Lipowsky, Rumiana Dimova   +6 more
doaj   +1 more source

Stealthy Secret Key Generation

Entropy, 2020
In order to make a warden, Willie, unaware of the existence of meaningful communications, there have been different schemes proposed including covert and stealth communications.
Pin-Hsun Lin, Carsten R. Janda, Eduard A. Jorswieck, Rafael F. Schaefer   +3 more
doaj   +1 more source

In-Depth Study of the Corona Discharge Breakdown Thresholds in Groove Gap Waveguides and Enhancement Strategies for Inductive Bandpass Filters

IEEE Access, 2022
This work focuses on the study of the corona discharge breakdown in groove gap waveguides (GGWs) and inductive bandpass filters (BPFs) based on this technology. With the main aim of improving the peak power handling capability (PPHC), the location of the
Aitor Morales-Hernandez, Miguel Angel Sanchez-Soriano, Miguel Ferrando-Rocher, Stephan Marini, Vicente E. Boria   +4 more
doaj   +1 more source

Lie systems: theory, generalisations, and applications [PDF]

, 2011
Lie systems form a class of systems of first-order ordinary differential equations whose general solutions can be described in terms of certain finite families of particular solutions and a set of constants, by means of a particular type of mapping: the ...
J. De Lucas, J. De Lucas, J. F. Cari ˜nena, J. F. Cariñena   +3 more
core   +1 more source

dtwParallel: A Python package to efficiently compute dynamic time warping between time series

SoftwareX, 2023
dtwParallel is a Python package that computes the Dynamic Time Warping (DTW) distance between a collection of (multivariate) time series (MTS). dtwParallel incorporates the main functionalities available in current DTW libraries and novel functionalities
Óscar Escudero-Arnanz, Antonio G. Marques, Cristina Soguero-Ruiz, Inmaculada Mora-Jiménez, Gregorio Robles   +4 more
doaj   +1 more source

Variational Theory of Balance Systems [PDF]

, 2009
In this work we apply the Poincare-Cartan formalism of the Classical Field Theory to study the systems of balance equations (balance systems). We introduce the partial k-jet bundles of the configurational bundle and study their basic properties: partial ...
Preston, Serge
core   +3 more sources