Results 111 to 120 of about 1,128,514 (290)

The Stochastic‐Dissipative Störmer Problem‐Trajectories and Radiation Patterns

Annalen der Physik, EarlyView.
We consider charged particle motion and radiation in a dipole magnetic field, in the presence of friction and of stochastic forces. The numerical solutions of the Langevin equation reveal how these forces modify the complex dynamics of particles, and they offer some new insights into the nonlinear processes relevant to planetary radiation belts ...
Tiberiu Harko, Gabriela Raluca Mocanu
wiley   +1 more source

Output feedback robust stabilization of distributed‐order systems

Asian Journal of Control, EarlyView.
Abstract This paper addresses the challenge of robust fast stabilization for a class of dynamical systems characterized by slow and ultra‐slow dynamics. The system model is approximated using a distributed‐order derivative of the measured output, which captures the influence of the control input, system dynamics, and external disturbances.
Aldo Jonathan Muñoz‐Vázquez, José Eduardo Carvajal‐Rubio, Guillermo Fernández‐Anaya, Juan Diego Sánchez‐Torres   +3 more
wiley   +1 more source

Research on Nonlinear Dynamic Characteristics of Fractional Order Resonant DC-DC Converter Based on Sigmoid Function

Fractal and Fractional
Resonant DC-DC converters are a class of strongly nonlinear systems with rich nonlinear phenomena. In order to describe the dynamic behavior of resonant DC-DC converters more accurately, the nonlinear dynamic behavior of fractional order (FO) resonant DC-
Lingling Xie, Guangwei Xu
doaj   +1 more source

Full‐order observer design for quadratic port‐controlled Hamiltonian systems

Asian Journal of Control, EarlyView.
Abstract The full‐order observer design problem for a particular class of port‐controlled Hamiltonian systems is approached in this paper. The proposed full‐order observer scheme belongs to the structure preserving class of dynamic estimators as it preserves the natural stability properties of the approached class of systems that are useful for the ...
Michael Rojas, Christian Granados‐Salazar, Gerardo Espinosa‐Pérez   +2 more
wiley   +1 more source

Additively Manufactured Binder‐Free Electrodes for Supercapacitors

Batteries &Supercaps, EarlyView.
The study presents an innovative manufacturing process for electrodes in supercapacitors. The masked stereolithography method is used to produce electrodes that do not require a binder or metal foil. The printed electrodes have a microporous charter. Electrochemical measurements show that the additively manufactured electrodes behave in the same way as
Johannes Heumann, Dominik Müller, Norman T. M. Baltes, Sebastian Geiger, Peter Schultz, Angelos Polyzoidis, Jens Tübke   +6 more
wiley   +1 more source

Fully distributed consensus of nonlinear fractional multi‐agent systems based on combined event‐triggered mechanism

Mathematical Methods in the Applied Sciences, EarlyView., 2022
This article focuses on the fully distributed leader‐following consensus problem of nonlinear fractional multi‐agent systems via event‐triggered control technique. The main intention of this article is to design a novel event‐triggered mechanism, which not only takes into account both the relative error and the absolute error of the samples but also ...
Qiaoping Li, Chao Yue
wiley   +1 more source

Prescribing competence: The pros and cons of different methods for assessment

British Journal of Clinical Pharmacology, EarlyView.
Evaluating a medical graduate’s competence in rational prescribing is challenging. With the aim to guide and inspire teachers, this narrative review explores different methods that can be used to assess prescribing competence. Each method has its own advantages and disadvantages, and thus a mix of different assessment methods is needed throughout the ...
David J. Brinkman, Erik M. Donker, Jelle Tichelaar, on behalf of the CP4T programme   +3 more
wiley   +1 more source

Listening to Hong Kong children's perspectives through pretend play

British Educational Research Journal, EarlyView.
Abstract Quality in early childhood education and care (ECEC) has become an increasing concern in recent years. The issue has been regularly discussed by different stakeholders. However, the rising concern regarding quality in ECEC has not seriously taken into account children's perspectives.
Suzannie K. Y. Leung
wiley   +1 more source

RESEARCH ON BENDING⁃TORSION COUPLING VIBRATION CHARACTERISTIC OF COMPRESSOR SHAFT SYSTEM CONSIDERING HARD STIFFNESS CHARACTERISTIC

Jixie qiangdu
In order to investigate the influence of the coupling variable stiffness characteristics on the vibration behavior of the shaft system， the motor rotor⁃coupling⁃crankshaft⁃bearing of the compressor was taken as the object of study， and the Lagrange ...
ZHANG Hao, ZHAO Xiang, ZHANG DongMei, ZUO Song   +3 more
doaj  

Leading Regenerative Transformation: Cognitive Frame Characteristics Shaping Leaders' Approaches to Organizational Development

Business Strategy and the Environment, EarlyView.
ABSTRACT As the urgency to address global crises such as climate change and inequality intensifies, the concept of regenerative development has emerged as a transformative approach going beyond sustainability to actively restore and enhance both ecological and social systems.
Leonie Paul, Juha Väätänen, Hardik Bhimani, Anne‐Laure Mention   +3 more
wiley   +1 more source