Results 171 to 180 of about 507,195 (275)

On the Mean‐Field Limit of Consensus‐Based Methods

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Consensus‐based optimization (CBO) employs a swarm of particles evolving as a system of stochastic differential equations (SDEs). Recently, it has been adapted to yield a derivative free sampling method referred to as consensus‐based sampling (CBS). In this paper, we investigate the “mean‐field limit” of a class of consensus methods, including
Marvin Koß, Simon Weissmann, Jakob Zech
wiley   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama   +2 more
wiley   +1 more source

Post Activation Potentiation Is Greater in Human Triceps Brachii Versus Triceps Surae Muscles

open access: yesMuscle &Nerve, EarlyView.
ABSTRACT Introduction/Aims Voluntary muscle contractions result in a temporary increase in twitch force, a phenomenon termed post activation potentiation (PAP). In rodents and other species, PAP is observed predominantly or exclusively in fast twitch muscles. However, it has been suggested that in humans, PAP occurs more or less independently of muscle
William S. Zoughaib   +4 more
wiley   +1 more source

Scheduling Bodyguards

open access: yesNaval Research Logistics (NRL), EarlyView.
ABSTRACT Security agencies around the world use bodyguards to protect government officials and public figures. In this paper, we consider a two‐person zero‐sum game between a defender who allocates such bodyguards to protect several targets and an attacker who chooses one target to attack.
Loe Schlicher, Kyle Y. Lin, Moshe Kress
wiley   +1 more source

Contrasting effects of temperature across trophic levels in geothermally warmed soil food webs

open access: yesOikos, EarlyView.
Global warming is altering the structure and dynamics of ecological communities, with significant consequences for soil food webs. Rising temperatures are expected to accelerate metabolic rates in organisms, potentially altering species interactions, and the structure and energetics of food webs.
Estela Folch Chaos   +3 more
wiley   +1 more source

Contesting Regulatory Capacity: Exploring Doctrines in the Regulatory State

open access: yesPublic Administration and Development, EarlyView.
ABSTRACT The contemporary literature on regulation and development has emphasised the importance of low discretion devices for achieving desired policy objectives. At the same time, there has been a growing recognition that state capacity in general, and regulatory capacity more specifically, are essential for achieving development goals in a world of ...
Bruno Queiroz Cunha, Martin Lodge
wiley   +1 more source

Islamic Public Administration in Practice: The Taliban's “Gender Apartheid” Governance in Afghanistan

open access: yesPublic Administration and Development, EarlyView.
ABSTRACT This article analyzes the Taliban's post‐2021 governance model through the Islamic Public Administration (IPA) framework, focusing on justice, equality, and women's inclusion. It asks: (1) How does the Taliban's governance align with core IPA principles?
Parwiz Mosamim   +1 more
wiley   +1 more source

Systematic Parameter Selection for Short Fiber Polymer Composite Direct Fiber Simulation

open access: yesPolymer Composites, EarlyView.
Interactions of individually simulated fibers are systematically calibrated such that their orientation history agrees with the results from analytical orientation models. ABSTRACT The orientation of fibers in short discontinuous fiber reinforced polymer composites is a critical factor in determining final mechanical and thermal properties.
Jason B. Pierce, Douglas E. Smith
wiley   +1 more source

In‐situ Analysis of Paste Properties in Resonant Acoustic Mixers for Quality Monitoring

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
Quality monitoring is important to ensure manufacturing robustness and achieve consistent properties. For the emerging technology resonant acoustic mixing, this work uses motor data to detect differences in particle content in formulations and variations in powder feedstock properties.
Alexandra Dobbs   +3 more
wiley   +1 more source

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