Results 191 to 200 of about 3,661,284 (296)

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori   +1 more
wiley   +1 more source

Nonprofit Governance and Financial Stability: A Study of Government‐Funded Social Services

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT Nonprofit social service providers are essential in delivering vital services, often with public funding. This study adopts a contingency perspective to explore the relationship between organizational governance and financial stability in publicly funded nonprofit organizations. We use a combination of comparative multilevel analysis (CMA) and
Florentine Maier   +4 more
wiley   +1 more source

High-accuracy pseudospectral scheme for fractional diffusion-wave problems based on cardinal functions. [PDF]

open access: yesPLoS One
Saray BN   +5 more
europepmc   +1 more source

Coverage‐based rarefaction fails to quantify relative species richness

open access: yesOikos, EarlyView.
Coverage‐based rarefaction (CBR) is a high‐profile tool for assessing biodiversity that provides relative species richness estimates by leveraging the Good‐Turing index u to interpolate. In contrast to alternatives such as the Shannon and Simpson indices, CBR's main appeal is providing values in units of species. CBR is tested against a series of other
John Alroy
wiley   +1 more source

Coexisting ant species differ in ability to meet their intrinsic nutritional needs

open access: yesOikos, EarlyView.
Coexisting species are often assumed to reduce competition by foraging for foods that differ in nutrient composition, but few studies test whether field nutritional differences correspond to intrinsic differences in macronutrient selectivity. We compared field estimates of worker trophic position (tissue isotopes: δ15N) and worker tissue stoichiometry (
Hannah L. Riskas   +4 more
wiley   +1 more source

Undetected Error Bounds for Hybrid Integrity Protection Using Reed-Muller Codes, Algebraic Manipulation Detection, and Universal Hashing. [PDF]

open access: yesEntropy (Basel)
Shavkatovich BA   +9 more
europepmc   +1 more source

Covariant Approach to the Geometric Dilution of Precision. [PDF]

open access: yesSensors (Basel)
Montesinos RS   +2 more
europepmc   +1 more source

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