Results 81 to 90 of about 3,055 (206)

Analysis of fractional COVID-19 epidemic model under Caputo operator. [PDF]

open access: yesMath Methods Appl Sci, 2021
Zarin R   +4 more
europepmc   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source

How Changing Food Preferences and Technology Are Transforming Food Markets

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT The foods that consumers purchase and how they purchase food are changing over time. In this article, we discuss how health prioritization and environmental concerns, combined with new technologies, are changing consumers' food preferences and retail choices.
Jill J. McCluskey, Jillian Hyink
wiley   +1 more source

EPA Enforcement Actions and Property Prices

open access: yesAccounting &Finance, EarlyView.
ABSTRACT This study examines the effects of Environmental Protection Agency (EPA) enforcement actions on property prices in the United States. Using data on EPA enforcement cases, we assess how investors and homeowners react to regulatory actions to curb environmental violations.
Van Le, My Nguyen, Anh Viet Pham
wiley   +1 more source

Characterisation of the Mesial Root and Middle Mesial Canal Morphology in Mandibular First Molars: An Ex Vivo Micro‐CT Study

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT This ex vivo study characterised the mesial root morphology of mandibular first molars with a middle mesial canal (MMC) using micro‐CT. Among 469 scanned molars, 42 (8.96%) presented an MMC. Morphological parameters analysed included canal configuration, chamber orifice features, dentine thickness, isthmus type, and aspect ratio.
Nuno Rodrigues dos Santos   +3 more
wiley   +1 more source

The dynamics of a new chaotic system through the Caputo–Fabrizio and Atanagan–Baleanu fractional operators

open access: yesAdvances in Mechanical Engineering, 2019
The aim of this article is to analyze the dynamics of the new chaotic system in the sense of two fractional operators, that is, the Caputo–Fabrizio and the Atangana–Baleanu derivatives.
Muhammad Altaf Khan
doaj   +1 more source

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