Results 61 to 70 of about 1,065,609 (199)

Sliding Mode Control in Aerospace Applications: A Survey

International 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

Effects of Thermal Stratification and Anisotropic Porous Material in a Symmetrically Heated Vertical Channel

Sultan Qaboos University Journal for Science
The coexistence in nature of thermally stratified fluids and directionally inclined porous structures abound in geophysical fluid flow. Despite their important applications especially in underground flow, their combined effects on natural convection have
Basant K. Jha, Muhammad K. Musa, Abiodun O. Ajibade   +2 more
doaj   +1 more source

Theoretical analysis of transient natural convection flow in a vertical microchannel with electrokinetic effect

Journal of Taibah University for Science, 2019
In this article, a theoretical analysis is carried out to understand the role of electrokinetic effect on transient natural convection flow in a vertical microchannel.
Michael O. Oni, Basant K. Jha
doaj   +1 more source

Refining effect size measures and classification for differential item functioning: Toward unified guidelines across methods

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Differential Item Functioning (DIF) analysis is used to identify potentially biased items in multi‐item measurements. In addition to testing the statistical significance, it is essential to evaluate the practical significance of DIF through effect size measures.
Michaela Cichrová, Adéla Hladká, Patrícia Martinková   +2 more
wiley   +1 more source

Real‐Time Conformal Maps and Parameterizations

Computer Graphics Forum, EarlyView.
Abstract We present a simple algorithm to conformally map between two simple and bounded planar domains based on the concept of harmonic measure, which is a conformal invariant. With suitable preprocessing, the algorithm is fast enough to compute all possible conformal maps (having three real degrees of freedom) between the two domains in real time in
Q. Chang, C. Gotsman, K. Hormann
wiley   +1 more source

Contrasting Food Web Dynamics Across Oceanographic Boundaries in Subarctic Pelagic Ecosystems

Fisheries Oceanography, EarlyView.
ABSTRACT Understanding the structure of pelagic food webs across multiple trophic levels is critical for elucidating species interactions, energy flow, and anthropogenic impacts on production. This study presents a comprehensive analysis of the eastern North Pacific pelagic food webs, focusing on the Gulf of Alaska (GoA) during late winter of 2019.
Genyffer C. Troina, Evgeny A. Pakhomov, Laurie Weitkamp, Brian P. V. Hunt   +3 more
wiley   +1 more source

Governing Marginality Through Crime: The Cameron Government's ‘Thug State’ Responses to the August 2011 English Riots

International Social Science Journal, EarlyView.
ABSTRACT This article examines the British government's response to the August 2011 English riots through the lens of state crime, drawing on Richards and Avery's ‘Thug State’ concept. It addresses the relative neglect of the state's response itself as a potential form of criminality and social harm.
Monia O'Brien Castro
wiley   +1 more source

Contingent capital: A tale of two valuations

Journal of Risk and Insurance, EarlyView.
Abstract This study investigates the valuation gap between buyers and sellers of insurers' contingent capital, driven by asymmetric exposures to tax benefits, capital injections, and bankruptcy costs. We develop a novel Twin‐Tree Model with Jumps (TTMJ) that models the insurer's asset value dynamics by incorporating catastrophe risk, insolvency risk ...
Tian‐Shyr Dai, Chien‐Ling Lo, You‐Jia Sun, Hao‐Han Chang   +3 more
wiley   +1 more source

The futuristic manifolds of REM sleep

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Since one of its first descriptions 70 years ago, rapid eye movement sleep has continually inspired and excited new generations of sleep researchers. Despite significant advancements in understanding its neurocircuitry, underlying mechanisms and microstates, many questions regarding its function, especially beyond the early neurodevelopment ...
Liborio Parrino, Ivana Rosenzweig
wiley   +1 more source

The role of funnels and punctures in the Gromov hyperbolicity of Riemann surfaces [PDF]

, 2006
27 pages, no figures.-- MSC2000 codes: 30F20, 30F45.MR#: MR2243795 (2007e:30063)Zbl#: Zbl 1108.30031We prove results on geodesic metric spaces which guarantee that some spaces are not hyperbolic in the Gromov sense.
Tourís, Eva, Rodríguez, José M., Portilla, Ana   +2 more
core   +1 more source