Results 31 to 40 of about 166,985,766 (118)
The stability analysis of systems with nonlinear feedback expressed by a quadratic program [PDF]
, 2006 We consider the stability of the feedback connection of a stable linear time invariant (LTI) plant with a static nonlinearity expressed by a certain class of quadratic program (QP).
Lennox, B +5 more
core +1 more source
Soil Science Society of America Journal, Volume 90, Issue 1, January/February 2026.Abstract This paper establishes standardized terminology and field documentation protocols for cryostructures and cryogenic soil structures in permafrost‐affected soils and provides brief guidance on descriptions of ground ice morphology and ice volume estimates.
Megan L. Andersen +8 more
wiley +1 more source
IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.This paper proposes a hybrid sensorless control strategy for a permanent magnet synchronous generator (PMSG)‐based wind energy conversion system (WECS). The approach integrates finite‐set predictive current control (FS‐PCC), a model reference adaptive system (MRAS) estimator and an optimal torque control maximum power point tracking (MPPT‐OTC) method ...
Hicham Sayhi +7 more
wiley +1 more source
IET Power Electronics, Volume 19, Issue 1, January/December 2026.Model Predictive Direct Speed Control (MPDSC), which directly optimizes the rotor speed based on a predictive model, exhibits significantly superior overall performance compared with traditional cascaded controller. This paper presents the first systematic review of MPDSC methods for PMSMs.
Hao Fan +4 more
wiley +1 more source
Health &Social Care in the Community, Volume 2026, Issue 1, 2026.This study aims to examine the mental risk‐taking skills of Turkish Grade 8 students in mathematics learning, with particular attention to gender differences and the demands of 21st‐century competencies. Drawing directly on qualitative data, the study develops a mental risk‐taking filter model to explain how students’ mathematical task selection is ...
Belgin Bal İncebacak +2 more
wiley +1 more source
A generalisation of the nonlinear small-gain theorem for systems with abstract initial conditions
, 2013 We consider the development of a general nonlinear small-gain theorem for systems with abstract initial conditions. Systems are defined in a set theoretic manner from input-output pairs on a doubly infinite time axis, and a general construction of the ...
Jing Liu +3 more
core +2 more sources
Toward Scientific Clarity in the Evolutionary Puzzle of Austropotamobius Crayfish
Journal of Biogeography, Volume 52, Issue 11, November 2025.ABSTRACT Aim Illuminating the evolutionary history of Austropotamobius crayfish by uncovering patterns of biodiversity and biogeographical processes, thereby providing a foundation for accurate taxonomy and targeted conservation strategies. Location Europe. Time Period Miocene to present. Major Taxa Studied The crayfish genus Austropotamobius.
Lucian Pârvulescu +14 more
wiley +1 more source
A flexible, allosteric loop regulates protein activity and rewires electrostatics
Protein Science, Volume 34, Issue 10, October 2025.Abstract Allostery is a key driver of protein function and behavior in biological systems. Historically, allosteric regulation has been attributed to conformational and dynamic changes, mostly derived from well‐structured regions of proteins. While the regulatory contributions of specific unstructured elements, such as catalytic loops near the active ...
Darex J. Vera‐Rodríguez +3 more
wiley +1 more source
The Recriminalization of Homosexuality under Stalin: New Sources, New Answers
The Russian Review, Volume 84, Issue 4, Page 660-680, October 2025.Abstract Drawing on newly uncovered archival and printed sources, this article offers a fresh perspective on the recriminalization of homosexuality under Stalin by challenging key assumptions in existing historiography. It demonstrates that the OGPU did not actively advocate for new anti‐sodomy legislation. Although Leningrad homosexuals had been under
Irina Roldugina
wiley +1 more source
A Reassessment of the Coprostane Biomarker in the Ediacaran With Implications for Dickinsonia
Geobiology, Volume 23, Issue 4, July/August 2025.ABSTRACT The discovery of cholestane in animal fossils from the Ediacaran (571–541 million years ago) has generated much excitement, but it is not the only interesting biomarker recovered. Coprostane, a geologically stable form of coprostanol, has also been found in Ediacaran rocks.
Christopher Mulligan, David A. Gold
wiley +1 more source