Results 141 to 150 of about 2,421,736 (347)

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg   +5 more
wiley   +1 more source

Spin-3/2 Ising model on a two-layer Bethe lattice with FM/AFM interactions

open access: yesCondensed Matter Physics, 2009
Two-layer Bethe lattice whose lattice sites are occupied with spin-3/2 atoms is solved exactly by using the recursion relations in a pairwise approach for given coordination numbers q=3,4 and 6 with equal external magnetic fields acting on the layers ...
E. Albayrak, A. Yigit
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Elinvar Materials: Recent Progress and Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

MODELO PARA EL DESARROLLO DEL POTENCIAL HUMANO BASADO EN COMPETENCIAS PARA EL DESARROLLO DE LA ACTIVIDAD EMPRESARIAL, EN LA POBLACIÓN VULNERABLE DE SANTIAGO DE CALI

open access: yesEntramado, 2010
El artículo es producto de la investigación "Modelo de gestión del potencial humano, basado en competencias, para el desarrollo de la actividad empresarial, en la población vulnerable de Santiago de Cali".
Luis Fernando Parra Villanueva
doaj  

Molecular Engineering of Emissive Molecular Qubits Based on Spin-Correlated Radical Pairs [PDF]

open access: gold
Neo Lin   +8 more
openalex   +1 more source

Manufacturing Continuous Fiber‐Reinforced Printing Filaments: Development of a Post‐Consolidation Unit

open access: yesAdvanced Engineering Materials, EarlyView.
A novel, temperature‐controlled post‐consolidation unit is developed to test its potential to improve the melt impregnation process used to manufacture continuous fiber‐reinforced filaments for additive manufacturing of high‐performance thermoplastics.
Daniel Beermann   +2 more
wiley   +1 more source

An Exact Schedulability Test for Real-Time Systems with Abstract Scheduler on Multiprocessor Platforms

open access: yesМоделирование и анализ информационных систем
This paper uses the model checking method for an exact schedulability test of real-time systems running on multiprocessor platforms. To use this method, we formally describe real-time systems with an abstract scheduler as Kripke models.
Natalia O. Garanina
doaj   +1 more source

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