Results 31 to 40 of about 727 (181)

Global Stabilization of Nonlinear Networked Control System with System Delays and Packet Dropouts via Dynamic Output Feedback Controller

open access: yesMathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015
The stabilization problem is investigated for a class of nonlinear discrete‐time networked control systems (NCSs). Nonideal network Quality of Services (QoS) are considered, more specifically data packet dropouts and network‐induced delays. A state feedback controller for a class of NCSs is proposed.
Kheir Eddine Bouazza, Giacomo Innocenti
wiley   +1 more source

Advanced Optimization Models for Bandwidth Provisioning and Routing in Fixed Microwave Backhaul Networks

open access: yesTransport and Telecommunication
This paper addresses the problem of determining bandwidth allocation and traffic routes in fixed microwave networks such that overall bandwidth cost is minimized while traffic demands are satisfied with a required reliability level.
Mehadji Djamil Abdelhak, Kaddour Mejdi
doaj   +1 more source

Operando Structural Rearrangement of Self‐Ion‐Implanted Germanium Films Enables High‐Rate Cycling in Lithium‐Ion Batteries

open access: yesphysica status solidi (a), Volume 223, Issue 7, 7 April 2026.
Nanostructured germanium thin‐film negative electrodes are produced by combining PECVD deposition with self‐ion implantation, enabling battery fabrication fully compatible with semiconductor processing workflows and without material removal. The resulting porous structure dynamically rearranges during high‐rate cycling, leading to improved rate ...
Valentina Diolaiti   +13 more
wiley   +1 more source

On X‐valued sequence spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 20, Issue 1, Page 47-50, 1997., 1995
Certain spaces of X‐valued sequences are introduced and some of their properties are investigated. Köthe‐ Toeplitz duals of these spaces are examined.
S. Pehlivan
wiley   +1 more source

Dicotomías técnicas para la "inevitabilidad" de la extracción de litio en América Latina

open access: yesRevista Kawsaypacha
A partir del año 2015, aumentó considerablemente la demanda y el precio del litio debido a su rol central en la producción de baterías. América Latina posee alrededor del 60% de las reservas de litio a nivel mundial.
Guillermo Folguera
doaj   +1 more source

Optimizing the Capacity of Cognitive Radio Networks with Power Control and Variable Spectrum Allocation

open access: yesTransport and Telecommunication, 2018
Cognitive Radio Networks (CRN) were introduced as a means to more efficiently reuse the licensed radio frequency spectrum. One of their salient features is the ability of unlicensed nodes to dynamically adapt their radio parameters according to their ...
Benghabrit Nawel, Kaddour Mejdi
doaj   +1 more source

Acute Supplementation of Beta‐Hydroxybutyrate Increases Visual Cortical Excitability in Humans: A Combined Electro‐EncephaloGraphy and Magnetic Resonance Spectroscopy Study

open access: yesEuropean Journal of Neuroscience, Volume 62, Issue 7, October 2025.
Elevated plasma β‐hydroxybutyrate levels achieved by acute supplementation increased occipital glutamate (but not GABA+) levels and enhanced visual cortical excitability, as measured by larger steady‐state visual evoked potentials. The glutamate increase correlated with the increased steady‐state visual evoked potentials amplitude.
Cecilia Steinwurzel   +6 more
wiley   +1 more source

An application of the Sakai′s theorem to the characterization of H*‐algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 18, Issue 2, Page 317-322, 1995., 1995
The well‐known Sakai′s theorem, which states that every derivation acting on a von Neumann algebra is inner, is ,used to obtain a new elegant proof of the Saworotnow′s characterization theorem for associative H*‐algebras via two‐sided H*‐algebras. This proof completely avoids structure theory.
Borut Zalar
wiley   +1 more source

Mapping and monitoring spatiotemporal desertification patterns in the arid transition zone of Algeria over the period 2002–2022

open access: yesInternational Journal of Applied Earth Observations and Geoinformation
Desertification represents a critical threat to ecosystems, agriculture, and livelihoods in arid and semi-arid regions. This study provides a comprehensive analysis of the spatio-temporal evolution of desertification across Algeria’s steppic and northern
Amel Faiza Tandjaoui   +4 more
doaj   +1 more source

Facile Solid‐State Synthesis of Prelithiated LiTiO2 With Nitrogen‐Doped Carbon for Lithium‐Ion Battery Anodes

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
Although Ti‐based oxides are attractive anode materials for Li‐ion batteries (LIBs) owing to their inherent stability and enhanced safety, their electrochemical performance is severely limited by low conductivity and slow Li‐ion diffusion. Conventional LiTiO2 synthesis methods are not cost‐effective because they rely on high‐purity precursors and ...
Duk-Hee Lee   +5 more
wiley   +1 more source

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