Results 91 to 100 of about 436,980 (282)
Spectrum Allocation for Multiuser Terahertz Communication Systems: A Machine Learning Approach
IEEE Open Journal of the Communications SocietyIn this paper, we propose a novel spectrum allocation design, leveraging machine learning, for multiuser communication systems operating at the terahertz (THz) band.
Akram Shafie +4 more
doaj +1 more source
Improved spectrum allocation scheme for TV white space networks using a hybrid of firefly, genetic, and ant colony optimization algorithms. [PDF]
Heliyon, 2023 Mach JB, Ronoh KK, Langat K.
europepmc +1 more source
Spectrum Allocation in Latin America: An Economic Analysis
SSRN Electronic Journal, 2006 Like elsewhere in the developing world, wireless markets now play a crucial role in Latin American economic growth. Mobile telephone networks increasingly provide the communications infrastructure that has largely been lacking throughout the region. Yet, governments have generally made only modest allocations of bandwidth available to Latin American ...
Hazlett, Thomas W., Munoz, Roberto E.
openaire +3 more sources
Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
Spectrum Allocation, Spectrum Commons and Public Goods: the Role of the Market [PDF]
The reallocation of radio spectrum to valuable new and emerging technologies and services is essential to achieving the next wave of productivity and consumer benefits driven by ICT.
Marks, Brian, Marks, Phillipa
core +1 more source
Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons
Advanced Materials, EarlyView.Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner +9 more
wiley +1 more source
Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix
Advanced Materials, EarlyView.3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández +15 more
wiley +1 more source
Compressive Wideband Spectrum Sensing for Fixed Frequency Spectrum Allocation
, 2010 Too high sampling rate is the bottleneck to wideband spectrum sensing for cognitive radio (CR). As the survey shows that the sensed signal has a sparse representation in frequency domain in the mass, compressed sensing (CS) can be used to transfer the sampling burden to the digital signal processor. An analog to information converter (AIC) can randomly
Liu, Yipeng, Wan, Qun
openaire +2 more sources
Advanced Materials Interfaces, EarlyView.In situ SAXS/WAXS enables real‐time tracking of nanoparticle formation and evolution in exsolved and infiltrated Ni‐based perovskites under reducing conditions. The combined technique captures nucleation, growth, and coarsening dynamics with high temporal resolution, providing statistically robust insights into structural and morphological ...
Elena Vicente +4 more
wiley +1 more source
Phonon Engineering in Ultrathin Sn Films
Advanced Materials Interfaces, EarlyView.When embedded in multilayer structures, ultrathin Sn layers demonstrate strongly modified vibrational density of states (VDOS). This allows engineering a drastic increase of the Lamb‐Mössbauer factor fLM$f_{\text{LM}}$ and thereby of the cross‐section for coherent excitation of the ultrasharp nuclear resonance of 119Sn$^{119}{\rm Sn}$. This enables the
Sven Velten +9 more
wiley +1 more source