Results 71 to 80 of about 9,248,795 (284)

Target Tracking in Clutter with Extremum Seeking Control for Adaptive Detection Thresholding

open access: yesSensors, 2019
If the signal strength obtained from sonar is higher than the predefined detection threshold, it is considered as a candidate for target tracking.
Seung Hyo Park, Taek Lyul Song
doaj   +1 more source

Additively Manufactured Geometry‐Reconfigurable Soft Neural Probes With Monolithic Multifunctionality

open access: yesAdvanced Functional Materials, EarlyView.
A geometry‐reconfigured additive manufacturing strategy converts planar printed soft materials into soft compact neural probes with integrated hydrogel electrodes and microfluidic channels. The resulting NeuroMAP platform enables scalable multichannel recording, localized chemical delivery, stable in vivo electrophysiological recording, and reduced ...
Hyunjin Lee   +15 more
wiley   +1 more source

Fractional Brownian motion in a finite interval: correlations effect depletion or accretion zones of particles near boundaries

open access: yesNew Journal of Physics, 2019
Fractional Brownian motion (FBM) is a Gaussian stochastic process with stationary, long-time correlated increments and is frequently used to model anomalous diffusion processes.
T Guggenberger   +3 more
doaj   +1 more source

Characteristics of ionospheric scintillation climatology over Indian low-latitude region during the 24th solar maximum period

open access: yesGeodesy and Geodynamics, 2019
The amplitude and phase of L-band satellite signals are fluctuated randomly due to small scale electron density irregularity structures in the ionosphere which result in fleeting variations, known as ‘ionospheric scintillations’.
K. Sahithi   +6 more
doaj   +1 more source

Probability density functions for the amplitude of signals received from cw sources towed at long ranges in the deep ocean [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1976
The characteristics of the probability density functions for the cw tow data of the previous paper are discussed. Theoretical density functions which best fit the data and their physical interpretation are presented. The properties of the corresponding log transformed density functions are also discussed.
G. V. Frisk   +3 more
openaire   +1 more source

Stabilization of Strongly Reduced Fe(I) Single Atom Species Coordinated in a 2D Self‐Assembled Metal–Organic Network

open access: yesAdvanced Functional Materials, EarlyView.
A graphene‐supported 2D metal–organic network stabilizes highly reactive Fe(I)‐N4 single sites through Co‐induced charge redistribution. Combined experiments and theory reveal Fe(I) formation, oxygen‐driven oxidation, and O2 activation mechanisms, offering a strategy to access low‐valent iron centers relevant to catalytic and biological processes ...
Alessandro Namar   +9 more
wiley   +1 more source

Atomic‐Scale Visualization of Topotactic Resistive Switching in Epitaxial La0.5Sr0.5CoOx Neuromorphic Memristors

open access: yesAdvanced Functional Materials, EarlyView.
Forming‐free epitaxial Pt/La0.5Sr0.5CoOx (LSCO)/La0.5Sr0.5MnO3 (LSMO) memristors exhibit heterogeneous and partially reversible topotactic switching involving brownmillerite (BM)‐, Grenier (GN)‐like‐, and perovskite (PV)‐like configurations. Atomic‐resolution scanning transmission electron microscopy and in situ transmission electron microscopy resolve
Zi‐Qin Hong   +5 more
wiley   +1 more source

Nitrospinics: Nitride Materials for Spin‐Orbit and Orbital Torques From Memory to Artificial Intelligence

open access: yesAdvanced Functional Materials, EarlyView.
Further advances in applications can be anticipated through the development of unique and functional materials beyond conventional alloys. Nitrogen enables tailor‐made orbital textures in various transition‐metal hosts, paving the way for devices ranging from spintronics memory to artificial intelligence hardware.
Prabhat Kumar   +3 more
wiley   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park   +7 more
wiley   +1 more source

Polynomial Fitting-Based Model for Tails of Radar Clutter Amplitude Distribution [PDF]

open access: yesHangkong bingqi
When high-resolution radar detected complex scenarios such as low-altitude and sea surfaces, the clutter amplitude distribution exhibited significant heavy-tailed characteristics.
Yang Boyu, Yang Yong, Li Yongzhen, Cai Weike
doaj   +1 more source

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