Results 41 to 50 of about 1,045,016 (325)

Pure-quartic solitons

open access: yesNature Communications, 2016
Optical solitons are pulses that propagate undistorted. Here, the authors demonstrate a class of soliton arising from the interaction of self-phase modulation with quartic dispersion, rather than with quadratic dispersion as occurs in conventional ...
Andrea Blanco-Redondo   +5 more
doaj   +1 more source

In-Robot Network Architectures for Humanoid Robots With Human Sensor and Motor Functions

open access: yesIEEE Access, 2021
The design concepts of the in-robot network (IRN) architectures of humanoid robots are proposed in this paper. First, this paper reveals the network requirements for humanoid robots to realize perception abilities and action execution abilities near ...
Chengyu Cui, Sungkwon Park
doaj   +1 more source

The eleven antenna: a compact low-profile decade bandwidth dual polarized feed for reflector antennas [PDF]

open access: yes, 2006
A novel dual polarized ultrawide-band (UWB) feed with a decade bandwidth is presented for use in both single and dual reflector antennas. The feed has nearly constant beam width and 11 dBi directivity over at least a decade bandwidth.
Kildal, Per-Simon   +2 more
core   +1 more source

Optical Yagi-Uda nanoantennas

open access: yesNanophotonics, 2012
Conventional antennas, which are widely employed to transmit radio and TV signals, can be used at optical frequencies as long as they are shrunk to nanometer-size dimensions.
Maksymov Ivan S.   +3 more
doaj   +1 more source

Call blocking probabilities for Poisson traffic under the Multiple Fractional Channel Reservation policy [PDF]

open access: yes, 2016
In this paper, we study the performance of the Multiple Fractional Channel Reservation (MFCR) policy, which is a bandwidth reservation policy that allows the reservation of real (not integer) number of channels in order to favor calls of high channel ...
Logothetis, Michael   +2 more
core   +2 more sources

Phase-locking in cascaded stimulated Brillouin scattering

open access: yesNew Journal of Physics, 2016
Cascaded stimulated Brillouin scattering is a complex nonlinear optical process that results in the generation of several optical waves that are frequency shifted by an acoustic resonance frequency.
Thomas F S Büttner   +4 more
doaj   +1 more source

Planar Microstrip Patch Antenna Arrays with Semi-elliptical Slotted Patch and ground Structure for 5G Broadband Communication Systems

open access: yesCogent Engineering, 2022
In fifth-generation (5G) communication systems, the mm-wave (millimeter-wave) frequency band is a key aspect in overcoming the exponential increase in data traffic of the existing cellular networks, which requires compatible and low-profile antenna ...
Ayane L. Goshu   +2 more
doaj   +1 more source

An adaptive quasi harmonic broadcasting scheme with optimal bandwidth requirement

open access: yes, 2014
The aim of Harmonic Broadcasting protocol is to reduce the bandwidth usage in video-on-demand service where a video is divided into some equal sized segments and every segment is repeatedly transmitted over a number of channels that follows harmonic ...
Afrin, Farzana   +1 more
core   +1 more source

Reduced Muscular Carnosine in Proximal Myotonic Myopathy—A Pilot 1H‐MRS Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Myotonic dystrophy type 2 (proximal myotonic myopathy, PROMM) is a progressive multisystem disorder with muscular symptoms (proximal weakness, pain, myotonia) and systemic manifestations such as diabetes mellitus, cataracts, and cardiac arrhythmias.
Alexander Gussew   +11 more
wiley   +1 more source

Ultrafast-laser-inscribed 3D integrated photonics: challenges and emerging applications

open access: yesNanophotonics, 2015
Since the discovery that tightly focused femtosecond laser pulses can induce a highly localised and permanent refractive index modification in a large number of transparent dielectrics, the technique of ultrafast laser inscription has ...
Gross S., Withford M. J.
doaj   +1 more source

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