Results 11 to 20 of about 500,786 (268)

Distribution Matching for Dimming Control in Visible-Light Region-of-Interest Signaling

open access: yesIEEE Photonics Journal, 2023
We propose a two-level dimmer based on binary distribution matching where a low-rate signal controls the output probability distribution of a high-rate bit sequence, which can be used in region-of-interest (RoI) signaling applications. To reduce the rate
Phuc Duc Nguyen   +5 more
doaj   +1 more source

Asymmetric Curvature Side-Polished Optical Fiber Coupler

open access: yesIEEE Photonics Journal, 2023
An optical fiber coupler composed of two side-polished fibers with different curvature is proposed. The live-fiber is polished with a typical radius of curvature of 0.25 m, while the branch-fiber is polished with a larger radius of curvature.
Takui Uematsu   +4 more
doaj   +1 more source

Optical-referenceless optical frequency counter with twelve-digit absolute accuracy

open access: yesScientific Reports, 2023
A simpler and more accurate measurement of absolute optical frequencies (AOFs) is very important for optical communications and navigation systems. To date, an optical reference has been needed for measuring AOFs with twelve-digit accuracy because of the
Atsushi Ishizawa   +4 more
doaj   +1 more source

Novel Wide-Range Frequency Offset Estimation and Compensation for Burst-mode CPFSK Upstream Signaling in TDM-Based Digital Coherent PON

open access: yesIEEE Photonics Journal, 2023
The burst-mode continuous phase frequency shift-keying (CPFSK) transmitter that combines a directly modulated laser diode, an electro absorption modulator and a semiconductor optical amplifier is attractive as a cost-effective transmitter for phase ...
Takuya Kanai   +4 more
doaj   +1 more source

Resource Allocation and Sharing Methodologies When Reconfigurable Intelligent Surfaces Meet Multiple Base Stations

open access: yesSensors, 2022
The 6G wireless systems are expected to have higher capacity, reliability, and energy efficiency than the existing cellular systems. Millimeter-wave (mmWave) frequencies offer high capacity at the cost of high attenuation and blockage losses ...
Yoghitha Ramamoorthi   +4 more
doaj   +1 more source

Distinct temporal developments of visual motion and position representations for multi-stream visuomotor coordination

open access: yesScientific Reports, 2019
A fundamental but controversial question in information coding of moving visual target is which of ‘motion’ or ‘position’ signal is employed in the brain for producing quick motor reactions.
Hiroshi Ueda   +3 more
doaj   +1 more source

Effect of a telephonic intervention on the adherence of patients

open access: yesSouth African Journal of Physiotherapy, 2003
The effectiveness of a telephonic intervention in increasingpatients’ adherence to a health behaviour modification programme was tested. Patients were randomly assigned to two groups, the Experimental group receiving the telephonic intervention. Patients
A. V. Stewart
doaj   +1 more source

The potential of alternatives to face-to-face consultation in general practice, and the impact on different patient groups: a mixed-methods case study

open access: yesHealth Services and Delivery Research, 2018
Background: There is international interest in the potential role of different forms of communication technology to provide an alternative to face-to-face consultations in health care.
Helen Atherton   +8 more
doaj   +1 more source

LAW ENFORCEMENT ANALYSIS REGULATIONS FOR USING TELEPHONE WHILE DRIVING AGAINST ONLINE OJEK IN BANDAR LAMPUNG

open access: yesIndonesia Private Law Review, 2021
Road users other than online public transportation must also be given legal protection and together enjoy the convenience of traffic facilities. Drivers are required to concentrate while driving a vehicle.
Rissa Afni Martinouva
doaj   +1 more source

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