Results 31 to 40 of about 117,447 (292)

Complex Nanowrinkling in Chiral Liquid Crystal Surfaces: From Shaping Mechanisms to Geometric Statistics

open access: yesNanomaterials, 2022
Surface wrinkling is closely linked to a significant number of surface functionalities such as wetting, structural colour, tribology, frictions, biological growth and more.
Ziheng Wang   +2 more
doaj   +1 more source

Constellation Shaping for WDM systems using 256QAM/1024QAM with Probabilistic Optimization [PDF]

open access: yes, 2016
In this paper, probabilistic shaping is numerically and experimentally investigated for increasing the transmission reach of wavelength division multiplexed (WDM) optical communication system employing quadrature amplitude modulation (QAM).
Da Ros, Francesco   +7 more
core   +2 more sources

Interpretation of geometric shapes [PDF]

open access: yesProceedings of the 2010 Symposium on Eye-Tracking Research & Applications - ETRA '10, 2010
This paper describes the first in a series of studies which seek to explore the correlation of eye movements with interpretation of geometric shapes. These studies are intended to inform the development of an eye tracking interface for computational tools to support and enhance the fluid interaction required in creative design.
Prats, Miquel   +4 more
openaire   +1 more source

Geometric shaping of chosen two-layered bar domes

open access: yesBudownictwo i Architektura, 2014
The covering of large areas, such as sport areas, trade halls, warehouses and others, may be designed by using forms of spherical domes. Such constructions, especially bars ones, have undoubtedly big superiority in comparison to other structures, thanks ...
Dominika Pilarska
doaj   +1 more source

Berry phase of light Bragg-reflected by chiral liquid crystal media [PDF]

open access: yes, 2016
Berry phase is revealed for circularly polarized light when it is Bragg-reflected by a chiral liquid crystal medium of the same handedness. By using a chiral nematic layer we demonstrate that if the input plane of the layer is rotated with respect to a ...
Barboza, Raouf   +3 more
core   +2 more sources

Comparison of Geometrically Shaped and Probabilistically Shaped Bit-Loading DMT for Optical Interconnect System

open access: yesIEEE Photonics Journal, 2020
We experimentally demonstrate the transmission performance of the bit-loading discrete multi-tone (DMT) signal in intensity modulation and direct detection (IM-DD) system with a transmission distance of 2km and a net data rate of 108-Gb/s by two ...
Junjie Ding, Jiao Zhang, Jianjun Yu
doaj   +1 more source

Evaluation of Input Shaping Methods for the Nonlinear Vibration System Using a Furuta Pendulum [PDF]

open access: yes한국정밀공학회지, 2020
There are many nonlinear vibration problems of mechanical structures because of various reasons such as geometric parameters, impact loads, or property of materials.
Anh-Duc Pham, Hyeong-Joon Ahn
doaj   +1 more source

Controlling Tokamak Geometry with 3D Magnetic Perturbations

open access: yes, 2014
It is shown that small externally applied magnetic perturbations can significantly alter important geometric properties of magnetic flux surfaces in tokamaks.
Bird, Thomas M, Hegna, Chris C
core   +1 more source

Phase Uniformly Distributed Circular MQAM Combined With Probabilistic Shaping for PM-CO-OFDM Systems in Satellite-to-Ground Optical Communications

open access: yesIEEE Photonics Journal, 2019
Due to the rapid growth of high-resolution services, low earth orbit satellite-to-ground (LEO-StG) optical communications are expected to provide higher speed and better receiver sensitivity transmission.
Huan Chen   +5 more
doaj   +1 more source

Golden Angle Modulation in Complex Dimension Two

open access: yesMathematics
In this paper, we propose a new geometric-shaping design for golden angle modulation (GAM) based on the complex geometric properties of open symmetrized bidisc, termed Bd-GAM, for future generation wireless communication systems.
Kejia Hu, Hongyi Li, Di Zhao, Yuan Jiang
doaj   +1 more source

Home - About - Disclaimer - Privacy