Results 1 to 10 of about 1,487 (218)

Viscoelastic damping design – Thermal impact on a constrained layer damping treatment

open access: yesMaterials & Design, 2021
Constrained layer damping treatments have been commonly used for vibration damping. The included viscoelastic material exhibits high damping potential that is retrieved under shear deformation.
Martin Gröhlich   +3 more
doaj   +1 more source

Rate Adaptive Autoencoder-based Geometric Constellation Shaping

open access: yesCLEO 2023, 2023
An autoencoder is used to optimize bit-to-symbol mappings for geometric constellation shaping. The mappings allow for net rate adaptivity without additional hardware complexity, while achieving up to 300km of transmission distance compared to uniform QAM.
Jovanovic, Ognjen; id_orcid 0000-0002-2864-679X   +3 more
openaire   +3 more sources

Rate-Adaptive Coded Modulation with Geometrically-shaped Constellations [PDF]

open access: yes2018 Asia Communications and Photonics Conference (ACP), 2018
Information-theoretic metrics are used to design rate-adaptive coded modulation based on geometrically-shaped constellations with soft- and hard-decision FEC. Numerical results show that an 8% reach extension can be achieved with flexible data rates and transmission distances.
Chen, Bin   +4 more
openaire   +2 more sources

Modern Surfboards and Their Structural Characterization: Towards an Engineering Approach

open access: yesProceedings, 2020
Recently, manufactures who produce surfboards using computer aided design and robotic (CNC) shaping tools have gained a larger share of the surfing market, allowing board producers and shapers to produce lighter and more durable boards.
Luca Oggiano, Marc in het Panhuis
doaj   +1 more source

Rate adaptive geometric constellation shaping using autoencoders and many-to-one mapping

open access: yesIET Conference Proceedings, 2023
A many-to-one mapping geometric constellation shaping scheme is proposed with a fixed modulation format, fixed FEC engine and rate adaptation with an arbitrarily small step. An autoencoder is used to optimize the labelings and constellation points' positions.
Yankov, Metodi P.   +3 more
openaire   +2 more sources

Geometrical Segmentation of Multi-Shape Point Clouds Based on Adaptive Shape Prediction and Hybrid Voting RANSAC

open access: yesRemote Sensing, 2022
This work proposes the use of a robust geometrical segmentation algorithm to detect inherent shapes from dense point clouds. The points are first divided into voxels based on their connectivity and normal consistency. Then, the voxels are classified into different types of shapes through a multi-scale prediction algorithm and multiple shapes including ...
Bo Xu 0003   +7 more
openaire   +2 more sources

An Optimal Adaptive Constellation Design Utilizing an Autoencoder-Based Geometric Shaping Model Framework

open access: yesPhotonics, 2023
Since visible-light communication (VLC) has become an increasingly promising candidate for 6G, the field of underwater visible-light communication (UVLC) has also garnered significant attention. However, the impairments introduced by practical systems and the time-varying underwater channels always limit the performance of underwater visible-light ...
Yuan Wei   +5 more
openaire   +2 more sources

Deriving vocal tract shapes from electromagnetic articulograph data via geometric adaptation and matching [PDF]

open access: yesInterspeech 2009, 2009
In this paper, we present our efforts towards deriving vocal tract shapes from ElectroMagnetic Articulograph data (EMA) via geometric adaptation and matching. We describe a novel approach for adapting Maeda’s geometric model of the vocal tract to one speaker in the MOCHA database. We show how we can rely solely on the EMA data for adaptation.
Ziad Al Bawab   +3 more
openaire   +2 more sources

Tooth Shape Adaptations in Aglyphous Colubrid Snakes Inferred from 3D Geometric Morphometrics and Finite Element Analysis [PDF]

open access: yesZoological Journal of the Linnean Society, 2019
Abstract To date there are few detailed and quantitative studies investigating the evolution of the tooth shape and function in Aglyphous snakes in relation to diet. To study dental adaptations to diet, a lineage that is of particular interest due to its large range of adult body sizes, is the one including dwarfed ...
Rajabizadeh, Mahdi   +4 more
openaire   +5 more sources

The measures of the castle San Felice a Cancello

open access: yesDisegnare con, 2015
 Geometric logic characterizes the function and standard structure of the castles built under Frederick II: a square form with four square towers inserted at the summit.
Adriana Rossi
doaj  

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