Results 21 to 30 of about 26,581 (261)

Forward and inverse design of kirigami via supervised autoencoder

open access: yesPhysical Review Research, 2020
Machine learning (ML) methods have recently been used as forward solvers to predict the mechanical properties of composite materials. Here, we use a supervised autoencoder (SAE) to perform the inverse design of graphene kirigami, where predicting the ...
Paul Z. Hanakata   +3 more
doaj   +1 more source

Orthogonal Genetic Algorithm for Planar Thinned Array Designs

open access: yesInternational Journal of Antennas and Propagation, 2012
An orthogonal genetic algorithm (OGA) is applied to optimize the planar thinned array with a minimum peak sidelobe level. The method is a genetic algorithm based on orthogonal design.
Li Zhang   +3 more
doaj   +1 more source

Binary (k, k)-Designs

open access: yesMathematics, 2020
We introduce and investigate binary (k,k)-designs, a special case of T-designs. Our combinatorial interpretation relates (k,k)-designs to the binary orthogonal arrays.
Todorka Alexandrova   +2 more
doaj   +1 more source

Design of Incidence Matrices With Limited Constellation Expansion in Massive Connectivity NOMA Systems

open access: yesIEEE Access, 2023
Non-orthogonal multiple-access (NOMA) is designed to transmit massive amounts of user communications. The incidence matrix manages the relationship between users and resources. This study focused on increasing user supportability and complexity reduction
Eli Hwang, Xing Hao, Guillermo E. Atkin
doaj   +1 more source

Space-Time Codes for Wireless Optical Communications

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
A space-time channel coding technique is presented for overcoming turbulence-induced fading in an atmospheric optical heterodyne communication system that uses multiple transmit and receive apertures. In particular, a design criterion for minimizing the
Tarokh Vahid   +2 more
doaj   +1 more source

Generating Improved Experimental Designs with Spatially and Genetically Correlated Observations Using Mixed Models

open access: yesAgronomy, 2018
The aim of this study was to generate and evaluate the efficiency of improved field experiments while simultaneously accounting for spatial correlations and different levels of genetic relatedness using a mixed models framework for orthogonal and non ...
Lazarus K. Mramba   +3 more
doaj   +1 more source

Being Uncertain in Chromatographic Calibration—Some Unobvious Details in Experimental Design

open access: yesMolecules, 2021
This is an introductory tutorial and review about the uncertainty problem in chromatographic calibration. It emphasizes some unobvious, but important details influencing errors in the calibration curve estimation, uncertainty in prediction, as well as ...
Łukasz Komsta   +2 more
doaj   +1 more source

Full-Rate Full-Diversity Linear Quasi-Orthogonal Space-Time Codes for Any Number of Transmit Antennas

open access: yesEURASIP Journal on Advances in Signal Processing, 2004
We construct a class of linear quasi-orthogonal space-time block codes that achieve full diversity over quasistatic fading channels for any transmit antennas. These codes achieve a normalized rate of one symbol per channel use. Constellation rotation is
Papadias Constantinos B, Sharma Naresh
doaj   +1 more source

Design Efficiency of the Asymmetric Minimum Projection Uniform Designs

open access: yesMathematics, 2023
Highly efficient designs and uniform designs are widely applied in many fields because of their good properties. The purpose of this paper is to study the issue of design efficiency for asymmetric minimum projection uniform designs. Based on the centered
Qiming Bai   +3 more
doaj   +1 more source

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