Results 91 to 100 of about 14,095,782 (306)

Some Constructions for Amicable Orthogonal Designs [PDF]

open access: yesAustralas. J Comb., 2015
Hadamard matrices, orthogonal designs and amicable orthogonal designs have a number of applications in coding theory, cryptography, wireless network communication and so on. Product designs were introduced by Robinson in order to construct orthogonal designs especially full orthogonal designs (no zero entries) with maximum number of variables for some ...
openaire   +3 more sources

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

Application of artificial neural network on optimal technology of monascus waxberry wine

open access: yes浙江大学学报. 农业与生命科学版, 2003
Artificial neural network combined with traditional orthogonal design constitute the basis on which a new method of test data analyzing and processing was put forward.
JIANG Yi-hong, SHENG Yi-ming
doaj   +1 more source

Structural Optimization and Test of Nozzle for Coal Seam Slotting

open access: yesMeikuang Anquan, 2020
Technology of slotting and improving coal seam permeability with high pressure water jet is an effective method to improve gas exhausting rate, where the nozzle is the actuator of the cutting.
SHEN Huajian
doaj   +1 more source

On Sequences with Zero Autocorrelation and Orthogonal Designs

open access: yesJournal of Combinatorial Theory, Series A, 2001
An orthogonal design of order \(n\) and type \((s_1, s_2,\dots, s_n)\) \((s_i> 0)\), denoted \(\text{OD}(n; s_1,s_2,\dots, s_n)\), on the commuting variables \(x_1,x_2,\dots, x_n\) is an \(n\times n\) matrix \(A\) with entries in \(\{0,\pm x_1,\dots,\pm x_n\}\) such that \[ AA^T= \Biggl(\sum^n_{i=1} s_i x^2_i\Biggr) I_n.
Stelios Georgiou, Christos Koukouvinos
openaire   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

On Designs with Pencilwise Orthogonality and Balance

open access: yesElectronic Notes in Discrete Mathematics, 2003
Suppose we have a factorial experiment with m factors where the ith factor has Si levels, i = 1, 2,…, m. The v = mIIi=1 Si level combinations laid out in a v × b block design D with block sizes k1, k2,…, kb and replications ri,r2,…, rv. The C-matrix for the design is given by C = rδ−Nk−δN1 (1) where rδ =diag(r1,r2,…,rv) k−δ=diag(k−11, k−11 ...
openaire   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang   +10 more
wiley   +1 more source

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