Results 91 to 100 of about 169,109 (267)
On Segmented Predistortion for Linearization of RF Power Amplifiers [PDF]
Radioengineering, 2020 This paper presents a general survey of digital predistortion (DPD) techniques with segmentation. A comparison of global DPD with two segmented approaches namely Vector-Switched DPD and Decomposed Vector Rotation DPD is presented with the support of ...
G. Baudoin
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Advanced Science, EarlyView.This work provides a multifunctional programmable transmissive metasurface with phase and amplitude manipulation capability in the sub‐6G band. By applying different coding strategies, the proposed metasurface can realize vortex beam generation, holographic imaging under phase coding mode, and multi‐beam forming in phase‐amplitude joint coding mode ...
Hao Tian Shi +8 more
wiley +1 more source
AerospaceThe Thin-Plate Splines (TPS) technique, using Kybic et al.’s generalized interpolation approach, is extended to differentiable manifolds. The initial application to surface mesh deformation resulting from parameterized Computer Aided Design (CAD) used in
Gilbert Rogé, Ludovic Martin
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O dvou flexibilních metodách pro dvourozměrnou regresní analýzu [PDF]
ACC Journal, 2012 Práce je věnována neparametrickému statistickému modelování dvourozměrných ploch na základě pozorovaných dat, tj. dvourozměrně regresni analýze. Model je konstruován jako kombinace jednoduchých bázových funkcí, jako jsou spliny, gaussiány apod. Nevýhodou
Petr Volf
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Graellsia, 2003 Se evalúa la capacidad de modelos de interpolación de tres familias: superficies de tendencias, regresiones multiples con predictores derivados de un modelo digital del elevaciones (MDE) y kriging, para interpolar la temperatura en España peninsular. Los
J. Bustamante
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Rib‐Reinforced Ultralight and Ultra‐Strong Shell Lattices
Advanced Science, EarlyView.This study thoroughly reveals the relation between the curvature and stress direction of triply periodic minimal surface (TPMS) thin shell lattices and proposes a novel rib reinforcement design strategy to incorporate ribs along the line of asymptotes (LOA) and the line of principal curvatures (LOC) to enhance the strength of ultralight TPMS shell ...
Winston Wai Shing Ma +6 more
wiley +1 more source
Parametric Surfaces for Elliptic and Hyperbolic Geometries
MathematicsBackground/Objectives: In computer graphics, virtual worlds are constructed and visualized through algorithmic processes. These environments are typically populated with objects defined by mathematical models, traditionally based on Euclidean geometry ...
László Szirmay-Kalos +3 more
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Advanced Science, EarlyView.This study shows that amyloid fibrils form nematic condensates via liquid–liquid crystalline phase separation (LLCPS). With increasing pH, this transition shifts toward disordered condensates formed through liquid–liquid phase separation (LLPS), in which birefringence with lack of a coherent nematic field symmetry originates from enthalpic fibril ...
Milad Radiom, Raffaele Mezzenga
wiley +1 more source
The Instability in the Dimensions of Polynomial Splines of Mixed Smoothness over T-Meshes
MathematicsMixed-smoothness splines facilitate localized control over smoothness; however, the issue of dimensional instability in mixed-smoothness spline spaces remains unstudied in the existing literature.
Pengxiao Wang
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