Results 91 to 100 of about 464,771 (298)
The effect of standing waves on the attenuation constant for a low‐loss rectangular waveguide
Electronics Letters, 2021 When standing waves are present in a rectangular waveguide, the resistive losses in the walls are not uniformly distributed. This affects the measurement of the attenuation constant.
Richard J. Collier +2 more
doaj +1 more source
Acoustic spectral analysis and testing techniques [PDF]
, 1972 Subjects covered in four reports are described including: (1) mathematical techniques for combining decibel levels of octaves or constant bandwidth: (2) techniques for determining equation for power spectral density function; (3) computer program to ...
Hayes, C. D. +3 more
core +1 more source
Nonparametric Independence Screening via Favored Smoothing Bandwidth
, 2017 We propose a flexible nonparametric regression method for ultrahigh-dimensional data. As a first step, we propose a fast screening method based on the favored smoothing bandwidth of the marginal local constant regression.
Feng, Yang +2 more
core +1 more source
Design and characterization of optical-THz phase-matched traveling-wave photomixers [PDF]
, 1999 Design and characterization of optical-THz phase-matched traveling-wave photomixers for difference-frequency generation of THz waves are presented.
Blake, Geoffrey A. +6 more
core +1 more source
Advanced Functional Materials, EarlyView.Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley +1 more source
Spectrum Assignment with Non-Deterministic Bandwidth of Spectrum Holein Cognitive Radio Networks
MATEC Web of Conferences, 2016 The spectrum allocation for cognitive radio networks (CRNs) has received considerable studies under the assumption that the bandwidth of spectrum holes is static.
Huang Jie +4 more
doaj +1 more source
High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties
Advanced Functional Materials, EarlyView.High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker +14 more
wiley +1 more source
Optimum Resolution Bandwidth for Spectral Analysis of Stationary Random Vibration Data
Shock and Vibration, 1993 This article presents a methodology for selecting the frequency resolution bandwidth for the spectral analysis of stationary random vibration signals in an optimum manner.
Allan G. Piersol
doaj +1 more source
Decays in Quantum Hierarchical Models
, 2007 We study the dynamics of a simple model for quantum decay, where a single state is coupled to a set of discrete states, the pseudo continuum, each coupled to a real continuum of states.
Ariel Amir +5 more
core +1 more source
Imaging of Biphoton States: Fundamentals and Applications
Advanced Functional Materials, EarlyView.Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley +1 more source