Results 21 to 30 of about 581,869 (300)
Adaptive dictionary learning based on local configuration pattern for face recognition
EURASIP Journal on Advances in Signal Processing, 2020 Sparse representation based on classification and collaborative representation based classification with regularized least square has been successfully used in face recognition.
Dongmei Wei +5 more
doaj +1 more source
Large-angle scattered light measurements for quantum-noise filter cavity design studies [PDF]
, 2012 Optical loss from scattered light could limit the performance of quantum-noise filter cavities being considered for an upgrade to the Advanced LIGO gravitational-wave detectors.
Anderson +22 more
core +2 more sources
Geometrical vs wave optics under gravitational waves [PDF]
, 2015 We present some new derivations of the effect of a plane gravitational wave on a light ray. A simple interpretation of the results is that a gravitational wave causes a phase modulation of electromagnetic waves.
Angélil, Raymond, Saha, Prasenjit
core +1 more source
Method to evaluate errors of Mie-Lidar in the transition zone with a dual CCD laser system
Results in Physics, 2022 Mie Scattering Light Detection and Ranging (Mie-Lidar) is the most frequently used tool for obtaining the vertical profile of aerosol extinction coefficients. However, Mie-Lidar has an area that is not fully overlapping (called a transition zone) several
Yue-Feng Zhao +7 more
doaj +1 more source
Nanophotonics, 2023 We numerically investigate second harmonic generation (SHG) from a monolayer of 2D-material placed on photonic moiré superlattice fabricated by dielectric materials.
Ning Tingyin +4 more
doaj +1 more source
Photonics, 2023 We use the extended Huygens–Fresnel integral to analyze the propagation properties of a class of partially coherent beams with Laguerre non-uniform coherence properties (called Laguerre non-uniformly correlated beams) in free space and in a turbulent ...
Yang Zhao +6 more
doaj +1 more source
Data Processing and Analysis of Eight-Beam Wind Profile Coherent Wind Measurement Lidar
Remote Sensing, 2021 Real-time measurement of atmospheric wind field parameters plays an important role in weather analysis and forecasting, including improving the efficiency of wind energy, particle tracking, boundary layer measurements, and airport security. In this study,
Yuefeng Zhao +7 more
doaj +1 more source
Transformation Optics and the Geometry of Light [PDF]
, 2008 Metamaterials are beginning to transform optics and microwave technology thanks to their versatile properties that, in many cases, can be tailored according to practical needs and desires.
Leonhardt, Ulf, Philbin, Thomas G.
core +2 more sources
Photonics, 2020 The single-photon ionization time-of-flight mass spectrometer (SPI-TOFMS), which has high sensitivity, high accuracy, and a short response time, is effective for the real-time monitoring of volatile organic compounds (VOCs). In this study, the theory and
Yuefeng Zhao +9 more
doaj +1 more source
Reflectionless Tunnelling of Light in Gradient Optics [PDF]
, 2005 We analyse the optical (or microwave) tunnelling properties of electromagnetic waves passing through thin films presenting a specific index profile providing a cut-off frequency, when they are used below this frequency. We show that contrary to the usual
Aharonov +19 more
core +3 more sources