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On the possibility of breaking the heterodyne detection quantum noise limit with cross-correlation
(Institute of Electrical and Electronics Engineers Inc., 2018)
The cross-correlation sensitivity of two identical balanced photodiode heterodyne receivers
is characterized. Both the balanced photodiodes receive the same weak signal split up equally, a situation
equivalent to an ...
Observed emergence of the climate change signal: from the familiar to the unknown
(American Geophysical Union, 2020)
Changes in climate are usually considered in terms of trends or differences over time. However, for many impacts requiring adaptation, it is the amplitude of the change relative to the local amplitude of climate variability ...
Electromagnetic fluctuations of the whistler-cyclotron and firehose instabilities in a Maxwellian and Tsallis-kappa-like plasma
(American Geophysical Union, 2015)
Observed electron velocity distributions in the Earth's magnetosphere and the solar wind exhibit a variety of nonthermal features which deviate from thermal equilibrium, for example, in the form of temperature anisotropies, ...
Soot pyrometry by emission measurements at different wavelengths in laminar axisymmetric flames
(Taylor and Francis, 2020)
In this work, a multi-wavelength pyrometry method is proposed in order to evaluate soot temperature for laminar axisymmetric non-premixed flames. A single radiative model that combines three detection wavelengths is developed ...
Fuzzy modeling applied to the welfare of poultry farms workers
(Universidad Nacional de Colombia Sede Medellín, 2012)
The objective of this work was to develop a fuzzy model to classify the working environment in poultry farms. For this purpose, air temperature, relative humidity, noise level, and ammonia concentration were measured in a ...
On-sky Performance of the CLASS Q-band Telescope
(Institute of Physics Publishing, 2019)
The Cosmology Large Angular Scale Surveyor (CLASS) is mapping the polarization of the cosmic microwave background (CMB) at large angular scales (2 < ℓ ≲ 200) in search of a primordial gravitational wave B-mode signal ...
Ensemble classification method for structural damage assessment under varying temperature
(SAGE Publications Ltd, 2017)
Vibration-based damage assessment approaches use modal parameters, such as frequency response functions, mode shapes, and natural frequencies, as indicators of structural damage. Nevertheless, these parameters are sensitive ...
Conjugate heat transfer model for feedback control and state estimation in a volumetric solar receiver
(Elsevier, 2020)
Open volumetric solar receivers (VSRs) are a promising technology for concentrated solar power plants due to their capability to provide heat using ambient air as the working fluid operating at temperatures over 700 degrees ...
Design and Performance of a 600-720-GHz Sideband-Separating Receiver Using AlO(x) and AlN SIS Junctions
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2011-01)
We present the design, modeling, construction, and characterization of a sideband separating heterodyne receiver that covers the frequency range from 600 to 720 GHz. The receiver has been constructed using waveguide ...