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   Articles with "spectral shift" as a keyword



Improving fuel utilization in SmAHTR with spectral shift control design: Proof of concept

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recommendations! Published in 2017 at "Annals of Nuclear Energy"

DOI: 10.1016/j.anucene.2016.12.037

Abstract: Abstract This paper presents a spectral shift design based approach to improve the fuel utilization factor or alternatively to increase the cycle length in a graphite moderated reactor. The feasibility of this concept was tested… read more here.

Keywords: spectral shift; fuel utilization; fuel; design ... See more keywords

Absolute continuity of spectral shift

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recommendations! Published in 2019 at "Journal of Functional Analysis"

DOI: 10.1016/j.jfa.2018.05.011

Abstract: In this paper we develop the method of double operator integrals to prove trace formulae for functions of contractions, dissipative operators, unitary operators and self-adjoint operators. To establish the absolute continuity of spectral shift, we… read more here.

Keywords: absolute continuity; continuity; spectral shift; continuity spectral ... See more keywords
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On positivity of spectral shift functions

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recommendations! Published in 2017 at "Linear Algebra and its Applications"

DOI: 10.1016/j.laa.2017.02.026

Abstract: Abstract We show that every spectral shift function of an even order η 2 k is nonnegative outside the convex hull of the spectrum of an initial operator cvh σ ( H ) ; every… read more here.

Keywords: spectral shift; positivity spectral; shift functions; shift ... See more keywords

Investigation of reflection properties of applied reflectors for thermal neutrons by considering the albedo and spectral shift

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recommendations! Published in 2017 at "Progress in Nuclear Energy"

DOI: 10.1016/j.pnucene.2017.06.011

Abstract: Abstract In this paper, thermal neutrons reflection coefficient has been measured experimentally for water, graphite, polyethylene, and lead reflectors at average incident angle 56 ∘ by using 241 Am-Be neutron source (5.2 Ci) and BF 3… read more here.

Keywords: shift; reflector; spectral shift; investigation reflection ... See more keywords
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Chlorophyll deficiency (chlorosis) detection based on spectral shift and yellowness index using hyperspectral AVIRIS-NG data in Sholayar reserve forest, Kerala

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recommendations! Published in 2020 at "Remote Sensing Applications: Society and Environment"

DOI: 10.1016/j.rsase.2020.100369

Abstract: Abstract Hyperspectral remote sensing is highly efficient in retrieving the leaf chlorophyll concentrations and its deficiency, which is manifested in the form of a spectral shift in reflectance. In the present study, the detection of… read more here.

Keywords: index; aviris data; yellowness index; spectral shift ... See more keywords

Lightweight Spatial–Spectral Shift Module With Multihead MambaOut for Hyperspectral Image Classification

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recommendations! Published in 2025 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"

DOI: 10.1109/jstars.2024.3505984

Abstract: In hyperspectral images, the high dimensionality of spectral data often leads to redundant spectral information, making it difficult to extract features. Two-dimensional CNNs fail to effec-tively extract spatial and spectral information, and deploying three-dimensional CNNs… read more here.

Keywords: classification; spectral shift; shift module; spatial spectral ... See more keywords

Analysis of the impact of temperature on the spectral shift in ultraviolet hyperspectral imaging spectrometers.

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recommendations! Published in 2024 at "Optics express"

DOI: 10.1364/oe.517945

Abstract: The imaging spectrometer's high performance in practical applications may be compromised by environmental factors, particularly temperature variations, posing a challenge to its stability. Temperature fluctuations can induce spectral shift, directly impacting the accuracy of spectral… read more here.

Keywords: temperature; temperature spectral; impact temperature; spectral shift ... See more keywords

Suppressing the spectral shift of a polarization-independent nanostructure with multiple resonances.

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recommendations! Published in 2022 at "Optics letters"

DOI: 10.1364/ol.472360

Abstract: Resonances are the cornerstone of photonic applications in many areas of physics and engineering. The spectral position of a photonic resonance is dominated by the structure design. Here, we devise a polarization-independent plasmonic structure comprising… read more here.

Keywords: spectral shift; polarization independent; shift polarization; polarization ... See more keywords

The tilt effect in DOAS observations

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recommendations! Published in 2017 at "Atmospheric Measurement Techniques"

DOI: 10.5194/amt-10-4819-2017

Abstract: Abstract. Experience of differential atmospheric absorption spectroscopy (DOAS) shows that a spectral shift between measurement spectra and reference spectra is frequently required in order to achieve optimal fit results, while the straightforward calculation of the… read more here.

Keywords: absorption; effect; spectral shift; doas ... See more keywords