Results 31 to 40 of about 369,559 (294)
PLoS ONE, 2021 Spectral similarity indices were used to select similar soil samples from a spectral library and improve the predictive accuracy of target samples. There are many similarity indices available, and precisely how to select the optimum index has become a ...
R Zeng +10 more
doaj +1 more source
Quasars and the Big Blue Bump [PDF]
, 2004 We investigate the ultraviolet-to-optical spectral energy distributions (SEDs) of 17 active galactic nuclei (AGNs) using quasi-simultaneous spectrophotometry spanning 900-9000 Angstrom (rest frame).
Anuradha Koratkar +19 more
core +1 more source
The Astrophysical Journal, 2023 Stream interaction regions (SIRs) are often thought to be responsible for the generation of suprathermal population in the interplanetary medium. Even though the source is the same, wide variations in the spectral indices of suprathermal populations are ...
Bijoy Dalal +3 more
doaj +1 more source
Plant Species Discrimination in a Tropical Wetland Using In Situ Hyperspectral Data
Remote Sensing, 2014 We investigated the use of full-range (400–2,500 nm) hyperspectral data obtained by sampling foliar reflectances to discriminate 46 plant species in a tropical wetland in Jamaica.
Kurt Prospere +2 more
doaj +1 more source
GMRT observations of X-shaped radio sources [PDF]
, 2006 We present results from a study of X-shaped sources based on observations using the Giant Metrewave Radio Telescope (GMRT). These observations were motivated by our low frequency study of 3C 223.1 (Lal & Rao 2005), an X-shaped radio source, which showed ...
A. P. Rao, D. V. Lal, Sudou
core +3 more sources
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Multispectral images collected by the European Space Agency's Sentinel-2 satellite offer a powerful resource for accurately and efficiently mapping areas affected by the distribution of invasive aquatic plants.
Elena Cristina Rodriguez-Garlito +2 more
doaj +1 more source
Detection of ozone stress in rice cultivars using spectral reflectance
Environmental Advances, 2021 Ozone stress identification in crops through remote sensing is a promising technology that has a major role in predicting stress-related physiological response.
Ambikapathi Ramya +7 more
doaj +1 more source
The Spectral Index Distribution of EGRET Blazars: Prospects for GLAST [PDF]
, 2007 The intrinsic distribution of spectral indices in GeV energies of gamma-ray--loud blazars is a critical input in determining the spectral shape of the unresolved blazar contribution to the diffuse extragalactic gamma-ray background, as well as an ...
Pavlidou, Vasiliki, Venters, Tonia M.
core +4 more sources
Confinement, Turbulence and Diffraction Catastrophes
, 2009 Many features of large N_c transition that occurs in the spectral density of Wilson loops as a function of loop area (observed recently in numerical simulations of Yang-Mills theory by Narayanan and Neuberger) can be captured by a simple Burgers equation
Berry +9 more
core +1 more source
GeodermaSoil organic matter (SOM) content is an important indicator to measure the degradation degree and fertility of soil. However, most current SOM prediction methods are based on statistical learning theory, overlooking the transmission process and physical ...
Jing Yuan +6 more
doaj +1 more source