Results 31 to 40 of about 1,051,339 (291)

Variation in the circularly polarized light reflection of Lomaptera (Scarabaeidae) beetles [PDF]

open access: yes, 2016
An extended spectroscopic study on the left-through-left circularly polarised reflection spectra of a large number of beetles from the Australasian Scrabaeidae:Cetoniinae of the Lomaptera genus was undertaken.
Carter, IE   +3 more
core   +1 more source

A Novel Approach to Unsupervised Change Detection Based on Hybrid Spectral Difference

open access: yesRemote Sensing, 2018
The most commonly used features in unsupervised change detection are spectral characteristics. Traditional methods describe the degree of the change between two pixels by quantifying the difference in spectral values or spectral shapes (spectral curve ...
Li Yan, Wang Xia, Zhan Zhao, Yanran Wang
doaj   +1 more source

Spectral Evolution of an Earth-Like Planet [PDF]

open access: yes, 2006
We have developed a characterization of the geological evolution of the Earths atmosphere and surface in order to model the observable spectra of an Earth-like planet through its geological history.
Cloud P. E.   +4 more
core   +2 more sources

Novel spectral features of nanoelectromechanical systems [PDF]

open access: yesScientific Reports, 2014
Electron transport through a quantum dot or single molecule coupled to a quantum oscillator is studied by the Keldysh nonequilibrium Green's function formalism to obtain insight into the quantum dynamics of the electronic and oscillator degrees of freedom.
Tahir, Muhammad   +2 more
openaire   +3 more sources

DiSC: Differential Spectral Clustering of Features

open access: yesAdvances in Neural Information Processing Systems 35, 2022
Selecting subsets of features that differentiate between two conditions is a key task in a broad range of scientific domains. In many applications, the features of interest form clusters with similar effects on the data at hand. To recover such clusters we develop DiSC, a data-driven approach for detecting groups of features that differentiate between ...
Ram Dyuthi Sristi   +2 more
openaire   +3 more sources

Modification of spectral features by nonhuman primates [PDF]

open access: yesBehavioral and Brain Sciences, 2014
AbstractAckermann et al. discuss the lack of evidence for vocal control in nonhuman primates. We suggest that nonhuman primates may be capable of achieving greater vocal control than previously supposed. In support of this assertion, we discuss new evidence that nonhuman primates are capable of modifying spectral features in their vocalizations.
Daniel J, Weiss   +2 more
openaire   +2 more sources

Atomic Spectral Features During Thermonuclear Flashes on Neutron Stars [PDF]

open access: yes, 2003
The gravitational redshift measured by Cottam, Paerels and Mendez for the neutron star (NS) in the low-mass X-ray binary EXO 0748-676 depends on the identification of an absorption line during a type I burst as the H$\alpha$ line from hydrogenic Fe.
Day C. S. R.   +14 more
core   +1 more source

A Spectral-Based Approach for BCG Signal Content Classification

open access: yesSensors, 2021
This paper has two objectives: the first is to generate two binary flags to indicate useful frames permitting the measurement of cardiac and respiratory rates from Ballistocardiogram (BCG) signals—in fact, human body activities during measurements can ...
Mohamed Chiheb Ben Nasr   +4 more
doaj   +1 more source

A Blended Artificial Intelligence Approach for Spectral Classification of Stars in Massive Astronomical Surveys

open access: yesEntropy, 2020
This paper analyzes and compares the sensitivity and suitability of several artificial intelligence techniques applied to the Morgan–Keenan (MK) system for the classification of stars.
Carlos Dafonte   +4 more
doaj   +1 more source

Effects of the Spatial Resolution of UAV Images on the Prediction and Transferability of Nitrogen Content Model for Winter Wheat

open access: yesDrones, 2022
UAV imaging provides an efficient and non-destructive tool for characterizing farm information, but the quality of the UAV model is often affected by the image’s spatial resolution.
Yan Guo   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy