Results 21 to 30 of about 5,943,425 (299)

Estimating the Net Magnetic Moment of Geological Samples From Planar Field Maps Using Multipoles

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Recent advances in magnetic microscopy have enabled studies of geological samples whose weak and spatially nonuniform magnetizations were previously inaccessible to standard magnetometry techniques.
Eduardo A. Lima   +4 more
doaj   +1 more source

Inverse Unit Teissier Distribution: Theory and Practical Examples

open access: yesAxioms, 2023
In this paper, we emphasize a new one-parameter distribution with support as [1,+∞). It is constructed from the inverse method applied to an understudied one-parameter unit distribution, the unit Teissier distribution.
Najwan Alsadat   +5 more
doaj   +1 more source

Direct spectra of Bishop spaces and their limits [PDF]

open access: yesLogical Methods in Computer Science, 2021
We apply fundamental notions of Bishop set theory (BST), an informal theory that complements Bishop's theory of sets, to the theory of Bishop spaces, a function-theoretic approach to constructive topology.
Iosif Petrakis
doaj   +1 more source

Imaging of fast moving electron-density structures in the polar cap

open access: yesAnnals of Geophysics, 2007
The imaging of fast-moving electron-density structures in the polar cap presents a unique set of challenges that are not encountered in other ionospheric imaging problems.
C. N. Mitchell, P. S. J. Spencer
doaj   +1 more source

Tomographic Experiments for Defining the 3D Velocity Model of an Unstable Rock Slope to Support Microseismic Event Interpretation

open access: yesGeosciences, 2020
To monitor the stability of a mountain slope in northern Italy, microseismic monitoring technique has been used since 2013. Locating microseismic events is a basic step of this technique.
Zhiyong Zhang   +3 more
doaj   +1 more source

Inverse transport theory of photoacoustics [PDF]

open access: yesInverse Problems, 2010
We consider the reconstruction of optical parameters in a domain of interest from photoacoustic data. Photoacoustic tomography (PAT) radiates high frequency electromagnetic waves into the domain and measures acoustic signals emitted by the resulting thermal expansion. Acoustic signals are then used to construct the deposited thermal energy map.
Bal, Guillaume   +2 more
openaire   +2 more sources

Inverse diffusion theory of photoacoustics [PDF]

open access: yesInverse Problems, 2010
This paper analyzes the reconstruction of diffusion and absorption parameters in an elliptic equation from knowledge of internal data. In the application of photo-acoustics, the internal data are the amount of thermal energy deposited by high frequency radiation propagating inside a domain of interest. These data are obtained by solving an inverse wave
Bal, Guillaume P., Uhlmann, Gunther
openaire   +3 more sources

Methods to Invert Temperature Data and Heat Flow Data for Thermal Conductivity in Steady-State Conductive Regimes

open access: yesGeosciences, 2019
Temperature and heat flow data carry specific information about the distribution of thermal conductivity variations which is not available in other geophysical data sets. Thus, thermal data constitute important complementary data sets in the multiphysics-
Wallace Anderson McAliley, Yaoguo Li
doaj   +1 more source

Solutions associated with discrete and continuous spectrums in the inverse scattering method for the Vakhnenko-Parkes equation [PDF]

open access: yes, 2012
In this paper the inverse scattering method is applied to the Vakhnenko-Parkes equation. We describe a procedure for using the inverse scattering transform to find the solutions that are associated with both the bound state spectrum and continuous ...
Vakhnenko, V.O., Parkes, E.J.
core   +4 more sources

Global Characterization of CO2 Column Retrievals from Shortwave-Infrared Satellite Observations of the Orbiting Carbon Observatory-2 Mission

open access: yesRemote Sensing, 2011
The global characteristics of retrievals of the column-averaged CO2 dry air mole fraction, XCO2, from shortwave infrared observations has been studied using the expected measurement performance of the NASA Orbiting Carbon Observatory-2 (OCO-2) mission ...
Charles Miller   +4 more
doaj   +1 more source

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