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Mostrando ítems 21-30 de 146
Adicionando informação a priori ao formalismo do FWI através da entropia relativa
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIA E ENGENHARIA DE PETRÓLEO, 2021-07-16)
Full waveform inversion is a technique used to obtain the subsurface velocity model
with high accuracy. In the oil industry (mainly in reservoir characterization), it is common to use well information as priori information ...
Stationary and dynamic aerodynamic assessment of vocal hyperfunction using enhanced supraglottal and subglottal inverse filtering methodsStatiónary and dynamic aerodynamic assessment of vocal hyperfunctión using enhanced supraglottal and subglottal inverse filtering methods
(2018)
This thesis describes the guidelines, experimental design, and initial results for stationary and dynamic aerodynamic assessments of vocal hyperfunction.
This work aims to improve the understanding and clinical assessment ...
Equivalent ultrasonic impedance in multilayer media. A parameter estimation problem
(Taylor & Francis Ltd, 2013-12)
This article deals with ultrasonic transmission through multilayer systems. The equivalent ultrasonic impedance of such systems is based on the transmission line built as a convenient model to reduce the computational time ...
Inversão sísmica da forma de onda completa com funcionais baseados no traço analítico
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM GEODINÂMICA E GEOFÍSICA, 2019-05-17)
Currently, the greatest challenge to overcome in order to apply FWI is avoiding cycle-skipping.
Accomplishing this goal requires an initial velocity model that has a significant amount of longwavelength information from ...
Tensor momento sísmico para eventos no nordeste do Brasil com amplitudes espectrais: estudos em São Caetano, PE
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM GEODINÂMICA E GEOFÍSICA, 2016-06-07)
The study of the seismic source is important to improve our
understanding of the physical processes that trigger earthquakes, and also for
seismotectonics investigations of a region. In this work, we modify an ...
The 2015 Mw 8.3 Illapel, Chile, earthquake: direction-reversed along-dip rupture with localized water reverberation
(Seismological Society of America, 2017)
The kinematic rupture process of the 2015 Illapel, Chile, earthquake is investigated based on a joint inversion of teleseismic, Interferometric Synthetic Aperture Radar, Global Positioning System, and tsunami data, as well ...
Moment-tensor inversion of explosion events recorded on Ubinas volcano, Peru
(EGU General Assembly, 2008)
Situated in the Central Volcanic Zone (CVZ), southern Peru, Ubinas volcano (5672 m) is an active andesitic stratovolcano located 60 km east from Arequipa city. It is truncated in the upper part by a caldera 600 m in diameter. ...
Inversão sísmica das formas de onda baseada em otimização híbrida
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIA E ENGENHARIA DE PETRÓLEO, 2020-02-19)
The Oil today is a vital resource for society. Besides being a great player in the energy
sector, it is also a raw material for many products that are essential in our daily lives.
However, the increase of its production ...
On statistical theory of radar measurements
(Aalto University School of Science, 2012)
Statistical treatment of radar measurements is important as most radar measurements are corrupted by random receiver noise. In addition to this, many radar targets themselves have to be modeled as random processes. It is ...