Results 41 to 50 of about 1,468,576 (139)

Three-Dimensional Gravity Inversion Based on Attention Feature Fusion

Sensors
Three-dimensional gravity inversion is a process of obtaining the location, shape, and physical property parameters of underground anomaly sources using gravity anomaly data observed on the surface.
Chen Chen, Houpu Li, Yujie Zhang, Xiaomei Jin, Jianfeng Liu   +4 more
doaj   +1 more source

Special Vinberg cones and the entropy of BPS extremal black holes

Journal of High Energy Physics, 2021
We consider the static, spherically symmetric and asymptotically flat BPS extremal black holes in ungauged N = 2 D = 4 supergravity theories, in which the scalar manifold of the vector multiplets is homogeneous.
Dmitri V. Alekseevsky, Alessio Marrani, Andrea Spiro   +2 more
doaj   +1 more source

Quasi-Optimal Filtering in Inverse Problems

, 2004
A way of constructing a nonlinear filter close to the optimal Kolmogorov - Wiener filter is proposed within the framework of the statistical approach to inverse problems.
Cramér H., Golub G. H., Hansen P. C., Hansen P. C., Jansson P. A., Kolmogorov A. N., Lawson C. L., Press W. H., Terebizh V. Yu., Tikhonov A. N., Tikhonov A. N., V. Yu. Terebizh   +11 more
core   +1 more source

Towards surface wave tomography with 3D resolution and uncertainty

Seismica
Surface-wave tomography is crucial for mapping upper-mantle structure in poorly instrumented regions such as the oceans. However, data sparsity and errors lead to tomographic models with complex resolution and uncertainty, which can impede meaningful ...
Franck Latallerie, Christophe Zaroli, Sophie Lambotte, Alessia Maggi, Andrew Walker, Paula Koelemeijer   +5 more
doaj   +1 more source

Metric entropy in linear inverse scattering

Advanced Electromagnetics, 2016
The role of multiple views and/or multiple frequencies on the achievable performance in linear inverse scattering problems is addressed. To this end, the impact of views and frequencies on the Kolmogorov entropy measure is studied.
M. A. Maisto, R. Solimene, R. Pierri
doaj   +1 more source

Inverse Diffusion Theory of Photoacoustics

, 2009
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 ...
Ammari H, Arridge S R, Bal G, Bal G, Cox B T, Gilbarg D, Guillaume Bal, Gunther Uhlmann, Haltmeier M, Hristova Y, Kunyansky L A, Patch S, Stefanov P, Stein E, Uhlmann G   +14 more
core   +2 more sources

Score-Valued Decision Making Models Based on Inverse Soft Matrices [PDF]

Sahand Communications in Mathematical Analysis
In this work, we introduce some useful concepts  in soft set theory, such as $\overline{\alpha}$-inverse intersection and  $\overline{\alpha}$-inverse union of inverse soft sets, together with  the type soft $\overline{\alpha}$-upper, $\overline{\alpha}$-
Seda Erdinç, Emin Aygün
doaj   +1 more source

A particular block Vandermonde matrix [PDF]

ITM Web of Conferences, 2019
The Vandermonde matrix is ubiquitous in mathematics and engineering. Both the Vandermonde matrix and its inverse are often encountered in control theory, in the derivation of numerical formulas, and in systems theory.
Yaici Malika, Hariche Kamel
doaj   +1 more source

Task design in APOS Theory

Avances de Investigación en Educación Matemática, 2019
This paper discusses the role of task design in APOS Theory. The role played by the genetic decomposition in the theory and in task design is discussed.
María Trigueros, Asuman Oktaç
doaj   +1 more source

New Statistical Approaches for Modeling the COVID-19 Data Set: A Case Study in the Medical Sector

Complexity, 2022
Statistical distributions have great applicability for modeling data in almost every applied sector. Among the available classical distributions, the inverse Weibull distribution has received considerable attention. In the practice of distribution theory,
Mohammed M. A. Almazah, Kalim Ullah, Eslam Hussam, Md. Moyazzem Hossain, Ramy Aldallal, Fathy H. Riad   +5 more
doaj   +1 more source