We analyze Bouguer anomalies in/around the focal region of the 2016 Kumamoto earthquake to examine features, such as continuity, segmentation and faulting type, of the active fault zones related to the earthquake. Several derivatives and structural parameters calculated from a gravity gradient tensor are applied to highlight the features. First horizontal and vertical derivatives, as well as a ...

Due to its environmentally benign character, supercritical carbon dioxide (scCO2) is considered in green chemistry, as a substitute for organic solvents in chemical reactions. In this paper, an innovative approach for preparation of flame retardant cotton fabric was obtained by utilizing supercritical carbon dioxide with co-solvent. A novel phosphorusnitrogen containing piperazine derivative, t...

In mathematics, statistics, and computer science, particularly in the fields of machine learning inverse problems, regularization is a process introducing additional information order to solve an ill-posed problem or prevent overfitting. The Tikhonov method widely used complex problems engineering. vertical derivative gravity can highlight local anomalies separate horizontal superimposed abnorm...

The viewshed of a topographic dataset is the region around a given observation point that is visible from that location. Most GIS packages allow its computation. It has many uses, such as in urban environment planning, or in analysing archaeological site data. The viewshed is used here as a data enhancement tool to aid in the interpretation of geophysical potential field data. The fraction of t...

Seul Jung and Richard C. Dorf Department of Electrical and Computer Engineering University of California; Davis Davis, CA 95616 e-mail:[email protected], [email protected] Abstract : In this paper a new design technique for a proportional, integral, derivative (PID) and a proportional, integral, derivative and acceleration(PIDA) controller to satisfy speci cations for transient and steady...

in this article, we survey the asymptotic stability analysis of fractional differential systems with the prabhakar fractional derivatives. we present the stability regions for these types of fractional differential systems. a brief comparison with the stability aspects of fractional differential systems in the sense of riemann-liouville fractional derivatives is also given.

For any Lie group action S:G×P → P , we introduce C∞(P )linear operators S • , that transform n-forms ωn ∈ An(P, V ) into (n−i)-forms S •ωn ∈ An−i(P,Alti(g, V )) . We compute the exterior derivative of these generated forms and their behavior under interior products with vector fields and Lie differentiation. By combination with Lie algebra valued forms θ ∈ A1(P,g) and φp ∈ Ap(P,g) , we recover...

Most of the classical mathematical methods for edge detection based on the derivative of the pixels of the original image are Gradient operators, Laplacian and Laplacian of Gaussian operators. Gradient based edge detection methods, such as Roberts, Sobel and Prewitts, have used two 2-D linear filters to process vertical edges and horizontal edges separately to approximate first-order derivative...

A second order numerical method for the primitive equations (PEs) of large-scale oceanic flow formulated in mean vorticity is proposed and analyzed, and the full convergence in L2 is established. In the reformulation of the PEs, the prognostic equation for the horizontal velocity is replaced by evolutionary equations for the mean vorticity field and the vertical derivative of the horizontal vel...