In his decades-long career in tech journalism, Dennis has written about nearly every type of hardware and software. He was a founding editor of Ziff Davis’ Computer Select in the 1990s, senior ...

I will explain examples of linear transformations of Lie groups. Regarding left-invariant vectors, I will show the equivalence between the expression viewed from the mapping of tangent vectors and the ...

If you've previously been using procedural calls to functions and operations using this library, then from version 3.0 you should use MarkBaker/PHPMatrixFunctions instead (available on packagist as ...

Abstract: We propose a novel adjoint variable approach to design sensitivity analysis with the frequency domain transmission line modeling (FDTLM) method. An enlarged system matrix is constructed that ...

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Abstract: It is of great significance to perform adjoint electromagnetic (EM) sensitivity analysis when designing or optimizing a microwave component. Recent advances in adjoint EM sensitivity ...

A gradient preconditioning approach based on transmitted wave energy for least-squares reverse time migration (LSRTM) is proposed in this study. The gradient is preconditioned by using the energy of ...

The presence of coherent wave groups in the ocean has been so far postulated but still lacks evidence other than the indication from the radar images. Here, we attempt to reconstruct a wave field to ...