Scientists successfully addressed mathematical challenges in conventional Spectral Matrix analysis, used to analyze three-component seismic signals, by introducing time-delay components. The new ...

The paper deals with spectral divisors of a matrix polynomial relative to a given contour. Necessary and sufficient conditions are given for the existence of spectral divisors whose behaviour at ...

There are three types of cone cells in the retina that are called L-cones (sensitive to the red light), M-cones (sensitive to the green light), and S-cones (sensitive to the blue light). The ...

Microphone array technology can be used to locate and analyse sound sources on stationary and moving objects. This is an important prerequisite for making modern aircraft engines quieter. Acoustic ...