Tailored multivariate analysis for modulated enhanced

Modulated enhanced diffraction (MED) is a technique allowing the dynamic structural characterization of crystalline materials subjected to an external stimulus, which is particularly suited for in situ and operando structural investigations at synchrotron sources. Contributions from the (active) part of the crystal system that varies synchronously with the stimulus can be extracted by an offline analysis, which can only be applied in the case of periodic stimuli and linear system responses. In this paper a new decomposition approach based on multivariate analysis is proposed.

A Derivative-Free Riemannian Powell's Method, Minimizing Hartley-Entropy-Based ICA Contrast

Even though the Hartley-entropy-based contrast function guarantees an unmixing local minimum, the reported nonsmooth optimization techniques that minimize this nondifferentiable function encounter computational bottlenecks. Toward this, Powell's derivative-free optimization method has been extended to a Riemannian manifold, namely, oblique manifold, for the recovery of quasi-correlated sources by minimizing this contrast function.

Thwarting Obfuscated Malware via Differential Fault Analysis

Detecting malware in mobile applications has become increasingly complex as malware developers turn to advanced techniques to hide or obfuscate malicious components. Alterdroid is a dynamic-analysis tool that compares the behavioral differences between an original app and numerous automatically generated versions of it containing carefully injected modifications.

The contribution of PSInSAR interferometry to landslide hazard in weak rock-dominated areas

In the Grande da Pipa river basin, north of Lisbon, 64 % of the total number of landslides inventoried is totally or partially included in a lithological unit composed by marl, clay, and sandstone intercalation complex that is present in 58 % of the study area. The Persistent Scatterer synthetic aperture radar interferometry technique is applied to a data set of TerraSAR-X SAR images, from April of 2010 to March of 2011, firstly to the Laje-Salema test site and further exported to the Grande da Pipa river basin.