Nabendu Chaki & Marina L. Gavrilova 
Transactions on Computational Science XXXI 
Special Issue on Signal Processing and Security in Distributed Systems

This, the 31st issue of the Transactions on Computational Science, focusses on signal processing and security in distributed systems. The areas of application include facial recognition, musical analysis, the diagnosis of retinal disorder, quantum circuits, intrusion detection, information leakage analysis, and the minimization of aliasing effects on text images.