Purpose This work aims to propose a new propeller recognition (propeller type
classification) method by using a nonlinear pattern-based sound classification model with …

The Detection of Envelope Modulation on Noise (DEMON) algorithm is popular for the
identification of vessels from passive acoustic data. We suggest several improvements to the …

Passive acoustic methods can detect, track and classify surface and underwater vessels. We
consider the application of these systems for DHS interests with attention to small boats. We …

There has been an inherent bias in studies of “mobility regimes” toward the perspective of
the authorities. This article suggests the concept of “subversive mobilities” to offer a novel …

After nearly two centuries at war with itself, Colombia witnessed an opportunity for peace in
2016 when the government reached a celebrated agreement with the leftist rebels of the …

After two centuries of almost non-stop warfare since Independence in 1819, Colombia now
finds itself at a crossroads. One path entails the construction of a culture of peace in the …

The drug cartels of South America and organized crime have long been known to use semi-
sub speedboats, Narco-Torpedoes and Narco-Submarines for smuggling cocaine from …

Since the early 1990s, maritime routes have been considered to be the main method used
by Colombian smugglers to transport illicit drugs to consumer or transhipment countries …

The ocean's opacity poses challenges for security, as new technology, eg underwater
drones, offers new opportunities for illegal activities, such as smuggling and terrorism. A …

Drug concealment is a widespread tactic used by drug traffickers and distributors to hide
their illegal cargo when transporting it within and across borders. Physical concealment …