This paper describes research on the perception of undergraduate students of the concept of reduction. Specifically, based on an analysis of students' answers to questions ad...
This paper describes Catrapilas, a small robotic platform, designed to be capable of solving some well known robot problems. Among these are some of the most popular robotic contes...
In this paper, we formulate the concept of policy-based cryptography which makes it possible to perform policy enforcement in large-scale open environments like the Internet, with ...
Many safety-critical software applications are hard real-time systems. They have stringent timing requirements that have to be met. We present a description of timing behaviour tha...
This paper presents a technique to characterize human actions in visual surveillance scenarios in order to describe, in a qualitative way, basic human movements in general imaging ...
Filiberto Pla, Pedro Canotilho Ribeiro, José...