Concurrency is often perceived as difficult by students. One reason for this may be due to the fact that abstractions used in concurrent programs leave more situations undefined compared sequential (e.g., what order statements are executed), which makes it harder create a proper mental model of execution environment. Students who aim explore through testing further hindered non-determinism sinc...

This paper addresses the concurrency issues affecting Behavior Trees (BTs), a popular tool to model behaviors of autonomous agents in video game and robotics industry. BT designers can easily build complex composing simpler ones, which represents key advantage BTs. The parallel composition BTs expresses way combine concurrent that has high potential, since pre-existing results easier than class...

We propose and evaluate an admission control paradigm for RTDBS, in which a transaction is submitted to the system as a pair of processes: a primary task, and a recovery block. The execution requirements of the primary task are not known a priori, whereas those of the recovery block are known a priori. Upon the submission of a transaction, an Admission Control Mechanism is employed to decide wh...