We discuss how a class of difficult kinematic problems can play an important role in an introductory course in stimulating students’ reasoning on more complex physical situations. The problems presented here have an elementary analysis once certain symmetry features of the motion are revealed. We also explore some unexpected directions these problems lead us.

In this paper we are concerned with event-based situation analysis. Application areas include the understanding and awareness of complex unfolding scenarios such as homeland security threats and future battlespace engagements. The paper (i) discusses the differences between the environments/requirements for event-based management and situation management, (ii) presents an argument for an integr...

Background: Emergency operators are responsible for determining the nature of callers' problems, responding to them, and dispatching an appropriate rescue team. In addition, they provide instructions on cardiopulmonary resuscitation, bleeding control, airway management, and other life-saving procedures. Emergency operators are often faced with difficult situations. This study aims to highlight ...