Model spe i ation and visualization in the MASSIVE proje t Laurent iu Ni olae Ed Deprettere Bart Kienhuis Leiden Institute for Advan ed Computer S ien e Leiden University, Leiden, The Netherlands E-mail: fnld,edd,kienhuisg lia s.nl Abstra t| The MASSIVE proje t aims at developing methods and tools for the exploring of large-s ale embedded system designs at a high level of abstra tion. One of th...

Networked sensors are becoming an increasingly important field of research as power and size requirements grow smaller and it becomes easier to embed thousands or millions of these devices in our environment. However, there is currently very little programming support for these and other event-based systems. In this paper, we focus on TinyOS, an event-based operating system for Smart Dust netwo...

The continuous-time (CT) domain in Ptolemy II aims to help the design and simulation of systems that can be modeled using ordinary differential equations (ODEs). ODEs are often used to model analog circuits, plant dynamics in control systems, lumped-parameter mechanical systems, lumpedparameter heat flows and many other physical systems. Let’s start with an example. Consider a second order diff...

Neither UML 2.0 nor the upcoming SysML 1.0 currently provides sufficient means for applications in the context of heterogeneous electronic systems description and simulation. In this article, we demonstrate how general concepts of the simulation framework Ptolemy II seamlessly complement SysML to serve as a universal description language covering discrete event as well as continuous behaviors.