نتایج جستجو برای: ptolemy
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Dataflow process networks are a special case of Kahn process networks (PN). In dataflow process networks, each process consists of repeated firings of a dataflow actor, which defines a quantum of computation. Using this quantum avoids the complexities and context switching overhead of process suspension and resumption incurred in most implementations of Kahn process networks. Instead of context...
We construct frieze patterns of type DN with entries which are numbers of matchings between vertices and triangles of corresponding triangulations of a punctured disc. For triangulations corresponding to orientations of the Dynkin diagram of type DN , we show that the numbers in the pattern can be interpreted as specialisations of cluster variables in the corresponding Fomin-Zelevinsky cluster ...
The Ptolemy project studies heterogeneous modeling and design of concurrent systems. The focus is on embedded systems, particularly those that mix technologies, including for example analog and digital electronics, hardware and software, and electronics and mechanical devices (including MEMS, microelectromechanical systems). The focus is also on systems that are complex in the sense that they m...
Introduction: Launched in 2004, the Rosetta spacecraft [1], which is en-route to rendezvous with, and land on, comet 67P/Churyumov-Gerasimenko [2], will awake from its current deep space hibernation on January 20, 2014 (i.e. by the time of the conference it will be known whether this was successfully completed or not). Our abstract for the 44 LPSC [3] describes some of the operations that will ...
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Abstract When the Dark Matter mass is below eV-scale, its cosmological occupation number exceeds ones of photons from cosmic microwave background as well relic neutrinos. If such decays to pairs neutrinos, it implies that experiments seek detection neutrino may be sensitive this additional form “dark radiation”. Here we study prospects for taking into account various options forecasted performa...
With the use of micro sensors on the rise in technologies today a need for a better understanding of the interactions of such sensors is crucial. Many challenges arise when trying to model and simulate networks of these sensors (also called sensor networks). Sensors have various capabilities and constraints that provide this difficulty. A complete model of a sensor network is needed to improve ...
The ESA Rosetta spacecraft followed comet 67P at a close distance for more than 2 yr. In addition, it deployed the lander Philae on to the surface of the comet. The (surface) composition of the comet is of great interest to understand the origin and evolution of comets. By combining measurements made on the comet itself and in the coma, we probe the nature of this surface material and compare i...
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