Most of the existing modeling tools and frameworks for embedded applications use levels of abstraction where execution and communication times of computational tasks are not captured. Thus, properties such as time and value determinism can be lost when refining the model closer to a target platform. The Logical Execution Time (LET) paradigm has been proposed to deal with this issue, by enabling...

The key contribution of this project is a realization of modular, scalable and extensible simulation and design paradigm for video codec based on the system-level modeling and its implementation on extensible framework. To support this new simulation and design paradigm, generic dataaow of video codec system is modeled by homogeneous synchronous dataaow HSDF and implemented on the heterogeneous...

Since the first large-scale computer network was built in the early 1960s, the protocol design problem has become a more important issue to efficiently coordinate distributed system nodes. Recently, in response to the fast growing demand for connecting various devices with current network infrastructures, many intricate protocols have been designed to support communications across such heteroge...

This technical note uses the Ptolemy II interface automaton editor to compose networks of dataflow actors and buffers. The automata are first described as Actif actors; the composition of the automata together with a controller automata reveals the combined behavior of the network. This technical note can be referenced as: “Interface Automata and Actif Actors,” H John Reekie, UC Berkeley, Novem...

Abstract In his Commentary on Ptolemy’s Harmonics , Porphyry debunks quantitative theory of pitches by demonstrating that are qualitative attributes sound. I argue Porphyry’s main concern is to save the phenomenological dimension sound while preserving possibility a analysis music. show how he draws Aristotelian tradition develop as emergent properties covary with some underlying features witho...

In the context of PTOLEMY project, need for a site with rather low cosmogenic induced background led us to measure differential muon flux inside bunker Monte Soratte, located about 50~km north Rome (Italy). The measurement was performed Cosmic Ray Cube (CRC), portable tracking device. simple operation crucial finalise measurements, as they were carried out during COVID-19 lockdown and in devoid...

After the fall of the Roman Empire in AD 476, scientific progress in Europe had come to a standstill. This era between fall of Rome and the Renaissance is commonly known as the dark ages. However, from the 8th till 13th century, scientific and cultural knowledge had flourished in the Islamic world. This period, which began soon after the establishment of the Abbasid Khalifate in Baghdad in the ...

Abstract This article revisits the origins of Alexander Mosaic at Pompeii by focusing on figure standing Alexander's right hand. The starting point is Andreas Rumpf's suggestion that this “right-hand man” may be patron original painting, who wished to advertise his own role in represented battle. It argued Ptolemy I perhaps strongest candidate historical grounds, and interesting connections can...