We present a formalization of the notion of time in virtualized distributed real-time systems. We use this formalization to propose a virtual clock condition that enables us to test the suitability of ...

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The emergence of Internet of Everything has made time awareness a feature of high priority. One of the enabling factors is time synchronization. High-quality synchronization demands frequency source ...

The paper describes the synchronization of logical clocks. As something of an afterthought, I decided to see what kind of synchronization it provided for real-time clocks. So, I included a theorem ...

These clocks are now about 100 times more accurate than the best cesium clocks and can measure time so precisely that they would gain or lose less than one second over billions of years. To use ...