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— Energy efficiency and fault-tolerance are the most important issues in the development of next-generation wireless ad hoc networks and sensor networks. Topology control as a low level service (typically below the traditional layer structure) governs communication among all nodes and is hence the primary target for increasing connectivity and saving… (More)

Fault-tolerant communication and energy efficiency are important requirements for future-generation wireless ad hoc networks, which are increasingly being considered also for critical application domains like embedded systems in automotive and aerospace. Topology control, which enables multi-hop communication between any two network nodes via a suitably… (More)

This paper 1 introduces a simple real-time distributed computing model for message-passing systems , which reconciles the distributed computing and the real-time systems perspective: By just replacing instantaneous computing steps with computing steps of non-zero duration, we obtain a model that both facilitates real-time scheduling analysis and retains… (More)

This paper 1 introduces a simple real-time distributed computing model for message-passing systems, which reconciles the distributed computing and the real-time systems perspective: By just replacing instantaneous computing steps with computing steps of non-zero duration , we obtain a model that both facilitates real-time scheduling analysis and retains… (More)

In an OPODIS'06 paper, we laid down the foundations of a real-time distributed computing model (RT-Model) with non-zero duration computing steps, which reconciles correctness proofs and real-time schedulability analysis of distributed algorithms. By applying the RT-Model to the well-known drift-free internal clock synchronization problem, we proved that… (More)

OBJECTIVES
Phantom limb pain (PLP) is a neuropathic condition in which pain is perceived as arising from an amputated limb. PLP is distinct from, although associated with, pain in the residual limb and nonpainful phantom sensations of the missing limb. Its treatment is extremely challenging; pharmaceutical options, while commonly employed, may be… (More)

We present generic transformations, which allow to translate classic fault-tolerant distributed algorithms and their correctness proofs into a real-time distributed computing model (and vice versa). Owing to the non-zero-time, non-preemptible state transitions employed in our real-time model, scheduling and queuing effects (which are inherently abstracted… (More)

- Univ, Ulrich Schmid, Heinrich Moser
- 2009

This work introduces a fault-tolerant real-time distributed computing model for message-passing systems, which reconciles the distributed computing and the real-time systems perspective: By just replacing instantaneous computing steps with computing steps of non-zero duration, we obtain a model that both facilitates real-time schedulability analysis and… (More)

- Ausgeführt Am, Univ Dipl, Ing Techn Ulrich Schmid, Heinrich Moser
- 2005

This master's thesis presents a proven-correct implementation of a distributed topology construction algorithm based upon the Thallner topology construction method for creating a minimal ∆-node connected fault-tolerant overlay graph. The algorithm works in asynchronous fault-tolerant distributed systems augmented with failure detectors. A detailed proof… (More)

- Heinrich Moser
- 2002

Starting with the very first evaluator, implemented as a thousand-line BASIC program in 1972, Smalltalk was the first computer language based entirely on objects and messages. This paper gives an overview of Smalltalk and some of the design issues Smalltalk implementors had to face.