We propose incremental, real-time search as a general approach to real-time decision making. A good example of real-time decision making is air-traffic control when an airport is unexpectedly closed due to an earthquake or severe winter storm. Under these circumstances, the controller must decide in real time where to divert each incoming plane so that it can land safely. We model real-time dec...

In this paper we evaluate the impact of the programming model on the performance and complexity of Entry Consistency-based software distributed shared-memory systems (software DSMs). We study three novel software DSMs that can all take advantage of lock-style primitives but impose different variations of the sharedmemory programming model. The first variation is a plain sharedmemory model based...

It is well known that the relative motion of many particles can be described by the geodesic deviation equation. Less well known is that the geodesic deviation equation can be derived from the second covariant variation of the point particle’s action. Here it is shown that the second covariant variation of the string action leads to a string deviation equation. This equation is a candidate for ...

Following from the remarkable works of Cramer and Shoup [5], three trapdoor hash signature variations have been presented in the literature: the first variation was presented in CJE’01 by Zhu [14], the second variation was presented in SCN’02 by Camenisch and Lysyanskaya [3] and the third variation was presented in PKC’03 by Fischlin [7]. All three mentioned trapdoor hash signature schemes have...

The perturbation sensitivity and its influence on the limit loads of shells are widely discussed phenomena. Both phenomena may be classified with respect to the type of perturbation. As perturbations influence the stability of shells, the identification of unfavourable perturbations is essential. The perturbation energy concept enables to identify unfavourable non-initial perturbation loads and...

Wireless Local Area Networks have gained popularity at an unprecedented rate over the last few years. However, as the spectrum of applications they are called to support broadens, their inefficiency in meeting the diverse requirements of a wider range of applications becomes evident. Most existing access mechanisms cannot provide Quality-of-Service (QoS) assurances. Even those that are QoS awar...

The semi-classical approximation to black hole partition functions is not welldefined, because the classical action is unbounded and the first variation of the uncorrected action does not vanish for all variations preserving the boundary conditions. Both problems can be solved by adding a Hamilton-Jacobi counterterm. I show that the same problem and solution arises in quantum mechanics for half...