The paper investigates the structure of the reachable set of linear switched systems. The structure of the reachable set is determined using techniques from classical nonlinear systems theory, namely, the theory of orbits developed by H. Sussman and the realization theory for nonlinear systems developed by B. Jakubczyk.

Dealing with dialogues requires developing different levels of interpretation. An intention-based analysis must take into account discourse conventions and communication phenomena which shall result in coherent cooperative dialogues. The realisation of such a system is possible by distributing the tasks to independent agents. We show that the collaboration of these agents is possible by buildin...

Information Technology (IT) culture comprises of the set of IT-related behaviors, values and assumptions that tacitly frame how individuals make effective use of IT resources. Since effective IT use is linked to the realization of benefits from IT investments, individuals’ IT cultures should therefore have significant effect on their benefits realization capabilities. The purpose of this study ...

Algorithms for sliding block codes | an application of symbolic dynamics to information theory, IEEE Trans. then (w; x)j (?1;0) (w; x)j 0;1) 2 B s. The external behavior of a state realization is the system (Z; W; B) where B = fw : (w; x) 2 B s for some xg. The state realization may be regarded as a presentation of its external behavior, with the elements of X as states. A state realization of ...

We present a re-realization of David Wessel’s Antony (1977). Antony was originally composed using a novel set of additive synthesis techniques developed for the 4A and the PDP 11/40. Those techniques continued to play a role throughout Wessel’s life as an improviser, and inspired many of his students and colleagues. Our re-realization of Antony involves using those same techniques to reinterpre...

The adapter design pattern [1], commonly used for integration and evolution in component-based systems, is originally described by roles. In classbased systems, the conventional realization of the pattern maps these roles to classes. The recent appearance of mature languages supporting roles as first order programming constructs poses the question whether realizing this pattern directly in role...

Although the enterprise-wide benefits realization capability has been touted as the most robust way in which organisations can counter the still too common incidence of information systems failing to deliver their promised value, there has been no research to explore the validity of this claim. Consequently, the aim of this paper is to present the results of a three year, action research study,...

We consider a natural new inflationary model in broken supergravity based on an R symmetry. The model predicts a concrete relation between the amplitude of primordial density fluctuations and the scale of supersymmetry breaking. The observed value of the density fluctuations is obtained for the gravitino mass of order the weak scale along with a power-law spectral index considerably less than o...

Given a nonrational spectral density, minimality for square spectral factors with singularities in both the left and the right half planes is de ned. A parametrization of all minimal square spectral factors is then provided in terms of left inner divisors of a certain inner function depending only on the spectral density. Some results on matrix inner functions and minor complements on the Lindq...