This paper is concerned with parameterized reachability trees, which have been proposed by M. Lindquist for predicate/transition nets. We discuss the application of this concept to algebraic nets. For this purpose a slight modification of several definitions is necessary due to the different net descriptions, transition rules and theoretical backgrounds. That’s why we present the whole concept ...

In this paper I will investigate the contribution of roots to the syntactic and semantic properties of verbs. From the point of view of a formal semanticist ∗This work developed from joint work with the members of the projects B4 and of the long-term research-project Incremental Specification in Context, funded by the Deutsche Forschungsgemeinschaft. I wish to thank an anonymous reviewer, Boris...

We construct 4-dimensional cosmological FRW–models by compactifying a black 5brane solution of type IIB supergravity, which carries both magnetic NS-NS-charge and RR-charge. The influence of nontrivial RR-fields on the dynamics of the cosmological models is investigated. Work supported by the DFG through SFB 375-95 and the European Commission TMR programs ERBFMX-CT96-0045 and ERBFMRX-CT96-0090 ...

Zusammenfassung: In dem vorliegenden Beitrag werden Sicherheitskonzepte und -mechanismen vorgestellt, die im Rahmen des Projekts Q6 des SFB 414 für den Einsatz in medizinischen Informationssystemen entwickelt wurden. Aufbauend auf einer detaillierten Analyse der sicherheitstechnischen Anforderungen sind dabei Verfahren zur Absicherung von Patientendaten in klinischen Umgebungen mit stark wechse...

We investigate the rare radiative eta decay modes η → π+π−γγ and η → π0π0γγ within the framework of chiral perturbation theory at O(p4). We present photon spectra and partial decay rates for both processes as well as a Dalitz contour plot for the charged decay. PACS numbers: 12.39.Fe 11.30.Rd 13.25.Jx Typeset using REVTEX †Present address: Department of Physics and Astronomy, University of Mass...

INGARCH models for time series of counts arising, e.g., in epidemiology assume the observations to be Poisson distributed conditionally on the past, with the conditional mean being an affinelinear function of the previous observations and the previous conditional means. We model outliers within such processes, assuming that we observe a contaminated process with additive Poisson distributed con...

Information systems are challenging applications in the field of software process improvement. The reuse of experience from the software developing and maintenance process is a key technology in this area of improvement. One approach which supports the comprehensive reuse of experience is the Quality Improvement Paradigm (QIP) by Basili et. al. [4]. In this approach, all kinds of knowledge, lik...

The Collaborative Research Center 588 "Humanoid Robots Learning and Cooperating Multimodal Robots" was established in July 2001 by the Germany Research Foundation (Deutsche Forschungsgemeinschaft: DFG) and will run until June 2012. The goal of this interdisciplinary research project is the development of humanoid robots which resemble humans in their ways of acting in the world, of reasoning ab...

Welfare-state measures often tend to persist even when they seem to have become suboptimal due to changes in the economic environment. This paper proposes an information-based explanation for this welfare-state persistence. I present a structural model where rationally inattentive voters decide upon implementations and removals of social insurance. In this model, welfarestate persistence arises...