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We use bounds of exponential sums to show that for a wide class of parameters the modification of the DSA signature scheme proposed by A. K. Lenstra at Asiacrypt’96 is as secure as the original scheme.

2D vessel segmentation algorithms working on 2D digital subtraction angiography (DSA) images suffer from inhomogeneous contrast agent distributions within the vessels. In this work, we present a novel semi-automatic vessel segmentation method based on local adaptive contrast enhancement. Either a forward projected 3D centerline or a set of manual selected seed points define the vessel branches ...

In this paper we describe a region-oriented segmentation algorithm suited for the detection and extraction of large blood vessels in angiographic images. The algorithm is based on the mathematical morphology top-hat operator followed by a binary region growing process. The combination of these two steps generates an image containing only the largest vessels regions, allowing a fully automatic s...

Kurzfassung Der Beitrag beschreibt die Software-Architektur DANA (Distributed Systems Architecture for Networks in Automotive Environments), mit der komponentenbasierte verteilte Systeme für die Fahrzeugtelematik dynamisch zusammengebaut werden können. Im Gegensatz zu den verbreiteten Technologien, die ein Zusammenbau von „Off-The-Shelf“-Komponenten mit Hilfe von Tools erlauben, werden Komponen...

Forced alignment would enable phonetic analyses of child directed speech (CDS) corpora which have existing transcriptions. But existing alignment systems are inaccurate due to the atypical phonetics of CDS. We adapt a Kaldi forced alignment system to CDS by extending the dictionary and providing it with heuristically-derived hints for vowel locations. Using this system, we present a new time-al...

Wegen des zu sichernden Investitionsvolumens von mehr als eintausend Personenjahren kam nur eine 1:1-Migration in Frage, bei der sowohl die Programmund Job-Sourcen als auch die Daten automatisiert konvertiert werden. Bedingt durch eine phasenweise Vorgehensweise, in der einzelne Anwendungen paketweise migriert werden, entstand für eine Übergangszeit ein Hybridsystem, in dem das alte GCOS-System...

We consider the issue of determining the D0-D̄0 width difference ∆ΓD experimentally. The current situation is reviewed and suggestions for further study are given. We propose a number of D0 decay modes in addition to those studied in the recent E791, FOCUS and BELLE lifetime determination experiments. Then we address prospects for determining CF CDS strong phase differences, like δKπ which appea...