KITopen

    Die KIT-Bibliothek

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    Geodätische Projekte für Archäologie und Denkmalschutz als Bestandteile eines praxisbezogenen Studium

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    Die Mitarbeit in archäologischen Projekten und bei Aufgaben des Denkmalschutzes bietet Studierenden die Möglichkeit, neue Technologien praktisch zu erproben, erprobte Technologien auf neue Probleme anzuwenden und kreative Lösungen zu entwickeln. Studierende können Projekte selbständig durchführen, ihre praktischen Erfahrungen erweitern und teilweise auch Auslandserfahrung sammeln

    Depiction of pneumothoraces in a large animal model using x-ray dark-field radiography

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    The aim of this study was to assess the diagnostic value of x-ray dark-field radiography to detect pneumothoraces in a pig model. Eight pigs were imaged with an experimental grating-based large-animal dark-field scanner before and after induction of a unilateral pneumothorax. Image contrast-to-noise ratios between lung tissue and the air-filled pleural cavity were quantified for transmission and dark-field radiograms. The projected area in the object plane of the inflated lung was measured in dark-field images to quantify the collapse of lung parenchyma due to a pneumothorax. Means and standard deviations for lung sizes and signal intensities from dark-field and transmission images were tested for statistical significance using Student’s two-tailed t-test for paired samples. The contrast-to-noise ratio between the air-filled pleural space of lateral pneumothoraces and lung tissue was significantly higher in the dark-field (3.65 ± 0.9) than in the transmission images (1.13 ± 1.1; p = 0.002). In case of dorsally located pneumothoraces, a significant decrease (−20.5%; p > 0.0001) in the projected area of inflated lung parenchyma was found after a pneumothorax was induced. Therefore, the detection of pneumothoraces in x-ray dark-field radiography was facilitated compared to transmission imaging in a large animal model

    Navigation mit mobilen Augmented Reality Systemen im Gelände

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    Internetspezifische Wettbewerbsverstöße

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    Die Arbeit untersucht in ihrem ersten Teil die Auswirkungen der UWG-Novelle und der jüngeren Rechtsprechung auf die Problemkreise der unverlangten E-Mail-Werbung, des Einsatzes von Hyperlinks und der Beeinflussung von Suchmaschinen. In ihrem zweiten Teil wendet sie sich der Bedeutung technischer Schutzmaßnahmen für die lauterkeitsrechtliche Bewertung zu

    Local Wellposedness of Nonlinear Maxwell Equations

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    In this work we establish a local wellposedness theory of macroscopic Maxwell equations with instantaneous material laws on domains with perfectly conducting boundary. These equations give rise to a quasilinear initial boundary value problem with characteristic boundary. We provide a priori estimates and a differentiability theorem in arbitrary regularity for the corresponding linear nonautonomous hyperbolic system of partial differential equations. A fixed point argument then yields a unique solution of the nonlinear problem in $H^m$ with $m \geq 3$. We further show a blow-up criterion in the Lipschitz-norm and the continuous dependance on the data
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