Privatisierung von Polizeiaufgaben im Spannungsfeld zwischen geringer Ressourcen der Polizei und dem Eingriff in das hoheitliche Handeln - Dargestellt am Beispiel der Citystreife

In dieser Arbeit werden zunächst die rechtlichen Rahmenbedingungen zur Privatisierung von Polizeiaufgaben dargestellt. Anschließend wird im speziellen die City-Streife vorgestellt, deren Rechte beleuchtet und Erfahrungen von Kommunen, Polizei und einer Fahrt mit der City-Streife eingebracht. Letztendlich wird ein möglicher Eingriff in hoheitliche Rechte überprüft

The DiFuPaRo database

The DiFuPaRo database is one of the outputs of the research project “Distribution and Function of ‘Partitive articles’ in Romance (DiFuPaRo): a microvariation analysis” funded by the Swiss National Science Foundation (SNSF) and the Deutsche Forschungsgemeinschaft (DFG) (SNSF ID: 100012L_172751, DFG ID: PO1642/8-1) and directed by Elisabeth Stark (University of Zurich) and Cecilia Poletto (University of Frankfurt). [3] The database is available at https://difuparo.linguistik.uzh.ch. It is an open-access source for scientific purposes and can be accessed via a web interface mentioned above, both for data storage and query

Hard X-ray nano-holotomography with a Fresnel zone plate

X-ray phase contrast nanotomography enables imaging of a wide range of samples with high spatial resolution in 3D. Near-field holography, as one of the major phase contrast techniques, is often implemented using X-ray optics such as Kirkpatrick-Baez mirrors, waveguides and compound refractive lenses. However, these optics are often tailor-made for a specific beamline and challenging to implement and align. Here, we present a near-field holography setup based on Fresnel zone plates which is fast and easy to align and provides a smooth illumination and flat field. The imaging quality of different types of Fresnel zone plates is compared in terms of the flat-field quality, the achievable resolution and exposure efficiency i.e. the photons arriving at the detector. Overall, this setup is capable of imaging different types of samples at high spatial resolution of below 100 nm in 3D with access to the quantitative phase information