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Electron Scattering in Liquid Water and Amorphous Ice: A Striking Resemblance
(2020)The lack of accurate low-energy electron scattering cross sections for liquid water is a substantial source of uncertainty in the modelling of radiation chemistry and biology. The use of existing amorphous ice scattering cross sections for lack of liquid data has been discussed controversially over decades. Here, we compare experimental photoemission data of liquid water with corresponding predictions using amorphous ice cross sections, ...Working Paper -
ARNOLD HARTLEY GIBSON: Hydraulics professor and textbook author
(2022)The United Kingdom was the leading nation in the 19th century, then the British Empire. Despite this fact, hydraulic engineering was not a main concern. Scientists rather worked in maritime hydraulics and naval architecture. In all the above three topics, textbooks were not really available, because both engineers and scientists rather published their works in scientific journals. Gibson, an indirect successor of Osborne Reynolds at the ...Working Paper -
December Fever in Public Finance
(2020)KOF Working PapersPublic spending often increases at the end of fiscal years. This is undesirable because late spending tends to be inefficient. The causes for these spending spikes are however poorly understood. This paper offers a novel identification strategy that relies on the historic variation in countries’ fiscal years to analyze their effect on government disbursements. We show that the end of fiscal years rather than alternative explanations ...Working Paper -
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Exact and Practical Pattern Matching for Quantum Circuit Optimization
(2020)arXivQuantum computations are typically compiled into a circuit of basic quantum gates. Just like for classical circuits, a quantum compiler should optimize the quantum circuit, e.g. by minimizing the number of required gates. Optimizing quantum circuits is not only relevant for improving the runtime of quantum algorithms in the long term, but is also particularly important for near-term quantum devices that can only implement a small number ...Working Paper -
Revisiting the equality conditions of the data processing inequality for the sandwiched Rényi divergence
(2020)arXivWe provide a transparent, simple and unified treatment of recent results on the equality conditions for the data processing inequality (DPI) of the sandwiched quantum Rényi divergence, including the statement that equality in the data processing implies recoverability via the Petz recovery map for the full range of α recently proven by Jen\v cová. We also obtain a new set of equality conditions, generalizing a previous result by Leditzky et al.Working Paper -
SPHERE+: Imaging young Jupiters down to the snowline
(2020)arXivSPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a variety of operating modes, primarily in the field of direct imaging of exoplanetary systems, focusing on exoplanets as point sources and circumstellar disks as extended objects. The achievements obtained thus far with SPHERE (~200 refereed publications) in ...Working Paper -
Vocational Training and Employment Outcomes of Domestic Violence Victims: Evidence from Preliminary Data on Chihuahua City
(2021)CES Working PapersThis study uses a novel data set provided by the women justice centre (WJC) in Chihuahua City in Mexico, to analyse the impacts of vocational training workshops on employment outcomes of 116 domestic violence victims. Based on the analysis of a difference-in-differences strategy, I find that women who attended vocational training courses at the WJC were about 2.5 times more likely to be employed after. Additional results provide evidence ...Working Paper -
Reviews and syntheses: The promise of big soil data, moving current practices towards future potential
(2021)Biogeosciences DiscussionsIn the age of big data, soil data are more available than ever, but -outside of a few large soil survey resources- remain largely unusable for informing soil management and understanding Earth system processes outside of the original study. Data science has promised a fully reusable research pipeline where data from past studies are used to contextualize new findings and reanalyzed for global relevance. Yet synthesis projects encounter ...Working Paper -
The Time-Triggered Wireless Architecture
(2020)arXivWirelessly interconnected sensors, actuators, and controllers promise greater flexibility, lower installation and maintenance costs, and higher robustness in harsh conditions than wired solutions. However, to facilitate the adoption of wireless communication in cyber-physical systems (CPS), the functional and non-functional properties must be similar to those known from wired architectures. We thus present Time-Triggered Wireless (TTW), ...Working Paper