The European Union's digital assertiveness

The European institutions and EU member states are pushing hard for closer digital integration. In view of the diverse challenges -from protecting critical infrastructure and safeguarding civil liberties to the creation of common markets- "positive integration", that is targeted EU regulatory action, is the way to tackle market failure within and beyond Europe. Draft regulations at the EU level are to take effect inside and outside the internal market: the Digital Single Market Strategy (DSM), the General Data Protection Regulation (GDPR) and the Directive on Network and Information Security (NIS). Digital integration is a precondition for establishing European standards and norms effectively, especially in international politics. (Autorenreferat

Local foliation of manifolds by surfaces of Willmore type

We show the existence of a local foliation of a three dimensional Riemannian manifold by critical points of the Willmore functional subject to a small area constraint around non-degenerate critical points of the scalar curvature. This adapts a method developed by Rugang Ye to construct foliations by surfaces of constant mean curvature.Comment: Minor modifications, to appear in Ann. Inst. Fourier (Grenoble

How humanitarian are Germans towards refugees?

This paper uses data collected in May 2023 to better understand how Germans feel towards Syrian refugees. Generally, while feelings of different types of humanitarian concern (safety, material wellbeing, health, future opportunities) were similar, threat feelings (welfare, safety, culture) were slightly higher with the notable exception of less concern about labour market competition. We find that younger people, people with a university degree, or people with a migration background feel less threatened by the immigration of refugees with the most significant differences in attitudes towards refugees based on people’s social and political values. Respondents with stronger humanitarian orientations, higher trust levels and who do not place themselves on the right side of the political spectrum, show markedly higher levels of humanitarian concerns and lower threat perceptions. In addition to measuring attitudes, we also measured respondents’ solidarity towards refugees. Only 29 percent and 23 percent of respondents are willing to sign a petition in favour of financial aid to refugee camps or admissions to Germany, respectively. Respondents with higher levels of social trust are much more likely to express their support for more camp assistance than less trusting respondents. Regarding refugee admissions, a stark divide emerges along political lines, with individuals on the political left showing much greater openness to admitting refugees than those on the right. We find limited support for housing refugees in Germany, especially when asking for respondents’ willingness to accommodate refugees privately

How humanitarian are Germans towards refugees?

This paper uses data collected in May 2023 to better understand how Germans feel towards Syrian refugees. Generally, while feelings of different types of humanitarian concern (safety, material wellbeing, health, future opportunities) were similar, threat feelings (welfare, safety, culture) were slightly higher with the notable exception of less concern about labour market competition. We find that younger people, people with a university degree, or people with a migration background feel less threatened by the immigration of refugees with the most significant differences in attitudes towards refugees based on people’s social and political values. Respondents with stronger humanitarian orientations, higher trust levels and who do not place themselves on the right side of the political spectrum, show markedly higher levels of humanitarian concerns and lower threat perceptions. In addition to measuring attitudes, we also measured respondents’ solidarity towards refugees. Only 29 percent and 23 percent of respondents are willing to sign a petition in favour of financial aid to refugee camps or admissions to Germany, respectively. Respondents with higher levels of social trust are much more likely to express their support for more camp assistance than less trusting respondents. Regarding refugee admissions, a stark divide emerges along political lines, with individuals on the political left showing much greater openness to admitting refugees than those on the right. We find limited support for housing refugees in Germany, especially when asking for respondents’ willingness to accommodate refugees privately

How Machines are Serviced - Design of a Virtual Reality-based Training System for Technical Customer Services

Training service provider is a crucial factor for high-quality service delivery. Due to the rise of new devices, reviving Virtual Reality (VR) offer great opportunities to overcome current training challenges. As various new interaction and visualization systems push into market, guidance on how to design VR-based training systems is necessary. The presented use case is based on technicians in technical customer services (TCS) who tackle increasing complexity of machines. We fill the research gap of design knowledge by (1) analyzing the domain in a multi-method approach to elicit meta-requirements, (2) proposing design principles, and (3) instantiating them in a prototype. The interaction of the user with the training system was identified as key aspect to foster learning. We follow a design science research approach (DSR) combing the build-phase with agile evaluation cycles obtaining focus groups and demonstration with a prototype

Die digitale Selbstbehauptung der EU

Institutionen und Mitgliedstaaten der EU treiben derzeit mit Hochdruck die digitale Integration voran. In Anbetracht der vielfältigen Herausforderungen - vom Schutz kritischer Infrastrukturen über die Wahrung persönlicher Freiheitsrechte bis zur Schaffung grenzübergreifender Märkte - ist die "positive Integration", also regulative Vorgaben durch die EU, der richtige Weg, um gegen Marktversagen im Binnenmarkt und darüber hinaus anzugehen. Auf EU-Ebene sollen Regulierungen geschaffen werden, die inner- und außereuropäische Wirkung entfalten. Vehikel dazu sind die Strategie für einen digitalen Binnenmarkt (DSM), die Datenschutzgrundverordnung (DSGVO) und die Richtlinie zur Gewährleistung einer gemeinsamen Netzwerk- und Informationssicherheit (NIS). Die digitale Integration ist Voraussetzung dafür, europäische Standards und Normen auch in der internationalen Politik effektiver durchzusetzen. (Autorenreferat

Towards speech quality assessment using a crowdsourcing approach: evaluation of standardized methods

Subjective speech quality assessment has traditionally been carried out in laboratory environments under controlled conditions. With the advent of crowdsourcing platforms tasks, which need human intelligence, can be resolved by crowd workers over the Internet. Crowdsourcing also offers a new paradigm for speech quality assessment, promising higher ecological validity of the quality judgments at the expense of potentially lower reliability. This paper compares laboratory-based and crowdsourcing-based speech quality assessments in terms of comparability of results and efficiency. For this purpose, three pairs of listening-only tests have been carried out using three different crowdsourcing platforms and following the ITU-T Recommendation P.808. In each test, listeners judge the overall quality of the speech sample following the Absolute Category Rating procedure. We compare the results of the crowdsourcing approach with the results of standard laboratory tests performed according to the ITU-T Recommendation P.800. Results show that in most cases, both paradigms lead to comparable results. Notable differences are discussed with respect to their sources, and conclusions are drawn that establish practical guidelines for crowdsourcing-based speech quality assessment

Impact of the Number of Votes on the Reliability and Validity of Subjective Speech Quality Assessment in the Crowdsourcing Approach

The subjective quality of transmitted speech is traditionally assessed in a controlled laboratory environment according to ITU-T Rec. P.800. In turn, with crowdsourcing, crowdworkers participate in a subjective online experiment using their own listening device, and in their own working environment. Despite such less controllable conditions, the increased use of crowdsourcing micro-task platforms for quality assessment tasks has pushed a high demand for standardized methods, resulting in ITU-T Rec. P.808. This work investigates the impact of the number of judgments on the reliability and the validity of quality ratings collected through crowdsourcing-based speech quality assessments, as an input to ITU-T Rec. P.808 . Three crowdsourcing experiments on different platforms were conducted to evaluate the overall quality of three different speech datasets, using the Absolute Category Rating procedure. For each dataset, the Mean Opinion Scores (MOS) are calculated using differing numbers of crowdsourcing judgements. Then the results are compared to MOS values collected in a standard laboratory experiment, to assess the validity of crowdsourcing approach as a function of number of votes. In addition, the reliability of the average scores is analyzed by checking inter-rater reliability, gain in certainty, and the confidence of the MOS. The results provide a suggestion on the required number of votes per condition, and allow to model its impact on validity and reliability.Comment: This paper has been accepted for publication in the 2020 Twelfth International Conference on Quality of Multimedia Experience (QoMEX