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Promoting secure Email communication and authentication
(2017)Mensch und Computer 2017 - WorkshopbandNowadays, the possibility to communicate securely is crucial for users in the private as well as in the business context. However, to do so they have to face problems regarding mismatching mental models of encryption and bad usability not only concerning the encryption, but also the authentication process. To solve this problem, we evaluate users perception on encryption and authentication schemes in order to (1) derive a process, which ...Conference Paper -
Security vs. privacy? User preferences regarding text passwords and biometric authentication
(2017)Mensch und Computer 2017 - WorkshopbandAlthough text passwords suffer from several flaws, they are still wide-spread. Biometric authentication schemes are one possible alternative.However, previous study results suggest there might be two user groups preferring either knowledge-based or biometric authentication, due to different reasons. We conducted an online survey with 95 German participants to test this assumption. Our results provide evidence for the existence of two user ...Conference Paper -
Hybrid Air-Conditioning for Electric Vehicles by Combining a Heating and a Desiccant System
(2017)26th Aachen Colloquium Automobile and Engine TechnologyConference Paper -
Evaluating different upscaling approaches to derive the actual power of distributed PV systems
(2017)The power generated by distributed PV systems within a given region is an important information e.g. for grid operators. But PV power measurements are often only available for a small fraction of systems. Hence, various upscaling approaches estimate the power of a large number of unmeasured photovoltaic systems based on these measured reference units. This paper evaluates the application of different methods for upscaling PV power. Results ...Conference Paper -
Giuseppe Sommaruga (1867–1917). Un protagonista del liberty
(2017)Giuseppe Sommaruga (1867–1917). Un protagonista del liberty. Catalogo della mostraConference Paper -
Broadband electromechanical spectroscopy: A method for measuring the dynamic electromechanical response of ferroelectrics
(2017)Conference Proceedings of the Society for Experimental Mechanics Series ~ Micro and NanomechanicsConference Paper -
Enabling Independent Navigation for Visually Impaired People through a Wearable Vision-Based Feedback System
(2017)2017 IEEE International Conference on Robotics and Automation (ICRA)This work introduces a wearable system to provide situational awareness for blind and visually impaired people. The system includes a camera, an embedded computer and a haptic device to provide feedback when an obstacle is detected. The system uses techniques from computer vision and motion planning to (1) identify walkable space; (2) plan step-by-step a safe motion trajectory in the space, and (3) recognize and locate certain types of ...Conference Paper -
Zur Erhaltung des nicht Haltbaren
(2017)Veröffentlichungen des Arbeitskreises Theorie und Lehre der Denkmalpflege ~ Das Digitale und die Denkmalpflege: Bestandserfassung-Denkmalvermittlung-Datenarchivierung-Rekonstruktion verlorener Objekte: Chancen und Grenzen im Einsatz digitaler Technologien: Veränderungen in der Praxis von Denkmalpflege und KulturgutsicherungConference Paper -
Enriched Nudges Lead to Stronger Password Replacements ... but Implement Mindfully
(2017)Proceedings of the 2017 Information Security for South Africa Conference (ISSA)People usually respond to enforced changes caused by password expiry by making each successive password weaker. This is because the effort involved in memorising a password cannot be amortised over a period of time. To ensure retention they use a password they know they will not forget. This paper explores the password-changing behaviour of the participants exposed to an enriched nudge intervention. The enriched nudge combined a traditional ...Conference Paper -
A Plasticity Model for 1D Soil Response Analysis
(2017)COMPDYN 2017: Computational Methods in Structural Dynamics and Earthquake Engineering. Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake EngineeringA plasticity model is presented for the non-linear ground response analysis of layered sites. The model is the one-dimensional version of that recently proposed by Tasiopoulou and Gerolymos (2016) for sand behavior, designated as TA-GER sand model. Critical state compatibility for monotonic and cyclic loading, anisotropic plastic flow rule and Bouc-Wen motivated hardening law are among the key-features of the developed 1D model, offering ...Conference Paper