Jauch, C., Hippel, S., & Ritschel, U. (2019). Hydraulic-pneumatic flywheel configurations for controlling the inertia of a wind turbine rotor. Wind Engineering, 43(2), 19. http://doi.org/10.1177/0309524X18780386
Lübben, R., & Morgenroth, J. (2019). An Odd Couple: Loss-Based Congestion Control and Minimum RTT Scheduling in MPTCP. In IEEE Local Computer Networks. http://doi.org/10.1109/LCN44214.2019.8990831
Dohse, F., Nicolaisen, V., Wetzel, S., & Bertel, S. (2019). Potential of AR for the Analysis and Training of Spatial Skills: A Case Study. In Proceedings of Mensch Und Computer 2019 (S. 537–541). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3340764.3344453
Abstract
Good spatial skills are of particular importance in STEM domains. For the training of spatial skills, smartphones provide a promising platform because of their high dissemination. Additionally, new frameworks make it easy to develop and use augmented reality (AR) contents. To examine the potential of AR for the training of spatial skills, we developed a prototype of a smartphone app for the solving of cross section tasks.The prototype was tested in a user study with 32 university students. It was compared against a second prototype with a classical Arcball interaction. For both prototypes, success rates were equally high. However, 3D-objects could be rotated faster using the AR-app. For the AR-app, participants reported higher scores regarding innovation and motivation but also for physical demands. This is especially interesting because motor activity and spatial skills are highly connected. Therefore, the physical approach might be promising for the development of spatial skill training apps which might lead to good long-term training results.
Rohr, A., & Jauch, C. (2019). Large Scale Test Bench for Emulating Grid Connected Wind Turbines of Different Sizes. 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG). http://doi.org/10.1109/CPE.2019.8862408
Ebbers, I. (2019). Entrepreneurship Education als Möglichkeits- und Ermöglichungsraum - eine erste theoretische Annäherung aus fachdidaktischer Perspektive. Entrepreneurship Education : Begriff - Theorie - Verständnis. Wiesbaden, Germany: Springer Gabler. http://doi.org/10.1007/978-3-658-27327-9_3 [DOI]
Pedersen, R., & Uzunkol, O. (2019). Secure Delegation of Isogeny Computations and Cryptographic Applications. In Proceedings of the 2019 ACM SIGSAC Conference on Cloud Computing Security Workshop (S. 29–42). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3338466.3358913
Abstract
We address the problem of speeding up isogeny computation for supersingular elliptic curves over finite fields using untrusted computational resources like third party servers or cloud service providers (CSPs). We first propose new, efficient and secure delegation schemes. This especially enables resource-constrained devices (e.g. smart cards, RFID tags, tiny sensor nodes) to effectively deploy post-quantum isogeny-based cryptographic protocols. To the best of our knowledge, these new schemes are the first attempt to generalize the classical secure delegation schemes for group exponentiations and pairing computation to an isogeny-based post-quantum setting. Then, we apply these secure delegation subroutines to improve the performance of supersingular isogeny-based zero-knowledge proofs of identity. Our experimental results show that, at the 128-bit quantum-security level, the proving party only needs about 3% of the original protocol cost, while the verifying party s effort is fully reduced to comparison operations. Lastly, we also apply our delegation schemes to decrease the computational cost of the decryption step for the NIST postquantum standardization candidate SIKE.