Mapping Demonstrations of a Sustainability Policy Crisis: Online and Offline Events during the Dutch Nitrogen Crisis

in this research, I study the Nitrogen Crisis by comparing Twitter content to real-life events, answering the following research question: How does the intensity of emotions and discussed topics on social media relate to the characteristics of real-life demonstrations during a sustainability policy crisis? To characterise online events,...

Uniform Gain Beamforming in 60 GHz Communications

Wireless data traffic is growing rapidly as the number of mobile devices increase and video contents become more popular. As 2.4\,GHz and 5\,GHz band communications only provide limited bandwidth, these frequency bands cannot support the demand of ultra-high data rate. Millimeter-wave (mmWave) communications promise massive available bandwidth...

Codebook Selection Strategies in Long-range Sub-1 GHz WLANs

The new long-range WLANs will enable a simple and cost-efficient setup of wireless ambient systems, including smart city and smart grid communication networks. The emerging IEEE 802.11ah WLAN standard utilizes carrier frequencies at 900 MHz in the ISM-band and facilitates multi-antenna MIMO-OFDM. In order to further increase the wireless...

Post-Processing Method for Single Channel Speech Enhancement Systems

Boosting the performance of a conventional speech enhancement system by applying post-processing restoration modules. The speech production process is modeled with linear prediction analysis (LPA). This yields to a two step problem: enhancement of the spectral envelope obtained after conducting LPA to the output signal of a conventional speech...