Publikationen

2025

• Alexander Tessmer, Nils Aschenbruck
  "Characterization of an Acoustic Sensor Network to Improve Clock Synchronization Strategies"
  Proc. of the 50th IEEE Conference on Local Computer Networks
  LCN, Sydney, Australia, Oct. 14-16, 2025, [ pdf].

2024

• Alexander Tessmer, Jannis Mast, Philipp Loer, Matthias Brunner, Felix Lippert, Nils Aschenbruck
  "An Open Source Trusted Edge Architecture of Federated Dataspaces for the Food Supply Chain"
  Poster in the Proc. of the 7th IFIP International Internet of Things Conference
  IFIP-IoT, Nice, France, Nov. 6-8, 2024, [ pdf].
• Alexander Tessmer, Leonhard Brüggemann, Nils Aschenbruck
  "RBS-based Time Synchronization Approach with Autonomous Acoustic Sensors – a Simulative Proof of Concept"
  Proc. of the IEEE 5th International Symposium on the Internet of Sounds
  IS², Erlangen, Germany, Sep. 30 - Oct. 2, 2024, [ pdf].

2023

• Alexander Tessmer, Nils Aschenbruck
  "Using Dynamic Time Warping to Calibrate Low-Cost Soil Moisture Sensors"
  Proc. of the 5th international Workshop on Smart Living with IoT, Cloud, and Edge Computing
  in conjunction with the 20th IEEE International Conference on Mobile Ad-Hoc and Smart Systems
  SLICE@MASS, Toronto, Canada, Sep. 25-27, 2023, pp. 64-72, [ pdf].
• Cornelius Wolff, Alexander Tessmer, Nils Aschenbruck
  "A New Approach on Estimating Germany's Mobile Broadband Coverage based on Crowdsourced Data"
  Proc. of the 27. VDE/ITG-Fachtagung Mobilkommunikation
  ITG-Fb. 311, Osnabrück, Germany, May 10-11, 2023, [ pdf].

2022

• Alexander Tessmer, Bjoern Bourdon, Yannic Toschke, Mirco Imlau, Nils Aschenbruck
  "Enhancing an Open Source IoT System for Vertical System Integration in Photonics"
  Proc. of the 8th IEEE World Forum on Internet of Things
  WF-IoT, Yokohama, Japan, Oct.26 - Nov.11, 2022, [ pdf].
• Yannic Toschke, Janet Lusmoeller, Lars Otte, Johann Schmidt, Svenja Meyer, Alexander Tessmer, Christian Brockmann, Milena Ahuis, Emma Hüer, Christian Kirberger, Dirk Berben
  "Distributed LoRa based CO₂ monitoring network - A standalone open source system for contagion prevention by controlled ventilation"
  SI: Special Issue: COVID-19 Medical Hardware, HardwareX, 2022, [ pdf].

2020

• Alexander Tessmer, Thomas Hänel, Nils Aschenbruck
  "On the Impact of Geographic Restrictions on Contact Metrics in Opportunistic Networks"
  Proc. of the 45th IEEE LCN Symposium on Emerging Topics in Networking
  LCN, virtually hosted in Sydney, Australia, Nov. 16-19, 2020, 131-140, [ pdf].
•  Jan Bauer, Yannic Toschke, Alexander Tessmer, Björn Bourdon, Nils Aschenbruck, Mirco Imlau
  "An Open Source IoT Framework for a Distributed Modular Low-Cost Laser-Based Sensing Platform"
  Proc. of IEEE Sensors, Oct. 25-28, 2020, [ pdf].
•  Alexander Tessmer
   "Auswirkungen geografischer Restriktionen auf Kontaktmetriken in opportunistischen Netzen"
   Master Thesis, University of Osnabrück, April 2020.

Lehre