1. Overcoming the central planner approach – Bilevel optimization of the European energy transition 

   Shu, David; Reinert, Christiane; Mannhardt, Jacob; et al. (2024)

   iScience

   The energy transition is a multinational challenge to mitigate climate change, with a joint reduction target for greenhouse gas emissions. Simultaneously, each country is interested in minimizing its own energy supply cost. Still, most energy system models neglect national interests when identifying cost-optimal transition pathways. We design the European energy system transition until 2050, considering competition between countries in a ...

   Journal Article

2. Continuous Optimization DAG Learning in the Presence of Location Scale Noise: A Systematic Evaluation of Different Frameworks 

   Kahlbacher, Fabian (2023)

   Causal discovery concerns the problem of learning the causal structures between variables of a system from observational data. To tackle the computational complexity when mul- tiple variables are involved, continuous optimization is a growing area. However, most approaches rely on additive noise, and no systematic evaluation of non-additive location- scale noise (LSN) has been performed. Modeling LSN or heteroscedasticity is important as ...

   Master Thesis

3. Fault-Tolerant Distributed Directories 

   Beestermöller J.; Busch C.; Wattenhofer R. (2024)

   Leibniz International Proceedings in Informatics, LIPIcs

   Many fundamental distributed computing problems require coordinated access to a shared resource. A distributed directory is an overlay data structure on an asynchronous graph G that helps to access a shared token t. The directory supports three basic operations: publish, to initialize the directory, lookup, to read the contents of the token, and move, to get exclusive update access to the token. There are known directory schemes that ...

   Conference Paper

4. Contrasting global patterns of soil microbial quotients of carbon, nitrogen, and phosphorus in terrestrial ecosystems 

   Gao, Decai; Shi, Wenjiao; Wang, Huimin; et al. (2024)

   Catena

   The microbial quotient of soil, defined as the proportion of soil elements present in soil microorganisms, reflects the capacity of microbial communities to regulate processes like organic matter decomposition and nutrient cycling. These processes are vital for ecosystem functioning, supporting plant growth, and maintaining soil fertility. However, the global scale's magnitude and drivers of soil microbial quotients remain elusive. This ...

   Journal Article

5. Abundant hydrocarbons in the disk around a very-low-mass star 

   Arabhavi A.M.; Kamp I.; Henning T.; et al. (2024)

   Science

   Very-low-mass stars (those less than 0.3 solar masses) host orbiting terrestrial planets more frequently than other types of stars. The compositions of those planets are largely unknown but are expected to relate to the protoplanetary disk in which they form. We used James Webb Space Telescope mid-infrared spectroscopy to investigate the chemical composition of the planet-forming disk around ISO-ChaI 147, a 0.11-solar-mass star. The inner ...

   Journal Article

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