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This study identifies supply options for sustainable urban energy systems, which are robust to external system changes. A multi-criteria optimization model is used to minimize greenhouse gas (GHG) emissions and financial costs of a reference system. Sensitivity analyses examine the impact of changing boundary conditions related to GHG emissions, energy prices, energy demands, and population density. Options that align with both financial and emission reduction and are robust to system changes are called “no-regret” options. Options sensitive to system changes are labeled as “potential-risk” options.
There is a conflict between minimizing GHG emissions and financial costs. In the reference case, the emission-optimized scenario enables a reduction of GHG emissions (-93%), but involves higher costs (+160%) compared to the financially-optimized scenario.
No-regret options include photovoltaic systems, decentralized heat pumps, thermal storages, electricity exchange between sub-systems and with higher-level systems, and reducing energy demands through building insulation, behavioral changes, or the decrease of living space per inhabitant. Potential-risk options include solar thermal systems, natural gas technologies, high-capacity battery storages, and hydrogen for building energy supply.
When energy prices rise, financially-optimized systems approach the least-emission system design. The maximum profitability of natural gas technologies was already reached before the 2022 European energy crisis.
Quantum magnetometry based on optically detected magnetic resonance (ODMR) of nitrogen vacancy centers in diamond nano or microcrystals is a promising technology for sensitive, integrated magnetic-field sensors. Currently, this technology is still cost-intensive and mainly found in research. Here we propose one of the smallest fully integrated quantum sensors to date based on nitrogen vacancy (NV) centers in diamond microcrystals. It is an extremely cost-effective device that integrates a pump light source, photodiode, microwave antenna, filtering and fluorescence detection. Thus, the sensor offers an all-electric interface without the need to adjust or connect optical components. A sensitivity of 28.32nT/Hz−−−√ and a theoretical shot noise limited sensitivity of 2.87 nT/Hz−−−√ is reached. Since only generally available parts were used, the sensor can be easily produced in a small series. The form factor of (6.9 × 3.9 × 15.9) mm3 combined with the integration level is the smallest fully integrated NV-based sensor proposed so far. With a power consumption of around 0.1W, this sensor becomes interesting for a wide range of stationary and handheld systems. This development paves the way for the wide usage of quantum magnetometers in non-laboratory environments and technical applications.
Partizipatives Design (PD) ermöglicht den Einbezug von Nutzer:innen in den Entwicklungsprozess digitaler Technologien im Gesundheitswesen. Der Einsatz von PD birgt jedoch Hürden, da theoretische und methodische Entscheidungen zu treffen sind. Oftmals werden diese in Forschungsarbeiten in der Versorgungsforschung nicht hinreichend dargestellt oder begründet. Dies kann zu einer eingeschränkten Bewertbarkeit und Nachvollziehbarkeit der Ergebnisse führen. Der vorliegende Beitrag thematisiert drei Schwerpunkte: Erstens wird ein Überblick über die wesentlichen theoretischen und methodischen Entscheidungen gegeben, die im Rahmen des PD aus Perspektive der Versorgungsforschung getroffen werden müssen. Zweitens werden die damit einhergehenden Herausforderungen aufgezeigt und drittens Erfordernisse für die zukünftige Anwendung und (Weiter-)Entwicklung des PD in der Versorgungsforschung beschrieben.