https://opendata.uni-halle.de//handle/1981185920/6693 2026-04-09T18:53:55Z https://opendata.uni-halle.de//handle/1981185920/124820 Title: Beyond the sticky note : towards a theory of Cognitive Adoption in digital health using the example of Augmented Living Spaces Author(s): Böhmer, Martin Abstract: Although digital health technologies could support people with cognitive impairment, adoption among individuals with mild cognitive impairment (aMCI) is low because many systems impose high cognitive demands and do not align with everyday routines or trust needs. This dissertation presents a Cognitive Adoption Theory, developed through multi-cycle Design Science Research, the iterative design and evaluation of Augmented Living Spaces (a spatial augmented reality and AI-enhanced home concept) and ConZones (an embodied interaction approach using position-sensitive projection zones). Through a combination of methods, the dissertation presents a theory that links cognitive perspectives, adoption, health behaviour change, and metacognition. The dissertation also provides design principles and ethical guidance for synthetic image data in AI health settings, as well as reference architectures for cognitively inclusive digital health technologies that support autonomy and sustained use today. 2025-01-01T00:00:00Z https://opendata.uni-halle.de//handle/1981185920/124787 Title: Development and application of single pollen nucleus genotyping and virus tools for meiotic gene and recombination studies in barley (Hordeum vulgare L.) Author(s): Tamilselvan Nattar Amutha, Suriya Abstract: Meiotic recombination generates genetic diversity and is essential for plant breeding, but crossover (CO) formation is tightly regulated and unevenly distributed in crops such as barley. Whether mechanisms identified in Arabidopsis thaliana also apply to barley remains unclear. This work establishes two complementary tools to study and modify the CO landscape in barley (Hordeum vulgare L.): multiplex single nucleus pollen genotyping (SNPG) and Barley stripe mosaic virus-induced genome editing (BSMVIGE). SNPG enables rapid measurement of male CO rates and interference, detecting up to four-fold increases in HvRECQ4 mutants. BSMVIGE allows efficient targeted editing of meiosis-related genes, including HvASY1, HvZYP1, and HvSCEP3. Depletion of synaptonemal complex components reduced chiasmata and fertility, highlighting their essential role in barley CO formation. 2026-01-01T00:00:00Z https://opendata.uni-halle.de//handle/1981185920/124783 Title: Contributions to analytical, consistent modelling of borehole heat exchangers and ground heat collectors Author(s): Ven, Adinda Abstract: This thesis presents an overarching, consistent modelling methodology for shallow geothermal systems. The computational domain is divided into two sections using different modelling approaches. The source system, including installation effects, is described by analytical thermal resistance models and, where required, extended by capacity models. The surrounding subsurface and relevant surface influences are modelled using extensions of the instantaneous point source solution. Further relevant thermal effects are captured by approximate solutions as a complementary approach. The methodology is demonstrated by three applications. The first investigates grouted borehole heat exchangers with groundwater advection. The second analyses the thermal behaviour of a planar trench collector and its surrounding soil. The third presents a complementary solution for subsurface freezing and thawing around ground heat collectors, implemented for both a horizontal pipe system and a trench collector. 2025-01-01T00:00:00Z https://opendata.uni-halle.de//handle/1981185920/124774 Title: Entwicklung eines hydrothermalen Verfahrens zur Extraktion von Blei aus Kathodenstrahlrohr(CRT)-Altgläsern Author(s): Storch, Konstantin Abstract: Im Rahmen der vorliegenden Arbeit werden bleihaltige CRT-Gläser für die Entwicklung und Beschreibung eines hydrothermalen Recyclingverfahrens verwendet. Dabei erfolgt das Recycling der Gläser über eine doppelte, hydrothermale Behandlung, bei der CRT-Glas zunächst in einer alkalischen, wässrigen Lösung und anschließend in einer sauren, wässrigen Lösung extrahiert wird. Die Untersuchung und Beschreibung des Einflusses der Prozessparameter auf die behandelten CRT-Gläser erfolgt anhand der Charakterisierung der festen Produkte. Die Untersuchung der Zusammensetzung der alkalischen und sauren Lösungen findet mittels elektrochemischer Methoden oder indirekt über die Elementoxid-spezifischen Massenverluste der Feststoffe statt. Durch die hydrothermalen Behandlungen werden die Bleioxid-Gehalte der verwendeten Feststoffe deutlich reduziert und gleichzeitig die BET-Oberfläche und die Porenvolumina des extrahierten Ausgangsglases erhöht. 2026-01-01T00:00:00Z