Naturwissenschaften, Mathematik und Informatik
Recent Submissions
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Algorithms for Matching and Analysis Problems on Subsequences
(2024-10-14)The focus of this thesis is on the study of efficient algorithms and computational complexity results for matching and analysis problems on subsequences. The presented results comprise algorithmic solutions and lower ... -
Mycorrhizal mediation of nutrient distribution and stress responses in beech and conifer mixtures
(2024-10-14)With global warming, drought is a rising concern for forests worldwide. In Central Europe, drought has caused severe diebacks of Norway spruce (Picea abies), the most common and economically relevant tree species. ... -
Wachstum und waldbauliche Behandlung der Roteiche (Quercus rubra L.) in Nordwestdeutschland
(2024-10-14)Seventy years after the first monographs on the Northern Red Oak (Quercus rubra L.) for West Germany (Bauer 1953a) and East Germany (Göhre and Wagenknecht 1955) were published, this work is once again devoted to growth, ... -
The role of pragmatics in early word learning
(2024-10-10)Young children show remarkable abilities in learning words from highly ambiguous surroundings. Regardless how many languages they learn, they seem to have no effort in linking a novel word to its correct meaning. ... -
Utilizing HPC Systems to Serve Compute-Intensive Tasks from a Data Lake Managing Sensitive Data
(2024-10-10)Data lakes have been proposed by James Dixon in 2010 to prevent information loss happening during the extract-transform-load process usually employed to ingest data into a data warehouse. Instead, he proposed a schema-on-read ... -
Exploring Stickiness in CAT(κ) Spaces
(2024-10-10)The Fréchet mean is a natural generalization of the expectation to probability distributions on arbitrary metric spaces. In recent years, several seemingly related phenomena were observed for certain distributions on ... -
Improving the wellbeing of smallholder coffee farmers at Masaba (Mount Elgon) in Uganda: An investigation of challenges and resources
(2024-10-08)The coffee sector in Uganda is of great socio-economic importance for the country. For many smallholder farmers in the Masaba region (Mount Elgon) in Uganda, the cultivation of Arabica coffee is the most important source ... -
Novel machine learning solutions for precision medicine - from causal inference to cellular perturbations and interactions
(2024-10-04)Optimal therapy of complex diseases necessitates a shift from one-size-fits-all solutions towards personalized treatment plans. To achieve this, it is crucial to understand the casual effect of medical interventions, such ... -
Mechanistic Studies on flat and stepped Palladium Single Crystal Surfaces: Experimental Evidence of Reaction Intermediates for the Decomposition of Formic Acid and Oxidation of Ammonia
(2024-10-04)In this work, experimental and theoretical investigations of formic acid desorption, decomposition and ammonia oxidation on single crystal palladium surfaces are presented. The formic acid system is investigated using a ... -
Economic implications of tree species composition and structural diversity in European beech stands enriched with coniferous trees
(2024-09-27)Central European forests are the result of centuries of human activity. Changes in species composition, mainly by introducing conifers to areas outside their native range, mostly Norway spruce (Picea abies [L.] Karst.; ... -
Inter and intra-specific interaction effects on individual tree architecture and stand structure, and consequences for ecosystem functions in mixed forests
(2024-09-27)Central Europe is predicted to experience an increase in temperatures and storm frequency and intensity, which will impact forest ecosystems directly and in interaction. European forests host a large share of Europe’s ... -
Inferring atomic line parameters from solar spectra
(2024-09-19)The proximity of the Earth to the Sun offers a unique opportunity to study different plasma phenomena that occur in its atmosphere, which are unattainable in plasma laboratories. Advances in the instruments used for solar ... -
Higher Currents for the sine-Gordon Model in perturbative Algebraic Quantum Field Theory
(2024-09-19)The main results of this thesis are the establishment of the super-renormalizability by power counting and of the summability of an infinite number of (classically conserved) higher currents for the sine-Gordon model in ... -
Metallaelectro-Catalysis and Aryl Sulfonium Salts in Sustainable C–H Activations and Late-Stage Diversification
(2024-09-17)In the past decades, organic chemistry was dominated by functional group interconversions and cross-coupling chemistry. These techniques allowed the synthesis of a plethora of highly complex molecules and are established ... -
Specification of Multiple Processes in Metacontrast Masking
(2024-09-13)Metacontrast masking has been widely used as a tool to study visual perception, but there is still no comprehensive theory of the phenomenon. There is no lack of theories, but a synthesis of the different approaches seems ... -
High-resolution analysis of regulatory interactions and nano-scale chromatin structures
(2024-09-11)Despite having the same genetic blueprint, the development of a complex, multicellular organism from a single fertilized egg results in a wide variety of hundreds distinct cell types, each uniquely contributing to the ... -
Soil food webs change with land use: basal resources, functional diversity and trophic niche breadth
(2024-09-06)The diversity and interactions of organisms, along with ecosystem functions and stability, are intricately linked to food webs. Among these, soil food webs have only been investigated relatively recently due to the small ... -
Community dynamics and trophic niches of soil fauna in Central European forests
(2024-09-06)Global change is altering the state of forest ecosystems, threatening their integrity. A number of studies have reported declines in aboveground arthropod diversity over the last decade and indicated management practices ... -
Sensory Attenuation related to Action-effect Prediction and the Sense of Agency
(2024-09-03)Sensory consequences caused by a self-generated action (action-effect) are assumed to lead to less intense perception compared to external stimuli. This reduced perception referred to as sensory attenuation is suggested ... -
Iterative helioseismic holography
(2024-08-28)The understanding of the solar interior, in particular the subsurface solar flows, is im- portant for understanding the solar activity cycle. Traditional local helioseismology does not use all the seismic information ...