OPARA Research Data Repository of Saxon Universities
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Supplementary data for: Weighted Shapley values and allocation of portfolio risk: One approach to solve the low-risk puzzle?
No full textThe data set contains data for the article “Weighted Shapley values and allocation of portfolio risk: One approach to solve the low-risk puzzle?”. This includes a description of the simulation settings, the Excel macros for calculating the results in the case of equal shares and random asset shares, and the 100,000 simulation results for both cases in Excel.
Abstract of the paper: In this article, we extend the application of cooperative game theory to solve the so-called low-risk puzzle. Specifically, we apply concepts that consider asset weights in the allocation of portfolio risk. These weights can take into account various asset characteristics (e.g., image, popularity of an asset, corporate social responsibility, innovative strength) that have not been previously considered in portfolio risk allocation using cooperative game theory. We demonstrate the application through a simulation study. Our results show that considering assets weights could deliver added value when solving the low-risk puzzle
Data Underpinning: Disorder-driven magnetic duality in the spin-½ system ktenasite, Cu₂.₇Zn₂.₃(SO₄)₂(OH)₆·6H₂O
No full textArticle abstract: Disorder in frustrated quantum systems can critically influence their magnetic ground states and drive exotic magnetic behavior. In the S = ½ system ktenasite, Cu₂.₇Zn₂.₃(SO₄)₂(OH)₆·6H₂O, we show that structural disorder drives an unexpected dimensional crossover and stabilizes a rare coexistence of distinct magnetic states. Neutron diffraction reveals significant Cu/Zn mixing at the Cu2 site, which tunes the Cu²⁺ sublattice from a two-dimensional scalene-distorted triangular lattice into a one-dimensional spin-chain network. Magnetic susceptibility, neutron diffraction, ac susceptibility, and specific heat measurements collectively indicate magnetic duality: a coexistence of incommensurate long-range magnetic order below TN = 4 K and a cluster spin-glass state with Tf = 3.28 K at f = 10 Hz. Our findings highlight ktenasite as a rare platform where structural disorder tunes the effective dimensionality and stabilizes coexisting ordered and glassy magnetic phases, offering a unique opportunity to explore the interplay of frustration, disorder, and dimensional crossover in quantum magnets
Supplementary Material to the PhD Thesis "Microscopic investigations of the fiber architecture of the human tympanic membrane"
No full textThe Supplementary Material to the PhD Thesis "Microscopic investigations of the fiber architecture of the human tympanic membrane" contains volumetric raw data and additional videos and images which were created in the course of ex vivo investigations on human tympanic membranes with various optical imaging methods, i.e., polarization-sensitive optical coherence tomography (PS-OCT), second harmonic generation microscopy (SHG) and polarized light microscopy (PLM). Chapter 5 of the dissertation provides a detailed description of the investigations
Raw data from the operational modes demonstration of storage tanks and auxiliary systems for ships burning ammonia as fuel
No full textThis dataset contains raw live monitoring data from the final demonstration of the NH3CRAFT project, during which various operational modes were tested. The focus was on monitoring the transfer of ammonia between tanks and evaluating the performance of associated systems, including flowmeters, valves, pumps, and key tank instrumentation such as temperature, pressure, and filling levels.
The onshore demonstration involved three metallic tanks (MU1, MU2, and MC3) with capacities of 290, 145, and 155 m³, respectively, a containerized metallic tank (MC4, 20 m³), and a container holding eight composite tanks (CC1 to CC8) with a total capacity of 11 m³.
Data were acquired through digital and analog signals from field instruments connected to Programmable Logic Controllers (PLCs), which interfaced with an industrial PC for real-time monitoring.
The dataset demonstrates stable system performance during ammonia transfer operations and serves as a valuable resource for assessing system reliability, safety, and efficiency in ammonia storage applications, supporting the broader objectives of the NH3CRAFT project
A New Risk Assessment Model for Unexploded underwater Military Munitions: Workshop 1 Poll Results
No full textThis file contains workshop poll data from the following doctoral thesis: Frey, Torsten. A New Risk Assessment Model for Unexploded underwater Military Munitions. Dissertation. Leipzig University. Leipzig. 2025. https://doi.org/10.5281/zenodo.14620239. For detailed information, the interested party is referred to Appendices 3 and 4 of the dissertation
Measuring active fluctuations of the cortex in mitosis by embedding an AFM cantilever pyrimidal tip
No full textLiving cells exhibit non-equilibrium dynamics emergent from the intricate interplay between molecular motor activity and its viscoelastic cytoskeletal matrix. The deviation from thermal equilibrium can be quantified through frequency-dependent effective temperature or time-reversal symmetry breaking quantified e.g. through the Kullback-Leibler divergence.
Here, we investigate the fluctuations of an AFM tip embedded within the active cortex of mitotic human cells with and without perturbations that reduce cortex activity through inhibition of material turnover or motor proteins. While inhibition of motor activity significantly reduces both effective temperature and time irreversibility, inhibited material turnover leaves the effective temperature largely unchanged but lowers the time irreversibility and entropy production rate. Our experimental findings in combination with a minimal model highlight that time irreversibility, effective temperature and entropy production rate can follow opposite trends in active living systems, challenging in particular the validity of effective temperature as a proxy for the distance from thermal equilibrium.
Furthermore, we propose that the strength of thermal noise and the occurrence of time-asymmetric deflection spikes in the dynamics of regulated observables are inherently coupled in living systems, revealing a previously unrecognized link between entropy production and time irreversibility
3D-Model Toro Farnese (Plaster Cast Antikenmuseum, Leipzig University)
No full textAssembled digital single models (54) of the cast of the Farnese Bull in the Museum of Antiquities at Leipzig University, including one missing part (marked in red)
Research data for: "Guest Particle Deformation and Powder Flow Behavior in Mechano-Fusion: Linking Microscopic Structure to Macroscopic Performance"
No full textThe research data set comprises the process data of mechano-fusion experiments (machine raw data and experiment meta data) and measurement data of different characterization methods (laser diffraction, BET specific surface area, powder flowability) for the investigated particle samples after mechano-fusion. The data corresponds to the publication "Guest Particle Deformation and Powder Flow Behavior in Mechano-Fusion: Linking Microscopic Structure to Macroscopic Performance" by Seyffer et al. (2025). Further information can be found in the provided Readme file and in the corresponding publication
Correlation Velocimetry inside a model of the human airways
No full textThe dataset corresponds to the publication "Deterministic periodic structures in a model of the human airways" by Kluwe et al. 2025. It contains raw data obtained from an optical setup used for point-wise velocity measurements using Correlation Velocimetry in a model of human airways. The recorded data consists of stereo audio files sampling the photo-electric response of two photodiodes to the passage of tracer particles. The time lag between both signals corresponds to the mean time of flight of ensembles of particles between both detectors. Using the known distance between the detectors (272 micrometers), the mean velocity of the tracer particles can be calculated. This dataset includes the raw data evaluated and discussed in the publication
Statistical Evaluation of Strain Reading Anomalies in Distributed Fiber Optic Strain Sensing Measurements
No full textThree different strain measurements with distributed fibre optic sensors using the ODiSI 6100 in different load conditions have been analyzed regarding the occurence of strain reading anomalis. Therefore, strain reading anomalies have been marked manually.
The load states include a cracked state ( prestressed concrete specimen in 4-point-bending with increasing load), a prestressed state (concrete specimen after prestressing, small cracking) and an unloaded state (prestressed concrete specimen). The used EpsilonSensors (3 mm, ripped) of NerveSensors have been embedded in the concrete specimens. All measurements have been carried out using a gage pitch of 1.3 mm and frequencies between 1 and 6 Hz. The key has been created before concreting of the specimens.
The datasets can be used f.e. for the evaluation of pre-processing algorithms or the creation of benchmark datasets.
The datasets have been choosen due to their bad measurement quality and are no measure for the overall quality of distributed fibre optic strain sensing measurements. The quality issues might be due to dirty connections, scratched connections or sharp strain gradients