TY - GEN A1 - Schickling, Tobias A1 - Gebhard, Florian A1 - Bünemann, Jörg T1 - Antiferromagnetic Order in Multiband Hubbard Models for Iron Pnictides Y1 - 2011 ER - TY - GEN A1 - Schickling, Tobias A1 - Gebhard, Florian A1 - Bünemann, Jörg A1 - Boeri, Lilia A1 - Andersen, Ole Krogh A1 - Weber, Werner T1 - Gutzwiller Theory of Band Magnetism in LaOFeAs T2 - Physical Review Letters Y1 - 2012 SN - 0031-9007 VL - 108 IS - 3 SP - 036406 ER - TY - GEN A1 - Bünemann, Jörg A1 - Gebhard, Florian A1 - Schickling, Tobias A1 - Weber, Werner T1 - Numerical Minimisation of Gutzwiller Energy Functionals T2 - Physica status solidi : B Y1 - 2012 SN - 1521-3951 VL - 249 IS - 6 SP - 1282 EP - 1291 ER - TY - GEN A1 - Bünemann, Jörg A1 - Schickling, Tobias A1 - Gebhard, Florian T1 - Variational study of Fermi-surface deformations in Hubbard models T2 - Europhysics Letters Y1 - 2012 SN - 1286-4854 VL - 98 IS - 2 SP - 27006 ER - TY - GEN A1 - Pielnhofer, Florian A1 - Schöneich, Michael A1 - Lorenz, Tobias A1 - Yan, Wenjie A1 - Nilges, Tom A1 - Weihrich, Richard A1 - Schmidt, Peer T1 - A rational approach to IrPTe – DFT and CalPhaD studies on phase stability, formation and structure of IrPT e T2 - Zeitschrift für anorganische und allgemeine Chemie N2 - Phase formation, stability, crystal and electronic structures of IrPTe are investigated from experiment and quantum chemical calculations. The phase formation is studied from thermodynamic data and CalPhaD modeling. Applying a high-temperature gas-balance a formation pathway for IrPTe is studied from the elements and the binary parent compounds IrTe2 and IrP2. The obtained paracostibite (CoSbS) type structure contains rarely occurring heteroatomic P-Te dumbbells. The stability of IrPTe and the found structure is studied from DFT calculations with respect to the elements, IrTe2 and IrP2, and possible polymorphs. Probable metastable modifications with XY dumbbells (as known for isoelectronic compounds like CoAsS) are obtained from systematic DFT modelling. Phase transitions are predicted form the equation of states (EOS). According to its electronic band structure IrPTe is predicted as small gap (Eg = 0.5 eV) semiconductor. KW - phase stability KW - DFT KW - gas balance KW - thermodynamic modelling KW - structure prediction Y1 - 2015 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201500149/abstract U6 - https://doi.org/10.1002/zaac.201500149 SN - 1521-3749 VL - 641 IS - 6 SP - 1099 EP - 1105 ER - TY - GEN A1 - Krüger, Florian A1 - Gergs, Tobias A1 - Trieschmann, Jan T1 - Machine learning plasma-surface interface for coupling sputtering and gas-phase transport simulations T2 - Plasma Sources Science and Technology Y1 - 2019 U6 - https://doi.org/10.1088/1361-6595/ab0246 SN - 1361-6595 SN - 0963-0252 VL - 28 IS - 3 ER - TY - GEN A1 - Frese, Tobias A1 - Geiger, Ingmar A1 - Dost, Florian T1 - An empirical investigation of determinants of effectual and causal decision logics in online and high-tech start-up firms T2 - Small Business Economics Y1 - 2020 U6 - https://doi.org/10.1007/s11187-019-00147-8 SN - 1573-0913 VL - 54 IS - 3 SP - 641 EP - 664 ER - TY - GEN A1 - Buras, Allan A1 - Hirsch, Florian A1 - Schneider, Anna A1 - Scharnweber, Tobias A1 - Maaten, Ernst van der A1 - Cruz-García, Roberto A1 - Raab, Thomas A1 - Wilmking, Martin T1 - Reduced above-ground growth and wood density but increased wood chemical concentrations of Scots pine on relict charcoal hearths T2 - Science of The Total Environment N2 - Deciphering the drivers of tree growth is a central aim of dendroecology. In this context, soil conditions may play a crucial role, since they determine the availability of water and nutrients for trees. Yet, effects of systematically differing soil conditions on tree growth render a marginally studied topic. In this context, relict charcoal hearths (RCH) – a widespread legacy of anthropogenic charcoal production – render a valuable ‘natural’ experiment to study possible effects of artificially altered soil conditions on tree growth. We hypothesize, that the differing physico-chemical properties of RCH result in differing wood properties if compared to trees growing on unmodified soils. To test this hypothesis, we analyzed tree-growth, wood density, and wood elemental concentrations of Scots pine as well as physico-chemical soil properties. We applied a classic control-treatment design to compare RCH with unmodified soils. Our analyses identified significantly lower above-ground wood production but systematically higher wood elemental concentrations in RCH-trees compared to control trees. Since we could not identify treatment-specific growth patterns, we hypothesize the observed lower above-ground productivity of Scots pine to indicate an increased root-shoot ratio to compensate for a potentially lower plant water availability on RCH-sites. The observed higher wood elemental concentrations likely reflect higher soil elemental concentrations of Fe, Ca, K, and Mn in RCH soils. In conclusion, our study highlights diverse effects of RCH on tree growth and wood properties and strengthens the value of dendro-chemistry to use the tree-ring archive as proxy for soil conditions within a dendro-ecological context. Y1 - 2020 U6 - https://doi.org/10.1016/j.scitotenv.2020.137189 SN - 1879-1026 SN - 0048-9697 VL - 717 ER - TY - GEN A1 - Neyret, Margot A1 - Le Provost, Gaëtane A1 - Boesing, Andrea Larissa A1 - Schneider, Florian D. A1 - Baulechner, Dennis A1 - Bergmann, Joana A1 - Vries, Franciska T. de A1 - Fiore-Donno, Anna Maria A1 - Geisen, Stefan A1 - Goldmann, Kezia A1 - Merges, Anna A1 - Saifutdinov, Ruslan A. A1 - Simons, Nadja K. A1 - Tobias, Joseph A. A1 - Zaitsev, Andrey S. A1 - Gossner, Martin M. A1 - Jung, Kirsten A1 - Kandeler, Ellen A1 - Krauss, Jochen A1 - Penone, Caterina A1 - Schloter, Michael A1 - Schulz, Stefanie A1 - Staab, Michael A1 - Wolters, Volkmar A1 - Apostolakis, Antonios A1 - Birkhofer, Klaus A1 - Boch, Steffen A1 - Boeddinghaus, Runa S. A1 - Bolliger, Ralph A1 - Bonkowski, Michael A1 - Buscot, François A1 - Dumack, Kenneth A1 - Fischer, Markus A1 - Gan, Huei Ying A1 - Heinze, Johannes A1 - Hölzel, Norbert A1 - John, Katharina A1 - Klaus, Valentin H. A1 - Kleinebecker, Till A1 - Marhan, Sven A1 - Müller, Jörg A1 - Renner, Swen C. A1 - Rillig, Matthias C. A1 - Schenk, Noëlle V. A1 - Schöning, Ingo A1 - Schrumpf, Marion A1 - Seibold, Sebastian A1 - Socher, Stephanie A. A1 - Solly, Emily F. A1 - Teuscher, Miriam A1 - Kleunen, Mark van A1 - Wubet, Tesfaye A1 - Manning, Peter T1 - A slow-fast trait continuum at the whole community level in relation to land-use intensification T2 - Nature Communications N2 - AbstractOrganismal functional strategies form a continuum from slow- to fast-growing organisms, in response to common drivers such as resource availability and disturbance. However, whether there is synchronisation of these strategies at the entire community level is unclear. Here, we combine trait data for 2800 above- and belowground taxa from 14 trophic guilds spanning a disturbance and resource availability gradient in German grasslands. The results indicate that most guilds consistently respond to these drivers through both direct and trophically mediated effects, resulting in a ‘slow-fast’ axis at the level of the entire community. Using 15 indicators of carbon and nutrient fluxes, biomass production and decomposition, we also show that fast trait communities are associated with faster rates of ecosystem functioning. These findings demonstrate that ‘slow’ and ‘fast’ strategies can be manifested at the level of whole communities, opening new avenues of ecosystem-level functional classification. KW - General Physics and Astronomy KW - General Biochemistry KW - General Chemistry KW - Multidisciplinary KW - Genetics and Molecular Biology Y1 - 2024 U6 - https://doi.org/10.1038/s41467-024-45113-5 SN - 2041-1723 VL - 15 IS - 1 ER - TY - GEN A1 - Florian, Tobias A1 - Schricker, Klaus A1 - Zenz, Constantin A1 - Otto, Andreas A1 - Schmidt, Leander A1 - Diegel, Christian A1 - Friedmann, Hannes A1 - Seibold, Marc A1 - Hellwig, Peter A1 - Fröhlich, Fabian A1 - Nagel, Falk A1 - Kallage, Peter A1 - Buttazzoni, Michele A1 - Rack, Alexander A1 - Requardt, Herwig A1 - Chen, Yunhui A1 - Bergmann, Jean Pierre T1 - Combining in situ synchrotron X-ray imaging and multiphysics simulation to reveal pore formation dynamics in laser welding of copper T2 - International Journal of Machine Tools and Manufacture N2 - Laser beam welding has emerged as a powerful tool for manufacturing copper components in electrical vehicles, electronic devices or energy storage, owing to its rapid processing capabilities. Nonetheless, the material’s high thermal conductivity and low absorption of infrared light can introduce process instabilities, resulting in defects such as pores. This study employs a hybrid approach that combines in situ synchrotron X-ray imaging with compressible multiphysics process simulation to elucidate pore-forming mechanisms during laser beam welding of copper. High-speed synchrotron X-ray imaging with an acquisition rate of 20,000 images/second facilitates the identification of relevant process regimes concerning pore formation during laser beam welding of copper with a wavelength of 1070 nm. Furthermore, in situ observations with high temporal and spatial resolution present a unique database for extensive validation of a multi-physics process simulation based on welding processes using different concentric intensity distributions. These validated simulation results enable thorough comprehension of process-related pore formation based on the interaction between keyhole, melt pool and resulting flow field. The findings show that pore formation is driven by four different mechanisms: bulging, spiking, upwelling waves at the keyhole rear wall and melt pool ejections. The synergy of high- speed synchrotron X-ray imaging and multi-physics modeling provides a fundamental understanding of the chronological sequence of events leading to process-related pore formation during laser beam welding of copper. KW - In situ high-speed synchrotron X-ray imaging KW - Multi-physics simulation KW - Laser beam welding KW - Copper KW - Pore formation KW - Concentric intensity distributions Y1 - 2025 U6 - https://doi.org/10.1016/j.ijmachtools.2024.104224 SN - 0890-6955 VL - 204 SP - 1 EP - 22 PB - Elsevier BV ER - TY - GEN A1 - Huber, Christoph A1 - Dreber, Anna A1 - Huber, Jürgen A1 - Johannesson, Magnus A1 - Kirchler, Michael A1 - Weitzel, Utz A1 - Abellán, Miguel A1 - Adayeva, Xeniya A1 - Ay, Fehime Ceren A1 - Barron, Kai A1 - Berry, Zachariah A1 - Bönte, Werner A1 - Brütt, Katharina A1 - Bulutay, Muhammed A1 - Campos-Mercade, Pol A1 - Cardella, Eric A1 - Claassen, Maria Almudena A1 - Cornelissen, Gert A1 - Dawson, Ian G. J. A1 - Delnoij, Joyce A1 - Demiral, Elif E. A1 - Dimant, Eugen A1 - Doerflinger, Johannes Theodor A1 - Dold, Malte A1 - Emery, Cécile A1 - Fiala, Lenka A1 - Fiedler, Susann A1 - Freddi, Eleonora A1 - Fries, Tilman A1 - Gasiorowska, Agata A1 - Glogowsky, Ulrich A1 - Gorny, Paul Matthias A1 - Gretton, Jeremy David A1 - Grohmann, Antonia A1 - Hafenbrädl, Sebastian A1 - Handgraaf, Michel A1 - Hanoch, Yaniv A1 - Hart, Einav A1 - Hennig, Max A1 - Hudja, Stanton A1 - Hütter, Mandy A1 - Hyndman, Kyle A1 - Ioannidis, Konstantinos A1 - Isler, Ozan A1 - Jeworrek, Sabrina A1 - Jolles, Daniel A1 - Juanchich, Marie A1 - Raghabendra, Pratap K.C. A1 - Khadjavi, Menusch A1 - Kugler, Tamar A1 - Li, Shuwen A1 - Lucas, Brian A1 - Mak, Vincent A1 - Mechtel, Mario A1 - Merkle, Christoph A1 - Meyers, Ethan Andrew A1 - Mollerstrom, Johanna A1 - Nesterov, Alexander A1 - Neyse, Levent A1 - Nieken, Petra A1 - Nussberger, Anne-Marie A1 - Palumbo, Helena A1 - Peters, Kim A1 - Pirrone, Angelo A1 - Qin, Xiangdong A1 - Rahal, Rima Maria A1 - Rau, Holger A1 - Rincke, Johannes A1 - Ronzani, Piero A1 - Roth, Yefim A1 - Saral, Ali Seyhun A1 - Schmitz, Jan A1 - Schneider, Florian A1 - Schram, Arthur A1 - Schudy, Simeon A1 - Schweitzer, Maurice E. A1 - Schwieren, Christiane A1 - Scopelliti, Irene A1 - Sirota, Miroslav A1 - Sonnemans, Joep A1 - Soraperra, Ivan A1 - Spantig, Lisa A1 - Steimanis, Ivo A1 - Steinmetz, Janina A1 - Suetens, Sigrid A1 - Theodoropoulou, Andriana A1 - Urbig, Diemo A1 - Vorlaufer, Tobias A1 - Waibel, Joschka A1 - Woods, Daniel A1 - Yakobi, Ofir A1 - Yilmaz, Onurcan A1 - Zaleskiewicz, Tomasz A1 - Zeisberger, Stefan A1 - Holzmeister, Felix T1 - Competition and moral behavior: A meta-analysis of forty-five crowd-sourced experimental designs T2 - Proceedings of the National Academy of Sciences N2 - Does competition affect moral behavior? This fundamental question has been debated among leading scholars for centuries, and more recently, it has been tested in experimental studies yielding a body of rather inconclusive empirical evidence. A potential source of ambivalent empirical results on the same hypothesis is design heterogeneity—variation in true effect sizes across various reasonable experimental research protocols. To provide further evidence on whether competition affects moral behavior and to examine whether the generalizability of a single experimental study is jeopardized by design heterogeneity, we invited independent research teams to contribute experimental designs to a crowd-sourced project. In a large-scale online data collection, 18,123 experimental participants were randomly allocated to 45 randomly selected experimental designs out of 95 submitted designs. We find a small adverse effect of competition on moral behavior in a meta-analysis of the pooled data. The crowd-sourced design of our study allows for a clean identification and estimation of the variation in effect sizes above and beyond what could be expected due to sampling variance. We find substantial design heterogeneity—estimated to be about 1.6 times as large as the average standard error of effect size estimates of the 45 research designs—indicating that the informativeness and generalizability of results based on a single experimental design are limited. Drawing strong conclusions about the underlying hypotheses in the presence of substantive design heterogeneity requires moving toward much larger data collections on various experimental designs testing the same hypothesis. Y1 - 2023 U6 - https://doi.org/10.1073/pnas.2215572120 SN - 0027-8424 SN - 1091-6490 VL - 120 IS - 23 ER - TY - GEN A1 - Grießhammer, Stefan G. A1 - Malessa, Anke A1 - Lu, Hui A1 - Yip, Julia A1 - Leuschner, Julie A1 - Christgau, Florian A1 - Albrecht, Nils C. A1 - Oesten, Marie A1 - Tran, Thanh Truc A1 - Richer, Robert A1 - Heckel, Maria A1 - Eskofier, Bjoern M. A1 - Koelpin, Alexander A1 - Steigleder, Tobias A1 - Ostgathe, Christoph T1 - Contactless radar-based heart rate estimation in palliative care : a feasibility study and possible use in symptom management T2 - BMC palliative care N2 - Background Heart rate (HR) monitoring is a medical standard to provide information about a patient’s health status. In palliative care, relationship and social engagement are crucial therapeutic concepts. For fear of disrupting communication, social contact, and care, continuous HR monitoring is underutilised despite its potential to inform on symptom burden and therapeutic effects. This study investigates radar-based HR monitoring as an innovative and burden-free approach for palliative care patients, compares its accuracy with conventional ECG methods, and shows potential for therapeutic guidance. Methods A single-centre, comparative clinical trial was conducted with palliative care patients at the ward of the Department of Palliative Medicine of the University Hospital of Erlangen. The HR measurements obtained with radar were compared with Holter ECG (study arm I, overnight) and Task Force ® Monitor (TFM)-based ECG validation recordings (study arm II, one hour). In addition, long-term radar measurements without validation were analysed in comparison with clinical health records (study arm III). Results Both validation methods showed correlation by scatter plot, modified Bland-Altman plot, and equivalence testing. N  = 34 patients participated in study arm I. HR of 4,079 five-minute intervals was analysed. Radar measurements and ECG showed high agreement: difference of HRs was within 5 bpm in 3780 of 4079 (92.67%) and within ±13.4 bpm ( 1.96 times the SD of the mean) in 3979 (97.55%) intervals, respectively. In study arm II, n  = 19 patients participated. 57,048 heart beats were analysed. The HR difference was within 5 bpm for 53,583 out of 57,048 beats (93.93%) and within 8.2 bpm ( ± 1.96 times the SD of the mean) in 55,439 beats (97.18%), respectively. Arm III showed HR changes extracted from radar data in correlation with symptoms and treatment. Conclusion Radar-based HR monitoring shows a high agreement in comparison with ECG-based HR monitoring and thus offers an option for continuous and above all burden-free HR assessment, with the potential for use in symptom management in palliative care, among others. Further research and technological advancements are still necessary to fully realize this innovative approach in enhancing palliative care practices. KW - Palliative Care KW - Symptom management KW - Radar technology KW - Vital signs KW - Machine learning KW - Artificial intelligence Y1 - 2024 U6 - https://doi.org/10.1186/s12904-024-01592-3 SN - 1472-684X VL - 23 IS - 1 SP - 1 EP - 14 PB - BioMed Central CY - London ER - TY - GEN A1 - Patchett, Aurora A1 - Rütting, Louise A1 - Rütting, Tobias A1 - Bodé, Samuel A1 - Hallin, Sara A1 - Juhanson, Jaanis A1 - Stange, C. Florian A1 - Björkman, Mats P. A1 - Boeckx, Pascal A1 - Rosqvist, Gunhild A1 - Björk, Robert G. T1 - The role of mycorrhizal type and plant dominance in regulating nitrogen cycling in Oroarctic soils T2 - Biogeosciences N2 - Mycorrhizal fungi enhance plant access to nitrogen (N) in nutrient-poor environments like the Arctic tundra by depolymerizing N-rich organic compounds into forms available to plants and microbes. As climate change reshapes plant communities and mycorrhizal associations, shifting dominance from herbaceous species to shrubs, changes in mycorrhizal type and plant species dominance may differentially stimulate N cycling. Both dominant and rare species, along with mycorrhizal associations, contribute to ecosystem processes and stability, though the specific roles of these components in N cycling and overall ecosystem functioning remain uncertain. We investigated how mycorrhizal associations and plant diversity affect gross N mineralization and nitrification rates in an Oroarctic ecosystem. Four years after a plant removal treatment, we measured these rates using in situ 15N labelling and quantified a selection of nitrification genes. Treatment plots included (1) unmanipulated (Control); or the removal of: (2) ectomycorrhizal (EcM) and ericoid mycorrhizal (ErM) plants, letting arbuscular mycorrhizal (AM) and non-mycorrhizal (NM) plants dominate (AM/NM); (3) AM and NM plants, letting EcM and ErM plants dominate (EcM/ErM); (4) low-abundance species, leaving the most abundant species (Dominant); and (5) high-abundance species, leaving only the low-abundance species (Rare). Gross N mineralization rates were 73 % and 78 % higher in EcM/ErM and Dominant, respectively, compared to Control, while AM/NM and Rare showed more moderate increases of 30 % and 46 %. Gross nitrification was also highest in EcM/ErM, with a 26 % increase over Control. Gene abundances did not mirror nitrification patterns. Archaeal ammonia oxidizers (AOA), Nitrospira-type nitrite oxidizers (NIS), and comammox clade A (ComaA) were consistently more abundant than bacterial ammonia oxidizers (AOB), Nitrobacter-type nitrite oxidizers (NIB), and comammox clade B (ComaB), suggesting a stable site-level nitrifier community. Dominant had the lowest gene copy numbers overall, except for AOB, which was highest. In addition, AOA gene abundance was significantly lower in Dominant compared to Control, with a marginal reduction observed for NIS. Our findings highlight the key role of EcM/ErM fungi in accelerating N cycling in Oroarctic soils, challenging traditional assumptions that N transformation rates are slow in EcM/ErM dominated ecosystems. These insights underscore the need to consider mycorrhizal associations and plant community composition when predicting tundra ecosystem responses to environmental change. Y1 - 2025 U6 - https://doi.org/10.5194/bg-22-6841-2025 SN - 1726-4189 VL - 22 IS - 22 SP - 6841 EP - 6860 PB - Copernicus GmbH CY - Göttingen ER - TY - GEN A1 - Steinmetzer, Tobias A1 - Wieczorek, Florian A1 - Naake, Anselm A1 - Wolf, Peter A1 - Braun, Alexander A1 - Michel, Sven T1 - Smart e-textile singlet prototype and concept : multi sensor sensing for geriatric monitoring T2 - Bioengineering N2 - This paper explores the development of a Smart e-Textile Singlet designed to enhance geriatric care through continuous monitoring of vital health parameters. The proposed garment integrates various sensors to measure core body temperature, blood oxygen saturation, respiration rate, blood pressure, pulse, electrocardiogram (ECG), activity level, and risk of falls. Leveraging advanced technologies such as inertial measurement unit (IMU) sensors, thermoelectric materials, and piezoelectric fibers, the e-textile ensures both functionality and sustainability. Additionally, artificial intelligence algorithms are employed to provide near-real-time feedback and early warnings, significantly improving health management for elderly individuals. This innovative approach not only promotes autonomy and well-being among the elderly but also alleviates the workload of healthcare providers. The Smart e-Textile Singlet represents a multi-sensor solution by offering a holistic monitoring system. KW - Singlet KW - Smart e-Textile KW - Wearable KW - IMU sensors KW - ECG KW - Blood pressure KW - Breathing Y1 - 2025 U6 - https://doi.org/10.3390/bioengineering12111275 SN - 2306-5354 VL - 12 IS - 11 SP - 1 EP - 15 PB - MDPI CY - Basel ER -