--- OA_place: publisher _id: '83' abstract: - lang: eng text: "A proof system is a protocol between a prover and a verifier over a common input in which an honest prover convinces the verifier of the validity of true statements. Motivated by the success of decentralized cryptocurrencies, exemplified by Bitcoin, the focus of this thesis will be on proof systems which found applications in some sustainable alternatives to Bitcoin, such as the Spacemint and Chia cryptocurrencies. In particular, we focus on proofs of space and proofs of sequential work.\r\nProofs of space (PoSpace) were suggested as more ecological, economical, and egalitarian alternative to the energy-wasteful proof-of-work mining of Bitcoin. However, the state-of-the-art constructions of PoSpace are based on sophisticated graph pebbling lower bounds, and are therefore complex. Moreover, when these PoSpace are used in cryptocurrencies like Spacemint, miners can only start mining after ensuring that a commitment to their space is already added in a special transaction to the blockchain. Proofs of sequential work (PoSW) are proof systems in which a prover, upon receiving a statement x and a time parameter T, computes a proof which convinces the verifier that T time units had passed since x was received. Whereas Spacemint assumes synchrony to retain some interesting Bitcoin dynamics, Chia requires PoSW with unique proofs, i.e., PoSW in which it is hard to come up with more than one accepting proof for any true statement. In this thesis we construct simple and practically-efficient PoSpace and PoSW. When using our PoSpace in cryptocurrencies, miners can start mining on the fly, like in Bitcoin, and unlike current constructions of PoSW, which either achieve efficient verification of sequential work, or faster-than-recomputing verification of correctness of proofs, but not both at the same time, ours achieve the best of these two worlds." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Hamza M full_name: Abusalah, Hamza M id: 40297222-F248-11E8-B48F-1D18A9856A87 last_name: Abusalah citation: ama: Abusalah HM. Proof systems for sustainable decentralized cryptocurrencies. 2018. doi:10.15479/AT:ISTA:TH_1046 apa: Abusalah, H. M. (2018). Proof systems for sustainable decentralized cryptocurrencies. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:TH_1046 chicago: Abusalah, Hamza M. “Proof Systems for Sustainable Decentralized Cryptocurrencies.” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:TH_1046. ieee: H. M. Abusalah, “Proof systems for sustainable decentralized cryptocurrencies,” Institute of Science and Technology Austria, 2018. ista: Abusalah HM. 2018. Proof systems for sustainable decentralized cryptocurrencies. Institute of Science and Technology Austria. mla: Abusalah, Hamza M. Proof Systems for Sustainable Decentralized Cryptocurrencies. Institute of Science and Technology Austria, 2018, doi:10.15479/AT:ISTA:TH_1046. short: H.M. Abusalah, Proof Systems for Sustainable Decentralized Cryptocurrencies, Institute of Science and Technology Austria, 2018. corr_author: '1' date_created: 2018-12-11T11:44:32Z date_published: 2018-09-05T00:00:00Z date_updated: 2026-07-29T13:38:08Z day: '05' ddc: - '004' degree_awarded: PhD department: - _id: KrPi - _id: GradSch doi: 10.15479/AT:ISTA:TH_1046 doi_confirm: '1' ec_funded: 1 file: - access_level: open_access checksum: c4b5f7d111755d1396787f41886fc674 content_type: application/pdf creator: dernst date_created: 2019-04-09T06:43:41Z date_updated: 2020-07-14T12:48:11Z file_id: '6245' file_name: 2018_Thesis_Abusalah.pdf file_size: 876241 relation: main_file - access_level: closed checksum: 0f382ac56b471c48fd907d63eb87dafe content_type: application/x-gzip creator: dernst date_created: 2019-04-09T06:43:41Z date_updated: 2020-07-14T12:48:11Z file_id: '6246' file_name: 2018_Thesis_Abusalah_source.tar.gz file_size: 2029190 relation: source_file file_date_updated: 2020-07-14T12:48:11Z fulldoi: https://doi.org/10.15479/AT:ISTA:TH_1046 has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '59' project: - _id: 258C570E-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '259668' name: Provable Security for Physical Cryptography - _id: 258AA5B2-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '682815' name: Teaching Old Crypto New Tricks publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria publist_id: '7971' pubrep_id: '1046' related_material: record: - id: '559' relation: part_of_dissertation status: public - id: '1236' relation: part_of_dissertation status: public - id: '1235' relation: part_of_dissertation status: public - id: '1229' relation: part_of_dissertation status: public status: public supervisor: - first_name: Krzysztof Z full_name: Pietrzak, Krzysztof Z id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87 last_name: Pietrzak orcid: 0000-0002-9139-1654 title: Proof systems for sustainable decentralized cryptocurrencies type: dissertation user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2018' ... --- _id: '1012' abstract: - lang: eng text: We prove a new central limit theorem (CLT) for the difference of linear eigenvalue statistics of a Wigner random matrix H and its minor H and find that the fluctuation is much smaller than the fluctuations of the individual linear statistics, as a consequence of the strong correlation between the eigenvalues of H and H. In particular, our theorem identifies the fluctuation of Kerov's rectangular Young diagrams, defined by the interlacing eigenvalues ofH and H, around their asymptotic shape, the Vershik'Kerov'Logan'Shepp curve. Young diagrams equipped with the Plancherel measure follow the same limiting shape. For this, algebraically motivated, ensemble a CLT has been obtained in Ivanov and Olshanski [20] which is structurally similar to our result but the variance is different, indicating that the analogy between the two models has its limitations. Moreover, our theorem shows that Borodin's result [7] on the convergence of the spectral distribution of Wigner matrices to a Gaussian free field also holds in derivative sense. article_processing_charge: No arxiv: 1 author: - first_name: László full_name: Erdös, László id: 4DBD5372-F248-11E8-B48F-1D18A9856A87 last_name: Erdös orcid: 0000-0001-5366-9603 - first_name: Dominik J full_name: Schröder, Dominik J id: 408ED176-F248-11E8-B48F-1D18A9856A87 last_name: Schröder orcid: 0000-0002-2904-1856 citation: ama: Erdös L, Schröder DJ. Fluctuations of rectangular young diagrams of interlacing wigner eigenvalues. International Mathematics Research Notices. 2018;2018(10):3255-3298. doi:10.1093/imrn/rnw330 apa: Erdös, L., & Schröder, D. J. (2018). Fluctuations of rectangular young diagrams of interlacing wigner eigenvalues. International Mathematics Research Notices. Oxford University Press. https://doi.org/10.1093/imrn/rnw330 chicago: Erdös, László, and Dominik J Schröder. “Fluctuations of Rectangular Young Diagrams of Interlacing Wigner Eigenvalues.” International Mathematics Research Notices. Oxford University Press, 2018. https://doi.org/10.1093/imrn/rnw330. ieee: L. Erdös and D. J. Schröder, “Fluctuations of rectangular young diagrams of interlacing wigner eigenvalues,” International Mathematics Research Notices, vol. 2018, no. 10. Oxford University Press, pp. 3255–3298, 2018. ista: Erdös L, Schröder DJ. 2018. Fluctuations of rectangular young diagrams of interlacing wigner eigenvalues. International Mathematics Research Notices. 2018(10), 3255–3298. mla: Erdös, László, and Dominik J. Schröder. “Fluctuations of Rectangular Young Diagrams of Interlacing Wigner Eigenvalues.” International Mathematics Research Notices, vol. 2018, no. 10, Oxford University Press, 2018, pp. 3255–98, doi:10.1093/imrn/rnw330. short: L. Erdös, D.J. Schröder, International Mathematics Research Notices 2018 (2018) 3255–3298. date_created: 2018-12-11T11:49:41Z date_published: 2018-05-18T00:00:00Z date_updated: 2026-07-29T13:46:19Z day: '18' department: - _id: LaEr doi: 10.1093/imrn/rnw330 ec_funded: 1 external_id: arxiv: - '1608.05163' isi: - '000441668300009' fulldoi: https://doi.org/10.1093/imrn/rnw330 intvolume: ' 2018' isi: 1 issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1608.05163 month: '05' oa: 1 oa_version: Preprint page: 3255-3298 project: - _id: 258DCDE6-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '338804' name: Random matrices, universality and disordered quantum systems publication: International Mathematics Research Notices publication_identifier: issn: - 1073-7928 publication_status: published publisher: Oxford University Press publist_id: '6383' quality_controlled: '1' related_material: record: - id: '6179' relation: dissertation_contains status: public scopus_import: '1' status: public title: Fluctuations of rectangular young diagrams of interlacing wigner eigenvalues type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2018 year: '2018' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '22464' abstract: - lang: eng text: "Field measurements of aboveground net primary productivity (ANPP) in\r\ntemperate grasslands suggest that both positive and negative asymmetric\r\nresponses to changes in precipitation (P) may occur. Under normal range of\r\nprecipitation variability, wet years typically result in ANPP gains being\r\nlarger than ANPP declines in dry years (positive asymmetry), whereas\r\nincreases in ANPP are lower in magnitude in extreme wet years compared to\r\nreductions during extreme drought (negative asymmetry). Whether the current\r\ngeneration of ecosystem models with a coupled carbon–water system in\r\ngrasslands are capable of simulating these asymmetric ANPP responses is an\r\nunresolved question. In this study, we evaluated the simulated responses of\r\ntemperate grassland primary productivity to scenarios of altered\r\nprecipitation with 14 ecosystem models at three sites: Shortgrass\r\nsteppe (SGS), Konza Prairie (KNZ) and Stubai Valley meadow (STU), spanning a\r\nrainfall gradient from dry to moist. We found that (1) the spatial slopes\r\nderived from modeled primary productivity and precipitation across sites were\r\nsteeper than the temporal slopes obtained from inter-annual variations, which\r\nwas consistent with empirical data; (2) the asymmetry of the responses of\r\nmodeled primary productivity under normal inter-annual precipitation\r\nvariability differed among models, and the mean of the model ensemble\r\nsuggested a negative asymmetry across the three sites, which was contrary to\r\nempirical evidence based on filed observations; (3) the mean sensitivity of\r\nmodeled productivity to rainfall suggested greater negative response with\r\nreduced precipitation than positive response to an increased precipitation\r\nunder extreme conditions at the three sites; and (4) gross primary productivity\r\n(GPP), net primary productivity (NPP), aboveground NPP (ANPP) and belowground\r\nNPP (BNPP) all showed concave-down nonlinear responses to altered\r\nprecipitation in all the models, but with different curvatures and mean\r\nvalues. Our results indicated that most models overestimate the negative\r\ndrought effects and/or underestimate the positive effects of increased\r\nprecipitation on primary productivity under normal climate conditions,\r\nhighlighting the need for improving eco-hydrological processes in those\r\nmodels in the future." article_processing_charge: No article_type: original author: - first_name: Donghai full_name: Wu, Donghai last_name: Wu - first_name: Philippe full_name: Ciais, Philippe last_name: Ciais - first_name: Nicolas full_name: Viovy, Nicolas last_name: Viovy - first_name: Alan K. full_name: Knapp, Alan K. last_name: Knapp - first_name: Kevin full_name: Wilcox, Kevin last_name: Wilcox - first_name: Michael full_name: Bahn, Michael last_name: Bahn - first_name: Melinda D. full_name: Smith, Melinda D. last_name: Smith - first_name: Sara full_name: Vicca, Sara last_name: Vicca - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi - first_name: Jakob full_name: Zscheischler, Jakob last_name: Zscheischler - first_name: Yue full_name: He, Yue last_name: He - first_name: Xiangyi full_name: Li, Xiangyi last_name: Li - first_name: Akihiko full_name: Ito, Akihiko last_name: Ito - first_name: Almut full_name: Arneth, Almut last_name: Arneth - first_name: Anna full_name: Harper, Anna last_name: Harper - first_name: Anna full_name: Ukkola, Anna last_name: Ukkola - first_name: Athanasios full_name: Paschalis, Athanasios last_name: Paschalis - first_name: Benjamin full_name: Poulter, Benjamin last_name: Poulter - first_name: Changhui full_name: Peng, Changhui last_name: Peng - first_name: Daniel full_name: Ricciuto, Daniel last_name: Ricciuto - first_name: David full_name: Reinthaler, David last_name: Reinthaler - first_name: Guangsheng full_name: Chen, Guangsheng last_name: Chen - first_name: Hanqin full_name: Tian, Hanqin last_name: Tian - first_name: Hélène full_name: Genet, Hélène last_name: Genet - first_name: Jiafu full_name: Mao, Jiafu last_name: Mao - first_name: Johannes full_name: Ingrisch, Johannes last_name: Ingrisch - first_name: Julia E. S. M. full_name: Nabel, Julia E. S. M. last_name: Nabel - first_name: Julia full_name: Pongratz, Julia last_name: Pongratz - first_name: Lena R. full_name: Boysen, Lena R. last_name: Boysen - first_name: Markus full_name: Kautz, Markus last_name: Kautz - first_name: Michael full_name: Schmitt, Michael last_name: Schmitt - first_name: Patrick full_name: Meir, Patrick last_name: Meir - first_name: Qiuan full_name: Zhu, Qiuan last_name: Zhu - first_name: Roland full_name: Hasibeder, Roland last_name: Hasibeder - first_name: Sebastian full_name: Sippel, Sebastian last_name: Sippel - first_name: Shree R. S. full_name: Dangal, Shree R. S. last_name: Dangal - first_name: Stephen full_name: Sitch, Stephen last_name: Sitch - first_name: Xiaoying full_name: Shi, Xiaoying last_name: Shi - first_name: Yingping full_name: Wang, Yingping last_name: Wang - first_name: Yiqi full_name: Luo, Yiqi last_name: Luo - first_name: Yongwen full_name: Liu, Yongwen last_name: Liu - first_name: Shilong full_name: Piao, Shilong last_name: Piao citation: ama: Wu D, Ciais P, Viovy N, et al. Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites. Biogeosciences. 2018;15(11):3421-3437. doi:10.5194/bg-15-3421-2018 apa: Wu, D., Ciais, P., Viovy, N., Knapp, A. K., Wilcox, K., Bahn, M., … Piao, S. (2018). Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites. Biogeosciences. Copernicus Publications. https://doi.org/10.5194/bg-15-3421-2018 chicago: Wu, Donghai, Philippe Ciais, Nicolas Viovy, Alan K. Knapp, Kevin Wilcox, Michael Bahn, Melinda D. Smith, et al. “Asymmetric Responses of Primary Productivity to Altered Precipitation Simulated by Ecosystem Models across Three Long-Term Grassland Sites.” Biogeosciences. Copernicus Publications, 2018. https://doi.org/10.5194/bg-15-3421-2018. ieee: D. Wu et al., “Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites,” Biogeosciences, vol. 15, no. 11. Copernicus Publications, pp. 3421–3437, 2018. ista: Wu D, Ciais P, Viovy N, Knapp AK, Wilcox K, Bahn M, Smith MD, Vicca S, Fatichi S, Zscheischler J, He Y, Li X, Ito A, Arneth A, Harper A, Ukkola A, Paschalis A, Poulter B, Peng C, Ricciuto D, Reinthaler D, Chen G, Tian H, Genet H, Mao J, Ingrisch J, Nabel JESM, Pongratz J, Boysen LR, Kautz M, Schmitt M, Meir P, Zhu Q, Hasibeder R, Sippel S, Dangal SRS, Sitch S, Shi X, Wang Y, Luo Y, Liu Y, Piao S. 2018. Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites. Biogeosciences. 15(11), 3421–3437. mla: Wu, Donghai, et al. “Asymmetric Responses of Primary Productivity to Altered Precipitation Simulated by Ecosystem Models across Three Long-Term Grassland Sites.” Biogeosciences, vol. 15, no. 11, Copernicus Publications, 2018, pp. 3421–37, doi:10.5194/bg-15-3421-2018. short: D. Wu, P. Ciais, N. Viovy, A.K. Knapp, K. Wilcox, M. Bahn, M.D. Smith, S. Vicca, S. Fatichi, J. Zscheischler, Y. He, X. Li, A. Ito, A. Arneth, A. Harper, A. Ukkola, A. Paschalis, B. Poulter, C. Peng, D. Ricciuto, D. Reinthaler, G. Chen, H. Tian, H. Genet, J. Mao, J. Ingrisch, J.E.S.M. Nabel, J. Pongratz, L.R. Boysen, M. Kautz, M. Schmitt, P. Meir, Q. Zhu, R. Hasibeder, S. Sippel, S.R.S. Dangal, S. Sitch, X. Shi, Y. Wang, Y. Luo, Y. Liu, S. Piao, Biogeosciences 15 (2018) 3421–3437. das_tickbox: '1' date_created: 2026-07-27T12:30:23Z date_published: 2018-06-11T00:00:00Z date_updated: 2026-07-30T06:02:08Z day: '11' ddc: - '550' doi: 10.5194/bg-15-3421-2018 extern: '1' fulldoi: https://doi.org/10.5194/bg-15-3421-2018 has_accepted_license: '1' intvolume: ' 15' issue: '11' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ main_file_link: - open_access: '1' url: https://doi.org/10.5194/bg-15-3421-2018 month: '06' oa: 1 oa_version: Published Version page: 3421-3437 publication: Biogeosciences publication_identifier: eissn: - 1726-4189 issn: - 1726-4170 publication_status: published publisher: Copernicus Publications quality_controlled: '1' scopus_import: '1' status: public title: Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2018' ... --- OA_place: publisher OA_type: free access _id: '22481' abstract: - lang: eng text: Water transit times and flow pathways are crucial elements in characterizing catchment hydrologic response. Understanding their variability in space and time sheds light on the link between discharge formation and water quality at the catchment scale. Here, we introduce a novel modeling framework to explore water transport mechanisms using the Hafren catchment in Wales (UK) as a case study. We show that a fully distributed hydrological model coupled with a transport component for conservative tracers is useful in analyzing how hydrometeorological conditions and spatial heterogeneity may affect water transit times and age distributions in a real catchment. We use the model to track the paths of water parcels that entered the catchment as rainfall over 2 years, labeling each day of rain individually. There is a reasonable agreement between tracer simulations and observations, suggesting that dynamic transit time distributions (TTDs) both forward and backward in time can be approximated using a high spatial and temporal resolution hydrochemical model, without assuming a priori any transit and storage selection functions at the catchment scale. TTDs are quantified for the modeled internal dynamics of the study catchment. TTDs conditional on a given rainfall time are mostly correlated to the season in which the rain event occurs, whereas TTDs conditional on a given exit time are mostly affected by catchment wetness. When TTDs for individual rainfall events are re‐scaled as functions of cumulative discharge, they collapse around a single common distribution, suggesting a potential characteristic catchment function. article_processing_charge: No article_type: original author: - first_name: Federica full_name: Remondi, Federica last_name: Remondi - first_name: James W. full_name: Kirchner, James W. last_name: Kirchner - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi citation: ama: Remondi F, Kirchner JW, Burlando P, Fatichi S. Water flux tracking with a distributed hydrological model to quantify controls on the spatio-temporal variability of transit time distributions. Water Resources Research. 2018;54(4):3081-3099. doi:10.1002/2017wr021689 apa: Remondi, F., Kirchner, J. W., Burlando, P., & Fatichi, S. (2018). Water flux tracking with a distributed hydrological model to quantify controls on the spatio-temporal variability of transit time distributions. Water Resources Research. American Geophysical Union. https://doi.org/10.1002/2017wr021689 chicago: Remondi, Federica, James W. Kirchner, Paolo Burlando, and Simone Fatichi. “Water Flux Tracking with a Distributed Hydrological Model to Quantify Controls on the Spatio-Temporal Variability of Transit Time Distributions.” Water Resources Research. American Geophysical Union, 2018. https://doi.org/10.1002/2017wr021689. ieee: F. Remondi, J. W. Kirchner, P. Burlando, and S. Fatichi, “Water flux tracking with a distributed hydrological model to quantify controls on the spatio-temporal variability of transit time distributions,” Water Resources Research, vol. 54, no. 4. American Geophysical Union, pp. 3081–3099, 2018. ista: Remondi F, Kirchner JW, Burlando P, Fatichi S. 2018. Water flux tracking with a distributed hydrological model to quantify controls on the spatio-temporal variability of transit time distributions. Water Resources Research. 54(4), 3081–3099. mla: Remondi, Federica, et al. “Water Flux Tracking with a Distributed Hydrological Model to Quantify Controls on the Spatio-Temporal Variability of Transit Time Distributions.” Water Resources Research, vol. 54, no. 4, American Geophysical Union, 2018, pp. 3081–99, doi:10.1002/2017wr021689. short: F. Remondi, J.W. Kirchner, P. Burlando, S. Fatichi, Water Resources Research 54 (2018) 3081–3099. das_tickbox: '1' date_created: 2026-07-27T12:30:23Z date_published: 2018-04-01T00:00:00Z date_updated: 2026-07-30T05:57:58Z day: '01' doi: 10.1002/2017wr021689 extern: '1' fulldoi: https://doi.org/10.1002/2017wr021689 intvolume: ' 54' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1002/2017WR021689 month: '04' oa: 1 oa_version: Published Version page: 3081-3099 publication: Water Resources Research publication_identifier: eissn: - 1944-7973 issn: - 0043-1397 publication_status: published publisher: American Geophysical Union quality_controlled: '1' scopus_import: '1' status: public title: Water flux tracking with a distributed hydrological model to quantify controls on the spatio-temporal variability of transit time distributions type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 54 year: '2018' ... --- OA_place: publisher OA_type: free access _id: '22440' abstract: - lang: eng text: Large uncertainties on the sensitivity of Amazon forests to drought exist. Even though water stress should suppress photosynthesis and enhance tree mortality, a green‐up has been often observed during the dry season. This interplay between climatic forcing and forest phenology is poorly understood and inadequately represented in most of existing dynamic global vegetation models calling for an improved description of the Amazon seasonal dynamics. Recent findings on tropical leaf phenology are incorporated in the state‐of‐the‐art eco‐hydrological model Thetys & Chloris. The new model accounts for a mechanistic light‐controlled leaf development, synchronized dry‐season litterfall, and an age‐dependent leaf photosynthetic capacity. Simulation results from 32 sites in the Amazon basin over a 15‐year period successfully mimic the seasonality of gross primary productivity; evapotranspiration (ET); as well as leaf area index, leaf age, and leaf productivity. Representation of tropical leaf phenology reproduces the observed dry‐season greening, reduces simulated gross primary productivity, and does not alter ET, when compared with simulations without phenology. Tolerance to dry periods, with the exception of major drought events, is simulated by the model. Deep roots rather than leaf area index regulation mechanisms control the response to short‐term droughts, but legacy effects can exacerbate multiyear water stress. Our results provide a novel mechanistic approach to model leaf phenology and flux seasonality in the tropics, reconciling the generally observed dry‐season greening, ET seasonality, and decreased carbon uptake during severe droughts. article_processing_charge: No article_type: original author: - first_name: Gabriele full_name: Manoli, Gabriele last_name: Manoli - first_name: Valeriy Y. full_name: Ivanov, Valeriy Y. last_name: Ivanov - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi citation: ama: 'Manoli G, Ivanov VY, Fatichi S. Dry‐season greening and water stress in Amazonia: The role of modeling leaf phenology. Journal of Geophysical Research: Biogeosciences. 2018;123(6):1909-1926. doi:10.1029/2017jg004282' apa: 'Manoli, G., Ivanov, V. Y., & Fatichi, S. (2018). Dry‐season greening and water stress in Amazonia: The role of modeling leaf phenology. Journal of Geophysical Research: Biogeosciences. American Geophysical Union. https://doi.org/10.1029/2017jg004282' chicago: 'Manoli, Gabriele, Valeriy Y. Ivanov, and Simone Fatichi. “Dry‐season Greening and Water Stress in Amazonia: The Role of Modeling Leaf Phenology.” Journal of Geophysical Research: Biogeosciences. American Geophysical Union, 2018. https://doi.org/10.1029/2017jg004282.' ieee: 'G. Manoli, V. Y. Ivanov, and S. Fatichi, “Dry‐season greening and water stress in Amazonia: The role of modeling leaf phenology,” Journal of Geophysical Research: Biogeosciences, vol. 123, no. 6. American Geophysical Union, pp. 1909–1926, 2018.' ista: 'Manoli G, Ivanov VY, Fatichi S. 2018. Dry‐season greening and water stress in Amazonia: The role of modeling leaf phenology. Journal of Geophysical Research: Biogeosciences. 123(6), 1909–1926.' mla: 'Manoli, Gabriele, et al. “Dry‐season Greening and Water Stress in Amazonia: The Role of Modeling Leaf Phenology.” Journal of Geophysical Research: Biogeosciences, vol. 123, no. 6, American Geophysical Union, 2018, pp. 1909–26, doi:10.1029/2017jg004282.' short: 'G. Manoli, V.Y. Ivanov, S. Fatichi, Journal of Geophysical Research: Biogeosciences 123 (2018) 1909–1926.' das_tickbox: '1' date_created: 2026-07-27T12:30:23Z date_published: 2018-06-01T00:00:00Z date_updated: 2026-07-30T06:04:25Z day: '01' doi: 10.1029/2017jg004282 extern: '1' fulldoi: https://doi.org/10.1029/2017jg004282 intvolume: ' 123' issue: '6' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1029/2017JG004282 month: '06' oa: 1 oa_version: Published Version page: 1909-1926 publication: 'Journal of Geophysical Research: Biogeosciences' publication_identifier: eissn: - 2169-8961 issn: - 2169-8953 publication_status: published publisher: American Geophysical Union quality_controlled: '1' scopus_import: '1' status: public title: 'Dry‐season greening and water stress in Amazonia: The role of modeling leaf phenology' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 123 year: '2018' ... --- OA_place: publisher _id: '49' abstract: - lang: eng text: Nowadays, quantum computation is receiving more and more attention as an alternative to the classical way of computing. For realizing a quantum computer, different devices are investigated as potential quantum bits. In this thesis, the focus is on Ge hut wires, which turned out to be promising candidates for implementing hole spin quantum bits. The advantages of Ge as a material system are the low hyperfine interaction for holes and the strong spin orbit coupling, as well as the compatibility with the highly developed CMOS processes in industry. In addition, Ge can also be isotopically purified which is expected to boost the spin coherence times. The strong spin orbit interaction for holes in Ge on the one hand enables the full electrical control of the quantum bit and on the other hand should allow short spin manipulation times. Starting with a bare Si wafer, this work covers the entire process reaching from growth over the fabrication and characterization of hut wire devices up to the demonstration of hole spin resonance. From experiments with single quantum dots, a large g-factor anisotropy between the in-plane and the out-of-plane direction was found. A comparison to a theoretical model unveiled the heavy-hole character of the lowest energy states. The second part of the thesis addresses double quantum dot devices, which were realized by adding two gate electrodes to a hut wire. In such devices, Pauli spin blockade was observed, which can serve as a read-out mechanism for spin quantum bits. Applying oscillating electric fields in spin blockade allowed the demonstration of continuous spin rotations and the extraction of a lower bound for the spin dephasing time. Despite the strong spin orbit coupling in Ge, the obtained value for the dephasing time is comparable to what has been recently reported for holes in Si. All in all, the presented results point out the high potential of Ge hut wires as a platform for long-lived, fast and fully electrically tunable hole spin quantum bits. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Hannes full_name: Watzinger, Hannes id: 35DF8E50-F248-11E8-B48F-1D18A9856A87 last_name: Watzinger citation: ama: Watzinger H. Ge hut wires - from growth to hole spin resonance. 2018. doi:10.15479/AT:ISTA:th_1033 apa: Watzinger, H. (2018). Ge hut wires - from growth to hole spin resonance. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_1033 chicago: Watzinger, Hannes. “Ge Hut Wires - from Growth to Hole Spin Resonance.” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:th_1033. ieee: H. Watzinger, “Ge hut wires - from growth to hole spin resonance,” Institute of Science and Technology Austria, 2018. ista: Watzinger H. 2018. Ge hut wires - from growth to hole spin resonance. Institute of Science and Technology Austria. mla: Watzinger, Hannes. Ge Hut Wires - from Growth to Hole Spin Resonance. Institute of Science and Technology Austria, 2018, doi:10.15479/AT:ISTA:th_1033. short: H. Watzinger, Ge Hut Wires - from Growth to Hole Spin Resonance, Institute of Science and Technology Austria, 2018. corr_author: '1' date_created: 2018-12-11T11:44:21Z date_published: 2018-07-30T00:00:00Z date_updated: 2026-07-31T09:15:25Z day: '30' ddc: - '530' degree_awarded: PhD department: - _id: GeKa - _id: GradSch doi: 10.15479/AT:ISTA:th_1033 doi_confirm: '1' file: - access_level: open_access checksum: b653b5216251f938ddbeafd1de88667c content_type: application/pdf creator: dernst date_created: 2019-04-09T07:13:28Z date_updated: 2020-07-14T12:46:35Z file_id: '6249' file_name: 2018_Thesis_Watzinger.pdf file_size: 85539748 relation: main_file - access_level: closed checksum: 39bcf8de7ac5b1bb516b11ce2f966785 content_type: application/zip creator: dernst date_created: 2019-04-09T07:13:27Z date_updated: 2020-07-14T12:46:35Z file_id: '6250' file_name: 2018_Thesis_Watzinger_source.zip file_size: 21830697 relation: source_file file_date_updated: 2020-07-14T12:46:35Z fulldoi: https://doi.org/10.15479/AT:ISTA:th_1033 has_accepted_license: '1' language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: '77' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria publist_id: '8005' pubrep_id: '1033' status: public supervisor: - first_name: Georgios full_name: Katsaros, Georgios id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros orcid: 0000-0001-8342-202X title: Ge hut wires - from growth to hole spin resonance tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: dissertation user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2018' ... --- _id: '566' abstract: - lang: eng text: "We consider large random matrices X with centered, independent entries which have comparable but not necessarily identical variances. Girko's circular law asserts that the spectrum is supported in a disk and in case of identical variances, the limiting density is uniform. In this special case, the local circular law by Bourgade et. al. [11,12] shows that the empirical density converges even locally on scales slightly above the typical eigenvalue spacing. In the general case, the limiting density is typically inhomogeneous and it is obtained via solving a system of deterministic equations. Our main result is the local inhomogeneous circular law in the bulk spectrum on the optimal scale for a general variance profile of the entries of X. \r\n\r\n" article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Johannes full_name: Alt, Johannes id: 36D3D8B6-F248-11E8-B48F-1D18A9856A87 last_name: Alt - first_name: László full_name: Erdös, László id: 4DBD5372-F248-11E8-B48F-1D18A9856A87 last_name: Erdös orcid: 0000-0001-5366-9603 - first_name: Torben H full_name: Krüger, Torben H id: 3020C786-F248-11E8-B48F-1D18A9856A87 last_name: Krüger orcid: 0000-0002-4821-3297 citation: ama: Alt J, Erdös L, Krüger TH. Local inhomogeneous circular law. Annals of Applied Probability. 2018;28(1):148-203. doi:10.1214/17-AAP1302 apa: Alt, J., Erdös, L., & Krüger, T. H. (2018). Local inhomogeneous circular law. Annals of Applied Probability. Institute of Mathematical Statistics. https://doi.org/10.1214/17-AAP1302 chicago: Alt, Johannes, László Erdös, and Torben H Krüger. “Local Inhomogeneous Circular Law.” Annals of Applied Probability. Institute of Mathematical Statistics, 2018. https://doi.org/10.1214/17-AAP1302. ieee: J. Alt, L. Erdös, and T. H. Krüger, “Local inhomogeneous circular law,” Annals of Applied Probability, vol. 28, no. 1. Institute of Mathematical Statistics, pp. 148–203, 2018. ista: Alt J, Erdös L, Krüger TH. 2018. Local inhomogeneous circular law. Annals of Applied Probability. 28(1), 148–203. mla: Alt, Johannes, et al. “Local Inhomogeneous Circular Law.” Annals of Applied Probability, vol. 28, no. 1, Institute of Mathematical Statistics, 2018, pp. 148–203, doi:10.1214/17-AAP1302. short: J. Alt, L. Erdös, T.H. Krüger, Annals of Applied Probability 28 (2018) 148–203. corr_author: '1' das_tickbox: '1' date_created: 2018-12-11T11:47:13Z date_published: 2018-03-03T00:00:00Z date_updated: 2026-08-05T08:14:17Z day: '03' department: - _id: LaEr doi: 10.1214/17-AAP1302 ec_funded: 1 external_id: arxiv: - '1612.07776 ' isi: - '000431721800005' fulldoi: https://doi.org/10.1214/17-AAP1302 intvolume: ' 28' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: 'https://arxiv.org/abs/1612.07776 ' month: '03' oa: 1 oa_version: Preprint page: 148-203 project: - _id: 258DCDE6-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '338804' name: Random matrices, universality and disordered quantum systems publication: Annals of Applied Probability publication_status: published publisher: Institute of Mathematical Statistics quality_controlled: '1' related_material: record: - id: '149' relation: dissertation_contains status: public scopus_import: '1' status: public title: Local inhomogeneous circular law type: journal_article user_id: 9947682f-b9fa-11ee-9c4a-b3ffaafe6614 volume: 28 year: '2018' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '22504' abstract: - lang: eng text: Given their ability to provide food, raw material and alleviate poverty, oil palm (OP) plantations are driving significant losses of biodiversity-rich tropical forests, fuelling a heated debate on ecosystem degradation and conservation. However, while OP-induced carbon emissions and biodiversity losses have received significant attention, OP water requirements have been marginalized and little is known on the ecohydrological changes (water and surface energy fluxes) occurring from forest clearing to plantation maturity. Numerical simulations supported by field observations from seven sites in Southeast Asia (five OP plantations and two tropical forests) are used here to illustrate the temporal evolution of OP actual evapotranspiration (ET), infiltration/runoff, gross primary productivity (GPP) and surface temperature as well as their changes relative to tropical forests. Model results from large-scale commercial plantations show that young OP plantations decrease ecosystem ET, causing hotter and drier climatic conditions, but mature plantations (age > 8−9 yr) have higher GPP and transpire more water (up to +7.7%) than the forests they have replaced. This is the result of physiological constraints on water use efficiency and the extremely high yield of OP (six to ten times higher than other oil crops). Hence, the land use efficiency of mature OP, i.e. the high productivity per unit of land area, comes at the expense of water consumption in a trade of water for carbon that may jeopardize local water resources. Sequential replanting and herbaceous ground cover can reduce the severity of such ecohydrological changes and support local water/climate regulation. article_number: '064035' article_processing_charge: No article_type: letter_note author: - first_name: Gabriele full_name: Manoli, Gabriele last_name: Manoli - first_name: Ana full_name: Meijide, Ana last_name: Meijide - first_name: Neil full_name: Huth, Neil last_name: Huth - first_name: Alexander full_name: Knohl, Alexander last_name: Knohl - first_name: Yoshiko full_name: Kosugi, Yoshiko last_name: Kosugi - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando - first_name: Jaboury full_name: Ghazoul, Jaboury last_name: Ghazoul - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi citation: ama: Manoli G, Meijide A, Huth N, et al. Ecohydrological changes after tropical forest conversion to oil palm. Environmental Research Letters. 2018;13(6). doi:10.1088/1748-9326/aac54e apa: Manoli, G., Meijide, A., Huth, N., Knohl, A., Kosugi, Y., Burlando, P., … Fatichi, S. (2018). Ecohydrological changes after tropical forest conversion to oil palm. Environmental Research Letters. IOP Publishing. https://doi.org/10.1088/1748-9326/aac54e chicago: Manoli, Gabriele, Ana Meijide, Neil Huth, Alexander Knohl, Yoshiko Kosugi, Paolo Burlando, Jaboury Ghazoul, and Simone Fatichi. “Ecohydrological Changes after Tropical Forest Conversion to Oil Palm.” Environmental Research Letters. IOP Publishing, 2018. https://doi.org/10.1088/1748-9326/aac54e. ieee: G. Manoli et al., “Ecohydrological changes after tropical forest conversion to oil palm,” Environmental Research Letters, vol. 13, no. 6. IOP Publishing, 2018. ista: Manoli G, Meijide A, Huth N, Knohl A, Kosugi Y, Burlando P, Ghazoul J, Fatichi S. 2018. Ecohydrological changes after tropical forest conversion to oil palm. Environmental Research Letters. 13(6), 064035. mla: Manoli, Gabriele, et al. “Ecohydrological Changes after Tropical Forest Conversion to Oil Palm.” Environmental Research Letters, vol. 13, no. 6, 064035, IOP Publishing, 2018, doi:10.1088/1748-9326/aac54e. short: G. Manoli, A. Meijide, N. Huth, A. Knohl, Y. Kosugi, P. Burlando, J. Ghazoul, S. Fatichi, Environmental Research Letters 13 (2018). das_tickbox: '1' date_created: 2026-07-27T12:30:24Z date_published: 2018-06-18T00:00:00Z date_updated: 2026-08-06T07:35:29Z day: '18' ddc: - '550' doi: 10.1088/1748-9326/aac54e extern: '1' fulldoi: https://doi.org/10.1088/1748-9326/aac54e has_accepted_license: '1' intvolume: ' 13' issue: '6' keyword: - Oil palm plantations - Tropical forests - Carbon/water fluxes - Biophysical modeling language: - iso: eng license: https://creativecommons.org/licenses/by/3.0/ main_file_link: - open_access: '1' url: https://doi.org/10.1088/1748-9326/aac54e month: '06' oa: 1 oa_version: Published Version publication: Environmental Research Letters publication_identifier: eissn: - 1748-9326 publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: Ecohydrological changes after tropical forest conversion to oil palm tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode name: Creative Commons Attribution 3.0 Unported (CC BY 3.0) short: CC BY (3.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2018' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '22540' abstract: - lang: eng text: The reliable partitioning of the terrestrial latent heat flux into evaporation (E) and transpiration (T) is important for linking carbon and water cycles and for better understanding ecosystem functioning at local, regional and global scales. Previous research revealed that the transpiration-to-evapotranspiration ratio (T/ET) is well constrained across ecosystems and is nearly independent of vegetation characteristics and climate. Here we investigated the reasons for such a global constancy in present-day T/ET by jointly analysing observations and process-based model simulations. Using this framework, we also quantified how the ratio T/ET could be influenced by changing climate. For present conditions, we found that the various components of land surface evaporation (bare soil evaporation, below canopy soil evaporation, evaporation from interception), and their respective ratios to plant transpiration, depend largely on local climate and equilibrium vegetation properties. The systematic covariation between local vegetation characteristics and climate, resulted in a globally constrained value of T/ET = ∼70 ± 9% for undisturbed ecosystems, nearly independent of specific climate and vegetation attributes. Moreover, changes in precipitation amounts and patterns, increasing air temperatures, atmospheric CO2 concentration, and specific leaf area (the ratio of leaf area per leaf mass) was found to affect T/ET in various manners. However, even extreme changes in the aforementioned factors did not significantly modify T/ET. article_number: '104012' article_processing_charge: No article_type: letter_note author: - first_name: Athanasios full_name: Paschalis, Athanasios last_name: Paschalis - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi - first_name: Christoforos full_name: Pappas, Christoforos last_name: Pappas - first_name: Dani full_name: Or, Dani last_name: Or citation: ama: Paschalis A, Fatichi S, Pappas C, Or D. Covariation of vegetation and climate constrains present and future T/ET variability. Environmental Research Letters. 2018;13(10). doi:10.1088/1748-9326/aae267 apa: Paschalis, A., Fatichi, S., Pappas, C., & Or, D. (2018). Covariation of vegetation and climate constrains present and future T/ET variability. Environmental Research Letters. IOP Publishing . https://doi.org/10.1088/1748-9326/aae267 chicago: Paschalis, Athanasios, Simone Fatichi, Christoforos Pappas, and Dani Or. “Covariation of Vegetation and Climate Constrains Present and Future T/ET Variability.” Environmental Research Letters. IOP Publishing , 2018. https://doi.org/10.1088/1748-9326/aae267. ieee: A. Paschalis, S. Fatichi, C. Pappas, and D. Or, “Covariation of vegetation and climate constrains present and future T/ET variability,” Environmental Research Letters, vol. 13, no. 10. IOP Publishing , 2018. ista: Paschalis A, Fatichi S, Pappas C, Or D. 2018. Covariation of vegetation and climate constrains present and future T/ET variability. Environmental Research Letters. 13(10), 104012. mla: Paschalis, Athanasios, et al. “Covariation of Vegetation and Climate Constrains Present and Future T/ET Variability.” Environmental Research Letters, vol. 13, no. 10, 104012, IOP Publishing , 2018, doi:10.1088/1748-9326/aae267. short: A. Paschalis, S. Fatichi, C. Pappas, D. Or, Environmental Research Letters 13 (2018). das_tickbox: '1' date_created: 2026-07-27T12:30:24Z date_published: 2018-10-05T00:00:00Z date_updated: 2026-08-06T07:46:04Z day: '05' ddc: - '550' doi: 10.1088/1748-9326/aae267 extern: '1' fulldoi: https://doi.org/10.1088/1748-9326/aae267 has_accepted_license: '1' intvolume: ' 13' issue: '10' keyword: - T/ET - Evapotranspiration partitioning - Ecohydrology - Modelling - Climate change language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1088/1748-9326/aae267 month: '10' oa: 1 oa_version: Published Version publication: Environmental Research Letters publication_identifier: eissn: - 1748-9326 publication_status: published publisher: 'IOP Publishing ' quality_controlled: '1' scopus_import: '1' status: public title: Covariation of vegetation and climate constrains present and future T/ET variability tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode name: Creative Commons Attribution 3.0 Unported (CC BY 3.0) short: CC BY (3.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2018' ... --- OA_type: closed access _id: '22550' abstract: - lang: eng text: 'Extreme rainfall is quantified in engineering practice using Intensity–Duration–Frequency curves (IDF) that are traditionally derived from rain-gauges and more recently also from remote sensing instruments, such as weather radars. These instruments measure rainfall at different spatial scales: rain-gauge samples rainfall at the point scale while weather radar averages precipitation on a relatively large area, generally around 1 km2. As such, a radar derived IDF curve is representative of the mean areal rainfall over a given radar pixel and neglects the within-pixel rainfall variability. In this study, we quantify subpixel variability of extreme rainfall by using a novel space–time rainfall generator (STREAP model) that downscales in space the rainfall within a given radar pixel. The study was conducted using a unique radar data record (23 years) and a very dense rain-gauge network in the Eastern Mediterranean area (northern Israel). Radar–IDF curves, together with an ensemble of point-based IDF curves representing the radar subpixel extreme rainfall variability, were developed fitting Generalized Extreme Value (GEV) distributions to annual rainfall maxima. It was found that the mean areal extreme rainfall derived from the radar underestimate most of the extreme values computed for point locations within the radar pixel (on average, ∼70%). The subpixel variability of rainfall extreme was found to increase with longer return periods and shorter durations (e.g. from a maximum variability of 10% for a return period of 2 years and a duration of 4 h to 30% for 50 years return period and 20 min duration). For the longer return periods, a considerable enhancement of extreme rainfall variability was found when stochastic (natural) climate variability was taken into account. Bounding the range of the subpixel extreme rainfall derived from radar–IDF can be of major importance for different applications that require very local estimates of rainfall extremes.' article_processing_charge: No article_type: original author: - first_name: Nadav full_name: Peleg, Nadav last_name: Peleg - first_name: Francesco full_name: Marra, Francesco last_name: Marra - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi - first_name: Athanasios full_name: Paschalis, Athanasios last_name: Paschalis - first_name: Peter full_name: Molnar, Peter last_name: Molnar - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando citation: ama: Peleg N, Marra F, Fatichi S, Paschalis A, Molnar P, Burlando P. Spatial variability of extreme rainfall at radar subpixel scale. Journal of Hydrology. 2018;556:922-933. doi:10.1016/j.jhydrol.2016.05.033 apa: Peleg, N., Marra, F., Fatichi, S., Paschalis, A., Molnar, P., & Burlando, P. (2018). Spatial variability of extreme rainfall at radar subpixel scale. Journal of Hydrology. Elsevier. https://doi.org/10.1016/j.jhydrol.2016.05.033 chicago: Peleg, Nadav, Francesco Marra, Simone Fatichi, Athanasios Paschalis, Peter Molnar, and Paolo Burlando. “Spatial Variability of Extreme Rainfall at Radar Subpixel Scale.” Journal of Hydrology. Elsevier, 2018. https://doi.org/10.1016/j.jhydrol.2016.05.033. ieee: N. Peleg, F. Marra, S. Fatichi, A. Paschalis, P. Molnar, and P. Burlando, “Spatial variability of extreme rainfall at radar subpixel scale,” Journal of Hydrology, vol. 556. Elsevier, pp. 922–933, 2018. ista: Peleg N, Marra F, Fatichi S, Paschalis A, Molnar P, Burlando P. 2018. Spatial variability of extreme rainfall at radar subpixel scale. Journal of Hydrology. 556, 922–933. mla: Peleg, Nadav, et al. “Spatial Variability of Extreme Rainfall at Radar Subpixel Scale.” Journal of Hydrology, vol. 556, Elsevier, 2018, pp. 922–33, doi:10.1016/j.jhydrol.2016.05.033. short: N. Peleg, F. Marra, S. Fatichi, A. Paschalis, P. Molnar, P. Burlando, Journal of Hydrology 556 (2018) 922–933. das_tickbox: '1' date_created: 2026-07-27T12:30:24Z date_published: 2018-01-01T00:00:00Z date_updated: 2026-08-06T08:09:51Z day: '01' doi: 10.1016/j.jhydrol.2016.05.033 extern: '1' fulldoi: https://doi.org/10.1016/j.jhydrol.2016.05.033 intvolume: ' 556' keyword: - Extreme rainfall variability - High resolution rainfall modeling - IDF curves - Precipitation downscaling - Subpixel scale - Weather radar language: - iso: eng month: '01' oa_version: None page: 922-933 publication: Journal of Hydrology publication_identifier: eissn: - 1879-2707 issn: - 0022-1694 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Spatial variability of extreme rainfall at radar subpixel scale type: journal_article user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd volume: 556 year: '2018' ... --- _id: '5858' abstract: - lang: eng text: Spatial patterns are ubiquitous on the subcellular, cellular and tissue level, and can be studied using imaging techniques such as light and fluorescence microscopy. Imaging data provide quantitative information about biological systems; however, mechanisms causing spatial patterning often remain elusive. In recent years, spatio-temporal mathematical modelling has helped to overcome this problem. Yet, outliers and structured noise limit modelling of whole imaging data, and models often consider spatial summary statistics. Here, we introduce an integrated data-driven modelling approach that can cope with measurement artefacts and whole imaging data. Our approach combines mechanistic models of the biological processes with robust statistical models of the measurement process. The parameters of the integrated model are calibrated using a maximum-likelihood approach. We used this integrated modelling approach to study in vivo gradients of the chemokine (C-C motif) ligand 21 (CCL21). CCL21 gradients guide dendritic cells and are important in the adaptive immune response. Using artificial data, we verified that the integrated modelling approach provides reliable parameter estimates in the presence of measurement noise and that bias and variance of these estimates are reduced compared to conventional approaches. The application to experimental data allowed the parametrization and subsequent refinement of the model using additional mechanisms. Among other results, model-based hypothesis testing predicted lymphatic vessel-dependent concentration of heparan sulfate, the binding partner of CCL21. The selected model provided an accurate description of the experimental data and was partially validated using published data. Our findings demonstrate that integrated statistical modelling of whole imaging data is computationally feasible and can provide novel biological insights. article_number: '20180600' article_processing_charge: No author: - first_name: Sabrina full_name: Hross, Sabrina last_name: Hross - first_name: Fabian J. full_name: Theis, Fabian J. last_name: Theis - first_name: Michael K full_name: Sixt, Michael K id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87 last_name: Sixt orcid: 0000-0002-6620-9179 - first_name: Jan full_name: Hasenauer, Jan last_name: Hasenauer citation: ama: Hross S, Theis FJ, Sixt MK, Hasenauer J. Mechanistic description of spatial processes using integrative modelling of noise-corrupted imaging data. Journal of the Royal Society Interface. 2018;15(149). doi:10.1098/rsif.2018.0600 apa: Hross, S., Theis, F. J., Sixt, M. K., & Hasenauer, J. (2018). Mechanistic description of spatial processes using integrative modelling of noise-corrupted imaging data. Journal of the Royal Society Interface. Royal Society. https://doi.org/10.1098/rsif.2018.0600 chicago: Hross, Sabrina, Fabian J. Theis, Michael K Sixt, and Jan Hasenauer. “Mechanistic Description of Spatial Processes Using Integrative Modelling of Noise-Corrupted Imaging Data.” Journal of the Royal Society Interface. Royal Society, 2018. https://doi.org/10.1098/rsif.2018.0600. ieee: S. Hross, F. J. Theis, M. K. Sixt, and J. Hasenauer, “Mechanistic description of spatial processes using integrative modelling of noise-corrupted imaging data,” Journal of the Royal Society Interface, vol. 15, no. 149. Royal Society, 2018. ista: Hross S, Theis FJ, Sixt MK, Hasenauer J. 2018. Mechanistic description of spatial processes using integrative modelling of noise-corrupted imaging data. Journal of the Royal Society Interface. 15(149), 20180600. mla: Hross, Sabrina, et al. “Mechanistic Description of Spatial Processes Using Integrative Modelling of Noise-Corrupted Imaging Data.” Journal of the Royal Society Interface, vol. 15, no. 149, 20180600, Royal Society, 2018, doi:10.1098/rsif.2018.0600. short: S. Hross, F.J. Theis, M.K. Sixt, J. Hasenauer, Journal of the Royal Society Interface 15 (2018). date_created: 2019-01-20T22:59:18Z date_published: 2018-12-05T00:00:00Z date_updated: 2026-08-12T06:28:50Z day: '05' ddc: - '570' department: - _id: MiSi doi: 10.1098/rsif.2018.0600 external_id: isi: - '000456783800011' file: - access_level: open_access checksum: 56eb4308a15b7190bff938fab1f780e8 content_type: application/pdf creator: dernst date_created: 2019-02-05T14:46:44Z date_updated: 2020-07-14T12:47:13Z file_id: '5925' file_name: 2018_Interface_Hross.pdf file_size: 1464288 relation: main_file file_date_updated: 2020-07-14T12:47:13Z fulldoi: https://doi.org/10.1098/rsif.2018.0600 has_accepted_license: '1' intvolume: ' 15' isi: 1 issue: '149' language: - iso: eng month: '12' oa: 1 oa_version: Published Version publication: Journal of the Royal Society Interface publication_identifier: issn: - 1742-5689 publication_status: published publisher: Royal Society quality_controlled: '1' scopus_import: '1' status: public title: Mechanistic description of spatial processes using integrative modelling of noise-corrupted imaging data tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2018' ... --- _id: '5860' abstract: - lang: eng text: 'A major problem for evolutionary theory is understanding the so-called open-ended nature of evolutionary change, from its definition to its origins. Open-ended evolution (OEE) refers to the unbounded increase in complexity that seems to characterize evolution on multiple scales. This property seems to be a characteristic feature of biological and technological evolution and is strongly tied to the generative potential associated with combinatorics, which allows the system to grow and expand their available state spaces. Interestingly, many complex systems presumably displaying OEE, from language to proteins, share a common statistical property: the presence of Zipf''s Law. Given an inventory of basic items (such as words or protein domains) required to build more complex structures (sentences or proteins) Zipf''s Law tells us that most of these elements are rare whereas a few of them are extremely common. Using algorithmic information theory, in this paper we provide a fundamental definition for open-endedness, which can be understood as postulates. Its statistical counterpart, based on standard Shannon information theory, has the structure of a variational problem which is shown to lead to Zipf''s Law as the expected consequence of an evolutionary process displaying OEE. We further explore the problem of information conservation through an OEE process and we conclude that statistical information (standard Shannon information) is not conserved, resulting in the paradoxical situation in which the increase of information content has the effect of erasing itself. We prove that this paradox is solved if we consider non-statistical forms of information. This last result implies that standard information theory may not be a suitable theoretical framework to explore the persistence and increase of the information content in OEE systems.' article_number: '20180395' article_processing_charge: No arxiv: 1 author: - first_name: Bernat full_name: Corominas-Murtra, Bernat id: 43BE2298-F248-11E8-B48F-1D18A9856A87 last_name: Corominas-Murtra orcid: 0000-0001-9806-5643 - first_name: Luís F. full_name: Seoane, Luís F. last_name: Seoane - first_name: Ricard full_name: Solé, Ricard last_name: Solé citation: ama: Corominas-Murtra B, Seoane LF, Solé R. Zipf’s Law, unbounded complexity and open-ended evolution. Journal of the Royal Society Interface. 2018;15(149). doi:10.1098/rsif.2018.0395 apa: Corominas-Murtra, B., Seoane, L. F., & Solé, R. (2018). Zipf’s Law, unbounded complexity and open-ended evolution. Journal of the Royal Society Interface. Royal Society. https://doi.org/10.1098/rsif.2018.0395 chicago: Corominas-Murtra, Bernat, Luís F. Seoane, and Ricard Solé. “Zipf’s Law, Unbounded Complexity and Open-Ended Evolution.” Journal of the Royal Society Interface. Royal Society, 2018. https://doi.org/10.1098/rsif.2018.0395. ieee: B. Corominas-Murtra, L. F. Seoane, and R. Solé, “Zipf’s Law, unbounded complexity and open-ended evolution,” Journal of the Royal Society Interface, vol. 15, no. 149. Royal Society, 2018. ista: Corominas-Murtra B, Seoane LF, Solé R. 2018. Zipf’s Law, unbounded complexity and open-ended evolution. Journal of the Royal Society Interface. 15(149), 20180395. mla: Corominas-Murtra, Bernat, et al. “Zipf’s Law, Unbounded Complexity and Open-Ended Evolution.” Journal of the Royal Society Interface, vol. 15, no. 149, 20180395, Royal Society, 2018, doi:10.1098/rsif.2018.0395. short: B. Corominas-Murtra, L.F. Seoane, R. Solé, Journal of the Royal Society Interface 15 (2018). date_created: 2019-01-20T22:59:19Z date_published: 2018-12-12T00:00:00Z date_updated: 2026-08-12T06:28:34Z day: '12' department: - _id: EdHa doi: 10.1098/rsif.2018.0395 external_id: arxiv: - '1612.01605' isi: - '000456783800002' fulldoi: https://doi.org/10.1098/rsif.2018.0395 intvolume: ' 15' isi: 1 issue: '149' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1612.01605 month: '12' oa: 1 oa_version: Preprint publication: Journal of the Royal Society Interface publication_identifier: issn: - 1742-5689 publication_status: published publisher: Royal Society quality_controlled: '1' scopus_import: '1' status: public title: Zipf's Law, unbounded complexity and open-ended evolution type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2018' ... --- OA_type: closed access _id: '22581' abstract: - lang: eng text: This study contributes to the understanding of the relationship between air temperature and convection by analyzing the characteristics of rainfall at the storm and convective rain cell scales. High spatial–temporal resolution (1 km, 5 min) estimates from a uniquely long weather radar record (24 years) were coupled with near-surface air temperature over Mediterranean and semiarid regions in the eastern Mediterranean. In the examined temperature range (5°–25°C), the peak intensity of individual convective rain cells was found to increase with temperature, but at a lower rate than the 7%°C−1 scaling expected from the Clausius–Clapeyron relation, while the area of the individual convective rain cells slightly decreases or, at most, remains unchanged. At the storm scale, the areal convective rainfall was found to increase with warmer temperatures, whereas the areal nonconvective rainfall and the stormwide area decrease. This suggests an enhanced moisture convergence from the stormwide extent toward the convective rain cells. Results indicate a reduction in the total rainfall amounts and an increased heterogeneity of the spatial structure of the storm rainfall for temperatures increasing up to 25°C. Thermodynamic conditions, analyzed using convective available potential energy, were determined to be similar between Mediterranean and semiarid regions. Limitations in the atmospheric moisture availability when shifting from Mediterranean to semiarid climates were detected and explain the suppression of the intensity of the convective rain cells when moving toward drier regions. The relationships obtained in this study are relevant for nearby regions characterized by Mediterranean and semiarid climates. article_processing_charge: No article_type: original author: - first_name: Nadav full_name: Peleg, Nadav last_name: Peleg - first_name: Francesco full_name: Marra, Francesco last_name: Marra - first_name: Simone full_name: Fatichi, Simone id: cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6 last_name: Fatichi - first_name: Peter full_name: Molnar, Peter last_name: Molnar - first_name: Efrat full_name: Morin, Efrat last_name: Morin - first_name: Ashish full_name: Sharma, Ashish last_name: Sharma - first_name: Paolo full_name: Burlando, Paolo last_name: Burlando citation: ama: Peleg N, Marra F, Fatichi S, et al. Intensification of convective rain cells at warmer temperatures observed from high-resolution weather radar data. Journal of Hydrometeorology. 2018;19(4):715-726. doi:10.1175/jhm-d-17-0158.1 apa: Peleg, N., Marra, F., Fatichi, S., Molnar, P., Morin, E., Sharma, A., & Burlando, P. (2018). Intensification of convective rain cells at warmer temperatures observed from high-resolution weather radar data. Journal of Hydrometeorology. American Meteorological Society. https://doi.org/10.1175/jhm-d-17-0158.1 chicago: Peleg, Nadav, Francesco Marra, Simone Fatichi, Peter Molnar, Efrat Morin, Ashish Sharma, and Paolo Burlando. “Intensification of Convective Rain Cells at Warmer Temperatures Observed from High-Resolution Weather Radar Data.” Journal of Hydrometeorology. American Meteorological Society, 2018. https://doi.org/10.1175/jhm-d-17-0158.1. ieee: N. Peleg et al., “Intensification of convective rain cells at warmer temperatures observed from high-resolution weather radar data,” Journal of Hydrometeorology, vol. 19, no. 4. American Meteorological Society, pp. 715–726, 2018. ista: Peleg N, Marra F, Fatichi S, Molnar P, Morin E, Sharma A, Burlando P. 2018. Intensification of convective rain cells at warmer temperatures observed from high-resolution weather radar data. Journal of Hydrometeorology. 19(4), 715–726. mla: Peleg, Nadav, et al. “Intensification of Convective Rain Cells at Warmer Temperatures Observed from High-Resolution Weather Radar Data.” Journal of Hydrometeorology, vol. 19, no. 4, American Meteorological Society, 2018, pp. 715–26, doi:10.1175/jhm-d-17-0158.1. short: N. Peleg, F. Marra, S. Fatichi, P. Molnar, E. Morin, A. Sharma, P. Burlando, Journal of Hydrometeorology 19 (2018) 715–726. das_tickbox: '1' date_created: 2026-07-27T12:30:25Z date_published: 2018-04-01T00:00:00Z date_updated: 2026-08-12T07:50:18Z day: '01' doi: 10.1175/jhm-d-17-0158.1 extern: '1' fulldoi: https://doi.org/10.1175/jhm-d-17-0158.1 intvolume: ' 19' issue: '4' language: - iso: eng month: '04' oa_version: None page: 715-726 publication: Journal of Hydrometeorology publication_identifier: eissn: - 1525-7541 issn: - 1525-755X publication_status: published publisher: American Meteorological Society quality_controlled: '1' scopus_import: '1' status: public title: Intensification of convective rain cells at warmer temperatures observed from high-resolution weather radar data type: journal_article user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd volume: 19 year: '2018' ... --- _id: '5980' abstract: - lang: eng text: The problem of private set-intersection (PSI) has been traditionally treated as an instance of the more general problem of multi-party computation (MPC). Consequently, in order to argue security, or compose these protocols one has to rely on the general theory that was developed for the purpose of MPC. The pursuit of efficient protocols, however, has resulted in designs that exploit properties pertaining to PSI. In almost all practical applications where a PSI protocol is deployed, it is expected to be executed multiple times, possibly on related inputs. In this work we initiate a dedicated study of PSI in the multi-interaction (MI) setting. In this model a server sets up the common system parameters and executes set-intersection multiple times with potentially different clients. We discuss a few attacks that arise when protocols are naïvely composed in this manner and, accordingly, craft security definitions for the MI setting and study their inter-relation. Finally, we suggest a set of protocols that are MI-secure, at the same time almost as efficient as their parent, stand-alone, protocols. article_processing_charge: No author: - first_name: Sanjit full_name: Chatterjee, Sanjit last_name: Chatterjee - first_name: Chethan full_name: Kamath Hosdurg, Chethan id: 4BD3F30E-F248-11E8-B48F-1D18A9856A87 last_name: Kamath Hosdurg orcid: 0009-0006-6812-7317 - first_name: Vikas full_name: Kumar, Vikas last_name: Kumar citation: ama: Chatterjee S, Kamath Hosdurg C, Kumar V. Private set-intersection with common set-up. Advances in Mathematics of Communications. 2018;12(1):17-47. doi:10.3934/amc.2018002 apa: Chatterjee, S., Kamath Hosdurg, C., & Kumar, V. (2018). Private set-intersection with common set-up. Advances in Mathematics of Communications. AIMS. https://doi.org/10.3934/amc.2018002 chicago: Chatterjee, Sanjit, Chethan Kamath Hosdurg, and Vikas Kumar. “Private Set-Intersection with Common Set-Up.” Advances in Mathematics of Communications. AIMS, 2018. https://doi.org/10.3934/amc.2018002. ieee: S. Chatterjee, C. Kamath Hosdurg, and V. Kumar, “Private set-intersection with common set-up,” Advances in Mathematics of Communications, vol. 12, no. 1. AIMS, pp. 17–47, 2018. ista: Chatterjee S, Kamath Hosdurg C, Kumar V. 2018. Private set-intersection with common set-up. Advances in Mathematics of Communications. 12(1), 17–47. mla: Chatterjee, Sanjit, et al. “Private Set-Intersection with Common Set-Up.” Advances in Mathematics of Communications, vol. 12, no. 1, AIMS, 2018, pp. 17–47, doi:10.3934/amc.2018002. short: S. Chatterjee, C. Kamath Hosdurg, V. Kumar, Advances in Mathematics of Communications 12 (2018) 17–47. date_created: 2019-02-13T13:49:41Z date_published: 2018-02-01T00:00:00Z date_updated: 2026-08-12T09:13:26Z day: '01' department: - _id: KrPi doi: 10.3934/amc.2018002 external_id: isi: - '000430950400002' fulldoi: https://doi.org/10.3934/amc.2018002 intvolume: ' 12' isi: 1 issue: '1' language: - iso: eng month: '02' oa_version: None page: 17-47 publication: Advances in Mathematics of Communications publication_identifier: issn: - 1930-5346 publication_status: published publisher: AIMS quality_controlled: '1' scopus_import: '1' status: public title: Private set-intersection with common set-up type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 12 year: '2018' ... --- OA_place: publisher _id: '418' abstract: - lang: eng text: "The aim of this thesis was the development of new strategies for optical and optogenetic control of proliferative and pro-survival signaling, and characterizing them from the molecular mechanism up to cellular effects. These new light-based methods have unique features, such as red light as an activator, or the avoidance of gene delivery, which enable to overcome current limitations, such as light delivery to target tissues and feasibility as therapeutic approach. A special focus was placed on implementing these new light-based approaches in pancreatic β-cells, as β-cells are the key players in diabetes and especially their loss in number negatively affects disease progression. Currently no treatment options are available to compensate the lack of functional β-cells in diabetic patients.\r\nIn a first approach, red-light-activated growth factor receptors, in particular receptor tyrosine kinases were engineered and characterized. Receptor activation with light allows spatio-temporal control compared to ligand-based activation, and especially red light exhibits deeper tissue penetration than other wavelengths of the visible spectrum. Red-light-activated receptor tyrosine kinases robustly activated major growth factor related signaling pathways with a high temporal resolution. Moreover, the remote activation of the proliferative MAPK/Erk pathway by red-light-activated receptor tyrosine kinases in a pancreatic β-cell line was also achieved, through one centimeter thick mouse tissue. Although red-light-activated receptor tyrosine kinases are particularly attractive for applications in animal models due to the deep tissue penetration of red light, a drawback, especially with regard to translation into humans, is the requirement of gene therapy.\r\nIn a second approach an endogenous light-sensitive mechanism was identified and its potential to promote proliferative and pro-survival signals was explored, towards light-based tissue regeneration without the need for gene transfer. Blue-green light illumination was found to be sufficient for the activation of proliferation and survival promoting signaling pathways in primary pancreatic murine and human islets. Blue-green light also led to an increase in proliferation of primary islet cells, an effect which was shown to be mostly β-cell specific in human islets. Moreover, it was demonstrated that this approach of pancreatic β-cell expansion did not have any negative effect on the β-cell function, in particular on their insulin secretion capacity. In contrast, a trend for enhanced insulin secretion under high glucose conditions after illumination was detected. In order to unravel the detailed characteristics of this endogenous light-sensitive mechanism, the precise light requirements were determined. In addition, the expression of light sensing proteins, OPN3 and rhodopsin, was detected. The observed effects were found to be independent of handling effects such as temperature differences and cytochrome c oxidase dependent ATP increase, but they were found to be enhanced through the knockout of OPN3. The exact mechanism of how islets cells sense light and the identity of the photoreceptor remains unknown.\r\nSummarized two new light-based systems with unique features were established that enable the activation of proliferative and pro-survival signaling pathways. While red-light-activated receptor tyrosine kinases open a new avenue for optogenetics research, by allowing non-invasive control of signaling in vivo, the identified endogenous light-sensitive mechanism has the potential to be the basis of a gene therapy-free therapeutical approach for light-based β-cell expansion." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Eva full_name: Gschaider-Reichhart, Eva id: 3FEE232A-F248-11E8-B48F-1D18A9856A87 last_name: Gschaider-Reichhart orcid: 0000-0002-7218-7738 citation: ama: Gschaider-Reichhart E. Optical and optogenetic control of proliferation and survival . 2018. doi:10.15479/AT:ISTA:th_913 apa: Gschaider-Reichhart, E. (2018). Optical and optogenetic control of proliferation and survival . Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_913 chicago: Gschaider-Reichhart, Eva. “Optical and Optogenetic Control of Proliferation and Survival .” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:th_913. ieee: E. Gschaider-Reichhart, “Optical and optogenetic control of proliferation and survival ,” Institute of Science and Technology Austria, 2018. ista: Gschaider-Reichhart E. 2018. Optical and optogenetic control of proliferation and survival . Institute of Science and Technology Austria. mla: Gschaider-Reichhart, Eva. Optical and Optogenetic Control of Proliferation and Survival . Institute of Science and Technology Austria, 2018, doi:10.15479/AT:ISTA:th_913. short: E. Gschaider-Reichhart, Optical and Optogenetic Control of Proliferation and Survival , Institute of Science and Technology Austria, 2018. corr_author: '1' date_created: 2018-12-11T11:46:22Z date_published: 2018-01-08T00:00:00Z date_updated: 2026-08-12T09:19:21Z day: '08' ddc: - '571' - '570' degree_awarded: PhD department: - _id: HaJa doi: 10.15479/AT:ISTA:th_913 file: - access_level: closed checksum: 697fa72ca36fb1b8ceabc133d58a73e5 content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document creator: dernst date_created: 2019-04-05T09:28:03Z date_updated: 2020-07-14T12:46:24Z file_id: '6222' file_name: 2018_THESIS_Gschaider-Reichhart_source.docx file_size: 7012495 relation: source_file - access_level: open_access checksum: 58d7d1e9e58aeb7f061ab686b1d8a48c content_type: application/pdf creator: dernst date_created: 2019-04-05T09:28:03Z date_updated: 2020-07-14T12:46:24Z file_id: '6223' file_name: 2018_THESIS_Gschaider-Reichhart.pdf file_size: 6355280 relation: main_file file_date_updated: 2020-07-14T12:46:24Z fulldoi: https://doi.org/10.15479/AT:ISTA:th_913 has_accepted_license: '1' language: - iso: eng month: '01' oa: 1 oa_version: Published Version page: '107' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria publist_id: '7405' pubrep_id: '913' related_material: record: - id: '1678' relation: part_of_dissertation status: public - id: '2084' relation: part_of_dissertation status: public - id: '1441' relation: part_of_dissertation status: public - id: '1028' relation: part_of_dissertation status: public status: public supervisor: - first_name: Harald L full_name: Janovjak, Harald L id: 33BA6C30-F248-11E8-B48F-1D18A9856A87 last_name: Janovjak orcid: 0000-0002-8023-9315 title: 'Optical and optogenetic control of proliferation and survival ' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2018' ... --- OA_place: publisher _id: '149' abstract: - lang: eng text: The eigenvalue density of many large random matrices is well approximated by a deterministic measure, the self-consistent density of states. In the present work, we show this behaviour for several classes of random matrices. In fact, we establish that, in each of these classes, the self-consistent density of states approximates the eigenvalue density of the random matrix on all scales slightly above the typical eigenvalue spacing. For large classes of random matrices, the self-consistent density of states exhibits several universal features. We prove that, under suitable assumptions, random Gram matrices and Hermitian random matrices with decaying correlations have a 1/3-Hölder continuous self-consistent density of states ρ on R, which is analytic, where it is positive, and has either a square root edge or a cubic root cusp, where it vanishes. We, thus, extend the validity of the corresponding result for Wigner-type matrices from [4, 5, 7]. We show that ρ is determined as the inverse Stieltjes transform of the normalized trace of the unique solution m(z) to the Dyson equation −m(z) −1 = z − a + S[m(z)] on C N×N with the constraint Im m(z) ≥ 0. Here, z lies in the complex upper half-plane, a is a self-adjoint element of C N×N and S is a positivity-preserving operator on C N×N encoding the first two moments of the random matrix. In order to analyze a possible limit of ρ for N → ∞ and address some applications in free probability theory, we also consider the Dyson equation on infinite dimensional von Neumann algebras. We present two applications to random matrices. We first establish that, under certain assumptions, large random matrices with independent entries have a rotationally symmetric self-consistent density of states which is supported on a centered disk in C. Moreover, it is infinitely often differentiable apart from a jump on the boundary of this disk. Second, we show edge universality at all regular (not necessarily extreme) spectral edges for Hermitian random matrices with decaying correlations. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Johannes full_name: Alt, Johannes id: 36D3D8B6-F248-11E8-B48F-1D18A9856A87 last_name: Alt citation: ama: Alt J. Dyson equation and eigenvalue statistics of random matrices. 2018. doi:10.15479/AT:ISTA:TH_1040 apa: Alt, J. (2018). Dyson equation and eigenvalue statistics of random matrices. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:TH_1040 chicago: Alt, Johannes. “Dyson Equation and Eigenvalue Statistics of Random Matrices.” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:TH_1040. ieee: J. Alt, “Dyson equation and eigenvalue statistics of random matrices,” Institute of Science and Technology Austria, 2018. ista: Alt J. 2018. Dyson equation and eigenvalue statistics of random matrices. Institute of Science and Technology Austria. mla: Alt, Johannes. Dyson Equation and Eigenvalue Statistics of Random Matrices. Institute of Science and Technology Austria, 2018, doi:10.15479/AT:ISTA:TH_1040. short: J. Alt, Dyson Equation and Eigenvalue Statistics of Random Matrices, Institute of Science and Technology Austria, 2018. corr_author: '1' date_created: 2018-12-11T11:44:53Z date_published: 2018-07-12T00:00:00Z date_updated: 2026-08-12T13:58:56Z day: '12' ddc: - '515' - '519' degree_awarded: PhD department: - _id: LaEr doi: 10.15479/AT:ISTA:TH_1040 ec_funded: 1 file: - access_level: open_access checksum: d4dad55a7513f345706aaaba90cb1bb8 content_type: application/pdf creator: dernst date_created: 2019-04-08T13:55:20Z date_updated: 2020-07-14T12:44:57Z file_id: '6241' file_name: 2018_thesis_Alt.pdf file_size: 5801709 relation: main_file - access_level: closed checksum: d73fcf46300dce74c403f2b491148ab4 content_type: application/zip creator: dernst date_created: 2019-04-08T13:55:20Z date_updated: 2020-07-14T12:44:57Z file_id: '6242' file_name: 2018_thesis_Alt_source.zip file_size: 3802059 relation: source_file file_date_updated: 2020-07-14T12:44:57Z fulldoi: https://doi.org/10.15479/AT:ISTA:TH_1040 has_accepted_license: '1' language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: '456' project: - _id: 258DCDE6-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '338804' name: Random matrices, universality and disordered quantum systems publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria publist_id: '7772' pubrep_id: '1040' related_material: record: - id: '6184' relation: part_of_dissertation status: public - id: '6183' relation: part_of_dissertation status: public - id: '1010' relation: part_of_dissertation status: public - id: '550' relation: part_of_dissertation status: public - id: '6240' relation: part_of_dissertation status: public - id: '566' relation: part_of_dissertation status: public - id: '1677' relation: part_of_dissertation status: public status: public supervisor: - first_name: László full_name: Erdös, László id: 4DBD5372-F248-11E8-B48F-1D18A9856A87 last_name: Erdös orcid: 0000-0001-5366-9603 title: Dyson equation and eigenvalue statistics of random matrices tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2018' ... --- _id: '198' abstract: - lang: eng text: We consider a class of students learning a language from a teacher. The situation can be interpreted as a group of child learners receiving input from the linguistic environment. The teacher provides sample sentences. The students try to learn the grammar from the teacher. In addition to just listening to the teacher, the students can also communicate with each other. The students hold hypotheses about the grammar and change them if they receive counter evidence. The process stops when all students have converged to the correct grammar. We study how the time to convergence depends on the structure of the classroom by introducing and evaluating various complexity measures. We find that structured communication between students, although potentially introducing confusion, can greatly reduce some of the complexity measures. Our theory can also be interpreted as applying to the scientific process, where nature is the teacher and the scientists are the students. article_number: '20180073' article_processing_charge: No article_type: original author: - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Ibsen-Jensen R, Tkadlec J, Chatterjee K, Nowak M. Language acquisition with communication between learners. Journal of the Royal Society Interface. 2018;15(140). doi:10.1098/rsif.2018.0073 apa: Ibsen-Jensen, R., Tkadlec, J., Chatterjee, K., & Nowak, M. (2018). Language acquisition with communication between learners. Journal of the Royal Society Interface. Royal Society. https://doi.org/10.1098/rsif.2018.0073 chicago: Ibsen-Jensen, Rasmus, Josef Tkadlec, Krishnendu Chatterjee, and Martin Nowak. “Language Acquisition with Communication between Learners.” Journal of the Royal Society Interface. Royal Society, 2018. https://doi.org/10.1098/rsif.2018.0073. ieee: R. Ibsen-Jensen, J. Tkadlec, K. Chatterjee, and M. Nowak, “Language acquisition with communication between learners,” Journal of the Royal Society Interface, vol. 15, no. 140. Royal Society, 2018. ista: Ibsen-Jensen R, Tkadlec J, Chatterjee K, Nowak M. 2018. Language acquisition with communication between learners. Journal of the Royal Society Interface. 15(140), 20180073. mla: Ibsen-Jensen, Rasmus, et al. “Language Acquisition with Communication between Learners.” Journal of the Royal Society Interface, vol. 15, no. 140, 20180073, Royal Society, 2018, doi:10.1098/rsif.2018.0073. short: R. Ibsen-Jensen, J. Tkadlec, K. Chatterjee, M. Nowak, Journal of the Royal Society Interface 15 (2018). date_created: 2018-12-11T11:45:09Z date_published: 2018-03-01T00:00:00Z date_updated: 2026-08-12T14:08:29Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1098/rsif.2018.0073 ec_funded: 1 external_id: isi: - '000428576200023' pmid: - '29593089' file: - access_level: open_access checksum: 444e1a9d98eb0e780671be82b13025f3 content_type: application/pdf creator: dernst date_created: 2019-02-12T07:54:37Z date_updated: 2020-07-14T12:45:22Z file_id: '5955' file_name: 2018_RS_IbsenJensen.pdf file_size: 219837 relation: main_file file_date_updated: 2020-07-14T12:45:22Z fulldoi: https://doi.org/10.1098/rsif.2018.0073 has_accepted_license: '1' intvolume: ' 15' isi: 1 issue: '140' language: - iso: eng month: '03' oa: 1 oa_version: Submitted Version pmid: 1 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Journal of the Royal Society Interface publication_identifier: eissn: - 1742-5662 publication_status: published publisher: Royal Society publist_id: '7715' quality_controlled: '1' related_material: link: - relation: supplementary_material url: https://dx.doi.org/10.6084/m9.figshare.c.4028971 record: - id: '9814' relation: research_data status: public scopus_import: '1' status: public title: Language acquisition with communication between learners type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2018' ... --- OA_place: publisher _id: '52' abstract: - lang: eng text: In this thesis we will discuss systems of point interacting fermions, their stability and other spectral properties. Whereas for bosons a point interacting system is always unstable this ques- tion is more subtle for a gas of two species of fermions. In particular the answer depends on the mass ratio between these two species. Most of this work will be focused on the N + M model which consists of two species of fermions with N, M particles respectively which interact via point interactions. We will introduce this model using a formal limit and discuss the N + 1 system in more detail. In particular, we will show that for mass ratios above a critical one, which does not depend on the particle number, the N + 1 system is stable. In the context of this model we will prove rigorous versions of Tan relations which relate various quantities of the point-interacting model. By restricting the N + 1 system to a box we define a finite density model with point in- teractions. In the context of this system we will discuss the energy change when introducing a point-interacting impurity into a system of non-interacting fermions. We will see that this change in energy is bounded independently of the particle number and in particular the bound only depends on the density and the scattering length. As another special case of the N + M model we will show stability of the 2 + 2 model for mass ratios in an interval around one. Further we will investigate a different model of point interactions which was discussed before in the literature and which is, contrary to the N + M model, not given by a limiting procedure but is based on a Dirichlet form. We will show that this system behaves trivially in the thermodynamic limit, i.e. the free energy per particle is the same as the one of the non-interacting system. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Thomas full_name: Moser, Thomas id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87 last_name: Moser citation: ama: Moser T. Point interactions in systems of fermions. 2018. doi:10.15479/AT:ISTA:th_1043 apa: Moser, T. (2018). Point interactions in systems of fermions. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_1043 chicago: Moser, Thomas. “Point Interactions in Systems of Fermions.” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:th_1043. ieee: T. Moser, “Point interactions in systems of fermions,” Institute of Science and Technology Austria, 2018. ista: Moser T. 2018. Point interactions in systems of fermions. Institute of Science and Technology Austria. mla: Moser, Thomas. Point Interactions in Systems of Fermions. Institute of Science and Technology Austria, 2018, doi:10.15479/AT:ISTA:th_1043. short: T. Moser, Point Interactions in Systems of Fermions, Institute of Science and Technology Austria, 2018. corr_author: '1' date_created: 2018-12-11T11:44:22Z date_published: 2018-09-04T00:00:00Z date_updated: 2026-08-12T14:12:55Z day: '04' ddc: - '515' - '530' - '519' degree_awarded: PhD department: - _id: RoSe doi: 10.15479/AT:ISTA:th_1043 file: - access_level: open_access checksum: fbd8c747d148b468a21213b7cf175225 content_type: application/pdf creator: dernst date_created: 2019-04-09T07:45:38Z date_updated: 2020-07-14T12:46:37Z file_id: '6256' file_name: 2018_Thesis_Moser.pdf file_size: 851164 relation: main_file - access_level: closed checksum: c28e16ecfc1126d3ce324ec96493c01e content_type: application/zip creator: dernst date_created: 2019-04-09T07:45:38Z date_updated: 2020-07-14T12:46:37Z file_id: '6257' file_name: 2018_Thesis_Moser_Source.zip file_size: 1531516 relation: source_file file_date_updated: 2020-07-14T12:46:37Z fulldoi: https://doi.org/10.15479/AT:ISTA:th_1043 has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '115' project: - _id: 25C878CE-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P27533_N27 name: Structure of the Excitation Spectrum for Many-Body Quantum Systems publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria publist_id: '8002' pubrep_id: '1043' related_material: record: - id: '5856' relation: part_of_dissertation status: public - id: '741' relation: part_of_dissertation status: public - id: '1198' relation: part_of_dissertation status: public - id: '154' relation: part_of_dissertation status: public status: public supervisor: - first_name: Robert full_name: Seiringer, Robert id: 4AFD0470-F248-11E8-B48F-1D18A9856A87 last_name: Seiringer orcid: 0000-0002-6781-0521 title: Point interactions in systems of fermions type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2018' ... --- _id: '154' abstract: - lang: eng text: We give a lower bound on the ground state energy of a system of two fermions of one species interacting with two fermions of another species via point interactions. We show that there is a critical mass ratio m2 ≈ 0.58 such that the system is stable, i.e., the energy is bounded from below, for m∈[m2,m2−1]. So far it was not known whether this 2 + 2 system exhibits a stable region at all or whether the formation of four-body bound states causes an unbounded spectrum for all mass ratios, similar to the Thomas effect. Our result gives further evidence for the stability of the more general N + M system. acknowledgement: Open access funding provided by Austrian Science Fund (FWF). article_number: '19' article_processing_charge: No article_type: original author: - first_name: Thomas full_name: Moser, Thomas id: 2B5FC9A4-F248-11E8-B48F-1D18A9856A87 last_name: Moser - first_name: Robert full_name: Seiringer, Robert id: 4AFD0470-F248-11E8-B48F-1D18A9856A87 last_name: Seiringer orcid: 0000-0002-6781-0521 citation: ama: Moser T, Seiringer R. Stability of the 2+2 fermionic system with point interactions. Mathematical Physics, Analysis and Geometry. 2018;21(3). doi:10.1007/s11040-018-9275-3 apa: Moser, T., & Seiringer, R. (2018). Stability of the 2+2 fermionic system with point interactions. Mathematical Physics, Analysis and Geometry. Springer. https://doi.org/10.1007/s11040-018-9275-3 chicago: Moser, Thomas, and Robert Seiringer. “Stability of the 2+2 Fermionic System with Point Interactions.” Mathematical Physics, Analysis and Geometry. Springer, 2018. https://doi.org/10.1007/s11040-018-9275-3. ieee: T. Moser and R. Seiringer, “Stability of the 2+2 fermionic system with point interactions,” Mathematical Physics, Analysis and Geometry, vol. 21, no. 3. Springer, 2018. ista: Moser T, Seiringer R. 2018. Stability of the 2+2 fermionic system with point interactions. Mathematical Physics, Analysis and Geometry. 21(3), 19. mla: Moser, Thomas, and Robert Seiringer. “Stability of the 2+2 Fermionic System with Point Interactions.” Mathematical Physics, Analysis and Geometry, vol. 21, no. 3, 19, Springer, 2018, doi:10.1007/s11040-018-9275-3. short: T. Moser, R. Seiringer, Mathematical Physics, Analysis and Geometry 21 (2018). date_created: 2018-12-11T11:44:55Z date_published: 2018-09-01T00:00:00Z date_updated: 2026-08-12T14:12:56Z day: '01' ddc: - '530' department: - _id: RoSe doi: 10.1007/s11040-018-9275-3 ec_funded: 1 external_id: isi: - '000439639700001' file: - access_level: open_access checksum: 411c4db5700d7297c9cd8ebc5dd29091 content_type: application/pdf creator: dernst date_created: 2018-12-17T16:49:02Z date_updated: 2020-07-14T12:45:01Z file_id: '5729' file_name: 2018_MathPhysics_Moser.pdf file_size: 496973 relation: main_file file_date_updated: 2020-07-14T12:45:01Z fulldoi: https://doi.org/10.1007/s11040-018-9275-3 has_accepted_license: '1' intvolume: ' 21' isi: 1 issue: '3' language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems - _id: 25C878CE-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P27533_N27 name: Structure of the Excitation Spectrum for Many-Body Quantum Systems - _id: 3AC91DDA-15DF-11EA-824D-93A3E7B544D1 call_identifier: FWF name: FWF Open Access Fund publication: Mathematical Physics, Analysis and Geometry publication_identifier: eissn: - 1572-9656 issn: - 1385-0172 publication_status: published publisher: Springer publist_id: '7767' quality_controlled: '1' related_material: record: - id: '52' relation: dissertation_contains status: public scopus_import: '1' status: public title: Stability of the 2+2 fermionic system with point interactions tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 21 year: '2018' ... --- _id: '6' abstract: - lang: eng text: Lesion and electrode location verification are traditionally done via histological examination of stained brain slices, a time-consuming procedure that requires manual estimation. Here, we describe a simple, straightforward method for quantifying lesions and locating electrodes in the brain that is less laborious and yields more detailed results. Whole brains are stained with osmium tetroxide, embedded in resin, and imaged with a micro-CT scanner. The scans result in 3D digital volumes of the brains with resolutions and virtual section thicknesses dependent on the sample size (12-15 and 5-6 µm per voxel for rat and zebra finch brains, respectively). Surface and deep lesions can be characterized, and single tetrodes, tetrode arrays, electrolytic lesions, and silicon probes can also be localized. Free and proprietary software allows experimenters to examine the sample volume from any plane and segment the volume manually or automatically. Because this method generates whole brain volume, lesions and electrodes can be quantified to a much higher degree than in current methods, which will help standardize comparisons within and across studies. article_processing_charge: No author: - first_name: Javier full_name: Masís, Javier last_name: Masís - first_name: David full_name: Mankus, David last_name: Mankus - first_name: Steffen full_name: Wolff, Steffen last_name: Wolff - first_name: Grigori full_name: Guitchounts, Grigori last_name: Guitchounts - first_name: Maximilian A full_name: Jösch, Maximilian A id: 2BD278E6-F248-11E8-B48F-1D18A9856A87 last_name: Jösch orcid: 0000-0002-3937-1330 - first_name: David full_name: Cox, David last_name: Cox citation: ama: Masís J, Mankus D, Wolff S, Guitchounts G, Jösch MA, Cox D. A micro-CT-based method for characterising lesions and locating electrodes in small animal brains. Journal of Visualized Experiments. 2018;141. doi:10.3791/58585 apa: Masís, J., Mankus, D., Wolff, S., Guitchounts, G., Jösch, M. A., & Cox, D. (2018). A micro-CT-based method for characterising lesions and locating electrodes in small animal brains. Journal of Visualized Experiments. MyJove Corporation. https://doi.org/10.3791/58585 chicago: Masís, Javier, David Mankus, Steffen Wolff, Grigori Guitchounts, Maximilian A Jösch, and David Cox. “A Micro-CT-Based Method for Characterising Lesions and Locating Electrodes in Small Animal Brains.” Journal of Visualized Experiments. MyJove Corporation, 2018. https://doi.org/10.3791/58585. ieee: J. Masís, D. Mankus, S. Wolff, G. Guitchounts, M. A. Jösch, and D. Cox, “A micro-CT-based method for characterising lesions and locating electrodes in small animal brains,” Journal of Visualized Experiments, vol. 141. MyJove Corporation, 2018. ista: Masís J, Mankus D, Wolff S, Guitchounts G, Jösch MA, Cox D. 2018. A micro-CT-based method for characterising lesions and locating electrodes in small animal brains. Journal of Visualized Experiments. 141. mla: Masís, Javier, et al. “A Micro-CT-Based Method for Characterising Lesions and Locating Electrodes in Small Animal Brains.” Journal of Visualized Experiments, vol. 141, MyJove Corporation, 2018, doi:10.3791/58585. short: J. Masís, D. Mankus, S. Wolff, G. Guitchounts, M.A. Jösch, D. Cox, Journal of Visualized Experiments 141 (2018). date_created: 2018-12-11T11:44:07Z date_published: 2018-11-08T00:00:00Z date_updated: 2026-08-12T14:10:17Z day: '08' department: - _id: MaJö doi: 10.3791/58585 external_id: isi: - '000456469400103' fulldoi: https://doi.org/10.3791/58585 intvolume: ' 141' isi: 1 language: - iso: eng month: '11' oa_version: None publication: Journal of Visualized Experiments publication_status: published publisher: MyJove Corporation publist_id: '8050' quality_controlled: '1' scopus_import: '1' status: public title: A micro-CT-based method for characterising lesions and locating electrodes in small animal brains type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 141 year: '2018' ...