--- _id: '12646' abstract: - lang: eng text: Assessment of water resources from remote mountainous catchments plays a crucial role for the development of rural areas in or in the vicinity of mountain ranges. The scarcity of data, however, prevents the application of standard approaches that are based on data-driven models. The Hindu Kush–Karakoram–Himalaya mountain range is a crucial area in terms of water resources, but our understanding of the response of its high-elevation catchments to a changing climate is hindered by lack of hydro-meteorological and cryospheric data. Hydrological modeling is challenging here because internal inconsistencies—such as an underestimation of precipitation input that can be compensated for by an overestimation of meltwater—might be hidden due to the complexity of feedback mechanisms that govern melt and runoff generation in such basins. Data scarcity adds to this difficulty by preventing the application of systematic calibration procedures that would allow identification of the parameter set that could guarantee internal consistency in the simulation of the single hydrological components. In this work, we use simulations from the Hunza River Basin in the Karakoram region obtained with the hydrological model TOPKAPI to quantify the predictive power of discharge and snow-cover data sets, as well as the combination of both. We also show that short-term measurements of meteorological variables such as radiative fluxes, wind speed, relative humidity, and air temperature from glacio-meteorological experiments are crucial for a correct parameterization of surface melt processes. They enable detailed simulations of the energy fluxes governing glacier–atmosphere interaction and the resulting ablation through energy-balance modeling. These simulations are used to derive calibrated parameters for the simplified snow and glacier routines in TOPKAPI. We demonstrate that such parameters are stable in space and time in similar climatic regions, thus reducing the number of parameters requiring calibration. article_processing_charge: No article_type: original author: - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: Cyrill full_name: Buergi, Cyrill last_name: Buergi - first_name: Walter Willem full_name: Immerzeel, Walter Willem last_name: Immerzeel - first_name: Markus full_name: Konz, Markus last_name: Konz - first_name: Arun B. full_name: Shrestha, Arun B. last_name: Shrestha citation: ama: 'Pellicciotti F, Buergi C, Immerzeel WW, Konz M, Shrestha AB. Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies. Mountain Research and Development. 2012;32(1):39-50. doi:10.1659/mrd-journal-d-11-00092.1' apa: 'Pellicciotti, F., Buergi, C., Immerzeel, W. W., Konz, M., & Shrestha, A. B. (2012). Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies. Mountain Research and Development. International Mountain Society. https://doi.org/10.1659/mrd-journal-d-11-00092.1' chicago: 'Pellicciotti, Francesca, Cyrill Buergi, Walter Willem Immerzeel, Markus Konz, and Arun B. Shrestha. “Challenges and Uncertainties in Hydrological Modeling of Remote Hindu Kush–Karakoram–Himalayan (HKH) Basins: Suggestions for Calibration Strategies.” Mountain Research and Development. International Mountain Society, 2012. https://doi.org/10.1659/mrd-journal-d-11-00092.1.' ieee: 'F. Pellicciotti, C. Buergi, W. W. Immerzeel, M. Konz, and A. B. Shrestha, “Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies,” Mountain Research and Development, vol. 32, no. 1. International Mountain Society, pp. 39–50, 2012.' ista: 'Pellicciotti F, Buergi C, Immerzeel WW, Konz M, Shrestha AB. 2012. Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies. Mountain Research and Development. 32(1), 39–50.' mla: 'Pellicciotti, Francesca, et al. “Challenges and Uncertainties in Hydrological Modeling of Remote Hindu Kush–Karakoram–Himalayan (HKH) Basins: Suggestions for Calibration Strategies.” Mountain Research and Development, vol. 32, no. 1, International Mountain Society, 2012, pp. 39–50, doi:10.1659/mrd-journal-d-11-00092.1.' short: F. Pellicciotti, C. Buergi, W.W. Immerzeel, M. Konz, A.B. Shrestha, Mountain Research and Development 32 (2012) 39–50. date_created: 2023-02-20T08:17:47Z date_published: 2012-02-01T00:00:00Z date_updated: 2023-02-21T09:31:54Z day: '01' doi: 10.1659/mrd-journal-d-11-00092.1 extern: '1' intvolume: ' 32' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1659/MRD-JOURNAL-D-11-00092.1 month: '02' oa: 1 oa_version: Published Version page: 39-50 publication: Mountain Research and Development publication_identifier: eissn: - 1994-7151 issn: - 0276-4741 publication_status: published publisher: International Mountain Society quality_controlled: '1' scopus_import: '1' status: public title: 'Challenges and uncertainties in hydrological modeling of remote Hindu Kush–Karakoram–Himalayan (HKH) basins: Suggestions for calibration strategies' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2012' ... --- _id: '12647' abstract: - lang: eng text: Accurate quantification of the spatial distribution of precipitation in mountain regions is crucial for assessments of water resources and for the understanding of high-altitude hydrology, yet it is one of the largest unknowns due to the lack of high-altitude observations. The Hunza basin in Pakistan contains very large glacier systems, which, given the melt, cannot persist unless precipitation (snow input) is much higher than what is observed at the meteorological stations, mostly located in mountain valleys. Several studies, therefore, suggest strong positive vertical precipitation lapse rates; in the present study, we quantify this lapse rate by using glaciers as a proxy. We assume a neutral mass balance for the glaciers for the period from 2001 to 2003, and we inversely model the precipitation lapse by balancing the total accumulation in the catchment area and the ablation over the glacier area for the 50 largest glacier systems in the Hunza basin in the Karakoram. Our results reveal a vertical precipitation lapse rate that equals 0.21 ± 0.12% m−1, with a maximum precipitation at an elevation of 5500 masl. We showed that the total annual basin precipitation (828 mm) is 260% higher than what is estimated based on interpolated observations (319 mm); this has major consequences for hydrological modeling and water resource assessments in general. Our results were validated by using previously published studies on individual glaciers as well as the water balance of the Hunza basin. The approach is more widely applicable in mountain ranges where precipitation measurements at high altitude are lacking. article_processing_charge: No article_type: original author: - first_name: Walter Willem full_name: Immerzeel, Walter Willem last_name: Immerzeel - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: Arun B. full_name: Shrestha, Arun B. last_name: Shrestha citation: ama: Immerzeel WW, Pellicciotti F, Shrestha AB. Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin. Mountain Research and Development. 2012;32(1):30-38. doi:10.1659/mrd-journal-d-11-00097.1 apa: Immerzeel, W. W., Pellicciotti, F., & Shrestha, A. B. (2012). Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin. Mountain Research and Development. International Mountain Society. https://doi.org/10.1659/mrd-journal-d-11-00097.1 chicago: Immerzeel, Walter Willem, Francesca Pellicciotti, and Arun B. Shrestha. “Glaciers as a Proxy to Quantify the Spatial Distribution of Precipitation in the Hunza Basin.” Mountain Research and Development. International Mountain Society, 2012. https://doi.org/10.1659/mrd-journal-d-11-00097.1. ieee: W. W. Immerzeel, F. Pellicciotti, and A. B. Shrestha, “Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin,” Mountain Research and Development, vol. 32, no. 1. International Mountain Society, pp. 30–38, 2012. ista: Immerzeel WW, Pellicciotti F, Shrestha AB. 2012. Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin. Mountain Research and Development. 32(1), 30–38. mla: Immerzeel, Walter Willem, et al. “Glaciers as a Proxy to Quantify the Spatial Distribution of Precipitation in the Hunza Basin.” Mountain Research and Development, vol. 32, no. 1, International Mountain Society, 2012, pp. 30–38, doi:10.1659/mrd-journal-d-11-00097.1. short: W.W. Immerzeel, F. Pellicciotti, A.B. Shrestha, Mountain Research and Development 32 (2012) 30–38. date_created: 2023-02-20T08:17:52Z date_published: 2012-02-01T00:00:00Z date_updated: 2023-02-21T08:56:29Z day: '01' doi: 10.1659/mrd-journal-d-11-00097.1 extern: '1' intvolume: ' 32' issue: '1' keyword: - General Environmental Science - Development - Environmental Chemistry language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1659/MRD-JOURNAL-D-11-00097.1 month: '02' oa: 1 oa_version: Published Version page: 30-38 publication: Mountain Research and Development publication_identifier: eissn: - 1994-7151 issn: - 0276-4741 publication_status: published publisher: International Mountain Society quality_controlled: '1' scopus_import: '1' status: public title: Glaciers as a proxy to quantify the spatial distribution of precipitation in the Hunza basin type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2012' ... --- _id: '12648' abstract: - lang: eng text: Distributed glacier melt models generally assume that the glacier surface consists of bare exposed ice and snow. In reality, many glaciers are wholly or partially covered in layers of debris that tend to suppress ablation rates. In this paper, an existing physically based point model for the ablation of debris-covered ice is incorporated in a distributed melt model and applied to Haut Glacier d'Arolla, Switzerland, which has three large patches of debris cover on its surface. The model is based on a 10 m resolution digital elevation model (DEM) of the area; each glacier pixel in the DEM is defined as either bare or debris-covered ice, and may be covered in snow that must be melted off before ice ablation is assumed to occur. Each debris-covered pixel is assigned a debris thickness value using probability distributions based on over 1000 manual thickness measurements. Locally observed meteorological data are used to run energy balance calculations in every pixel, using an approach suitable for snow, bare ice or debris-covered ice as appropriate. The use of the debris model significantly reduces the total ablation in the debris-covered areas, however the precise reduction is sensitive to the temperature extrapolation used in the model distribution because air near the debris surface tends to be slightly warmer than over bare ice. Overall results suggest that the debris patches, which cover 10% of the glacierized area, reduce total runoff from the glacierized part of the basin by up to 7%. article_number: D18105 article_processing_charge: No article_type: original author: - first_name: T. D. full_name: Reid, T. D. last_name: Reid - first_name: M. full_name: Carenzo, M. last_name: Carenzo - first_name: Francesca full_name: Pellicciotti, Francesca id: b28f055a-81ea-11ed-b70c-a9fe7f7b0e70 last_name: Pellicciotti - first_name: B. W. full_name: Brock, B. W. last_name: Brock citation: ama: 'Reid TD, Carenzo M, Pellicciotti F, Brock BW. Including debris cover effects in a distributed model of glacier ablation. Journal of Geophysical Research: Atmospheres. 2012;117(D18). doi:10.1029/2012jd017795' apa: 'Reid, T. D., Carenzo, M., Pellicciotti, F., & Brock, B. W. (2012). Including debris cover effects in a distributed model of glacier ablation. Journal of Geophysical Research: Atmospheres. American Geophysical Union. https://doi.org/10.1029/2012jd017795' chicago: 'Reid, T. D., M. Carenzo, Francesca Pellicciotti, and B. W. Brock. “Including Debris Cover Effects in a Distributed Model of Glacier Ablation.” Journal of Geophysical Research: Atmospheres. American Geophysical Union, 2012. https://doi.org/10.1029/2012jd017795.' ieee: 'T. D. Reid, M. Carenzo, F. Pellicciotti, and B. W. Brock, “Including debris cover effects in a distributed model of glacier ablation,” Journal of Geophysical Research: Atmospheres, vol. 117, no. D18. American Geophysical Union, 2012.' ista: 'Reid TD, Carenzo M, Pellicciotti F, Brock BW. 2012. Including debris cover effects in a distributed model of glacier ablation. Journal of Geophysical Research: Atmospheres. 117(D18), D18105.' mla: 'Reid, T. D., et al. “Including Debris Cover Effects in a Distributed Model of Glacier Ablation.” Journal of Geophysical Research: Atmospheres, vol. 117, no. D18, D18105, American Geophysical Union, 2012, doi:10.1029/2012jd017795.' short: 'T.D. Reid, M. Carenzo, F. Pellicciotti, B.W. Brock, Journal of Geophysical Research: Atmospheres 117 (2012).' date_created: 2023-02-20T08:17:57Z date_published: 2012-09-27T00:00:00Z date_updated: 2023-02-20T10:57:31Z day: '27' doi: 10.1029/2012jd017795 extern: '1' intvolume: ' 117' issue: D18 keyword: - Paleontology - Space and Planetary Science - Earth and Planetary Sciences (miscellaneous) - Atmospheric Science - Earth-Surface Processes - Geochemistry and Petrology - Soil Science - Water Science and Technology - Ecology - Aquatic Science - Forestry - Oceanography - Geophysics language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1029/2012JD017795 month: '09' oa: 1 oa_version: Published Version publication: 'Journal of Geophysical Research: Atmospheres' publication_identifier: issn: - 0148-0227 publication_status: published publisher: American Geophysical Union quality_controlled: '1' scopus_import: '1' status: public title: Including debris cover effects in a distributed model of glacier ablation type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 117 year: '2012' ... --- _id: '1384' abstract: - lang: eng text: 'Software model checking, as an undecidable problem, has three possible outcomes: (1) the program satisfies the specification, (2) the program does not satisfy the specification, and (3) the model checker fails. The third outcome usually manifests itself in a space-out, time-out, or one component of the verification tool giving up; in all of these failing cases, significant computation is performed by the verification tool before the failure, but no result is reported. We propose to reformulate the model-checking problem as follows, in order to have the verification tool report a summary of the performed work even in case of failure: given a program and a specification, the model checker returns a condition Ψ - usually a state predicate - such that the program satisfies the specification under the condition Ψ - that is, as long as the program does not leave the states in which Ψ is satisfied. In our experiments, we investigated as one major application of conditional model checking the sequential combination of model checkers with information passing. We give the condition that one model checker produces, as input to a second conditional model checker, such that the verification problem for the second is restricted to the part of the state space that is not covered by the condition, i.e., the second model checker works on the problems that the first model checker could not solve. Our experiments demonstrate that repeated application of conditional model checkers, passing information from one model checker to the next, can significantly improve the verification results and performance, i.e., we can now verify programs that we could not verify before.' acknowledgement: This research was supported by the Canadian NSERC grant RGPIN 341819-07, the ERC Advanced Grant QUAREM, and the Austrian Science Fund NFN RiSE. article_number: '57' author: - first_name: Dirk full_name: Beyer, Dirk last_name: Beyer - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Mehmet full_name: Keremoglu, Mehmet last_name: Keremoglu - first_name: Philipp full_name: Wendler, Philipp last_name: Wendler citation: ama: 'Beyer D, Henzinger TA, Keremoglu M, Wendler P. Conditional model checking: A technique to pass information between verifiers. In: Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. ACM; 2012. doi:10.1145/2393596.2393664' apa: 'Beyer, D., Henzinger, T. A., Keremoglu, M., & Wendler, P. (2012). Conditional model checking: A technique to pass information between verifiers. In Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. Cary, NC, USA: ACM. https://doi.org/10.1145/2393596.2393664' chicago: 'Beyer, Dirk, Thomas A Henzinger, Mehmet Keremoglu, and Philipp Wendler. “Conditional Model Checking: A Technique to Pass Information between Verifiers.” In Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. ACM, 2012. https://doi.org/10.1145/2393596.2393664.' ieee: 'D. Beyer, T. A. Henzinger, M. Keremoglu, and P. Wendler, “Conditional model checking: A technique to pass information between verifiers,” in Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering, Cary, NC, USA, 2012.' ista: 'Beyer D, Henzinger TA, Keremoglu M, Wendler P. 2012. Conditional model checking: A technique to pass information between verifiers. Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering. FSE: Foundations of Software Engineering, 57.' mla: 'Beyer, Dirk, et al. “Conditional Model Checking: A Technique to Pass Information between Verifiers.” Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering, 57, ACM, 2012, doi:10.1145/2393596.2393664.' short: D. Beyer, T.A. Henzinger, M. Keremoglu, P. Wendler, in:, Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering, ACM, 2012. conference: end_date: 2012-11-16 location: Cary, NC, USA name: 'FSE: Foundations of Software Engineering' start_date: 2012-11-11 date_created: 2018-12-11T11:51:42Z date_published: 2012-11-01T00:00:00Z date_updated: 2021-01-12T06:50:18Z day: '01' department: - _id: ToHe doi: 10.1145/2393596.2393664 ec_funded: 1 language: - iso: eng main_file_link: - open_access: '1' url: http://arxiv.org/abs/1109.6926 month: '11' oa: 1 oa_version: Preprint project: - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Proceedings of the ACM SIGSOFT 20th International Symposium on the Foundations of Software Engineering publication_status: published publisher: ACM publist_id: '5826' quality_controlled: '1' scopus_import: 1 status: public title: 'Conditional model checking: A technique to pass information between verifiers' type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 year: '2012' ... --- _id: '1472' abstract: - lang: eng text: For G = GL 2, PGL 2, SL 2 we prove that the perverse filtration associated with the Hitchin map on the rational cohomology of the moduli space of twisted G-Higgs bundles on a compact Riemann surface C agrees with the weight filtration on the rational cohomology of the twisted G character variety of C when the cohomologies are identified via non-Abelian Hodge theory. The proof is accomplished by means of a study of the topology of the Hitchin map over the locus of integral spectral curves. acknowledgement: Mark Andrea A. de Cataldo was partially supported by N.S.A. and N.S.F. Tamás Hausel was supported by a Royal Society University Research Fellowship. Luca Migliorini was partially supported by PRIN 2007 project "Spazi di moduli e teoria di Lie" author: - first_name: Mark full_name: De Cataldo, Mark A last_name: De Cataldo - first_name: Tamas full_name: Tamas Hausel id: 4A0666D8-F248-11E8-B48F-1D18A9856A87 last_name: Hausel - first_name: Luca full_name: Migliorini, Luca last_name: Migliorini citation: ama: 'De Cataldo M, Hausel T, Migliorini L. Topology of hitchin systems and Hodge theory of character varieties: The case A 1. Annals of Mathematics. 2012;175(3):1329-1407. doi:10.4007/annals.2012.175.3.7' apa: 'De Cataldo, M., Hausel, T., & Migliorini, L. (2012). Topology of hitchin systems and Hodge theory of character varieties: The case A 1. Annals of Mathematics. Princeton University Press. https://doi.org/10.4007/annals.2012.175.3.7' chicago: 'De Cataldo, Mark, Tamás Hausel, and Luca Migliorini. “Topology of Hitchin Systems and Hodge Theory of Character Varieties: The Case A 1.” Annals of Mathematics. Princeton University Press, 2012. https://doi.org/10.4007/annals.2012.175.3.7.' ieee: 'M. De Cataldo, T. Hausel, and L. Migliorini, “Topology of hitchin systems and Hodge theory of character varieties: The case A 1,” Annals of Mathematics, vol. 175, no. 3. Princeton University Press, pp. 1329–1407, 2012.' ista: 'De Cataldo M, Hausel T, Migliorini L. 2012. Topology of hitchin systems and Hodge theory of character varieties: The case A 1. Annals of Mathematics. 175(3), 1329–1407.' mla: 'De Cataldo, Mark, et al. “Topology of Hitchin Systems and Hodge Theory of Character Varieties: The Case A 1.” Annals of Mathematics, vol. 175, no. 3, Princeton University Press, 2012, pp. 1329–407, doi:10.4007/annals.2012.175.3.7.' short: M. De Cataldo, T. Hausel, L. Migliorini, Annals of Mathematics 175 (2012) 1329–1407. date_created: 2018-12-11T11:52:13Z date_published: 2012-05-01T00:00:00Z date_updated: 2021-01-12T06:50:59Z day: '01' doi: 10.4007/annals.2012.175.3.7 extern: 1 intvolume: ' 175' issue: '3' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1004.1420 month: '05' oa: 1 page: 1329 - 1407 publication: Annals of Mathematics publication_status: published publisher: Princeton University Press publist_id: '5727' quality_controlled: 0 status: public title: 'Topology of hitchin systems and Hodge theory of character varieties: The case A 1' type: journal_article volume: 175 year: '2012' ... --- _id: '1471' abstract: - lang: eng text: 'Given a possibly reducible and non-reduced spectral cover π: X → C over a smooth projective complex curve C we determine the group of connected components of the Prym variety Prym(X/C). As an immediate application we show that the finite group of n-torsion points of the Jacobian of C acts trivially on the cohomology of the twisted SL n-Higgs moduli space up to the degree which is predicted by topological mirror symmetry. In particular this yields a new proof of a result of Harder-Narasimhan, showing that this finite group acts trivially on the cohomology of the twisted SL n stable bundle moduli space.' author: - first_name: Tamas full_name: Tamas Hausel id: 4A0666D8-F248-11E8-B48F-1D18A9856A87 last_name: Hausel - first_name: Christian full_name: Pauly, Christian last_name: Pauly citation: ama: Hausel T, Pauly C. Prym varieties of spectral covers. Geometry and Topology. 2012;16(3):1609-1638. doi:10.2140/gt.2012.16.1609 apa: Hausel, T., & Pauly, C. (2012). Prym varieties of spectral covers. Geometry and Topology. University of Warwick. https://doi.org/10.2140/gt.2012.16.1609 chicago: Hausel, Tamás, and Christian Pauly. “Prym Varieties of Spectral Covers.” Geometry and Topology. University of Warwick, 2012. https://doi.org/10.2140/gt.2012.16.1609. ieee: T. Hausel and C. Pauly, “Prym varieties of spectral covers,” Geometry and Topology, vol. 16, no. 3. University of Warwick, pp. 1609–1638, 2012. ista: Hausel T, Pauly C. 2012. Prym varieties of spectral covers. Geometry and Topology. 16(3), 1609–1638. mla: Hausel, Tamás, and Christian Pauly. “Prym Varieties of Spectral Covers.” Geometry and Topology, vol. 16, no. 3, University of Warwick, 2012, pp. 1609–38, doi:10.2140/gt.2012.16.1609. short: T. Hausel, C. Pauly, Geometry and Topology 16 (2012) 1609–1638. date_created: 2018-12-11T11:52:13Z date_published: 2012-08-01T00:00:00Z date_updated: 2021-01-12T06:50:58Z day: '01' doi: 10.2140/gt.2012.16.1609 extern: 1 intvolume: ' 16' issue: '3' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1012.4748 month: '08' oa: 1 page: 1609 - 1638 publication: Geometry and Topology publication_status: published publisher: University of Warwick publist_id: '5726' quality_controlled: 0 status: public title: Prym varieties of spectral covers type: journal_article volume: 16 year: '2012' ... --- _id: '171' abstract: - lang: eng text: For given non-zero integers a, b, q we investigate the density of solutions (x, y) ∈ ℤ2 to the binary cubic congruence ax2 + by3 ≡ 0 mod q, and use it to establish the Manin conjecture for a singular del Pezzo surface of degree 2 defined over ℚ. author: - first_name: Timothy D full_name: Timothy Browning id: 35827D50-F248-11E8-B48F-1D18A9856A87 last_name: Browning orcid: 0000-0002-8314-0177 - first_name: Stephan full_name: Baier, Stephan last_name: Baier citation: ama: Browning TD, Baier S. Inhomogeneous cubic congruences and rational points on del Pezzo surfaces. Journal fur die Reine und Angewandte Mathematik. 2012;2013(680):1-65. doi:https://doi.org/10.1515/crelle.2012.039 apa: Browning, T. D., & Baier, S. (2012). Inhomogeneous cubic congruences and rational points on del Pezzo surfaces. Journal Fur Die Reine Und Angewandte Mathematik. Walter de Gruyter. https://doi.org/10.1515/crelle.2012.039 chicago: Browning, Timothy D, and Stephan Baier. “Inhomogeneous Cubic Congruences and Rational Points on Del Pezzo Surfaces.” Journal Fur Die Reine Und Angewandte Mathematik. Walter de Gruyter, 2012. https://doi.org/10.1515/crelle.2012.039. ieee: T. D. Browning and S. Baier, “Inhomogeneous cubic congruences and rational points on del Pezzo surfaces,” Journal fur die Reine und Angewandte Mathematik, vol. 2013, no. 680. Walter de Gruyter, pp. 1–65, 2012. ista: Browning TD, Baier S. 2012. Inhomogeneous cubic congruences and rational points on del Pezzo surfaces. Journal fur die Reine und Angewandte Mathematik. 2013(680), 1–65. mla: Browning, Timothy D., and Stephan Baier. “Inhomogeneous Cubic Congruences and Rational Points on Del Pezzo Surfaces.” Journal Fur Die Reine Und Angewandte Mathematik, vol. 2013, no. 680, Walter de Gruyter, 2012, pp. 1–65, doi:https://doi.org/10.1515/crelle.2012.039. short: T.D. Browning, S. Baier, Journal Fur Die Reine Und Angewandte Mathematik 2013 (2012) 1–65. date_created: 2018-12-11T11:45:00Z date_published: 2012-04-03T00:00:00Z date_updated: 2021-01-12T06:52:41Z day: '03' doi: https://doi.org/10.1515/crelle.2012.039 extern: 1 intvolume: ' 2013' issue: '680' main_file_link: - open_access: '1' url: https://arxiv.org/abs/1011.3434 month: '04' oa: 1 page: 1 - 65 publication: Journal fur die Reine und Angewandte Mathematik publication_status: published publisher: Walter de Gruyter publist_id: '7750' quality_controlled: 0 status: public title: Inhomogeneous cubic congruences and rational points on del Pezzo surfaces type: journal_article volume: 2013 year: '2012' ... --- _id: '1725' abstract: - lang: eng text: The spatial organization of cell fates during development involves the interpretation of morphogen gradients by cellular signaling cascades and transcriptional networks. Recent studies use biophysical models, genetics, and quantitative imaging to unravel how tissue-level morphogen behavior arises from subcellular events. Moreover, data from several systems show that morphogen gradients, downstream signaling, and the activity of cell-intrinsic transcriptional networks change dynamically during pattern formation. Studies from Drosophila and now also vertebrates suggest that transcriptional network dynamics are central to the generation of gene expression patterns. Together, this leads to the view that pattern formation is an emergent behavior that results from the coordination of events occurring across molecular, cellular, and tissue scales. The development of novel approaches to study this complex process remains a challenge. acknowledgement: 'Funding provided by the Medical Research Council (UK). ' author: - first_name: Anna full_name: Anna Kicheva id: 3959A2A0-F248-11E8-B48F-1D18A9856A87 last_name: Kicheva orcid: 0000-0003-4509-4998 - first_name: Michael full_name: Cohen, Michael H last_name: Cohen - first_name: James full_name: Briscoe, James last_name: Briscoe citation: ama: 'Kicheva A, Cohen M, Briscoe J. Developmental pattern formation: Insights from physics and biology. Science. 2012;338(6104):210-212. doi:10.1126/science.1225182' apa: 'Kicheva, A., Cohen, M., & Briscoe, J. (2012). Developmental pattern formation: Insights from physics and biology. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.1225182' chicago: 'Kicheva, Anna, Michael Cohen, and James Briscoe. “Developmental Pattern Formation: Insights from Physics and Biology.” Science. American Association for the Advancement of Science, 2012. https://doi.org/10.1126/science.1225182.' ieee: 'A. Kicheva, M. Cohen, and J. Briscoe, “Developmental pattern formation: Insights from physics and biology,” Science, vol. 338, no. 6104. American Association for the Advancement of Science, pp. 210–212, 2012.' ista: 'Kicheva A, Cohen M, Briscoe J. 2012. Developmental pattern formation: Insights from physics and biology. Science. 338(6104), 210–212.' mla: 'Kicheva, Anna, et al. “Developmental Pattern Formation: Insights from Physics and Biology.” Science, vol. 338, no. 6104, American Association for the Advancement of Science, 2012, pp. 210–12, doi:10.1126/science.1225182.' short: A. Kicheva, M. Cohen, J. Briscoe, Science 338 (2012) 210–212. date_created: 2018-12-11T11:53:40Z date_published: 2012-10-12T00:00:00Z date_updated: 2021-01-12T06:52:47Z day: '12' doi: 10.1126/science.1225182 extern: 1 intvolume: ' 338' issue: '6104' month: '10' page: 210 - 212 publication: Science publication_status: published publisher: American Association for the Advancement of Science publist_id: '5404' quality_controlled: 0 status: public title: 'Developmental pattern formation: Insights from physics and biology' type: journal_article volume: 338 year: '2012' ... --- _id: '1757' abstract: - lang: eng text: Self-assembled Ge wires with a height of only 3 unit cells and a length of up to 2 micrometers were grown on Si(001) by means of a catalyst-free method based on molecular beam epitaxy. The wires grow horizontally along either the [100] or the [010] direction. On atomically flat surfaces, they exhibit a highly uniform, triangular cross section. A simple thermodynamic model accounts for the existence of a preferential base width for longitudinal expansion, in quantitative agreement with the experimental findings. Despite the absence of intentional doping, the first transistor-type devices made from single wires show low-resistive electrical contacts and single-hole transport at sub-Kelvin temperatures. In view of their exceptionally small and self-defined cross section, these Ge wires hold promise for the realization of hole systems with exotic properties and provide a new development route for silicon-based nanoelectronics. acknowledgement: We acknowledge the financial support by the DFG SPP1386, P. Chen and D. J. Thurmer for MBE assistance, R. Wacquez for providing the ultrathin SOI wafers, and G. Bauer, Y. Hu, X. Jehl, S. Kiravittaya, C. Klöffel, E. J. H. Lee, F. Liu, D. Loss, and S. Mahapatra for helpful discussions. G. K. acknowledges support from the European commission via a Marie Curie Carrer Integration Grant. S. D. F. acknowledges support from the European Research Council through the starting grant program author: - first_name: Jianjun full_name: Zhang, Jianjun last_name: Zhang - first_name: Georgios full_name: Georgios Katsaros id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros - first_name: Francesco full_name: Montalenti, Francesco last_name: Montalenti - first_name: Daniele full_name: Scopece, Daniele last_name: Scopece - first_name: Roman full_name: Rezaev, Roman O last_name: Rezaev - first_name: Christine full_name: Mickel, Christine H last_name: Mickel - first_name: Bernd full_name: Rellinghaus, Bernd last_name: Rellinghaus - first_name: Leo full_name: Miglio, Leo P last_name: Miglio - first_name: Silvano full_name: De Franceschi, Silvano last_name: De Franceschi - first_name: Armando full_name: Rastelli, Armando last_name: Rastelli - first_name: Oliver full_name: Schmidt, Oliver G last_name: Schmidt citation: ama: Zhang J, Katsaros G, Montalenti F, et al. Monolithic growth of ultrathin Ge nanowires on Si(001) . Physical Review Letters. 2012;109(8). doi:10.1103/PhysRevLett.109.085502 apa: Zhang, J., Katsaros, G., Montalenti, F., Scopece, D., Rezaev, R., Mickel, C., … Schmidt, O. (2012). Monolithic growth of ultrathin Ge nanowires on Si(001) . Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.085502 chicago: Zhang, Jianjun, Georgios Katsaros, Francesco Montalenti, Daniele Scopece, Roman Rezaev, Christine Mickel, Bernd Rellinghaus, et al. “Monolithic Growth of Ultrathin Ge Nanowires on Si(001) .” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.085502. ieee: J. Zhang et al., “Monolithic growth of ultrathin Ge nanowires on Si(001) ,” Physical Review Letters, vol. 109, no. 8. American Physical Society, 2012. ista: Zhang J, Katsaros G, Montalenti F, Scopece D, Rezaev R, Mickel C, Rellinghaus B, Miglio L, De Franceschi S, Rastelli A, Schmidt O. 2012. Monolithic growth of ultrathin Ge nanowires on Si(001) . Physical Review Letters. 109(8). mla: Zhang, Jianjun, et al. “Monolithic Growth of Ultrathin Ge Nanowires on Si(001) .” Physical Review Letters, vol. 109, no. 8, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.085502. short: J. Zhang, G. Katsaros, F. Montalenti, D. Scopece, R. Rezaev, C. Mickel, B. Rellinghaus, L. Miglio, S. De Franceschi, A. Rastelli, O. Schmidt, Physical Review Letters 109 (2012). date_created: 2018-12-11T11:53:51Z date_published: 2012-08-23T00:00:00Z date_updated: 2021-01-12T06:53:00Z day: '23' doi: 10.1103/PhysRevLett.109.085502 extern: 1 intvolume: ' 109' issue: '8' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1208.0666 month: '08' oa: 1 publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '5367' quality_controlled: 0 status: public title: 'Monolithic growth of ultrathin Ge nanowires on Si(001) ' type: journal_article volume: 109 year: '2012' ... --- _id: '1758' abstract: - lang: eng text: We studied the low-energy states of spin-1/2 quantum dots defined in InAs/InP nanowires and coupled to aluminum superconducting leads. By varying the superconducting gap Δ with a magnetic field B we investigated the transition from strong coupling Δ≪T K to weak-coupling Δ≫T K, where T K is the Kondo temperature. Below the critical field, we observe a persisting zero-bias Kondo resonance that vanishes only for low B or higher temperatures, leaving the room to more robust subgap structures at bias voltages between Δ and 2Δ. For strong and approximately symmetric tunnel couplings, a Josephson supercurrent is observed in addition to the Kondo peak. We ascribe the coexistence of a Kondo resonance and a superconducting gap to a significant density of intragap quasiparticle states, and the finite-bias subgap structures to tunneling through Shiba states. Our results, supported by numerical calculations, own relevance also in relation to tunnel-spectroscopy experiments aiming at the observation of Majorana fermions in hybrid nanostructures. acknowledgement: This work was supported by the EU Marie Curie program and by the Agence Nationale de la Recherche. R. A. acknowledges support from the Spanish Ministry of Science and Innovation through Grant No. FIS2009-08744 author: - first_name: Eduardo full_name: Lee, Eduardo J last_name: Lee - first_name: Xiaocheng full_name: Jiang, Xiaocheng last_name: Jiang - first_name: Ramón full_name: Aguado, Ramón last_name: Aguado - first_name: Georgios full_name: Georgios Katsaros id: 38DB5788-F248-11E8-B48F-1D18A9856A87 last_name: Katsaros - first_name: Charles full_name: Lieber, Charles M last_name: Lieber - first_name: Silvano full_name: De Franceschi, Silvano last_name: De Franceschi citation: ama: Lee E, Jiang X, Aguado R, Katsaros G, Lieber C, De Franceschi S. Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Physical Review Letters. 2012;109(18). doi:10.1103/PhysRevLett.109.186802 apa: Lee, E., Jiang, X., Aguado, R., Katsaros, G., Lieber, C., & De Franceschi, S. (2012). Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.186802 chicago: Lee, Eduardo, Xiaocheng Jiang, Ramón Aguado, Georgios Katsaros, Charles Lieber, and Silvano De Franceschi. “Zero-Bias Anomaly in a Nanowire Quantum Dot Coupled to Superconductors.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.186802. ieee: E. Lee, X. Jiang, R. Aguado, G. Katsaros, C. Lieber, and S. De Franceschi, “Zero-bias anomaly in a nanowire quantum dot coupled to superconductors,” Physical Review Letters, vol. 109, no. 18. American Physical Society, 2012. ista: Lee E, Jiang X, Aguado R, Katsaros G, Lieber C, De Franceschi S. 2012. Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Physical Review Letters. 109(18). mla: Lee, Eduardo, et al. “Zero-Bias Anomaly in a Nanowire Quantum Dot Coupled to Superconductors.” Physical Review Letters, vol. 109, no. 18, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.186802. short: E. Lee, X. Jiang, R. Aguado, G. Katsaros, C. Lieber, S. De Franceschi, Physical Review Letters 109 (2012). date_created: 2018-12-11T11:53:51Z date_published: 2012-10-31T00:00:00Z date_updated: 2021-01-12T06:53:01Z day: '31' doi: 10.1103/PhysRevLett.109.186802 extern: 1 intvolume: ' 109' issue: '18' main_file_link: - open_access: '1' url: http://arxiv.org/abs/1207.1259 month: '10' oa: 1 publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '5366' quality_controlled: 0 status: public title: Zero-bias anomaly in a nanowire quantum dot coupled to superconductors type: journal_article volume: 109 year: '2012' ...