[{"publication_identifier":{"eisbn":["9783319040998"],"isbn":["9783319040981"],"eissn":["2197-666X"],"issn":["1612-3786"]},"doi":"10.1007/978-3-319-04099-8_4","quality_controlled":"1","project":[{"name":"Topological Complex Systems","_id":"255D761E-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"318493"}],"series_title":"Mathematics and Visualization","language":[{"iso":"eng"}],"author":[{"full_name":"Kasten, Jens","first_name":"Jens","last_name":"Kasten"},{"id":"4505473A-F248-11E8-B48F-1D18A9856A87","full_name":"Reininghaus, Jan","last_name":"Reininghaus","first_name":"Jan"},{"first_name":"Wieland","last_name":"Reich","full_name":"Reich, Wieland"},{"full_name":"Scheuermann, Gerik","last_name":"Scheuermann","first_name":"Gerik"}],"day":"19","title":"Toward the extraction of saddle periodic orbits","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"Springer","department":[{"_id":"HeEd"}],"place":"Cham","publication":"Topological Methods in Data Analysis and Visualization III ","scopus_import":"1","ec_funded":1,"article_processing_charge":"No","publication_status":"published","date_published":"2014-03-19T00:00:00Z","status":"public","editor":[{"first_name":"Peer-Timo","last_name":"Bremer","full_name":"Bremer, Peer-Timo"},{"full_name":"Hotz, Ingrid","first_name":"Ingrid","last_name":"Hotz"},{"full_name":"Pascucci, Valerio","last_name":"Pascucci","first_name":"Valerio"},{"full_name":"Peikert, Ronald","first_name":"Ronald","last_name":"Peikert"}],"intvolume":"         1","citation":{"mla":"Kasten, Jens, et al. “Toward the Extraction of Saddle Periodic Orbits.” <i>Topological Methods in Data Analysis and Visualization III </i>, edited by Peer-Timo Bremer et al., vol. 1, Springer, 2014, pp. 55–69, doi:<a href=\"https://doi.org/10.1007/978-3-319-04099-8_4\">10.1007/978-3-319-04099-8_4</a>.","ista":"Kasten J, Reininghaus J, Reich W, Scheuermann G. 2014.Toward the extraction of saddle periodic orbits. In: Topological Methods in Data Analysis and Visualization III . vol. 1, 55–69.","apa":"Kasten, J., Reininghaus, J., Reich, W., &#38; Scheuermann, G. (2014). Toward the extraction of saddle periodic orbits. In P.-T. Bremer, I. Hotz, V. Pascucci, &#38; R. Peikert (Eds.), <i>Topological Methods in Data Analysis and Visualization III </i> (Vol. 1, pp. 55–69). Cham: Springer. <a href=\"https://doi.org/10.1007/978-3-319-04099-8_4\">https://doi.org/10.1007/978-3-319-04099-8_4</a>","ama":"Kasten J, Reininghaus J, Reich W, Scheuermann G. Toward the extraction of saddle periodic orbits. In: Bremer P-T, Hotz I, Pascucci V, Peikert R, eds. <i>Topological Methods in Data Analysis and Visualization III </i>. Vol 1. Mathematics and Visualization. Cham: Springer; 2014:55-69. doi:<a href=\"https://doi.org/10.1007/978-3-319-04099-8_4\">10.1007/978-3-319-04099-8_4</a>","short":"J. Kasten, J. Reininghaus, W. Reich, G. Scheuermann, in:, P.-T. Bremer, I. Hotz, V. Pascucci, R. Peikert (Eds.), Topological Methods in Data Analysis and Visualization III , Springer, Cham, 2014, pp. 55–69.","ieee":"J. Kasten, J. Reininghaus, W. Reich, and G. Scheuermann, “Toward the extraction of saddle periodic orbits,” in <i>Topological Methods in Data Analysis and Visualization III </i>, vol. 1, P.-T. Bremer, I. Hotz, V. Pascucci, and R. Peikert, Eds. Cham: Springer, 2014, pp. 55–69.","chicago":"Kasten, Jens, Jan Reininghaus, Wieland Reich, and Gerik Scheuermann. “Toward the Extraction of Saddle Periodic Orbits.” In <i>Topological Methods in Data Analysis and Visualization III </i>, edited by Peer-Timo Bremer, Ingrid Hotz, Valerio Pascucci, and Ronald Peikert, 1:55–69. Mathematics and Visualization. Cham: Springer, 2014. <a href=\"https://doi.org/10.1007/978-3-319-04099-8_4\">https://doi.org/10.1007/978-3-319-04099-8_4</a>."},"page":"55-69","oa_version":"None","month":"03","type":"book_chapter","date_updated":"2022-06-21T12:01:47Z","abstract":[{"text":"Saddle periodic orbits are an essential and stable part of the topological skeleton of a 3D vector field. Nevertheless, there is currently no efficient algorithm to robustly extract these features. In this chapter, we present a novel technique to extract saddle periodic orbits. Exploiting the analytic properties of such an orbit, we propose a scalar measure based on the finite-time Lyapunov exponent (FTLE) that indicates its presence. Using persistent homology, we can then extract the robust cycles of this field. These cycles thereby represent the saddle periodic orbits of the given vector field. We discuss the different existing FTLE approximation schemes regarding their applicability to this specific problem and propose an adapted version of FTLE called Normalized Velocity Separation. Finally, we evaluate our method using simple analytic vector field data.","lang":"eng"}],"volume":1,"date_created":"2022-03-21T07:11:23Z","acknowledgement":"First, we thank the reviewers of this paper for their ideas and critical comments. In addition, we thank Ronny Peikert and Filip Sadlo for a fruitful discussions. This research is supported by the European Commission under the TOPOSYS project FP7-ICT-318493-STREP, the European Social Fund (ESF App. No. 100098251), and the European Science Foundation under the ACAT Research Network Program.","year":"2014","_id":"10893"},{"date_created":"2022-03-21T07:12:16Z","volume":8592,"oa_version":"None","type":"conference","month":"09","abstract":[{"text":"PHAT is a C++ library for the computation of persistent homology by matrix reduction. We aim for a simple generic design that decouples algorithms from data structures without sacrificing efficiency or user-friendliness. This makes PHAT a versatile platform for experimenting with algorithmic ideas and comparing them to state of the art implementations.","lang":"eng"}],"date_updated":"2023-09-20T09:42:40Z","page":"137-143","_id":"10894","year":"2014","date_published":"2014-09-01T00:00:00Z","publication_status":"published","citation":{"short":"U. Bauer, M. Kerber, J. Reininghaus, H. Wagner, in:, ICMS 2014: International Congress on Mathematical Software, Springer Berlin Heidelberg, Berlin, Heidelberg, 2014, pp. 137–143.","ieee":"U. Bauer, M. Kerber, J. Reininghaus, and H. Wagner, “PHAT – Persistent Homology Algorithms Toolbox,” in <i>ICMS 2014: International Congress on Mathematical Software</i>, Seoul, South Korea, 2014, vol. 8592, pp. 137–143.","chicago":"Bauer, Ulrich, Michael Kerber, Jan Reininghaus, and Hubert Wagner. “PHAT – Persistent Homology Algorithms Toolbox.” In <i>ICMS 2014: International Congress on Mathematical Software</i>, 8592:137–43. LNCS. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. <a href=\"https://doi.org/10.1007/978-3-662-44199-2_24\">https://doi.org/10.1007/978-3-662-44199-2_24</a>.","ista":"Bauer U, Kerber M, Reininghaus J, Wagner H. 2014. PHAT – Persistent Homology Algorithms Toolbox. ICMS 2014: International Congress on Mathematical Software. ICMS: International Congress on Mathematical SoftwareLNCS vol. 8592, 137–143.","mla":"Bauer, Ulrich, et al. “PHAT – Persistent Homology Algorithms Toolbox.” <i>ICMS 2014: International Congress on Mathematical Software</i>, vol. 8592, Springer Berlin Heidelberg, 2014, pp. 137–43, doi:<a href=\"https://doi.org/10.1007/978-3-662-44199-2_24\">10.1007/978-3-662-44199-2_24</a>.","apa":"Bauer, U., Kerber, M., Reininghaus, J., &#38; Wagner, H. (2014). PHAT – Persistent Homology Algorithms Toolbox. In <i>ICMS 2014: International Congress on Mathematical Software</i> (Vol. 8592, pp. 137–143). Berlin, Heidelberg: Springer Berlin Heidelberg. <a href=\"https://doi.org/10.1007/978-3-662-44199-2_24\">https://doi.org/10.1007/978-3-662-44199-2_24</a>","ama":"Bauer U, Kerber M, Reininghaus J, Wagner H. PHAT – Persistent Homology Algorithms Toolbox. In: <i>ICMS 2014: International Congress on Mathematical Software</i>. Vol 8592. LNCS. Berlin, Heidelberg: Springer Berlin Heidelberg; 2014:137-143. doi:<a href=\"https://doi.org/10.1007/978-3-662-44199-2_24\">10.1007/978-3-662-44199-2_24</a>"},"intvolume":"      8592","related_material":{"record":[{"relation":"later_version","id":"1433","status":"public"}]},"status":"public","title":"PHAT – Persistent Homology Algorithms Toolbox","day":"01","author":[{"last_name":"Bauer","first_name":"Ulrich","full_name":"Bauer, Ulrich","orcid":"0000-0002-9683-0724","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Michael","last_name":"Kerber","full_name":"Kerber, Michael"},{"first_name":"Jan","last_name":"Reininghaus","id":"4505473A-F248-11E8-B48F-1D18A9856A87","full_name":"Reininghaus, Jan"},{"full_name":"Wagner, Hubert","first_name":"Hubert","last_name":"Wagner"}],"article_processing_charge":"No","scopus_import":"1","publication":"ICMS 2014: International Congress on Mathematical Software","department":[{"_id":"HeEd"}],"place":"Berlin, Heidelberg","publisher":"Springer Berlin Heidelberg","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","quality_controlled":"1","doi":"10.1007/978-3-662-44199-2_24","publication_identifier":{"issn":["0302-9743"],"eisbn":["9783662441992"],"eissn":["1611-3349"],"isbn":["9783662441985"]},"language":[{"iso":"eng"}],"conference":{"name":"ICMS: International Congress on Mathematical Software","location":"Seoul, South Korea","start_date":"2014-08-05","end_date":"2014-08-09"},"series_title":"LNCS"},{"keyword":["General Biochemistry","Genetics and Molecular Biology"],"language":[{"iso":"eng"}],"issue":"5","publication_identifier":{"issn":["0092-8674"]},"doi":"10.1016/j.cell.2014.02.004","quality_controlled":"1","publisher":"Elsevier","user_id":"72615eeb-f1f3-11ec-aa25-d4573ddc34fd","pmid":1,"publication":"Cell","scopus_import":"1","article_processing_charge":"No","article_type":"original","author":[{"full_name":"Buchwalter, Abigail","last_name":"Buchwalter","first_name":"Abigail"},{"last_name":"HETZER","first_name":"Martin W","full_name":"HETZER, Martin W","orcid":"0000-0002-2111-992X","id":"86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed"}],"day":"27","title":"Nuclear pores set the speed limit for mitosis","external_id":{"pmid":["24581486"]},"status":"public","extern":"1","intvolume":"       156","citation":{"mla":"Buchwalter, Abigail, and Martin Hetzer. “Nuclear Pores Set the Speed Limit for Mitosis.” <i>Cell</i>, vol. 156, no. 5, Elsevier, 2014, pp. 868–69, doi:<a href=\"https://doi.org/10.1016/j.cell.2014.02.004\">10.1016/j.cell.2014.02.004</a>.","ista":"Buchwalter A, Hetzer M. 2014. Nuclear pores set the speed limit for mitosis. Cell. 156(5), 868–869.","apa":"Buchwalter, A., &#38; Hetzer, M. (2014). Nuclear pores set the speed limit for mitosis. <i>Cell</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.cell.2014.02.004\">https://doi.org/10.1016/j.cell.2014.02.004</a>","ama":"Buchwalter A, Hetzer M. Nuclear pores set the speed limit for mitosis. <i>Cell</i>. 2014;156(5):868-869. doi:<a href=\"https://doi.org/10.1016/j.cell.2014.02.004\">10.1016/j.cell.2014.02.004</a>","short":"A. Buchwalter, M. Hetzer, Cell 156 (2014) 868–869.","ieee":"A. Buchwalter and M. Hetzer, “Nuclear pores set the speed limit for mitosis,” <i>Cell</i>, vol. 156, no. 5. Elsevier, pp. 868–869, 2014.","chicago":"Buchwalter, Abigail, and Martin Hetzer. “Nuclear Pores Set the Speed Limit for Mitosis.” <i>Cell</i>. Elsevier, 2014. <a href=\"https://doi.org/10.1016/j.cell.2014.02.004\">https://doi.org/10.1016/j.cell.2014.02.004</a>."},"publication_status":"published","oa":1,"date_published":"2014-02-27T00:00:00Z","main_file_link":[{"url":"https://doi.org/10.1016/j.cell.2014.02.004","open_access":"1"}],"year":"2014","_id":"11080","page":"868-869","date_updated":"2022-07-18T08:44:33Z","abstract":[{"lang":"eng","text":"The spindle assembly checkpoint prevents separation of sister chromatids until each kinetochore is attached to the mitotic spindle. Rodriguez-Bravo et al. report that the nuclear pore complex scaffolds spindle assembly checkpoint signaling in interphase, providing a store of inhibitory signals that limits the speed of the subsequent mitosis."}],"oa_version":"Published Version","month":"02","type":"journal_article","volume":156,"date_created":"2022-04-07T07:50:04Z"},{"quality_controlled":"1","doi":"10.1083/jcb.201402003","publication_identifier":{"issn":["1540-8140","0021-9525"]},"issue":"2","language":[{"iso":"eng"}],"keyword":["Cell Biology"],"title":"Breaching the nuclear envelope in development and disease","day":"21","author":[{"full_name":"Hatch, Emily","last_name":"Hatch","first_name":"Emily"},{"id":"86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed","orcid":"0000-0002-2111-992X","full_name":"HETZER, Martin W","first_name":"Martin W","last_name":"HETZER"}],"article_type":"review","article_processing_charge":"No","scopus_import":"1","publication":"Journal of Cell Biology","pmid":1,"user_id":"72615eeb-f1f3-11ec-aa25-d4573ddc34fd","publisher":"Rockefeller University Press","main_file_link":[{"url":"https://doi.org/10.1083/jcb.201402003","open_access":"1"}],"date_published":"2014-04-21T00:00:00Z","publication_status":"published","oa":1,"citation":{"chicago":"Hatch, Emily, and Martin Hetzer. “Breaching the Nuclear Envelope in Development and Disease.” <i>Journal of Cell Biology</i>. Rockefeller University Press, 2014. <a href=\"https://doi.org/10.1083/jcb.201402003\">https://doi.org/10.1083/jcb.201402003</a>.","ieee":"E. Hatch and M. Hetzer, “Breaching the nuclear envelope in development and disease,” <i>Journal of Cell Biology</i>, vol. 205, no. 2. Rockefeller University Press, pp. 133–141, 2014.","short":"E. Hatch, M. Hetzer, Journal of Cell Biology 205 (2014) 133–141.","ama":"Hatch E, Hetzer M. Breaching the nuclear envelope in development and disease. <i>Journal of Cell Biology</i>. 2014;205(2):133-141. doi:<a href=\"https://doi.org/10.1083/jcb.201402003\">10.1083/jcb.201402003</a>","apa":"Hatch, E., &#38; Hetzer, M. (2014). Breaching the nuclear envelope in development and disease. <i>Journal of Cell Biology</i>. Rockefeller University Press. <a href=\"https://doi.org/10.1083/jcb.201402003\">https://doi.org/10.1083/jcb.201402003</a>","ista":"Hatch E, Hetzer M. 2014. Breaching the nuclear envelope in development and disease. Journal of Cell Biology. 205(2), 133–141.","mla":"Hatch, Emily, and Martin Hetzer. “Breaching the Nuclear Envelope in Development and Disease.” <i>Journal of Cell Biology</i>, vol. 205, no. 2, Rockefeller University Press, 2014, pp. 133–41, doi:<a href=\"https://doi.org/10.1083/jcb.201402003\">10.1083/jcb.201402003</a>."},"intvolume":"       205","extern":"1","status":"public","external_id":{"pmid":["24751535"]},"date_created":"2022-04-07T07:50:13Z","volume":205,"oa_version":"Published Version","month":"04","type":"journal_article","date_updated":"2022-07-18T08:45:09Z","abstract":[{"lang":"eng","text":"In eukaryotic cells the nuclear genome is enclosed by the nuclear envelope (NE). In metazoans, the NE breaks down in mitosis and it has been assumed that the physical barrier separating nucleoplasm and cytoplasm remains intact during the rest of the cell cycle and cell differentiation. However, recent studies suggest that nonmitotic NE remodeling plays a critical role in development, virus infection, laminopathies, and cancer. Although the mechanisms underlying these NE restructuring events are currently being defined, one common theme is activation of protein kinase C family members in the interphase nucleus to disrupt the nuclear lamina, demonstrating the importance of the lamina in maintaining nuclear integrity."}],"page":"133-141","_id":"11081","year":"2014"},{"oa":1,"publication_status":"published","main_file_link":[{"url":"https://doi.org/10.1091/mbc.e14-04-0865","open_access":"1"}],"date_published":"2014-08-15T00:00:00Z","status":"public","citation":{"short":"A.L. Buchwalter, Y. Liang, M. Hetzer, Molecular Biology of the Cell 25 (2014) 2472–2484.","chicago":"Buchwalter, Abigail L., Yun Liang, and Martin Hetzer. “Nup50 Is Required for Cell Differentiation and Exhibits Transcription-Dependent Dynamics.” <i>Molecular Biology of the Cell</i>. American Society for Cell Biology, 2014. <a href=\"https://doi.org/10.1091/mbc.e14-04-0865\">https://doi.org/10.1091/mbc.e14-04-0865</a>.","ieee":"A. L. Buchwalter, Y. Liang, and M. Hetzer, “Nup50 is required for cell differentiation and exhibits transcription-dependent dynamics,” <i>Molecular Biology of the Cell</i>, vol. 25, no. 16. American Society for Cell Biology, pp. 2472–2484, 2014.","apa":"Buchwalter, A. L., Liang, Y., &#38; Hetzer, M. (2014). Nup50 is required for cell differentiation and exhibits transcription-dependent dynamics. <i>Molecular Biology of the Cell</i>. American Society for Cell Biology. <a href=\"https://doi.org/10.1091/mbc.e14-04-0865\">https://doi.org/10.1091/mbc.e14-04-0865</a>","ista":"Buchwalter AL, Liang Y, Hetzer M. 2014. Nup50 is required for cell differentiation and exhibits transcription-dependent dynamics. Molecular Biology of the Cell. 25(16), 2472–2484.","mla":"Buchwalter, Abigail L., et al. “Nup50 Is Required for Cell Differentiation and Exhibits Transcription-Dependent Dynamics.” <i>Molecular Biology of the Cell</i>, vol. 25, no. 16, American Society for Cell Biology, 2014, pp. 2472–84, doi:<a href=\"https://doi.org/10.1091/mbc.e14-04-0865\">10.1091/mbc.e14-04-0865</a>.","ama":"Buchwalter AL, Liang Y, Hetzer M. Nup50 is required for cell differentiation and exhibits transcription-dependent dynamics. <i>Molecular Biology of the Cell</i>. 2014;25(16):2472-2484. doi:<a href=\"https://doi.org/10.1091/mbc.e14-04-0865\">10.1091/mbc.e14-04-0865</a>"},"intvolume":"        25","extern":"1","date_updated":"2022-07-18T08:45:20Z","abstract":[{"text":"The nuclear pore complex (NPC) plays a critical role in gene expression by mediating import of transcription regulators into the nucleus and export of RNA transcripts to the cytoplasm. Emerging evidence suggests that in addition to mediating transport, a subset of nucleoporins (Nups) engage in transcriptional activation and elongation at genomic loci that are not associated with NPCs. The underlying mechanism and regulation of Nup mobility on and off nuclear pores remain unclear. Here we show that Nup50 is a mobile Nup with a pronounced presence both at the NPC and in the nucleoplasm that can move between these different localizations. Strikingly, the dynamic behavior of Nup50 in both locations is dependent on active transcription by RNA polymerase II and requires the N-terminal half of the protein, which contains importin α– and Nup153-binding domains. However, Nup50 dynamics are independent of importin α, Nup153, and Nup98, even though the latter two proteins also exhibit transcription-dependent mobility. Of interest, depletion of Nup50 from C2C12 myoblasts does not affect cell proliferation but inhibits differentiation into myotubes. Taken together, our results suggest a transport-independent role for Nup50 in chromatin biology that occurs away from the NPC.","lang":"eng"}],"oa_version":"Published Version","type":"journal_article","month":"08","page":"2472-2484","date_created":"2022-04-07T07:50:24Z","volume":25,"year":"2014","_id":"11082","publication_identifier":{"issn":["1059-1524","1939-4586"]},"quality_controlled":"1","doi":"10.1091/mbc.e14-04-0865","language":[{"iso":"eng"}],"issue":"16","keyword":["Cell Biology","Molecular Biology"],"day":"15","author":[{"full_name":"Buchwalter, Abigail L.","first_name":"Abigail L.","last_name":"Buchwalter"},{"last_name":"Liang","first_name":"Yun","full_name":"Liang, Yun"},{"orcid":"0000-0002-2111-992X","id":"86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed","full_name":"HETZER, Martin W","first_name":"Martin W","last_name":"HETZER"}],"title":"Nup50 is required for cell differentiation and exhibits transcription-dependent dynamics","user_id":"72615eeb-f1f3-11ec-aa25-d4573ddc34fd","publisher":"American Society for Cell Biology","scopus_import":"1","article_processing_charge":"No","article_type":"original","publication":"Molecular Biology of the Cell"},{"keyword":["Space and Planetary Science","Astronomy and Astrophysics","galaxies: abundances","galaxies: evolution","galaxies: kinematics and dynamics"],"issue":"3","language":[{"iso":"eng"}],"doi":"10.1093/mnras/stu1343","quality_controlled":"1","publication_identifier":{"issn":["0035-8711"],"eissn":["1365-2966"]},"publication":"Monthly Notices of the Royal Astronomical Society","article_type":"original","scopus_import":"1","article_processing_charge":"No","publisher":"Oxford University Press","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","arxiv":1,"title":"A relationship between specific star formation rate and metallicity gradient within z ∼ 1 galaxies from KMOS-HiZELS","author":[{"last_name":"Stott","first_name":"John P.","full_name":"Stott, John P."},{"full_name":"Sobral, David","first_name":"David","last_name":"Sobral"},{"full_name":"Swinbank, A. M.","last_name":"Swinbank","first_name":"A. M."},{"last_name":"Smail","first_name":"Ian","full_name":"Smail, Ian"},{"last_name":"Bower","first_name":"Richard","full_name":"Bower, Richard"},{"full_name":"Best, Philip N.","last_name":"Best","first_name":"Philip N."},{"full_name":"Sharples, Ray M.","first_name":"Ray M.","last_name":"Sharples"},{"last_name":"Geach","first_name":"James E.","full_name":"Geach, James E."},{"last_name":"Matthee","first_name":"Jorryt J","orcid":"0000-0003-2871-127X","id":"7439a258-f3c0-11ec-9501-9df22fe06720","full_name":"Matthee, Jorryt J"}],"day":"21","extern":"1","intvolume":"       443","citation":{"ama":"Stott JP, Sobral D, Swinbank AM, et al. A relationship between specific star formation rate and metallicity gradient within z ∼ 1 galaxies from KMOS-HiZELS. <i>Monthly Notices of the Royal Astronomical Society</i>. 2014;443(3):2695-2704. doi:<a href=\"https://doi.org/10.1093/mnras/stu1343\">10.1093/mnras/stu1343</a>","apa":"Stott, J. P., Sobral, D., Swinbank, A. M., Smail, I., Bower, R., Best, P. N., … Matthee, J. J. (2014). A relationship between specific star formation rate and metallicity gradient within z ∼ 1 galaxies from KMOS-HiZELS. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/stu1343\">https://doi.org/10.1093/mnras/stu1343</a>","mla":"Stott, John P., et al. “A Relationship between Specific Star Formation Rate and Metallicity Gradient within z ∼ 1 Galaxies from KMOS-HiZELS.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 443, no. 3, Oxford University Press, 2014, pp. 2695–704, doi:<a href=\"https://doi.org/10.1093/mnras/stu1343\">10.1093/mnras/stu1343</a>.","ista":"Stott JP, Sobral D, Swinbank AM, Smail I, Bower R, Best PN, Sharples RM, Geach JE, Matthee JJ. 2014. A relationship between specific star formation rate and metallicity gradient within z ∼ 1 galaxies from KMOS-HiZELS. Monthly Notices of the Royal Astronomical Society. 443(3), 2695–2704.","chicago":"Stott, John P., David Sobral, A. M. Swinbank, Ian Smail, Richard Bower, Philip N. Best, Ray M. Sharples, James E. Geach, and Jorryt J Matthee. “A Relationship between Specific Star Formation Rate and Metallicity Gradient within z ∼ 1 Galaxies from KMOS-HiZELS.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2014. <a href=\"https://doi.org/10.1093/mnras/stu1343\">https://doi.org/10.1093/mnras/stu1343</a>.","ieee":"J. P. Stott <i>et al.</i>, “A relationship between specific star formation rate and metallicity gradient within z ∼ 1 galaxies from KMOS-HiZELS,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 443, no. 3. Oxford University Press, pp. 2695–2704, 2014.","short":"J.P. Stott, D. Sobral, A.M. Swinbank, I. Smail, R. Bower, P.N. Best, R.M. Sharples, J.E. Geach, J.J. Matthee, Monthly Notices of the Royal Astronomical Society 443 (2014) 2695–2704."},"status":"public","external_id":{"arxiv":["1407.1047"]},"date_published":"2014-09-21T00:00:00Z","main_file_link":[{"url":"https://arxiv.org/abs/1407.1047","open_access":"1"}],"oa":1,"publication_status":"published","_id":"11582","acknowledgement":"First, we acknowledge the referee for their comments, which have improved the clarity of this paper. JPS and IRS acknowledge support from STFC (ST/I001573/1). IRS also acknowledges support from the ERC Advanced Investigator programme DUSTYGAL and a Royal Society/Wolfson Merit Award. DS acknowledges financial support from NWO through a Veni fellowship and from FCT through the award of an FCT-IF starting grant. PNB acknowledges STFC for financial support.","year":"2014","volume":443,"date_created":"2022-07-14T12:16:10Z","page":"2695-2704","oa_version":"Preprint","month":"09","type":"journal_article","abstract":[{"lang":"eng","text":"We have observed a sample of typical z ∼ 1 star-forming galaxies, selected from the HiZELS survey, with the new K-band Multi-Object Spectrograph (KMOS) near-infrared, multi-integral field unit instrument on the Very Large Telescope (VLT), in order to obtain their dynamics and metallicity gradients. The majority of our galaxies have a metallicity gradient consistent with being flat or negative (i.e. higher metallicity cores than outskirts). Intriguingly, we find a trend between metallicity gradient and specific star formation rate (sSFR), such that galaxies with a high sSFR tend to have relatively metal poor centres, a result which is strengthened when combined with data sets from the literature. This result appears to explain the discrepancies reported between different high-redshift studies and varying claims for evolution. From a galaxy evolution perspective, the trend we see would mean that a galaxy's sSFR is governed by the amount of metal-poor gas that can be funnelled into its core, triggered either by merging or through efficient accretion. In fact, merging may play a significant role as it is the starburst galaxies at all epochs, which have the more positive metallicity gradients. Our results may help to explain the origin of the fundamental metallicity relation, in which galaxies at a fixed mass are observed to have lower metallicities at higher star formation rates, especially if the metallicity is measured in an aperture encompassing only the central regions of the galaxy. Finally, we note that this study demonstrates the power of KMOS as an efficient instrument for large-scale resolved galaxy surveys."}],"date_updated":"2022-08-19T08:27:25Z"},{"oa_version":"Preprint","month":"05","type":"journal_article","abstract":[{"lang":"eng","text":"Candidate galaxies at redshifts of z ∼ 10 are now being found in extremely deep surveys, probing very small areas. As a consequence, candidates are very faint, making spectroscopic confirmation practically impossible. In order to overcome such limitations, we have undertaken the CF-HiZELS survey, which is a large-area, medium-depth near-infrared narrow-band survey targeted at z = 8.8 Lyman α (Lyα) emitters (LAEs) and covering 10 deg2 in part of the SSA22 field with the Canada–France–Hawaii Telescope (CFHT). We surveyed a comoving volume of 4.7 × 106 Mpc3 to a Lyα luminosity limit of 6.3 × 1043舁erg舁s−1. We look for Lyα candidates by applying the following criteria: (i) clear emission-line source, (ii) no optical detections (ugriz from CFHTLS), (iii) no visible detection in the optical stack (ugriz > 27), (iv) visually checked reliable NBJ and J detections and (v) J − K ≤ 0. We compute photometric redshifts and remove a significant amount of dusty lower redshift line-emitters at z ∼ 1.4 or 2.2. A total of 13 Lyα candidates were found, of which two are marked as strong candidates, but the majority have very weak constraints on their spectral energy distributions. Using follow-up observations with SINFONI/VLT, we are able to exclude the most robust candidates as LAEs. We put a strong constraint on the Lyα luminosity function at z ∼ 9 and make realistic predictions for ongoing and future surveys. Our results show that surveys for the highest redshift LAEs are susceptible of multiple contaminations and that spectroscopic follow-up is absolutely necessary."}],"date_updated":"2022-08-19T08:30:30Z","page":"2375-2387","date_created":"2022-07-14T12:33:24Z","volume":440,"year":"2014","acknowledgement":"We thank the anonymous referee for the comments and suggestions which improved both the quality and clarity of this work. DS acknowledges financial support from the Netherlands Organisation for Scientific Research (NWO) through a Veni fellowship. IRS acknowledges support from STFC (ST/I001573/1), a Leverhulme Fellowship, the ERC Advanced Investigator programme DUSTYGAL 321334 and a Royal Society/Wolfson Merit Award. PNB acknowledges support from the Leverhulme Trust. JWK acknowledges the support from the Creative Research Initiative Program, no. 2008- 0060544, of the National Research Foundation of Korea (NRF) funded by the Korean government (MSIP). JPUF and BMJ acknowledge support from the ERC-StG grant EGGS-278202. The Dark Cosmology Centre is funded by the Danish National Research Foundation. This work is based in part on data obtained as part of the UKIRT Infrared Deep Sky Survey. Based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/IRFU, at the Canada–France–Hawaii Telescope (CFHT) which is operated by the National Research Council (NRC) of Canada, the Institut National des Science de l’Univers of the Centre National de la Recherche Scientifique (CNRS) of France and the University of Hawaii. This work is based in part on data products produced at Terapix available at the Canadian Astronomy Data Centre as part of the Canada-France-Hawaii Telescope Legacy Survey, a collaborative project of NRC and CNRS. This work was only possible due to OPTICON/FP7 and the access that it granted to the CFHT telescope. The authors also wish to acknowledge the CFHTLS and UKIDSS surveys for their excellent legacy and complementary value – without such high-quality data sets, this research would not have been possible.","_id":"11583","publication_status":"published","oa":1,"main_file_link":[{"url":"https://arxiv.org/abs/1402.6697","open_access":"1"}],"date_published":"2014-05-21T00:00:00Z","external_id":{"arxiv":["1402.6697"]},"status":"public","citation":{"ama":"Matthee JJ, Sobral D, Swinbank AM, et al. A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: Strong constraints on the luminosity function and implications for other surveys. <i>Monthly Notices of the Royal Astronomical Society</i>. 2014;440(3):2375-2387. doi:<a href=\"https://doi.org/10.1093/mnras/stu392\">10.1093/mnras/stu392</a>","apa":"Matthee, J. J., Sobral, D., Swinbank, A. M., Smail, I., Best, P. N., Kim, J.-W., … Fynbo, J. (2014). A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: Strong constraints on the luminosity function and implications for other surveys. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/stu392\">https://doi.org/10.1093/mnras/stu392</a>","mla":"Matthee, Jorryt J., et al. “A 10 Deg2 Lyman α Survey at Z=8.8 with Spectroscopic Follow-up: Strong Constraints on the Luminosity Function and Implications for Other Surveys.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 440, no. 3, Oxford University Press, 2014, pp. 2375–87, doi:<a href=\"https://doi.org/10.1093/mnras/stu392\">10.1093/mnras/stu392</a>.","ista":"Matthee JJ, Sobral D, Swinbank AM, Smail I, Best PN, Kim J-W, Franx M, Milvang-Jensen B, Fynbo J. 2014. A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: Strong constraints on the luminosity function and implications for other surveys. Monthly Notices of the Royal Astronomical Society. 440(3), 2375–2387.","chicago":"Matthee, Jorryt J, David Sobral, A. M. Swinbank, Ian Smail, P. N. Best, Jae-Woo Kim, Marijn Franx, Bo Milvang-Jensen, and Johan Fynbo. “A 10 Deg2 Lyman α Survey at Z=8.8 with Spectroscopic Follow-up: Strong Constraints on the Luminosity Function and Implications for Other Surveys.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2014. <a href=\"https://doi.org/10.1093/mnras/stu392\">https://doi.org/10.1093/mnras/stu392</a>.","ieee":"J. J. Matthee <i>et al.</i>, “A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: Strong constraints on the luminosity function and implications for other surveys,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 440, no. 3. Oxford University Press, pp. 2375–2387, 2014.","short":"J.J. Matthee, D. Sobral, A.M. Swinbank, I. Smail, P.N. Best, J.-W. Kim, M. Franx, B. Milvang-Jensen, J. Fynbo, Monthly Notices of the Royal Astronomical Society 440 (2014) 2375–2387."},"extern":"1","intvolume":"       440","day":"21","author":[{"first_name":"Jorryt J","last_name":"Matthee","orcid":"0000-0003-2871-127X","id":"7439a258-f3c0-11ec-9501-9df22fe06720","full_name":"Matthee, Jorryt J"},{"first_name":"David","last_name":"Sobral","full_name":"Sobral, David"},{"full_name":"Swinbank, A. M.","last_name":"Swinbank","first_name":"A. M."},{"full_name":"Smail, Ian","first_name":"Ian","last_name":"Smail"},{"first_name":"P. N.","last_name":"Best","full_name":"Best, P. N."},{"first_name":"Jae-Woo","last_name":"Kim","full_name":"Kim, Jae-Woo"},{"last_name":"Franx","first_name":"Marijn","full_name":"Franx, Marijn"},{"last_name":"Milvang-Jensen","first_name":"Bo","full_name":"Milvang-Jensen, Bo"},{"first_name":"Johan","last_name":"Fynbo","full_name":"Fynbo, Johan"}],"arxiv":1,"title":"A 10 deg2 Lyman α survey at z=8.8 with spectroscopic follow-up: Strong constraints on the luminosity function and implications for other surveys","publisher":"Oxford University Press","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","article_processing_charge":"No","scopus_import":"1","publication":"Monthly Notices of the Royal Astronomical Society","publication_identifier":{"eissn":["1365-2966"],"issn":["0035-8711"]},"quality_controlled":"1","doi":"10.1093/mnras/stu392","issue":"3","language":[{"iso":"eng"}],"keyword":["Space and Planetary Science","Astronomy and Astrophysics","galaxies: evolution","galaxies: high-redshift","cosmology: observations","dark ages","reionization","first stars"]},{"article_number":"6675864","title":"Magnetic properties of hot-pressed FeSb2","author":[{"first_name":"Mani","last_name":"Pokharel","full_name":"Pokharel, Mani"},{"full_name":"Zhao, Huaizhou","first_name":"Huaizhou","last_name":"Zhao"},{"full_name":"Modic, Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","first_name":"Kimberly A","last_name":"Modic"},{"first_name":"Zhifeng","last_name":"Ren","full_name":"Ren, Zhifeng"},{"first_name":"Cyril","last_name":"Opeil","full_name":"Opeil, Cyril"}],"day":"01","publication":"IEEE Transactions on Magnetics","article_type":"original","scopus_import":"1","article_processing_charge":"No","publisher":"Institute of Electrical and Electronics Engineers","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","doi":"10.1109/TMAG.2013.2292607","quality_controlled":"1","publication_identifier":{"eissn":["1941-0069"],"issn":["0018-9464"]},"issue":"5","language":[{"iso":"eng"}],"volume":50,"date_created":"2022-08-08T08:26:02Z","oa_version":"None","month":"05","type":"journal_article","date_updated":"2022-08-11T09:51:22Z","abstract":[{"lang":"eng","text":"We report on the magnetic properties of a hot-pressed FeSb 2 sample. We find a significant increase in the magnetic susceptibility in our sample when compared with the values previously reported for the polycrystalline sample. The pronounced Curie tail at low temperature corresponds to 0.2% of Fe 2+ impurities per mole. In the intrinsic conductivity region, the susceptibility due to free carriers shows thermally activated behavior and is consistent with the data reported for single crystal FeSb 2 . Based on our data and analysis, while the enhanced magnetic susceptibility in our sample comes mainly from a small amount of unreacted Fe, the contribution from the enhanced carrier density due to lattice and strain defects arising from the ball milling process is also significant. Existence of an unreacted Fe phase is evidenced by small coercivity values of ~100 observed at 50 and 300 K."}],"_id":"11750","year":"2014","date_published":"2014-05-01T00:00:00Z","publication_status":"published","intvolume":"        50","extern":"1","citation":{"short":"M. Pokharel, H. Zhao, K.A. Modic, Z. Ren, C. Opeil, IEEE Transactions on Magnetics 50 (2014).","chicago":"Pokharel, Mani, Huaizhou Zhao, Kimberly A Modic, Zhifeng Ren, and Cyril Opeil. “Magnetic Properties of Hot-Pressed FeSb2.” <i>IEEE Transactions on Magnetics</i>. Institute of Electrical and Electronics Engineers, 2014. <a href=\"https://doi.org/10.1109/TMAG.2013.2292607\">https://doi.org/10.1109/TMAG.2013.2292607</a>.","ieee":"M. Pokharel, H. Zhao, K. A. Modic, Z. Ren, and C. Opeil, “Magnetic properties of hot-pressed FeSb2,” <i>IEEE Transactions on Magnetics</i>, vol. 50, no. 5. Institute of Electrical and Electronics Engineers, 2014.","apa":"Pokharel, M., Zhao, H., Modic, K. A., Ren, Z., &#38; Opeil, C. (2014). Magnetic properties of hot-pressed FeSb2. <i>IEEE Transactions on Magnetics</i>. Institute of Electrical and Electronics Engineers. <a href=\"https://doi.org/10.1109/TMAG.2013.2292607\">https://doi.org/10.1109/TMAG.2013.2292607</a>","ista":"Pokharel M, Zhao H, Modic KA, Ren Z, Opeil C. 2014. Magnetic properties of hot-pressed FeSb2. IEEE Transactions on Magnetics. 50(5), 6675864.","mla":"Pokharel, Mani, et al. “Magnetic Properties of Hot-Pressed FeSb2.” <i>IEEE Transactions on Magnetics</i>, vol. 50, no. 5, 6675864, Institute of Electrical and Electronics Engineers, 2014, doi:<a href=\"https://doi.org/10.1109/TMAG.2013.2292607\">10.1109/TMAG.2013.2292607</a>.","ama":"Pokharel M, Zhao H, Modic KA, Ren Z, Opeil C. Magnetic properties of hot-pressed FeSb2. <i>IEEE Transactions on Magnetics</i>. 2014;50(5). doi:<a href=\"https://doi.org/10.1109/TMAG.2013.2292607\">10.1109/TMAG.2013.2292607</a>"},"status":"public"},{"citation":{"apa":"Charikar, M., Henzinger, M. H., &#38; Nguyễn, H. L. (2014). Online bipartite matching with decomposable weights. In <i>22nd Annual European Symposium on Algorithms</i> (Vol. 8737, pp. 260–271). Wroclaw, Poland: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-662-44777-2_22\">https://doi.org/10.1007/978-3-662-44777-2_22</a>","ista":"Charikar M, Henzinger MH, Nguyễn HL. 2014. Online bipartite matching with decomposable weights. 22nd Annual European Symposium on Algorithms. ESA: Annual European Symposium on Algorithms, LNCS, vol. 8737, 260–271.","mla":"Charikar, Moses, et al. “Online Bipartite Matching with Decomposable Weights.” <i>22nd Annual European Symposium on Algorithms</i>, vol. 8737, Springer Nature, 2014, pp. 260–71, doi:<a href=\"https://doi.org/10.1007/978-3-662-44777-2_22\">10.1007/978-3-662-44777-2_22</a>.","ama":"Charikar M, Henzinger MH, Nguyễn HL. Online bipartite matching with decomposable weights. In: <i>22nd Annual European Symposium on Algorithms</i>. Vol 8737. Springer Nature; 2014:260-271. doi:<a href=\"https://doi.org/10.1007/978-3-662-44777-2_22\">10.1007/978-3-662-44777-2_22</a>","short":"M. Charikar, M.H. Henzinger, H.L. Nguyễn, in:, 22nd Annual European Symposium on Algorithms, Springer Nature, 2014, pp. 260–271.","chicago":"Charikar, Moses, Monika H Henzinger, and Huy L. Nguyễn. “Online Bipartite Matching with Decomposable Weights.” In <i>22nd Annual European Symposium on Algorithms</i>, 8737:260–71. Springer Nature, 2014. <a href=\"https://doi.org/10.1007/978-3-662-44777-2_22\">https://doi.org/10.1007/978-3-662-44777-2_22</a>.","ieee":"M. Charikar, M. H. Henzinger, and H. L. Nguyễn, “Online bipartite matching with decomposable weights,” in <i>22nd Annual European Symposium on Algorithms</i>, Wroclaw, Poland, 2014, vol. 8737, pp. 260–271."},"extern":"1","intvolume":"      8737","external_id":{"arxiv":["1409.2139"]},"status":"public","alternative_title":["LNCS"],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1409.2139"}],"date_published":"2014-09-01T00:00:00Z","publication_status":"published","oa":1,"_id":"11789","year":"2014","date_created":"2022-08-11T10:41:47Z","volume":8737,"date_updated":"2023-02-13T11:16:24Z","abstract":[{"text":"We study a weighted online bipartite matching problem: G(V 1, V 2, E) is a weighted bipartite graph where V 1 is known beforehand and the vertices of V 2 arrive online. The goal is to match vertices of V 2 as they arrive to vertices in V 1, so as to maximize the sum of weights of edges in the matching. If assignments to V 1 cannot be changed, no bounded competitive ratio is achievable. We study the weighted online matching problem with free disposal, where vertices in V 1 can be assigned multiple times, but only get credit for the maximum weight edge assigned to them over the course of the algorithm. For this problem, the greedy algorithm is 0.5-competitive and determining whether a better competitive ratio is achievable is a well known open problem.\r\n\r\nWe identify an interesting special case where the edge weights are decomposable as the product of two factors, one corresponding to each end point of the edge. This is analogous to the well studied related machines model in the scheduling literature, although the objective functions are different. For this case of decomposable edge weights, we design a 0.5664 competitive randomized algorithm in complete bipartite graphs. We show that such instances with decomposable weights are non-trivial by establishing upper bounds of 0.618 for deterministic and 0.8 for randomized algorithms.\r\n\r\nA tight competitive ratio of 1 − 1/e ≈ 0.632 was known previously for both the 0-1 case as well as the case where edge weights depend on the offline vertices only, but for these cases, reassignments cannot change the quality of the solution. Beating 0.5 for weighted matching where reassignments are necessary has been a significant challenge. We thus give the first online algorithm with competitive ratio strictly better than 0.5 for a non-trivial case of weighted matching with free disposal.","lang":"eng"}],"type":"conference","month":"09","oa_version":"Preprint","page":"260 - 271","language":[{"iso":"eng"}],"conference":{"end_date":"2014-09-10","name":"ESA: Annual European Symposium on Algorithms","location":"Wroclaw, Poland","start_date":"2014-09-08"},"quality_controlled":"1","doi":"10.1007/978-3-662-44777-2_22","publication_identifier":{"issn":["0302-9743"],"isbn":["978-366244776-5"]},"article_processing_charge":"No","scopus_import":"1","publication":"22nd Annual European Symposium on Algorithms","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"Springer Nature","title":"Online bipartite matching with decomposable weights","arxiv":1,"day":"01","author":[{"last_name":"Charikar","first_name":"Moses","full_name":"Charikar, Moses"},{"full_name":"Henzinger, Monika H","orcid":"0000-0002-5008-6530","id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H","last_name":"Henzinger"},{"first_name":"Huy L.","last_name":"Nguyễn","full_name":"Nguyễn, Huy L."}]},{"publication_identifier":{"issn":["0302-9743"]},"publication_status":"published","quality_controlled":"1","doi":"10.1007/978-3-319-13129-0_4","date_published":"2014-12-01T00:00:00Z","status":"public","alternative_title":["LNCS"],"citation":{"ieee":"L. Cigler, W. Dvořák, M. H. Henzinger, and M. Starnberger, “Limiting price discrimination when selling products with positive network externalities,” in <i>10th International Conference of Web and Internet Economics</i>, Beijing, China, 2014, vol. 8877, pp. 44–57.","chicago":"Cigler, Luděk, Wolfgang Dvořák, Monika H Henzinger, and Martin Starnberger. “Limiting Price Discrimination When Selling Products with Positive Network Externalities.” In <i>10th International Conference of Web and Internet Economics</i>, 8877:44–57. Springer Nature, 2014. <a href=\"https://doi.org/10.1007/978-3-319-13129-0_4\">https://doi.org/10.1007/978-3-319-13129-0_4</a>.","short":"L. Cigler, W. Dvořák, M.H. Henzinger, M. Starnberger, in:, 10th International Conference of Web and Internet Economics, Springer Nature, 2014, pp. 44–57.","ama":"Cigler L, Dvořák W, Henzinger MH, Starnberger M. Limiting price discrimination when selling products with positive network externalities. In: <i>10th International Conference of Web and Internet Economics</i>. Vol 8877. Springer Nature; 2014:44-57. doi:<a href=\"https://doi.org/10.1007/978-3-319-13129-0_4\">10.1007/978-3-319-13129-0_4</a>","mla":"Cigler, Luděk, et al. “Limiting Price Discrimination When Selling Products with Positive Network Externalities.” <i>10th International Conference of Web and Internet Economics</i>, vol. 8877, Springer Nature, 2014, pp. 44–57, doi:<a href=\"https://doi.org/10.1007/978-3-319-13129-0_4\">10.1007/978-3-319-13129-0_4</a>.","ista":"Cigler L, Dvořák W, Henzinger MH, Starnberger M. 2014. Limiting price discrimination when selling products with positive network externalities. 10th International Conference of Web and Internet Economics. WINE: International Conference on Web and Internet Economics, LNCS, vol. 8877, 44–57.","apa":"Cigler, L., Dvořák, W., Henzinger, M. H., &#38; Starnberger, M. (2014). Limiting price discrimination when selling products with positive network externalities. In <i>10th International Conference of Web and Internet Economics</i> (Vol. 8877, pp. 44–57). Beijing, China: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-319-13129-0_4\">https://doi.org/10.1007/978-3-319-13129-0_4</a>"},"language":[{"iso":"eng"}],"conference":{"end_date":"2014-12-17","location":"Beijing, China","name":"WINE: International Conference on Web and Internet Economics","start_date":"2014-12-14"},"intvolume":"      8877","extern":"1","month":"12","oa_version":"None","type":"conference","day":"01","abstract":[{"lang":"eng","text":"Assume a seller wants to sell a digital product in a social network where a buyer’s valuation of the item has positive network externalities from her neighbors that already have the item. The goal of the seller is to maximize his revenue. Previous work on this problem [7] studies the case where clients are offered the item in sequence and have to pay personalized prices. This is highly infeasible in large scale networks such as the Facebook graph: (1) Offering items to the clients one after the other consumes a large amount of time, and (2) price-discrimination of clients could appear unfair to them and result in negative client reaction or could conflict with legal requirements.\r\n\r\nWe study a setting dealing with these issues. Specifically, the item is offered in parallel to multiple clients at the same time and at the same price. This is called a round. We show that with O(logn) rounds, where n is the number of clients, a constant factor of the revenue with price discrimination can be achieved and that this is not possible with o(logn) rounds. Moreover we show that it is APX-hard to maximize the revenue and we give constant factor approximation algorithms for various further settings of limited price discrimination."}],"date_updated":"2023-02-13T11:18:30Z","author":[{"last_name":"Cigler","first_name":"Luděk","full_name":"Cigler, Luděk"},{"first_name":"Wolfgang","last_name":"Dvořák","full_name":"Dvořák, Wolfgang"},{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","orcid":"0000-0002-5008-6530","full_name":"Henzinger, Monika H","first_name":"Monika H","last_name":"Henzinger"},{"full_name":"Starnberger, Martin","first_name":"Martin","last_name":"Starnberger"}],"page":"44 - 57","date_created":"2022-08-11T10:58:44Z","title":"Limiting price discrimination when selling products with positive network externalities","volume":8877,"year":"2014","publisher":"Springer Nature","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","scopus_import":"1","_id":"11790","publication":"10th International Conference of Web and Internet Economics"},{"date_created":"2020-04-30T11:41:54Z","title":"Vibrational and structural signatures of the crossover between dense glassy and sparse gel-like attractive colloidal packings","volume":90,"article_number":"062305","date_updated":"2021-01-12T08:15:24Z","abstract":[{"text":"We investigate the vibrational modes of quasi-two-dimensional disordered colloidal packings of hard colloidal spheres with short-range attractions as a function of packing fraction. Certain properties of the vibrational density of states (vDOS) are shown to correlate with the density and structure of the samples (i.e., in sparsely versus densely packed samples). Specifically, a crossover from dense glassy to sparse gel-like states is suggested by an excess of phonon modes at low frequency and by a variation in the slope of the vDOS with frequency at low frequency. This change in phonon mode distribution is demonstrated to arise largely from localized vibrations that involve individual and/or small clusters of particles with few local bonds. Conventional order parameters and void statistics did not exhibit obvious gel-glass signatures as a function of volume fraction. These mode behaviors and accompanying structural insights offer a potentially new set of indicators for identification of glass-gel transitions and for assignment of gel-like versus glass-like character to a disordered solid material.","lang":"eng"}],"day":"05","month":"12","type":"journal_article","oa_version":"None","author":[{"full_name":"Lohr, Matthew A.","last_name":"Lohr","first_name":"Matthew A."},{"first_name":"Tim","last_name":"Still","full_name":"Still, Tim"},{"full_name":"Ganti, Raman","first_name":"Raman","last_name":"Ganti"},{"first_name":"Matthew D.","last_name":"Gratale","full_name":"Gratale, Matthew D."},{"last_name":"Davidson","first_name":"Zoey S.","full_name":"Davidson, Zoey S."},{"last_name":"Aptowicz","first_name":"Kevin B.","full_name":"Aptowicz, Kevin B."},{"id":"EB352CD2-F68A-11E9-89C5-A432E6697425","orcid":"0000-0002-1307-5074","full_name":"Goodrich, Carl Peter","first_name":"Carl Peter","last_name":"Goodrich"},{"full_name":"Sussman, Daniel M.","first_name":"Daniel M.","last_name":"Sussman"},{"last_name":"Yodh","first_name":"A. G.","full_name":"Yodh, A. G."}],"article_processing_charge":"No","article_type":"original","publication":"Physical Review E","_id":"7768","year":"2014","publisher":"American Physical Society","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","quality_controlled":"1","date_published":"2014-12-05T00:00:00Z","doi":"10.1103/physreve.90.062305","publication_status":"published","publication_identifier":{"issn":["1539-3755","1550-2376"]},"language":[{"iso":"eng"}],"citation":{"apa":"Lohr, M. A., Still, T., Ganti, R., Gratale, M. D., Davidson, Z. S., Aptowicz, K. B., … Yodh, A. G. (2014). Vibrational and structural signatures of the crossover between dense glassy and sparse gel-like attractive colloidal packings. <i>Physical Review E</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physreve.90.062305\">https://doi.org/10.1103/physreve.90.062305</a>","ista":"Lohr MA, Still T, Ganti R, Gratale MD, Davidson ZS, Aptowicz KB, Goodrich CP, Sussman DM, Yodh AG. 2014. Vibrational and structural signatures of the crossover between dense glassy and sparse gel-like attractive colloidal packings. Physical Review E. 90(6), 062305.","mla":"Lohr, Matthew A., et al. “Vibrational and Structural Signatures of the Crossover between Dense Glassy and Sparse Gel-like Attractive Colloidal Packings.” <i>Physical Review E</i>, vol. 90, no. 6, 062305, American Physical Society, 2014, doi:<a href=\"https://doi.org/10.1103/physreve.90.062305\">10.1103/physreve.90.062305</a>.","ama":"Lohr MA, Still T, Ganti R, et al. Vibrational and structural signatures of the crossover between dense glassy and sparse gel-like attractive colloidal packings. <i>Physical Review E</i>. 2014;90(6). doi:<a href=\"https://doi.org/10.1103/physreve.90.062305\">10.1103/physreve.90.062305</a>","short":"M.A. Lohr, T. Still, R. Ganti, M.D. Gratale, Z.S. Davidson, K.B. Aptowicz, C.P. Goodrich, D.M. Sussman, A.G. Yodh, Physical Review E 90 (2014).","chicago":"Lohr, Matthew A., Tim Still, Raman Ganti, Matthew D. Gratale, Zoey S. Davidson, Kevin B. Aptowicz, Carl Peter Goodrich, Daniel M. Sussman, and A. G. Yodh. “Vibrational and Structural Signatures of the Crossover between Dense Glassy and Sparse Gel-like Attractive Colloidal Packings.” <i>Physical Review E</i>. American Physical Society, 2014. <a href=\"https://doi.org/10.1103/physreve.90.062305\">https://doi.org/10.1103/physreve.90.062305</a>.","ieee":"M. A. Lohr <i>et al.</i>, “Vibrational and structural signatures of the crossover between dense glassy and sparse gel-like attractive colloidal packings,” <i>Physical Review E</i>, vol. 90, no. 6. American Physical Society, 2014."},"issue":"6","extern":"1","intvolume":"        90","status":"public"},{"date_created":"2020-04-30T11:42:09Z","article_number":"022138","volume":90,"title":"Jamming in finite systems: Stability, anisotropy, fluctuations, and scaling","month":"08","oa_version":"None","type":"journal_article","day":"27","date_updated":"2021-01-12T08:15:24Z","abstract":[{"lang":"eng","text":"Athermal packings of soft repulsive spheres exhibit a sharp jamming transition in the thermodynamic limit. Upon further compression, various structural and mechanical properties display clean power-law behavior over many decades in pressure. As with any phase transition, the rounding of such behavior in finite systems close to the transition plays an important role in understanding the nature of the transition itself. The situation for jamming is surprisingly rich: the assumption that jammed packings are isotropic is only strictly true in the large-size limit, and finite-size has a profound effect on the very meaning of jamming. Here, we provide a comprehensive numerical study of finite-size effects in sphere packings above the jamming transition, focusing on stability as well as the scaling of the contact number and the elastic response."}],"author":[{"orcid":"0000-0002-1307-5074","id":"EB352CD2-F68A-11E9-89C5-A432E6697425","full_name":"Goodrich, Carl Peter","first_name":"Carl Peter","last_name":"Goodrich"},{"full_name":"Dagois-Bohy, Simon","last_name":"Dagois-Bohy","first_name":"Simon"},{"last_name":"Tighe","first_name":"Brian P.","full_name":"Tighe, Brian P."},{"full_name":"van Hecke, Martin","first_name":"Martin","last_name":"van Hecke"},{"full_name":"Liu, Andrea J.","last_name":"Liu","first_name":"Andrea J."},{"first_name":"Sidney R.","last_name":"Nagel","full_name":"Nagel, Sidney R."}],"article_type":"original","article_processing_charge":"No","_id":"7769","publication":"Physical Review E","year":"2014","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"American Physical Society","quality_controlled":"1","date_published":"2014-08-27T00:00:00Z","doi":"10.1103/physreve.90.022138","publication_identifier":{"issn":["1539-3755","1550-2376"]},"publication_status":"published","issue":"2","citation":{"short":"C.P. Goodrich, S. Dagois-Bohy, B.P. Tighe, M. van Hecke, A.J. Liu, S.R. Nagel, Physical Review E 90 (2014).","chicago":"Goodrich, Carl Peter, Simon Dagois-Bohy, Brian P. Tighe, Martin van Hecke, Andrea J. Liu, and Sidney R. Nagel. “Jamming in Finite Systems: Stability, Anisotropy, Fluctuations, and Scaling.” <i>Physical Review E</i>. American Physical Society, 2014. <a href=\"https://doi.org/10.1103/physreve.90.022138\">https://doi.org/10.1103/physreve.90.022138</a>.","ieee":"C. P. Goodrich, S. Dagois-Bohy, B. P. Tighe, M. van Hecke, A. J. Liu, and S. R. Nagel, “Jamming in finite systems: Stability, anisotropy, fluctuations, and scaling,” <i>Physical Review E</i>, vol. 90, no. 2. American Physical Society, 2014.","apa":"Goodrich, C. P., Dagois-Bohy, S., Tighe, B. P., van Hecke, M., Liu, A. J., &#38; Nagel, S. R. (2014). Jamming in finite systems: Stability, anisotropy, fluctuations, and scaling. <i>Physical Review E</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physreve.90.022138\">https://doi.org/10.1103/physreve.90.022138</a>","ista":"Goodrich CP, Dagois-Bohy S, Tighe BP, van Hecke M, Liu AJ, Nagel SR. 2014. Jamming in finite systems: Stability, anisotropy, fluctuations, and scaling. Physical Review E. 90(2), 022138.","mla":"Goodrich, Carl Peter, et al. “Jamming in Finite Systems: Stability, Anisotropy, Fluctuations, and Scaling.” <i>Physical Review E</i>, vol. 90, no. 2, 022138, American Physical Society, 2014, doi:<a href=\"https://doi.org/10.1103/physreve.90.022138\">10.1103/physreve.90.022138</a>.","ama":"Goodrich CP, Dagois-Bohy S, Tighe BP, van Hecke M, Liu AJ, Nagel SR. Jamming in finite systems: Stability, anisotropy, fluctuations, and scaling. <i>Physical Review E</i>. 2014;90(2). doi:<a href=\"https://doi.org/10.1103/physreve.90.022138\">10.1103/physreve.90.022138</a>"},"language":[{"iso":"eng"}],"extern":"1","intvolume":"        90","status":"public"},{"publication_identifier":{"issn":["1539-3755","1550-2376"]},"publication_status":"published","quality_controlled":"1","date_published":"2014-08-04T00:00:00Z","doi":"10.1103/physreve.90.022201","status":"public","issue":"2","citation":{"ista":"Goodrich CP, Liu AJ, Nagel SR. 2014. Contact nonlinearities and linear response in jammed particulate packings. Physical Review E. 90(2), 022201.","mla":"Goodrich, Carl Peter, et al. “Contact Nonlinearities and Linear Response in Jammed Particulate Packings.” <i>Physical Review E</i>, vol. 90, no. 2, 022201, American Physical Society, 2014, doi:<a href=\"https://doi.org/10.1103/physreve.90.022201\">10.1103/physreve.90.022201</a>.","apa":"Goodrich, C. P., Liu, A. J., &#38; Nagel, S. R. (2014). Contact nonlinearities and linear response in jammed particulate packings. <i>Physical Review E</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physreve.90.022201\">https://doi.org/10.1103/physreve.90.022201</a>","ama":"Goodrich CP, Liu AJ, Nagel SR. Contact nonlinearities and linear response in jammed particulate packings. <i>Physical Review E</i>. 2014;90(2). doi:<a href=\"https://doi.org/10.1103/physreve.90.022201\">10.1103/physreve.90.022201</a>","short":"C.P. Goodrich, A.J. Liu, S.R. Nagel, Physical Review E 90 (2014).","ieee":"C. P. Goodrich, A. J. Liu, and S. R. Nagel, “Contact nonlinearities and linear response in jammed particulate packings,” <i>Physical Review E</i>, vol. 90, no. 2. American Physical Society, 2014.","chicago":"Goodrich, Carl Peter, Andrea J. Liu, and Sidney R. Nagel. “Contact Nonlinearities and Linear Response in Jammed Particulate Packings.” <i>Physical Review E</i>. American Physical Society, 2014. <a href=\"https://doi.org/10.1103/physreve.90.022201\">https://doi.org/10.1103/physreve.90.022201</a>."},"language":[{"iso":"eng"}],"intvolume":"        90","extern":"1","month":"08","oa_version":"None","type":"journal_article","abstract":[{"lang":"eng","text":"Packings of frictionless athermal particles that interact only when they overlap experience a jamming transition as a function of packing density. Such packings provide the foundation for the theory of jamming. This theory rests on the observation that, despite the multitude of disordered configurations, the mechanical response to linear order depends only on the distance to the transition. We investigate the validity and utility of such measurements that invoke the harmonic approximation and show that, despite particles coming in and out of contact, there is a well-defined linear regime in the thermodynamic limit."}],"date_updated":"2021-01-12T08:15:25Z","day":"04","author":[{"id":"EB352CD2-F68A-11E9-89C5-A432E6697425","orcid":"0000-0002-1307-5074","full_name":"Goodrich, Carl Peter","first_name":"Carl Peter","last_name":"Goodrich"},{"last_name":"Liu","first_name":"Andrea J.","full_name":"Liu, Andrea J."},{"full_name":"Nagel, Sidney R.","first_name":"Sidney R.","last_name":"Nagel"}],"date_created":"2020-04-30T11:42:24Z","article_number":"022201","title":"Contact nonlinearities and linear response in jammed particulate packings","volume":90,"year":"2014","publisher":"American Physical Society","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","article_processing_charge":"No","_id":"7770","publication":"Physical Review E"},{"article_number":"049801 ","title":"Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic”","arxiv":1,"author":[{"first_name":"Carl Peter","last_name":"Goodrich","orcid":"0000-0002-1307-5074","id":"EB352CD2-F68A-11E9-89C5-A432E6697425","full_name":"Goodrich, Carl Peter"},{"full_name":"Liu, Andrea J.","last_name":"Liu","first_name":"Andrea J."},{"last_name":"Nagel","first_name":"Sidney R.","full_name":"Nagel, Sidney R."}],"day":"20","publication":"Physical Review Letters","article_type":"letter_note","article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"American Physical Society","doi":"10.1103/physrevlett.112.049801","publication_identifier":{"issn":["0031-9007","1079-7114"]},"issue":"4","language":[{"iso":"eng"}],"volume":112,"date_created":"2020-04-30T11:42:39Z","type":"journal_article","month":"04","oa_version":"Preprint","date_updated":"2021-01-12T08:15:26Z","abstract":[{"lang":"eng","text":"In their Letter, Schreck, Bertrand, O'Hern and Shattuck [Phys. Rev. Lett. 107, 078301 (2011)] study nonlinearities in jammed particulate systems that arise when contacts are altered. They conclude that there is \"no harmonic regime in the large system limit for all compressions\" and \"at jamming onset for any system size.\" Their argument rests on the claim that for finite-range repulsive potentials, of the form used in studies of jamming, the breaking or forming of a single contact is sufficient to destroy the linear regime. We dispute these conclusions and argue that linear response is both justified and essential for understanding the nature of the jammed solid. "}],"_id":"7771","year":"2014","date_published":"2014-04-20T00:00:00Z","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1306.1285"}],"oa":1,"publication_status":"published","extern":"1","intvolume":"       112","citation":{"short":"C.P. Goodrich, A.J. Liu, S.R. Nagel, Physical Review Letters 112 (2014).","ieee":"C. P. Goodrich, A. J. Liu, and S. R. Nagel, “Comment on ‘Repulsive contact interactions make jammed particulate systems inherently nonharmonic,’” <i>Physical Review Letters</i>, vol. 112, no. 4. American Physical Society, 2014.","chicago":"Goodrich, Carl Peter, Andrea J. Liu, and Sidney R. Nagel. “Comment on ‘Repulsive Contact Interactions Make Jammed Particulate Systems Inherently Nonharmonic.’” <i>Physical Review Letters</i>. American Physical Society, 2014. <a href=\"https://doi.org/10.1103/physrevlett.112.049801\">https://doi.org/10.1103/physrevlett.112.049801</a>.","ista":"Goodrich CP, Liu AJ, Nagel SR. 2014. Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic”. Physical Review Letters. 112(4), 049801.","mla":"Goodrich, Carl Peter, et al. “Comment on ‘Repulsive Contact Interactions Make Jammed Particulate Systems Inherently Nonharmonic.’” <i>Physical Review Letters</i>, vol. 112, no. 4, 049801, American Physical Society, 2014, doi:<a href=\"https://doi.org/10.1103/physrevlett.112.049801\">10.1103/physrevlett.112.049801</a>.","apa":"Goodrich, C. P., Liu, A. J., &#38; Nagel, S. R. (2014). Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic.” <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevlett.112.049801\">https://doi.org/10.1103/physrevlett.112.049801</a>","ama":"Goodrich CP, Liu AJ, Nagel SR. Comment on “Repulsive contact interactions make jammed particulate systems inherently nonharmonic.” <i>Physical Review Letters</i>. 2014;112(4). doi:<a href=\"https://doi.org/10.1103/physrevlett.112.049801\">10.1103/physrevlett.112.049801</a>"},"external_id":{"arxiv":["1306.1285"]},"status":"public"},{"article_number":"012301","volume":89,"title":"Phonon dispersion and elastic moduli of two-dimensional disordered colloidal packings of soft particles with frictional interactions","date_created":"2020-04-30T11:43:02Z","author":[{"first_name":"Tim","last_name":"Still","full_name":"Still, Tim"},{"id":"EB352CD2-F68A-11E9-89C5-A432E6697425","orcid":"0000-0002-1307-5074","full_name":"Goodrich, Carl Peter","first_name":"Carl Peter","last_name":"Goodrich"},{"full_name":"Chen, Ke","last_name":"Chen","first_name":"Ke"},{"first_name":"Peter J.","last_name":"Yunker","full_name":"Yunker, Peter J."},{"first_name":"Samuel","last_name":"Schoenholz","full_name":"Schoenholz, Samuel"},{"full_name":"Liu, Andrea J.","last_name":"Liu","first_name":"Andrea J."},{"first_name":"A. G.","last_name":"Yodh","full_name":"Yodh, A. G."}],"oa_version":"None","type":"journal_article","month":"01","day":"03","date_updated":"2021-01-12T08:15:26Z","abstract":[{"lang":"eng","text":"Particle tracking and displacement covariance matrix techniques are employed to investigate the phonon dispersion relations of two-dimensional colloidal glasses composed of soft, thermoresponsive microgel particles whose temperature-sensitive size permits in situ variation of particle packing fraction. Bulk, B, and shear, G, moduli of the colloidal glasses are extracted from the dispersion relations as a function of packing fraction, and variation of the ratio G/B with packing fraction is found to agree quantitatively with predictions for jammed packings of frictional soft particles. In addition, G and B individually agree with numerical predictions for frictional particles. This remarkable level of agreement enabled us to extract an energy scale for the interparticle interaction from the individual elastic constants and to derive an approximate estimate for the interparticle friction coefficient."}],"_id":"7772","publication":"Physical Review E","article_type":"original","article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"American Physical Society","year":"2014","date_published":"2014-01-03T00:00:00Z","doi":"10.1103/physreve.89.012301","quality_controlled":"1","publication_identifier":{"issn":["1539-3755","1550-2376"]},"publication_status":"published","extern":"1","intvolume":"        89","issue":"1","citation":{"short":"T. Still, C.P. Goodrich, K. Chen, P.J. Yunker, S. Schoenholz, A.J. Liu, A.G. Yodh, Physical Review E 89 (2014).","ieee":"T. Still <i>et al.</i>, “Phonon dispersion and elastic moduli of two-dimensional disordered colloidal packings of soft particles with frictional interactions,” <i>Physical Review E</i>, vol. 89, no. 1. American Physical Society, 2014.","chicago":"Still, Tim, Carl Peter Goodrich, Ke Chen, Peter J. Yunker, Samuel Schoenholz, Andrea J. Liu, and A. G. Yodh. “Phonon Dispersion and Elastic Moduli of Two-Dimensional Disordered Colloidal Packings of Soft Particles with Frictional Interactions.” <i>Physical Review E</i>. American Physical Society, 2014. <a href=\"https://doi.org/10.1103/physreve.89.012301\">https://doi.org/10.1103/physreve.89.012301</a>.","ista":"Still T, Goodrich CP, Chen K, Yunker PJ, Schoenholz S, Liu AJ, Yodh AG. 2014. Phonon dispersion and elastic moduli of two-dimensional disordered colloidal packings of soft particles with frictional interactions. Physical Review E. 89(1), 012301.","mla":"Still, Tim, et al. “Phonon Dispersion and Elastic Moduli of Two-Dimensional Disordered Colloidal Packings of Soft Particles with Frictional Interactions.” <i>Physical Review E</i>, vol. 89, no. 1, 012301, American Physical Society, 2014, doi:<a href=\"https://doi.org/10.1103/physreve.89.012301\">10.1103/physreve.89.012301</a>.","apa":"Still, T., Goodrich, C. P., Chen, K., Yunker, P. J., Schoenholz, S., Liu, A. J., &#38; Yodh, A. G. (2014). Phonon dispersion and elastic moduli of two-dimensional disordered colloidal packings of soft particles with frictional interactions. <i>Physical Review E</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physreve.89.012301\">https://doi.org/10.1103/physreve.89.012301</a>","ama":"Still T, Goodrich CP, Chen K, et al. Phonon dispersion and elastic moduli of two-dimensional disordered colloidal packings of soft particles with frictional interactions. <i>Physical Review E</i>. 2014;89(1). doi:<a href=\"https://doi.org/10.1103/physreve.89.012301\">10.1103/physreve.89.012301</a>"},"language":[{"iso":"eng"}],"status":"public"},{"date_created":"2020-04-30T11:43:29Z","title":"Solids between the mechanical extremes of order and disorder","volume":10,"oa_version":"None","month":"07","type":"journal_article","date_updated":"2021-01-12T08:15:26Z","day":"06","abstract":[{"text":"For more than a century, physicists have described real solids in terms of perturbations about perfect crystalline order1. Such an approach takes us only so far: a glass, another ubiquitous form of rigid matter, cannot be described in any meaningful sense as a defected crystal2. Is there an opposite extreme to a crystal—a solid with complete disorder—that forms an alternative starting point for understanding real materials? Here, we argue that the solid comprising particles with finite-ranged interactions at the jamming transition3,4,5 constitutes such a limit. It has been shown that the physics associated with this transition can be extended to interactions that are long ranged6. We demonstrate that jamming physics is not restricted to amorphous systems, but dominates the behaviour of solids with surprisingly high order. Just as the free-electron and tight-binding models represent two idealized cases from which to understand electronic structure1, we identify two extreme limits of mechanical behaviour. Thus, the physics of jamming can be set side by side with the physics of crystals to provide an organizing structure for understanding the mechanical properties of solids over the entire spectrum of disorder.","lang":"eng"}],"author":[{"full_name":"Goodrich, Carl Peter","orcid":"0000-0002-1307-5074","id":"EB352CD2-F68A-11E9-89C5-A432E6697425","last_name":"Goodrich","first_name":"Carl Peter"},{"first_name":"Andrea J.","last_name":"Liu","full_name":"Liu, Andrea J."},{"first_name":"Sidney R.","last_name":"Nagel","full_name":"Nagel, Sidney R."}],"page":"578-581","article_type":"original","article_processing_charge":"No","_id":"7773","publication":"Nature Physics","year":"2014","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"Springer Nature","quality_controlled":"1","date_published":"2014-07-06T00:00:00Z","doi":"10.1038/nphys3006","publication_identifier":{"issn":["1745-2473","1745-2481"]},"publication_status":"published","issue":"8","citation":{"chicago":"Goodrich, Carl Peter, Andrea J. Liu, and Sidney R. Nagel. “Solids between the Mechanical Extremes of Order and Disorder.” <i>Nature Physics</i>. Springer Nature, 2014. <a href=\"https://doi.org/10.1038/nphys3006\">https://doi.org/10.1038/nphys3006</a>.","ieee":"C. P. Goodrich, A. J. Liu, and S. R. Nagel, “Solids between the mechanical extremes of order and disorder,” <i>Nature Physics</i>, vol. 10, no. 8. Springer Nature, pp. 578–581, 2014.","short":"C.P. Goodrich, A.J. Liu, S.R. Nagel, Nature Physics 10 (2014) 578–581.","ama":"Goodrich CP, Liu AJ, Nagel SR. Solids between the mechanical extremes of order and disorder. <i>Nature Physics</i>. 2014;10(8):578-581. doi:<a href=\"https://doi.org/10.1038/nphys3006\">10.1038/nphys3006</a>","apa":"Goodrich, C. P., Liu, A. J., &#38; Nagel, S. R. (2014). Solids between the mechanical extremes of order and disorder. <i>Nature Physics</i>. Springer Nature. <a href=\"https://doi.org/10.1038/nphys3006\">https://doi.org/10.1038/nphys3006</a>","ista":"Goodrich CP, Liu AJ, Nagel SR. 2014. Solids between the mechanical extremes of order and disorder. Nature Physics. 10(8), 578–581.","mla":"Goodrich, Carl Peter, et al. “Solids between the Mechanical Extremes of Order and Disorder.” <i>Nature Physics</i>, vol. 10, no. 8, Springer Nature, 2014, pp. 578–81, doi:<a href=\"https://doi.org/10.1038/nphys3006\">10.1038/nphys3006</a>."},"language":[{"iso":"eng"}],"intvolume":"        10","extern":"1","status":"public"},{"page":"E2895-E2904","type":"journal_article","oa_version":"Published Version","month":"07","abstract":[{"lang":"eng","text":"Most excitatory inputs in the mammalian brain are made on dendritic spines, rather than on dendritic shafts. Spines compartmentalize calcium, and this biochemical isolation can underlie input-specific synaptic plasticity, providing a raison d'etre for spines. However, recent results indicate that the spine can experience a membrane potential different from that in the parent dendrite, as though the spine neck electrically isolated the spine. Here we use two-photon calcium imaging of mouse neocortical pyramidal neurons to analyze the correlation between the morphologies of spines activated under minimal synaptic stimulation and the excitatory postsynaptic potentials they generate. We find that excitatory postsynaptic potential amplitudes are inversely correlated with spine neck lengths. Furthermore, a spike timing-dependent plasticity protocol, in which two-photon glutamate uncaging over a spine is paired with postsynaptic spikes, produces rapid shrinkage of the spine neck and concomitant increases in the amplitude of the evoked spine potentials. Using numerical simulations, we explore the parameter regimes for the spine neck resistance and synaptic conductance changes necessary to explain our observations. Our data, directly correlating synaptic and morphological plasticity, imply that long-necked spines have small or negligible somatic voltage contributions, but that, upon synaptic stimulation paired with postsynaptic activity, they can shorten their necks and increase synaptic efficacy, thus changing the input/output gain of pyramidal neurons. "}],"date_updated":"2021-01-12T08:16:34Z","volume":111,"date_created":"2020-06-25T13:06:24Z","year":"2014","_id":"8021","publication_status":"published","oa":1,"date_published":"2014-07-15T00:00:00Z","main_file_link":[{"open_access":"1","url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4104910/"}],"external_id":{"pmid":["24982196"]},"status":"public","intvolume":"       111","extern":"1","citation":{"chicago":"Araya, R., Tim P Vogels, and R. Yuste. “Activity-Dependent Dendritic Spine Neck Changes Are Correlated with Synaptic Strength.” <i>Proceedings of the National Academy of Sciences</i>. Proceedings of the National Academy of Sciences, 2014. <a href=\"https://doi.org/10.1073/pnas.1321869111\">https://doi.org/10.1073/pnas.1321869111</a>.","ieee":"R. Araya, T. P. Vogels, and R. Yuste, “Activity-dependent dendritic spine neck changes are correlated with synaptic strength,” <i>Proceedings of the National Academy of Sciences</i>, vol. 111, no. 28. Proceedings of the National Academy of Sciences, pp. E2895–E2904, 2014.","short":"R. Araya, T.P. Vogels, R. Yuste, Proceedings of the National Academy of Sciences 111 (2014) E2895–E2904.","ama":"Araya R, Vogels TP, Yuste R. Activity-dependent dendritic spine neck changes are correlated with synaptic strength. <i>Proceedings of the National Academy of Sciences</i>. 2014;111(28):E2895-E2904. doi:<a href=\"https://doi.org/10.1073/pnas.1321869111\">10.1073/pnas.1321869111</a>","apa":"Araya, R., Vogels, T. P., &#38; Yuste, R. (2014). Activity-dependent dendritic spine neck changes are correlated with synaptic strength. <i>Proceedings of the National Academy of Sciences</i>. Proceedings of the National Academy of Sciences. <a href=\"https://doi.org/10.1073/pnas.1321869111\">https://doi.org/10.1073/pnas.1321869111</a>","ista":"Araya R, Vogels TP, Yuste R. 2014. Activity-dependent dendritic spine neck changes are correlated with synaptic strength. Proceedings of the National Academy of Sciences. 111(28), E2895–E2904.","mla":"Araya, R., et al. “Activity-Dependent Dendritic Spine Neck Changes Are Correlated with Synaptic Strength.” <i>Proceedings of the National Academy of Sciences</i>, vol. 111, no. 28, Proceedings of the National Academy of Sciences, 2014, pp. E2895–904, doi:<a href=\"https://doi.org/10.1073/pnas.1321869111\">10.1073/pnas.1321869111</a>."},"author":[{"full_name":"Araya, R.","first_name":"R.","last_name":"Araya"},{"full_name":"Vogels, Tim P","id":"CB6FF8D2-008F-11EA-8E08-2637E6697425","orcid":"0000-0003-3295-6181","last_name":"Vogels","first_name":"Tim P"},{"full_name":"Yuste, R.","first_name":"R.","last_name":"Yuste"}],"day":"15","title":"Activity-dependent dendritic spine neck changes are correlated with synaptic strength","publisher":"Proceedings of the National Academy of Sciences","user_id":"D865714E-FA4E-11E9-B85B-F5C5E5697425","pmid":1,"publication":"Proceedings of the National Academy of Sciences","article_type":"original","article_processing_charge":"No","publication_identifier":{"eissn":["1091-6490"],"issn":["0027-8424"]},"doi":"10.1073/pnas.1321869111","quality_controlled":"1","issue":"28","language":[{"iso":"eng"}]},{"_id":"8022","year":"2014","volume":82,"date_created":"2020-06-25T13:07:37Z","page":"1394-1406","type":"journal_article","oa_version":"Submitted Version","month":"06","date_updated":"2021-01-12T08:16:35Z","abstract":[{"lang":"eng","text":"Populations of neurons in motor cortex engage in complex transient dynamics of large amplitude during the execution of limb movements. Traditional network models with stochastically assigned synapses cannot reproduce this behavior. Here we introduce a class of cortical architectures with strong and random excitatory recurrence that is stabilized by intricate, fine-tuned inhibition, optimized from a control theory perspective. Such networks transiently amplify specific activity states and can be used to reliably execute multidimensional movement patterns. Similar to the experimental observations, these transients must be preceded by a steady-state initialization phase from which the network relaxes back into the background state by way of complex internal dynamics. In our networks, excitation and inhibition are as tightly balanced as recently reported in experiments across several brain areas, suggesting inhibitory control of complex excitatory recurrence as a generic organizational principle in cortex."}],"extern":"1","intvolume":"        82","citation":{"ama":"Hennequin G, Vogels TP, Gerstner W. Optimal control of transient dynamics in balanced networks supports generation of complex movements. <i>Neuron</i>. 2014;82(6):1394-1406. doi:<a href=\"https://doi.org/10.1016/j.neuron.2014.04.045\">10.1016/j.neuron.2014.04.045</a>","mla":"Hennequin, Guillaume, et al. “Optimal Control of Transient Dynamics in Balanced Networks Supports Generation of Complex Movements.” <i>Neuron</i>, vol. 82, no. 6, Elsevier, 2014, pp. 1394–406, doi:<a href=\"https://doi.org/10.1016/j.neuron.2014.04.045\">10.1016/j.neuron.2014.04.045</a>.","ista":"Hennequin G, Vogels TP, Gerstner W. 2014. Optimal control of transient dynamics in balanced networks supports generation of complex movements. Neuron. 82(6), 1394–1406.","apa":"Hennequin, G., Vogels, T. P., &#38; Gerstner, W. (2014). Optimal control of transient dynamics in balanced networks supports generation of complex movements. <i>Neuron</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.neuron.2014.04.045\">https://doi.org/10.1016/j.neuron.2014.04.045</a>","ieee":"G. Hennequin, T. P. Vogels, and W. Gerstner, “Optimal control of transient dynamics in balanced networks supports generation of complex movements,” <i>Neuron</i>, vol. 82, no. 6. Elsevier, pp. 1394–1406, 2014.","chicago":"Hennequin, Guillaume, Tim P Vogels, and Wulfram Gerstner. “Optimal Control of Transient Dynamics in Balanced Networks Supports Generation of Complex Movements.” <i>Neuron</i>. Elsevier, 2014. <a href=\"https://doi.org/10.1016/j.neuron.2014.04.045\">https://doi.org/10.1016/j.neuron.2014.04.045</a>.","short":"G. Hennequin, T.P. Vogels, W. Gerstner, Neuron 82 (2014) 1394–1406."},"status":"public","external_id":{"pmid":["24945778"]},"date_published":"2014-06-18T00:00:00Z","main_file_link":[{"open_access":"1","url":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6364799/"}],"publication_status":"published","oa":1,"publication":"Neuron","article_type":"original","article_processing_charge":"No","user_id":"D865714E-FA4E-11E9-B85B-F5C5E5697425","publisher":"Elsevier","pmid":1,"title":"Optimal control of transient dynamics in balanced networks supports generation of complex movements","author":[{"full_name":"Hennequin, Guillaume","last_name":"Hennequin","first_name":"Guillaume"},{"id":"CB6FF8D2-008F-11EA-8E08-2637E6697425","orcid":"0000-0003-3295-6181","full_name":"Vogels, Tim P","first_name":"Tim P","last_name":"Vogels"},{"full_name":"Gerstner, Wulfram","first_name":"Wulfram","last_name":"Gerstner"}],"day":"18","issue":"6","language":[{"iso":"eng"}],"doi":"10.1016/j.neuron.2014.04.045","quality_controlled":"1","publication_identifier":{"issn":["0896-6273"]}},{"language":[{"iso":"eng"}],"issue":"8","doi":"10.1152/jn.00629.2013","quality_controlled":"1","publication_identifier":{"eissn":["1522-1598"],"issn":["0022-3077"]},"publication":"Journal of Neurophysiology","article_processing_charge":"No","article_type":"original","tmp":{"short":"CC BY (3.0)","name":"Creative Commons Attribution 3.0 Unported (CC BY 3.0)","legal_code_url":"https://creativecommons.org/licenses/by/3.0/legalcode","image":"/images/cc_by.png"},"user_id":"D865714E-FA4E-11E9-B85B-F5C5E5697425","publisher":"American Physiological Society","pmid":1,"title":"Connection-type-specific biases make uniform random network models consistent with cortical recordings","author":[{"first_name":"Christian","last_name":"Tomm","full_name":"Tomm, Christian"},{"full_name":"Avermann, Michael","first_name":"Michael","last_name":"Avermann"},{"first_name":"Carl","last_name":"Petersen","full_name":"Petersen, Carl"},{"full_name":"Gerstner, Wulfram","first_name":"Wulfram","last_name":"Gerstner"},{"last_name":"Vogels","first_name":"Tim P","full_name":"Vogels, Tim P","orcid":"0000-0003-3295-6181","id":"CB6FF8D2-008F-11EA-8E08-2637E6697425"}],"license":"https://creativecommons.org/licenses/by/3.0/","day":"15","file":[{"date_updated":"2020-07-16T10:12:13Z","file_id":"8122","checksum":"7c06a086da6f924342650de6dc555c3f","date_created":"2020-07-16T10:12:13Z","access_level":"open_access","success":1,"file_name":"2014_JNeurophysiol_Tomm.pdf","relation":"main_file","content_type":"application/pdf","file_size":1632295,"creator":"cziletti"}],"extern":"1","intvolume":"       112","citation":{"short":"C. Tomm, M. Avermann, C. Petersen, W. Gerstner, T.P. Vogels, Journal of Neurophysiology 112 (2014) 1801–1814.","ieee":"C. Tomm, M. Avermann, C. Petersen, W. Gerstner, and T. P. Vogels, “Connection-type-specific biases make uniform random network models consistent with cortical recordings,” <i>Journal of Neurophysiology</i>, vol. 112, no. 8. American Physiological Society, pp. 1801–1814, 2014.","chicago":"Tomm, Christian, Michael Avermann, Carl Petersen, Wulfram Gerstner, and Tim P Vogels. “Connection-Type-Specific Biases Make Uniform Random Network Models Consistent with Cortical Recordings.” <i>Journal of Neurophysiology</i>. American Physiological Society, 2014. <a href=\"https://doi.org/10.1152/jn.00629.2013\">https://doi.org/10.1152/jn.00629.2013</a>.","mla":"Tomm, Christian, et al. “Connection-Type-Specific Biases Make Uniform Random Network Models Consistent with Cortical Recordings.” <i>Journal of Neurophysiology</i>, vol. 112, no. 8, American Physiological Society, 2014, pp. 1801–14, doi:<a href=\"https://doi.org/10.1152/jn.00629.2013\">10.1152/jn.00629.2013</a>.","ista":"Tomm C, Avermann M, Petersen C, Gerstner W, Vogels TP. 2014. Connection-type-specific biases make uniform random network models consistent with cortical recordings. Journal of Neurophysiology. 112(8), 1801–1814.","apa":"Tomm, C., Avermann, M., Petersen, C., Gerstner, W., &#38; Vogels, T. P. (2014). Connection-type-specific biases make uniform random network models consistent with cortical recordings. <i>Journal of Neurophysiology</i>. American Physiological Society. <a href=\"https://doi.org/10.1152/jn.00629.2013\">https://doi.org/10.1152/jn.00629.2013</a>","ama":"Tomm C, Avermann M, Petersen C, Gerstner W, Vogels TP. Connection-type-specific biases make uniform random network models consistent with cortical recordings. <i>Journal of Neurophysiology</i>. 2014;112(8):1801-1814. doi:<a href=\"https://doi.org/10.1152/jn.00629.2013\">10.1152/jn.00629.2013</a>"},"external_id":{"pmid":["24944218"]},"status":"public","ddc":["570"],"date_published":"2014-10-15T00:00:00Z","publication_status":"published","oa":1,"has_accepted_license":"1","_id":"8023","year":"2014","volume":112,"file_date_updated":"2020-07-16T10:12:13Z","date_created":"2020-06-25T13:08:30Z","page":"1801-1814","abstract":[{"text":"Uniform random sparse network architectures are ubiquitous in computational neuroscience, but the implicit hypothesis that they are a good representation of real neuronal networks has been met with skepticism. Here we used two experimental data sets, a study of triplet connectivity statistics and a data set measuring neuronal responses to channelrhodopsin stimuli, to evaluate the fidelity of thousands of model networks. Network architectures comprised three neuron types (excitatory, fast spiking, and nonfast spiking inhibitory) and were created from a set of rules that govern the statistics of the resulting connection types. In a high-dimensional parameter scan, we varied the degree distributions (i.e., how many cells each neuron connects with) and the synaptic weight correlations of synapses from or onto the same neuron. These variations converted initially uniform random and homogeneously connected networks, in which every neuron sent and received equal numbers of synapses with equal synaptic strength distributions, to highly heterogeneous networks in which the number of synapses per neuron, as well as average synaptic strength of synapses from or to a neuron were variable. By evaluating the impact of each variable on the network structure and dynamics, and their similarity to the experimental data, we could falsify the uniform random sparse connectivity hypothesis for 7 of 36 connectivity parameters, but we also confirmed the hypothesis in 8 cases. Twenty-one parameters had no substantial impact on the results of the test protocols we used.","lang":"eng"}],"date_updated":"2021-01-12T08:16:35Z","type":"journal_article","oa_version":"Published Version","month":"10"},{"day":"01","date_updated":"2023-10-17T11:12:33Z","abstract":[{"lang":"eng","text":"Many questions concerning models in quantum mechanics require a detailed analysis of the spectrum of the corresponding Hamiltonian, a linear operator on a suitable Hilbert space. Of particular relevance for an understanding of the low-temperature properties of a system is the structure of the excitation spectrum, which is the part of the spectrum close to the spectral bottom. We present recent progress on this question for bosonic many-body quantum systems with weak two-body interactions. Such system are currently of great interest, due to their experimental realization in ultra-cold atomic gases. We investigate the accuracy of the Bogoliubov approximations, which predicts that the low-energy spectrum is made up of sums of elementary excitations, with linear dispersion law at low momentum. The latter property is crucial for the superfluid behavior the system."}],"type":"conference","oa_version":"Published Version","month":"08","author":[{"id":"4AFD0470-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6781-0521","full_name":"Seiringer, Robert","first_name":"Robert","last_name":"Seiringer"}],"page":"1175-1194","date_created":"2020-06-29T07:59:35Z","title":"Structure of the excitation spectrum for many-body quantum systems","volume":3,"year":"2014","department":[{"_id":"RoSe"}],"publisher":"International Congress of Mathematicians","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","scopus_import":"1","publication":"Proceeding of the International Congress of Mathematicans","_id":"8044","oa":1,"publication_status":"published","publication_identifier":{"isbn":["9788961058063"]},"main_file_link":[{"url":"http://www.icm2014.org/en/vod/proceedings.html","open_access":"1"}],"quality_controlled":"1","date_published":"2014-08-01T00:00:00Z","status":"public","citation":{"short":"R. Seiringer, in:, Proceeding of the International Congress of Mathematicans, International Congress of Mathematicians, 2014, pp. 1175–1194.","chicago":"Seiringer, Robert. “Structure of the Excitation Spectrum for Many-Body Quantum Systems.” In <i>Proceeding of the International Congress of Mathematicans</i>, 3:1175–94. International Congress of Mathematicians, 2014.","ieee":"R. Seiringer, “Structure of the excitation spectrum for many-body quantum systems,” in <i>Proceeding of the International Congress of Mathematicans</i>, Seoul, South Korea, 2014, vol. 3, pp. 1175–1194.","apa":"Seiringer, R. (2014). Structure of the excitation spectrum for many-body quantum systems. In <i>Proceeding of the International Congress of Mathematicans</i> (Vol. 3, pp. 1175–1194). Seoul, South Korea: International Congress of Mathematicians.","ista":"Seiringer R. 2014. Structure of the excitation spectrum for many-body quantum systems. Proceeding of the International Congress of Mathematicans. ICM: International Congress of Mathematicans vol. 3, 1175–1194.","mla":"Seiringer, Robert. “Structure of the Excitation Spectrum for Many-Body Quantum Systems.” <i>Proceeding of the International Congress of Mathematicans</i>, vol. 3, International Congress of Mathematicians, 2014, pp. 1175–94.","ama":"Seiringer R. Structure of the excitation spectrum for many-body quantum systems. In: <i>Proceeding of the International Congress of Mathematicans</i>. Vol 3. International Congress of Mathematicians; 2014:1175-1194."},"language":[{"iso":"eng"}],"intvolume":"         3","conference":{"end_date":"2014-08-21","start_date":"2014-08-13","location":"Seoul, South Korea","name":"ICM: International Congress of Mathematicans"}}]