[{"doi":"10.1007/s11051-014-2297-2","oa_version":"Submitted Version","quality_controlled":"1","issue":"3","month":"02","volume":16,"acknowledgement":"The research was supported by the European Regional Development Funds (ERDF, ‘‘FEDER Programa Competitivitat de Catalunya 2007–2013’’).","year":"2014","article_type":"original","_id":"350","intvolume":"        16","publist_id":"7478","day":"18","date_updated":"2021-01-12T07:43:53Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Li, Wenhua, et al. “Colloidal Synthesis and Functional Properties of Quaternary Cu Based Semiconductors: Cu2HgGeSe4.” <i>Journal of Nanoparticle Research</i>, vol. 16, no. 3, Kluwer, 2014, doi:<a href=\"https://doi.org/10.1007/s11051-014-2297-2\">10.1007/s11051-014-2297-2</a>.","apa":"Li, W., Ibáñez, M., Cadavid, D., Zamani, R., Rubio Garcia, J., Gorsse, S., … Cabot, A. (2014). Colloidal synthesis and functional properties of quaternary Cu based semiconductors: Cu2HgGeSe4. <i>Journal of Nanoparticle Research</i>. Kluwer. <a href=\"https://doi.org/10.1007/s11051-014-2297-2\">https://doi.org/10.1007/s11051-014-2297-2</a>","short":"W. Li, M. Ibáñez, D. Cadavid, R. Zamani, J. Rubio Garcia, S. Gorsse, J. Morante, J. Arbiol, A. Cabot, Journal of Nanoparticle Research 16 (2014).","ista":"Li W, Ibáñez M, Cadavid D, Zamani R, Rubio Garcia J, Gorsse S, Morante J, Arbiol J, Cabot A. 2014. Colloidal synthesis and functional properties of quaternary Cu based semiconductors: Cu2HgGeSe4. Journal of Nanoparticle Research. 16(3).","chicago":"Li, Wenhua, Maria Ibáñez, Doris Cadavid, Reza Zamani, Javier Rubio Garcia, Stéphane Gorsse, Joan Morante, Jordi Arbiol, and Andreu Cabot. “Colloidal Synthesis and Functional Properties of Quaternary Cu Based Semiconductors: Cu2HgGeSe4.” <i>Journal of Nanoparticle Research</i>. Kluwer, 2014. <a href=\"https://doi.org/10.1007/s11051-014-2297-2\">https://doi.org/10.1007/s11051-014-2297-2</a>.","ieee":"W. Li <i>et al.</i>, “Colloidal synthesis and functional properties of quaternary Cu based semiconductors: Cu2HgGeSe4,” <i>Journal of Nanoparticle Research</i>, vol. 16, no. 3. Kluwer, 2014.","ama":"Li W, Ibáñez M, Cadavid D, et al. Colloidal synthesis and functional properties of quaternary Cu based semiconductors: Cu2HgGeSe4. <i>Journal of Nanoparticle Research</i>. 2014;16(3). doi:<a href=\"https://doi.org/10.1007/s11051-014-2297-2\">10.1007/s11051-014-2297-2</a>"},"title":"Colloidal synthesis and functional properties of quaternary Cu based semiconductors: Cu2HgGeSe4","publication":"Journal of Nanoparticle Research","article_processing_charge":"No","date_created":"2018-12-11T11:45:58Z","status":"public","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://hal.archives-ouvertes.fr/hal-00959322/","open_access":"1"}],"author":[{"first_name":"Wenhua","last_name":"Li","full_name":"Li, Wenhua"},{"orcid":"0000-0001-5013-2843","last_name":"Ibáñez","full_name":"Ibáñez, Maria","first_name":"Maria","id":"43C61214-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Doris","last_name":"Cadavid","full_name":"Cadavid, Doris"},{"last_name":"Zamani","full_name":"Zamani, Reza","first_name":"Reza"},{"last_name":"Rubio Garcia","full_name":"Rubio Garcia, Javier","first_name":"Javier"},{"full_name":"Gorsse, Stéphane","last_name":"Gorsse","first_name":"Stéphane"},{"first_name":"Joan","full_name":"Morante, Joan","last_name":"Morante"},{"full_name":"Arbiol, Jordi","last_name":"Arbiol","first_name":"Jordi"},{"full_name":"Cabot, Andreu","last_name":"Cabot","first_name":"Andreu"}],"publication_status":"published","oa":1,"date_published":"2014-02-18T00:00:00Z","abstract":[{"lang":"eng","text":"Herein, a colloidal synthetic route to produce highly monodisperse Cu2HgGeSe4 (CHGSe) nanoparticles (NPs) is presented in detail. The high yield of the developed procedure allowed the production of CHGSe NPs at the gram scale. A thorough analysis of their structural and optical properties is shown. CHGSe NPs displayed poly-tetrahedral morphology and narrow size distributions with average size in the range of 10–40 nm and size dispersions below 10 %. A 1.6 eV optical band gap was measured by mean of UV–Vis. By adjusting the cation ratio, an effective control of their electrical conductivity is achieved. The prepared NPs are used as building blocks for the production of CHGSe bulk nanostructured materials. The thermoelectric properties of CHGSe nanomaterials are studied in the temperature range from 300 to 730 K. CHGSe nanomaterials reached electrical conductivities up to 5 × 104 S m−1, Seebeck coefficients above 100 μV K−1, and thermal conductivities below 1.0 W m−1 K−1 which translated into thermoelectric figures of merit up to 0.34 at 730 K."}],"type":"journal_article","publisher":"Kluwer","extern":"1"},{"oa_version":"None","quality_controlled":"1","publication":"Journal of Materials Chemistry A","title":"The effect of the Ga content on the photocatalytic hydrogen evolution of CuIn1-xGaxS2 nanocrystals","doi":"10.1039/c4ta01315h","page":"12317 - 12322","issue":"31","article_processing_charge":"No","date_created":"2018-12-11T11:45:59Z","status":"public","volume":2,"month":"08","language":[{"iso":"eng"}],"acknowledgement":"The research was supported by the European Regional Development\r\nFunds (ERDF, “FEDER Programa Competitivitat de\r\nCatalunya 2007-2013”) and the Framework 7 program under\r\nproject SCALENANO (FP7-NMP-ENERGY-2011-284486).","year":"2014","article_type":"original","intvolume":"         2","publist_id":"7471","_id":"355","publication_status":"published","author":[{"full_name":"Yu, Xuelian","last_name":"Yu","first_name":"Xuelian"},{"first_name":"Xiaoqiang","full_name":"An, Xiaoqiang","last_name":"An"},{"first_name":"Alexey","full_name":"Shavel, Alexey","last_name":"Shavel"},{"first_name":"Maria","id":"43C61214-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5013-2843","last_name":"Ibáñez","full_name":"Ibáñez, Maria"},{"full_name":"Cabot, Andreu","last_name":"Cabot","first_name":"Andreu"}],"day":"21","date_updated":"2021-01-12T07:44:14Z","type":"journal_article","date_published":"2014-08-21T00:00:00Z","abstract":[{"text":"We report on the photocatalytic hydrogen evolution under full-arc light irradiation of CuIn1-xGaxS2 wurtzite nanocrystals in the presence of SO3 2- and S2- as sacrificial reagents. We analyzed the hydrogen generation rate as a function of the Ga content and associated it with the energy band positions. For photocatalytic water splitting, the CuInS2 bandgap is slightly too low to efficiently overcome the reaction over-potential. The presence of Ga shifts up the CuInS2 conduction band edge providing a larger driving force for photogenerated carriers to activate the water splitting reduction reaction. The larger the Ga content, the more energetically favorable the electron injection, and thus a more efficient use of the photogenerated carriers is reached. However, the band gap increase associated with the Ga incorporation reduces the concentration of photogenerated carriers available for water splitting, and consequently a lower hydrogen conversion rate is obtained for very high Ga contents. The optimum Ga concentration was experimentally found at CuIn0.3Ga0.7S2. ","lang":"eng"}],"citation":{"short":"X. Yu, X. An, A. Shavel, M. Ibáñez, A. Cabot, Journal of Materials Chemistry A 2 (2014) 12317–12322.","ista":"Yu X, An X, Shavel A, Ibáñez M, Cabot A. 2014. The effect of the Ga content on the photocatalytic hydrogen evolution of CuIn1-xGaxS2 nanocrystals. Journal of Materials Chemistry A. 2(31), 12317–12322.","chicago":"Yu, Xuelian, Xiaoqiang An, Alexey Shavel, Maria Ibáñez, and Andreu Cabot. “The Effect of the Ga Content on the Photocatalytic Hydrogen Evolution of CuIn1-XGaxS2 Nanocrystals.” <i>Journal of Materials Chemistry A</i>. Royal Society of Chemistry, 2014. <a href=\"https://doi.org/10.1039/c4ta01315h\">https://doi.org/10.1039/c4ta01315h</a>.","ama":"Yu X, An X, Shavel A, Ibáñez M, Cabot A. The effect of the Ga content on the photocatalytic hydrogen evolution of CuIn1-xGaxS2 nanocrystals. <i>Journal of Materials Chemistry A</i>. 2014;2(31):12317-12322. doi:<a href=\"https://doi.org/10.1039/c4ta01315h\">10.1039/c4ta01315h</a>","ieee":"X. Yu, X. An, A. Shavel, M. Ibáñez, and A. Cabot, “The effect of the Ga content on the photocatalytic hydrogen evolution of CuIn1-xGaxS2 nanocrystals,” <i>Journal of Materials Chemistry A</i>, vol. 2, no. 31. Royal Society of Chemistry, pp. 12317–12322, 2014.","mla":"Yu, Xuelian, et al. “The Effect of the Ga Content on the Photocatalytic Hydrogen Evolution of CuIn1-XGaxS2 Nanocrystals.” <i>Journal of Materials Chemistry A</i>, vol. 2, no. 31, Royal Society of Chemistry, 2014, pp. 12317–22, doi:<a href=\"https://doi.org/10.1039/c4ta01315h\">10.1039/c4ta01315h</a>.","apa":"Yu, X., An, X., Shavel, A., Ibáñez, M., &#38; Cabot, A. (2014). The effect of the Ga content on the photocatalytic hydrogen evolution of CuIn1-xGaxS2 nanocrystals. <i>Journal of Materials Chemistry A</i>. Royal Society of Chemistry. <a href=\"https://doi.org/10.1039/c4ta01315h\">https://doi.org/10.1039/c4ta01315h</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"Royal Society of Chemistry","extern":"1"},{"publication_status":"published","date_updated":"2021-01-12T07:44:22Z","day":"28","author":[{"first_name":"Andrew","last_name":"Fairbrother","full_name":"Fairbrother, Andrew"},{"first_name":"Victor","full_name":"Izquierdo Roca, Victor","last_name":"Izquierdo Roca"},{"full_name":"Fontané, Xavier","last_name":"Fontané","first_name":"Xavier"},{"orcid":"0000-0001-5013-2843","last_name":"Ibáñez","full_name":"Ibáñez, Maria","id":"43C61214-F248-11E8-B48F-1D18A9856A87","first_name":"Maria"},{"first_name":"Andreu","full_name":"Cabot, Andreu","last_name":"Cabot"},{"last_name":"Saucedo","full_name":"Saucedo, Edgardo","first_name":"Edgardo"},{"first_name":"Alejandro","last_name":"Pérez Rodríguez","full_name":"Pérez Rodríguez, Alejandro"}],"publisher":"Royal Society of Chemistry","extern":"1","citation":{"short":"A. Fairbrother, V. Izquierdo Roca, X. Fontané, M. Ibáñez, A. Cabot, E. Saucedo, A. Pérez Rodríguez, CrystEngComm 16 (2014) 4120–4125.","chicago":"Fairbrother, Andrew, Victor Izquierdo Roca, Xavier Fontané, Maria Ibáñez, Andreu Cabot, Edgardo Saucedo, and Alejandro Pérez Rodríguez. “ZnS Grain Size Effects on Near-Resonant Raman Scattering: Optical Non-Destructive Grain Size Estimation.” <i>CrystEngComm</i>. Royal Society of Chemistry, 2014. <a href=\"https://doi.org/10.1039/c3ce42578a\">https://doi.org/10.1039/c3ce42578a</a>.","ama":"Fairbrother A, Izquierdo Roca V, Fontané X, et al. ZnS grain size effects on near-resonant Raman scattering: Optical non-destructive grain size estimation. <i>CrystEngComm</i>. 2014;16(20):4120-4125. doi:<a href=\"https://doi.org/10.1039/c3ce42578a\">10.1039/c3ce42578a</a>","ieee":"A. Fairbrother <i>et al.</i>, “ZnS grain size effects on near-resonant Raman scattering: Optical non-destructive grain size estimation,” <i>CrystEngComm</i>, vol. 16, no. 20. Royal Society of Chemistry, pp. 4120–4125, 2014.","ista":"Fairbrother A, Izquierdo Roca V, Fontané X, Ibáñez M, Cabot A, Saucedo E, Pérez Rodríguez A. 2014. ZnS grain size effects on near-resonant Raman scattering: Optical non-destructive grain size estimation. CrystEngComm. 16(20), 4120–4125.","mla":"Fairbrother, Andrew, et al. “ZnS Grain Size Effects on Near-Resonant Raman Scattering: Optical Non-Destructive Grain Size Estimation.” <i>CrystEngComm</i>, vol. 16, no. 20, Royal Society of Chemistry, 2014, pp. 4120–25, doi:<a href=\"https://doi.org/10.1039/c3ce42578a\">10.1039/c3ce42578a</a>.","apa":"Fairbrother, A., Izquierdo Roca, V., Fontané, X., Ibáñez, M., Cabot, A., Saucedo, E., &#38; Pérez Rodríguez, A. (2014). ZnS grain size effects on near-resonant Raman scattering: Optical non-destructive grain size estimation. <i>CrystEngComm</i>. Royal Society of Chemistry. <a href=\"https://doi.org/10.1039/c3ce42578a\">https://doi.org/10.1039/c3ce42578a</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","abstract":[{"lang":"eng","text":"Near-resonant Raman scattering measurements of zinc sulfide nanoparticles and thin films have been made and correlated to grain and particle size, respectively, using a 325 nm wavelength excitation source. The area ratios between the first, second, and third order peaks of ZnS identified as the T 2(LO) mode decrease with increasing ZnS grain size. This is an effect attributed to changes in the bandgap energy from quantum confinement due to the varying grain size between the films/particles, as noted by a shift in the room temperature photoluminescence emission corresponding to the free exciton emission energy. While Raman scattering spectroscopy is typically limited to identification of phases and their crystalline properties, it is possible to attain more than such straightforward information by calibrating the spectral features to variations between sets of samples. These results open the possibility of making a quantitative grain size estimation in ZnS thin films and nanostructures, as well as in other material systems where ZnS may be expected as a secondary phase, such as Cu2ZnSnS4. Additionally, more commonly used excitation wavelengths for Raman scattering, such as 514 and 532 nm, are shown to be of limited use in characterizing ZnS thin films due to the extremely low Raman scattering efficiency of ZnS in films with sub-micron thicknesses. "}],"type":"journal_article","date_published":"2014-05-28T00:00:00Z","year":"2014","article_type":"original","publist_id":"7473","intvolume":"        16","_id":"357","volume":16,"month":"05","language":[{"iso":"eng"}],"acknowledgement":"This research was supported by the People Programme\r\n(Marie Curie Actions) of the European Union's Seventh Framework\r\nProgramme under REA grant agreement number 269167\r\n(PVICOKEST) and the Spanish Ministerio de Economía y\r\nCompetividad (MINECO) under KEST-PV (ref. ENE2010-\r\n121541-C03-01/02). Authors from IREC belong to the M-2E\r\n(Electronic Materials for Energy) Consolidated Research\r\nGroup and the XaRMAE Network of Excellence on Materials\r\nfor Energy of the “Generalitat de Catalunya”. A. Fairbrother\r\nthanks the MINECO for support via the FPU program\r\n(FPU12/05508), V. Izquierdo for the Juan de la Cierva program\r\n(JCI-2011-10782), and E. Saucedo for the Ramón y Cajal\r\nprogram (RYC-2011-09212).","quality_controlled":"1","publication":"CrystEngComm","oa_version":"None","title":"ZnS grain size effects on near-resonant Raman scattering: Optical non-destructive grain size estimation","doi":"10.1039/c3ce42578a","issue":"20","page":"4120 - 4125","status":"public","date_created":"2018-12-11T11:46:00Z","article_processing_charge":"No"},{"month":"03","volume":1,"acknowledgement":"The Spanish Ministry of Science and Innovation (Project ENE2010–15381) and the CSIC (Project 201080E116) are acknowledged for financial support.","language":[{"iso":"eng"}],"title":"In situ study of ethanol electrooxidation on monodispersed Pt inf 3 inf Sn nanoparticles","doi":"10.1002/celc.201300254","oa_version":"None","quality_controlled":"1","publication":"ChemElectroChem","article_processing_charge":"No","date_created":"2018-12-11T11:46:00Z","status":"public","page":"885 - 895","issue":"5","author":[{"last_name":"Herranz","full_name":"Herranz, Tirma","first_name":"Tirma"},{"first_name":"Maria","id":"43C61214-F248-11E8-B48F-1D18A9856A87","full_name":"Ibáñez, Maria","last_name":"Ibáñez","orcid":"0000-0001-5013-2843"},{"first_name":"José","full_name":"Gómez De La Fuente, José","last_name":"Gómez De La Fuente"},{"full_name":"Pérez Alonso, Francisco","last_name":"Pérez Alonso","first_name":"Francisco"},{"full_name":"Peña, Miguel","last_name":"Peña","first_name":"Miguel"},{"full_name":"Cabot, Andreu","last_name":"Cabot","first_name":"Andreu"},{"first_name":"Sergio","full_name":"Rojas, Sergio","last_name":"Rojas"}],"date_updated":"2021-01-12T07:44:26Z","day":"03","publication_status":"published","abstract":[{"lang":"eng","text":"Monodispersed Pt3Sn nanoparticles were prepared through a mild thermal synthesis in the presence of surfactants. The performance of Pt3Sn for the electrooxidation of ethanol and adsorbed carbon monoxide (COad) in acid medium was studied by a combination of electrochemical and insitu spectroscopic methods, namely, infrared reflection absorption spectroscopy and differential electrochemical mass spectrometry (DEMS), and the results were compared to those obtained with the use of Pt black. The formation of the Pt3Sn solid solution promoted the oxidation of COad at less-positive potentials than those required for Pt black. Also, the electrooxidation of ethanol, especially at lower potentials, was more favorable with Pt3Sn, as deduced from the higher faradaic currents recorded during the ethanol oxidation reaction (EOR). However, the distribution of products as deduced by DEMS analysis suggested that the formation of C1 products, CO2 inclusive, is less significant on Pt3Sn than on Pt. In fact, the higher faradaic current recorded with the former catalyst can be attributed to the greater amounts of acetaldehyde and acetic acid formed. After the EOR, the surface of both Pt and Pt3Sn remained covered by ethanol adsorbates. Whereas C2 fragments were the main adsorbates at the surface of Pt3Sn after the EOR, both C1 and C2 species remained adsorbed at Pt black."}],"date_published":"2014-03-03T00:00:00Z","type":"journal_article","citation":{"ieee":"T. Herranz <i>et al.</i>, “In situ study of ethanol electrooxidation on monodispersed Pt inf 3 inf Sn nanoparticles,” <i>ChemElectroChem</i>, vol. 1, no. 5. Wiley-Blackwell, pp. 885–895, 2014.","chicago":"Herranz, Tirma, Maria Ibáñez, José Gómez De La Fuente, Francisco Pérez Alonso, Miguel Peña, Andreu Cabot, and Sergio Rojas. “In Situ Study of Ethanol Electrooxidation on Monodispersed Pt Inf 3 Inf Sn Nanoparticles.” <i>ChemElectroChem</i>. Wiley-Blackwell, 2014. <a href=\"https://doi.org/10.1002/celc.201300254\">https://doi.org/10.1002/celc.201300254</a>.","ista":"Herranz T, Ibáñez M, Gómez De La Fuente J, Pérez Alonso F, Peña M, Cabot A, Rojas S. 2014. In situ study of ethanol electrooxidation on monodispersed Pt inf 3 inf Sn nanoparticles. ChemElectroChem. 1(5), 885–895.","ama":"Herranz T, Ibáñez M, Gómez De La Fuente J, et al. In situ study of ethanol electrooxidation on monodispersed Pt inf 3 inf Sn nanoparticles. <i>ChemElectroChem</i>. 2014;1(5):885-895. doi:<a href=\"https://doi.org/10.1002/celc.201300254\">10.1002/celc.201300254</a>","short":"T. Herranz, M. Ibáñez, J. Gómez De La Fuente, F. Pérez Alonso, M. Peña, A. Cabot, S. Rojas, ChemElectroChem 1 (2014) 885–895.","apa":"Herranz, T., Ibáñez, M., Gómez De La Fuente, J., Pérez Alonso, F., Peña, M., Cabot, A., &#38; Rojas, S. (2014). In situ study of ethanol electrooxidation on monodispersed Pt inf 3 inf Sn nanoparticles. <i>ChemElectroChem</i>. Wiley-Blackwell. <a href=\"https://doi.org/10.1002/celc.201300254\">https://doi.org/10.1002/celc.201300254</a>","mla":"Herranz, Tirma, et al. “In Situ Study of Ethanol Electrooxidation on Monodispersed Pt Inf 3 Inf Sn Nanoparticles.” <i>ChemElectroChem</i>, vol. 1, no. 5, Wiley-Blackwell, 2014, pp. 885–95, doi:<a href=\"https://doi.org/10.1002/celc.201300254\">10.1002/celc.201300254</a>."},"extern":"1","publisher":"Wiley-Blackwell","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","year":"2014","_id":"358","intvolume":"         1","publist_id":"7474"},{"month":"03","volume":8,"acknowledgement":"The research leading to these results has received funding from the European Union Seventh Framework Programme under grant agreement 312483-ESTEEM2 (Integrated Infrastructure InitiativeI3) for using advance electron microscopes at ER-C Jülich. J.A. acknowledges the funding from the Spanish MICINN project MAT2010-15138 (COPEON) and Generalitat de Catalunya 2009 SGR 770. R.R.Z. acknowledges the former. The authors would also like to thank the TEM facilities in Serveis Cientificotecnics from Universitat de Barcelona. N.G.-C. acknowledges the Spanish MECD for her Ph.D. grant in the FPU program. JR and RZ acknowledge funding from MULTICAT and NANOENESTO projects.","language":[{"iso":"eng"}],"doi":"10.1021/nn405747h","title":"Polarity-driven polytypic branching in Cu-based quaternary chalcogenide nanostructures","oa_version":"None","publication":"ACS Nano","quality_controlled":"1","article_processing_charge":"No","date_created":"2018-12-11T11:46:01Z","status":"public","page":"2290 - 2301","issue":"3","author":[{"last_name":"Zamani","full_name":"Zamani, Reza","first_name":"Reza"},{"id":"43C61214-F248-11E8-B48F-1D18A9856A87","first_name":"Maria","last_name":"Ibáñez","orcid":"0000-0001-5013-2843","full_name":"Ibáñez, Maria"},{"last_name":"Luysberg","full_name":"Luysberg, Martina","first_name":"Martina"},{"last_name":"García Castelló","full_name":"García Castelló, Nuria","first_name":"Nuria"},{"first_name":"Lothar","last_name":"Houben","full_name":"Houben, Lothar"},{"first_name":"Joan","full_name":"Prades, Joan","last_name":"Prades"},{"last_name":"Grillo","full_name":"Grillo, Vincenzo","first_name":"Vincenzo"},{"first_name":"Rafal","last_name":"Dunin Borkowski","full_name":"Dunin Borkowski, Rafal"},{"first_name":"Joan","last_name":"Morante","full_name":"Morante, Joan"},{"last_name":"Cabot","full_name":"Cabot, Andreu","first_name":"Andreu"},{"last_name":"Arbiol","full_name":"Arbiol, Jordi","first_name":"Jordi"}],"day":"25","date_updated":"2021-01-12T07:44:30Z","publication_status":"published","date_published":"2014-03-25T00:00:00Z","abstract":[{"lang":"eng","text":"An appropriate way of realizing property nanoengineering in complex quaternary chalcogenide nanocrystals is presented for Cu2Cd xSnSey(CCTSe) polypods. The pivotal role of the polarity in determining morphology, growth, and the polytypic branching mechanism is demonstrated. Polarity is considered to be responsible for the formation of an initial seed that takes the form of a tetrahedron with four cation-polar facets. Size and shape confinement of the intermediate pentatetrahedral seed is also attributed to polarity, as their external facets are anion-polar. The final polypod extensions also branch out as a result of a cation-polarity-driven mechanism. Aberration-corrected scanning transmission electron microscopy is used to identify stannite cation ordering, while ab initio studies are used to show the influence of cation ordering/distortion, stoichiometry, and polytypic structural change on the electronic band structure."}],"type":"journal_article","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"apa":"Zamani, R., Ibáñez, M., Luysberg, M., García Castelló, N., Houben, L., Prades, J., … Arbiol, J. (2014). Polarity-driven polytypic branching in Cu-based quaternary chalcogenide nanostructures. <i>ACS Nano</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/nn405747h\">https://doi.org/10.1021/nn405747h</a>","mla":"Zamani, Reza, et al. “Polarity-Driven Polytypic Branching in Cu-Based Quaternary Chalcogenide Nanostructures.” <i>ACS Nano</i>, vol. 8, no. 3, American Chemical Society, 2014, pp. 2290–301, doi:<a href=\"https://doi.org/10.1021/nn405747h\">10.1021/nn405747h</a>.","ieee":"R. Zamani <i>et al.</i>, “Polarity-driven polytypic branching in Cu-based quaternary chalcogenide nanostructures,” <i>ACS Nano</i>, vol. 8, no. 3. American Chemical Society, pp. 2290–2301, 2014.","ista":"Zamani R, Ibáñez M, Luysberg M, García Castelló N, Houben L, Prades J, Grillo V, Dunin Borkowski R, Morante J, Cabot A, Arbiol J. 2014. Polarity-driven polytypic branching in Cu-based quaternary chalcogenide nanostructures. ACS Nano. 8(3), 2290–2301.","ama":"Zamani R, Ibáñez M, Luysberg M, et al. Polarity-driven polytypic branching in Cu-based quaternary chalcogenide nanostructures. <i>ACS Nano</i>. 2014;8(3):2290-2301. doi:<a href=\"https://doi.org/10.1021/nn405747h\">10.1021/nn405747h</a>","chicago":"Zamani, Reza, Maria Ibáñez, Martina Luysberg, Nuria García Castelló, Lothar Houben, Joan Prades, Vincenzo Grillo, et al. “Polarity-Driven Polytypic Branching in Cu-Based Quaternary Chalcogenide Nanostructures.” <i>ACS Nano</i>. American Chemical Society, 2014. <a href=\"https://doi.org/10.1021/nn405747h\">https://doi.org/10.1021/nn405747h</a>.","short":"R. Zamani, M. Ibáñez, M. Luysberg, N. García Castelló, L. Houben, J. Prades, V. Grillo, R. Dunin Borkowski, J. Morante, A. Cabot, J. Arbiol, ACS Nano 8 (2014) 2290–2301."},"publisher":"American Chemical Society","extern":"1","year":"2014","article_type":"original","_id":"359","intvolume":"         8","publist_id":"7475"},{"year":"2014","main_file_link":[{"open_access":"1","url":"https://idus.us.es/xmlui/handle/11441/38719"}],"publist_id":"7371","intvolume":"        41","_id":"451","oa":1,"publication_status":"published","date_updated":"2021-01-12T07:59:20Z","day":"01","author":[{"last_name":"Pilarczyk","full_name":"Pawel Pilarczyk","id":"3768D56A-F248-11E8-B48F-1D18A9856A87","first_name":"Pawel"},{"last_name":"Real","full_name":"Real, Pedro","first_name":"Pedro"}],"extern":1,"citation":{"ama":"Pilarczyk P, Real P. Computation of cubical homology, cohomology, and (co)homological operations via chain contraction. <i>Advances in Computational Mathematics</i>. 2014;41(1):253-275. doi:<a href=\"https://doi.org/10.1007/s10444-014-9356-1\">10.1007/s10444-014-9356-1</a>","ista":"Pilarczyk P, Real P. 2014. Computation of cubical homology, cohomology, and (co)homological operations via chain contraction. Advances in Computational Mathematics. 41(1), 253–275.","chicago":"Pilarczyk, Pawel, and Pedro Real. “Computation of Cubical Homology, Cohomology, and (Co)Homological Operations via Chain Contraction.” <i>Advances in Computational Mathematics</i>. Kluwer, 2014. <a href=\"https://doi.org/10.1007/s10444-014-9356-1\">https://doi.org/10.1007/s10444-014-9356-1</a>.","ieee":"P. Pilarczyk and P. Real, “Computation of cubical homology, cohomology, and (co)homological operations via chain contraction,” <i>Advances in Computational Mathematics</i>, vol. 41, no. 1. Kluwer, pp. 253–275, 2014.","short":"P. Pilarczyk, P. Real, Advances in Computational Mathematics 41 (2014) 253–275.","apa":"Pilarczyk, P., &#38; Real, P. (2014). Computation of cubical homology, cohomology, and (co)homological operations via chain contraction. <i>Advances in Computational Mathematics</i>. Kluwer. <a href=\"https://doi.org/10.1007/s10444-014-9356-1\">https://doi.org/10.1007/s10444-014-9356-1</a>","mla":"Pilarczyk, Pawel, and Pedro Real. “Computation of Cubical Homology, Cohomology, and (Co)Homological Operations via Chain Contraction.” <i>Advances in Computational Mathematics</i>, vol. 41, no. 1, Kluwer, 2014, pp. 253–75, doi:<a href=\"https://doi.org/10.1007/s10444-014-9356-1\">10.1007/s10444-014-9356-1</a>."},"publisher":"Kluwer","abstract":[{"text":"We introduce algorithms for the computation of homology, cohomology, and related operations on cubical cell complexes, using the technique based on a chain contraction from the original chain complex to a reduced one that represents its homology. This work is based on previous results for simplicial complexes, and uses Serre’s diagonalization for cubical cells. An implementation in C++ of the introduced algorithms is available at http://www.pawelpilarczyk.com/chaincon/ together with some examples. The paper is self-contained as much as possible, and is written at a very elementary level, so that basic knowledge of algebraic topology should be sufficient to follow it.","lang":"eng"}],"date_published":"2014-01-01T00:00:00Z","type":"journal_article","publication":"Advances in Computational Mathematics","quality_controlled":0,"doi":"10.1007/s10444-014-9356-1","title":"Computation of cubical homology, cohomology, and (co)homological operations via chain contraction","issue":"1","page":"253 - 275","status":"public","date_created":"2018-12-11T11:46:33Z","volume":41,"month":"01","acknowledgement":"This research was partially supported from Fundo Europeu de Desenvolvimento Regional (FEDER) through COMPETE – Programa Operacional Factores de Compe titividade (POFC) and from the Portuguese national funds through Fundacaoparaa Ciencia e a Tecnologia (FCT) in the framework of the research project FCOMP-01-0124-FEDER-010645(ref. FCT PTDC/MAT/098871/2008), as well as from the funds distributed through the European Science Foundation (ESF) Research Networking Programme on “Applied and Computational Algebraic Topology” (ACAT). P.Real was additionally supported by the Spanish Ministry of Science and Innovation, project no. MTM2009-12716. "},{"related_material":{"record":[{"relation":"dissertation_contains","id":"6383"},{"relation":"dissertation_contains","status":"public","id":"6435"}]},"department":[{"_id":"SyCr"}],"publication_status":"published","author":[{"last_name":"Stroeymeyt","full_name":"Stroeymeyt, Nathalie","first_name":"Nathalie"},{"full_name":"Casillas Perez, Barbara E","last_name":"Casillas Perez","first_name":"Barbara E","id":"351ED2AA-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0002-2193-3868","last_name":"Cremer","full_name":"Cremer, Sylvia","first_name":"Sylvia","id":"2F64EC8C-F248-11E8-B48F-1D18A9856A87"}],"scopus_import":"1","publisher":"Elsevier","type":"journal_article","abstract":[{"lang":"eng","text":"Selection for disease control is believed to have contributed to shape the organisation of insect societies — leading to interaction patterns that mitigate disease transmission risk within colonies, conferring them ‘organisational immunity’. Recent studies combining epidemiological models with social network analysis have identified general properties of interaction networks that may hinder propagation of infection within groups. These can be prophylactic and/or induced upon pathogen exposure. Here we review empirical evidence for these two types of organisational immunity in social insects and describe the individual-level behaviours that underlie it. We highlight areas requiring further investigation, and emphasise the need for tighter links between theory and empirical research and between individual-level and collective-level analyses."}],"date_published":"2014-11-01T00:00:00Z","external_id":{"isi":["000209578900002"]},"project":[{"_id":"25DC711C-B435-11E9-9278-68D0E5697425","name":"Social Vaccination in Ant Colonies: from Individual Mechanisms to Society Effects","grant_number":"243071","call_identifier":"FP7"}],"corr_author":"1","language":[{"iso":"eng"}],"publication":"Current Opinion in Insect Science","title":"Organisational immunity in social insects","page":"1 - 15","status":"public","date_created":"2018-12-11T11:55:08Z","article_processing_charge":"No","date_updated":"2026-04-05T22:31:02Z","day":"01","isi":1,"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","citation":{"mla":"Stroeymeyt, Nathalie, et al. “Organisational Immunity in Social Insects.” <i>Current Opinion in Insect Science</i>, vol. 5, no. 1, Elsevier, 2014, pp. 1–15, doi:<a href=\"https://doi.org/10.1016/j.cois.2014.09.001\">10.1016/j.cois.2014.09.001</a>.","apa":"Stroeymeyt, N., Casillas Perez, B. E., &#38; Cremer, S. (2014). Organisational immunity in social insects. <i>Current Opinion in Insect Science</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.cois.2014.09.001\">https://doi.org/10.1016/j.cois.2014.09.001</a>","short":"N. Stroeymeyt, B.E. Casillas Perez, S. Cremer, Current Opinion in Insect Science 5 (2014) 1–15.","ama":"Stroeymeyt N, Casillas Perez BE, Cremer S. Organisational immunity in social insects. <i>Current Opinion in Insect Science</i>. 2014;5(1):1-15. doi:<a href=\"https://doi.org/10.1016/j.cois.2014.09.001\">10.1016/j.cois.2014.09.001</a>","chicago":"Stroeymeyt, Nathalie, Barbara E Casillas Perez, and Sylvia Cremer. “Organisational Immunity in Social Insects.” <i>Current Opinion in Insect Science</i>. Elsevier, 2014. <a href=\"https://doi.org/10.1016/j.cois.2014.09.001\">https://doi.org/10.1016/j.cois.2014.09.001</a>.","ista":"Stroeymeyt N, Casillas Perez BE, Cremer S. 2014. Organisational immunity in social insects. Current Opinion in Insect Science. 5(1), 1–15.","ieee":"N. Stroeymeyt, B. E. Casillas Perez, and S. Cremer, “Organisational immunity in social insects,” <i>Current Opinion in Insect Science</i>, vol. 5, no. 1. Elsevier, pp. 1–15, 2014."},"year":"2014","ec_funded":1,"publist_id":"5080","intvolume":"         5","_id":"1999","volume":5,"month":"11","quality_controlled":"1","oa_version":"None","doi":"10.1016/j.cois.2014.09.001","issue":"1"},{"_id":"115","publist_id":"7939","intvolume":"        84","article_number":"025104","year":"2013","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publisher":"AIP","extern":"1","citation":{"short":"S.R. Waitukaitis, H. Jaeger, Review of Scientific Instruments 84 (2013).","ieee":"S. R. Waitukaitis and H. Jaeger, “In situ granular charge measurement by free-fall videography,” <i>Review of Scientific Instruments</i>, vol. 84, no. 2. AIP, 2013.","ama":"Waitukaitis SR, Jaeger H. In situ granular charge measurement by free-fall videography. <i>Review of Scientific Instruments</i>. 2013;84(2). doi:<a href=\"https://doi.org/10.1063/1.4789496\">10.1063/1.4789496</a>","ista":"Waitukaitis SR, Jaeger H. 2013. In situ granular charge measurement by free-fall videography. Review of Scientific Instruments. 84(2), 025104.","chicago":"Waitukaitis, Scott R, and Heinrich Jaeger. “In Situ Granular Charge Measurement by Free-Fall Videography.” <i>Review of Scientific Instruments</i>. AIP, 2013. <a href=\"https://doi.org/10.1063/1.4789496\">https://doi.org/10.1063/1.4789496</a>.","mla":"Waitukaitis, Scott R., and Heinrich Jaeger. “In Situ Granular Charge Measurement by Free-Fall Videography.” <i>Review of Scientific Instruments</i>, vol. 84, no. 2, 025104, AIP, 2013, doi:<a href=\"https://doi.org/10.1063/1.4789496\">10.1063/1.4789496</a>.","apa":"Waitukaitis, S. R., &#38; Jaeger, H. (2013). In situ granular charge measurement by free-fall videography. <i>Review of Scientific Instruments</i>. AIP. <a href=\"https://doi.org/10.1063/1.4789496\">https://doi.org/10.1063/1.4789496</a>"},"type":"journal_article","abstract":[{"lang":"eng","text":"We present the design and performance characterization of a new experimental technique for measuring individual particle charges in large ensembles of macroscopic grains. The measurement principle is qualitatively similar to that used in determining the elementary charge by Millikan in that it follows individual particle trajectories. However, by taking advantage of new technology we are able to work with macroscopic grains and achieve several orders of magnitude better resolution in charge to mass ratios. By observing freely falling grains accelerated in a horizontal electric field with a co-falling, high-speed video camera, we dramatically increase particle tracking time and measurement precision. Keeping the granular medium under vacuum, we eliminate air drag, leaving the electrostatic force as the primary source of particle accelerations in the co-moving frame. Because the technique is based on direct imaging, we can distinguish between different particle types during the experiment, opening up the possibility of studying charge transfer processes between different particle species. For the ∼300 μm diameter grains reported here, we achieve an average acceleration resolution of ∼0.008 m/s2, a force resolution of ∼500 pN, and a median charge resolution ∼6× 104 elementary charges per grain (corresponding to surface charge densities ∼1 elementary charges per μm2). The primary source of error is indeterminacy in the grain mass, but with higher resolution cameras and better optics this can be further improved. The high degree of resolution and the ability to visually identify particles of different species or sizes with direct imaging make this a powerful new tool to characterize charging processes in granular media."}],"date_published":"2013-02-07T00:00:00Z","day":"07","date_updated":"2021-01-12T06:48:39Z","author":[{"id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","first_name":"Scott R","full_name":"Waitukaitis, Scott R","last_name":"Waitukaitis","orcid":"0000-0002-2299-3176"},{"last_name":"Jaeger","full_name":"Jaeger, Heinrich","first_name":"Heinrich"}],"publication_status":"published","status":"public","date_created":"2018-12-11T11:44:42Z","issue":"2","title":"In situ granular charge measurement by free-fall videography","doi":"10.1063/1.4789496","quality_controlled":"1","publication":"Review of Scientific Instruments","oa_version":"None","acknowledgement":"This work was supported financially by the National Science Foundation (NSF) through its Materials Research Science and Engineering Center (MRSEC) program (DMR-0820054) and by the US Army Research Office through Grant No. W911NF-12-1-0182. S.R.W. acknowledges support from a University of Chicago Millikan Fellowship.","language":[{"iso":"eng"}],"month":"02","volume":84},{"publication":"The Astrophysical Journal","title":"The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS","status":"public","article_processing_charge":"No","date_created":"2022-07-07T09:14:48Z","language":[{"iso":"eng"}],"arxiv":1,"main_file_link":[{"url":"https://arxiv.org/abs/1310.3822","open_access":"1"}],"article_number":"139","external_id":{"arxiv":["1310.3822"]},"oa":1,"publication_status":"published","publication_identifier":{"eissn":["1538-4357"],"issn":["0004-637X"]},"author":[{"last_name":"Sobral","full_name":"Sobral, D.","first_name":"D."},{"first_name":"A. M.","last_name":"Swinbank","full_name":"Swinbank, A. M."},{"first_name":"J. P.","last_name":"Stott","full_name":"Stott, J. P."},{"full_name":"Matthee, Jorryt J","last_name":"Matthee","orcid":"0000-0003-2871-127X","first_name":"Jorryt J","id":"7439a258-f3c0-11ec-9501-9df22fe06720"},{"first_name":"R. G.","last_name":"Bower","full_name":"Bower, R. G."},{"first_name":"Ian","last_name":"Smail","full_name":"Smail, Ian"},{"first_name":"P.","last_name":"Best","full_name":"Best, P."},{"last_name":"Geach","full_name":"Geach, J. E.","first_name":"J. E."},{"full_name":"Sharples, R. M.","last_name":"Sharples","first_name":"R. M."}],"publisher":"IOP Publishing","extern":"1","scopus_import":"1","type":"journal_article","date_published":"2013-12-03T00:00:00Z","abstract":[{"text":"We present the spatially resolved Hα dynamics of 16 star-forming galaxies at z ∼ 0.81 using the new KMOS multi-object integral field spectrograph on the ESO Very Large Telescope. These galaxies, selected using 1.18 μm narrowband imaging from the 10 deg2 CFHT-HiZELS survey of the SA 22 hr field, are found in a ∼4 Mpc overdensity of Hα emitters and likely reside in a group/intermediate environment, but not a cluster. We confirm and identify a rich group of star-forming galaxies at z = 0.813 ± 0.003, with 13 galaxies within 1000 km s−1 of each other, and seven within a diameter of 3 Mpc. All of our galaxies are “typical” star-forming galaxies at their redshift, 0.8 ± 0.4 SFR$^*_{z = 0.8}$, spanning a range of specific star formation rates (sSFRs) of 0.2–1.1 Gyr−1 and have a median metallicity very close to solar of 12 + log(O/H) = 8.62 ± 0.06. We measure the spatially resolved Hα dynamics of the galaxies in our sample and show that 13 out of 16 galaxies can be described by rotating disks and use the data to derive inclination corrected rotation speeds of 50–275 km s−1. The fraction of disks within our sample is 75% ± 8%, consistent with previous results based on Hubble Space Telescope morphologies of Hα-selected galaxies at z ∼ 1 and confirming that disks dominate the SFR density at z ∼ 1. Our Hα galaxies are well fitted by the z ∼ 1–2 Tully–Fisher (TF) relation, confirming the evolution seen in the zero point. Apart from having, on average, higher stellar masses and lower sSFRs, our group galaxies at z = 0.81 present the same mass–metallicity and TF relation as z ∼ 1 field galaxies and are all disk galaxies.","lang":"eng"}],"quality_controlled":"1","oa_version":"Preprint","doi":"10.1088/0004-637x/779/2/139","issue":"2","volume":779,"month":"12","acknowledgement":"We thank the referee for many helpful comments and suggestions which greatly improved the clarity and quality of this work. D.S. acknowledges financial support from the Netherlands Organisation for Scientific research (NWO) through a Veni fellowship and also funding from the European Community Seventh Framework Programme (FP7/2007-2013) under grant agreement number RG226604 (OPTICON) which allowed access to CFHT time (proposals: 11BO29 & 12AO19). A.M.S. gratefully acknowledges an STFC Advanced Fellowship through grant number ST/H005234/1. I.R.S., J.P.S., and R.G.B. acknowledge support from the UK Science and Technology Facilities Council (STFC) under ST/I001573/1. I.R.S. acknowledges STFC (ST/J001422/1), the ERC Advanced Investigator program DUSTYGAL and a Royal Society/Wolfson Merit Award. P.N.B. acknowledges support from STFC. R.M.S. acknowledges support from the grant ST/1001573/1. The data presented here are based on observations with the KMOS spectrograph on the ESO/VLT under program 60.A-9460 and can be accessed through the ESO data archive. The authors also wish to acknowledge the help from Michael Hilker in preparing the KMOS observations.","article_type":"original","year":"2013","intvolume":"       779","_id":"11520","date_updated":"2022-08-18T10:43:07Z","day":"03","keyword":["Space and Planetary Science","Astronomy and Astrophysics","galaxies: evolution – galaxies","high-redshift – galaxies","starburst"],"citation":{"mla":"Sobral, D., et al. “The Dynamics of Z=0.8 H-Alpha-Selected Star-Forming Galaxies from KMOS/CF-HiZELS.” <i>The Astrophysical Journal</i>, vol. 779, no. 2, 139, IOP Publishing, 2013, doi:<a href=\"https://doi.org/10.1088/0004-637x/779/2/139\">10.1088/0004-637x/779/2/139</a>.","apa":"Sobral, D., Swinbank, A. M., Stott, J. P., Matthee, J. J., Bower, R. G., Smail, I., … Sharples, R. M. (2013). The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS. <i>The Astrophysical Journal</i>. IOP Publishing. <a href=\"https://doi.org/10.1088/0004-637x/779/2/139\">https://doi.org/10.1088/0004-637x/779/2/139</a>","short":"D. Sobral, A.M. Swinbank, J.P. Stott, J.J. Matthee, R.G. Bower, I. Smail, P. Best, J.E. Geach, R.M. Sharples, The Astrophysical Journal 779 (2013).","ista":"Sobral D, Swinbank AM, Stott JP, Matthee JJ, Bower RG, Smail I, Best P, Geach JE, Sharples RM. 2013. The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS. The Astrophysical Journal. 779(2), 139.","ama":"Sobral D, Swinbank AM, Stott JP, et al. The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS. <i>The Astrophysical Journal</i>. 2013;779(2). doi:<a href=\"https://doi.org/10.1088/0004-637x/779/2/139\">10.1088/0004-637x/779/2/139</a>","chicago":"Sobral, D., A. M. Swinbank, J. P. Stott, Jorryt J Matthee, R. G. Bower, Ian Smail, P. Best, J. E. Geach, and R. M. Sharples. “The Dynamics of Z=0.8 H-Alpha-Selected Star-Forming Galaxies from KMOS/CF-HiZELS.” <i>The Astrophysical Journal</i>. IOP Publishing, 2013. <a href=\"https://doi.org/10.1088/0004-637x/779/2/139\">https://doi.org/10.1088/0004-637x/779/2/139</a>.","ieee":"D. Sobral <i>et al.</i>, “The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS,” <i>The Astrophysical Journal</i>, vol. 779, no. 2. IOP Publishing, 2013."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"extern":"1","citation":{"apa":"Waitukaitis, S. R., Roth, L., Vitelli, V., &#38; Jaeger, H. (2013). Dynamic jamming fronts. <i>EPL</i>. Elsevier. <a href=\"https://doi.org/10.1209/0295-5075/102/44001\">https://doi.org/10.1209/0295-5075/102/44001</a>","mla":"Waitukaitis, Scott R., et al. “Dynamic Jamming Fronts.” <i>EPL</i>, vol. 102, no. 4, 44001, Elsevier, 2013, doi:<a href=\"https://doi.org/10.1209/0295-5075/102/44001\">10.1209/0295-5075/102/44001</a>.","ista":"Waitukaitis SR, Roth L, Vitelli V, Jaeger H. 2013. Dynamic jamming fronts. EPL. 102(4), 44001.","ieee":"S. R. Waitukaitis, L. Roth, V. Vitelli, and H. Jaeger, “Dynamic jamming fronts,” <i>EPL</i>, vol. 102, no. 4. Elsevier, 2013.","ama":"Waitukaitis SR, Roth L, Vitelli V, Jaeger H. Dynamic jamming fronts. <i>EPL</i>. 2013;102(4). doi:<a href=\"https://doi.org/10.1209/0295-5075/102/44001\">10.1209/0295-5075/102/44001</a>","chicago":"Waitukaitis, Scott R, Leah Roth, Vincenzo Vitelli, and Heinrich Jaeger. “Dynamic Jamming Fronts.” <i>EPL</i>. Elsevier, 2013. <a href=\"https://doi.org/10.1209/0295-5075/102/44001\">https://doi.org/10.1209/0295-5075/102/44001</a>.","short":"S.R. Waitukaitis, L. Roth, V. Vitelli, H. Jaeger, EPL 102 (2013)."},"publisher":"Elsevier","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","abstract":[{"text":"We describe a model experiment for dynamic jamming: a two-dimensional collection of initially unjammed disks that are forced into the jammed state by uniaxial compression via a rake. This leads to a stable densification front that travels ahead of the rake, leaving regions behind it jammed. Using disk conservation in conjunction with an upper limit to the packing fraction at jamming onset, we predict the front speed as a function of packing fraction and rake speed. However, we find that the jamming front has a finite width, a feature that cannot be explained by disk conservation alone. This width appears to diverge on approach to jamming, which suggests that it may be related to growing lengthscales encountered in other jamming studies.","lang":"eng"}],"type":"journal_article","date_published":"2013-05-24T00:00:00Z","publication_status":"published","day":"24","date_updated":"2021-01-12T06:48:44Z","author":[{"id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","first_name":"Scott R","full_name":"Waitukaitis, Scott R","last_name":"Waitukaitis","orcid":"0000-0002-2299-3176"},{"last_name":"Roth","full_name":"Roth, Leah","first_name":"Leah"},{"first_name":"Vincenzo","last_name":"Vitelli","full_name":"Vitelli, Vincenzo"},{"first_name":"Heinrich","last_name":"Jaeger","full_name":"Jaeger, Heinrich"}],"publist_id":"7938","intvolume":"       102","_id":"116","year":"2013","article_number":"44001","language":[{"iso":"eng"}],"acknowledgement":"This work was supported by the National Science Foundation (NSF) through its Materials Research Science and Engineering program (DMR-0820054). SRW was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award DE-FG02-03ER46088. LKR acknowledges support through the NSF Research Experience for Undergraduates program.","volume":102,"month":"05","issue":"4","status":"public","date_created":"2018-12-11T11:44:43Z","quality_controlled":"1","publication":"EPL","oa_version":"None","doi":"10.1209/0295-5075/102/44001","title":"Dynamic jamming fronts"},{"article_number":"3","abstract":[{"lang":"eng","text":"Given only the URL of a Web page, can we identify its language? In this article we examine this question. URL-based language classification is useful when the content of the Web page is not available or downloading the content is a waste of bandwidth and time.\r\nWe built URL-based language classifiers for English, German, French, Spanish, and Italian by applying a variety of algorithms and features. As algorithms we used machine learning algorithms which are widely applied for text classification and state-of-art algorithms for language identification of text. As features we used words, various sized n-grams, and custom-made features (our novel feature set). We compared our approaches with two baseline methods, namely classification by country code top-level domains and classification by IP addresses of the hosting Web servers.\r\n\r\nWe trained and tested our classifiers in a 10-fold cross-validation setup on a dataset obtained from the Open Directory Project and from querying a commercial search engine. We obtained the lowest F1-measure for English (94) and the highest F1-measure for German (98) with the best performing classifiers.\r\n\r\nWe also evaluated the performance of our methods: (i) on a set of Web pages written in Adobe Flash and (ii) as part of a language-focused crawler. In the first case, the content of the Web page is hard to extract and in the second page downloading pages of the “wrong” language constitutes a waste of bandwidth. In both settings the best classifiers have a high accuracy with an F1-measure between 95 (for English) and 98 (for Italian) for the Adobe Flash pages and a precision between 90 (for Italian) and 97 (for French) for the language-focused crawler."}],"date_published":"2013-03-01T00:00:00Z","type":"journal_article","publisher":"Association for Computing Machinery","extern":"1","scopus_import":"1","publication_status":"published","publication_identifier":{"eissn":["1559-114X"],"issn":["1559-1131"]},"author":[{"last_name":"Baykan","full_name":"Baykan, Eda","first_name":"Eda"},{"last_name":"Weber","full_name":"Weber, Ingmar","first_name":"Ingmar"},{"first_name":"Monika H","id":"540c9bbd-f2de-11ec-812d-d04a5be85630","full_name":"Henzinger, Monika H","orcid":"0000-0002-5008-6530","last_name":"Henzinger"}],"date_created":"2022-07-27T12:50:18Z","article_processing_charge":"No","status":"public","publication":"ACM Transactions on the Web","title":"A comprehensive study of techniques for URL-based web page language classification","language":[{"iso":"eng"}],"intvolume":"         7","_id":"11671","year":"2013","article_type":"original","citation":{"mla":"Baykan, Eda, et al. “A Comprehensive Study of Techniques for URL-Based Web Page Language Classification.” <i>ACM Transactions on the Web</i>, vol. 7, no. 1, 3, Association for Computing Machinery, 2013, doi:<a href=\"https://doi.org/10.1145/2435215.2435218\">10.1145/2435215.2435218</a>.","apa":"Baykan, E., Weber, I., &#38; Henzinger, M. (2013). A comprehensive study of techniques for URL-based web page language classification. <i>ACM Transactions on the Web</i>. Association for Computing Machinery. <a href=\"https://doi.org/10.1145/2435215.2435218\">https://doi.org/10.1145/2435215.2435218</a>","short":"E. Baykan, I. Weber, M. Henzinger, ACM Transactions on the Web 7 (2013).","ama":"Baykan E, Weber I, Henzinger M. A comprehensive study of techniques for URL-based web page language classification. <i>ACM Transactions on the Web</i>. 2013;7(1). doi:<a href=\"https://doi.org/10.1145/2435215.2435218\">10.1145/2435215.2435218</a>","chicago":"Baykan, Eda, Ingmar Weber, and Monika Henzinger. “A Comprehensive Study of Techniques for URL-Based Web Page Language Classification.” <i>ACM Transactions on the Web</i>. Association for Computing Machinery, 2013. <a href=\"https://doi.org/10.1145/2435215.2435218\">https://doi.org/10.1145/2435215.2435218</a>.","ieee":"E. Baykan, I. Weber, and M. Henzinger, “A comprehensive study of techniques for URL-based web page language classification,” <i>ACM Transactions on the Web</i>, vol. 7, no. 1. Association for Computing Machinery, 2013.","ista":"Baykan E, Weber I, Henzinger M. 2013. A comprehensive study of techniques for URL-based web page language classification. ACM Transactions on the Web. 7(1), 3."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","keyword":["Computer Networks and Communications"],"date_updated":"2024-11-06T12:07:18Z","day":"01","issue":"1","oa_version":"None","quality_controlled":"1","doi":"10.1145/2435215.2435218","volume":7,"month":"03"},{"volume":1542,"month":"06","language":[{"iso":"eng"}],"acknowledgement":"This work was supported by the NSF MRSEC program under DMR-0820054. Additional support came from the US Army Research Office through W911NF-12-1-0182.","conference":{"start_date":"2013-07-08","end_date":"2013-07-12","name":"Powders and Grains","location":"Sydney, Australia"},"oa_version":"None","publication":" AIP Conference Proceedings","quality_controlled":"1","doi":"10.1063/1.4811858","title":"From nanoscale cohesion to macroscale entanglement: opportunities for designing granular aggregate behaviour by tailoring grain shape and interactions","page":"3 - 6","date_created":"2018-12-11T11:44:43Z","status":"public","publication_status":"published","author":[{"first_name":"Heinrich","full_name":"Jaeger, Heinrich","last_name":"Jaeger"},{"full_name":"Miskin, Marc","last_name":"Miskin","first_name":"Marc"},{"full_name":"Waitukaitis, Scott R","last_name":"Waitukaitis","orcid":"0000-0002-2299-3176","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","first_name":"Scott R"}],"day":"01","date_updated":"2021-01-12T06:48:49Z","abstract":[{"lang":"eng","text":"The packing arrangement of individual particles inside a granular material and the resulting response to applied stresses depend critically on particle-particle interactions. One aspect that recently received attention are nanoscale surface features of particles, which play an important role in determining the strength of cohesive van der Waals and capillary interactions and also affect tribo-charging of grains. We describe experiments on freely falling granular streams that can detect the contributions from all three of these forces. We show that it is possible to measure the charge of individual grains and build up distributions that are detailed enough to provide stringent tests of tribo-charging models currently available. A second aspect concerns particle shape. In this case steric interactions become important and new types of aggregate behavior can be expected when non-convex particle shapes are considered that can interlock or entangle. However, a general connection between the mechanical response of a granular material and the constituents\\' shape remains unknown. This has made it infeasible to tackle the &quot;inverse packing problem&quot;, namely to start from a given, desired behavior for the aggregate as a whole and then find the particle shape the produces it. We discuss a new approach, using concepts rooted in artificial evolution that provides a way to solve this inverse problem. This approach facilitates exploring the role of arbitrary particle geometry in jammed systems and invites the discovery and design of granular matter with optimized properties."}],"date_published":"2013-06-01T00:00:00Z","type":"conference","publisher":"AIP","citation":{"short":"H. Jaeger, M. Miskin, S.R. Waitukaitis, in:,  AIP Conference Proceedings, AIP, 2013, pp. 3–6.","ieee":"H. Jaeger, M. Miskin, and S. R. Waitukaitis, “From nanoscale cohesion to macroscale entanglement: opportunities for designing granular aggregate behaviour by tailoring grain shape and interactions,” in <i> AIP Conference Proceedings</i>, Sydney, Australia, 2013, vol. 1542, pp. 3–6.","chicago":"Jaeger, Heinrich, Marc Miskin, and Scott R Waitukaitis. “From Nanoscale Cohesion to Macroscale Entanglement: Opportunities for Designing Granular Aggregate Behaviour by Tailoring Grain Shape and Interactions.” In <i> AIP Conference Proceedings</i>, 1542:3–6. AIP, 2013. <a href=\"https://doi.org/10.1063/1.4811858\">https://doi.org/10.1063/1.4811858</a>.","ista":"Jaeger H, Miskin M, Waitukaitis SR. 2013. From nanoscale cohesion to macroscale entanglement: opportunities for designing granular aggregate behaviour by tailoring grain shape and interactions.  AIP Conference Proceedings. Powders and Grains vol. 1542, 3–6.","ama":"Jaeger H, Miskin M, Waitukaitis SR. From nanoscale cohesion to macroscale entanglement: opportunities for designing granular aggregate behaviour by tailoring grain shape and interactions. In: <i> AIP Conference Proceedings</i>. Vol 1542. AIP; 2013:3-6. doi:<a href=\"https://doi.org/10.1063/1.4811858\">10.1063/1.4811858</a>","mla":"Jaeger, Heinrich, et al. “From Nanoscale Cohesion to Macroscale Entanglement: Opportunities for Designing Granular Aggregate Behaviour by Tailoring Grain Shape and Interactions.” <i> AIP Conference Proceedings</i>, vol. 1542, AIP, 2013, pp. 3–6, doi:<a href=\"https://doi.org/10.1063/1.4811858\">10.1063/1.4811858</a>.","apa":"Jaeger, H., Miskin, M., &#38; Waitukaitis, S. R. (2013). From nanoscale cohesion to macroscale entanglement: opportunities for designing granular aggregate behaviour by tailoring grain shape and interactions. In <i> AIP Conference Proceedings</i> (Vol. 1542, pp. 3–6). Sydney, Australia: AIP. <a href=\"https://doi.org/10.1063/1.4811858\">https://doi.org/10.1063/1.4811858</a>"},"extern":"1","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","year":"2013","intvolume":"      1542","publist_id":"7937","_id":"117"},{"date_published":"2013-01-01T00:00:00Z","type":"journal_article","scopus_import":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"short":"L. Aceto, M. Henzinger, J. Sgall, Information and Computation 222 (2013) 1.","ieee":"L. Aceto, M. Henzinger, and J. Sgall, “38th International Colloquium on Automata, Languages and Programming,” <i>Information and Computation</i>, vol. 222, no. 1. Elsevier, p. 1, 2013.","chicago":"Aceto, Luca, Monika Henzinger, and Jiří Sgall. “38th International Colloquium on Automata, Languages and Programming.” <i>Information and Computation</i>. Elsevier, 2013. <a href=\"https://doi.org/10.1016/j.ic.2012.11.002\">https://doi.org/10.1016/j.ic.2012.11.002</a>.","ama":"Aceto L, Henzinger M, Sgall J. 38th International Colloquium on Automata, Languages and Programming. <i>Information and Computation</i>. 2013;222(1):1. doi:<a href=\"https://doi.org/10.1016/j.ic.2012.11.002\">10.1016/j.ic.2012.11.002</a>","ista":"Aceto L, Henzinger M, Sgall J. 2013. 38th International Colloquium on Automata, Languages and Programming. Information and Computation. 222(1), 1.","mla":"Aceto, Luca, et al. “38th International Colloquium on Automata, Languages and Programming.” <i>Information and Computation</i>, vol. 222, no. 1, Elsevier, 2013, p. 1, doi:<a href=\"https://doi.org/10.1016/j.ic.2012.11.002\">10.1016/j.ic.2012.11.002</a>.","apa":"Aceto, L., Henzinger, M., &#38; Sgall, J. (2013). 38th International Colloquium on Automata, Languages and Programming. <i>Information and Computation</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.ic.2012.11.002\">https://doi.org/10.1016/j.ic.2012.11.002</a>"},"extern":"1","publisher":"Elsevier","author":[{"first_name":"Luca","last_name":"Aceto","full_name":"Aceto, Luca"},{"orcid":"0000-0002-5008-6530","last_name":"Henzinger","full_name":"Henzinger, Monika H","first_name":"Monika H","id":"540c9bbd-f2de-11ec-812d-d04a5be85630"},{"full_name":"Sgall, Jiří","last_name":"Sgall","first_name":"Jiří"}],"date_updated":"2024-11-06T12:01:32Z","day":"01","publication_status":"published","publication_identifier":{"issn":["0890-5401"]},"_id":"11758","intvolume":"       222","article_type":"letter_note","year":"2013","language":[{"iso":"eng"}],"month":"01","volume":222,"date_created":"2022-08-08T11:25:34Z","article_processing_charge":"No","status":"public","page":"1","issue":"1","doi":"10.1016/j.ic.2012.11.002","title":"38th International Colloquium on Automata, Languages and Programming","oa_version":"None","publication":"Information and Computation","quality_controlled":"1"},{"external_id":{"arxiv":["0912.1934"]},"main_file_link":[{"url":"https://arxiv.org/abs/0912.1934","open_access":"1"}],"author":[{"last_name":"Dütting","full_name":"Dütting, Paul","first_name":"Paul"},{"last_name":"Henzinger","orcid":"0000-0002-5008-6530","full_name":"Henzinger, Monika H","first_name":"Monika H","id":"540c9bbd-f2de-11ec-812d-d04a5be85630"},{"last_name":"Weber","full_name":"Weber, Ingmar","first_name":"Ingmar"}],"oa":1,"publication_identifier":{"issn":["0020-0190"]},"publication_status":"published","extern":"1","scopus_import":"1","publisher":"Elsevier","abstract":[{"lang":"eng","text":"Matching markets play a prominent role in economic theory. A prime example of such a market is the sponsored search market. Here, as in other markets of that kind, market equilibria correspond to feasible, envy free, and bidder optimal outcomes. For settings without budgets such an outcome always exists and can be computed in polynomial-time by the so-called Hungarian Method. Moreover, every mechanism that computes such an outcome is incentive compatible. We show that the Hungarian Method can be modified so that it finds a feasible, envy free, and bidder optimal outcome for settings with budgets. We also show that in settings with budgets no mechanism that computes such an outcome can be incentive compatible for all inputs. For inputs in general position, however, the presented mechanism—as any other mechanism that computes such an outcome for settings with budgets—is incentive compatible."}],"date_published":"2013-02-15T00:00:00Z","type":"journal_article","title":"Sponsored search, market equilibria, and the Hungarian Method","publication":"Information Processing Letters","status":"public","article_processing_charge":"No","date_created":"2022-08-08T11:29:08Z","page":"67-73","arxiv":1,"language":[{"iso":"eng"}],"year":"2013","article_type":"original","_id":"11759","intvolume":"       113","day":"15","date_updated":"2024-11-06T12:09:36Z","citation":{"apa":"Dütting, P., Henzinger, M., &#38; Weber, I. (2013). Sponsored search, market equilibria, and the Hungarian Method. <i>Information Processing Letters</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.ipl.2012.11.006\">https://doi.org/10.1016/j.ipl.2012.11.006</a>","mla":"Dütting, Paul, et al. “Sponsored Search, Market Equilibria, and the Hungarian Method.” <i>Information Processing Letters</i>, vol. 113, no. 3, Elsevier, 2013, pp. 67–73, doi:<a href=\"https://doi.org/10.1016/j.ipl.2012.11.006\">10.1016/j.ipl.2012.11.006</a>.","ama":"Dütting P, Henzinger M, Weber I. Sponsored search, market equilibria, and the Hungarian Method. <i>Information Processing Letters</i>. 2013;113(3):67-73. doi:<a href=\"https://doi.org/10.1016/j.ipl.2012.11.006\">10.1016/j.ipl.2012.11.006</a>","chicago":"Dütting, Paul, Monika Henzinger, and Ingmar Weber. “Sponsored Search, Market Equilibria, and the Hungarian Method.” <i>Information Processing Letters</i>. Elsevier, 2013. <a href=\"https://doi.org/10.1016/j.ipl.2012.11.006\">https://doi.org/10.1016/j.ipl.2012.11.006</a>.","ieee":"P. Dütting, M. Henzinger, and I. Weber, “Sponsored search, market equilibria, and the Hungarian Method,” <i>Information Processing Letters</i>, vol. 113, no. 3. Elsevier, pp. 67–73, 2013.","ista":"Dütting P, Henzinger M, Weber I. 2013. Sponsored search, market equilibria, and the Hungarian Method. Information Processing Letters. 113(3), 67–73.","short":"P. Dütting, M. Henzinger, I. Weber, Information Processing Letters 113 (2013) 67–73."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","doi":"10.1016/j.ipl.2012.11.006","quality_controlled":"1","oa_version":"Preprint","issue":"3","month":"02","volume":113},{"quality_controlled":"1","oa_version":"Preprint","doi":"10.1007/978-3-642-45046-4_13","volume":8289,"month":"12","year":"2013","intvolume":"      8289","_id":"11791","date_updated":"2024-11-06T12:12:00Z","day":"01","citation":{"short":"P. Dütting, M. Henzinger, M. Starnberger, in:, 9th International Conference on Web and Internet Economics, Springer Nature, 2013, pp. 146–159.","ama":"Dütting P, Henzinger M, Starnberger M. Valuation compressions in VCG-based combinatorial auctions. In: <i>9th International Conference on Web and Internet Economics</i>. Vol 8289. Springer Nature; 2013:146–159. doi:<a href=\"https://doi.org/10.1007/978-3-642-45046-4_13\">10.1007/978-3-642-45046-4_13</a>","chicago":"Dütting, Paul, Monika Henzinger, and Martin Starnberger. “Valuation Compressions in VCG-Based Combinatorial Auctions.” In <i>9th International Conference on Web and Internet Economics</i>, 8289:146–159. Springer Nature, 2013. <a href=\"https://doi.org/10.1007/978-3-642-45046-4_13\">https://doi.org/10.1007/978-3-642-45046-4_13</a>.","ieee":"P. Dütting, M. Henzinger, and M. Starnberger, “Valuation compressions in VCG-based combinatorial auctions,” in <i>9th International Conference on Web and Internet Economics</i>, Cambridge, MA, USA, 2013, vol. 8289, pp. 146–159.","ista":"Dütting P, Henzinger M, Starnberger M. 2013. Valuation compressions in VCG-based combinatorial auctions. 9th International Conference on Web and Internet Economics. WINE: International Conference on Web and Internet Economics, LNCS, vol. 8289, 146–159.","mla":"Dütting, Paul, et al. “Valuation Compressions in VCG-Based Combinatorial Auctions.” <i>9th International Conference on Web and Internet Economics</i>, vol. 8289, Springer Nature, 2013, pp. 146–159, doi:<a href=\"https://doi.org/10.1007/978-3-642-45046-4_13\">10.1007/978-3-642-45046-4_13</a>.","apa":"Dütting, P., Henzinger, M., &#38; Starnberger, M. (2013). Valuation compressions in VCG-based combinatorial auctions. In <i>9th International Conference on Web and Internet Economics</i> (Vol. 8289, pp. 146–159). Cambridge, MA, USA: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-642-45046-4_13\">https://doi.org/10.1007/978-3-642-45046-4_13</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication":"9th International Conference on Web and Internet Economics","alternative_title":["LNCS"],"title":"Valuation compressions in VCG-based combinatorial auctions","page":"146–159","status":"public","date_created":"2022-08-11T11:05:14Z","article_processing_charge":"No","language":[{"iso":"eng"}],"conference":{"end_date":"2013-12-14","start_date":"2013-12-01","name":"WINE: International Conference on Web and Internet Economics","location":"Cambridge, MA, USA"},"arxiv":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1310.3153"}],"external_id":{"arxiv":["1310.3153"]},"oa":1,"publication_identifier":{"issn":["1611-3349"],"isbn":["9783642450457"]},"publication_status":"published","author":[{"first_name":"Paul","last_name":"Dütting","full_name":"Dütting, Paul"},{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H","last_name":"Henzinger","orcid":"0000-0002-5008-6530","full_name":"Henzinger, Monika H"},{"first_name":"Martin","full_name":"Starnberger, Martin","last_name":"Starnberger"}],"publisher":"Springer Nature","extern":"1","scopus_import":"1","abstract":[{"lang":"eng","text":"The focus of classic mechanism design has been on truthful direct-revelation mechanisms. In the context of combinatorial auctions the truthful direct-revelation mechanism that maximizes social welfare is the VCG mechanism. For many valuation spaces computing the allocation and payments of the VCG mechanism, however, is a computationally hard problem. We thus study the performance of the VCG mechanism when bidders are forced to choose bids from a subspace of the valuation space for which the VCG outcome can be computed efficiently. We prove improved upper bounds on the welfare loss for restrictions to additive bids and upper and lower bounds for restrictions to non-additive bids. These bounds show that the welfare loss increases in expressiveness. All our bounds apply to equilibrium concepts that can be computed in polynomial time as well as to learning outcomes."}],"date_published":"2013-12-01T00:00:00Z","type":"conference"},{"quality_controlled":"1","oa_version":"Preprint","doi":"10.1007/978-3-642-40450-4_35","volume":8125,"month":"09","year":"2013","intvolume":"      8125","_id":"11792","date_updated":"2024-11-06T12:12:13Z","day":"01","citation":{"apa":"Dvořák, W., Henzinger, M., &#38; Williamson, D. P. (2013). Maximizing a submodular function with viability constraints. In <i>21st Annual European Symposium on Algorithms</i> (Vol. 8125, pp. 409–420). Sophia Antipolis, France: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-642-40450-4_35\">https://doi.org/10.1007/978-3-642-40450-4_35</a>","mla":"Dvořák, Wolfgang, et al. “Maximizing a Submodular Function with Viability Constraints.” <i>21st Annual European Symposium on Algorithms</i>, vol. 8125, Springer Nature, 2013, pp. 409–20, doi:<a href=\"https://doi.org/10.1007/978-3-642-40450-4_35\">10.1007/978-3-642-40450-4_35</a>.","ieee":"W. Dvořák, M. Henzinger, and D. P. Williamson, “Maximizing a submodular function with viability constraints,” in <i>21st Annual European Symposium on Algorithms</i>, Sophia Antipolis, France, 2013, vol. 8125, pp. 409–420.","ama":"Dvořák W, Henzinger M, Williamson DP. Maximizing a submodular function with viability constraints. In: <i>21st Annual European Symposium on Algorithms</i>. Vol 8125. Springer Nature; 2013:409-420. doi:<a href=\"https://doi.org/10.1007/978-3-642-40450-4_35\">10.1007/978-3-642-40450-4_35</a>","chicago":"Dvořák, Wolfgang, Monika Henzinger, and David P. Williamson. “Maximizing a Submodular Function with Viability Constraints.” In <i>21st Annual European Symposium on Algorithms</i>, 8125:409–20. Springer Nature, 2013. <a href=\"https://doi.org/10.1007/978-3-642-40450-4_35\">https://doi.org/10.1007/978-3-642-40450-4_35</a>.","ista":"Dvořák W, Henzinger M, Williamson DP. 2013. Maximizing a submodular function with viability constraints. 21st Annual European Symposium on Algorithms. ESA: European Symposium on Algorithms, LNCS, vol. 8125, 409–420.","short":"W. Dvořák, M. Henzinger, D.P. Williamson, in:, 21st Annual European Symposium on Algorithms, Springer Nature, 2013, pp. 409–420."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication":"21st Annual European Symposium on Algorithms","alternative_title":["LNCS"],"title":"Maximizing a submodular function with viability constraints","page":"409 - 420","status":"public","date_created":"2022-08-11T11:18:19Z","article_processing_charge":"No","language":[{"iso":"eng"}],"arxiv":1,"conference":{"location":"Sophia Antipolis, France","end_date":"2013-09-04","start_date":"2013-09-02","name":"ESA: European Symposium on Algorithms"},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1611.05753"}],"external_id":{"arxiv":["1611.05753"]},"related_material":{"record":[{"id":"11792","status":"public","relation":"later_version"}]},"oa":1,"publication_identifier":{"issn":["1611-3349"],"isbn":["9783642404498"]},"publication_status":"published","author":[{"first_name":"Wolfgang","last_name":"Dvořák","full_name":"Dvořák, Wolfgang"},{"full_name":"Henzinger, Monika H","last_name":"Henzinger","orcid":"0000-0002-5008-6530","id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H"},{"first_name":"David P.","full_name":"Williamson, David P.","last_name":"Williamson"}],"extern":"1","publisher":"Springer Nature","scopus_import":"1","abstract":[{"lang":"eng","text":"We study the problem of maximizing a monotone submodular function with viability constraints. This problem originates from computational biology, where we are given a phylogenetic tree over a set of species and a directed graph, the so-called food web, encoding viability constraints between these species. These food webs usually have constant depth. The goal is to select a subset of k species that satisfies the viability constraints and has maximal phylogenetic diversity. As this problem is known to be NP-hard, we investigate approximation algorithm. We present the first constant factor approximation algorithm if the depth is constant. Its approximation ratio is (1−1𝑒√). This algorithm not only applies to phylogenetic trees with viability constraints but for arbitrary monotone submodular set functions with viability constraints. Second, we show that there is no (1 − 1/e + ε)-approximation algorithm for our problem setting (even for additive functions) and that there is no approximation algorithm for a slight extension of this setting."}],"type":"conference","date_published":"2013-09-01T00:00:00Z"},{"citation":{"short":"M. Henzinger, S. Krinninger, D. Nanongkai, in:, 40th International Colloquium on Automata, Languages, and Programming, Springer Nature, 2013, pp. 607–619.","ieee":"M. Henzinger, S. Krinninger, and D. Nanongkai, “Sublinear-time maintenance of breadth-first spanning tree in partially dynamic networks,” in <i>40th International Colloquium on Automata, Languages, and Programming</i>, Riga, Latvia, 2013, vol. 7966, pp. 607–619.","ista":"Henzinger M, Krinninger S, Nanongkai D. 2013. Sublinear-time maintenance of breadth-first spanning tree in partially dynamic networks. 40th International Colloquium on Automata, Languages, and Programming. ICALP: International Colloquium on Automata, Languages, and Programming, LNCS, vol. 7966, 607–619.","chicago":"Henzinger, Monika, Sebastian Krinninger, and Danupon Nanongkai. “Sublinear-Time Maintenance of Breadth-First Spanning Tree in Partially Dynamic Networks.” In <i>40th International Colloquium on Automata, Languages, and Programming</i>, 7966:607–619. Springer Nature, 2013. <a href=\"https://doi.org/10.1007/978-3-642-39212-2_53\">https://doi.org/10.1007/978-3-642-39212-2_53</a>.","ama":"Henzinger M, Krinninger S, Nanongkai D. Sublinear-time maintenance of breadth-first spanning tree in partially dynamic networks. In: <i>40th International Colloquium on Automata, Languages, and Programming</i>. Vol 7966. Springer Nature; 2013:607–619. doi:<a href=\"https://doi.org/10.1007/978-3-642-39212-2_53\">10.1007/978-3-642-39212-2_53</a>","mla":"Henzinger, Monika, et al. “Sublinear-Time Maintenance of Breadth-First Spanning Tree in Partially Dynamic Networks.” <i>40th International Colloquium on Automata, Languages, and Programming</i>, vol. 7966, Springer Nature, 2013, pp. 607–619, doi:<a href=\"https://doi.org/10.1007/978-3-642-39212-2_53\">10.1007/978-3-642-39212-2_53</a>.","apa":"Henzinger, M., Krinninger, S., &#38; Nanongkai, D. (2013). Sublinear-time maintenance of breadth-first spanning tree in partially dynamic networks. In <i>40th International Colloquium on Automata, Languages, and Programming</i> (Vol. 7966, pp. 607–619). Riga, Latvia: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-642-39212-2_53\">https://doi.org/10.1007/978-3-642-39212-2_53</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"01","date_updated":"2024-11-06T12:12:27Z","intvolume":"      7966","_id":"11793","year":"2013","volume":7966,"month":"07","oa_version":"Preprint","quality_controlled":"1","doi":"10.1007/978-3-642-39212-2_53","abstract":[{"text":"We study the problem of maintaining a breadth-first spanning tree (BFS tree) in partially dynamic distributed networks modeling a sequence of either failures or additions of communication links (but not both). We show (1 + ε)-approximation algorithms whose amortized time (over some number of link changes) is sublinear in D, the maximum diameter of the network. This breaks the Θ(D) time bound of recomputing “from scratch”.\r\n\r\nOur technique also leads to a (1 + ε)-approximate incremental algorithm for single-source shortest paths (SSSP) in the sequential (usual RAM) model. Prior to our work, the state of the art was the classic exact algorithm of [9] that is optimal under some assumptions [27]. Our result is the first to show that, in the incremental setting, this bound can be beaten in certain cases if a small approximation is allowed.","lang":"eng"}],"date_published":"2013-07-01T00:00:00Z","type":"conference","extern":"1","scopus_import":"1","publisher":"Springer Nature","publication_status":"published","publication_identifier":{"isbn":["9783642392115"],"issn":["1611-3349"]},"related_material":{"record":[{"id":"11793","status":"public","relation":"later_version"}]},"oa":1,"author":[{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H","full_name":"Henzinger, Monika H","last_name":"Henzinger","orcid":"0000-0002-5008-6530"},{"first_name":"Sebastian","full_name":"Krinninger, Sebastian","last_name":"Krinninger"},{"full_name":"Nanongkai, Danupon","last_name":"Nanongkai","first_name":"Danupon"}],"main_file_link":[{"url":"https://arxiv.org/abs/1512.08147","open_access":"1"}],"external_id":{"arxiv":["1512.08147"]},"language":[{"iso":"eng"}],"conference":{"name":"ICALP: International Colloquium on Automata, Languages, and Programming","end_date":"2013-07-12","start_date":"2013-07-08","location":"Riga, Latvia"},"arxiv":1,"page":"607–619","date_created":"2022-08-11T11:25:13Z","article_processing_charge":"No","status":"public","publication":"40th International Colloquium on Automata, Languages, and Programming","title":"Sublinear-time maintenance of breadth-first spanning tree in partially dynamic networks","alternative_title":["LNCS"]},{"doi":"10.1109/focs.2013.64","quality_controlled":"1","oa_version":"Preprint","month":"10","_id":"11856","year":"2013","citation":{"apa":"Henzinger, M., Krinninger, S., &#38; Nanongkai, D. (2013). Dynamic approximate all-pairs shortest paths: Breaking the O(mn) barrier and derandomization. In <i>54th Annual Symposium on Foundations of Computer Science</i> (pp. 538–547). Berkeley, CA, United States: Institute of Electrical and Electronics Engineers. <a href=\"https://doi.org/10.1109/focs.2013.64\">https://doi.org/10.1109/focs.2013.64</a>","mla":"Henzinger, Monika, et al. “Dynamic Approximate All-Pairs Shortest Paths: Breaking the O(Mn) Barrier and Derandomization.” <i>54th Annual Symposium on Foundations of Computer Science</i>, Institute of Electrical and Electronics Engineers, 2013, pp. 538–47, doi:<a href=\"https://doi.org/10.1109/focs.2013.64\">10.1109/focs.2013.64</a>.","ista":"Henzinger M, Krinninger S, Nanongkai D. 2013. Dynamic approximate all-pairs shortest paths: Breaking the O(mn) barrier and derandomization. 54th Annual Symposium on Foundations of Computer Science. FOCS: Symposium on Foundations of Computer Science, 538–547.","chicago":"Henzinger, Monika, Sebastian Krinninger, and Danupon Nanongkai. “Dynamic Approximate All-Pairs Shortest Paths: Breaking the O(Mn) Barrier and Derandomization.” In <i>54th Annual Symposium on Foundations of Computer Science</i>, 538–47. Institute of Electrical and Electronics Engineers, 2013. <a href=\"https://doi.org/10.1109/focs.2013.64\">https://doi.org/10.1109/focs.2013.64</a>.","ieee":"M. Henzinger, S. Krinninger, and D. Nanongkai, “Dynamic approximate all-pairs shortest paths: Breaking the O(mn) barrier and derandomization,” in <i>54th Annual Symposium on Foundations of Computer Science</i>, Berkeley, CA, United States, 2013, pp. 538–547.","ama":"Henzinger M, Krinninger S, Nanongkai D. Dynamic approximate all-pairs shortest paths: Breaking the O(mn) barrier and derandomization. In: <i>54th Annual Symposium on Foundations of Computer Science</i>. Institute of Electrical and Electronics Engineers; 2013:538-547. doi:<a href=\"https://doi.org/10.1109/focs.2013.64\">10.1109/focs.2013.64</a>","short":"M. Henzinger, S. Krinninger, D. Nanongkai, in:, 54th Annual Symposium on Foundations of Computer Science, Institute of Electrical and Electronics Engineers, 2013, pp. 538–547."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"01","date_updated":"2024-11-06T12:18:28Z","status":"public","date_created":"2022-08-16T08:22:37Z","article_processing_charge":"No","page":"538-547","title":"Dynamic approximate all-pairs shortest paths: Breaking the O(mn) barrier and derandomization","publication":"54th Annual Symposium on Foundations of Computer Science","conference":{"start_date":"2013-10-26","end_date":"2013-10-29","name":"FOCS: Symposium on Foundations of Computer Science","location":"Berkeley, CA, United States"},"arxiv":1,"language":[{"iso":"eng"}],"external_id":{"arxiv":["1308.0776"]},"main_file_link":[{"url":"https://arxiv.org/abs/1308.0776","open_access":"1"}],"publisher":"Institute of Electrical and Electronics Engineers","scopus_import":"1","extern":"1","abstract":[{"lang":"eng","text":"We study dynamic (1 + ϵ)-approximation algorithms for the all-pairs shortest paths problem in unweighted undirected n-node m-edge graphs under edge deletions. The fastest algorithm for this problem is a randomized algorithm with a total update time of Ȏ(mn) and constant query time by Roditty and Zwick (FOCS 2004). The fastest deterministic algorithm is from a 1981 paper by Even and Shiloach (JACM 1981); it has a total update time of O(mn 2 ) and constant query time. We improve these results as follows: (1) We present an algorithm with a total update time of Ȏ(n 5/2 ) and constant query time that has an additive error of two in addition to the 1 + ϵ multiplicative error. This beats the previous Ȏ(mn) time when m = Ω(n 3/2 ). Note that the additive error is unavoidable since, even in the static case, an O(n 3-δ )-time (a so-called truly sub cubic) combinatorial algorithm with 1 + ϵ multiplicative error cannot have an additive error less than 2 - ϵ, unless we make a major breakthrough for Boolean matrix multiplication (Dor, Halperin and Zwick FOCS 1996) and many other long-standing problems (Vassilevska Williams and Williams FOCS 2010). The algorithm can also be turned into a (2 + ϵ)-approximation algorithm (without an additive error) with the same time guarantees, improving the recent (3 + ϵ)-approximation algorithm with Ȏ(n 5/2+O(1√(log n)) ) running time of Bernstein and Roditty (SODA 2011) in terms of both approximation and time guarantees. (2) We present a deterministic algorithm with a total update time of Ȏ(mn) and a query time of O(log log n). The algorithm has a multiplicative error of 1 + ϵ and gives the first improved deterministic algorithm since 1981. It also answers an open question raised by Bernstein in his STOC 2013 paper. In order to achieve our results, we introduce two new techniques: (1) A lazy Even-Shiloach tree algorithm which maintains a bounded-distance shortest-paths tree on a certain type of emulator called locally persevering emulator. (2) A derandomization technique based on moving Even-Shiloach trees as a way to derandomize the standard random set argument. These techniques might be of independent interest."}],"date_published":"2013-10-01T00:00:00Z","type":"conference","author":[{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H","full_name":"Henzinger, Monika H","orcid":"0000-0002-5008-6530","last_name":"Henzinger"},{"first_name":"Sebastian","full_name":"Krinninger, Sebastian","last_name":"Krinninger"},{"last_name":"Nanongkai","full_name":"Nanongkai, Danupon","first_name":"Danupon"}],"oa":1,"publication_status":"published","publication_identifier":{"eisbn":["978-0-7695-5135-7"],"issn":["0272-5428"]}},{"abstract":[{"lang":"eng","text":"We study the problem of matching bidders to items where each bidder i has general, strictly monotonic utility functions ui,j(pj) expressing his utility of being matched to item j at price pj. For this setting we prove that a bidder optimal outcome always exists, even when the utility functions are non-linear and non-continuous. We give sufficient conditions under\r\nwhich every mechanism that finds a bidder optimal outcome is incentive compatible. We also give a mechanism that finds a bidder optimal outcome if the conditions for incentive compatibility are satisfied. The running time of this mechanism is exponential in the number of items, but polynomial in the number of bidders."}],"type":"journal_article","date_published":"2013-03-25T00:00:00Z","extern":"1","scopus_import":"1","publisher":"Elsevier","publication_status":"published","publication_identifier":{"issn":["0304-3975"]},"related_material":{"record":[{"id":"11799","status":"public","relation":"earlier_version"}]},"author":[{"full_name":"Dütting, Paul","last_name":"Dütting","first_name":"Paul"},{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H","full_name":"Henzinger, Monika H","last_name":"Henzinger","orcid":"0000-0002-5008-6530"},{"last_name":"Weber","full_name":"Weber, Ingmar","first_name":"Ingmar"}],"page":"22-32","date_created":"2022-08-17T11:11:04Z","article_processing_charge":"No","status":"public","publication":"Theoretical Computer Science","title":"Bidder optimal assignments for general utilities","language":[{"iso":"eng"}],"intvolume":"       478","_id":"11902","year":"2013","article_type":"original","citation":{"short":"P. Dütting, M. Henzinger, I. Weber, Theoretical Computer Science 478 (2013) 22–32.","ista":"Dütting P, Henzinger M, Weber I. 2013. Bidder optimal assignments for general utilities. Theoretical Computer Science. 478(3), 22–32.","chicago":"Dütting, Paul, Monika Henzinger, and Ingmar Weber. “Bidder Optimal Assignments for General Utilities.” <i>Theoretical Computer Science</i>. Elsevier, 2013. <a href=\"https://doi.org/10.1016/j.tcs.2013.01.030\">https://doi.org/10.1016/j.tcs.2013.01.030</a>.","ieee":"P. Dütting, M. Henzinger, and I. Weber, “Bidder optimal assignments for general utilities,” <i>Theoretical Computer Science</i>, vol. 478, no. 3. Elsevier, pp. 22–32, 2013.","ama":"Dütting P, Henzinger M, Weber I. Bidder optimal assignments for general utilities. <i>Theoretical Computer Science</i>. 2013;478(3):22-32. doi:<a href=\"https://doi.org/10.1016/j.tcs.2013.01.030\">10.1016/j.tcs.2013.01.030</a>","mla":"Dütting, Paul, et al. “Bidder Optimal Assignments for General Utilities.” <i>Theoretical Computer Science</i>, vol. 478, no. 3, Elsevier, 2013, pp. 22–32, doi:<a href=\"https://doi.org/10.1016/j.tcs.2013.01.030\">10.1016/j.tcs.2013.01.030</a>.","apa":"Dütting, P., Henzinger, M., &#38; Weber, I. (2013). Bidder optimal assignments for general utilities. <i>Theoretical Computer Science</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.tcs.2013.01.030\">https://doi.org/10.1016/j.tcs.2013.01.030</a>"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2024-11-06T12:24:12Z","day":"25","issue":"3","oa_version":"None","quality_controlled":"1","doi":"10.1016/j.tcs.2013.01.030","volume":478,"month":"03"},{"volume":52,"month":"09","language":[{"iso":"eng"}],"quality_controlled":"1","publication":"Angewandte Chemie International Edition","oa_version":"None","title":"In situ generation of diimide from hydrazine and oxygen: Continuous-flow transfer hydrogenation of olefins","doi":"10.1002/anie.201303528","issue":"39","page":"10241-10244","status":"public","date_created":"2022-08-24T11:01:47Z","article_processing_charge":"No","publication_status":"published","publication_identifier":{"eissn":["1521-3773"],"issn":["1433-7851"]},"day":"23","date_updated":"2023-02-21T10:09:21Z","author":[{"full_name":"Pieber, Bartholomäus","orcid":"0000-0001-8689-388X","last_name":"Pieber","id":"93e5e5b2-0da6-11ed-8a41-af589a024726","first_name":"Bartholomäus"},{"first_name":"Sabrina Teixeira","full_name":"Martinez, Sabrina Teixeira","last_name":"Martinez"},{"first_name":"David","last_name":"Cantillo","full_name":"Cantillo, David"},{"first_name":"C. Oliver","full_name":"Kappe, C. Oliver","last_name":"Kappe"}],"extern":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publisher":"Wiley","citation":{"short":"B. Pieber, S.T. Martinez, D. Cantillo, C.O. Kappe, Angewandte Chemie International Edition 52 (2013) 10241–10244.","ama":"Pieber B, Martinez ST, Cantillo D, Kappe CO. In situ generation of diimide from hydrazine and oxygen: Continuous-flow transfer hydrogenation of olefins. <i>Angewandte Chemie International Edition</i>. 2013;52(39):10241-10244. doi:<a href=\"https://doi.org/10.1002/anie.201303528\">10.1002/anie.201303528</a>","ieee":"B. Pieber, S. T. Martinez, D. Cantillo, and C. O. Kappe, “In situ generation of diimide from hydrazine and oxygen: Continuous-flow transfer hydrogenation of olefins,” <i>Angewandte Chemie International Edition</i>, vol. 52, no. 39. Wiley, pp. 10241–10244, 2013.","ista":"Pieber B, Martinez ST, Cantillo D, Kappe CO. 2013. In situ generation of diimide from hydrazine and oxygen: Continuous-flow transfer hydrogenation of olefins. Angewandte Chemie International Edition. 52(39), 10241–10244.","chicago":"Pieber, Bartholomäus, Sabrina Teixeira Martinez, David Cantillo, and C. Oliver Kappe. “In Situ Generation of Diimide from Hydrazine and Oxygen: Continuous-Flow Transfer Hydrogenation of Olefins.” <i>Angewandte Chemie International Edition</i>. Wiley, 2013. <a href=\"https://doi.org/10.1002/anie.201303528\">https://doi.org/10.1002/anie.201303528</a>.","mla":"Pieber, Bartholomäus, et al. “In Situ Generation of Diimide from Hydrazine and Oxygen: Continuous-Flow Transfer Hydrogenation of Olefins.” <i>Angewandte Chemie International Edition</i>, vol. 52, no. 39, Wiley, 2013, pp. 10241–44, doi:<a href=\"https://doi.org/10.1002/anie.201303528\">10.1002/anie.201303528</a>.","apa":"Pieber, B., Martinez, S. T., Cantillo, D., &#38; Kappe, C. O. (2013). In situ generation of diimide from hydrazine and oxygen: Continuous-flow transfer hydrogenation of olefins. <i>Angewandte Chemie International Edition</i>. Wiley. <a href=\"https://doi.org/10.1002/anie.201303528\">https://doi.org/10.1002/anie.201303528</a>"},"scopus_import":"1","date_published":"2013-09-23T00:00:00Z","abstract":[{"text":"No catalyst required! A highly efficient, catalyst-free process to generate diimide in situ from hydrazine monohydrate and molecular oxygen for the selective reduction of alkenes has been developed. The use of a gas–liquid segmented flow system allowed safe operating conditions and dramatically enhanced this atom-economical reaction, resulting in short processing times.","lang":"eng"}],"type":"journal_article","article_type":"letter_note","year":"2013","intvolume":"        52","_id":"11959"}]