@article{SandeeWilliamsEvansetal.2004,
  author    = {Sandee, A. J. and Williams, Charlotte K. and Evans, N. R. and Davies, J. E. and Boothby, C. E. and K{\"o}hler, Anna and Friend, Richard H. and Holmes, Andrew B.},
  title     = {Solution-processible conjugated electrophosphorescent polymers},
  year      = {2004},
  language  = {en}
}
@article{HayerKoehlerArisietal.2004,
  author    = {Hayer, Anna and K{\"o}hler, Anna and Arisi, E. and Bergenti, I. and Dediu, A. and Taliani, C. and Al-Suti, Mohammed K. and Khan, Muhammad S.},
  title     = {Polymer light-emitting diodes with spin-polarised charge injection.},
  issn      = {0379-6779},
  year      = {2004},
  language  = {en}
}
@article{PaeschkeWollenbergerKoehleretal.1995,
  author    = {Paeschke, Manfred and Wollenberger, Ursula and K{\"o}hler, C. and Lisec, T. and Schnakenberg, Uwe and Wagner, B.},
  title     = {Properties of interdigital electrode arrays with different geometries},
  year      = {1995},
  language  = {en}
}
@article{YangVardenyKoehleretal.2004,
  author    = {Yang, C. and Vardeny, Z. V. and K{\"o}hler, Anna and Wohlgenannt, M. and Al-Suti, Mohammed K. and Khan, Muhammad S.},
  title     = {Spectroscopic study of spin-dependent exciton formation rates in pi-conjugated semiconductors : Comparison with electroluminescence techniques},
  year      = {2004},
  abstract  = {It has been found in recent measurements that the singlet-to-triplet exciton ratio in organic light-emitting diodes (OLEDs) is larger than expected from spin degeneracy, and that singlet excitons form at a larger rate than triplets. We employed the technique of optically detected magnetic resonance to measure the spin-dependent exciton formation rates in films of a polymer and corresponding monomer, and explore the relation between the formation rates and the actual singlet-to-triplet ratio measured previously in OLEDs. We found that the spin-dependent exciton formation rates can indeed quantitatively explain the observed exciton yields, and that singlet formation rates and yields are significantly enhanced only in polymer OLEDs, but not in OLEDs made from the corresponding monomer},
  language  = {en}
}
@article{KohlerPost2023,
  author    = {Kohler, Ulrich and Post, Julia C.},
  title     = {Welcher Zweck heiligt die Mittel?},
  series = {Zeitschrift f{\"u}r Soziologie},
  volume    = {52},
  journal   = {Zeitschrift f{\"u}r Soziologie},
  number    = {1},
  publisher = {de Gruyter},
  address   = {Oldenburg},
  issn      = {2366-0325},
  doi       = {10.1515/zfsoz-2023-2001},
  pages     = {67 -- 88},
  year      = {2023},
  abstract  = {Im Vergleich zu Umfragen an Wahrscheinlichkeitsstichproben bieten Umfragen an Access-Panels, die auf Nicht-Wahrscheinlichkeitsstichproben basieren, unbestreitbare wirtschaftliche Vorteile. Diese Vorteile gehen jedoch mit unvermeidbaren Qualit{\"a}tseinbußen einher, die auch dann bestehen bleiben, wenn Erstere sehr niedrige Responseraten haben. Daher m{\"u}ssen die wirtschaftlichen Vorteile und die methodischen Einschr{\"a}nkungen gegeneinander abgewogen werden. Es wird argumentiert, dass diese Abw{\"a}gung anhand normativer Festlegungen erfolgen muss. Unter Anwendung der hier vorgeschlagenen Maßst{\"a}be kommt der Beitrag zu dem Schluss, dass die Qualit{\"a}tsanspr{\"u}che an {\"u}ber Massenmedien verbreitete Meinungsumfragen h{\"o}her sein sollten als f{\"u}r rein (sozial)wissenschaftliche Zwecke.},
  language  = {de}
}
@article{KohlerPost2023,
  author    = {Kohler, Ulrich and Post, Julia C.},
  title     = {Pulp Science?},
  series = {Gesellschaft, Wirtschaft, Politik : GWP : Sozialwissenschaften f{\"u}r politische Bildung},
  volume    = {72},
  journal   = {Gesellschaft, Wirtschaft, Politik : GWP : Sozialwissenschaften f{\"u}r politische Bildung},
  number    = {4},
  publisher = {Budrich},
  address   = {Leverkusen},
  issn      = {2196-1654},
  doi       = {10.3224/gwp.v72i4.09},
  pages     = {475 -- 483},
  year      = {2023},
  language  = {de}
}
@article{PostClassKohler2020,
  author    = {Post, Julia C. and Class, Fabian and Kohler, Ulrich},
  title     = {Unit nonresponse biases in estimates of SARS-CoV-2 prevalence},
  series = {Survey research methods},
  volume    = {14},
  journal   = {Survey research methods},
  number    = {2},
  publisher = {European Survey Research Association},
  address   = {Duisburg},
  issn      = {1864-3361},
  doi       = {10.18148/srm/2020.v14i2.7755},
  pages     = {115 -- 121},
  year      = {2020},
  abstract  = {Since COVID-19 became a pandemic, many studies are being conducted to get a better understanding of the disease itself and its spread. One crucial indicator is the prevalence of SARS-CoV-2 infections. Since this measure is an important foundation for political decisions, its estimate must be reliable and unbiased. This paper presents reasons for biases in prevalence estimates due to unit nonresponse in typical studies. Since it is difficult to avoid bias in situations with mostly unknown nonresponse mechanisms, we propose the maximum amount of bias as one measure to assess the uncertainty due to nonresponse. An interactive web application is presented that calculates the limits of such a conservative unit nonresponse confidence interval (CUNCI).},
  language  = {en}
}