@misc{TroendleLilliestamMarellietal.2020,
  author    = {Tr{\"o}ndle, Tim and Lilliestam, Johan and Marelli, Stefano and Pfenninger, Stefan},
  title     = {Trade-offs between geographic scale, cost, and infrastructure requirements for fully renewable electricity in Europe},
  series = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Wirtschafts- und Sozialwissenschaftliche Reihe},
  number    = {9},
  doi       = {10.25932/publishup-53961},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-539611},
  pages     = {1929 -- 1948},
  year      = {2020},
  abstract  = {The European potential for renewable electricity is sufficient to enable fully renewable supply on different scales, from self-sufficient, subnational regions to an interconnected continent. We not only show that a continental-scale system is the cheapest, but also that systems on the national scale and below are possible at cost penalties of 20\% or less. Transmission is key to low cost, but it is not necessary to vastly expand the transmission system. When electricity is transmitted only to balance fluctuations, the transmission grid size is comparable to today's, albeit with expanded cross-border capacities. The largest differences across scales concern land use and thus social acceptance: in the continental system, generation capacity is concentrated on the European periphery, where the best resources are. Regional systems, in contrast, have more dispersed generation. The key trade-off is therefore not between geographic scale and cost, but between scale and the spatial distribution of required generation and transmission infrastructure.},
  language  = {en}
}
@misc{Lang2006,
  author    = {Lang, Kai-Olaf},
  title     = {Polen und Kerneuropa},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9804},
  year      = {2006},
  abstract  = {Mit großer Skepsis werden in Polen die Diskussionen zum Thema "Kerneuropa" aufgenommen. Das Land f{\"u}rchtet, an den Rand gedr{\"a}ngt zu werden, sollte ein innerer Kreis in der EU, eine "Union in der Union", entstehen. Deutschland hat mehrfach die Idee eines Kerneuropa unterst{\"u}tzt. Ein deutsch-polnischer Austausch zu Inhalten und Perspektiven eines solchen Kerns k{\"o}nnte darum polnische Bef{\"u}rchtungen abbauen.},
  language  = {de}
}
@misc{KhalilKohlerTjaden2022,
  author    = {Khalil, Samir and Kohler, Ulrich and Tjaden, Jasper Dag},
  title     = {Is There a Rural Penalty in Language Acquisition? Evidence From Germany's Refugee Allocation Policy},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  issn      = {1867-5808},
  doi       = {10.25932/publishup-56626},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-566264},
  pages     = {1 -- 11},
  year      = {2022},
  abstract  = {Emerging evidence has highlighted the important role of local contexts for integration trajectories of asylum seekers and refugees. Germany's policy of randomly allocating asylum seekers across Germany may advantage some and disadvantage others in terms of opportunities for equal participation in society. This study explores the question whether asylum seekers that have been allocated to rural areas experience disadvantages in terms of language acquisition compared to those allocated to urban areas. We derive testable assumptions using a Directed Acyclic Graph (DAG) which are then tested using large-N survey data (IAB-BAMF-SOEP refugee survey). We find that living in a rural area has no negative total effect on language skills. Further the findings suggest that the "null effect" is the result of two processes which offset each other: while asylum seekers in rural areas have slightly lower access for formal, federally organized language courses, they have more regular exposure to German speakers.},
  language  = {en}
}