@article{KuehneHuitemaCarle2012,
  author    = {K{\"u}hne, Ralph and Huitema, George and Carle, George},
  title     = {Charging and billing in modern communications networks a comprehensive survey of the state of the art and future requirements},
  series = {IEEE communications surveys \& tutorials},
  volume    = {14},
  journal   = {IEEE communications surveys \& tutorials},
  number    = {1},
  publisher = {Inst. of Electr. and Electronics Engineers},
  address   = {Piscataway},
  issn      = {1553-877X},
  doi       = {10.1109/SURV.2011.122310.000084},
  pages     = {170 -- 192},
  year      = {2012},
  abstract  = {In mobile telecommunication networks the trend for an increasing heterogeneity of access networks, the convergence with fixed networks as well as with the Internet are apparent. The resulting future converged network with an expected wide variety of services and a possibly stiff competition between the different market participants as well as legal issues will bring about requirements for charging systems that demand for more flexibility, scalability and efficiency than is available in today's systems. This article surveys recent developments in charging and billing architectures comprising both standardisation work as well as research projects. The second main contribution of this article is a comparison of key features of these developments thus giving a list of essential charging and billing ingredients for tomorrow's communication and service environments.},
  language  = {en}
}
@article{Warschburger2017,
  author    = {Warschburger, Petra},
  title     = {Jugendliche und junge Erwachsene mit Adipositas},
  series = {Die Rehabilitation : Zeitschrift f{\"u}r Praxis und Forschung in der Rehabilitation},
  volume    = {57},
  journal   = {Die Rehabilitation : Zeitschrift f{\"u}r Praxis und Forschung in der Rehabilitation},
  number    = {5},
  publisher = {Thieme},
  address   = {Stuttgart},
  issn      = {0034-3536},
  doi       = {10.1055/s-0043-107930},
  pages     = {295 -- 302},
  year      = {2017},
  abstract  = {Hauptziel Adipositas ist eine der Hauptindikationen in der Kinder- und Jugend-Rehabilitation. F{\"u}r {\"a}ltere Jugendliche und junge Erwachsene fehlen altersspezifische Therapieangebote fast vollst{\"a}ndig. Ziel war es die W{\"u}nsche bez{\"u}glich der Inhalte und Methoden einer „perfekten Therapie" im Rahmen eines Rehabilitationsaufenthalts zu untersuchen. Methode Im Rahmen der YOUTH-Studie wurden 147 adip{\"o}se Jugendliche und junge Erwachsene beiderlei Geschlechts (zwischen 15 und 21 Jahren) mithilfe eines standardisierten Fragebogens befragt. Ergebnis Insgesamt zeigten sich relativ wenige alters- und geschlechtsspezifische Unterschiede. Interdisziplin{\"a}r geleitete, koedukative Gruppen mit Elterneinbindung wurden gew{\"u}nscht. Wichtige Themen waren gesunde Ern{\"a}hrung sowie psychosoziale Aspekte. Auch der Pr{\"a}vention von R{\"u}ckf{\"a}llen wurde eine hohe Relevanz zugeschrieben. Schlussfolgerung Psychosoziale Aspekte und die Vorbereitung auf m{\"o}gliche R{\"u}ckfallsituationen sollten integraler Bestandteil der Therapie sein.},
  language  = {de}
}
@article{BenderBertheauKoerppenetal.2022,
  author    = {Bender, Benedict and Bertheau, Clementine and K{\"o}rppen, Tim and Lauppe, Hannah and Gronau, Norbert},
  title     = {A proposal for future data organization in enterprise systems},
  series = {Information systems and e-business management},
  volume    = {20},
  journal   = {Information systems and e-business management},
  publisher = {Springer},
  address   = {Heidelberg},
  issn      = {1617-9846},
  doi       = {10.1007/s10257-022-00555-6},
  pages     = {441 -- 494},
  year      = {2022},
  abstract  = {The digital transformation sets new requirements to all classes of enterprise systems in companies. ERP systems in particular, which represent the dominant class of enterprise systems, are struggling to meet the new requirements at all levels of the architecture. Therefore, there is an urgent need to reconsider the overall architecture of the systems and address the root of the related issues. Given that many restrictions ERP pose on their adaptability are related to the standardization of data, the database layer of ERP systems is addressed. Since database serve as the foundation for data storage and retrieval, they limit the flexibility of enterprise systems and the chance to adapt to new requirements accordingly. So far, relational databases are widely used. Using a systematic literature approach, recent requirements for ERP systems were identified. Prominent database approaches were assessed against the 23 requirements identified. The results reveal the strengths and weaknesses of recent database approaches. To this end, the results highlight the demand to combine multiple database approaches to fulfill recent business requirements. From a conceptual point of view, this paper supports the idea of federated databases which are interoperable to fulfill future requirements and support business operation. This research forms the basis for renewal of the current generation of ERP systems and proposes to ERP vendors to use different database concepts in the future.},
  language  = {en}
}