@techreport{NedrencoBeck2016,
  author    = {Nedrenco, Dmitri and Beck, Johannes},
  title     = {Flachfaltbarkeit: Mathematik mit eigenen H{\"a}nden schaffen},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-133647},
  pages     = {11},
  year      = {2016},
  abstract  = {Die Arbeit besch{\"a}ftigt sich mit dem Einsatz von Origami im Schulunterricht. Genauer beschreibt sie eine Unterrichtssequenz zur Flachfaltbarkeit, einem Teilgebiet des mathematischen Papierfaltens, f{\"u}r den Mathematikunterricht in der Oberstufe an Gymnasien und h{\"o}heren Schulen. Es werden konkrete Handlungsanweisungen sowie Alternativen ausgef{\"u}hrt und begr{\"u}ndet und mit vielen Grafiken erl{\"a}utert. Ferner werden Ziele dieser Unterrichtssequenz gem{\"a}ß KMK-Bildungsstandards dargelegt. Anschließend wird ein mathematischer Blick auf die Besch{\"a}ftigung mit der Flachfaltbarkeit sowie eine Einordnung in die aktuelle Forschungslage gegeben.},
  subject      = {Origami},
  language  = {de}
}
@article{ArendtReinhardtImjelaSchulteetal.2021,
  author    = {Arendt, Robert and Reinhardt-Imjela, Christian and Schulte, Achim and Faulstich, Leona and Ullmann, Tobias and Beck, Lorenz and Martinis, Sandro and Johannes, Petrina and Lengricht, Joachim},
  title     = {Natural pans as an important surface water resource in the Cuvelai Basin — Metrics for storage volume calculations and identification of potential augmentation sites},
  series = {Water},
  volume    = {13},
  journal   = {Water},
  number    = {2},
  issn      = {2073-4441},
  doi       = {10.3390/w13020177},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-223019},
  year      = {2021},
  abstract  = {Numerous ephemeral rivers and thousands of natural pans characterize the transboundary Iishana-System of the Cuvelai Basin between Namibia and Angola. After the rainy season, surface water stored in pans is often the only affordable water source for many people in rural areas. High inter- and intra-annual rainfall variations in this semiarid environment provoke years of extreme flood events and long periods of droughts. Thus, the issue of water availability is playing an increasingly important role in one of the most densely populated and fastest growing regions in southwestern Africa. Currently, there is no transnational approach to quantifying the potential storage and supply functions of the Iishana-System. To bridge these knowledge gaps and to increase the resilience of the local people's livelihood, suitable pans for expansion as intermediate storage were identified and their metrics determined. Therefore, a modified Blue Spot Analysis was performed, based on the high-resolution TanDEM-X digital elevation model. Further, surface area-volume ratio calculations were accomplished for finding suitable augmentation sites in a first step. The potential water storage volume of more than 190,000 pans was calculated at 1.9 km\(^3\). Over 2200 pans were identified for potential expansion to facilitate increased water supply and flood protection in the future.},
  language  = {en}
}