@phdthesis{Koehler2015,
  author    = {K{\"o}hler, Anke},
  title     = {Theoriebasierte Betreuung des Schulpraktikums im Lehramtsstudium Englisch},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-91531},
  school      = {Universit{\"a}t Potsdam},
  year      = {2015},
  abstract  = {Der Beitrag der Dissertation „Theoriebasierte Betreuung vom Schulpraktikum im Lehramtsstudium Englisch" zum wissenschaftlichen Diskurs liegt in der Verbindung von Theoriebereichen der Professionalisierungsforschung und angewandten Linguistik mit Untersuchungen zur hochschuldidaktischen Begleitung und Betreuung im ersten Unterrichtspraktikum des Lehramtsstudiums, dem fachdidaktischen Tagespraktikum, an der Universit{\"a}t Potsdam. Ein interaktionsanalytisches Vorgehen wurde eingesetzt zur Weiterentwicklung des hochschuldidaktischen Settings einer disziplinenverbindenden, fachwissenschaftlichen Begleitung von Praktika im komplexen Kontext Schule. Die Implementierung entsprechender Formate ins regul{\"a}re Studium wurde in einer {\"u}ber drei Jahre angelegten iterativen Studie turnusm{\"a}ßig evaluiert.},
  language  = {de}
}
@article{ScholkmannSiemonBoometal.2017,
  author    = {Scholkmann, Antonia and Siemon, Jens and Boom, Kay-Dennis and Knigge, Michel},
  title     = {Lernzeitnutzung im Planspielunterricht},
  series = {Zeitschrift f{\"u}r Erziehungswissenschaft},
  volume    = {20},
  journal   = {Zeitschrift f{\"u}r Erziehungswissenschaft},
  publisher = {Springer},
  address   = {Wiesbaden},
  issn      = {1434-663X},
  doi       = {10.1007/s11618-017-0736-4},
  pages     = {651 -- 669},
  year      = {2017},
  abstract  = {The effective use of learning time is considered one of the most important predictors of successful and good teaching. In the present study we investigated how cognitive skills and goal orientation influenced the effective use of learning time during the open phases of game-based learning We used a newly developed method for video- and audio analysis (German: MuVA), which allowed for reliable documentation of students' interactions during those phases. The two-step multiple regression model demonstrated that both the learner's and the learning partner's goal orientation explain significant parts of the variance: A high performance goal orientation impairs a student's effective use of learning time, while a high performance avoidance orientation has a positive impact on his or her effective use of learning time. Working with a partner who has a high learning goal orientation or a high work avoidance orientation increases a student's effective use of his or her learning time, while a high work avoidance orientation on the partner's side has the opposite effect. Cognitive skills did not influence the effective use of learning time.},
  language  = {de}
}
@phdthesis{Parry2023,
  author    = {Parry, Victor},
  title     = {From individual to community level: Assessing swimming movement, dispersal and fitness of zooplankton},
  doi       = {10.25932/publishup-59769},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-597697},
  school      = {Universit{\"a}t Potsdam},
  pages     = {ix, 118},
  year      = {2023},
  abstract  = {Movement is a mechanism that shapes biodiversity patterns across spatialtemporal scales. Thereby, the movement process affects species interactions, population dynamics and community composition. In this thesis, I disentangled the effects of movement on the biodiversity of zooplankton ranging from the individual to the community level. On the individual movement level, I used video-based analysis to explore the implication of movement behavior on preypredator interactions. My results showed that swimming behavior was of great importance as it determined their survival in the face of predation. The findings also additionally highlighted the relevance of the defense status/morphology of prey, as it not only affected the prey-predator relationship by the defense itself but also by plastic movement behavior. On the community movement level, I used a field mesocosm experiment to explore the role of dispersal (time i.e., from the egg bank into the water body and space i.e., between water bodies) in shaping zooplankton metacommunities. My results revealed that priority effects and taxon-specific dispersal limitation influenced community composition. Additionally, different modes of dispersal also generated distinct community structures. The egg bank and biotic vectors (i.e. mobile links) played significant roles in the colonization of newly available habitat patches. One crucial aspect that influences zooplankton species after arrival in new habitats is the local environmental conditions. By using common garden experiments, I assessed the performance of zooplankton communities in their home vs away environments in a group of ponds embedded within an agricultural landscape. I identified environmental filtering as a driving factor as zooplankton communities from individual ponds developed differently in their home and away environments. On the individual species level, there was no consistent indication of local adaptation. For some species, I found a higher abundance/fitness in their home environment, but for others, the opposite was the case, and some cases were indifferent. Overall, the thesis highlights the links between movement and biodiversity patterns, ranging from the individual active movement to the community level.},
  language  = {en}
}
@phdthesis{Witt2018,
  author    = {Witt, Tanja Ivonne},
  title     = {Camera Monitoring at volcanoes},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-421073},
  school      = {Universit{\"a}t Potsdam},
  pages     = {viii, 140},
  year      = {2018},
  abstract  = {Basaltic fissure eruptions, such as on Hawai'i or on Iceland, are thought to be driven by the lateral propagation of feeder dikes and graben subsidence. Associated solid earth processes, such as deformation and structural development, are well studied by means of geophysical and geodetic technologies. The eruptions themselves, lava fountaining and venting dynamics, in turn, have been much less investigated due to hazardous access, local dimension, fast processes, and resulting poor data availability. This thesis provides a detailed quantitative understanding of the shape and dynamics of lava fountains and the morphological changes at their respective eruption sites. For this purpose, I apply image processing techniques, including drones and fixed installed cameras, to the sequence of frames of video records from two well-known fissure eruptions in Hawai'i and Iceland. This way I extract the dimensions of multiple lava fountains, visible in all frames. By putting these results together and considering the acquisition times of the frames I quantify the variations in height, width and eruption velocity of the lava fountains. Then I analyse these time-series in both time and frequency domains and investigate the similarities and correlations between adjacent lava fountains. Following this procedure, I am able to link the dynamics of the individual lava fountains to physical parameters of the magma transport in the feeder dyke of the fountains. The first case study in this thesis focuses on the March 2011 Pu'u'O'o eruption, Hawai'i, where a continuous pulsating behaviour at all eight lava fountains has been observed. The lava fountains, even those from different parts of the fissure that are closely connected, show a similar frequency content and eruption behaviour. The regular pattern in the heights of lava fountain suggests a controlling process within the magma feeder system like a hydraulic connection in the underlying dyke, affecting or even controlling the pulsating behaviour. The second case study addresses the 2014-2015 Holuhraun fissure eruption, Iceland. In this case, the feeder dyke is highlighted by the surface expressions of graben-like structures and fault systems. At the eruption site, the activity decreases from a continuous line of fire of ~60 vents to a limited number of lava fountains. This can be explained by preferred upwards magma movements through vertical structures of the pre-eruptive morphology. Seismic tremors during the eruption reveal vent opening at the surface and/or pressure changes in the feeder dyke. The evolving topography of the cinder cones during the eruption interacts with the lava fountain behaviour. Local variations in the lava fountain height and width are controlled by the conduit diameter, the depth of the lava pond and the shape of the crater. Modelling of the fountain heights shows that long-term eruption behaviour is controlled mainly by pressure changes in the feeder dyke. This research consists of six chapters with four papers, including two first author and two co-author papers. It establishes a new method to analyse lava fountain dynamics by video monitoring. The comparison with the seismicity, geomorphologic and structural expressions of fissure eruptions shows a complex relationship between focussed flow through dykes, the morphology of the cinder cones, and the lava fountain dynamics at the vents of a fissure eruption.},
  language  = {en}
}