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Tools for designing riverscapes co-creatively. Walk! Find typologies! Design spatial visions!
(2020)
Bilder, die hängen bleiben. Wie lassen sich transdisziplinäre Transformationsprozesse gestalten?
(2020)
In komplexen, landschaftlichen Transformationsprozessen, in denen Akteure mit unterschiedlichen fachlichen Hintergründen ko-kreativ Wege in eine nachhaltige Zukunft suchen, stellt sich die Frage: Wie lässt sich Komplexität so ausdrücken und darstellen, dass sie von möglichst vielen verstanden und als Herausforderung angenommen wird? Diese Frage steht vor allem in transdisziplinären Forschungssettings wie etwas Reallaboren im Mittelpunkt. Unterschiedliche bildliche Darstellungen können dabei, so die These dieses Beitrags, implizites Wissen versammeln und niedrigschwellige Zugänge zu komplexen Diskussionen schaffen. Anders als etwa lange textliche Darstellungen und Tabellen fungieren Bilder als Anker der Erinnerung, mit denen sich Akteure auch in länger andauernden Prozessen immer wieder verorten können. Um „die Landschaftsforschung anschlussfähig an den Erwartungs-, Erfahrungs-, Wissens- und Überzeugungshorizont betroffener Menschen zu machen“ (Berr 2018b, S. 4) können Erlebte, Konzipierte und Verhandelte Bilder zentrales Verständigungs-Medium sein.
Analysis of methods for prioritizing critical data transmissions in agricultural vehicular networks
(2020)
Applying wireless communication technologies to agricultural vehicular networks often results in high end-to-end delays and loss of packets due to intermittent or broken connectivity. This paper analyses the methods for the successful delivery of the vehicular data within acceptable delay times. Different kinds of data that are generated and transmitted in agricultural networks are considered in this paper, followed by the data prioritization methods which allow critical data to be prioritized against other data. In this regard, Enhanced Distributed Channel Access, Differentiated Services, and application-based data rate variation are discussed in conjunction with the Simple Network Management Protocol. These techniques are simulated or tested separately and then together and the results show that even in poor network conditions, high-prioritized data is not lost or delayed.
The aim of the study was to examine different pH parameters, such as variations throughout the day, depending on differing concentrate feed proportions. Moreover, special attention was payed to individual variation in microbial efficiencies (microbial crude protein/fermented organic matter) and their relation to ruminal pH, nutrient flows and digestibilities. For this, cows were grouped according to microbial efficiency (more, n = 5, vs. less efficient cows, n = 4). After calving, thirteen ruminally cannulated pluriparous cows, including nine duodenally cannulated animals, were divided into groups offered rations with a lower (35% on dry matter basis, n = 7) or a higher (60% on dry matter basis, n = 6) concentrate feed proportion. Ruminal pH parameters were assessed continuously by using intraruminal probes. Nutrient flows, nutrient digestibility and microbial efficiency were determined for duodenally cannulated cows. For most ruminal pH parameters it seemed that individual variability was higher than the treatment effect. However, a positive relationship between actual concentrate intake and diurnal pH fluctuations was found. Besides, the effect of individually different microbial efficiencies was assessed. Again, there were no group differences for pH parameters. However, nutrient flows were significantly higher in more efficient cows, whereas digestibilities were lower in in more efficient cows.