@article{BuehlerChristenKowalskietal.2011, author = {B{\"u}hler, Yves and Christen, Marc and Kowalski, Julia and Bartelt, Perry}, title = {Sensitivity of snow avalanche simulations to digital elevation model quality and resolution}, series = {Annals of Glaciology}, volume = {52}, journal = {Annals of Glaciology}, number = {58}, publisher = {Cambridge University Press}, address = {Cambridge}, isbn = {1727-5644}, pages = {72 -- 80}, year = {2011}, abstract = {Digital elevation models (DEMs), represent the three-dimensional terrain and are the basic input for numerical snow avalanche dynamics simulations. DEMs can be acquired using topographic maps or remote-sensing technologies, such as photogrammetry or lidar. Depending on the acquisition technique, different spatial resolutions and qualities are achieved. However, there is a lack of studies that investigate the sensitivity of snow avalanche simulation algorithms to the quality and resolution of DEMs. Here, we perform calculations using the numerical avalance dynamics model RAMMS, varying the quality and spatial resolution of the underlying DEMs, while holding the simulation parameters constant. We study both channelized and open-terrain avalanche tracks with variable roughness. To quantify the variance of these simulations, we use well-documented large-scale avalanche events from Davos, Switzerland (winter 2007/08), and from our large-scale avalanche test site, Valĺee de la Sionne (winter 2005/06). We find that the DEM resolution and quality is critical for modeled flow paths, run-out distances, deposits, velocities and impact pressures. Although a spatial resolution of ~25 m is sufficient for large-scale avalanche modeling, the DEM datasets must be checked carefully for anomalies and artifacts before using them for dynamics calculations.}, language = {en} } @article{PieperKlein2011, author = {Pieper, Martin and Klein, Peter}, title = {A simple and accurate numerical network flow model for bionic micro heat exchangers}, series = {Heat mass transfer}, volume = {47}, journal = {Heat mass transfer}, number = {5}, publisher = {Springer}, address = {Berlin}, isbn = {0947-7411}, pages = {491 -- 503}, year = {2011}, language = {en} } @article{Pieper2011, author = {Pieper, Martin}, title = {Multiobjective optimization with expensive objectives applied to a thermodynamic material design problem}, series = {Proceedings in applied mathematics and mechanics : PAMM. 11 (2011), H. 1}, journal = {Proceedings in applied mathematics and mechanics : PAMM. 11 (2011), H. 1}, publisher = {Wiley}, address = {Weinheim}, isbn = {1617-7061}, pages = {733 -- 734}, year = {2011}, language = {en} } @incollection{Fabo2011, author = {Fabo, Sabine}, title = {REMOTEWORDS - anticipating the big observer}, series = {Hacking the city : Interventionen in urbanen und kommunikativen R{\"a}umen ; Museum Folkwang, [16. Juli - 26. September 2010]}, booktitle = {Hacking the city : Interventionen in urbanen und kommunikativen R{\"a}umen ; Museum Folkwang, [16. Juli - 26. September 2010]}, editor = {Schmidt, Sabine Maria}, publisher = {Steidl ; Edition Folkwang}, address = {G{\"o}ttingen [u.a.]}, isbn = {978-3-86930-187-7}, pages = {134 -- 137}, year = {2011}, subject = {Streetart}, language = {en} } @inproceedings{OlaruKowalskiSethietal.2011, author = {Olaru, Alexandra Maria and Kowalski, Julia and Sethi, Vaishali and Bl{\"u}mich, Bernhard}, title = {Fluid Transport in Porous Media probed by Relaxation-Exchange NMR}, series = {2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.}, booktitle = {2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.}, year = {2011}, language = {en} } @incollection{Helmig2011, author = {Helmig, Ilka}, title = {Friendship : editorial illustration}, series = {Papercraft 2 : design and art with paper}, booktitle = {Papercraft 2 : design and art with paper}, publisher = {Gestalten Verlag}, address = {Berlin}, isbn = {978-3-89955-333-8}, pages = {237}, year = {2011}, subject = {Papierkunst}, language = {en} } @article{ParlLarueStreunetal.2011, author = {Parl, C. and Larue, H. and Streun, M. and Ziemons, Karl}, title = {Double-side-readout technique for SiPM-matrices}, series = {2010 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)}, journal = {2010 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)}, publisher = {IEEE}, address = {New York}, issn = {1095-7863}, pages = {1486 -- 1487}, year = {2011}, abstract = {In our case the double-side-method is used to minimize the complexity of a matrix-readout. Here the number of channels is reduced to 2√N̅. It is also possible to benefit from the method in a single pixel readout system. One signal can be used to measure position and energy of the event, the other one can be applied to a fast trigger-circuit at the same time. In a next step we will investigate timing behavior and electrical crosstalk of the circuit.}, language = {en} } @incollection{FunkeBoernerHendricketal.2011, author = {Funke, Harald and B{\"o}rner, Sebastian and Hendrick, P. and Recker, E.}, title = {Modification and testing of an engine and fuel control system for a hydrogen fuelled gas turbine}, series = {Progress in Propulsion Physics. Vol. 2}, booktitle = {Progress in Propulsion Physics. Vol. 2}, publisher = {EDP Sciences}, address = {Les Ulis}, isbn = {978-2-7598-0673-7}, pages = {475 -- 486}, year = {2011}, language = {en} } @inproceedings{SiekmannMueller2011, author = {Siekmann, Thomas and M{\"u}ller, Karsten}, title = {Adaptive potential of the stormwater management in urban areas faced by the climate change}, series = {12th International Conference on Urban Drainage, Porto Alegre/Brazil, 11-16 September 2011}, booktitle = {12th International Conference on Urban Drainage, Porto Alegre/Brazil, 11-16 September 2011}, pages = {9 S.}, year = {2011}, language = {en} } @inproceedings{ThenentDahmann2011, author = {Thenent, N. E. and Dahmann, Peter}, title = {Increasing aircraft design flexibility - The development of a hydrostatic transmission for gliders with self-launching capability}, series = {Deutscher Luft- und Raumfahrtkongress 2011 : Bremen, 27. bis 29. September 2011 ; Tagungsband}, booktitle = {Deutscher Luft- und Raumfahrtkongress 2011 : Bremen, 27. bis 29. September 2011 ; Tagungsband}, publisher = {Dt. Gesellschaft f{\"u}r Luft- und Raumfahrt}, address = {Bonn}, isbn = {978-3-9321-8274-7}, pages = {865 -- 883}, year = {2011}, language = {en} }