@inproceedings{PeterHoffmannNedwedetal., author = {Peter, Pascal and Hoffmann, Sebastian and Nedwed, Frank and Hoeltgen, Laurent and Weickert, Joachim}, title = {From Optimised Inpainting with Linear PDEs Towards Competitive Image Compression Codecs}, series = {Image and Video Technology, 7th Pacific-Rim Symposium, PSIVT 2015, Auckland, New Zealand, November 25-27, 2015}, booktitle = {Image and Video Technology, 7th Pacific-Rim Symposium, PSIVT 2015, Auckland, New Zealand, November 25-27, 2015}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-29450-6}, doi = {10.1007/978-3-319-29451-3_6}, pages = {63 -- 74}, abstract = {For inpainting with linear partial differential equations (PDEs) such as homogeneous or biharmonic diffusion, sophisticated data optimisation strategies have been found recently. These allow high-quality reconstructions from sparse known data. While they have been explicitly developed with compression in mind, they have not entered actual codecs so far: Storing these optimised data efficiently is a nontrivial task. Since this step is essential for any competetive codec, we propose two new compression frameworks for linear PDEs: Efficient storage of pixel locations obtained from an optimal control approach, and a stochastic strategy for a locally adaptive, tree-based grid. Suprisingly, our experiments show that homogeneous diffusion inpainting can surpass its often favoured biharmonic counterpart in compression. Last but not least, we demonstrate that our linear approach is able to beat both JPEG2000 and the nonlinear state-of-the-art in PDE-based image compression.}, language = {en} } @misc{HuebenerHoffmannKeuleretal., author = {H{\"u}bener, Heike and Hoffmann, Peter and Keuler, Klaus and Pfeifer, Susanne and Ramthun, Hans and Spekat, Arne and Steger, Christian and Warrach-Sagi, Kirsten}, title = {Deriving user-informed climate information from climate model ensemble results}, series = {Advances in Science and Research}, volume = {14}, journal = {Advances in Science and Research}, issn = {1992-0628}, doi = {10.5194/asr-14-261-2017}, pages = {261 -- 269}, language = {en} } @techreport{HuebenerBuelowFookenetal., author = {H{\"u}bener, Heike and B{\"u}low, Katharina and Fooken, Cornelia and Fr{\"u}h, Barbara and Hoffmann, Peter and H{\"o}pp, Simona and Keuler, Klaus and Menz, Christoph and Mohr, Viktoria and Radtke, Kai and Woldt, Michael}, title = {ReKliEs-De Ergebnisbericht}, publisher = {Eigenverlag des Hessischen Landesamtes HLNUG}, address = {Wiesbaden}, pages = {56}, language = {de} } @incollection{HerzbergAlheitHoffmannetal., author = {Herzberg, Heidrun and Alheit, Peter and Hoffmann, Stephanie and Ricker, Kirsten and Stroobants, Veerle}, title = {The ‚Strangeness' of Public Spaces in Anogia. An Ethnomethodological Approach}, series = {Education, Modernisation and Peripheral Community}, booktitle = {Education, Modernisation and Peripheral Community}, editor = {Papaioannou, Skevos and Alheit, Peter and Olesen, Henning Salling}, publisher = {RUC}, address = {Roskilde}, isbn = {87-7349-409-7}, pages = {227 -- 238}, language = {en} } @misc{DavinRechidBreiletal., author = {Davin, Edouard and Rechid, Diana and Breil, Marcus and Cardoso, Rita M. and Coppola, Erika and Hoffmann, Peter and Jach, Lisa L. and Katragkou, Eleni and Noblet-Ducoudr{\´e}, Nathalie de and Radtke, Kai and Raffa, Mario and Soares, Pedro and Sofiadis, Giannis and Strada, Susanna and Strandberg, Gustav and T{\"o}lle, Merja H. and Warrach-Sagi, Kirsten and Wulfmeyer, Volker}, title = {Biogeophysical impacts of deforestation in Europe First results from the LUCAS Regional Climate Mode intercomparison}, series = {Earth System Dynamics}, volume = {11}, journal = {Earth System Dynamics}, number = {1}, issn = {2190-4995}, doi = {10.5194/esd-11-183-2020}, pages = {183 -- 200}, abstract = {The Land Use and Climate Across Scales Flagship Pilot Study (LUCAS FPS) is a coordinated community effort to improve the integration of land use change (LUC) in regional climate models (RCMs) and to quantify the biogeophysical effects of LUC on local to regional climate in Europe. In the first phase of LUCAS, nine RCMs are used to explore the biogeophysical impacts of re-/afforestation over Europe: two idealized experiments representing respectively a non-forested and a maximally forested Europe are compared in order to quantify spatial and temporal variations in the regional climate sensitivity to forestation. We find some robust features in the simulated response to forestation. In particular, all models indicate a year-round decrease in surface albedo, which is most pronounced in winter and spring at high latitudes. This results in a winter warming effect, with values ranging from +0.2 to +1 K on average over Scandinavia depending on models. However, there are also a number of strongly diverging responses. For instance, there is no agreement on the sign of temperature changes in summer with some RCMs predicting a widespread cooling from forestation (well below -2 K in most regions), a widespread warming (around +2 K or above in most regions) or a mixed response. A large part of the inter-model spread is attributed to the representation of land processes. In particular, differences in the partitioning of sensible and latent heat are identified as a key source of uncertainty in summer. Atmospheric processes, such as changes in incoming radiation due to cloud cover feedbacks, also influence the simulated response in most seasons. In conclusion, the multi-model approach we use here has the potential to deliver more robust and reliable information to stakeholders involved in land use planning, as compared to results based on single models. However, given the contradictory responses identified, our results also show that there are still fundamental uncertainties that need to be tackled to better anticipate the possible intended or unintended consequences of LUC on regional climates.}, language = {en} } @misc{RoggenbuckVermeireHoffmannetal., author = {Roggenbuck, Dirk and Vermeire, Severine and Hoffmann, Ilse and Reinhold, Dirk and Schierack, Peter and Goihl, Alexander and Arnim, Ulrike von and De Hertogh, Gert and Polymeros, Dimitrios and Bogdanos, Dimitrios Petrou and Bossuyt, Xavier}, title = {Evidence of Crohn's disease-related anti-glycoprotein 2 antibodies in patients with celiac disease}, series = {Clinical Chemistry and Laboratory Medicine}, volume = {53}, journal = {Clinical Chemistry and Laboratory Medicine}, number = {9}, issn = {1437-4331}, doi = {10.1515/cclm-2014-0238}, pages = {1349 -- 1357}, language = {en} }