TY  - CHAP
A1  - Jacqmin, Julien
A1  - Özdemir, Paker Doğu
A1  - Fell Kurban, Caroline
A1  - Tunç Pekkan, Zelha
A1  - Koskinen, Johanna
A1  - Suonpää, Maija
A1  - Seng, Cheyvuth
A1  - Carlon, May Kristine Jonson
A1  - Gayed, John Maurice
A1  - Cross, Jeffrey S.
A1  - Langseth, Inger
A1  - Jacobsen, Dan Yngve
A1  - Haugsbakken, Halvdan
A1  - Bethge, Joseph
A1  - Serth, Sebastian
A1  - Staubitz, Thomas
A1  - Wuttke, Tobias
A1  - Nordemann, Oliver
A1  - Das, Partha-Pratim
A1  - Meinel, Christoph
A1  - Ponce, Eva
A1  - Srinath, Sindhu
A1  - Allegue, Laura
A1  - Perach, Shai
A1  - Alexandron, Giora
A1  - Corti, Paola
A1  - Baudo, Valeria
A1  - Turró, Carlos
A1  - Moura Santos, Ana
A1  - Nilsson, Charlotta
A1  - Maldonado-Mahauad, Jorge
A1  - Valdiviezo, Javier
A1  - Carvallo, Juan Pablo
A1  - Samaniego-Erazo, Nicolay
A1  - Poce, Antonella
A1  - Re, Maria Rosaria
A1  - Valente, Mara
A1  - Karp Gershon, Sa’ar
A1  - Ruipérez-Valiente, José A.
A1  - Despujol, Ignacio
A1  - Busquets, Jaime
A1  - Kerr, John
A1  - Lorenz, Anja
A1  - Schön, Sandra
A1  - Ebner, Martin
A1  - Wittke, Andreas
A1  - Beirne, Elaine
A1  - Nic Giolla Mhichíl, Mairéad
A1  - Brown, Mark
A1  - Mac Lochlainn, Conchúr
A1  - Topali, Paraskevi
A1  - Chounta, Irene-Angelica
A1  - Ortega-Arranz, Alejandro
A1  - Villagrá-Sobrino, Sara L.
A1  - Martínez-Monés, Alejandra
A1  - Blackwell, Virginia Katherine
A1  - Wiltrout, Mary Ellen
A1  - Rami Gaddem, Mohamed
A1  - Hernández Reyes, César Augusto
A1  - Nagahama, Toru
A1  - Buchem, Ilona
A1  - Okatan, Ebru
A1  - Khalil, Mohammad
A1  - Casiraghi, Daniela
A1  - Sancassani, Susanna
A1  - Brambilla, Federica
A1  - Mihaescu, Vlad
A1  - Andone, Diana
A1  - Vasiu, Radu
A1  - Şahin, Muhittin
A1  - Egloffstein, Marc
A1  - Bothe, Max
A1  - Rohloff, Tobias
A1  - Schenk, Nathanael
A1  - Schwerer, Florian
A1  - Ifenthaler, Dirk
A1  - Hense, Julia
A1  - Bernd, Mike
ED  - Meinel, Christoph
ED  - Staubitz, Thomas
ED  - Schweiger, Stefanie
ED  - Friedl, Christian
ED  - Kiers, Janine
ED  - Ebner, Martin
ED  - Lorenz, Anja
ED  - Ubachs, George
ED  - Mongenet, Catherine
ED  - Ruipérez-Valiente, José A.
ED  - Cortes Mendez, Manoel
T1  - EMOOCs 2021
N2  - From June 22 to June 24, 2021, Hasso Plattner Institute, Potsdam, hosted the seventh European MOOC Stakeholder Summit (EMOOCs 2021) together with the eighth ACM Learning@Scale Conference.
Due to the COVID-19 situation, the conference was held fully online.
The boost in digital education worldwide as a result of the pandemic was also one of the main topics of this year’s EMOOCs. All institutions of learning have been forced to transform and redesign their educational methods, moving from traditional models to hybrid or completely online models at scale. The learnings, derived from practical experience and research, have been explored in EMOOCs 2021 in six tracks and additional workshops, covering various aspects of this field. In this publication, we present papers from the conference’s Experience Track, the Policy Track, the Business Track, the International Track, and the Workshops.
KW  - e-learning
KW  - microcredential
KW  - MOOC
KW  - digital education
KW  - experience
KW  - online course design
KW  - online course creation
KW  - higher education
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-510300
SN  - 978-3-86956-512-5
PB  - Universitätsverlag Potsdam
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Karbon, Maria
A1  - Balidakis, Kyriakos
A1  - Belda, Santiago
A1  - Nilsson, Tobias
A1  - Hagedoorn, Jan
A1  - Schuh, Harald
T1  - Long-Term evaluation of ocean tidal variation models of polar motion and UT1
JF  - Pure and applied geophysics
N2  - Recent improvements in the development of VLBI (very long baseline interferometry) and other space geodetic techniques such as the global navigation satellite systems (GNSS) require very precise a-priori information of short-period (daily and sub-daily) Earth rotation variations. One significant contribution to Earth rotation is caused by the diurnal and semi-diurnal ocean tides. Within this work, we developed a new model for the short-period ocean tidal variations in Earth rotation, where the ocean tidal angular momentum model and the Earth rotation variation have been setup jointly. Besides the model of the short-period variation of the Earth’s rotation parameters (ERP), based on the empirical ocean tide model EOT11a, we developed also ERP models, that are based on the hydrodynamic ocean tide models FES2012 and HAMTIDE. Furthermore, we have assessed the effect of uncertainties in the elastic Earth model on the resulting ERP models. Our proposed alternative ERP model to the IERS 2010 conventional model considers the elastic model PREM and 260 partial tides. The choice of the ocean tide model and the determination of the tidal velocities have been identified as the main uncertainties. However, in the VLBI analysis all models perform on the same level of accuracy. From these findings, we conclude that the models presented here, which are based on a re-examined theoretical description and long-term satellite altimetry observation only, are an alternative for the IERS conventional model but do not improve the geodetic results.
KW  - Ocean tidal model
KW  - VLBI analysis
KW  - Euler-Liouville
Y1  - 2018
U6  - https://doi.org/10.1007/s00024-018-1866-1
SN  - 0033-4553
SN  - 1420-9136
VL  - 175
IS  - 5
SP  - 1611
EP  - 1629
PB  - Springer
CY  - Basel
ER  -