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02:00 Leibniz Universität Hannover (LUH), Institute of Production Engineering and Machine Tools (IFW) No linguistic content; Not applicable 2019

Magnetically guided multi-coordinate positioning system

Conventionally, single degree of freedom feed axes are used in machine tools. A serial coupling enables movements in several degrees of freedom. Due to this coupling, the underlying axis carries the axes arranged on it. The supporting axis also accelerates the overlying axes. Consequently, both the acceleration capacity and the dynamic behavior of the coupled axes differ. Compared to these serial kinematic chains, positioning systems with more than one degree of freedom offer numerous advantages. These are mainly the consequence of the lower masses to be moved. This results in higher acceleration and an increase in overall rigidity. In addition, the summation of positioning errors in the serial arrangement of feed axes can be avoided. In the first project phase of the basic project "Principles of a multi-coordinate positioning system for metal cutting machine tools" (DE447/126-1), therefore, IFW researched a method for the design and operation of a magnetically guided and directly driven planar positioning system. In the second project phase, which has now been applied for, the limits and benefits of the multi-coordinate positioning system will be researched. First, the control of the planar motor will be extended by compensation algorithms to reduce the parasitic detent forces and their effect will be validated. Furthermore, the potentials of model-based controllers for magnetic planar guidance are analyzed. The maximum dynamic stiffness that can be achieved by applying these various controllers will be focused. In the first project phase, it was shown that the position-dependent attraction forces of the planar motors negatively influence the guidance. Therefore, in this project phase, a method for compensating these disturbing forces is developed. The tilting moments generated by the translational acceleration are also taken into account. Based on the comparison of the dynamic properties of the multi-coordinate positioning system with those of other machine tools, the benefit of the multi-coordinate positioning system for cutting applications is evaluated. The control of the planar motors is then extended by the sixth degree of freedom. This means that the previously required mechanical torsion lock can be dispensed, so that a multi-coordinate positioning system, actively guided in all six degrees of freedom, is implemented.
  • Published: 2019
  • Publisher: Leibniz Universität Hannover (LUH), Institute of Production Engineering and Machine Tools (IFW)
  • Language: No linguistic content; Not applicable
00:29 Hydrosystems Laboratory, University of Illinois at Urbana-Champaign, Fernández, Roberto Silent film 2019

Ice meandering 02

  • Published: 2019
  • Publisher: Hydrosystems Laboratory, University of Illinois at Urbana-Champaign, Fernández, Roberto
  • Language: Silent film
16:32 Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP) English 2019

How Consistent Can We Solve the Tensor Equations of the Dynamic Smagorinsky Model?

The basic idea of the Dynamic Smagorinsky Model (DSM) is the tensor equation that relates the resolved stress terms with the respective Smagorinsky parametrizations. Although there exist for almost 30 years approaches to solve it, they include common practices which are, in my opinion, applied too uncritically. For instance, a stringent derivation of the tensor equation results in an ambiguous formulation involving a divergence operator. A second problem that may cause inconsistencies is the frequently-used extraction of the Smagorinsky parameter from the test filtering. In my presentation, I want to point out some of these issues to obtain a better understanding of the DSM. This may also lead to a reduction of mathematical inconsistencies regarding its solution.
  • Published: 2019
  • Publisher: Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP)
  • Language: English
03:07 SciFox German 2019

Wie weit fliegt ein Skispringer, der mit 72 km/h abspringt?

  • Published: 2019
  • Publisher: SciFox
  • Language: German
11:01 Gesellschaft für Informatik e.V. German 2019

Information Governance algorithmischer Entscheidungssysteme

#INFORMATIK2018, STAGE Ada, 27.09.2018: Begrüßung - Information Governance algorithmischer Entscheidungssysteme Prof. Dr. Hannes Federrath, Universität Hamburg / Präsident der Gesellschaft für Informatik
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
14:24 Gesellschaft für Informatik e.V. German 2019

Kurzimpuls: Digitale Lehrerbildung - Flächendeckende Fortbildungsoffensive?

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
01:31 Copernicus Publications Silent film 2019

Simulation of ice-wedge degradation under intermediate hydrological conditions

  • Published: 2019
  • Publisher: Copernicus Publications
  • Language: Silent film
22:12 Gesellschaft für Informatik e.V. German 2019

Sicherheit & Vertrauen in der Arbeitswelt der Zukunft

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
08:20 Royal Meteorological Institute of Belgium Silent film 2019

Zonally periodic ocean version of MAOOAM, parameter set S1: n= 1.7 and C = 0.01

66-year run of the channel-ocean version of the MAOOAM model with 40 variables, and parameters h = 1000 m, n= 1.7, and C = 0.01 kg / m^2 /s. Shown are the geopotential height difference between two locations in the spatial domain, a three-dimensional projection of the attractor of the system for the variables (ψa,1, ψo,1 To,1), and four panels representing the solution in the spatial domain. The spatial view is centered at the South pole.
  • Published: 2019
  • Publisher: Royal Meteorological Institute of Belgium
  • Language: Silent film
1:03:23 Gesellschaft für Informatik e.V. English 2019

Responsibility and Governance in the digital realm

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: English
36:32 Gesellschaft für Informatik e.V. German 2019

Auditing und Testing: Technische Herausforderung im Umgang mit ADM-Verfahren

#INFORMATIK2018 STAGE JOSEPH, 26.09.2018: Auditing und Testing: Technische Herausforderung im Umgang mit ADM-Verfahren Dr. Bernhard Waltl, BMW Group/ Dr. Matthias Grabmair, Carnegie Mellon College
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
22:31 Gesellschaft für Informatik e.V. German 2019

Technische und juristische Betrachtungen bei der Regulierung algorithmischer Entscheidungsverfahren

#INFORMATIK2018 STAGE Ada, 27.09.2018: Vortrag: „Technische und juristische Betrachtungen bei der Regulierung algorithmischer Entscheidungsverfahren“ Prof. Dr. Georg Borges, Universität des Saarlandes / GI-Fachgruppe Rechtsinformatik
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
08:20 Royal Meteorological Institute of Belgium Silent film 2019

Zonally periodic ocean version of MAOOAM, parameter set S4: n = 1.7 and C = 0.027

66-year run of the channel-ocean version of the MAOOAM model with 40 variables, and parameters h = 1000 m, n= 1.7, and C = 0.027 kg / m^2 /s. Shown are the geopotential height difference between two locations in the spatial domain, a three-dimensional projection of the attractor of the system for the variables (ψa,1, ψo,1 To,1), and four panels representing the solution in the spatial domain. The spatial view is centered at the South pole.
  • Published: 2019
  • Publisher: Royal Meteorological Institute of Belgium
  • Language: Silent film
16:36 Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP) English 2019

The roles of imbalances for divergent and rotational modes in atmospheric flows

A three-dimensional general balanced solution to the governing equations of the atmosphere is given. The deviation from this balanced, or inactive, wind solution is called the active wind. For the horizontal components, this active wind is comparable to the ageostrophic wind. The vertical active wind component is similar to the isentropic displacement vertical wind. Transformed governing equations are derived as functions of the active wind components. This is also possible for the vorticity and divergence equations, respectively. It turns out that the classical balance equation is not part of the transformed divergence equation, but reflects the balanced part which had been removed. The terms on the right of the transformed equations can be scrutinized with respect to their effects on the evolution of the atmospheric state. Exemplarily, this is done for an idealized baroclinic wave in a dry atmosphere. The different terms on the right of the transformed equations and the active wind components are visualised and interpreted in their meaning. Most importantly, the newly introduced vertical active wind component allows for an analysis of the vertical motion of isentropes. The baroclinic wave development is discussed with focus on the fronts and the generation or depletion of kinetic energy. The new method allows for a unique separation of gravity waves and vortical modes. This facilitates the analysis of gravity wave generation and propagation from jets and fronts.
  • Published: 2019
  • Publisher: Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP)
  • Language: English
09:43 Maptime Salzburg English 2019

Jupyter Notebook - Introduction

  • Published: 2019
  • Publisher: Maptime Salzburg
  • Language: English
10:30 Gesellschaft für Informatik e.V. German 2019

Technische und rechtliche Betrachtungen bei algorithmischen Entscheidungsfindungen

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
15:33 Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP) English 2019

Coarse-graining as a technique to reveal sub-grid scale fluxes and test the diffusive assumption.

The limits of model resolution in atmospheric and oceanographic modeling necessitate the use of subgrid parametrizations to account for unresolved processes. The go-to approach is using diffusive parametrizations such as the Dynamical Smagorinsky. In this work use a Coarse-Graining technique to reveal subgrid scale dynamics to test whether or not they do behave according to the diffusive assumption. We find a highly organized and structured turbulent shear production, which leads us to question the underlying assumptions and limits of diffusive parametrizations.
  • Published: 2019
  • Publisher: Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP)
  • Language: English
1:01:12 Gesellschaft für Informatik e.V. German 2019

Vertrauen vs. Technik oder Vertrauen in die Arbeitswelt der Zukunft?

#INFORMATIK2018, Ada: Panel: „Vertrauen vs. Technik oder Vertrauen durch Technik in der Arbeitswelt der Zukunft?“ Moderation: Prof. Dr. Dominik Herrmann, Universität Bamberg • Marit Hansen, Landesdatenschutzbeauftragte in Schleswig-Holstein • Ulrich Kelber, MdB (SPD), Staatssekretär a.D. und designierter Bundesbeauftragter für Datenschutz und Informationssicherheit • Susanne Dehmel, Mitglied der Geschäftsleitung bitkom e.V.
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
15:58 Gesellschaft für Informatik e.V. German 2019

Corporate Digital Responsibility in der Gesellschaft 5.0

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
14:14 Gesellschaft für Informatik e.V. German 2019

Digitale Identitäten im E-Government

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
55:15 Gesellschaft für Informatik e.V. German 2019

Digitale Identitäten: Sicher, dezentral und Europäisch?

#INFORMATIK2018 Panelgespräch: Digitale Identitäten: Sicher, dezentral und Europäisch? Moderation: Dr. Jan Sürmeli, TU Berlin • Prof. Dr. Reinhard Riedl, Präsident Schweizer InformatikGesellschaft (FH Bern) • Prof. Dr. Hannes Federrath, Präsident der Gesellschaft für Informatik (Universität Hamburg) • Prof. Dr. Kai Rannenberg, Präsidium der Gesellschaft für Informatik (Uni Frankfurt) • Prof. Dr. Stefan Jähnichen, TU Berlin / FZI Forschungszentrum Informatik • Benjamin Helfritz, DIN Deutsches Institut für Normung e.V. • Arno Fiedler, Vorstand Sichere Identität Berlin Brandenburg
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
14:24 Gesellschaft für Informatik e.V. German 2019

Selbstverwaltete digitale Identitäten

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
34:07 Gesellschaft für Informatik e.V. German 2019

Zukunft der Arbeit: Zukunft der Informatik

#INFORMATIK2018, Ada: Abschlussvortrag: „Zukunft der Arbeit: Zukunft der Informatik“ Prof. Dr.-Ing. Peter Liggesmeyer, Past President der Gesellschaft für Informatik e.V. / Leiter Fraunhofer Institut für Experimentelles Software-Engineering IESE
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
03:02 SciFox German 2019

Wie groß ist die Masse der Sonne? (berechnet aus dem Abstand Erde-Sonne und der Umlaufzeit)

  • Published: 2019
  • Publisher: SciFox
  • Language: German
17:55 Gesellschaft für Informatik e.V. German 2019

Digitale Bildung überall – und was das mit Informatik zu tun hat

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
26:52 Gesellschaft für Informatik e.V. German 2019

Von einer Corporate Digitale Responsibility zur Gesellschaft 5.0

#INFORMATIK2018 Panel: Von einer Corporate Digitale Responsibility zur Gesellschaft 5.0 Moderation: Sven Willrich, FZI • Dr. André Göbel, CapGemini • Guido Wagner, SAP SE • Dr. Tobias Knobloch, Stiftung Neue Verantwortung • Prof. Dr. Wolfgang Schröder, Uni Würzburg / Charta digitale Vernetzung e.V. i.G. • Daniel Büchle, AfB gemeinnützige GmbH
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
18:52 Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP) English 2019

On the Feasibility of Using Open Source Solvers for the Simulation of Air Flow in a Dairy Building

  • Published: 2019
  • Publisher: Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP)
  • Language: English
09:39 Gesellschaft für Informatik e.V. German 2019

Ausblick zur digitalen Ethik

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
47:50 Gesellschaft für Informatik e.V. German 2019

Quo Vadis Digitale (Lehrer-) Bildung?

#INFORMATIK2018 Panel: Quo Vadis Digitale (Lehrer-) Bildung Moderation: Prof. Dr. Ira Diethelm, Universität Oldenburg, stv. Sprecherin der Fachgruppe "Didaktik der Informatik" Juliane Petrich, Leiterin Bildung, bitkom e.V. Dieter Brückner, Bundesdirektorenkonferenz der Gymnasien Lutz Hellmig, Sprecher des GI-Fachausschusses "Informatische Bildung in Schulen" (FA IBS) Margit Stumpp, MdB (B90/Grüne), Bildungspolitische Sprecherin
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
36:30 Gesellschaft für Informatik e.V. German 2019

Big Data, Algorithmen und Regulierung aus ethischer Sicht

#INFORMATIK2018: Big Data, Algorithmen und Regulierung aus ethischer Sicht Prof. Dr. Judith Simon, Universität Hamburg / Datenethikkommission der Bundesregierung
  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
18:06 Gesellschaft für Informatik e.V. German 2019

Zukunft der Softwareentwicklung in Deutschland

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
17:39 Gesellschaft für Informatik e.V. German 2019

Kurzimpuls: Digitale Lehrerbildung - Flächendeckende Fortbildungsoffensive?

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
08:20 Royal Meteorological Institute of Belgium Silent film 2019

Zonally periodic ocean version of MAOOAM, parameter set S6: n = 1.5 and C = 0.012

66-year run of the channel-ocean version of the MAOOAM model with 40 variables, and parameters h = 1000 m, n= 1.5, and C = 0.012 kg / m^2 /s. Shown are the geopotential height difference between two locations in the spatial domain, a three-dimensional projection of the attractor of the system for the variables (ψa,1, ψo,1 To,1), and four panels representing the solution in the spatial domain. The spatial view is centered at the South pole.
  • Published: 2019
  • Publisher: Royal Meteorological Institute of Belgium
  • Language: Silent film
20:18 Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP) English 2019

Open Reproducible Research in the Geosciences: Obstacles, Solutions, and Incentives

Many journals today encourage authors to share code and data used in studies, but only a minority enforces it, and rarely give journals guidance on how these materials should be shared. Since computational reproducibility encompasses and naturally follows sharing of the used materials, the adoption by journals is even less developed. The project “Opening reproducible research (o2r)“ designed and implemented solutions to support the publication of reproducible research considering different stakeholders, such as authors, readers, reviewers, and publishers. On top of that, we identified a couple of incentives for authors to make their research accessible, for example, by easily creating interactive (geo)scientific publications. In my talk, I will give a brief overview of the concepts and solutions developed in o2r. On top of that, I will provide insights into our follow-up project o2r2 including concrete cooperations with publishers.>
  • Published: 2019
  • Publisher: Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS), Leibniz-Institut für Atmosphärenphysik (IAP)
  • Language: English
09:30 Gesellschaft für Informatik e.V. German 2019

Gebrauchte IT schafft neue Perspektiven

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
16:35 Gesellschaft für Informatik e.V. German 2019

Algorithmen fürs Allgemeinwohl: Voraussetzung für eine lebenswerte Zukunft

  • Published: 2019
  • Publisher: Gesellschaft für Informatik e.V.
  • Language: German
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