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607 results on '"Schmidt, Moritz"'

1. A Concept for User-Centered Delegation of Abstract High-Level Tasks to Cobots for Flexible Lot Sizes

Author

Schmidt, Moritz and Meitinger, Claudia

Subjects
Computer Science - Robotics
Abstract

Technical advances in collaborative robots (cobots) are making them increasingly attractive to companies. However, many human operators are not trained to program complex machines. Instead, humans are used to communicating with each other on a task-based level rather than through specific instructions, as is common with machines. The gap between low-level instruction-based and high-level task-based communication leads to low values for usability scores of teach pendant programming. As a solution, we propose a task-based interaction concept that allows human operators to delegate a complex task to a machine without programming by specifying a task via triplets. The concept is based on task decomposition and a reasoning system using a cognitive architecture. The approach is evaluated in an industrial use case where mineral cast basins have to be sanded by a cobot in a crafts enterprise.

Published
2023

2. Two-qubit operations for finite-energy Gottesman-Kitaev-Preskill encodings

Author

Rojkov, Ivan, Röggla, Paul Moser, Wagener, Martin, Fontboté-Schmidt, Moritz, Welte, Stephan, Home, Jonathan, and Reiter, Florentin

Subjects
Quantum Physics
Abstract

We present techniques for performing two-qubit gates on Gottesman-Kitaev-Preskill (GKP) codes with finite energy, and find that operations designed for ideal infinite-energy codes create undesired entanglement when applied to physically realistic states. We demonstrate that this can be mitigated using recently developed local error-correction protocols, and evaluate the resulting performance. We also propose energy-conserving finite-energy gate implementations which largely avoid the need for further correction., Comment: 7 + 40 pages, 3 + 25 figures

Published
2023

3. Convenience vs. Reliability? Evaluation of Human-Robot Interaction Preferences in a Production Environment

Author

Schmidt, Moritz, Meitinger, Claudia, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, van Leeuwen, Jan, Series Editor, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Kobsa, Alfred, Series Editor, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Nierstrasz, Oscar, Series Editor, Pandu Rangan, C., Editorial Board Member, Sudan, Madhu, Series Editor, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Deshpande, R.D., Series Editor, Vardi, Moshe Y, Series Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Kurosu, Masaaki, editor, and Hashizume, Ayako, editor

Published
2024
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6. Addendum to: Improved CRISPR genome editing using small highly active and specific engineered RNA-guided nucleases

Author

Schmidt, Moritz J., Gupta, Ashish, Bednarski, Christien, Gehrig-Giannini, Stefanie, Richter, Florian, Pitzler, Christian, Gamalinda, Michael, Galonska, Christina, Takeuchi, Ryo, Wang, Kui, Reiss, Caroline, Dehne, Kerstin, Lukason, Michael J., Noma, Akiko, Park-Windhol, Cindy, Allocca, Mariacarmela, Kantardzhieva, Albena, Sane, Shailendra, Kosakowska, Karolina, Cafferty, Brian, Tebbe, Jan, Spencer, Sarah J., Munzer, Scott, Cheng, Christopher J., Scaria, Abraham, Scharenberg, Andrew M., Cohnen, André, and Coco, Wayne M.

Published
2023
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11. Public Procurement Comparative Guide

Author

Schmidt, Moritz

Subjects
Government spending policy -- Laws, regulations and rules, Government purchasing -- Laws, regulations and rules, Government regulation, Business, international, European Union -- Economic policy
Abstract

1 Legislative framework 1.1 What legislative and regulatory provisions govern public procurement in your jurisdiction? The essential laws and regulations that govern public tenders above the respective applicable EU thresholds [...]

Published
2024

14. Towards maximum acceleration of monoclonal antibody development: Leveraging transposase-mediated cell line generation to enable GMP manufacturing within 3 months using a stable pool

Author

Schmieder, Valerie, Fieder, Juergen, Drerup, Raphael, Gutierrez, Erik Arango, Guelch, Carina, Stolzenberger, Jessica, Stumbaum, Mihaela, Mueller, Volker Steffen, Higel, Fabian, Bergbauer, Martin, Bornhoefft, Kim, Wittner, Manuel, Gronemeyer, Petra, Braig, Christian, Huber, Michaela, Reisenauer-Schaupp, Anita, Mueller, Markus Michael, Schuette, Mark, Puengel, Sebastian, Lindner, Benjamin, Schmidt, Moritz, Schulz, Patrick, and Fischer, Simon

Published
2022
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21. Collaborative SLAM for ground robotics in search and rescue missions

Author

Ahlström, Sebastian, Schmidt, Moritz, Ahlström, Sebastian, and Schmidt, Moritz

Abstract

This thesis presents a distributed, collaborative simultaneous localization and mapping (C-SLAM) approach for embedded systems aiming to support search and rescue missions. A distributed C-SLAM system provides the robustness and flexibility to explore unpredictable environments reliably, even in the case of an unexpected loss of one or multiple of the robots. The approach is demonstrated on the Turtlebot4 and uses ROS2 as the development platform and assumes known initial positions of the robots for the map merging process. The robots in the C-SLAM system constantly share their progress to guarantee the workload can be distributed across all robots and a task can be completed even if individual robots fail. Our proposed system's efficiency is measured as the time needed to explore a given unknown environment. As a result, the C-SLAM system achieves an average of approximately 40 % improvement compared to a single robot system, even with the loss of robots during exploration. This emphasizes the robustness of the system but also the relevance and need for a better navigation system to take full advantage of the multi-robot nature of a C-SLAM system.

Published
2024

22. Host–Guest Complexation in Wide Bandgap Perovskite Solar Cells

Author

Ferdowsi, Parnian, primary, Bravetti, Gianluca, additional, Schmidt, Moritz C., additional, Ochoa-Martinez, Efrain, additional, Bijani, Shanti, additional, Rizzo, Aurora, additional, Colella, Silvia, additional, Steiner, Ullrich, additional, Ehrler, Bruno, additional, Kubicki, Dominik J., additional, and Milić, Jovana V., additional

Published
2024
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23. Improved CRISPR genome editing using small highly active and specific engineered RNA-guided nucleases

Author

Schmidt, Moritz J., Gupta, Ashish, Bednarski, Christien, Gehrig-Giannini, Stefanie, Richter, Florian, Pitzler, Christian, Gamalinda, Michael, Galonska, Christina, Takeuchi, Ryo, Wang, Kui, Reiss, Caroline, Dehne, Kerstin, Lukason, Michael J., Noma, Akiko, Park-Windhol, Cindy, Allocca, Mariacarmela, Kantardzhieva, Albena, Sane, Shailendra, Kosakowska, Karolina, Cafferty, Brian, Tebbe, Jan, Spencer, Sarah J., Munzer, Scott, Cheng, Christopher J., Scaria, Abraham, Scharenberg, Andrew M., Cohnen, André, and Coco, Wayne M.

Published
2021
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26. Host‐guest complexation in wide bandgap perovskite solar cells

Author

Ferdowsi, Parnian, primary, Bravetti, Gianluca, additional, Schmidt, Moritz C., additional, Ochoa-Martinez, Efrain, additional, Bijani, Shanti, additional, Rizzo, Aurora, additional, Calello, Silvia, additional, Steiner, Ullrich, additional, Ehrler, Bruno, additional, Kubicki, Dominik J., additional, and Milić, Jovana V., additional

Published
2023
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37. Implementierung und Analyse von Gradientenberechnungen in Quantenalgorithmen

Author

Schmidt, Moritz

Abstract

Quantencomputer bieten die theoretische Möglichkeit verschiedenste Probleme präziser und schneller zu lösen als klassische Computer. Auch im Gebiet des maschinellen Lernens, welches in den letzten Jahren in einem immer größer werdenden Spektrum an Disziplinen Anwendung findet, hofft man das Potenzial des Quantencomputers zu entfalten. Viele Algorithmen des maschinellen Lernens sind im Kern Optimierungsprobleme. Um eine möglichst genaue Lösung für diese Probleme zu finden, werden oft gradientenbasierte Verfahren als Kompromiss zwischen Rechenaufwand und Qualität der Lösung verwendet. In dieser Arbeit werden verschiedene Methoden zur Bestimmung von Gradienten von Quantenschaltkreisen analysiert und verglichen. Die abschließenden Ergebnisse zeigen, wie die inhärente Varianz von Messungen auf Quantencomputern zu einem Dilemma bei der Wahl von Hyperparametern von numerischen Verfahren führt, warum das analytische Parameter-Shift Verfahren einzelne Gradienten nicht nur exakt, sondern auch effizient berechnet und warum das SPSA Verfahren vor allem zur Gradientenberechnung auf großen Schaltkreisen mit vielen Parametern eine gute numerische Alternative sein kann. Dies kann als Entscheidungsgrundlage zur Gradientenberechnung für zukünftige Implementierungen von Algorithmen des maschinellen Lernens auf Quantencomputern dienen.

Published
2022
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40. Insights into the Electronic Structure of a U(IV) Amido and U(V) Imido Complex

Author

Koehler, Luisa, Patzschke, Michael, Bauters, Stephen, Vitova, Tonya, Butorin, Sergei, Kvashnina, Kristina O., Schmidt, Moritz, Stumpf, Thorsten, Maerz, Juliane, Koehler, Luisa, Patzschke, Michael, Bauters, Stephen, Vitova, Tonya, Butorin, Sergei, Kvashnina, Kristina O., Schmidt, Moritz, Stumpf, Thorsten, and Maerz, Juliane

Abstract

Reaction of the N-heterocylic carbene ligand (i)PrIm (L-1) and lithium bis(trimethylsilyl)amide (TMSA) as a base with UCl4 resulted in U(IV) and U(V) complexes. Uranium's +V oxidation state in (HL1)(2)[U(V)(TMSI)Cl-5] (TMSI=trimethylsilylimido) (2) was confirmed by HERFD-XANES measurements. Solid state characterization by SC-XRD and geometry optimisation of [U(IV)(L-1)(2)(TMSA)Cl-3] (1) indicated a silylamido ligand mediated inverse trans influence (ITI). The ITI was examined regarding different metal oxidation states and was compared to transition metal analogues by theoretical calculations.

Published
2022
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42. Reduced Barrier for Ion Migration in Mixed-Halide Perovskites

Author

McGovern, Lucie, Grimaldi, Gianluca, Futscher, Moritz H., Hutter, Eline M., Muscarella, Loreta A., Schmidt, Moritz C., Ehrler, Bruno, Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis, Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis, McGovern, Lucie [0000-0001-7263-5249], Grimaldi, Gianluca [0000-0002-2626-9118], Futscher, Moritz H [0000-0001-8451-5009], Hutter, Eline M [0000-0002-5537-6545], Muscarella, Loreta A [0000-0002-0559-4085], Ehrler, Bruno [0000-0002-5307-3241], Apollo - University of Cambridge Repository, and Apollo-University Of Cambridge Repository

Subjects
ion migration, Letter, Energy Engineering and Power Technology, 02 engineering and technology, mixed halide, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 7. Clean energy, 0104 chemical sciences, methylammonium, activation energy, transient ion drift, Electrochemistry, Materials Chemistry, halide, Chemical Engineering (miscellaneous), Electrical and Electronic Engineering, 0210 nano-technology, perovskite, phase segregation
Abstract

Halide alloying in metal halide perovskites is a useful tool for optoelectronic applications requiring a specific bandgap. However, mixed-halide perovskites show ion migration in the perovskite layer, leading to phase segregation and reducing the long-term stability of the devices. Here, we study the ion migration process in methylammonium-based mixed-halide perovskites with varying ratios of bromide to iodide. We find that the mixed-halide perovskites show two separate halide migration processes, in contrast to pure-phase perovskites, which show only a unique halide migration component. Compared to pure-halide perovskites, these processes have lower activation energies, facilitating ion migration in mixed versus pure-phase perovskites, and have a higher density of mobile ions. Under illumination, we find that the concentration of mobile halide ions is further increased and notice the emergence of a migration process involving methylammonium cations. Quantifying the ion migration processes in mixed-halide perovskites shines light on the key parameters allowing the design of bandgap-tunable perovskite solar cells with long-term stability.

Published
2021

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