@article{23023,
  abstract     = {{<jats:p>DNA origami nanostructures (DONs) are promising substrates for the single-molecule investigation of biomolecular reactions and dynamics by in situ atomic force microscopy (AFM). For this, they are typically immobilized on mica substrates by adding millimolar concentrations of Mg2+ ions to the sample solution, which enable the adsorption of the negatively charged DONs at the like-charged mica surface. These non-physiological Mg2+ concentrations, however, present a serious limitation in such experiments as they may interfere with the reactions and processes under investigation. Therefore, we here evaluate three approaches to efficiently immobilize DONs at mica surfaces under essentially Mg2+-free conditions. These approaches rely on the pre-adsorption of different multivalent cations, i.e., Ni2+, poly-l-lysine (PLL), and spermidine (Spdn). DON adsorption is studied in phosphate-buffered saline (PBS) and pure water. In general, Ni2+ shows the worst performance with heavily deformed DONs. For 2D DON triangles, adsorption at PLL- and in particular Spdn-modified mica may outperform even Mg2+-mediated adsorption in terms of surface coverage, depending on the employed solution. For 3D six-helix bundles, less pronounced differences between the individual strategies are observed. Our results provide some general guidance for the immobilization of DONs at mica surfaces under Mg2+-free conditions and may aid future in situ AFM studies.</jats:p>}},
  author       = {{Xin, Yang and Zargariantabrizi, Amir Ardalan and Grundmeier, Guido and Keller, Adrian}},
  issn         = {{1420-3049}},
  journal      = {{Molecules}},
  pages        = {{4798}},
  title        = {{{Magnesium-Free Immobilization of DNA Origami Nanostructures at Mica Surfaces for Atomic Force Microscopy}}},
  doi          = {{10.3390/molecules26164798}},
  volume       = {{26}},
  year         = {{2021}},
}

@article{23277,
  abstract     = {{We exploit a recently developed funnel control methodology for linear non-minimum phase systems to design an output error feedback controller for a nonlinear robotic manipulator, which is not minimum phase. We illustrate the novel control design by a numerical case study where we simulate end-effector output tracking of the robotic manipulator.}},
  author       = {{Berger, Thomas and Lanza, Lukas Johannes}},
  issn         = {{2405-8963}},
  journal      = {{IFAC-PapersOnLine}},
  pages        = {{178--185}},
  title        = {{{Output tracking for a non-minimum phase robotic manipulator}}},
  doi          = {{10.1016/j.ifacol.2021.06.074}},
  year         = {{2021}},
}

@inproceedings{23374,
  author       = {{Kummita, Sriteja and Piskachev, Goran and Spath, Johannes and Bodden, Eric}},
  booktitle    = {{2021 International Conference on Code Quality (ICCQ)}},
  title        = {{{Qualitative and Quantitative Analysis of Callgraph Algorithms for Python}}},
  doi          = {{10.1109/iccq51190.2021.9392986}},
  year         = {{2021}},
}

@inbook{23385,
  abstract     = {{Innovative self-correcting process control techniques which adapt to the initial geometric characteristics of the strip are a promising approach to fix the local varying distortion of coiled strips by optimizing the leveling process. This paper presents an innovative strategy to improve straightening of AHSS materials (1.4310). This implies optimized leveling, adding minimal plastic deformation, and, thus, strain hardening. Therefore, an “intelligent straightening machine” is being developed which will be presented. To operate an intelligent straightening machine a reliable online measurement of the surface defects is fundamentally essential. This paper describes an approach towards the measurement of a bent steel strip for an automatic straightening process. Therefore, various ways of measuring the bending curvature are investigated. Optical, tactile, and the electromagnetic induction testing MagnaTest are compared with each other. The bending measurement is linked to open-loop control, providing an optimal straightening result in regards of formability, leveling, and reduced strain hardening.}},
  author       = {{Bader, Fabian and Bathelt, Lukas and Djakow, Eugen and Homberg, Werner and Henke, Christian and Trächtler, Ansgar}},
  booktitle    = {{Forming the Future}},
  issn         = {{2367-1181}},
  title        = {{{Self-optimized, Intelligent Open-Loop-Controlled Steel Strip Straightening Machine for Advanced Formability}}},
  doi          = {{10.1007/978-3-030-75381-8_1}},
  year         = {{2021}},
}

@inproceedings{23388,
  abstract     = {{As one of the most popular programming languages, PYTHON has become a relevant target language for static analysis tools. The primary data structure for performing an inter-procedural static analysis is call-graph (CG), which links call sites to potential call targets in a program. There exists multiple algorithms for constructing callgraphs, tailored to specific languages. However, comparatively few implementations target PYTHON. Moreover, there is still lack of empirical evidence as to how these few algorithms perform in terms of precision and recall. This paper thus presents EVAL_CG, an extensible framework for comparative analysis of Python call-graphs. We conducted two experiments which run the CG algorithms on different Python programming constructs and real-world applications. In both experiments, we evaluate three CG generation frameworks namely, Code2flow, Pyan, and Wala. We record precision, recall, and running time, and identify sources of unsoundness of each framework. Our evaluation shows that none of the current CG construction frameworks produce a sound CG. Moreover, the static CGs contain many spurious edges. Code2flow is also comparatively slow. Hence, further research is needed to support CG generation for Python programs.}},
  author       = {{Kummita, Sriteja and Piskachev, Goran and Spaeth, Johannes and Bodden, Eric}},
  booktitle    = {{Proceedings of the 2021 International Conference on Code Quality (ICCQ)}},
  isbn         = {{978-1-7281-8477-7}},
  keywords     = {{Static Analysis, Callgraph Analysis, Python, Qualitative Analysis, Quantitative Analysis, Empirical Evaluation}},
  location     = {{Virtual}},
  title        = {{{Qualitative and Quantitative Analysis of Callgraph Algorithms for PYTHON}}},
  doi          = {{10.1109/ICCQ51190.2021.9392986}},
  year         = {{2021}},
}

@inproceedings{23391,
  abstract     = {{In der Softwareentwicklung werden Requirement Mining-Ansätze eingesetzt, um in der Ermittlung von Anforderungen Informationen aus Benutzerrezensionen zu extrahieren. Auf der Online-Plattform Amazon werden verschiedene mechatronische Produkte des B2C-Markts vertrieben und deren Benutzerrezensionen gesammelt. Aufgrund der Komplexität mechatronischer Produkte werden Defizite selten nachvollziehbar im Benutzer-Feedback dokumentiert. In diesem Beitrag wird die Forschungsfrage beantwortet, ob Requirement Mining-Ansätze auch in der Produktgenerationenentwicklung mechatronischer Produkte des B2C-Markts anwendbar sind. Etablierte Requirement Mining-Ansätze werden in einer Literaturstudie identifiziert und die Anwendbarkeit initial bewertet. Der vielversprechendste Ansatz wird für eine weitergehende Analyse ausgewählt. Hierzu wird ein Fallbeispiel untersucht, indem Benutzeranforderungen eines Staubsauger- Roboters ausgewertet werden. Die Ergebnisse zeigen, dass die Informationsqualität hoch ist und Anforderungsingenieure diese Informationen zur Dokumentation der Bedürfnisse der Benutzer verwenden können.}},
  author       = {{Gräßler, Iris and Preuß, Daniel}},
  booktitle    = {{Digital-Fachtagung VDI Mechatronik 2021; 24. - 25. Mrz. 2021}},
  editor       = {{Bertram, Torsten and Corves, Burkhard and Janschek, Klaus and Rinderknecht, Stephan}},
  pages        = {{68--73}},
  title        = {{{Anwendbarkeit von Requirement Mining in Benutzerrezensionen für die Entwicklung mechatronischer Produkte im B2C-Markt}}},
  year         = {{2021}},
}

@article{21679,
  abstract     = {{<jats:p>Three-dimensional modelling enables to determine the in-plane material flow in asymmetrical situation. Thus, the distortion of the sheets to be joined can be characterized more exactly. This study shows a method for building up a three-dimensional shear-clinching framework without damage criteria. In fact, the die-sided sheet in shear-clinching was designed as a pre-punched sheet and slugs. The material separation in the die-sided joining partner, which in two-dimensional simulation is often described by macro- and micromechanical fracture criteria, was realised in this study based on a defined contact condition. By means of a shear-cutting simulation, a correlation between the break angle and the separation stress was determined, which was used as a separation criterion in the shear-clinching simulation. The separation line was confirmed using post-particles. To validate this model, the results of the simulation using a quadratic single-point specimen were compared to the experiments with respect to the distortion of the joining partner. In general, the built three-dimensional framework provides for further tool developments with regard to the reduction of distortion in shear-clinching.</jats:p>}},
  author       = {{Han, Daxin and Yang, Chen and Meschut, Gerson}},
  journal      = {{ESAFORM 2021}},
  title        = {{{A method for three-dimensional modelling of the shear-clinching process}}},
  doi          = {{10.25518/esaform21.1948}},
  year         = {{2021}},
}

@inproceedings{21716,
  author       = {{Schmolke, Tobias and Krüger, Christopher and Merdivan, David and Meschut, Gerson and Urban, Peter}},
  location     = {{Bad Nauheim}},
  title        = {{{Development of a Leak Test Method for the Joining technology of Functionally Integrated Lightweight Battery Housings for Electric Vehicles}}},
  year         = {{2021}},
}

@inproceedings{21717,
  author       = {{Schmolke, Tobias and Teutenberg, Dominik and Meschut, Gerson and Meinderink, Dennis and Koch, Leon  and Ebbert, Christoph and Grundmeier, Guido}},
  location     = {{Online Event}},
  title        = {{{Entwicklung einer Methode zur Bewertung einer stahlintensiven Mischbau-Klebverbindung eines Batteriegehäuses gegenüber mechanischer und medialer Belastung und Berücksichtigung der Interphasenstruktur}}},
  year         = {{2021}},
}

@inproceedings{21718,
  author       = {{Fischer, Elena and Schmolke, Tobias and Chudalla, Nick and Teutenberg, Dominik and Meschut, Gerson}},
  location     = {{Online Event}},
  title        = {{{Auslegungsmethode für Klebverbindungen mit KTL-beschichteten Fügeteilen und polymeren, faserverstärkten Werkstoffen – Kleben auf KTL}}},
  year         = {{2021}},
}

@inproceedings{21723,
  author       = {{Müller, Stefanie Jutta Marianne and Buchholz, Anna and Flath, Beate and Kundisch, Dennis and Momen Pour Tafreshi, Maryam}},
  location     = {{Virtual Conference/Workshop}},
  title        = {{{The Agony of Finding the Right Pricing Policy for Cultural Institutions: Addressing Economic Viability and Cultural Participation through Innovative Pricing}}},
  year         = {{2021}},
}

@inproceedings{21727,
  abstract     = {{Platform-based business models underlie the success of many of today’s largest, fastest-growing, and most disruptive companies. Despite the success of prominent examples, such as Uber and Airbnb, creating a profitable platform ecosystem presents a key challenge for many companies across all industries. Although research provides knowledge about platforms’ different value drivers (e.g., network effects), companies that seek to transform their current business model into a platform-based one lack an artifact to reduce knowledge boundaries, collaborate effectively, and cope with the complexities and dynamics of platform ecosystems. We address this challenge by developing two artifacts and combining research from variability modeling, business model dependencies, and system dynamics. This paper presents a design science research approach to develop the platform ecosystem modeling language and the platform ecosystem development tool that support researcher and practitioner by visualizing and simulating platform ecosystems. }},
  author       = {{Vorbohle, Christian and Gottschalk, Sebastian}},
  booktitle    = {{Proceedings of the 29th European Conference on Information Systems (ECIS)}},
  keywords     = {{Platform Ecosystems, Platform Ecosystem Modeling Language, Platform Ecosystem Development Tool, Business Models, Design Science}},
  location     = {{Virtual Conference/Workshop}},
  publisher    = {{AIS}},
  title        = {{{Towards Visualizing and Simulating Business Models in Dynamic Platform Ecosystems }}},
  year         = {{2021}},
}

@inproceedings{21799,
  author       = {{Kutzner, K. and Stadtländer, M. and Seutter, Janina and Kundisch, Dennis and Knackstedt, R.}},
  booktitle    = {{Proceedings of the 29th European Conference on Information Systems (ECIS)}},
  location     = {{Virtual Conference/Workshop}},
  title        = {{{”Sorry, Too Much Information” Designing Online Review Systems that Support Information Search and Processing}}},
  year         = {{2021}},
}

@book{21800,
  author       = {{Sander, Sascha and Bobbert, Mathias and Meschut, Gerson}},
  isbn         = {{978-3-662-62832-4}},
  pages        = {{332}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Intrinsische  Hybridverbunde für  Leichtbautragstrukturen}}},
  year         = {{2021}},
}

@article{21808,
  abstract     = {{Modern services consist of interconnected components,e.g., microservices in a service mesh or machine learning functions in a pipeline. These services can scale and run across multiple network nodes on demand. To process incoming traffic, service components have to be instantiated and traffic assigned to these instances, taking capacities, changing demands, and Quality of Service (QoS) requirements into account. This challenge is usually solved with custom approaches designed by experts. While this typically works well for the considered scenario, the models often rely on unrealistic assumptions or on knowledge that is not available in practice (e.g., a priori knowledge).

We propose DeepCoord, a novel deep reinforcement learning approach that learns how to best coordinate services and is geared towards realistic assumptions. It interacts with the network and relies on available, possibly delayed monitoring information. Rather than defining a complex model or an algorithm on how to achieve an objective, our model-free approach adapts to various objectives and traffic patterns. An agent is trained offline without expert knowledge and then applied online with minimal overhead. Compared to a state-of-the-art heuristic, DeepCoord significantly improves flow throughput (up to 76%) and overall network utility (more than 2x) on realworld network topologies and traffic traces. It also supports optimizing multiple, possibly competing objectives, learns to respect QoS requirements, generalizes to scenarios with unseen, stochastic traffic, and scales to large real-world networks. For reproducibility and reuse, our code is publicly available.}},
  author       = {{Schneider, Stefan Balthasar and Khalili, Ramin and Manzoor, Adnan and Qarawlus, Haydar and Schellenberg, Rafael and Karl, Holger and Hecker, Artur}},
  journal      = {{Transactions on Network and Service Management}},
  keywords     = {{network management, service management, coordination, reinforcement learning, self-learning, self-adaptation, multi-objective}},
  publisher    = {{IEEE}},
  title        = {{{Self-Learning Multi-Objective Service Coordination Using Deep Reinforcement Learning}}},
  doi          = {{10.1109/TNSM.2021.3076503}},
  year         = {{2021}},
}

@inproceedings{21812,
  author       = {{Vorbohle, Christian and Szopinski, Daniel and Kundisch, Dennis}},
  booktitle    = {{Proceedings of the 29th European Conference on Information Systems (ECIS)}},
  location     = {{Virtual Conference/Workshop}},
  title        = {{{Toward Understanding the Complexity of Business Models – A Taxonomy of Business Model Dependencies}}},
  year         = {{2021}},
}

@article{21815,
  abstract     = {{Sowohl Berufsethos als auch Berufswahlmotivation tragen zu relevanten lern-, leistungs- und laufbahnbedingenden Prozessen eines Individuums bei und prägen dessen Lebensverlauf wesentlich. Während die Berufswahlmotivation bereits verstärkt im wirtschaftspädagogischen Kontext untersucht wurde, existieren zum Berufsethos von Wirtschaftspädagog*innen nur vereinzelt empirische Studien. So ist beispielsweise wenig darüber bekannt, wie das Berufsethos von Wirtschaftspädagog*innen in der Ausbildungsphase ausgeprägt ist. Auch die Erforschung des Zusammenhangs zwischen den Konstrukten des Berufsethos und der Berufswahlmotivation blieb bisher unbeachtet. In diesem Beitrag wird entsprechend dieses Forschungsdesiderats untersucht, wie das anfänglich ausgebildete Berufsethos von Wirtschaftspädagogikstudierenden in der universitären Ausbildung ausgeprägt ist, ob sich die Ausprägung nach dem angegebenen Berufswunsch der Studierenden unterscheidet und inwiefern das anfänglich ausgeprägte Berufsethos mit der Berufswahlmotivation von Studierenden zusammenhängt. Dafür wurden im Wintersemester 2019/20 an zwölf deutschen Universitäten insgesamt 879 Wirtschaftspädagogikstudierende schriftlich befragt. Die Ergebnisse zeigen, dass das anfängliche Berufsethos der Befragten bereits in der universitären Ausbildungsphase relativ stark ausgeprägt ist. Weiterhin ist zu erkennen, dass das Berufsethos bei angehenden Wirtschaftspädagog*innen, die den Berufswunsch Lehrkraft haben, ausgeprägter ist als bei Wirtschaftspädagogikstudierenden, die eine Tätigkeit außerhalb des Schuldienstes anstreben bzw. noch unentschlossen sind. Letztlich kann aufgezeigt werden, dass grundsätzlich positive Zusammenhänge zwischen dem anfänglich ausgeprägten Berufsethos und der Berufswahlmotivation von angehenden Wirtschaftspädagog*innen bestehen.}},
  author       = {{Goller, Michael and Ziegler, Simone}},
  issn         = {{1618-8543}},
  journal      = {{bwp@ Spezial}},
  keywords     = {{Berufsethos, Berufswahlmotivation, Wirtschaftspädagogik, Studierende}},
  pages        = {{1--28}},
  title        = {{{Zum Zusammenhang von Berufsethos und der Berufswahlmotivation angehender Wirtschaftspädagog*innen}}},
  volume       = {{18}},
  year         = {{2021}},
}

@article{21820,
  abstract     = {{<jats:p>The reduction of high-dimensional systems to effective models on a smaller set of variables is an essential task in many areas of science. For stochastic dynamics governed by diffusion processes, a general procedure to find effective equations is the conditioning approach. In this paper, we are interested in the spectrum of the generator of the resulting effective dynamics, and how it compares to the spectrum of the full generator. We prove a new relative error bound in terms of the eigenfunction approximation error for reversible systems. We also present numerical examples indicating that, if Kramers–Moyal (KM) type approximations are used to compute the spectrum of the reduced generator, it seems largely insensitive to the time window used for the KM estimators. We analyze the implications of these observations for systems driven by underdamped Langevin dynamics, and show how meaningful effective dynamics can be defined in this setting.</jats:p>}},
  author       = {{Nüske, Feliks and Koltai, Péter and Boninsegna, Lorenzo and Clementi, Cecilia}},
  issn         = {{1099-4300}},
  journal      = {{Entropy}},
  title        = {{{Spectral Properties of Effective Dynamics from Conditional Expectations}}},
  doi          = {{10.3390/e23020134}},
  year         = {{2021}},
}

@article{21823,
  author       = {{Han, Daxin and Yang, Keke and Meschut, Gerson}},
  issn         = {{0924-0136}},
  journal      = {{Journal of Materials Processing Technology}},
  title        = {{{Mechanical joining of glass fibre reinforced polymer (GFRP) through an innovative solid self-piercing rivet}}},
  doi          = {{10.1016/j.jmatprotec.2021.117182}},
  year         = {{2021}},
}

@book{21825,
  editor       = {{Tönnies, Merle and Schlieper, Hendrick}},
  publisher    = {{Harrassowitz}},
  title        = {{{Gattung und Geschlecht: Konventionen und Transformationen eines Paradigmas}}},
  volume       = {{21 }},
  year         = {{2021}},
}