@inproceedings{20693,
  abstract     = {{In practical, large-scale networks, services are requested
by users across the globe, e.g., for video streaming.
Services consist of multiple interconnected components such as
microservices in a service mesh. Coordinating these services
requires scaling them according to continuously changing user
demand, deploying instances at the edge close to their users,
and routing traffic efficiently between users and connected instances.
Network and service coordination is commonly addressed
through centralized approaches, where a single coordinator
knows everything and coordinates the entire network globally.
While such centralized approaches can reach global optima, they
do not scale to large, realistic networks. In contrast, distributed
approaches scale well, but sacrifice solution quality due to their
limited scope of knowledge and coordination decisions.

To this end, we propose a hierarchical coordination approach
that combines the good solution quality of centralized approaches
with the scalability of distributed approaches. In doing so, we divide
the network into multiple hierarchical domains and optimize
coordination in a top-down manner. We compare our hierarchical
with a centralized approach in an extensive evaluation on a real-world
network topology. Our results indicate that hierarchical
coordination can find close-to-optimal solutions in a fraction of
the runtime of centralized approaches.}},
  author       = {{Schneider, Stefan Balthasar and Jürgens, Mirko and Karl, Holger}},
  booktitle    = {{IFIP/IEEE International Symposium on Integrated Network Management (IM)}},
  keywords     = {{network management, service management, coordination, hierarchical, scalability, nfv}},
  location     = {{Bordeaux, France}},
  publisher    = {{IFIP/IEEE}},
  title        = {{{Divide and Conquer: Hierarchical Network and Service Coordination}}},
  year         = {{2021}},
}

@inproceedings{22156,
  abstract     = {{Word embedding models reflect bias towards genders, ethnicities, and other social groups present in the underlying training data. Metrics such as ECT, RNSB, and WEAT quantify bias in these models based on predefined word lists representing social groups and bias-conveying concepts. How suitable these lists actually are to reveal bias - let alone the bias metrics in general - remains unclear, though. In this paper, we study how to assess the quality of bias metrics for word embedding models. In particular, we present a generic method, Bias Silhouette Analysis (BSA), that quantifies the accuracy and robustness of such a metric and of the word lists used. Given a biased and an unbiased reference embedding model, BSA applies the metric systematically for several subsets of the lists to the models. The variance and rate of convergence of the bias values of each model then entail the robustness of the word lists, whereas the distance between the models' values gives indications of the general accuracy of the metric with the word lists. We demonstrate the behavior of BSA on two standard embedding models for the three mentioned metrics with several word lists from existing research.}},
  author       = {{Spliethöver, Maximilian and Wachsmuth, Henning}},
  booktitle    = {{Proceedings of the Thirtieth International Joint Conference on Artificial Intelligence, IJCAI-21}},
  location     = {{Online}},
  pages        = {{552--559}},
  title        = {{{Bias Silhouette Analysis: Towards Assessing the Quality of Bias Metrics for Word Embedding Models}}},
  doi          = {{10.24963/ijcai.2021/77}},
  year         = {{2021}},
}

@article{22205,
  abstract     = {{In January 2021, the GameStop stock was the epicenter of the first case of predatory trading initiated by retail investors. We use brokerage accounts to study who participated in this GameStop frenzy and how they performed. We investigate the extent to which investors’ personal and trading characteristics differ from the general population of retail investors. GameStop traders had a history of investing in speculative instruments, including stocks with lottery-like features. They were also more likely to close their positions before the peak of the bubble. At the onset of the frenzy, numerous retail investors also shorted GameStop. Overall, our results indicate that the GameStop frenzy was not a pure digital protest against Wall Street but speculative trading by a group of retail investors, in line with their prior high-risk trading behavior.}},
  author       = {{Hasso, Tim and Müller, Daniel and Pelster, Matthias and Warkulat, Sonja}},
  journal      = {{Finance Research Letters}},
  keywords     = {{Predatory Trading, Retail Investors, Trading Behavior}},
  title        = {{{Who participated in the GameStop frenzy? Evidence from brokerage accounts}}},
  doi          = {{10.1016/j.frl.2021.102140}},
  year         = {{2021}},
}

@article{22215,
  abstract     = {{Topological states of light represent counterintuitive optical modes localized at boundaries of finite-size optical structures that originate from the properties of the bulk. Being defined by bulk properties, such boundary states are insensitive to certain types of perturbations, thus naturally enhancing robustness of photonic circuitries. Conventionally, the N-dimensional bulk modes correspond to (N – 1)-dimensional boundary states. The higher-order bulk-boundary correspondence relates N-dimensional bulk to boundary states with dimensionality reduced by more than 1. A special interest lies in miniaturization of such higher-order topological states to the nanoscale. Here, we realize nanoscale topological corner states in metasurfaces with C6-symmetric honeycomb lattices. We directly observe nanoscale topology-empowered edge and corner localizations of light and enhancement of light–matter interactions via a nonlinear imaging technique. Control of light at the nanoscale empowered by topology may facilitate miniaturization and on-chip integration of classical and quantum photonic devices.}},
  author       = {{Kruk, Sergey S. and Gao, Wenlong and Choi, Duk-Yong and Zentgraf, Thomas and Zhang, Shuang and Kivshar, Yuri}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{11}},
  pages        = {{4592–4597}},
  publisher    = {{ACS}},
  title        = {{{Nonlinear Imaging of Nanoscale Topological Corner States}}},
  doi          = {{10.1021/acs.nanolett.1c00449}},
  volume       = {{21}},
  year         = {{2021}},
}

@article{22450,
  abstract     = {{We realize and investigate a nonlinear metasurface taking advantage of intersubband transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing to huge band offsets, the structures offer resonant transitions in the telecom window around 1.55 µm. These heterostructures are functionalized with an array of plasmonic antennas featuring cross-polarized resonances at these near-infrared wavelengths and their second harmonic. This kind of nonlinear metasurface allows for substantial second-harmonic generation at normal incidence which is completely absent for an antenna array without the multi-quantum well structure underneath. While the second harmonic is originally radiated only into the plane of the quantum wells, a proper geometrical arrangement of the plasmonic elements permits the redirection of the second-harmonic light to free-space radiation, which is emitted perpendicular to the surface.}},
  author       = {{Mundry, Jan and Spreyer, Florian and Jmerik, Valentin and Ivanov, Sergey and Zentgraf, Thomas and Betz, Markus}},
  issn         = {{2159-3930}},
  journal      = {{Optical Materials Express}},
  number       = {{7}},
  publisher    = {{OSA}},
  title        = {{{Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays}}},
  doi          = {{10.1364/ome.426236}},
  volume       = {{11}},
  year         = {{2021}},
}

@article{22523,
  abstract     = {{The containment of COVID-19 critically hinges on individuals’ behavior. We investigate how individuals react to variations in COVID-19 reporting. Using a survey, we elicit individuals' perceived infection risk given various COVID-19 metrics (e.g., confirmed cases, reproduction rate, or case-fatality ratio). We proxy individuals' risk perception with their willingness to pay for the participation in everyday life and amusements events. We find that participants react to different COVID-19 metrics with varying sensitivity. We observe a saturation of sensitivity for several measures at critical limits used in the political discussion, making our results highly relevant for policy makers in their efforts to direct individuals to adhere to hygienic etiquette and social distancing guidelines.}},
  author       = {{Warkulat, Sonja and Krull, Sebastian and Ortmann, Regina and Klocke, Nina and Pelster, Matthias}},
  journal      = {{Covid Economics}},
  keywords     = {{COVID-19 reporting, willingness to pay, willingness to accept}},
  number       = {{83}},
  pages        = {{183--205}},
  publisher    = {{CEPR Press}},
  title        = {{{COVID-19 reporting and willingness to pay for leisure activities}}},
  year         = {{2021}},
}

@article{22723,
  author       = {{Yoon, Gwanho and Tanaka, Takuo and Zentgraf, Thomas and Rho, Junsuk}},
  issn         = {{0022-3727}},
  journal      = {{Journal of Physics D: Applied Physics}},
  title        = {{{Recent progress on metasurfaces: applications and fabrication}}},
  doi          = {{10.1088/1361-6463/ac0faa}},
  volume       = {{54}},
  year         = {{2021}},
}

@inproceedings{22913,
  author       = {{Hüllermeier, Eyke and Mohr, Felix and Tornede, Alexander and Wever, Marcel Dominik}},
  location     = {{Bilbao (Virtual)}},
  title        = {{{Automated Machine Learning, Bounded Rationality, and Rational Metareasoning}}},
  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{30099,
  author       = {{d’Agostini, Franca and Ficara, Elena}},
  issn         = {{0144-5340}},
  journal      = {{History and Philosophy of Logic}},
  keywords     = {{History and Philosophy of Science, History}},
  pages        = {{1--24}},
  publisher    = {{Informa UK Limited}},
  title        = {{{Hegel’s Interpretation of the Liar Paradox}}},
  doi          = {{10.1080/01445340.2021.1927455}},
  year         = {{2021}},
}

@article{30097,
  author       = {{Ficara, Elena}},
  journal      = {{Fichte-Studien}},
  pages        = {{333 -- 352}},
  title        = {{{‘Transcendental’ in Kant and Fichte. A Conceptual Shift and its Philosophical Meaning}}},
  volume       = {{49}},
  year         = {{2021}},
}

@article{30098,
  author       = {{Ficara, Elena}},
  journal      = {{History and Philosophy of Logic }},
  number       = {{3}},
  pages        = {{281 -- 296}},
  title        = {{{The Birth of Dialetheism}}},
  volume       = {{42}},
  year         = {{2021}},
}

@article{28255,
  abstract     = {{Topological photonic crystals (TPhCs) provide robust manipulation of light with built-in immunity to fabrication tolerances and disorder. Recently, it was shown that TPhCs based on weak topology with a dislocation inherit this robustness and further host topologically protected lower-dimensional localized modes. However, TPhCs with weak topology at optical frequencies have not been demonstrated so far. Here, we use scattering-type scanning near-field optical microscopy to verify mid-bandgap zero-dimensional light localization close to 100 THz in a TPhC with nontrivial Zak phase and an edge dislocation. We show that because of the weak topology, differently extended dislocation centers induce similarly strong light localization. The experimental results are supported by full-field simulations. Along with the underlying fundamental physics, our results lay a foundation for the application of TPhCs based on weak topology in active topological nanophotonics, and nonlinear and quantum optic integrated devices because of their strong and robust light localization.}},
  author       = {{Lu, Jinlong and Wirth, Konstantin G. and Gao, Wenlong and Heßler, Andreas and Sain, Basudeb and Taubner, Thomas and Zentgraf, Thomas}},
  issn         = {{2375-2548}},
  journal      = {{Science Advances}},
  number       = {{49}},
  title        = {{{Observing 0D subwavelength-localized modes at ~100 THz protected by weak topology}}},
  doi          = {{10.1126/sciadv.abl3903}},
  volume       = {{7}},
  year         = {{2021}},
}

@inproceedings{27381,
  abstract     = {{Graph neural networks (GNNs) have been successfully applied in many structured data domains, with applications ranging from molecular property prediction to the analysis of social networks. Motivated by the broad applicability of GNNs, we propose the family of so-called RankGNNs, a combination of neural Learning to Rank (LtR) methods and GNNs. RankGNNs are trained with a set of pair-wise preferences between graphs, suggesting that one of them is preferred over the other. One practical application of this problem is drug screening, where an expert wants to find the most promising molecules in a large collection of drug candidates. We empirically demonstrate that our proposed pair-wise RankGNN approach either significantly outperforms or at least matches the ranking performance of the naive point-wise baseline approach, in which the LtR problem is solved via GNN-based graph regression.}},
  author       = {{Damke, Clemens and Hüllermeier, Eyke}},
  booktitle    = {{Proceedings of The 24th International Conference on Discovery Science (DS 2021)}},
  editor       = {{Soares, Carlos and Torgo, Luis}},
  isbn         = {{9783030889418}},
  issn         = {{0302-9743}},
  keywords     = {{Graph-structured data, Graph neural networks, Preference learning, Learning to rank}},
  location     = {{Halifax, Canada}},
  pages        = {{166--180}},
  publisher    = {{Springer}},
  title        = {{{Ranking Structured Objects with Graph Neural Networks}}},
  doi          = {{10.1007/978-3-030-88942-5}},
  volume       = {{12986}},
  year         = {{2021}},
}

@article{30924,
  abstract     = {{<jats:p>Wood fiber reinforcement of plastics is almost limited to polypropylene, polyethylene, polyvinyl chloride and polystyrene. Wood fiber reinforcement of thermoplastic polyurethanes (TPU) is a new research field and paltry studied scientifically. Wood fiber reinforcement can carry out synergistic effects between sustainability, material or product price reduction, improved mechanical properties at high elongation, and brilliant appearance and haptics. In order to evaluate to what extent the improvement of mechanical properties depend on material-specific parameters (fiber type, fiber content) and on process-specific parameters (holding pressure, temperature control and injection speed), differently filled compounds were injection molded according to a partial factorial test plan and subjected to characterizing test procedures (tensile test, Shore hardness and notched impact test). Tensile strength showed significant dependence on barrel temperature, fiber type and interaction between holding pressure and barrel temperature in the region of interest. Young’s modulus can be influenced by fiber content but not by fiber type. Notched impact strength showed a significant influence of cylinder temperature, fiber content, fiber type and the interaction between cylinder temperature and fiber content in the region of interest. Shore hardness is related to fiber content and the interaction between mold temperature and injection flow rate. Our results show not only that wood-filled TPU can be processed very well by injection molding, but also that the mechanical properties depend significantly on temperature control in the injection-molding process. Moreover, considering the significant reinforcing effect of the wood fibers, a good fiber-matrix adhesion can be assumed.</jats:p>}},
  author       = {{Moritzer, Elmar and Richters, Maximilian}},
  issn         = {{2504-477X}},
  journal      = {{Journal of Composites Science}},
  keywords     = {{Engineering (miscellaneous), Ceramics and Composites}},
  number       = {{12}},
  publisher    = {{MDPI AG}},
  title        = {{{Injection Molding of Wood-Filled Thermoplastic Polyurethane}}},
  doi          = {{10.3390/jcs5120316}},
  volume       = {{5}},
  year         = {{2021}},
}

@article{23944,
  author       = {{Moritzer, Elmar and Richters, Maximilian}},
  journal      = {{Journal of Applied Polymer Science}},
  publisher    = {{Wiley }},
  title        = {{{Characterization of wood-filled thermoplastic polyurethane for the injection modling process}}},
  year         = {{2021}},
}

@article{23948,
  author       = {{Moritzer, Elmar and Richters, Maximilian and Hillemeyer, Johannes and Krassmann, Dimitri}},
  journal      = {{Joining Plastics}},
  title        = {{{Mit dem Schraubblind-Durchsetznieten Metallteile mit Composites bei einseitiger Zugänglichkeit verbinden}}},
  year         = {{2021}},
}

@article{23886,
  author       = {{Kastein, Mara and Finke, Josefine and Horwath, Ilona}},
  issn         = {{2196-3886}},
  journal      = {{Voluntaris}},
  pages        = {{135--151}},
  title        = {{{Florian braucht Mehmet mehr als umgekehrt: Herausforderungen und Potenziale für Inklusion in der Freiwilligen Feuerwehr}}},
  doi          = {{10.5771/2196-3886-2021-1-135}},
  year         = {{2021}},
}

@misc{24446,
  booktitle    = {{Erscheinungsformen, Erklärungsversuche und Gegenstrategien, GENDER }},
  editor       = {{Kastein, Mara and Horwath, Ilona and Finke, Josefine and Duglar Sezer, Nilgün}},
  pages        = {{92--107}},
  title        = {{{Ohne den ‚Weissen Mann‘ würden Leute wie Sie noch in Erdhöhlen wohnen.“ - Die Markierung der Unmarkierten}}},
  doi          = {{doi.org/10.3224/84742528.01}},
  year         = {{2021}},
}

@inbook{24477,
  author       = {{Horwath, Ilona and Kastein, Mara and Duglar Sezer, Nilgün}},
  booktitle    = {{Feuerwehren im Spiegel gesellschaftlicher Diversität}},
  editor       = {{Duglar Sezer, Nilgün and Horwath, Ilona and Kastein, Mara}},
  title        = {{{Feuerwehren im Spiegel gesellschaftlicher Diversität}}},
  year         = {{2021}},
}