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See detailHumanities als Rekonstrukteure des Rechts
Becker, Katrin UL

in the Ends of the Humanities (in press)

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See detailCovid19 et la re-présentation du corps
Becker, Katrin UL

in Tour du monde de la Covid-19 (in press)

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See detailCorona und die krisenhafte Wiederkehr des Verdrängten
Becker, Katrin UL

in Zeitschrift für Kulturphilosophie (in press)

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See detailSmall in size, great in significance: conspicilla and perspicilla in the visual arts of the Low Countries around 1600
Koeleman, Floor UL

Scientific Conference (2021, July)

A largely forgotten constcamer painting from the early seventeenth century shows eyeglasses and a telescope in close proximity. The inclusion of these extensions of sight in The Five Senses of the Musée ... [more ▼]

A largely forgotten constcamer painting from the early seventeenth century shows eyeglasses and a telescope in close proximity. The inclusion of these extensions of sight in The Five Senses of the Musée Magnin (Dijon) seems to allude to the implicit link between the two. As tools to observe with and through, these instruments visualize the limits of human perception and the ability to alter the scale of the visible world. The Five Senses was created in Antwerp around the same time the telescope first appeared in textual sources, namely 1608. However, the optical instrument is likely to have existed for years by then. This paper investigates if any references to the telescope in the visual arts predate the first written evidence of its invention. For artists the early telescope was probably not that challenging an object to represent. The exterior, a simple tube characterized by a diaphragm, housed two lenses made by the same glass industry that manufactured eyeglasses. This paper takes a closer look at the imagery of eyeglasses and telescopes, depicted in the visual arts of the late sixteenth and early seventeenth centuries. The meaning assigned to these instruments can be inferred from the context in which they are presented and their relative scale. Together eyeglasses and telescopes feature prominently in constcamer paintings dedicated to visual perception, understood both physically and metaphysically. While the exact date of creation remains subject to debate, The Five Senses probably contains the earliest known depiction of a telescope – true to scale. [less ▲]

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See detailDelivering value for money? The problematic accountability of the European Stability Mechanism
Howarth, David UL; Spendzharova, Aneta

in Stevenson, Paul; Sánchez-Barrueco, María-Luisa; Aden, Hartmut (Eds.) Financial Accountability in the European Union (2021)

This chapter undertakes a critical assessment of the accountability of one recent institutional addition to the Euro area governance system – the European Stability Mechanism (ESM). Regarding Euro area ... [more ▼]

This chapter undertakes a critical assessment of the accountability of one recent institutional addition to the Euro area governance system – the European Stability Mechanism (ESM). Regarding Euro area governance in general, Dawson (2015: 976) warns that many new structures designed in response to the Euro area crisis ‘depart from the mechanisms of legal and political accountability present in previous forms of EU decision-making without substituting new models of accountability in their place’. By examining in greater detail the financial accountability mechanisms applicable to an important new Euro area body, we identify accountability gaps and shortcomings in the complex EU architecture of financial control. [less ▲]

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See detailEinleitung
Huemer, Birgit UL; Doleschal, Ursula; Steiner, Jennifer et al

in Huemer, Birgit et al. (Ed.) Schreibwissenschaft - eine neue Disziplin. Diskursübergreifende Perspektiven (2021)

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See detailSchreibwissenschaft - eine neue Disziplin. Diskursübergreifende Perspektiven
Huemer, Birgit UL; Doleschal, Ursula; Wiederkehr, Ruth et al

Book published by Böhlau (2021)

Das Thema Schreiben ist in allen wissenschaftlichen Disziplinen zentral. Forschende unterschiedlicher Diskursgemeinschaften haben Schreibpraxis und Texte untersucht. Dabei haben sich Bezeichnungen ... [more ▼]

Das Thema Schreiben ist in allen wissenschaftlichen Disziplinen zentral. Forschende unterschiedlicher Diskursgemeinschaften haben Schreibpraxis und Texte untersucht. Dabei haben sich Bezeichnungen, Konzepte und Forschungsansätze parallel entwickelt. Einerseits bereitet diese Parallelität Schwierigkeiten für die Verständigung über das Schreiben, andererseits kann sie als Gewinn gesehen werden, da sich aus ihr diverse methodische und theoretische Zugänge ergeben, die einander ergänzen. Der Sammelband nimmt diese Perspektivenvielfalt in den Blick und profiliert damit die sich entwickelnde Schreibwissenschaft. Ziel ist es, ein gemeinsames Verständnis einer deutschsprachigen Schreibwissenschaft zu entwickeln, das unterschiedliche Fachrichtungen und Ansätze zusammenführt. [less ▲]

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See detailKant's supposed realism about things-in-themselves
Heidemann, Dietmar UL

in Serck-Hanssen, Camila (Ed.) Proceedings of the 13th International Kant Congress ‘The Court of Reason’ (Oslo, 6-9 August 2019) (2021)

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See detailTackling educational inequalities using school effectiveness measures
Levy, Jessica UL; Mussack, Dominic UL; Brunner, Martin et al

Scientific Conference (2020, November 11)

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See detailPerformance of lime-metakaolin pastes using gravel wash mud (GWM)
Thapa, Vishojit Bahadur UL; Waldmann, Daniele UL

in Cement and Concrete Composites (2020), 114(103772),

The performance of ternary binders using lime, metakaolin (MK) and gravel wash mud (GWM) powders is studied for the development of novel lime-pozzolan pastes. This study examines the influence of varying ... [more ▼]

The performance of ternary binders using lime, metakaolin (MK) and gravel wash mud (GWM) powders is studied for the development of novel lime-pozzolan pastes. This study examines the influence of varying mixture proportions using different types and compositions of lime powders and GWM at different treatment levels on the mechanical properties of lime-MK-GWM pastes. Various characterisation techniques including particle size distribution (PSD), X-ray fluorescence (XRF), X-ray diffraction (XRD), compressive strength tests, simultaneous thermal analysis (STA) and scanning electron microscopy (SEM), were applied on the different raw materials, respectively, on the hardened pastes to determine the reaction kinetics, the resulting microstructure and the mechanical performances of the lime-MK-GWM binder systems. Higher strength-enhancing contributions of thermally treated GWM powders (calcined at 850°C) leading to compressive strengths up to 18 MPa were confirmed and the strength-based evaluations revealed that hydrated lime-based pastes achieved higher mechanical performances than hydraulic lime-based binder systems. [less ▲]

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See detailOn the Random Access Procedure of NB-IoT Non-Terrestrial Networks
Kodheli, Oltjon UL; Maturo, Nicola UL; Chatzinotas, Symeon UL et al

Scientific Conference (2020, October 20)

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See detailBuilding up Explainability in Multi-layer Perceptrons for Credit Risk Modeling
Sharma, Rudrani; Schommer, Christoph UL; Vivarelli, Nicolas

in Sharma, Rudrani (Ed.) Building up Explainability in Multi-layer Perceptrons for Credit Risk Modeling (2020, October 09)

Granting loans is one of the major concerns of financial institutions due to the risks of default borrowers. Default prediction by the neural networks is a popular technique for credit risk modeling ... [more ▼]

Granting loans is one of the major concerns of financial institutions due to the risks of default borrowers. Default prediction by the neural networks is a popular technique for credit risk modeling. Neural networks generally offer the accurate predictions that help banks to prevent financial losses and grow their business by approving more creditworthy borrowers. Although neural networks are capable of capturing the complex, non-linear relationships between a large number of features and output, these models act as black boxes. This is a graduation project paper that is focused on loan default risk prediction by multi-layer perceptron neural network and building up explainability to some degree in the trained neural networks through sensitivity analysis. The architecture of a multi-layer perceptron neural network with the best result is used to help the credit-risk manager in explaining why an applicant is a defaulter or non-defaulter. The prediction of a trained multi-layer perceptron neural network is explained by mapping input features and target variables directly using a model-agnostic explanation as well as a modelspecific explanation. Lastly, a comparison is performed between two explanation methods. [less ▲]

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See detailAccelerating fatigue simulations of a phase-field damage model for rubber
Loew, Pascal Juergen UL; Poh, Leong Hien; Peters, Bernhard UL et al

in Computer Methods in Applied Mechanics and Engineering (2020), 370(113247),

Phase-field damage models are able to describe crack nucleation as well as crack propagation and coalescence without additional technicalities, because cracks are treated in a continuous, spatially finite ... [more ▼]

Phase-field damage models are able to describe crack nucleation as well as crack propagation and coalescence without additional technicalities, because cracks are treated in a continuous, spatially finite manner. Previously, we have developed a phase-field model to capture the rate-dependent failure of rubber, and we have further enhanced it to describe failure due to cyclic loading. Although the model accurately describes fatigue failure, the associated cyclic simulations are slow. Therefore, this contribution presents an acceleration scheme for cyclic simulations of our previously introduced phase-field damage model so that the simulation speed is increased to facilitate large-scale simulations of industrially relevant problems. We formulate an explicit and an implicit cycle jump method, which, depending on the selected jump size, reduce the calculation time up to 99.5%. To circumvent the manual tuning of the jump size, we also present an adaptive jump size selection procedure. Thanks to the implicit adaptive scheme, all material parameters are identified from experiments, which include fatigue crack nucleation and crack growth. Finally, the model and its parameters are validated with additional measurements of the fatigue crack growth rate. [less ▲]

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See detail3D SPARSE DEFORMATION SIGNATURE FOR DYNAMIC FACE RECOGNITION
Shabayek, Abd El Rahman UL; Aouada, Djamila UL; Cherenkova, Kseniya UL et al

in 27th IEEE International Conference on Image Processing (ICIP 2020), Abu Dhabi 25-28 October 2020 (2020, October)

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See detailKeynote lecture: The Hybrid Historian - Historical Research in the Digital Age
Zaagsma, Gerben UL

Presentation (2020, September 25)

In the past decade, we have witnessed a shift from technological determinism to more attention to the methodological and epistemological changes in historical research which the digital turn has brought ... [more ▼]

In the past decade, we have witnessed a shift from technological determinism to more attention to the methodological and epistemological changes in historical research which the digital turn has brought about. This talk will focus on how the practice of doing history has changed in the digital age against the background of broader historical developments in the so-called digital humanities. I will argue that, in many ways, hybridity, seen at its most basic level as the integration of 'traditional' and 'digital' approaches, is the new normal for most historians. However, when more broadly conceptualised as the integration of newly emerging tools, technologies, materials, and/or practices in historical research, it also becomes clear that hybridity has a long and often unacknowledged history that predates the advent of computers – analog and digital. Against this backdrop, the first part of my talk traces this unacknowledged history and the debates accompanying the (wo)man-machine encounter in the historical research process more generally. As I will argue, this encounter needs to be qualified according to its most elementary phases (data & information gathering, processing, analysis, and dissemination). Crucially, the speed, enthusiasm, and rate of the uptake of new technologies differs, and has always differed, significantly across these phases. In the second half of the talk, I will then offer a concrete example of these insights by using my research on the diaries of Anne Frank as a case study and will demonstrate the hybrid nature of today's historical research process, both as a reality and potentiality. Exploring the longue durée of the impact of new technologies on the practice of history is not to deny the specificity of the current moment but helps us to see how 'digital' has now come to affect the entire historical profession in ways unseen before. Indeed, technology has become inescapable, even if many historians refuse to acknowledge the fact and remain reluctant to embrace it. Yet, we can only truly ground our current 'digital' practices, and learn from past experiences and expertise, by contextualising and qualifying what is new and what is not. The real challenge for our profession now is to take a mental leap forward and be consciously hybrid, to acknowledge that 'digital' is not merely complementary but integral to the practice of doing history, and purposely reflect its implications. [less ▲]

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See detailKritische oder angewandte Geographie – oder beides? Ein Kommentar
Hesse, Markus UL

in Standort (2020)

The aim of this commentary is threefold. First, it interrogates the specific definition and situatedness of “critical” and “applied” geography; second, it discusses the assumption that there is a ... [more ▼]

The aim of this commentary is threefold. First, it interrogates the specific definition and situatedness of “critical” and “applied” geography; second, it discusses the assumption that there is a disconnect between science and social movements made in the context of critical discourses. Third, this leads to reflection upon what the interface between science and practice in geography is, or what it could or should be like today. [less ▲]

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See detailActive Re-identification Attacks on Periodically Released Dynamic Social Graphs
Chen, Xihui UL; Kepuska, Ema UL; Mauw, Sjouke UL et al

in Chen, Liqun; Li, Ninghui; Liang, Kaitai (Eds.) et al Computer Security - ESORICS 2020 (2020, September 13)

Active re-identification attacks pose a serious threat to privacy-preserving social graph publication. Active attackers create fake accounts to enforce structural patterns that can be used to re-identify ... [more ▼]

Active re-identification attacks pose a serious threat to privacy-preserving social graph publication. Active attackers create fake accounts to enforce structural patterns that can be used to re-identify legitimate users on published anonymised graphs, even without additional background knowledge. So far, this type of attacks has only been studied in the scenario where the inherently dynamic social graph is published once. In this paper, we present the first active re-identification attack in the more realistic scenario where a dynamic social graph is periodically published. Our new attack leverages tempo-structural patterns, created by a dynamic set of sybil nodes, for strengthening the adversary. We evaluate our new attack through a comprehensive set of experiments on real-life and synthetic dynamic social graphs. We show that our new attack substantially outperforms the most effective static active attack in the literature by increasing success probability by at least two times and efficiency by at least 11 times. Moreover, we show that, unlike the static attack, our new attack remains at the same level of efficiency as the publication process advances. Additionally, we conduct a study on the factors that may thwart our new attack, which can help design dynamic graph anonymisation methods displaying a better balance between privacy and utility. [less ▲]

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See detailPermissioned Blockchain Frameworks in the Industry: A Comparison
Polge, Julien UL; Robert, Jérémy UL; Le Traon, Yves UL

in ICT Express (2020)

Permissioned and private blockchain platforms are increasingly used in today’s industry. This paper provides a comprehensive and comparative study of the 5 major frameworks (Fabric, Ethereum, Quorum ... [more ▼]

Permissioned and private blockchain platforms are increasingly used in today’s industry. This paper provides a comprehensive and comparative study of the 5 major frameworks (Fabric, Ethereum, Quorum, MultiChain and R3 Corda) with regard to the community activities, performance, scalability, privacy and adoption criteria. Based on a literature review, this study shows that even if Fabric is promising, the final selection of a framework for a specific case-study is always a trade-off. Finally, lessons learnt are given for industrial practitioners and researchers. [less ▲]

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