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See detailInternationale Besteuerung der digitalen Wirtschaft: EU- und OECD-Vorschläge
Sinnig, Julia UL

in Taeger, Jürgen (Ed.) Tagungsband Herbstakademie 2018: Rechtsfragen digitaler Transformationen - Gestaltung digitaler Veränderungsprozesse durch Recht (in press)

Im März 2018 stellten sowohl die Organisation für wirtschaftliche Zusammenarbeit und Entwicklung (OECD) als auch die Europäische Union (EU) Zwischenergebnisse ihrer Arbeit im Bereich der ... [more ▼]

Im März 2018 stellten sowohl die Organisation für wirtschaftliche Zusammenarbeit und Entwicklung (OECD) als auch die Europäische Union (EU) Zwischenergebnisse ihrer Arbeit im Bereich der Ertragsbesteuerung digitalisierter Geschäftsaktivitäten vor. Während die OECD keine konkrete Empfehlung zur Anpassung bestehender Vorschriften des internationalen Steuerrechts aussprach, stellte die Europäische Kommission sowohl eine langfristige Maßnahme – eine Anpassung des Betriebsstättenkonzepts zugunsten einer sog. signifikanten digitalen Präsenz – als auch einen kurzfristigen Besteuerungsvorschlag – eine sog. Digitalsteuer – vor. Dieser Beitrag knüpft an den Vortrag der Verfasserin in Heidelberg anlässlich der Herbstakademie 2017 an. [less ▲]

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See detailElectrophysiological correlates of emotional crossmodal processing in binge drinking.
Lannoy, Severine; D'Hondt, Fabien; Dormal, Valerie et al

in Cognitive, affective & behavioral neuroscience (in press)

Emotional crossmodal integration (i.e., multisensorial decoding of emotions) is a crucial process that ensures adaptive social behaviors and responses to the environment. Recent evidence suggests that in ... [more ▼]

Emotional crossmodal integration (i.e., multisensorial decoding of emotions) is a crucial process that ensures adaptive social behaviors and responses to the environment. Recent evidence suggests that in binge drinking-an excessive alcohol consumption pattern associated with psychological and cerebral deficits-crossmodal integration is preserved at the behavioral level. Although some studies have suggested brain modifications during affective processing in binge drinking, nothing is known about the cerebral correlates of crossmodal integration. In the current study, we asked 53 university students (17 binge drinkers, 17 moderate drinkers, 19 nondrinkers) to perform an emotional crossmodal task while their behavioral and neurophysiological responses were recorded. Participants had to identify happiness and anger in three conditions (unimodal, crossmodal congruent, crossmodal incongruent) and two modalities (face and/or voice). Binge drinkers did not significantly differ from moderate drinkers and nondrinkers at the behavioral level. However, widespread cerebral modifications were found at perceptual (N100) and mainly at decisional (P3b) stages in binge drinkers, indexed by slower brain processing and stronger activity. These cerebral modifications were mostly related to anger processing and crossmodal integration. This study highlights higher electrophysiological activity in the absence of behavioral deficits, which could index a potential compensation process in binge drinkers. In line with results found in severe alcohol-use disorders, these electrophysiological findings show modified anger processing, which might have a deleterious impact on social functioning. Moreover, this study suggests impaired crossmodal integration at early stages of alcohol-related disorders. [less ▲]

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See detailValuing Creativity, Feeling Overworked and Working Hours: Male Workers and the New Spirit of Capitalism
Samuel, Robin UL; Kanji, Shireen

in Time & Society (in press)

Boltanski and Chiapello (2005) argued that creativity is a required attribute of managers emanating from the ideology of the ‘New Spirit of Capitalism’. Ideology provides the justification for work ... [more ▼]

Boltanski and Chiapello (2005) argued that creativity is a required attribute of managers emanating from the ideology of the ‘New Spirit of Capitalism’. Ideology provides the justification for work practices and brings material consequences in relation to the experience of time. This article explores both the ideology and the links between the ideological and the experience of time by assessing whether male managers prioritise creativity and whether this is related to their working hours, driving them to work longer hours than other workers and longer hours than they actually want. Men’s dominant position in work organisations puts them at the centre of this exploration. Using multilevel logistic and linear models on 2010 data from the European Social Survey (N = 7049), we show that male managers prioritise creativity more than other workers do. There are consequences for the experience of time as valuing creativity in combination with being a manager increases working hours above the large and significant effect of being a manager. The feeling of overwork is raised independently for those who value creativity and for those who are managers. [less ▲]

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See detailAccess to Medical Technologies: Do Gender and Social Capital Matter?
Geraudel, Mickaël UL; Gundolf, Katherine; Cesinger, Beate et al

in Management International = International Management = Gestión Internacional (in press)

We explore the relationship between the characteristics of social capital, the speed of access to medical technologies and the role of gender in a private practice context. Our findings from a sample of ... [more ▼]

We explore the relationship between the characteristics of social capital, the speed of access to medical technologies and the role of gender in a private practice context. Our findings from a sample of 98 German private practitioners show that: (a) being a woman has an overall negative impact on the speed of access to medical technologies; (b) private practitioners with strong social network ties obtain quicker access to medical technologies than do those with weak ties; (c) men relying on their weak ties perform better than women who do so. In contrast, we observe that women relying on strong ties outperform their male counterparts in terms of speed of access to medical technologies. [less ▲]

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See detailChallenges in completing EMU: asymmetric competition vs fiscal harmonisation. A case study of the Benelux countries
Danescu, Elena UL

in Journal of Contemporary European Research [=JCER] (2019)

This paper aims to investigate the concept, context and socio-economic consequences of fiscal competition in the integrated economic space of EMU in completion, to pinpoint the positive and negative ... [more ▼]

This paper aims to investigate the concept, context and socio-economic consequences of fiscal competition in the integrated economic space of EMU in completion, to pinpoint the positive and negative factors at work via a case study of the Benelux countries – both founder members of the EU and pioneers of EMU – and to examine the impact on European and international regulations in the field. In particular, it will endeavour to provide a comprehensive interpretation of fiscal policy in the Benelux countries via a comparative approach and from a historical perspective. It will look at the development of respective domestic fiscal policies, driven by national interests and by membership of a Community that is subject to requirements in terms of harmonisation and taxation, but also by constant contact (and frequent clashes) with the multilateral international environment. [less ▲]

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See detailSimultaneous finite element analysis of circuit-integrated piezoelectric energy harvesting from fluid-structure interaction
Ravi, Srivathsan; Zilian, Andreas UL

in Mechanical Systems & Signal Processing (2019), 114

Flow-driven piezoelectric energy harvesting is a strongly coupled multiphysics phenomenon that involves complex three-way interaction between the fluid flow, the electromechanical effect of the ... [more ▼]

Flow-driven piezoelectric energy harvesting is a strongly coupled multiphysics phenomenon that involves complex three-way interaction between the fluid flow, the electromechanical effect of the piezoelectric material mounted on a deformable substrate structure and the controlling electrical circuit. High fidelity computational solution approaches are essential for the analysis of flow-driven energy harvesters in order to capture the main physical aspects of the coupled problem and to accurately predict the power output of a harvester. While there are some phenomenological and numerical models for flow-driven harvesters reported in the literature, a fully three-dimensional strongly coupled model has not yet been developed, especially in the context of flow-driven energy harvesting. The weighted residuals method is applied to establish a mixed integral equation describing the incompressible Newtonian flow, elastic substrate structure, piezoelectric patch, equipotential electrode and attached electric circuit that form the multiphysics fluid-structure interaction problem. A monolithic numerical solution method is derived that provides consistent and simultaneous solution to all physical fields as well as to fluid mesh deformation. The approximate solution is based on a mixed space-time finite element discretization with static condensation of the auxiliary fields. The discontinuous Galerkin method is utilized for integrating the monolithic model in time. The proposed solution scheme is illustrated in the example of a lid driven cavity with a flexible piezoelectric bottom wall, demonstrating quantification of the amount of electrical energy extractable from fluid flow by means of a piezoelectric harvester device. The results indicate that in order to make reliable predictions on the power output under varying operational states, the realization of strong multiphysics coupling is required for the mathematical model as well as the numerical solution scheme to capture the characteristics of flow-driven energy harvesters. [less ▲]

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See detailReductions of elliptic curves
Perucca, Antonella UL

in Proceedings of the Roman Number Theory Association (2019), 4

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See detailStriking a balance between competitiveness and social fairness: what can we expect from the European Pillar of Social Rights?
Muñoz, Susana UL

in Chiocchetti, Paolo; Allemand, Frédéric (Eds.) Competitiveness and Solidarity in the European Union: Interdisciplinary Perspectives (2019)

The solemnly proclaimed European Pillar of Social Rights provides a meaningful response to the process of building a deeper, fairer European Union in the aftermath of the crisis. This chapter aims to ... [more ▼]

The solemnly proclaimed European Pillar of Social Rights provides a meaningful response to the process of building a deeper, fairer European Union in the aftermath of the crisis. This chapter aims to provide a critical assessment of the nature, scope, rationale, purpose, content and effectiveness of the Pillar in the light of its potential contribution to foster social fairness and competitiveness in the EU. The Pillar complements and develops the EU’s social acquis and reinforces standards which may provide a fairer and more socially-balanced competitiveness in the EU. Progress has been made, but further efforts are needed to build a sense of common purpose to strengthen the social foundations of the Union. [less ▲]

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See detailInterculturality in intimate relationships: Conflicts and conflict regulation
Aleksic, Gabrijela UL; Dasch, Hannah Katharina

in Aleksic, Gabrijela (Ed.) Experiencing Culture in Intercultural Intimate Relationships (2019)

It is commonly known that experiencing conflict can have negative impact on an individuals’ physical and mental health. Especially in intimate relationships, conflict has great influence on the well-being ... [more ▼]

It is commonly known that experiencing conflict can have negative impact on an individuals’ physical and mental health. Especially in intimate relationships, conflict has great influence on the well-being of both partners. Since intercultural intimate relationships are associated with both exceptional obstacles and benefits, conflict behavior in those relationships is of substantial interest in this research project. The aim of this study is to investigate how conflicts in intimate relationships are affected by the partners’ cultural backgrounds and linguistic barriers. It further seeks to unravel how conflict resolution is approached in order to provide a broader knowledge base in this field. For the purpose of this research, four semi-structured interviews with two couples were conducted individually. Each couple was interviewed by a different researcher. Ensuing, the interviews were transcribed and afterwards the data was analyzed implementing qualitative content analyses. The results provide insight into different levels of relationship functioning, sources of conflict as well as conflict resolution. Therefore, the findings of this study may have important implications for clinical practice. [less ▲]

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See detailPierre Werner and Europe: The Family Archives Behind the Werner Report.
Danescu, Elena UL

Book published by Palgrave Macmillan (2018)

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See detailSocial Change for Sustainable Localized Food Sovereignty. Convergence between Prosumers and Ethical Entrepreneurs.
Reckinger, Rachel UL

in Sociologia del Lavoro (2018), 152(4),

Recently, some resourceful community-driven initiatives for local food production and retail have arisen in Luxembourg, where low organic agricultural rates are paradoxically paired with high consumer ... [more ▼]

Recently, some resourceful community-driven initiatives for local food production and retail have arisen in Luxembourg, where low organic agricultural rates are paradoxically paired with high consumer demands. This niche of social innovators is combining agro-ecology with circular economy practices. Four cases of alternative food networks are of interest – studied with qualitative interviews and participant observation. One has been established since the 1980s with 200 employees, partly in social insertion measures. The more recent and smaller initiatives are characterized by a cooperative governance, a community-supported agricultural outlook, hands-on workshops and time-banks, all enabled by social media. These initiatives are more radical in their agro-ecological or permaculture practices, focusing on regenerative land use without relying on imports and fostering the integration of consumers with varying degrees of prosumer involvement, as a politicized step further than mere (possibly industrialized) organic production. [less ▲]

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See detailSequential Resource Distribution Technique for Multi-User OFDM-SWIPT based Cooperative Networks
Gautam, Sumit UL; Lagunas, Eva UL; Chatzinotas, Symeon UL et al

Scientific Conference (2018, December)

In this paper, we investigate resource allocation and relay selection in a dual-hop orthogonal frequency division multiplexing (OFDM)-based multi-user network where amplify-and-forward (AF) enabled relays ... [more ▼]

In this paper, we investigate resource allocation and relay selection in a dual-hop orthogonal frequency division multiplexing (OFDM)-based multi-user network where amplify-and-forward (AF) enabled relays facilitate simultaneous wireless information and power transfer (SWIPT) to the end-users. In this context, we address an optimization problem to maximize the end-users’ sum-rate subjected to transmit power and harvested energy constraints. Furthermore, the problem is formulated for both time-switching (TS) and power-splitting (PS) SWIPT schemes.We aim at optimizing the users’ SWIPT splitting factors as well as sub-carrier–destination assignment, sub-carrier pairing, and relay–destination coupling metrics. This kind of joint evaluation is combinatorial in nature with non-linear structure involving mixed-integer programming. In this vein, we propose a sub-optimal low complex sequential resource distribution (SRD) method to solve the aforementioned problem. The performance of the proposed SRD technique is compared with a semi-random resource allocation and relay selection approach. Simulation results reveal the benefits of the proposed design under several parameter values with various operating conditions to illustrate the efficiency of SWIPT schemes for the proposed techniques. [less ▲]

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See detailLiebe - Krankheit - Wahn: Lyrische Spielarten im Minnesang
Bendheim, Amelie UL

Speeches/Talks (2018)

„Die Liebe verwundet, die Liebe fesselt, die Liebe macht krank, die Liebe lässt schwach werden.“ Dieser ursprünglich theologisch geprägte Gedanke über die Gewalt der Liebe, lässt sich – auf seinen ... [more ▼]

„Die Liebe verwundet, die Liebe fesselt, die Liebe macht krank, die Liebe lässt schwach werden.“ Dieser ursprünglich theologisch geprägte Gedanke über die Gewalt der Liebe, lässt sich – auf seinen bildlichen Kern reduziert – in zahllosen Varianten in der Weltliteratur aufspüren. Eine besonders auffällige Form scheinen dabei jene Texte zu bieten, die Liebe nicht allein als Auslöser, sondern gar selbst als Krankheit darstellen – zumindest implizit, insofern der Zustand des Verliebtseins mit dem Zustand der Krankheit gleichgesetzt wird. Wohl bekannt sind die körperlichen Symptome dieses Liebeszustandes, die in ihrer klassischen Ausprägung im Erbleichen, Erröten, Zittern, in Sprachlähmung sowie im Bluten aus der Nase bestehen und im Mittelalter als minnesiech bezeichnet werden. Erscheint die Liebeskrankheit im Minnesang noch vornehmlich in metaphorischem Gebrauch (s. das gequälte Herz als Beispiel für den Schmerz der Minne), weisen spätere Wörterbucheinträge (vgl. hierzu die Lemmata ‚Liebesfieber’ oder ‚Jungfernkrankheit’) wiederum auf ein stärker körperlich-physiologisches und auch sexuell-erotisches Verständnis von Liebe hin. Krank macht die Minne nun vor allem – und dem mittelalterlichen medizinischen Duktus der Humoralpathologie folgend – dann, wenn das körperliche Begehren nicht befriedigt werden kann. Der hier skizzierte Vortrag will die Vorstellung von Krankheit in einem größeren semantischen Beziehungsgeflecht in den Blick nehmen, das sich in der mhd. Lyrik in bedeutender Weise hervortut: der Verbindung Liebe – Krankheit – Wahn. Der wân als zentrales Symptom der Minnekrankheit löst – so die hier zu erprobende These –den Geist vom versehrten Körper und definiert damit den Übergang von der körperlichen Krankheit(smetapher) zu einer seelischen Zustandsbeschreibung. Die sprachhistorische Herleitung von mhd. wân vermag diese Beobachtung weiter zu untermauern, insofern der Begriff ein zunächst wertneutrales, semantisch vielfältiges Bedeutungsspektrum impliziert, und sich mit ‚Hoffnung, Zuversicht oder Einbildungskraft’ ins Nhd. übertragen ließe. Im krankhaften Minne-wân öffnen sich Denkräume, denen der Minnesang eine literarische Ausgestaltung verleiht; Minne-wân führt damit nicht nur zu körperlicher Versehrtheit, sondern ist eben auch guoter wân, lieber wân, saelden wân – und damit einer der ersten ‚Testräume’ für die Erprobung gedanklicher Spielarten des lyrischen Ichs in der deutschen Dichtung überhaupt. [less ▲]

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See detailA volume-averaged nodal projection method for the Reissner-Mindlin plate model
Ortiz-Bernardin, Alejandro; Köbrich, Philip; Hale, Jack UL et al

in Computer Methods in Applied Mechanics & Engineering (2018), 341

We introduce a novel meshfree Galerkin method for the solution of Reissner-Mindlin plate problems that is written in terms of the primitive variables only (i.e., rotations and transverse displacement) and ... [more ▼]

We introduce a novel meshfree Galerkin method for the solution of Reissner-Mindlin plate problems that is written in terms of the primitive variables only (i.e., rotations and transverse displacement) and is devoid of shear-locking. The proposed approach uses linear maximum-entropy approximations and is built variationally on a two-field potential energy functional wherein the shear strain, written in terms of the primitive variables, is computed via a volume-averaged nodal projection operator that is constructed from the Kirchhoff constraint of the three-field mixed weak form. The stability of the method is rendered by adding bubble-like enrichment to the rotation degrees of freedom. Some benchmark problems are presented to demonstrate the accuracy and performance of the proposed method for a wide range of plate thicknesses. [less ▲]

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See detailEducational assessment and its prospects in the 21st century
Greiff, Samuel UL

Speeches/Talks (2018)

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See detailSmall States in the European Union : Luxembourg
Danescu, Elena UL

in Hartly, Cathy (Ed.) WESTERN EUROPE 2019 (2018)

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See detailHITECS: A UML Profile and Analysis Framework for Hardware-in-the-Loop Testing of Cyber Physical Systems
Shin, Seung Yeob UL; Chaouch, Karim UL; Nejati, Shiva UL et al

in Proceedings of ACM/IEEE 21st International Conference on Model Driven Engineering Languages and Systems (MODELS’18) (2018, October)

Hardware-in-the-loop (HiL) testing is an important step in the development of cyber physical systems (CPS). CPS HiL test cases manipulate hardware components, are time-consuming and their behaviors are ... [more ▼]

Hardware-in-the-loop (HiL) testing is an important step in the development of cyber physical systems (CPS). CPS HiL test cases manipulate hardware components, are time-consuming and their behaviors are impacted by the uncertainties in the CPS environment. To mitigate the risks associated with HiL testing, engineers have to ensure that (1) HiL test cases are well-behaved, i.e., they implement valid test scenarios and do not accidentally damage hardware, and (2) HiL test cases can execute within the time budget allotted to HiL testing. This paper proposes an approach to help engineers systematically specify and analyze CPS HiL test cases. Leveraging the UML profile mechanism, we develop an executable domain-specific language, HITECS, for HiL test case specification. HITECS builds on the UML Testing Profile (UTP) and the UML action language (Alf). Using HITECS, we provide analysis methods to check whether HiL test cases are well-behaved, and to estimate the execution times of these test cases before the actual HiL testing stage. We apply HITECS to an industrial case study from the satellite domain. Our results show that: (1) HITECS is feasible to use in practice; (2) HITECS helps engineers define more complete and effective well-behavedness assertions for HiL test cases, compared to when these assertions are defined without systematic guidance; (3) HITECS verifies in practical time that HiL test cases are well-behaved; and (4) HITECS accurately estimates HiL test case execution times. [less ▲]

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See detailEnabling Model Testing of Cyber-Physical Systems
Gonzalez Perez, Carlos Alberto UL; Varmazyar, Mojtaba UL; Nejati, Shiva UL et al

in Proceedings of ACM/IEEE 21st International Conference on Model Driven Engineering Languages and Systems (MODELS’18) (2018, October)

Applying traditional testing techniques to Cyber-Physical Systems (CPS) is challenging due to the deep intertwining of software and hardware, and the complex, continuous interactions between the system ... [more ▼]

Applying traditional testing techniques to Cyber-Physical Systems (CPS) is challenging due to the deep intertwining of software and hardware, and the complex, continuous interactions between the system and its environment. To alleviate these challenges we propose to conduct testing at early stages and over executable models of the system and its environment. Model testing of CPSs is however not without difficulties. The complexity and heterogeneity of CPSs renders necessary the combination of different modeling formalisms to build faithful models of their different components. The execution of CPS models thus requires an execution framework supporting the co-simulation of different types of models, including models of the software (e.g., SysML), hardware (e.g., SysML or Simulink), and physical environment (e.g., Simulink). Furthermore, to enable testing in realistic conditions, the co-simulation process must be (1) fast, so that thousands of simulations can be conducted in practical time, (2) controllable, to precisely emulate the expected runtime behavior of the system and, (3) observable, by producing simulation data enabling the detection of failures. To tackle these challenges, we propose a SysML-based modeling methodology for model testing of CPSs, and an efficient SysML-Simulink co-simulation framework. Our approach was validated on a case study from the satellite domain. [less ▲]

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