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See detailEnforcing the European Semester: the politics of asymmetric information in the excessive deficit and macroeconomic imbalance procedures
Howarth, David UL; Savage, James

in Journal of European Public Policy (2018), 25(2), 193-211

The European Semester is an information-driven surveillance system that relies upon budgetary and economic statistics collected from the European Union’s member states and analyzed by the European ... [more ▼]

The European Semester is an information-driven surveillance system that relies upon budgetary and economic statistics collected from the European Union’s member states and analyzed by the European Commission. This is true for both the Excessive Deficit Procedure (EDP) and the Macroeconomic Imbalance Procedure (MIP). This article employs Principal–Agent theory to analyze the politics of asymmetric information in the EDP and MIP. The study explores how the statistical requirements of the Six-Pack have been enforced by the Commission and the Economic and Financial Affairs Council to strengthen the EDP, even as the statistical integrity of the MIP received less protection. The article examines how the misrepresentation of statistics by Spain’s Autonomous Community of Valencia provoked the first financial sanction in the history of Economic and Monetary Union, as well as the Commission’s unsuccessful efforts to strengthen the reliability of MIP statistics. [less ▲]

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See detailTesting Vision-Based Control Systems Using Learnable Evolutionary Algorithms
Ben Abdessalem (helali), Raja UL; Nejati, Shiva UL; Briand, Lionel UL et al

in Proceedings of the 40th International Conference on Software Engineering (ICSE 2018) (2018)

Vision-based control systems are key enablers of many autonomous vehicular systems, including self-driving cars. Testing such systems is complicated by complex and multidimensional input spaces. We ... [more ▼]

Vision-based control systems are key enablers of many autonomous vehicular systems, including self-driving cars. Testing such systems is complicated by complex and multidimensional input spaces. We propose an automated testing algorithm that builds on learnable evolutionary algorithms. These algorithms rely on machine learning or a combination of machine learning and Darwinian genetic operators to guide the generation of new solutions (test scenarios in our context). Our approach combines multiobjective population-based search algorithms and decision tree classification models to achieve the following goals: First, classification models guide the search-based generation of tests faster towards critical test scenarios (i.e., test scenarios leading to failures). Second, search algorithms refine classification models so that the models can accurately characterize critical regions (i.e., the regions of a test input space that are likely to contain most critical test scenarios). Our evaluation performed on an industrial automotive vision-based control system shows that: (1) Our algorithm outperforms a baseline evolutionary search algorithm and generates 78% more distinct, critical test scenarios compared to the baseline algorithm. (2) Our algorithm accurately characterizes critical regions of the system under test, thus identifying the conditions that likely to lead to system failures. [less ▲]

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See detailGrundkurs Theorien der Sozialen Arbeit
Sandermann, Philipp; Neumann, Sascha UL

Book published by utb (2018)

Diese kritisch-systematische Einführung gibt Studierenden einen Überblick zum Themenfeld Theorien der Sozialen Arbeit. Die Autoren ermuntern zu einer differenzierten und analytischen Auseinandersetzung ... [more ▼]

Diese kritisch-systematische Einführung gibt Studierenden einen Überblick zum Themenfeld Theorien der Sozialen Arbeit. Die Autoren ermuntern zu einer differenzierten und analytischen Auseinandersetzung mit dem aktuellen Theoriediskurs, bei dem neben dem Aussagegehalt der Theorien der Sozialen Arbeit vor allem ihre Plausibilisierungsstrategien sowie deren Grenzen im Mittelpunkt stehen (Verlagsinfo). [less ▲]

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See detailVisuo-spatial abilities are key for young children’s verbal number skills
Cornu, Véronique UL; Schiltz, Christine UL; Martin, Romain UL et al

in Journal of Experimental Child Psychology (2018), 166C

Children’s development of verbal number skills (i.e, counting abilities and knowledge of the number names) presents a milestone in mathematical development. Different factors such as visuo-spatial and ... [more ▼]

Children’s development of verbal number skills (i.e, counting abilities and knowledge of the number names) presents a milestone in mathematical development. Different factors such as visuo-spatial and verbal abilities have been discussed to contribute to the development of these foundational skills. To understand the cognitive nature of verbal number skills in young children, the present study assessed the relation of preschoolers’ verbal and visuo-spatial abilities to their verbal number skills. In total, 141 children aged between five and six years participated in the present study. Verbal number skills were regressed on vocabulary, phonological awareness and visuo-spatial abilities, as well as verbal and visuo-spatial working memory in a structural equation model. Only visuo-spatial abilities emerged as a significant predictor of verbal number skills in the estimated model. Our results suggest that visuo-spatial abilities contribute to a larger extent to children’s verbal number skills than verbal abilities. From a theoretical point of view, these results suggest a visuo-spatial, rather than a verbal, grounding of verbal number skills. These results are potentially informative for the conception of early mathematics assessments and interventions. [less ▲]

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See detailComprendre la procédure civile québécoise
Menetrey, Séverine UL; Guillemard, Sylvette

Book published by Yvon Blais (2018)

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See detailElectoral Violence in the Western Balkans. From Voting to Fighting and Back
Mochtak, Michal UL

Book published by Routledge (2018)

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See detailDynamische Mathematik und computergestützte Tests: GeoGebra in TAO
Kreis, Yves UL; Dording, Carole; Keller, Ulrich UL et al

in Weinberger, Armin; Ladel, Silke; Knopf, Julia (Eds.) Digitalisierung und Bildung (2018)

In diesem Beitrag stellen wir die Integration der Dynamischen-Mathematik-Software GeoGebra in die technologiebasierte Assessment-Plattform TAO vor. Diese Kombination von Anwendungen schafft neue Lern-

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See detailTransnational experiences, language competences and worldviews: contrasting language policies in two recently migrated Greek families in Luxembourg
Kirsch, Claudine UL; Gogonas, Nikos

in Multilingua (2018)

Against the backdrop of the ongoing crisis-led migration from Southern to Northwestern Europe, the present paper reports on a case study of two families who have recently migrated from Greece to ... [more ▼]

Against the backdrop of the ongoing crisis-led migration from Southern to Northwestern Europe, the present paper reports on a case study of two families who have recently migrated from Greece to Luxembourg. Luxembourg has a trilingual education system and many pupils of migrant background face difficulties on this account. Drawing on the framework of Family Language Policy, this paper explores the language ideologies and management strategies of two families as well as factors influencing their policies. This qualitative study was based on interviews, observations, and videos recorded by one of the families. The findings show that the families have contrasting language ideologies and management strategies that are informed by their differing transnational experiences, competences and worldviews. This study can contribute to a better understanding of the ways in which migrant families use their language resources in their new country. [less ▲]

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See detailCultural psychology of transgenerational family relations: Investigating ambivalences
Albert, Isabelle UL; Abbey, Emily; Valsiner, Jaan UL

Book published by IAP (2018)

The present volume deals with the experience of ambivalence in family relations - a well-known phenomenon that has inspired more and more research and theorizing in the last years but that is however ... [more ▼]

The present volume deals with the experience of ambivalence in family relations - a well-known phenomenon that has inspired more and more research and theorizing in the last years but that is however sometimes difficult to capture. Bringing together junior and senior researchers from different parts of the world, ideas on theory and research are elaborated following qualitative and quantitative approaches. This book thus contributes to theory-building as well as outlining research results and helping to develop measurement in interpersonal and intergenerational relations. [less ▲]

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See detailPaCER - A fully automated method for electrode trajectory and contact reconstruction in deep brain stimulation
Husch, Andreas Dominik UL; Petersen, Mikkel V.; Gemmar, Peter et al

in NeuroImage: Clinical (2018), 17

Abstract Deep brain stimulation (DBS) is a neurosurgical intervention where electrodes are permanently implanted into the brain in order to modulate pathologic neural activity. The post-operative ... [more ▼]

Abstract Deep brain stimulation (DBS) is a neurosurgical intervention where electrodes are permanently implanted into the brain in order to modulate pathologic neural activity. The post-operative reconstruction of the DBS electrodes is important for an efficient stimulation parameter tuning. A major limitation of existing approaches for electrode reconstruction from post-operative imaging that prevents the clinical routine use is that they are manual or semi-automatic, and thus both time-consuming and subjective. Moreover, the existing methods rely on a simplified model of a straight line electrode trajectory, rather than the more realistic curved trajectory. The main contribution of this paper is that for the first time we present a highly accurate and fully automated method for electrode reconstruction that considers curved trajectories. The robustness of our proposed method is demonstrated using a multi-center clinical dataset consisting of N=44 electrodes. In all cases the electrode trajectories were successfully identified and reconstructed. In addition, the accuracy is demonstrated quantitatively using a high-accuracy phantom with known ground truth. In the phantom experiment, the method could detect individual electrode contacts with high accuracy and the trajectory reconstruction reached an error level below 100 μm (0.046 ± 0.025 mm). An implementation of the method is made publicly available such that it can directly be used by researchers or clinicians. This constitutes an important step towards future integration of lead reconstruction into standard clinical care. [less ▲]

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See detailThe ECOWAS Court of Justice as an Investment Tribunal
Happold, Matthew UL; Radović, Relja UL

in Journal of World Investment & Trade (2018), 19(1), 1-23

This article considers the extent to which foreign investors in Member States of the Economic Community of West African States (ECOWAS) might be able to use the ECOWAS Court of Justice to protect their ... [more ▼]

This article considers the extent to which foreign investors in Member States of the Economic Community of West African States (ECOWAS) might be able to use the ECOWAS Court of Justice to protect their investments against actions of their host States. It does so taking into account the ECOWAS Supplementary Act on Investments and the jurisprudence of the Court of Justice on, in particular, the extent of its substantive jurisdiction. Although it is not suggested that the Court of Justice would be better forum than an international arbitral tribunal, it is argued that it has considerable advantages over national courts. [less ▲]

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See detailThe Missing Risk Premium in Exchange Rates
Penasse, Julien UL

Scientific Conference (2017, December 15)

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See detailModelling argumentation on Axiom of Choice in ASPIC-END -- Technical report
Cramer, Marcos UL

Report (2017)

In this technical report, we present an application of the structured argumentation methodology to a debate in the foundations of mathematics. We work with ASPIC-END, a recently proposed adaptation of the ... [more ▼]

In this technical report, we present an application of the structured argumentation methodology to a debate in the foundations of mathematics. We work with ASPIC-END, a recently proposed adaptation of the structured argumentation framework ASPIC+ which can incorporate debates about logical principles, natural deduction style arguments and explanations. We apply this framework to build a preliminary formal model of parts of the debate that mathematicians had about the Axiom of Choice in the early 20th century. Furthermore, we briefly discuss the insight into the strengths and drawbacks of the modeling capacities of ASPIC-END that we have gained from producing this model. [less ▲]

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See detailThe publishing process and Open Access
England, Jonathan UL

Presentation (2017, December 13)

Series of workshops tailored towards early-career researchers in Luxembourg explaining the publishing process and how Open Access fits in the traditional journal-subscription based model. The idea is to ... [more ▼]

Series of workshops tailored towards early-career researchers in Luxembourg explaining the publishing process and how Open Access fits in the traditional journal-subscription based model. The idea is to break some of the myths around OA (e.g. OA is a journal, OA is only possible the gold way) by presenting the 'Green' (self-archiving) and 'gold' (paying Article Processing Charges) routes. Some of the benefits are presented, along with the main Luxembourgish funder FNR's mandate. The presentation uploaded was given to PhDs and post-docs from the Luxembourg Institute of Health on 13/12/2017. [less ▲]

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See detailMilitary Migrants. Luxembourgers in the Colonial Army of the Dutch East Indies
Bosma, Ulbe; Kolnberger, Thomas UL

in Itinerario (2017), 41(3), 555-580

Among the roughly 150,000 soldiers sent to the Dutch East Indies between 1815 and 1914, the Luxembourg contingent made up a tiny minority of just 1,075 men. Based upon extensive research into their ... [more ▼]

Among the roughly 150,000 soldiers sent to the Dutch East Indies between 1815 and 1914, the Luxembourg contingent made up a tiny minority of just 1,075 men. Based upon extensive research into their careers, data on these soldiers provide further clues to understanding what drove Europe’s young men to become colonial soldiers. The results of this national case study will be compared with earlier investigations by Bossenbroek and Bosma on recruits for the Dutch colonial army. Similar to the Dutch soldiers, their Luxembourg counterparts had a predominantly urban provenance. However, in contrast to the Dutch, they did not have a strong military background, and it appears that fewer Luxembourgers stayed behind in the Dutch East Indies after their tour of duty. They were more attracted by the payments that the recruiters doled out in advance, particularly at a time of economic crisis, than in a career in the tropics. [less ▲]

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See detailHealth Behaviour in School-aged Children - Studienergebnisse der HBSC-Erhebung 2014
Heinz, Andreas UL

Scientific Conference (2017, December 13)

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See detailFirst Vertical Land Movement Estimates on South Georgia Island: An Impact Study on Sea Level Change from Tide Gauge and Altimetry Measurements
Teferle, Felix Norman UL; Hunegnaw, Addisu UL; Abraha, Kibrom Ebuy UL et al

Poster (2017, December 11)

South Georgia Island in the Southern Atlantic Ocean has been a key location for the seismic, geomagnetic and oceanic global monitoring networks. However, no permanent geodetic monitoring station had been ... [more ▼]

South Georgia Island in the Southern Atlantic Ocean has been a key location for the seismic, geomagnetic and oceanic global monitoring networks. However, no permanent geodetic monitoring station had been established there despite the lack of observations from this region within, for example, the International GNSS Service (IGS) network of Global Navigation Satellite System (GNSS) stations. Then, in 2013 the King Edward Point (KEP) Geodetic Observatory was established with a focus on sea level studies and in support of general geoscience applications. Currently, this observatory located roughly half-way along the main island and along its northern coastline, consists of two GNSS stations (KEPA and KRSA) with local benchmark networks, allowing the height determinations from the GNSS antennas to be transferred to the KEP tide gauge (GLOSS ID 187) and forming a height reference within the International Terrestrial Reference Frame. In late 2014, three additional GNSS stations (SG01, SG02 and SG03) were established, all on small islands at the perimeter of the main island. Together the stations provide the best possible opportunity to study various geophysical processes in the region. With the GNSS-derived position time series partly reaching over 4.5 years in length, it has become possible to provide first estimates of vertical land movements for the island and KEP with its surrounding area. Together with four precise levelling campaigns of the benchmark network in 2013, 2014 and two in 2017, it has also been possible to investigate the very local character of the vertical motions, ie. the stability of the jetty upon which the tide gauge is mounted. Our measurements show that while South Georgia Island and the area around KEP are rising, the jetty and tide gauge are subsiding. In this study, we will present the preliminary results from the GNSS and levelling measurements and will discuss their impact on the sea level record from the KEP tide gauge which is ideally situated in a mid-ocean location for satellite altimetry calibration over the Southern Atlantic and Southern Oceans. [less ▲]

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See detailDes hommes ordinaires
Scuto, Denis UL

Article for general public (2017)

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See detailZugangsbarrieren im Gesundheitssystem - Ein Ländervergleich
Heinz, Andreas UL

Scientific Conference (2017, December 08)

In der international vergleichenden Forschung zu Gesundheitssystemen spielt der Zugang zu Gesundheitsleistungen eine zentrale Rolle. Entsprechende Typologien klassifizieren Gesundheitssysteme u.a. danach ... [more ▼]

In der international vergleichenden Forschung zu Gesundheitssystemen spielt der Zugang zu Gesundheitsleistungen eine zentrale Rolle. Entsprechende Typologien klassifizieren Gesundheitssysteme u.a. danach, ob Patienten Zuzahlungen leisten müssen, ob sie sich bei Hausärzten einschreiben müssen und nach welchen Regeln sie einen Facharzt konsultieren können (z.B. Reibling 2010, Wendt 2009, Böhm et al 2013). In der Typologie von Wendt gehört Österreich zum „Health service provision-oriented type“, der fast der gesamten Bevölkerung einen einfachen Zugang zu Gesundheitsleistungen bei geringen Zuzahlungen und freier Arztwahl ermöglicht (2009). Diese Typologien basieren jedoch auf den gesetzlichen Zugangsregeln in einem Land, nicht auf den subjektiven Erfahrungen der Bevölkerung mit Zugangsbarrieren. Im aktuellen European Social Survey (ESS) wurde nach diesen Barrieren gefragt: Haben Befragte medizinische Behandlungen nicht bekommen und was waren die Gründe (z.B. Kosten, Behandlung nicht erhältlich, Warteliste zu lang)? Der Vortrag stellt die Ergebnisse des ESS vor und geht auf folgende Fragen ein: • Wie häufig stoßen Kranke in Österreich und in anderen europäischen Ländern auf Zugangsbarrieren? • Welche Personen in Österreich sind besonders von Zugangsbarrieren betroffen? Die vorläufigen Ergebnisse deuten darauf hin, dass es durchaus nennenswerte Zugangsbarrieren im Gesundheitssystem Österreichs gibt und dass ohnehin benachteiligte Personen häufiger als andere auf Zugangsbarrieren stoßen. Für die wissenschaftliche Theorie stellt sich die Frage, ob die gängigen Typologien von Gesundheitssystemen um die subjektiven Erfahrungen ergänzt werden müssen. Für die Praxis stellt sich die Frage, wie schädlich Zugangsbarrieren sind und wie sie abgebaut werden können. [less ▲]

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See detailStatic and fatigue strength of a novel anatomically contoured implant compared to five current open-wedge high tibial osteotomy plates
Diffo Kaze, Arnaud UL; Maas, Stefan UL; Belsey, James et al

in Journal of Experimental Orthopaedics (2017), 4(39),

Abstract Background The purpose of the present study was to compare the mechanical static and fatigue strength of the size 2 osteotomy plate “Activmotion” with the following five other common implants for ... [more ▼]

Abstract Background The purpose of the present study was to compare the mechanical static and fatigue strength of the size 2 osteotomy plate “Activmotion” with the following five other common implants for the treatment of medial knee joint osteoarthritis: the TomoFix small stature, the TomoFix standard, the Contour Lock, the iBalance and the second generation PEEKPower. Methods Six fourth-generation tibial bone composites underwent a medial open-wedge high tibial osteotomy (HTO), according to standard techniques, using size 2 Activmotion osteotomy plates. All bone-implant constructs were subjected to static compression load to failure and load-controlled cyclic fatigue failure testing, according to a previously defined testing protocol. The mechanical stability was investigated by considering different criteria and parameters: maximum forces, the maximum number of loading cycles, stiffness, the permanent plastic deformation of the specimens during the cyclic fatigue tests, and the maximum displacement range in the hysteresis loops of the cyclic loading responses. Results In each test, all bone-implant constructs with the size 2 Activmotion plate failed with a fracture of the lateral cortex, like with the other five previously tested implants. For the static compression tests the failure occurred in each tested implant above the physiological loading of slow walking (> 2400 N). The load at failure for the Activmotion group was the highest (8200 N). In terms of maximum load and number of cycles performed prior to failure, the size 2 Activmotion plate showed higher results than all the other tested implants except the ContourLock plate. The iBalance implant offered the highest stiffness (3.1 kN/mm) for static loading on the lateral side, while the size 2 Activmotion showed the highest stiffness (4.8 kN/mm) in cyclic loading. Conclusions Overall, regarding all of the analysed strength parameters, the size 2 Activmotion plate provided equivalent or higher mechanical stability compared to the previously tested implant. Implants with a metaphyseal slope adapted to the tibia anatomy, and positioned more anteriorly on the proximal medial side of the tibia, should provide good mechanical stability. [less ▲]

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