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See detailArea exploration with a swarm of UAVs combining deterministic Chaotic Ant Colony Mobility with position MPC
Rosalie, Martin UL; Dentler, Jan Eric UL; Danoy, Grégoire UL et al

in 2017 International Conference on Unmanned Aircraft Systems (ICUAS) (in press)

The recent advances in Unmanned Aerial Vehicles (UAVs) technology permit to develop new usages for them. One of the current challenges is to operate UAVs as an autonomous swarm. In this domain we already ... [more ▼]

The recent advances in Unmanned Aerial Vehicles (UAVs) technology permit to develop new usages for them. One of the current challenges is to operate UAVs as an autonomous swarm. In this domain we already proposed a new mobility model using Ant Colony Algorithms combined with chaotic dynamics (CACOC) to enhance the coverage of an area by a swarm of UAVs. In this paper we propose to consider this mobility model as waypoints for real UAVs. A control model of the UAVs is deployed to test the efficiency of the coverage of an area by the swarm. We have tested our approach in a realistic robotics simulator (V-Rep) which is connected with ROS. We compare the performance in terms of coverage using several metrics to ensure that this mobility model is efficient for real UAVs. [less ▲]

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See detailAbsence of regulator of G-protein signaling 4 does not protect against dopamine neuron dysfunction and injury in the mouse 6-hydroxydopamine lesion model of Parkinson's disease
Ashrafi, Amer UL; Garcia, Pierre UL; Kollmus, Heike et al

in Neurobiology of Aging (in press)

Regulator of G-Protein Signaling 4 (RGS4), a member of the RGS family of proteins that inactivate G-proteins, has gained interest as a potential drug target for neurological disorders, such as epilepsy ... [more ▼]

Regulator of G-Protein Signaling 4 (RGS4), a member of the RGS family of proteins that inactivate G-proteins, has gained interest as a potential drug target for neurological disorders, such as epilepsy and Parkinson’s disease (PD). In the case of PD, the main current option for alleviating motor symptoms are dopamine replacement therapies, which have limitations because of side effects, and reduced effectiveness over the long term. Research on new non-dopaminergic PD drug targets has indicated that inhibition of RGS4 could be an effective adjuvant treatment option. The effectiveness of RGS4 inhibition for an array of PD-linked functional and structural neuroprotection endpoints has not yet been demonstrated. Here, we use the 6-Hydroxydopamine (6-OHDA) lesioning model of the nigrostriatal pathway in mice to address this question. We observe, using a battery of behavioral and pathological measures, that mice deficient for RGS4 are not protected from 6-OHDA induced injury, and show enhanced susceptibility in some measures of motor function. Our results suggest that inhibition of RGS4 as a non-dopaminergic target for PD should be approached with caution. [less ▲]

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See detailUrgency
Billieux, Joël UL

in Zeigler-Hill, Virgil; Shackelford, Todd K. (Eds.) Encyclopedia of Personality and Individual Differences (in press)

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See detail(Re)shaping Educational Research through ‘Programification’: Institutional Expansion, Change, and Translation in Norway
Zapp, Mike UL; Helgetun, Jo B.; Powell, Justin J W UL

in European Journal of Education (in press), 52

Educational research in Norway has experienced unprecedented structural expansion as well as cognitive shifts over the past two decades, especially due to increased state investments and the strategic use ... [more ▼]

Educational research in Norway has experienced unprecedented structural expansion as well as cognitive shifts over the past two decades, especially due to increased state investments and the strategic use of extensive and multi-year thematic programs to fund research projects. Applying a neo-institutionalist framework, we examine institutionalization dynamics in cultural-cognitive, normative, and regulative dimensions over the past two decades using interviews, research program calls, policy documents, and funding data. In the cultural-cognitive dimension, we find references to the knowledge society, the importance of evidence in policy-making, and ideas of quality, excellence, and relevance. In the normative dimension, we find the introduction of new professional and methodological standards, reflecting broader global patterns of academic and epistemic drift. In the regulative dimension, the strengthened role of both government and the Research Council of Norway is manifest in substantial growth in both funding and large-scale, long-term planning, including thematic choices—evidence of ‘programification’. The importance of external models has grown in an era of internationalization, yet translation occurs at every level of governance of educational research. This results in a specific Norwegian research model, guided by a mode of governance of programs, that maintains social values traditionally strong in Nordic societies. [less ▲]

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See detailHigher Education Systems and Institutions, Luxembourg
Harmsen, Robert UL; Powell, Justin J W UL

in Shin, J.C.; Teixeira, P. (Eds.) Encyclopedia of International Higher Education Systems and Institutions (in press)

Bordered by Belgium, France, and Germany, Luxembourg is one of the three main seats of the European Union’s institutions. The Grand Duchy of Luxembourg sits at the crossroads between Europe’s Germanic and ... [more ▼]

Bordered by Belgium, France, and Germany, Luxembourg is one of the three main seats of the European Union’s institutions. The Grand Duchy of Luxembourg sits at the crossroads between Europe’s Germanic and Francophone language communities. The country has experienced remarkable migratory flows, resulting in an ethnically hyper-diverse and multilingual population. Reflecting this cultural diversity, the educational system at all levels emphasizes language learning. Historically an agrarian society, a century ago it developed a very strong steelmaking industry and over the past decades has witnessed extraordinary growth in its financial services sector. Established to broaden the economic bases of the country, thus reducing overreliance on the steel and banking industries, yet against considerable pecuniary and ideological resistance, the national flagship University of Luxembourg (UL) was founded in 2003 upon initiative of a small group of elite decisionmakers. As a private, government-dependent institution (établissement public) directed by a Board of Governors (Conseil de Gouvernance), the university’s major funding is provided by the state, although its third-party funding has increased rapidly and substantially. Ironically, while spatial mobility is everywhere supported, Luxembourg has invested considerable capital and strategic planning in establishing its own national university. It aims to compete globally by concentrating its intellectual and financial resources and by building on the country’s strengths and priorities. The state took this ambitious step in scientific capacity-building in founding a research-oriented university, in so doing also providing a stay-at-home alternative for Luxembourg’s youth, traditionally educated abroad. The long-standing custom of educating elites in other countries was ostensibly justified by the establishment of cosmopolitan, Europe-wide networks. Today, rising international competition and supranational coordination have increased pressure on Luxembourg to grow its higher education system and thus also foster educational and scientific innovation. The University provides a means to diversify the economy and to integrate citizens from diverse cultural background, while the polity remains dominated by local elites. Oriented towards the Grand Duchy’s unique context—small size, but simultaneously flourishing center of European governance and international business—the University was founded upon the principles of internationality, multilingualism, and interdisciplinarity. [less ▲]

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See detailHigher Education Systems and Institutions, Qatar
Crist, John T.; Powell, Justin J W UL

in Shin, J.C.; Teixeira, P. (Eds.) Encyclopedia of International Higher Education Systems and Institutions (in press)

The tertiary education sector in Qatar has grown very rapidly, viewed as key to national development on the path to the “knowledge society,” also to reduce its reliance on limited natural resources. The ... [more ▼]

The tertiary education sector in Qatar has grown very rapidly, viewed as key to national development on the path to the “knowledge society,” also to reduce its reliance on limited natural resources. The states of the Islamic world, with a significant but long-obscured past of scientific achievement, are witnessing a contemporary renaissance. The establishment of international offshore, satellite or branch campuses in the Persian or Arabian Gulf region emphasizes the dynamism of higher education development. With a history of several decades, Qatar’s higher education and science policies join contrasting strategies prevalent in capacity building attempts worldwide – to emulate the strongest global exemplars through importation as well as to cultivate local, indigenous assets. Thus, university-related and science policymaking on the peninsula has been designed to directly connect with global developments while building local capacity in higher education and scientific productivity [less ▲]

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See detailLIPS vs MOSA: a Replicated Em- pirical Study on Automated Test Case Generation
Panichella, Annibale UL; Kifetew, Fitsum; Tonella, Paolo

in International Symposium on Search Based Software Engineering (SSBSE) 2017 (2017, September 09)

Replication is a fundamental pillar in the construction of scientific knowledge. Test data generation for procedural programs can be tackled using a single-target or a many-objective approach. The ... [more ▼]

Replication is a fundamental pillar in the construction of scientific knowledge. Test data generation for procedural programs can be tackled using a single-target or a many-objective approach. The proponents of LIPS, a novel single-target test generator, conducted a preliminary empirical study to compare their approach with MOSA, an alternative many-objective test generator. However, their empirical investigation suffers from several external and internal validity threats, does not consider complex programs with many branches and does not include any qualitative analysis to interpret the results. In this paper, we report the results of a replication of the original study designed to address its major limitations and threats to validity. The new findings draw a completely different picture on the pros and cons of single-target vs many-objective approaches to test case generation. [less ▲]

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See detailAttentional processing of itch
van Laarhoven, Antoinette; van Damme, Stefaan; Lavrijsen et al

in Psychological Research (2017)

Itch is a prevalent somatosensory symptom thatcan be highly disabling , because it is likely to drawattention and, as a resu lt, may interfere with the perfor-mance of daily activities. Yet, research ... [more ▼]

Itch is a prevalent somatosensory symptom thatcan be highly disabling , because it is likely to drawattention and, as a resu lt, may interfere with the perfor-mance of daily activities. Yet, research experimentallyinvestigating attention to itch is lacking. In this study weaimed to investigate attentional processing of itch usingmultiple behavioral attention tasks. Forty-one healthyparticipants performed (1) a modified Stroop task with itch-related words, (2) a dot-probe task with itch-related pic-tures, and (3) a rece ntly developed somatosensory attentiontask in which the effect of experimentally induced itch onthe localization of visual targets was examined. Addition-ally, a number of self-report questionnaires related tosomatosensory attentional processing were administered.Results indicated that participants’ attention was biasedtoward itch-related words and pictures assessed by meansof the dot- probe and modified Stroop task, respectively. Forthe somatosensory attention task, results showed that itchdid not significantly influence the allocation of attention.However, when taking into account the time course ofattention during the itch stimulus, data suggested thatparticipants tended to disengage attention away during theitch stimulus. This is the first study that indicates anattentional bias for itch, using methods that have previouslybeen validated for other sensations such as pain. In addi-tion, the newly developed somatosensory attention taskmay reflect the time course of attention toward a tonic itchstimulus. [less ▲]

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See detailThe effect of training morphosyntactic markers in German and in French on multilingual fifth-graders' spelling.
Bilici, Natalia UL; Ugen, Sonja UL; Weth, Constanze UL

Scientific Conference (2017, June 26)

Many studies focussing on spelling in French and German languages show that, even by the end of the primary school, pupils have difficulties to encode morphosyntactic information in their writing ... [more ▼]

Many studies focussing on spelling in French and German languages show that, even by the end of the primary school, pupils have difficulties to encode morphosyntactic information in their writing. Particularly problematic are, for instance, capitalisation of nouns in German (Betzel 2014) or plural markers in French (Fayol et al. 2006), because they are inaudible and require knowledge that goes beyond simple phoneme-grapheme correspondences. Our paper presents how multilingual learners deal with silent morphosyntactic markers in French and German and shows the effects of an intervention training on children's spelling performance. In total our study included 228 multilingual fifth graders (mean age 11 years) with four years instruction in German and two years instruction in French. They were assigned to an intervention (n=137) and to a control group (n=91) based on the results of a spelling test in French and German. This was done by creating performance groups that were, in a second step, attributed to one of the experimental groups taking their performance into account (quasi-randomised procedure). The French test consisted of three word categories of different difficulty (nouns, verbs, adjectives). For adjectives only, position (pre- vs. post-nominal) was also manipulated. The German test focussed on three lexical-semantic characteristics (concrete nouns, abstract nouns, nominalizations) and four syntactical positions (determinant+noun, determinant+adjective+noun, adjective+noun, noun) frequent words and pseudo-words. Additionally, word frequency was manipulated within each language (frequent words vs. pseudowords). These difficulty levels have been based on the literature published on monolingual learners (French: Totereau et al. (2014), German: Funke (2005); Guenther (2007); Betzel (2014)). The children participated in 12 intervention sessions of 20 minutes each (six in German and six in French, the order was counterbalanced). Children of the intervention group were trained to improve their morphosyntactic awareness and thus spelling performance of French plurals and German capitalization. The control group received the same amount of language input than the intervention group, but they were trained on another aspect of language i.e. listening comprehension. Results from the pre-test show that multilingual children acquiring German and French show similar difficulty patterns as German or French monolinguals. The post-test shows that the intervention group improved significantly in both their German and French spelling in comparison to the control group in all word and pseudo-word categories and positions. The intervention group's performance increased especially on pseudo-words, indicating that the training had an effect on children's spelling according to syntactic regularities. The study results are specifically important to better understand the learning processes of morphosyntactic spelling in primary school. The implications on the teaching methods will be discussed. [less ▲]

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See detailASIMUT project: Aid to SItuation Management based on MUltimodal, MUltiUAVs, MUltilevel acquisition Techniques
Bouvry, Pascal UL; Chaumette, Serge; Danoy, Grégoire UL et al

in DroNet'17 Proceedings of the 3rd Workshop on Micro Aerial Vehicle Networks, Systems, and Applications (2017, June 23)

This document summarizes the activities and results of the ASIMUT project (Aid to SItuation Management based on MUltimodal, MUltiUAVs, MUltilevel acquisition Techniques) carried out by the consortium ... [more ▼]

This document summarizes the activities and results of the ASIMUT project (Aid to SItuation Management based on MUltimodal, MUltiUAVs, MUltilevel acquisition Techniques) carried out by the consortium composed of Thales, Fraunhofer IOSB, Fly-n-Sense, University of Bordeaux and University of Luxembourg. Funded by the European Defence Agency (EDA), the objectives of the ASIMUT project are to design, implement and validate algorithms that will allow the efficient usage of autonomous swarms of Unmanned Aerial Vehicles (UAVs) for surveillance missions. [less ▲]

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See detailWho Trade at Better Prices?
Wolff, Christian UL; Ekkayokkaya, Manapol

E-print/Working paper (2017)

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See detailLocalisation résidentielle de la population étrangère selon la nationalité et la structure urbaine au Luxembourg
Pigeron-Piroth, Isabelle UL; Heinz, Andreas UL; Caruso, Geoffrey UL

Presentation (2017, June 19)

The number of foreigners living in Luxembourg is still rising and represents today about 48% of the inhabitants. This study focuses on the description and mapping of the place of residence for the ... [more ▼]

The number of foreigners living in Luxembourg is still rising and represents today about 48% of the inhabitants. This study focuses on the description and mapping of the place of residence for the different nationalities living in Luxembourg. It seeks to underline differences through indicators built from the 2011 census data. We focus on the territorial distribution of the different nationalities by taking into account the urban structure and distance to jobs. If differences according to nationalities in the residential behavior of households can be empirically identified they may raise issues of spatial equity and (un)equal accessibility to job market. We analyse whether the geographic location of different nationalities in Luxembourg is linked to urbanisation level, the distance to the “poles d´emploi” or general accessibility to jobs. [less ▲]

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See detailLocalisation résidentielle de la population étrangère selon la nationalité et la structure urbaine au Luxembourg
Pigeron-Piroth, Isabelle UL; Heinz, Andreas UL; Caruso, Geoffrey UL

E-print/Working paper (2017)

The number of foreigners living in Luxembourg is still rising and represents today about 48% of the inhabitants. This study focuses on the description and mapping of the place of residence for the ... [more ▼]

The number of foreigners living in Luxembourg is still rising and represents today about 48% of the inhabitants. This study focuses on the description and mapping of the place of residence for the different nationalities living in Luxembourg. It seeks to underline differences through indicators built from the 2011 census data. We focus on the territorial distribution of the different nationalities by taking into account the urban structure and distance to jobs. If differences according to nationalities in the residential behavior of households can be empirically identified they may raise issues of spatial equity and (un)equal accessibility to job market. We analyse whether the geographic location of different nationalities in Luxembourg is linked to urbanisation level, the distance to the “poles d´emploi” or general accessibility to jobs. [less ▲]

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See detailRecent results on conservative and symmetric n-ary semigroups
Kiss, Gergely UL; Devillet, Jimmy UL; Marichal, Jean-Luc UL

Scientific Conference (2017, June 16)

See attached file

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See detailOn conservative and associative operations on finite chains
Devillet, Jimmy UL; Couceiro, Miguel; Marichal, Jean-Luc UL

Scientific Conference (2017, June 16)

See attached file

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See detailWhat industry wants from academia in software testing? Hearing practitioners’ opinions
Garousi, Vahid UL; Felderer, Michael; Kuhrmann, Marco et al

in Proceedings of International Conference on Evaluation and Assessment in Software Engineering (EASE) (2017, June 15)

The level of industry-academia collaboration (IAC) in software engineering in general and in software testing in particular is quite low. Many researchers and practitioners are not collaborating with the ... [more ▼]

The level of industry-academia collaboration (IAC) in software engineering in general and in software testing in particular is quite low. Many researchers and practitioners are not collaborating with the “other side” to solve industrial problems. To shed light on the above issue and to characterize precisely what industry wants from academia in software testing, we solicited practitioners’ opinions on their challenges in different testing activities and also the particularly relevant topics that they want the research community to work on. This short paper aims to draw the community’s attention to the important issue of strengthening IAC with the hope of more IAC in software testing in the areas of most importance to the industry. [less ▲]

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See detailIndustry-academia collaborations in software engineering: an empirical analysis of challenges, patterns and anti-patterns in research projects
Garousi, Vahid UL; Felderer, Michael; Fernandes, João et al

in Proceedings of International Conference on Evaluation and Assessment in Software Engineering (EASE) (2017, June 15)

Research collaboration between industry and academia supports improvement and innovation in industry and helps to ensure industrial relevance in academic research. However, many researchers and ... [more ▼]

Research collaboration between industry and academia supports improvement and innovation in industry and helps to ensure industrial relevance in academic research. However, many researchers and practitioners believe that the level of joint industry-academia collaboration (IAC) in software engineering (SE) research is still relatively low, compared to the amount of activity in each of the two communities. The goal of the empirical study reported in this paper is to exploratory characterize the state of IAC with respect to a set of challenges, patterns and anti-patterns identified by a recent Systematic Literature Review study. To address the above goal, we gathered the opinions of researchers and practitioners w.r.t. their experiences in IAC projects. Our dataset includes 47 opinion data points related to a large set of projects conducted in 10 different countries. We aim to contribute to the body of evidence in the area of IAC, for the benefit of researchers and practitioners in conducting future successful IAC projects in SE. As an output, the study presents a set of empirical findings and evidence-based recommendations to increase the success of IAC projects. [less ▲]

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