University of Luxembourg

About: University of Luxembourg is a education organization based out in Luxembourg, Luxembourg. It is known for research contribution in the topics: Population & European union. The organization has 4744 authors who have published 22175 publications receiving 381824 citations.

Grain boundaries in Cu(In, Ga)(Se, S) 2 thin-film solar cells

Abstract: The paper reviews the current status of the research on grain boundaries in polycrystalline Cu(In, Ga)(S, Se)2 alloys used as absorber materials for thin-film solar cells. We discuss the different concepts that are available to explain the relatively low electronic activity of grain boundaries in these materials. Numerical simulations that have been undergone so far to model the polycrystalline solar cells are briefly summarized. In addition, we give an overview on the experiments that have been conducted so far to elucidate the structural, defect-chemical, and electronic properties of grain boundaries in Cu(In, Ga)(S, Se)2 thin-films.

Combining multi-objective search and constraint solving for configuring large software product lines

Abstract: Software Product Line (SPL) feature selection involves the optimization of multiple objectives in a large and highly constrained search space. We introduce SATIBEA, that augments multi-objective search-based optimization with constraint solving to address this problem, evaluating it on five large real-world SPLs, ranging from 1,244 to 6,888 features with respect to three different solution quality indicators and two diversity metrics. The results indicate that SATIBEA statistically significantly outperforms the current state-of-the-art (p

Indicators and Targets for Social Inclusion in the European Union

Abstract: In December 2001, the Laeken European Council adopted a set of commonly agreed and defined indicators for social inclusion. These should play a central role in monitoring the performance of Member States in making progress towards the key EU objectives in this area set by the Nice European Council in 2000, and represent a major step forward in the development of EU social policy. This article reviews the scientific and political basis on which the indicators were selected, and the implications for the future development of policy-making in Europe. It describes the key features of the indicators and some of the ways in which they can be developed. Finally, it investigates some important issues that need to be addressed when setting quantitative targets in the context of the social inclusion process.

Cyberbullying as an Act of Revenge

Abstract: Despite significant overlaps between victim status in traditional forms of bullying and cyberbullying, and qualitative results about self-reported reasons for cyberbullying, the role of revenge and retaliation as a motive to engage in acts of cyberbullying has not yet been examined systematically. As a first step, this study investigates whether and to what extent traditional victims, when they become cyberbullies, actually choose their former (traditional) perpetrators as targets of their own cyberbullying behavior. Furthermore, the impact of individual differences in relevant traits, such as vengefulness and justice sensitivity, on the choice of cybervictims is examined. Data from 473 students were collected via an online survey. Of these, 149 were identified as traditional victims/cyberbullies. Results show that traditionally bullied students indeed tend to choose their former perpetrators as cybervictims, and that individual differences play a role in the choice of their victims. Implications for further research, as well as for interventions and prevention programmes, are discussed.