Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailDesigning Robust Volunteer-based Evolutionary Algorithms
Jimenez Laredo, Juan Luis UL; Bouvry, Pascal UL; Lombraña Gonzalez, Daniel et al

in Genetic Programming and Evolvable Machines (2014)

This paper tackles the design of scalable and fault-tolerant evolutionary algorithms computed on volunteer platforms. These platforms aggregate computational resources from contributors all around the ... [more ▼]

This paper tackles the design of scalable and fault-tolerant evolutionary algorithms computed on volunteer platforms. These platforms aggregate computational resources from contributors all around the world. Given that resources may join the system only for a limited period of time, the challenge of a volunteer-based evolutionary algorithm is to take advantage of a large amount of computational power that in turn is volatile. The paper analyzes first the speed of convergence of massively parallel evolutionary algorithms. Then, it provides some guidance about how to design efficient policies to overcome the algorithmic loss of quality when the system undergoes high rates of transient failures, i.e. computers fail only for a limited period of time and then become available again. In order to provide empirical evidence, experiments were conducted for two well-known problems which require large population sizes to be solved, the first based on a genetic algorithm and the second on genetic programming. Results show that, in general, evolutionary algorithms undergo a graceful degradation under the stress of losing computing nodes. Additionally, new available nodes can also contribute to improving the search process. Despite losing up to 90% of the initial computing resources, volunteer-based evolutionary algorithms can find the same solutions in a failure-prone as in a failure-free run. [less ▲]

Detailed reference viewed: 198 (5 UL)
Full Text
Peer Reviewed
See detailDesigning Set of Binary Sequences and Space-Time Receive Filter for Moving Targets in Colocated MIMO Radar Systems
Feraidooni, Mohammad Mahdi; Alaee-Kerahroodi, Mohammad UL; Imani, Sadjad et al

in 2019 20th International Radar Symposium (IRS) (2019)

Detailed reference viewed: 101 (1 UL)
Full Text
Peer Reviewed
See detailDesigning Sets of Binary Sequences for MIMO Radar Systems
Alaee-Kerahroodi, Mohammad UL; Modarres-Hashemi, Mahmoud; Naghsh, Mohammad Mahdi

in IEEE Transactions on Signal Processing (2019), 67(13), 3347--3360

Detailed reference viewed: 77 (2 UL)
See detailDesigning Sustainable Technologies, Products and Policies
Benetto, Enrico; Gericke, Kilian UL; Guiton, Mélanie

Book published by Springer (2018)

This book provides insight into the implementation of Life Cycle approaches along the entire business value chain, supporting environmental, social and economic sustainability related to the development ... [more ▼]

This book provides insight into the implementation of Life Cycle approaches along the entire business value chain, supporting environmental, social and economic sustainability related to the development of industrial technologies, products, services and policies; and the development and management of smart agricultural systems, smart mobility systems, urban infrastructures and energy for the built environment. The book is based on papers presented at the 8th International Life Cycle Management Conference that took place from September 3-6, 2017 in Luxembourg, and which was organized by the Luxembourg Institute of Science and Technology (LIST) and the University of Luxembourg in the framework of the LCM Conference Series. [less ▲]

Detailed reference viewed: 191 (4 UL)
Full Text
Peer Reviewed
See detailDesigning the (Most) Mobile University: The Centrality of International Student Mobility in Luxembourg’s Higher Education Policy Discourse
Kmiotek-Meier, Emilia Alicja UL; Karl, Ute; Powell, Justin J W UL

in Higher Education Policy (2020), 33

The nexus of national educational and migration policies and international student mobility (ISM) in Europe becomes strikingly visible in Luxembourg. ISM is central for higher education policy in ... [more ▼]

The nexus of national educational and migration policies and international student mobility (ISM) in Europe becomes strikingly visible in Luxembourg. ISM is central for higher education policy in Luxembourg, but also for larger questions of social integration and economic development. Based on a discourse analysis of the political debates surrounding the foundation of the University of Luxembourg in 2003, we analyze how and why ISM became a cornerstone of higher education policy in Luxembourg. Our findings reveal that, on the one hand, incoming student mobility — and the establishment of an international research university — was and is seen as a means of competing for the best and brightest, regionally and globally, and of securing human resources to satisfy a booming, internationalized labor market. On the other hand, outgoing student mobility has traditionally been viewed as the main mechanism to establish international networks across Europe and foster elites back home. Both incoming and outgoing mobility are thought necessary to establish and maintain a competitive and sustainable knowledge economy. Reconstructing the underlying rationales behind the support for ISM as the key to higher education policy, we explain why Luxembourg currently has the highest proportion of ISM worldwide. [less ▲]

Detailed reference viewed: 259 (25 UL)
Full Text
Peer Reviewed
See detailDesigning the test booklets for Rasch model calibration in a large-scale assessment with reference to numerous moderator variables and several ability dimensions
Kubinger, Klaus; Hohensinn, Christine; Hofer, Sandra et al

in Educational Research and Evaluation (2011), 17(6), 483-495

In large-scale assessments, it usually does not occur that every item of the applicable item pool is administered to every examinee. Within item response theory (IRT), in particular the Rasch model (1960 ... [more ▼]

In large-scale assessments, it usually does not occur that every item of the applicable item pool is administered to every examinee. Within item response theory (IRT), in particular the Rasch model (1960), this is not really a problem because item calibration works nevertheless. The different test booklets only need to be conceptualized according to a connected incomplete block design. Yet, connectedness of such a design should best be fulfilled severalfold, since deletion of some items in the course of the item pool’s IRT calibration may become necessary. The real challenge, however, is to meet constraints determined by numerous moderator variables such as different response formats and several topics of content – all the more so, if several ability dimensions are under consideration, the testing duration is strongly limited or individual scoring and feedback is an issue. In this article, we offer a report of how to deal with the resulting problems. Experience is based on the governmental project of the Austrian Educational Standards (Kubinger et al., 2007). [less ▲]

Detailed reference viewed: 111 (3 UL)
Full Text
Peer Reviewed
See detailDesigning with Genius Loci: An Approach to Polyvocality in Interactive Heritage Interpretation
Tsenova, Violeta UL; Wood, Gavin; Kirk, David

in Multimodal Technologies and Interaction (2022), 6(6), 41

Co-design with communities interested in heritage has oriented itself towards designing for polyvocality to diversify the accepted knowledges, values and stories associated with heritage places. However ... [more ▼]

Co-design with communities interested in heritage has oriented itself towards designing for polyvocality to diversify the accepted knowledges, values and stories associated with heritage places. However, engagement with heritage theory has only recently been addressed in HCI design, resulting in some previous work reinforcing the same realities that designers set out to challenge. There is need for an approach that supports designers in heritage settings in working critically with polyvocality to capture values, knowledges, and authorised narratives and reflect on how these are negotiated and presented in the designs created. We contribute “Designing with Genius Loci” (DwGL)—our proposed approach to co-design for polyvocality. We conceptualised DwGL through long-term engagement with volunteers and staff at a UK heritage site. First, we used ongoing recruitment to incentivise participation. We held a series of making workshops to explore participants’ attitudes towards authorised narratives. We built participants’ commitments to collaboration by introducing the common goal of creating an interactive digital design. Finally, as we designed, we enacted our own commitments to the heritage research and to participants’ experiences. These four steps form the backbone of our proposed approach and serve as points of reflexivity. We applied DwGL to co-creating three designs: Un/Authorised View, SDH Palimpsest and Loci Stories, which we present in an annotated portfolio. Grounded in research through design, we reflect on working with the proposed approach and provide three lessons learned, guiding further research efforts in this design space: (1) creating a conversation between authorised and personal heritage stories; (2) designing using polyvocality negotiates voices; and (3) designs engender existing qualities and values. The proposed approach places polyvocality foremost in interactive heritage interpretation and facilitates valuable discussions between the designers and communities involved. [less ▲]

Detailed reference viewed: 26 (1 UL)
Full Text
See detailDesigualdades interseccionales en la ciencia
Kozlowski, Diego UL

Speeches/Talks (2022)

Detailed reference viewed: 26 (0 UL)
Full Text
Peer Reviewed
See detailLa désinstutionnalisation psychiatrique. Un phénomène introuvable en Belgique dans les années 1960 et 1970?
Majerus, Benoît UL

in Guillemain, Hervé; Klein, Alexandre; Thifault, Marie-Claude (Eds.) Fin de l’asile ?: histoire de la déshospitalisation psychiatrique dans l’espace francophone au XXe siècle (2018)

Detailed reference viewed: 204 (7 UL)
See detailDesintegration, Deprivation, Autoritarismus und Bedrohungsgefühle
Hadjar, Andreas UL

in Rippl, Susanne; Baier, Dirk; Boehnke, Klaus (Eds.) Europa auf dem Weg nach rechts? Die EU-Osterweiterung und ihre Folgen für politische Einstellungen in Deutschland, Polen und der Tschechischen Republik (2007)

Detailed reference viewed: 92 (0 UL)
Peer Reviewed
See detailDesirable Tie-breaking Rules in Collective Decision Making
Pigozzi, Gabriella UL; Slavkovik, Marija UL; van der Torre, Leon UL

in Annales du LAMSADE (2008)

Judgment aggregation (JA) studies how to aggregate individual judgments to form collective decisions. Examples are expert panels, legal courts, boards, and councils. The problems investigated in this new ... [more ▼]

Judgment aggregation (JA) studies how to aggregate individual judgments to form collective decisions. Examples are expert panels, legal courts, boards, and councils. The problems investigated in this new field are relevant and common to many situations. Nevertheless, the existing procedures are idealized and, likewise the related problems of preference aggregation in social choice theory, the field is plagued by impossibility theorems. In this paper, we extend standard JA in order to offer a more realistic framework and to escape the impossibility results. We propose to distinguish between abstainers and neutral judgment as well as to model the notion of confidence a group member may have in the decision rule by assigning to each criterion a normalized weight. We then show how this new framework may help us to avoid indecision in most cases. [less ▲]

Detailed reference viewed: 86 (1 UL)
Full Text
Peer Reviewed
See detailThe desire to belong: Social identification as a predictor of treatment outcome in social anxiety disorder
Meuret, Alicia E.; Chmielewski, Michael; Steele, Ashton M. et al

in Behaviour research and therapy (2016), 81

Detailed reference viewed: 126 (3 UL)
Full Text
See detailDesired Mobilities
Petry, David UL; Marcus, Noémie

Article for general public (2016)

Detailed reference viewed: 79 (2 UL)
Full Text
Peer Reviewed
See detailDesires and intentions for fatherhood: A comparison of childless gay and heterosexual men in Germany
Kranz, Dirk; Busch, Holger; Niepel, Christoph UL

in Journal of Family Psychology (2018), 32(8), 995-1004

Detailed reference viewed: 126 (4 UL)
Full Text
See detailDésistement : variations sur le fond et la procédure
Menetrey, Séverine UL

in JurisNews – Arbitrage et procédure civile (2014)

Detailed reference viewed: 103 (8 UL)
Full Text
Peer Reviewed
See detailDeskilling HPL - Using an Evolutionary Algorithm to Automate Cluster Benchmarking
Dunlop, Dominic UL; Varrette, Sébastien UL; Bouvry, Pascal UL

in Proceedings of 8th Intl. conf. on Parallel Processing and Applied Mathematics (PPAM 2009) (2009, September), 6068(LNCS), 102--114

The High-Performance Linpack (HPL) benchmark is the ac- cepted standard for measuring the capacity of the world’s most powerful computers, which are ranked twice yearly in the Top 500 List. Since just a ... [more ▼]

The High-Performance Linpack (HPL) benchmark is the ac- cepted standard for measuring the capacity of the world’s most powerful computers, which are ranked twice yearly in the Top 500 List. Since just a small deficit in performance can cost a computer several places, it is impor- tant to tune the benchmark to obtain the best possible result. However, the adjustment of HPL’s seventeen configuration parameters to obtain maximum performance is a time-consuming task that must be performed by hand. In a previous paper, we provided a preliminary study that proposed the tuning of HPL parameters by means of an Evolutionary Algorithm. The approach was validated on a small cluster hosted at the University of Luxembourg. In this article, we extend this initial work by describing Acbea, a fully-automatic benchmark tuning tool that performs both the configuration and installation of HPL followed by an automatic search for optimized parameters that will lead to the best benchmark results. Experiments have been conducted to validate this tool on several clusters, exploiting in particular the Grid’5000 infrastructure. [less ▲]

Detailed reference viewed: 114 (2 UL)
See detailDeskription und Effektanalyse von Formen der Krankheitsbewältigung bei Tumorpatienten.
Filipp, Sigrun-Heide; Ferring, Dieter UL; Klauer, Thomas

Report (1986)

Detailed reference viewed: 62 (0 UL)