References of "2014"
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See detailPsychologie in Luxemburg - Ein Handbuch
Steffgen, Georges UL; Michaux, Gilles UL; Ferring, Dieter UL

Book published by University of Luxembourg/Société Luxembourgeoise de Psychologie A.s.b.l. - Editions Guy Binsfeld (2014)

Psychologie in Luxemburg: Ein Handbuch stellt das Fachgebiet der Psychologie in seinen vielfältigen Facetten vor. Neben dem Blick auf die historische Entwicklung des Fachs und der Beschreibung der ... [more ▼]

Psychologie in Luxemburg: Ein Handbuch stellt das Fachgebiet der Psychologie in seinen vielfältigen Facetten vor. Neben dem Blick auf die historische Entwicklung des Fachs und der Beschreibung der nationalen Psychologenverbände liefert das Buch einen umfassenden Ueberblick der aktuellen Anwendungsfelder sowie der schulischen und universitären Aus- und Weiterbildung in Psychologie. Vervollständigt wird das Handbuch durch die Darstellung der international vernetzten, wissenschaftlichen psychologischen Forschung in Luxemburg. Das Handbuch erlaubt es, sich ein fundiertes Bild über die vielfältigen aktuellen Angebote der Psycholgie in Luxemburg zu verschaffen. [less ▲]

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See detailChIP-seq profiling of the active chromatin marker H3K4me3 and PPARγ, CEBPα and LXR target genes in human SGBS adipocytes
Galhardo, Mafalda Sofia UL; Sinkkonen, Lasse UL; Berninger, Philipp et al

in Genomics Data (2014), 2

Transcription factors (TFs) represent key factors to establish a cellular phenotype. It is known that several TFs could play a role in disease, yet less is known so far how their targets overlap. We ... [more ▼]

Transcription factors (TFs) represent key factors to establish a cellular phenotype. It is known that several TFs could play a role in disease, yet less is known so far how their targets overlap. We focused here on identifying the most highly induced TFs and their putative targets during human adipogenesis. Applying chromatin immunoprecipitation coupled with deep sequencing (ChIP-Seq) in the human SGBS pre-adipocyte cell line, we identified genes with binding sites in their vicinity for the three TFs studied, PPARγ, CEBPα and LXR. Here we describe the experimental design and quality controls in detail for the deep sequencing data and related results published by Galhardo et al. in Nucleic Acids Research 2014 [1] associated with the data uploaded to NCBI Gene Expression Omnibus (). [less ▲]

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See detailChoir singing for Young @ Heart. Between Music Education and Artistry
Sagrillo, Damien UL

in Sagrillo, Damien; Ferring, Dieter (Eds.) Music (Education) from the Cradle to the Grave (2014)

The following article describes the situation of choir singing in Luxembourg at the beginning of the second decade of the 21st century. In comparison with other community music ensembles, it explains the ... [more ▼]

The following article describes the situation of choir singing in Luxembourg at the beginning of the second decade of the 21st century. In comparison with other community music ensembles, it explains the impact or non-impact of music education on the recruitment of new members. It shows, with the help of statistical investigations and in giving some examples, how the phenomenon of singing has become, not only concerning choirs, a matter of older people. [less ▲]

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See detailPerformance Analysis of Cloud Environments on Top of Energy-Efficient Platforms Featuring Low Power Processors
Plugaru, Valentin UL; Varrette, Sébastien UL; Bouvry, Pascal UL

in Proc. of the 6th IEEE Intl. Conf. on Cloud Computing Technology and Science (CloudCom'14) (2014, December)

Energy efficiency remains a prevalent concern in the development of future HPC systems. Thus the next generations of supercomputers are foreseen to be developed as hybrid systems featuring traditional ... [more ▼]

Energy efficiency remains a prevalent concern in the development of future HPC systems. Thus the next generations of supercomputers are foreseen to be developed as hybrid systems featuring traditional processors, accelerators (such as GPGPUs) and/or low-power processor architectures (ARM, Intel Atom, etc.) primarily designed for the mobile and embedded de- vices market. Also, a confluence with the Cloud Computing (CC) paradigm is anticipated, driven by economic sustainability factors. However, the performance impact of running Cloud middleware on such crossbred platforms remains to be explored, especially on low power processors. In this context, this paper brings two main contributions: (1) the design and implementation of BACH, a framework able to execute automated performance evaluations of Cloud and HPC cluster environments; (2) the concrete validation of the framework for the evaluation of the modern OpenStack Infrastructure-as-a-Service (IaaS) middleware, deployed on a cutting-edge cluster based on ultra low power energy efficient ARM processors. The efficiency in itself is measured with synthetic HPC benchmarks: HPCC (incorporating the well known HPL), HPCG and real world applications from the bioinformatics domain - GROMACS and ABySS. The experimental evaluation revealed an average 24% performance drop in performance for compute-intensive tasks and 65.6% drop in communication capacity compared to the native environment without the IaaS solution, showing a non-negligible impact on the tested platform. To our knowledge, this is one of the first studies of this type, since deployment attempts of the OpenStack infrastructure on top of ARM platforms are in early stages, and are generally performed only for demonstration purposes. [less ▲]

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See detailAcquisition of a baseball-pitch through observation: What information is extracted?
Ghorbani, Saeed; Bund, Andreas UL

in American Journal of Sport Science and Medicine (2014), 2(6A), 18-21

The purpose of the present study was to compare the relative effects of observing video, stick figure and point-light model demonstrations on acquisition a Baseball pitch. Participants (ns = 41) in ... [more ▼]

The purpose of the present study was to compare the relative effects of observing video, stick figure and point-light model demonstrations on acquisition a Baseball pitch. Participants (ns = 41) in demonstration and control groups performed 5 trials in pretest, three blocks of 10 trials in acquisition phase, and two retention tests of 5 trials in 10 minutes and one week later. Participants´ performances were assessed by two raters at the level of overall movement and individual movement phases. Results showed similarities between demonstration groups in acquisition phase and early retention test. Participants showed a significant improvement in stride and follow-through phases from pretest to acquisition blocks. The findings are discussed in terms of theoretical and methodological backgrounds. [less ▲]

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See detailStadtentstehungsgeschichten aus Nordwesteuropa im Mittelalter
Pauly, Michel UL

in Jungblut, Marie-Paule; Pauly, Michel; Reif, Heinz (Eds.) Luxemburg, eine Stadt in Europa. Schlaglichter auf mehr als 1000 Jahre europäische Stadtgeschichte (2014)

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See detailPhishStorm: Detecting Phishing With Streaming Analytics
Marchal, Samuel UL; François, Jérôme UL; State, Radu UL et al

in IEEE Transactions on Network and Service Management (2014), 11(December), 458-471

Despite the growth of prevention techniques, phishing remains an important threat since the principal countermeasures in use are still based on reactive URL blacklisting. This technique is inefficient due ... [more ▼]

Despite the growth of prevention techniques, phishing remains an important threat since the principal countermeasures in use are still based on reactive URL blacklisting. This technique is inefficient due to the short lifetime of phishing Web sites, making recent approaches relying on real-time or proactive phishing URL detection techniques more appropriate. In this paper, we introduce PhishStorm, an automated phishing detection system that can analyze in real time any URL in order to identify potential phishing sites. PhishStorm can interface with any email server or HTTP proxy. We argue that phishing URLs usually have few relationships between the part of the URL that must be registered (low-level domain) and the remaining part of the URL (upper-level domain, path, query). We show in this paper that experimental evidence supports this observation and can be used to detect phishing sites. For this purpose, we define the new concept of intra-URL relatedness and evaluate it using features extracted from words that compose a URL based on query data from Google and Yahoo search engines. These features are then used in machine-learning-based classification to detect phishing URLs from a real dataset. Our technique is assessed on 96 018 phishing and legitimate URLs that result in a correct classification rate of 94.91% with only 1.44% false positives. An extension for a URL phishingness rating system exhibiting high confidence rate ( $>$ 99%) is proposed. We discuss in this paper efficient implementation patterns that allow real-time analytics using Big Data architectures such as STORM and advanced data structures based on the Bloom filter. [less ▲]

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See detailReverse Product-Scanning Multiplication and Squaring on 8-bit AVR Processors
Liu, Zhe UL; Seo, Hwajeong; Groszschädl, Johann UL et al

in Hui, Lucas C. K.; Qing, Sihan; Shi, Elaine (Eds.) et al Information and Communications Security - 16th International Conference, ICICS 2014, Hong Kong, China, December 16-17, 2014. Proceedings (2014, December)

High performance, small code size, and good scalability are important requirements for software implementations of multi-precision arithmetic algorithms to fit resource-limited embedded systems. In this ... [more ▼]

High performance, small code size, and good scalability are important requirements for software implementations of multi-precision arithmetic algorithms to fit resource-limited embedded systems. In this paper, we describe optimization techniques to speed up multi-precision multiplication and squaring on the AVR ATmega series of 8-bit microcontrollers. First, we present a new approach to perform multi-precision multiplication, called Reverse Product Scanning (RPS), that resembles the hybrid technique of Gura et al., but calculates the byte-products in the inner loop in reverse order. The RPS method processes four bytes of the two operands in each iteration of the inner loop and employs two carry-catcher registers to minimize the number of add instructions. We also describe an optimized algorithm for multi-precision squaring based on the RPS technique that is, depending on the operand length, up to 44.3% faster than multiplication. Our AVR Assembly implementations of RPS multiplication and RPS squaring occupy less than 1 kB of code space each and are written in a parameterized fashion so that they can support operands of varying length without recompilation. Despite this high level of flexibility, our RPS multiplication outperforms the looped variant of Hutter et al.'s operand-caching technique and saves between 40 and 51% of code size. We also combine our RPS multiplication and squaring routines with Karatsuba's method to further reduce execution time. When executed on an ATmega128 processor, the "karatsubarized RPS method" needs only 85k clock cycles for a 1024-bit multiplication (or 48k cycles for a squaring). These results show that it is possible to achieve high performance without sacrificing code size or scalability. [less ▲]

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See detailPanel Discussion on Sustainable Neighbourhoods: A view on cooperative housing models
Carr, Constance UL

Presentation (2014, December)

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See detailAltern und Lebensspannenentwicklung
Ferring, Dieter UL

in Ferring, Dieter; Steffgen, Georges; Michaux, Gilles (Eds.) Psychologie in Luxemburg - Ein Handbuch (2014)

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See detailSchüler und Schülerinnen mit besonderem Förderungsbedarf im luxemburgischen Bildungssystem.
Limbach-Reich, Arthur UL; Powell, Justin

in Lenz, Thomas (Ed.) L'état de l'école au Luxembourg / Nationaler Bildungsbericht Luxemburg (2014)

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See detailConcurrence normative en Europe : quelle attractivité pour les droits nationaux
Menetrey, Séverine UL; Defromont, Julien-Alexis UL

in Revue Internationale de Droit Economique (2014)

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See detailDas Betreuungsgespräch
Huemer, Birgit UL; Rheindorf, Markus

Learning material (2014)

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See detailH-infinity Adaptive Observer Design and Parameter Identification for a Class of Nonlinear Fractional-Order Systems
N'Doye, Ibrahima; Voos, Holger UL; Laleg-Kirati, Taous-Meriem et al

in 53rd IEEE Conference Decision and Control, CDC’14, Los Angeles, USA, 15-17 Dec. 2014 (2014, December)

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See detailHedge Fund Innovation
Siegmann, Arjen; Stefanova, Denitsa UL; Zamojski, Marcin

Scientific Conference (2014, December)

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See detailMaster in Gerontologie
Ferring, Dieter UL

in Steffgen, Georges; Ferring, Dieter; Michaux, Gilles (Eds.) Psychologie in Luxemburg - Ein Handbuch (2014)

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See detailMusic (Education) from the Cradle to the Grave
Sagrillo, Damien UL; Ferring, Dieter UL

Book published by Margraf Publishers (2014)

This book deals with music as a life time companion that serves several functions across the life span. The combination of music with age includes music practice, music listening, music therapy and music ... [more ▼]

This book deals with music as a life time companion that serves several functions across the life span. The combination of music with age includes music practice, music listening, music therapy and music education. The contributions clarify the relations between music education, music animation and music therapy. They deal with music in a medical and in a geriatric environment. They give impressing insights about music therapy that helps people to die in dignity. An innovative form of therapy illustrates how music can be benefitial in relation to pain. Two contributions give examples of music education and its challenges for elderly people in proposing didactic models and in highlighting how choir singing becomes a matter of informal learning for seniors. [less ▲]

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See detailDistributed Harmonic Compensation for Power Quality in Smart Grids
Kobou Ngani, Patrick UL; Hadji-Minaglou, Jean-Régis UL; Marso, Michel UL et al

in Cahier Scientifique - Revue Technique Luxembourgeoise (2014)

It is now well known that the quality of electric power is a key factor for the electricity service. It defines how good the characteristics (amplitude and frequency) of the supplied power meet the rated ... [more ▼]

It is now well known that the quality of electric power is a key factor for the electricity service. It defines how good the characteristics (amplitude and frequency) of the supplied power meet the rated ones. Voltage dip (or sag) and swell, short and long interruptions, voltage spike, under and over voltage, harmonic distortion, voltage unbalance are the common power quality problems. Among these last, the harmonics issue is getting more and more important over the last decades and this trend will surely continue its race. This is essentially due to the widespread use of electronic components in electric equipment: it changes the nature of the electric loads from linear to non-linear and makes them, on the one hand, responsible for the harmonics generation in the power grid but very sensitive to the power quality problems on the other hand. [less ▲]

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See detailAssessing partial observability in network sensor location problems
Viti, Francesco UL; Rinaldi, Marco; Francesco, Corman et al

in Transportation Research. Part B : Methodological (2014), 70

The quality of information on a network is crucial for different transportation planning and management applications. Problems focusing on where to strategically extract this information can be broadly ... [more ▼]

The quality of information on a network is crucial for different transportation planning and management applications. Problems focusing on where to strategically extract this information can be broadly subdivided into observability problems, which rely on the topological properties of the network, and flow-estimation problems, where (prior) information on observed flows is needed to identify optimal sensor locations. This paper contributes mainly to the first category: more specifically, it presents a new methodology and an intuitive metric able to quantify the quality of a solution in case of partial observability, i.e. when not all flow variables are observed or can be uniquely determined from the observed flows. This methodology is based on existing approaches that can efficiently find solutions for full observability (i.e., the set of sensors needed to make the system fully determined), and exploits only the algebraic relations between link, route and origin-destination flow variables to quantify the information contained in any arbitrary subset of these variables. The new metric allows, through its adoption within simple search algorithms, to efficiently select sensor locations when the number of available sensors is limited by, for example, budget constraints and is less than the number needed to guarantee full observability. The chosen positions aim at selecting those locations that contain the largest information content on the whole network. This is an important contribution in this field, since even in small sized networks the solution for full observability requires an exceedingly large amount of sensors. The assessment of partial observability solutions, based on explicit route enumeration, allows one to categorize families of full observability solutions, and shows that these contain different information potential. This way, it is possible to rank solutions requiring a lower number of sensors while containing the same information content. We tested this new methodology both on toy networks, in order to analyse the properties of the metric and illustrate its logic, and to explain and test heuristic search algorithms for optimal sensor positioning on a real-sized network. Analysis of partial observability solutions shows that the basic search algorithms succeed in finding the links that contain the largest deal of information in a network. [less ▲]

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