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See detailLa Lotharingie en question : identités, oppositions, intégration / Lotharingische Identitäten im Spannungsfeld zwischen integrativen und partikularen Kräften
Margue, Michel UL; Pettiau, Hérold UL

Book published by CLUDEM (2018)

This volume contains the proceedings of the 14th Journées Lotharingiennes, held at the University of Luxembourg, in October 2006 and devoted to the analysis of the development of political identities in ... [more ▼]

This volume contains the proceedings of the 14th Journées Lotharingiennes, held at the University of Luxembourg, in October 2006 and devoted to the analysis of the development of political identities in Lotharingia, from the ninth century onward. It contains 17 contributions groupes une the following headings: (1) Eléments fédérateurs; (2) Dissensions internes et identités régionales ; (3) Vecteurs identitaires; (4) La persistance de l'idée lotharingienne. [less ▲]

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See detailLotharingie médiévale
Pettiau, Hérold UL; Schroeder, Nicolas

Scientific Conference (2013, September 27)

Cette présentation, effectuée dans le cadre de la session consacrée aux espaces médiévaux avait deux objectifs ; tout d’abord, présenter cet espace méta-national complexe et changeant qu’est la ... [more ▼]

Cette présentation, effectuée dans le cadre de la session consacrée aux espaces médiévaux avait deux objectifs ; tout d’abord, présenter cet espace méta-national complexe et changeant qu’est la Lotharingie médiévale, s’étendant géographiquement de la mer du Nord au massif des Vosges, et délimité à l’est par le Rhin, à l’ouest la Meuse et la Saône. Il s’agissait ensuite de présenter l’organisation de la page « Lotharingie médiévale » qui sera bientôt soumise à la relecture avant mise en ligne. Politiquement, la Lotharingie trouve son origine dans le regnum Hlotharii, royaume de Lothaire II (855-869), partie septentrionale de la Francia media, part de l’empire carolingien attribuée à Lothaire Ier lors du partage de Verdun. Ce royaume fut ensuite partagé entre les carolingiens de l’ouest et de l’est et ne connut qu’une brève existence autonome sous Zwentibold (895-900). Le Xe siècle vit une intégration progressive de cet espace au sein de la Francie orientale et du saint empire romain germanique. Il fut divisé selon un axe est-ouest entre duchés de haute et de basse Lotharingie. Ceux-ci servirent de cadre à la formation de principautés territoriales aux XIe et XIIe siècles. Il s’agit d’un espace central, marqué par la présence de fleuves importants, et traversé de part en part par une frontière linguistique. Cet espace est donc un objet d’étude partagé entre différentes historiographies et traditions académiques nationales et régionales. Son étude est également propice à la création de coopérations internationales. Ce sont là deux facteurs dont doit tenir compte l’organisation de la page Ménestrel, tant au niveau des lieux et acteurs de la recherche, qu’à celui des différents projets internationaux visant à l’étude mais également à la publication de répertoires cartographiques et de bases de données (sources, monastères, etc.) sur le Net. Il en va de même pour les forums permettant des rencontres scientifiques autour de l’objet « Lotharingie » (en particulier les Journées Lotharingiennes organisées à Luxembourg). Un certain nombre de ces coopérations sont actuellement en cours d’élaboration ou de démarrage. La page Ménestrel les recensera. L’exposé se termine sur une mise en garde : la Lotharingie est un objet d’étude partagé et multiforme, qui est soumis au risque d’anachronismes et susceptible d’usages variables, voire d’enjeux politiques. [less ▲]

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See detailLotharingien als Reformraum (10. bis Anfang des 12. Jahrhunderts). Einige einleitende Bemerkungen zum Gebrauch räumlicher und religiöser Kategorien
Margue, Michel UL

in Herbers, Klaus; Müller, Harald (Eds.) Lotharingien und das Papsttum im Früh- und Hochmittelalter: Wechselwirkungen im Grenzraum zwischen Germania und Gallia (2017)

This anthology is devoted to Lothringia, once a key territory in the Carolingian Empire and later a border and contact zone between the Kingdoms of Germany and France. The essays seek to encourage ... [more ▼]

This anthology is devoted to Lothringia, once a key territory in the Carolingian Empire and later a border and contact zone between the Kingdoms of Germany and France. The essays seek to encourage systematic research on the relationship between the papacy and this dynamic territory in the heart of Europe, thus encouraging consideration of a Lotharingia pontificia. [less ▲]

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See detailLOTUS – Gesprächsgruppen für hochbegabte Jugendliche (Materialband).
Baudson, Tanja Gabriele UL; Preckel, Franzis

Diverse speeches and writings (2016)

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See detailLOTUS – Gesprächsgruppen für hochbegabte Jugendliche (Trainingsmanual).
Baudson, Tanja Gabriele UL; Preckel, Franzis

Book published by Karg-Stiftung (2016)

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See detailLe lourd héritage de la Seconde Guerre mondiale (1945-années 1980) 
Hoffmann, Elisabeth UL

in Scuto, Denis; Lesch, Paul; Steichen, Yves (Eds.) Un journal dans son siècle. Tageblatt 1913-2013 (2013)

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See detailLOVBench: Ontology Ranking Benchmark
Kolbe, Niklas UL; Vandenbussche, Pierre-Yves; Kubler, Sylvain UL et al

in Proceedings of The Web Conference 2020 (WWW '20) (2020, April)

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See detailLove as a Fictitious Commodity: Gift-for-Sex Barters as Contractual Carriers of Intimacy
Swader, Christopher; Strelkova, Olga; Sutormina, Alena et al

in Sexuality & Culture (2013), 17

Gift-for-sex (GFS) barters are a niche practice potentially representing the commodification of everyday dating practices. We inquire how GFS exchanges are practiced and understood in contemporary Russia ... [more ▼]

Gift-for-sex (GFS) barters are a niche practice potentially representing the commodification of everyday dating practices. We inquire how GFS exchanges are practiced and understood in contemporary Russia. Second, we situate these in relation to contemporary economic culture. Our project provides answers in two steps based on online content. First, we identify GFS exchange practices within a major dating website. Next, we take the signals exchanged in those dating profiles and display their intersubjective meanings in Russia based on blogs and discussion fora. Our analysis focuses on gender roles and inter-gender conflicts, the use of economic jargon, the link between luxury consumption and sexuality, and under- standings of gift-giving and generosity, in order to show how GFS barters, despite being contractual, carry emotional and romantic content. As such, love is under a constant conversion process, through the medium of the contractual gift, into the fictitious commodity form. [less ▲]

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See detailLove in intercultural relationships: Affection, commitment, romantic beliefs and conflicts
Aleksic, Gabrijela UL; Mathes, Magali

in Aleksic, Gabrijela (Ed.) Experiencing Culture in Intercultural Intimate Relationships (2021)

Differences in culture and mother tongue can have an important impact on the dynamics of an intercultural relationship. In this study the focus lies on the influence of culture and language on expressing ... [more ▼]

Differences in culture and mother tongue can have an important impact on the dynamics of an intercultural relationship. In this study the focus lies on the influence of culture and language on expressing love and affection and on other factors like commitment and romantic beliefs in intercultural romantic relationships, and the conflicts that might occur due to the cultural and linguistic differences in intercultural romantic relationships. Two intercultural couples participated in this study. They were interviewed using a semi-structured approach and were recorded. These were transcribed and coded with the coding scheme based on the Grounded Theory. The findings suggest that culture and language have a quite significant influence on expressing love and affection in intercultural romantic relationships. Furthermore, cultural and linguistic differences can have an influence on becoming committed to another person. The expression of romantic beliefs can also be influenced by the different cultural backgrounds. Cultural and linguistic differences can predict conflicts in intercultural romantic relationships. In this study, barriers in communication, differences in religion and different perspectives on concepts such as homosexuality are at the core of these conflicts. [less ▲]

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See detailLow B field magneto-phonon resonances in single-layer and bilayer graphene
Neumann, Christoph; Reichardt, Sven UL; Drögeler, Marc et al

in Nano Letters (2015), 15(3), 1547--1552

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See detailLow Complexity Predistortion and Equalization in Nonlinear Multicarrier Satellite Communications
Zenteno, Efrain; Piazza, Roberto UL; Shankar, Bhavani UL et al

in EURASIP Journal on Advances in Signal Processing (2015)

Aiming to reduce the power/mass requirements in satellite transponders and to reduce mission costs, joint amplification of multiple carriers using a single high-power amplifier (HPA) is being considered ... [more ▼]

Aiming to reduce the power/mass requirements in satellite transponders and to reduce mission costs, joint amplification of multiple carriers using a single high-power amplifier (HPA) is being considered. In this scenario, a careful investigation of the resulting power efficiency is essential as amplification is nonlinear, and multicarrier signals exhibit enlarged peak-to-average power ratio. Thus, operating the amplifier close to saturation vastly increases signal distortion resulting in a severe degradation of performance, especially for higher order modulations. This paper proposes a reduced-complexity digital predistortion (DPD) scheme at the transmitter and a corresponding equalizer (EQ) at the receiver to mitigate these nonlinear effects. Scenarios include both the forward as well as the return links. In particular, the paper exploits the MIMO Volterra representation and builds on a basis pursuit approach using a LASSO (least absolute shrinkage and selection operator) algorithm to achieve an efficient basis representation, avoiding large computational complexity, to describe the selection of predistorter/equalizer model. The work further compares and contrasts the two mitigation techniques taking various system aspects into consideration. The gains in performance and amplification efficiency demonstrated by the use of DPD/ EQ motivate their inclusion in next-generation satellite systems. [less ▲]

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See detailLow Complexity Symbol-Level Design for Linear Precoding Systems
Krivochiza, Jevgenij UL; Kalantari, Ashkan UL; Chatzinotas, Symeon UL et al

in Heusdens, Richard; Weber, Jos H. (Eds.) PROCEEDINGS of the 2017 Symposium on Information Theory and Signal Processing in the Benelux (2017, May 11)

The practical utilization of the symbol-level precoding in MIMO systems is challenging since the implementation of the sophisticated optimization algorithms must be done with reasonable computational ... [more ▼]

The practical utilization of the symbol-level precoding in MIMO systems is challenging since the implementation of the sophisticated optimization algorithms must be done with reasonable computational resources. In the real implementation of MIMO precoding systems, the processing time for each set of symbols is a crucial parameter, especially in the high-throughput mode. In this work, a symbol-level optimization algorithm with reduced complexity is devised. Performance of a symbol-level precoder is shown to improve in terms of the processing times per set of symbols. [less ▲]

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See detailLow Complexity Transmit Processing for Multibeam Satellite Systems with Non-Linear Channels
Mengali, Alberto UL; Kayhan, Farbod UL; Shankar, Bhavani UL et al

in Proceedings of ASMS Conference (2016, September)

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See detailLow Current Dispersion and Low Bias-stress Degradation of Unpassivated GaN/AlGaN/GaN/SiC HEMTs
Bernát, J.; Pierobon, R.; Marso, Michel UL et al

in Physica Status Solidi C. Current Topics in Solid State Physics (2005), 2(7), 2676-2679

The performance of unpassivated GaN/AlGaN/GaN/SiC HEMTs with intentionally undoped and doped barrier structures are extensively studied. No drain current dispersion between DC and 50 ns pulses on doped ... [more ▼]

The performance of unpassivated GaN/AlGaN/GaN/SiC HEMTs with intentionally undoped and doped barrier structures are extensively studied. No drain current dispersion between DC and 50 ns pulses on doped devices and less than 10% dispersion on undoped ones is observed. The full (100%) current recovery on undoped sample was measured in 1μs. The drain current extrapolated from 2 GHz large signal measurements corresponds to the measured static drain current confirming negligible current dispersion of our devices. Insignificant (<5 %) degradation in overall device performance parameters (IDs, gm, fT, fmax, Pout) on both undoped and doped structures after 12-hour-long bias stress was obtained. These results documents that suitable device performances can be obtained also on unpassivated GaN-based HEMTs. [less ▲]

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See detailLow energy and high performance scheduling on scalable computing systems
Pecero, Johnatan UL; Bouvry, Pascal UL; Barrios, Carlos J.

in Proceedings of the Latin-American Conference on High Performance Computing (CLCAR 2010) (2010, August 28)

With the fast development of supercomputers, energy consumption by large scale computer systems has become a major concern. How to reduce energy consumption is now a critical issue in designing high ... [more ▼]

With the fast development of supercomputers, energy consumption by large scale computer systems has become a major concern. How to reduce energy consumption is now a critical issue in designing high-performance computing systems. Moreover, reducing energy consumption for high-performance computing can bring various benefits such as, reduce monetary operating costs, increase system reliability, and reduction of environmental impacts. Therefore, in this paper we address the problem of scheduling precedence-constrained parallel applications on heterogeneous scalable computing systems with the objectives of minimizing finish time and reduce energy consumption. We provide a scheduling algorithm based on the best-effort idea that adopts dynamic voltage scaling (DVS) to reduce energy consumption. That is, the algorithm firstly looks for nearoptimal solutions employing a list-based scheduling algorithm to find the minimum finish time (besteffort). Then, a fast random local search algorithm that exploits voltage scaling is used to reduce the energy consumption of the generated schedule without any performance degradation. Simulation results on structured graphs representing real-world applications emphasize the interest of the proposed approach. [less ▲]

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See detailLow energy quasiparticle dispersion of graphite by angle-resolved photoemission spectroscopy
Grueneis, A.; Pichler, T.; Shiozawa, H. et al

in PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2007), 244(11), 4129-4133

The low energy electron dispersion in graphite is measured by angle-resolved photoemission spectroscopy. The measured photoemission intensity maxima are compared to a tight-binding calculation of the ... [more ▼]

The low energy electron dispersion in graphite is measured by angle-resolved photoemission spectroscopy. The measured photoemission intensity maxima are compared to a tight-binding calculation of the electronic band structure. We observe a strong trigonal warping of the equi-energy contour which is well reproduced by the calculations. Furthermore we clearly show that the concept of Dirac Fermions breaks down for AB stacked graphite. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. [less ▲]

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See detailA low protein diet during early gestation in sheep detrimentally impacts hepatic glucose metabolism in the adult offspring
Gardner, David S.; Rhodes, Phillip; Karamitri, Angeliki et al

in Proceedings of the Nutrition Society 2011 (2011)

Differences in maternal diet can account for variation in the metabolic competence of the subsequent individual as an adult. ‘Developmental programming’ may impair fetal organ development leading to a ... [more ▼]

Differences in maternal diet can account for variation in the metabolic competence of the subsequent individual as an adult. ‘Developmental programming’ may impair fetal organ development leading to a limitation in function as an adult and/or increase the rate of age-related organ decline for example under conditions of obesity. Here, we have tested the interaction between prenatal nutritional ‘thrift’ and postnatal nutritional excess on gluco-regulatory functions in an ovine model. Seventy-four Scottish Blackface ewes were randomly assigned to receive either a control protein diet with adequate energy (18% protein; CP, n 20) or low protein diet (9% protein) fed during early gestation (0–65 d, term ~147 d; LPE, n 37) or late gestation (65–147 d; LPL, n 17). At 65 d a proportion of ewes was euthanised for fetal sampling. At term, remaining ewes lambed naturally, were weaned at 10 weeks and a random sample of offspring studied longitudinally when lean (1.5 years of age) and after 6 months exposure to an obesogenic environment. Body composition was determined by dual-energy absorptiometry and glucose and insulin tolerance tests were conducted with appropriate sampling intervals. At post mortem, muscle and hepatic tissues were sampled for expression and abundance of relevant gluco-regulatory genes. The diets had little effect on maternal weight and body composition through gestation or on fetal weights at 65 d. Term weight was reduced by ~500 g (P = 0.001) in LPL v. other groups but, by weaning, body weight was similar between groups and growth rate to adulthood was not different. Homeostasis model assessment of baseline glucose and insulin concentrations indicated relative insulin resistance in male LPE . Indeed, when challenged with a GTT, the incremental insulin AUC was significantly greater in male LPE when obese but not when lean (unpublished results). Molecular quantification of glucose-insulin pathways in muscle and liver indicated specific down-regulation of the hepatic insulin, but not lipid, pathways in male liver only. Muscle insulin-signalling pathways were unaffected as determined by microarray (Affymetrix, U133 chip; www.arraymining.net). The data suggest that a maternal, low protein, diet during early gestation specifically impacts upon the function of the resulting adult liver, such that the offspring appear more susceptible to large excursions in plasma insulin during gluco-regulatory challenges. The insulin sensitivity of offspring muscle, the largest single source of insulin-stimulated glucose uptake, was largely unaffected. Thus, obesity appears to exacerbate any functional deficits inherent in low protein exposed offspring in sheep, but those offspring born of low birth weight were largely unaffected, illustrating that nutritional quality is far more important than nutritional quantity especially during sensitive developmental phases of growth. [less ▲]

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