Last 7 days     Results 81-100 of 4443.   1 2 3 4 5 6 7 8 9 10   Joint Precoding and On-Board Beamforming for Multiple gateway Multibeam Satellite SystemsJoroughi, Vahid in Submitted to IEEE Journal on Selected topic in Communication (JSAC) (in press)This paper aims to design joint precoding and onboard beamforming of a multiple gateway multibeam satellite system, either in a hybrid space-ground mode, or in a totally on-board one. In such an ... [more ▼]This paper aims to design joint precoding and onboard beamforming of a multiple gateway multibeam satellite system, either in a hybrid space-ground mode, or in a totally on-board one. In such an architecture, with employing high throughput full frequency reuse pattern over both user and feeder links, each gateway serves a cluster of adjacent beams such that the adjacent clusters are served through a set of gateways that are located at different geographical areas. However, such a system brings in two challenges to overcome. First, the interference in both user and feeder links is the bottleneck of the whole system and applying interference mitigation techniques becomes necessary. Second, as the data demand increases, the ground and space segments should employ extensive bandwidth resources in the feeder link accordingly. This entails embedding an extra number of gateways aiming to support a fair balance between the increasing demand and the corresponding required feeder link resources. To solve these problems, this study investigates the impact of employing a joint multiple gateway architecture and on-board beamforming scheme. It is shown that by properly designing the on-board beamforming scheme, the number of gateways can be kept affordable even if the data demand increases. Moreover, Zero Forcing (ZF) precoding techniques are considered to cope with the interference in both user and feeder links which embed in the following premises: (i) each gateway constructs a part of block ZF precoding matrix, (ii) the satellite and gateways perform the precoding scheme, and (iii) a joint design of ZF precoding and on-board beamforming at the payload of the satellite so that no signal processing scheme is conceived at the gateways. The provided simulation results depict the performance gain obtained by our proposed schemes. [less ▲]Detailed reference viewed: 58 (8 UL) Pain and Attention: Towards a Motivational Accountvan Ryckeghem, Dimitri ; Crombez, GeertBook published by Oxford University Press (in press)Attention plays a pivotal role in the experience of pain and its impact upon daily activities. Accordingly, research on the interplay between attention and pain has a long scientific history. Within this ... [more ▼]Attention plays a pivotal role in the experience of pain and its impact upon daily activities. Accordingly, research on the interplay between attention and pain has a long scientific history. Within this chapter, we discuss the theoretical frameworks that aim to explain the relationship between attention and pain. We argue for a motivational perspective on pain that highlights the critical role of cognitive, affective and contextual factors in explaining the interplay between attention and pain. To substantiate this argument, we provide an overview of available research addressing the bottom-up capture of attention by pain and the top-down modulation (both inhibition and facilitation) of attention for pain. We conclude this chapter with guidelines and suggestions for future research and discuss clinical implications of adopting a motivational perspective on pain. [less ▲]Detailed reference viewed: 23 (1 UL) Discursivité des sorcières au XXe siècle, ou l’émancipation par les figures des margesBarthelmebs-Raguin, Hélène in French Studies (in press)Detailed reference viewed: 10 (0 UL) Conclusion à CriminellesBarthelmebs-Raguin, Hélène ; Freyheit, Matthieuin Barthelmebs-Raguin, Hélène; Freyheit, Matthieu (Eds.) Criminelles. Pourquoi les femmes tuent (in press)Detailed reference viewed: 6 (0 UL) Criminelles. Pourquoi les femmes tuentBarthelmebs-Raguin, Hélène ; Freyheit, MatthieuBook published by Presses universitaires de Rennes (in press)Detailed reference viewed: 3 (0 UL) Dire et faire percevoir la violence. Réflexions sur les écritures de Calixthe Beyala et Ananda DeviBarthelmebs-Raguin, Hélène in Barthelmebs-Raguin, Hélène; Freyheit, Matthieu (Eds.) Criminelles. Pourquoi les femmes tuent (in press)Detailed reference viewed: 4 (0 UL) En mots et en images : le corps à l’œuvre chez Annie ErnauxBarthelmebs-Raguin, Hélène in Sens Public (in press)Detailed reference viewed: 5 (0 UL) Introduction à CriminellesBarthelmebs-Raguin, Hélène ; Freyheit, Matthieuin Barthelmebs-Raguin, Hélène; Freyheit (Eds.) Criminelles. Pourquoi les femmes tuent (in press)Detailed reference viewed: 6 (0 UL) A Head-count Measure of Rank Mobility and Its Directional DecompositionD'Ambrosio, Conchita ; Bossert, Walter; Can, Burakin Economica (in press)Detailed reference viewed: 40 (3 UL) Écrire l’intime. Relation à l’écriture dans l’œuvre de Michèle MailhotBarthelmebs-Raguin, Hélène in Verthuy, Maïr; Blais, Marie-Claire; Camet, Sylvie (Eds.) Collectif sur Michèle Mailhot (in press)Detailed reference viewed: 19 (0 UL) The discrete Pompeiu problem on the planeKiss, Gergely ; Laczkovich, Miklós; Vincze, Csabain Monatshefte für Mathematik (in press)We say that a finite subset $E$ of the Euclidean plane $\R^2$ has the discrete Pompeiu property with respect to isometries (similarities), if, whenever $f:\R^2\to \C$ is such that the sum of the values of ... [more ▼]We say that a finite subset $E$ of the Euclidean plane $\R^2$ has the discrete Pompeiu property with respect to isometries (similarities), if, whenever $f:\R^2\to \C$ is such that the sum of the values of $f$ on any congruent (similar) copy of $E$ is zero, then $f$ is identically zero. We show that every parallelogram and every quadrangle with rational coordinates has the discrete Pompeiu property with respect to isometries. We also present a family of quadrangles depending on a continuous parameter having the same property. We investigate the weighted version of the discrete Pompeiu property as well, and show that every finite linear set with commensurable distances has the weighted discrete Pompeiu property with respect to isometries, and every finite set has the weighted discrete Pompeiu property with respect to similarities. [less ▲]Detailed reference viewed: 14 (0 UL) Construction d’identités fédératrices en contexte multiculturel. Le cas du Livre de Dede KorkutBarthelmebs-Raguin, Hélène in Multiculturalisme, interculturalité, identité complexe : l’exemple du caucase (in press)Detailed reference viewed: 8 (0 UL) “D’après une histoire vraie”Barthelmebs-Raguin, Hélène in Ferry, Ariane; Provini, Sandra (Eds.) Figures et personnages de criminelles, des histoires tragiques au roman policier (in press)Detailed reference viewed: 10 (0 UL) Equivariant K-homology for hyperbolic reflection groupsLafont, Jean-Francois; Ortiz, Ivonne; Rahm, Alexander et alE-print/Working paper (in press)We compute the equivariant K-homology of the classifying space for proper actions, for cocompact 3-dimensional hyperbolic reflection groups. This coincides with the topological K-theory of the reduced C ... [more ▼]We compute the equivariant K-homology of the classifying space for proper actions, for cocompact 3-dimensional hyperbolic reflection groups. This coincides with the topological K-theory of the reduced C*-algebra associated to the group, via the Baum-Connes conjecture. We show that, for any such reflection group, the associated K-theory groups are torsion-free. This means that we can complete previous computations with rational coefficients to get results with integral coefficients. On the way, we establish an efficient criterion for checking torsion-freeness of K-theory groups, which can be applied far beyond the scope of the present paper. [less ▲]Detailed reference viewed: 18 (0 UL) Environmental and sustainability education in the Benelux countries: Research, policy and practices at the intersection of education and societal transformationVan Poeck, Katrien; König, Ariane ; Wals, Arjen E.J.in Environmental Education Research (in press)As an introductory article of a Special Issue on Environmental and Sustainability Education (ESE) in the Benelux region, this paper provides an overview of ESE research, policy and practice in Belgium ... [more ▼]As an introductory article of a Special Issue on Environmental and Sustainability Education (ESE) in the Benelux region, this paper provides an overview of ESE research, policy and practice in Belgium, The Netherlands and Luxembourg. It discusses the different contributions in this collection with regard to how the central theme of this issue, the relation between education and societal transformation, is approached in each paper. The main characteristics of the ESE research fields in the Benelux are described in general terms, and placed within the context of how ESE policy and practice are organised in these countries. Next, different conceptualisations of the relation between educational and political spaces reflected in the collection are discussed and the varied contributions to this issue are positioned in relation to three distinguished traditions of approaching the place of democracy in ESE. The authors conclude with commenting on how this relates to different approaches to the research-policy-practice interface. [less ▲]Detailed reference viewed: 55 (2 UL) Sustainability in small states: Luxembourg as a post-suburban space under growth pressure in need of a cross-national sustainabilityCarr, Constance in Brinkmann, Robert; Garren, Sandra J. (Eds.) The Palgrave Handbook of Sustainability: Case Studies and Practical Solutions (in press)Detailed reference viewed: 47 (0 UL) Femmes fatalesBarthelmebs-Raguin, Hélène in Dictionnaire raisonné de la peur (in press)Detailed reference viewed: 5 (0 UL) Datenbank für Zweisprachige Historische Luxemburgische BekanntmachungenGilles, Peter ; Ziegler, Evelynin Wallmeier, Nadine; Tophinke, Doris (Eds.) Historische Stadtsprachenforschung (in press)Detailed reference viewed: 14 (0 UL) Korpusbasierte Untersuchung der Wort-bildungsaffixe im Luxemburgischen. Technische Herausforderungen und linguistische Analyse am Beispiel der ProduktivitätSirajzade, Joshgun in Zeitschrift für Wortbildung = Journal of Word Formation (in press), 18(1), This article is a report about compiling a corpus of Luxembourgish for investigation of word formation. First it gives an example for benefits of using a corpus with annotations in investigation of ... [more ▼]This article is a report about compiling a corpus of Luxembourgish for investigation of word formation. First it gives an example for benefits of using a corpus with annotations in investigation of productivity of some select-ed word formation affixes of Luxembourgish. Then it describes how this can be achieved from a technical point of view. [less ▲]Detailed reference viewed: 29 (11 UL) Linguistic Landscape-Forschung in sprachhistorischer Perspektive: öffentliche Bekanntmachungen in der Stadt Luxemburg im langen 19. JahrhundertGilles, Peter ; Ziegler, Evelynin Zeitschrift für Germanistische Linguistik (in press)Detailed reference viewed: 13 (3 UL)