References of "2010"
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See detailStatistical Precoding with Decision Feedback Equalization over a Correlated MIMO Channel
Järmyr, Simon; Ottersten, Björn UL; Eduard, Jorswieck

in IEEE Transactions on Signal Processing (2010), 58(12), 6298-6311

The decision feedback (DF) transceiver, combining linear precoding and DF equalization, can establish point-to-point communication over a wireless multiple-input multiple-output channel. Matching the DF ... [more ▼]

The decision feedback (DF) transceiver, combining linear precoding and DF equalization, can establish point-to-point communication over a wireless multiple-input multiple-output channel. Matching the DF-transceiver design parameters to the channel characteristics can improve system performance, but requires channel knowledge. We consider the fast-fading channel scenario, with a receiver capable of tracking the channel-state variations accurately, while the transmitter only has long-term, channel-distribution information. The receiver design problem given channel-state information is well studied in the literature. We focus on transmitter optimization, which amounts to designing a statistical precoder to assist the channel-tailored DF equalizer. We develop a design framework that encompasses a wide range of performance metrics. Common cost functions for precoder optimization are analyzed, thereby identifying a structure of typical cost functions. Transmitter design is approached for typical cost functions in general, and we derive a precoder design formulation as a convex optimization problem. Two important subclasses of cost functions are considered in more detail. First, we explore a symmetry of DF transceivers with a uniform subchannel rate allocation, and derive a simplified convex optimization problem, which can be efficiently solved even as system dimensions grow. Second, we explore the tractability of a certain class of mean square error based cost functions, and solve the transmitter design problem with a simple algorithm that identifies the convex hull of a set of points in R2. The behavior of DF transceivers with optimal precoders is investigated by numerical means. [less ▲]

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See detailAdaptation cognitive et vieillissement : entre automatisme et flexibilité
Tournier, Isabelle UL

Doctoral thesis (2010)

L'objectif général de cette thèse est d'étudier l'évolution au cours du vieillissement des processus automatiques et contrôlés, nécessaires à une bonne adaptation cognitive quotidienne. Nous nous ... [more ▼]

L'objectif général de cette thèse est d'étudier l'évolution au cours du vieillissement des processus automatiques et contrôlés, nécessaires à une bonne adaptation cognitive quotidienne. Nous nous intéressons à l'influence de différentes variables cognitives (mémoire de travail, vitesse de traitement et vocabulaire) ainsi qu'aux préférences de routinisation sur l'expression de ce possible effet de l'âge. Des épreuves de fluidités sémantiques simples (Expérience 1) et alternées (Expériences 2 et 3) et des formats simples (Expériences 5a et 6a) et alternés (Expériences 5b et 6b) de la tâche de Hayling ont été réalisés par des adultes jeunes (18-30 ans), âgés (60-74 ans) et très âgés (75 ans et plus). Ces épreuves nous permettent d'étudier le processus automatique à travers la diffusion de l'activation en mémoire sémantique et les processus contrôlés par le biais de l'inhibition et de la flexibilité. L'activité cérébrale associée à l'exécution de fluidités simples et alternées est étudiée chez des participants âgés à l'aide de l'imagerie optique (Expérience 4). Les résultats obtenus sont en faveur d'une réduction avec l'âge de l'efficience des processus contrôlés alors que celle des processus automatiques semble conservée. Des phénomènes de compensation se mettraient en place au cours du vieillissement, s'appuyant sur les processus automatiques et les connaissances accumulées. [less ▲]

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See detailMarket structure, screening activity and bank lending behaviour
Papanikolaou, Nikolaos UL

E-print/Working paper (2010)

In this paper we construct a theoretical model of spatial banking competition that considers the differential information among banks and potential borrowers in order to investigate how market structure ... [more ▼]

In this paper we construct a theoretical model of spatial banking competition that considers the differential information among banks and potential borrowers in order to investigate how market structure affects the lending behavior of banks and their incentives to invest in screening technology. Consistent with the prevailing view in the relevant literature, our results reveal that competition reduces lending cost, which, in turn, encourages the entry of new customers in the loan market. Also, that the transportation cost that potential borrowers have to pay in order to reach the bank of their interest is decreased with the degree of competitiveness. Importantly, we demonstrate that market structure exerts a considerable positive effect on banks’ incentives to screen their loan applicants since banks are found to invest more in screening as competition in the market becomes higher. This is to say, banks resort to screening that serves as a buffer mechanism against bad credit which entails higher risk and which is more likely under competitive conditions. Overall, our findings provide support to a rather close link between the degree of competition, bank lending activity, and the investment of banks in screening technology. [less ▲]

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See detailThe Greek Case: The Truman Doctrine and British Manipulation of the United States
Paravantis, Spero UL

in Journal of the Hellenic Diaspora (2010), 36(1&2), 99-128

This Article analyses events in Greece from 1944 to 1947, and the way in which they were used by the British to stoke anti-communist sentiment and action in the US government.

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See detailLe médium nomade du logogramme et du logoneige de Christian Dotremont
PELARD, Emmanuelle UL

in Revue Proteus. Cahiers des théories de l'art (2010), 1

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See detailQuasi-polynomial functions over bounded distributive lattices
Couceiro, Miguel UL; Marichal, Jean-Luc UL

in Aequationes Mathematicae (2010), 80(3), 319-334

In [6] the authors introduced the notion of quasi-polynomial function as being a mapping $f\colon X^n\to X$ defined and valued on a bounded chain $X$ and which can be factorized as $f(x_1,\ldots,x_n)=p ... [more ▼]

In [6] the authors introduced the notion of quasi-polynomial function as being a mapping $f\colon X^n\to X$ defined and valued on a bounded chain $X$ and which can be factorized as $f(x_1,\ldots,x_n)=p(\varphi(x_1),\ldots,\varphi(x_n))$, where $p$ is a polynomial function (i.e., a combination of variables and constants using the chain operations $\wedge$ and $\vee$) and $\varphi$ is an order-preserving map. In the current paper we study this notion in the more general setting where the underlying domain and codomain sets are, possibly different, bounded distributive lattices, and where the inner function is not necessarily order-preserving. These functions appear naturally within the scope of decision making under uncertainty since, as shown in this paper, they subsume overall preference functionals associated with Sugeno integrals whose variables are transformed by a given utility function. To axiomatize the class of quasi-polynomial functions, we propose several generalizations of well-established properties in aggregation theory, as well as show that some of the characterizations given in [6] still hold in this general setting. Moreover, we investigate the so-called transformed polynomial functions (essentially, compositions of unary mappings with polynomial functions) and show that, under certain conditions, they reduce to quasi-polynomial functions. [less ▲]

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See detailDie Konferenz an der Universität im Dorf
Sagrillo, Damien UL

in Revue Musicale (2010), (5), 43

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See detailAge-related differences in subjective conceptions of gains and losses across the lifespan
Mustafic, Maida UL; Freund, Alexandra M.

Presentation (2010, December)

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See detailL’action extérieure de l’Union européenne, Fondements, Moyens, Principes
Neframi, Eleftheria UL

Book published by LGDJ (2010)

The book studies the role of the European Union as an international global actor. The specific external competences of the Union interfere through the coherence requirement and the global approach of the ... [more ▼]

The book studies the role of the European Union as an international global actor. The specific external competences of the Union interfere through the coherence requirement and the global approach of the external objectives according to the Lisbon Treaty. The obligation of loyal cooperation reinforces the unity of the external action of the Union and its Member States, and the respect of international law favours its credibility. The first part of the book studies the external action of the Union from the perspective of the principle of conferral, while the second part emphasises the legal basis of the effectiveness of the external action allowing the Union to be considered as a credible and influent global actor. [less ▲]

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See detailThe S-adic conjecture: general case and complexity 2n
Leroy, Julien UL

Scientific Conference (2010, December)

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See detailAdaptive Sliding Mode Control Design for a Class of Nonlinear Systems with Unknown Dead Zone of Unknown Bounds
Jasim, Ibrahim UL; Jasim, Najah

in Abstract book of 1st International Conference on Energy, Power, and Control (2010, December)

The control problem for a class of nonlinear systems that contain the coupling of unmeasured states and unknown parameters is addressed. The system actuation is assumed to suffer from unknown dead zone ... [more ▼]

The control problem for a class of nonlinear systems that contain the coupling of unmeasured states and unknown parameters is addressed. The system actuation is assumed to suffer from unknown dead zone nonlinearity. The parameters bounds of the unknown dead zone to be considered are unknown. Adaptive sliding mode controller, unmeasured states observer, and unknown parameters estimators are suggested such that global stability is achieved. Simulation for a single link mechanical system with unknown dead zone and friction torque is implemented for proving the efficacy of the suggested scheme. [less ▲]

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See detailA Harmonization Of First And Second Natures
Picard, Pierre M. UL; Zeng, Dao‐Zhi

in Journal of Regional Science (2010), 50(5), 973-994

This paper investigates the joint impact of the rst nature and the second nature forces on industry location. Towards this aim, we develop a two-region new economic geography model where local factor ... [more ▼]

This paper investigates the joint impact of the rst nature and the second nature forces on industry location. Towards this aim, we develop a two-region new economic geography model where local factor congestion and location advantages compete with demand linkages and product market crowding. In particular we study the case of absolute location advantage in a single industry model and the case of comparative advantages in a two-industry model. We characterize the structure of industries and discuss the possibilities of catastrophic changes, endogenous industrial asymmetries and specialization. We nd that absolute location advantage are associated with a smooth agglomeration process and comparative advantages with a catastrophic process. [less ▲]

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See detailHoe (on)geletterden lezen: Receptie van het linguïstisch landschap op het Gambiaanse platteland
Coppoolse, Jannet; Juffermans, Kasper UL

in Toegepaste Taalwetenschap in Artikelen (2010), 84(2), 19-28

This paper presents an explorative study on the reception of visual messages in the public space of village community in The Gambia. For this study, images of billboards and other signs along the main ... [more ▼]

This paper presents an explorative study on the reception of visual messages in the public space of village community in The Gambia. For this study, images of billboards and other signs along the main road were shown to twenty villages. They were asked what the images represented and how they knew this. It appeared that the interpretation of visual messages was based on more than the decoding of graphic symbols alone. Other semiotic signs play an important role as well. Twelve different types of interpretation were identified. It was concluded that a dichotomy of literate vs. illiterated does not capture the complexity of the distribution of reading skills in this society. [less ▲]

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See detailThe development of working memory capacity and fluid intelligence in children
Engel de Abreu, Pascale UL; Gathercole, S; Conway, A

Scientific Conference (2010, December)

A longitudinal study was conducted to investigate the relationship between working memory capacity and fluid intelligence and how this relationship develops in early childhood. The major aim was to ... [more ▼]

A longitudinal study was conducted to investigate the relationship between working memory capacity and fluid intelligence and how this relationship develops in early childhood. The major aim was to determine which aspect of the working memory system – short-term storage or executive attention – drives the relationship with fluid intelligence. A sample of 119 children was followed from kindergarten to second grade and completed multiple assessments of short-term memory, working memory, and fluid intelligence. Latent growth curve modeling was employed to investigate the factor structure in each grade and to assess the stability of the factor structure over time. The data suggest that working memory, short-term memory, and fluid intelligence are highly related but separate constructs in young children and the factor structure among these constructs is invariant across time. The results further showed that when the common variance between working memory and short-term memory was controlled, the residual working memory factor revealed significant links with fluid intelligence whereas the residual short-term memory factor did not. These findings, consistent with previous research on young adults, suggest that executive attention, rather than the storage component of working memory, is the primary source of the relationship between working memory capacity and fluid intelligence. [less ▲]

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See detailCompatibility of the SAFE FOODS Risk Analysis Framework with the legal and institutional settings of the EU and the WTO
König, Ariane UL

in Food Control (2010), 21(12), 1638-1652

This paper analyses the compatibility of the SAFE FOODS recommendations with the food safety governance systems of the EU and the World Trade Organisation (WTO), in which standard setting procedures of ... [more ▼]

This paper analyses the compatibility of the SAFE FOODS recommendations with the food safety governance systems of the EU and the World Trade Organisation (WTO), in which standard setting procedures of the Codex Alimentarius Commission (CAC) are considered most relevant. The objective is to better understand the implications from (1) the addition of formalised framing and evaluation stages to the risk analysis process and (2) the expansion of the scope of the risk assessment to comprise the distribution of risks, benefits and costs of regulatory measures. The paper concludes that these recommendations of the SAFE FOODS project are compatible to EU law provided they are fine-tuned to legal provisions on specific roles for agencies, EU Member States and the European Commission services. All recommendations are deemed largely compatible with the rules for procedure of the CAC. [less ▲]

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See detailEnvironmental risk assessment for food-related substances
Smith, M. R.; König, Ariane UL

in Food Control (2010), 21(12), 1588-1600

This report analyses various environmental risk assessment practices that are currently in place for food-related substances in both the EU and the USA. Within the EU, REACH requires the systematic review ... [more ▼]

This report analyses various environmental risk assessment practices that are currently in place for food-related substances in both the EU and the USA. Within the EU, REACH requires the systematic review of the toxicity of chemicals, with varying degrees of extensiveness of testing required based on the quantities of the chemicals used in practice. Genetically modified organisms are another example of how the environmental impacts of food-producing crops are assessed. The requirements for the use of substances in organic agriculture imply that these should also be assessed for environmental impact. In the USA, the FDA requires environmental assessments for food substance requiring this agency’s action. The EPA has elaborated guidelines for ecological risk assessment that show parallels with the food safety assessment, including the stages of problem formulation, analysis (assessment), and risk characterisation. Also the stakeholder involvement and risk management play an important role in the procedures envisaged by these guidelines. The utility of integrated assessments has been further stressed by WHO/IPCS. It is considered that the new integrated risk-analysis approach recommended by SAFE FOODS can benefit from the integration of environmental issues, including their assessment in the risk–benefit stage of the risk analysis cycle. [less ▲]

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See detailDe l’intérêt de la théorie, de la théorie générale de l’Etat, de la théorie constitutionnelle. A propos d’un livre récent de Matthias Jestaedt
Heuschling, Luc UL

in Jus Politicum : Revue internationale de droit politique (2010), 5

La science du droit constitutionnel a-t-elle besoin d’une théorie générale de l’Etat ou/et d’une théorie constitutionnelle ? A l’heure où le savoir traditionnel de la théorie générale de l’Etat traverse ... [more ▼]

La science du droit constitutionnel a-t-elle besoin d’une théorie générale de l’Etat ou/et d’une théorie constitutionnelle ? A l’heure où le savoir traditionnel de la théorie générale de l’Etat traverse une crise existentielle, le présent article voudrait susciter et relancer un débat épistémologique qui, en France, à l’inverse de l’Allemagne, est trop souvent escamoté. A ce titre, il présente une recension détaillée et critique du livre publié récemment par Matthias Jestaedt, Die Verfassung hinter der Verfassung. Eine Standortbestimmung der Verfassungstheorie (La Constitution derrière la Constitution. Un positionnement de la théorie constitutionnelle), F. Schöningh, Paderborn, 2009, dans lequel l’auteur, s’inspirant à la fois du normativisme viennois et de la philosophie herméneutique, déploie une réflexion profonde sur l’objet, la méthode et la raison d’être de la théorie constitutionnelle. [less ▲]

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