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See detailTotal Electron Content monitoring using triple frequency GNSS: Results with GIOVE-A/-B data
Spits, Justine; Warnant, René ULiege

(2010, June)

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See detailAnalytical validation of the Abbott Architect urine NGAL
Cavalier, Etienne ULiege; Saarbach, D.; Bekaert, Anne-Catherine ULiege et al

in Clinical Chemistry (2010, June), 56(S6), 96

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See detailEvaluation of Liaison Calcitonin II Gen, a new kit for Calcitonin determination
Cavalier, Etienne ULiege; Carlisi, Ignazia ULiege; Bekaert, Anne-Catherine ULiege et al

in Clinical Chemistry (2010, June), 56(S6), 188

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See detailThe ratio of PTH as measured by third and second generation assays as a marker for parathyroid carcinoma
Cavalier, Etienne ULiege; Daly, Adrian ULiege; Betea, Daniela ULiege et al

in Clinical Chemistry (2010, June), 56(S6), 188

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See detailLa création d'un centre spécialisé d'appui à l'évaluation pédagogique en Bolivie, comme résultat d'une alliance éducative internationale
Aliss, Emilio; Gilles, Jean-Luc ULiege; Bruyninckx, Marielle et al

in Castillo Moncada, Domingo; Muniz Garcia, Manuel Gpe; Arriaga Méndez, Juana (Eds.) Memorias del: XVI Congreso Munidial de Ciencias de la Educacion - Monterrey, Nuevo Leon, Mexico, 2010 (2010, June)

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See detailLes jeux de la Reine Astrid
Charlier, Sébastien ULiege

in A+ : Architecture in Belgium (2010), 224

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See detail“One-pot” dispersion ATRP and alkyne-azide Huisgen’s 1,3-dipolar cycloaddition in supercritical carbon dioxide: towards the formation of functional microspheres
Grignard, Bruno ULiege; Calberg, Cédric ULiege; Jérôme, Christine ULiege et al

in Journal of Supercritical Fluids (2010), 53(1-3), 151-155

Functional polymers were successfully prepared in scCO2 by combining alkyne-azide 1,3-dipolar Huisgen’s cycloaddition and dispersion ATRP in a “one pot” process using new perfluorinated polymeric amino ... [more ▼]

Functional polymers were successfully prepared in scCO2 by combining alkyne-azide 1,3-dipolar Huisgen’s cycloaddition and dispersion ATRP in a “one pot” process using new perfluorinated polymeric amino-based ligands that had a dual role, i.e. the complexation of the copper catalyst and the stabilization of growing particles. [less ▲]

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See detailAnalyse des projets interreg III sous l’angle du développement territorial et urbain
Boniver, Véronique ULiege; Teller, Jacques ULiege

E-print/Working paper (2010)

Dans le cadre du programme de mise en œuvre 2008-2009 de la CPDT (Conférence Permanente du Développement Territorial), des chercheurs du Lepur (Centre de Recherche en Sciences de la Ville, du Territoire ... [more ▼]

Dans le cadre du programme de mise en œuvre 2008-2009 de la CPDT (Conférence Permanente du Développement Territorial), des chercheurs du Lepur (Centre de Recherche en Sciences de la Ville, du Territoire et du Milieu rural) ont réalisé une analyse des 283 projets Interreg III (période de programmation 2000-2006) impliquant un ou plusieurs partenaires wallons dans le but de mettre en évidence leurs dimensions territoriale et urbaine. Pour mener à bien cette analyse, un questionnaire d’enquête a été envoyé à 356 contacts officiels wallons. Les principaux résultats obtenus doivent être interprétés avec une certaine réserve puisqu'ils reposent uniquement sur les déclarations des partenaires wallons interrogés. [less ▲]

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See detailImproving Interferometric Null Depth Measurement with statistics : theory and first results with the Palomar Fiber Nuller
Hanot, Charles ULiege

Scientific conference (2010, June)

A new "self-calibrated" statistical analysis method has been developed for reducing nulling interferometry data. The idea is to use the statistical distributions of the fluctuating null depths and beam ... [more ▼]

A new "self-calibrated" statistical analysis method has been developed for reducing nulling interferometry data. The idea is to use the statistical distributions of the fluctuating null depths and beam intensities to retrieve the astrophysical null depth (or equivalently the object's visibility) in the presence of fast instrumental fluctuations. The approach yields an accuracy much better (at least ten times) than is presently possible with standard data reduction methods, because the null depth accuracy is no longer limited by the magnitude of the phase and intensity errors but by uncertainties on their probability distributions. This approach was tested on the sky with the two-aperture fiber nulling instrument mounted on the Palomar Hale telescope. Using our new data analysis approach alone - and no observations of calibrators - , we find that astrophysical null depths lower than 0.001 can be reliably measured in the near infrared, with error bars as low as a few 10^-4. This statistical analysis is not specific to our instrument and may be applicable to other interferometers. Therefore I'll also present the application of this method to the measurement of Cepheids angular diameters at the VLTI with a sensitivities down to ~60µas. [less ▲]

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See detailOvergenerality Bias and these Consequences in Borderline Personality Disorder.
Boulanger, Marie ULiege; Smets, Virginie; Blairy, Sylvie ULiege

Poster (2010, June)

Objective: The present study investigated the Autobiographical Memory (AM) in borderline disorder population. AM is an entity that encompasses the individuals’past personnal experiences. Previous ... [more ▼]

Objective: The present study investigated the Autobiographical Memory (AM) in borderline disorder population. AM is an entity that encompasses the individuals’past personnal experiences. Previous researches have shown disturbances in AM among several psychiatric disorders such as depression, schizophrenia and bipolar disorder. This disturbances take the overgeneral retrieving form. Thus, when patients were asked to retrieve a specific event located in time and place, they recalled an overgeneral event. This deficit is not an isolated phenomen. Indeed the researches showed that AM deficits is related to decreasing of the ability to solve interpersonnal problem (Evans et al., 1992; Goddard et al., 1996) and impairments to project onself into the specific future events (D’argembeau et al., 2008; Williams et al., 1996). Impairments to respond adequately to social problems or to concrete plans for the future create hopelessness and to contribute to suicide attempt (Arie et al., 2008). Given the high risk of suicide or suicide attempts present in the Bordeline Personnality Disorder (BPD), consideration of AM in this population is appropriate. The aim of the present study was investigate the AM, the projection into the future and the problem solving in patients suffering from BPD. Method: 21 subjects BPD and 21 healthy controls participated in this study. First, the participants were asked to complete TeMA (validated French versions of AMT by Neumann & Philippot, 2006). Participants were instructed to generate specific past and future memories in response to cues words. Secondly, they were had to complete the OTT, they were asked to yield the most solutions as possible to daily problems. Finally the depression was controlled as well as neuropsychological variables. Results: The subjects with BPD recalled less specific past events and imagined less specific future events than healthy subjects (t(40) = 2.21, p = .031; t(40) = 3.4, p = .001, respectively). In addition, the number of past and future specific events was marginally correlated (r(42) = .31, p = .051). However, no difference between two groups on OTT and no correlation between past specificity and problem solving emerged. Discussion: As other clinical populations, the subjects with a BPD encounter deficits to retrieve specific past events. Moreover, these impairments are associated with deficits to imagine specific future events. Nevertheless, the ability to generate specific events was not related to the ability to solve problem. The observation of reduced specificity in the generation of autobiographical material is particularly clinically relevant. Indeed, difficulty in imagining the future may contribute to relapse. In conclusion, more systematic measure of this ability should be taken in both research and clinical fields. [less ▲]

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See detailComparison of GPS-derived vTEC over Cyprus with NeQuick Model
Haralambous, Haris; Bidaine, Benoît ULiege

in Doherty, P.; Hernández-Pajares, M.; Juan, J.-M. (Eds.) et al The International Beacon Satellite Symposium BSS2010 (2010, June)

This paper presents a comparison of ionospheric vertical total electron content (vTEC) values evaluated from Nicosia (35.1 N, 33.4 E) ground-based GPS station in Cyprus and the corresponding predictions ... [more ▼]

This paper presents a comparison of ionospheric vertical total electron content (vTEC) values evaluated from Nicosia (35.1 N, 33.4 E) ground-based GPS station in Cyprus and the corresponding predictions with the latest version of the NeQuick model during periods of low (2008), and high (2001) solar activity for different seasons. According to the study the NeQuick predictions generally underestimate vTEC values during high solar activity periods and overestimate vTEC values during low solar activity periods. [less ▲]

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See detailLa gestion des sols
Renneson, Malorie ULiege; Colinet, Gilles ULiege; Lienard, Amandine ULiege et al

Conference given outside the academic context (2010)

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See detailMultiple feedback loops in circadian cycles: robustness and entrainment as selection criteria
Hafner, Marc; Sacré, Pierre ULiege; Symul, Laura et al

in Proceedings of the Seventh International Workshop on Computational Systems Biology, WCSB 2010 (2010, June)

This paper discusses the contribution of an additional feedback loop to the entrainment and the robustness of a circadian system. To quantify robustness, we perform a global analysis of the system's ... [more ▼]

This paper discusses the contribution of an additional feedback loop to the entrainment and the robustness of a circadian system. To quantify robustness, we perform a global analysis of the system's parameter space. We quantify the parameter region where the circuit displays an experimentally observed behavior, under entrainment. This global measure is comleted with a classification based on the phase response curve (PRC). For two models of circadian rhythms, we found that the one with two loops is more robust than the one with a single loop: the two-loop model shows better resilience to parameter perturbations and it has also a larger region where the PRC matches experimental PRCs of circadian oscillators. [less ▲]

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See detailLes différentes fonctions du sol
Renneson, Malorie ULiege; Colinet, Gilles ULiege; Lienard, Amandine ULiege et al

Conference given outside the academic context (2010)

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See detailDesign for a multi-channel recording and stimulation device
Dethier, Julie ULiege

Master's dissertation (2010)

Brain functions can be severely altered by accidents leading to traumatic brain injuries or by diseases such as strokes, cancers or Alzheimer's. Currently, there are no medical instruments capable of ... [more ▼]

Brain functions can be severely altered by accidents leading to traumatic brain injuries or by diseases such as strokes, cancers or Alzheimer's. Currently, there are no medical instruments capable of restoring cognitive function, but recent progress in neurophysiology coupled with development of engineering techniques has introduced the era of a new class of devices: neural prostheses or brain-computer interfaces (BCIs). BCIs carry great promises: possibilities to stimulate areas of the brain to prevent or treat failures of the nervous system. Today, most devices used in this domain are not capable of restricting their action to specified anatomical targets due to the large size of the electrodes. In 2007, the BES-group (imec, Leuven) developed silicon-based multi-electrode neural probe arrays interacting at a single neuron level (single-unit) for in vivo selective neuronal recording and stimulation. My Master Thesis was developed with imec, Leuven, and focused on the realization of a multi-channel recording system for neural applications to enable a closed-loop approach (recording - stimulation - recording) that would allow for adjustment and fine tuning of the required stimulation pattern. The system’s read-out conditions and digitizes eight channels and provides the digitized output to an existing TI MSP430 based microprocessor system for wired or wireless data handling. The resulting platform can be used as a prototype for extensive experimental testing by biomedical scientists from the BES-group (imec). The first step in the study is the analysis, from a theoretical standpoint, of the conditioning and digitalization of the signals: low-noise amplification, filtering, offset compensation and digitization. A signal-to-noise study is performed, leading to the selection of electronic components suitable for my project. In the second part of the work, the PCB layout is conceived in a miniaturized SMD design style. The code implemented in the microprocessor MSP430 is detailed both for the recording of a single channel and eight channels concurrently. Adaptation of the amplification factor can be carried out either by digital processing or by user interaction. Design of the wireless link between a PC and the board is then considered. The link is built from the eZ430-RF2500 Development Tool (Texas Instruments), a complete USB-based wireless development tool providing all the hardware and software to create a wireless network. Eventually, the performance and limitations of the design are evaluated. The system handles properly the entire frequency range of action potentials (from 100Hz to 6kHz) for both wired and wireless configurations and shows very good results for signals with amplitude higher than 1mV_pp. Gain variation is available with either a stand-alone digital processing method or with user's control through keyboard and achieves satisfactory results for both accuracy and rapidity. The major limitation is a lack of accuracy for signals below 500〖μV〗_pp. Solutions for future designs are proposed including suppression of the offset compensation circuit and acceleration of the communication with the computer. Ideas for the addition of stimulation functions are proposed in hopes of a closed-loop approach. Last but not least, power supply and dissipation considerations are tackled. [less ▲]

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See detailA platform for the fast interpretation of movements and localization of users in 3D applications driven by a range camera
Pierard, Sébastien ULiege; Pierlot, Vincent ULiege; Barnich, Olivier ULiege et al

in Proceedings of the 3DTV Conference (2010, June)

Interactivity is one of the key challenges for immersive applications like gaming. Manufacturers have been working towards interfaces that are driven by a device (e.g. a Wiimote) or interfaces that are ... [more ▼]

Interactivity is one of the key challenges for immersive applications like gaming. Manufacturers have been working towards interfaces that are driven by a device (e.g. a Wiimote) or interfaces that are controlled by a camera with a subsequent computer vision module. Both approaches have unique advantages, but they do not permit to localize users in the scene with an appropriate accuracy. Therefore, we propose to use both a range camera and accurate range sensors to enable the interpretation of movements. This paper describes a platform that uses a range camera to acquire the silhouettes of users, regardless of illumination, and to improve the pose recovery with range information after some image processing steps. In addition, to circumvent the difficult process of calibration required to map range values to physical distances, we complete the system with several range laser sensors. These sensors are located in a horizontal plane, and measure distances up to a few centimeters. We combine all these measurements to obtain a localization map, used to locate users in the scene at a negligible computational cost. Our method fills a gap in 3D applications that requires absolute positions. [less ▲]

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See detailPétrologie sédimentaire: des roches aux processus
Boulvain, Frédéric ULiege

Book published by Ellipses (2010)

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