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See detailLa S-3D et réalité augmentée au service de la médecine et de la science
Audrit, Pierre; Martin, Didier ULg

Conference (2010, June 01)

Detailed reference viewed: 34 (3 ULg)
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See detailA Functional Diachronic Approach to Prolepsis: The Complementation of PCU Verbs in Ancient Egyptian
Grossman, Eitan; Polis, Stéphane ULg

Conference (2010, June 01)

Detailed reference viewed: 9 (1 ULg)
See detailMultiple spectroscopic study of in vitro photodynamic therapy induced by PPME
Guelluy, Pierre-Henri ULg; Quoilin, Caroline; Grammenos, Angeliki ULg et al

Conference (2010, June 01)

Detailed reference viewed: 21 (8 ULg)
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See detailInvestigations of the GCxGC-HRMS coupling
Focant, Jean-François ULg; Patterson Jr

Conference (2010, June)

Detailed reference viewed: 19 (0 ULg)
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See detailImpact of phonological awareness on reading and writing in Down’s syndrome
Frenkel, Stéphanie ULg; Vicari, Stefano

Conference (2010, June)

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See detailRemplissement et conditions de sens
Boccaccini, Federico ULg

Conference (2010, June)

Detailed reference viewed: 12 (4 ULg)
See detailCompromise and Society of Compromise : Some major lines
Nachi, Mohamed ULg

Conference (2010, June)

Le réflexion vise à dégager quelques traits saillants de ce qu'on pourrait appeler "société de compromis"

Detailed reference viewed: 11 (1 ULg)
See detailDétermination de la composition de l'héroïne par UHPLC/MS-MS
DUBOIS, Nathalie ULg; CHARLIER, Corinne ULg

Conference (2010, June)

Detailed reference viewed: 19 (2 ULg)
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See detailNovel applications of lactoperoxydase system against pathogens of cultivated plants
Jijakli, Haissam ULg; Bafort, Françoise ULg; perraudin, J.P

Conference (2010, June)

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See detailThe origins of small business failure : A Taxonomy of Five Explanatory Business Failure Patterns
Crutzen, Nathalie ULg

Conference (2010, June)

Whereas it is obvious that the failure process can vary from one firm to another (Argenti, 1976; D'Aveni, 1989; Laitinen, 1991), to date, few researchers have worked on the detection of several ... [more ▼]

Whereas it is obvious that the failure process can vary from one firm to another (Argenti, 1976; D'Aveni, 1989; Laitinen, 1991), to date, few researchers have worked on the detection of several explanatory failure patterns. In addition, none of the reviewed research really focuses on small firms while their failure is important and particular (Haswell and Holmes, 1989). Considering these observations and on the basis of two complementary statistical analyses (Thiétart, 2003), this paper identifies, among a sample of 208 small distressed firms, a taxonomy of five explanatory business failure patterns, i.e. five homogeneous groups of small firms on the basis of the reasons for their failure. These five patterns are the following ones : shocked firms (1), firms serving other interests (2), apathetic firms (3), firms that fail after a punctual managerial error (4) and badly-managed firms (5). The results of this paper are consistent with previous literature but they shed new lights on the understanding of the reasons for small business failure. As the detection of the fundamental explanatory failure factors is the basis of failure prevention (Argenti, 1976), the identification of these patterns is of crucial importance for a better understanding and for a better prevention of this phenomenon. [less ▲]

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See detailPassive target classification based on low-frequency bistatic backscattering coefficients
Pisane, Jonathan ULg; Lesturgie, Marc; Verly, Jacques ULg

Conference (2010, June)

In this paper, we describe a new automatic target recognition method for classifying targets according to their bistatic backscattering coefficients. The classification model is based on the construction of ... [more ▼]

In this paper, we describe a new automatic target recognition method for classifying targets according to their bistatic backscattering coefficients. The classification model is based on the construction of subspaces, one per target class. Results show an overall correct classification rate of about 83%, indicating that our method seems to be valid. Further improvements of the algorithm are also discussed. [less ▲]

Detailed reference viewed: 35 (7 ULg)
See detailDo Raven’s Colored Progressive Matrices function the same way in typical and clinical populations?
Nuchadee, Marie-Laure; Facon, Bruno; Magis, David ULg et al

Conference (2010, June)

Detailed reference viewed: 29 (1 ULg)
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See detailLa théorie de la réponse aux items et le logiciel R
Béland, Sébastien; Raîche, Gilles; Magis, David ULg et al

Conference (2010, June)

Detailed reference viewed: 76 (4 ULg)
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See detailTEC reconstruction using dual frequency modernized GPS (L1/L5) and GALILEO (E1/E5A) measurements
Warnant, René ULg; Lonchay, Matthieu ULg; Spits, Justine et al

Conference (2010, June)

GPS dual frequency L1/L2 measurements have been used for many years to reconstruct the ionosphere Total Electron Content and to detect small-scale irregular structures in the ionospheric plasma. TEC is ... [more ▼]

GPS dual frequency L1/L2 measurements have been used for many years to reconstruct the ionosphere Total Electron Content and to detect small-scale irregular structures in the ionospheric plasma. TEC is usually computed by forming the geometry-free combination of L1/L2 phase measurements. Most of the existing techniques use the geometry-free combination of code measurements to solve the non-integer geometry-free ambiguity. This methodology requires the computation of satellite and receiver hardware biases. In addition, the quality of the ambiguity resolution process strongly depends on code multipath. New signals from Galileo and from modernized GPS offer new opportunities for TEC reconstruction. First attempts to compute TEC using triple frequency measurements from modernized GPS (L1/L2/L5) and from Galileo (E1, E5a, E5b) give very promising results but, at the present time, only a few triple frequency GPS/Galileo receivers are available. The University of Liege has purchased two Septentrio PolaRx3G receivers which allow tracking GPS L1/L5 and Galileo E1/E5a signals. These receivers have been installed at the Geophysical Observatory of Dourbes (50.1°N, 4.6° E) and are continuously tracking all GPS and Galileo satellites in view (including GPS SVN49/PRN01, Giove A and Giove B) since November 2009. The paper analyzes the added value of L1/L5 and E1/E5a geometry free combinations and of the new GPS and Galileo signals for TEC reconstruction. It discusses the influence of multipath and of SVN49/PRN1, Giove A and Giove B hardware biases. [less ▲]

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See detailLARGE ORGANIC-WALLED MICROFOSSILS IN MESOARCHEAN SHALLOW-MARINE SILICICLASTIC DEPOSITS
Javaux, Emmanuelle ULg; Marshall, Craig; Bekker, Andrey

Conference (2010, June)

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See detailAn experimental study of the use of acoustic diffusers to reduce noise in urban areas
Picaut, Judicaël; Hossam Eldien, Hany; Billon, Alexis ULg

Conference (2010, June)

The use of acoustic diffusers to reduce noise in urban areas has been recently numerically investigated [Acta Acustica united with Acustica, Vol. 95 (2009), p. 653–668]. It was shown that a significant ... [more ▼]

The use of acoustic diffusers to reduce noise in urban areas has been recently numerically investigated [Acta Acustica united with Acustica, Vol. 95 (2009), p. 653–668]. It was shown that a significant noise reduction can be observed by considering diffusers on the building façades. In the present study, an experimental investigation is proposed to validate last results. Measurements are carried out using a 1:10 urban street scale model, with and without acoustics diffusers, in order to evaluate the “real” effect of such devices, for several configurations. Results, in terms of sound attenuation and reverberation, show that a positive effect can be observed, provided that diffusers are well designed for the reduction of road traffic noise. [less ▲]

Detailed reference viewed: 116 (2 ULg)
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See detailProbing command following in patients with disorders of consciousness using a brain-computer interface
Noirhomme, Quentin ULg; Chatelle, Camille ULg; Kleih, Sonja et al

Conference (2010, June)

Objective: In the recovery from coma, the acquisition of command following represents an important milestone, indicating emergence from the vegetative state. In some patients, recovery of consciousness ... [more ▼]

Objective: In the recovery from coma, the acquisition of command following represents an important milestone, indicating emergence from the vegetative state. In some patients, recovery of consciousness may precede motor recovery. Brain-computer interfaces (BCI) might permit these patients to show non-motor dependent signs of awareness and in a next step might enable communication. This study aimed at testing to what extent an EEG-based BCI could help detecting signs of awareness and communication in disorders of consciousness. Methods: We studied 13 patients with a minimally conscious state (MCS, 5 TBI – 8 anoxic, mean time post injury 70±109 months; mean age 42 ± 21) and 16 healthy controls (aged 45±19). Patients were evaluated using the Coma Recovery Scale Revised. 16-Channel EEG was recorded using a g.tec USBAmp amplifier. An auditory P300 four choice speller paradigm based on the BCI2000 system was used. Subjects were asked to answer yes or no to simple questions by paying attention to one out of four auditorily presented stimuli (‘yes’, ‘no’, ‘stop’, ‘go’). A trial constituted of 15 presentations of each sound the order of presentation being randomized. After a training session, patients and healthy subjects were required to answer 10 to 12 questions. A stepwise linear discriminant analysis based on the training session was used to classify the data. Offline, all training and testing trials were pooled and a leave-one-out approach was used to classify the data. Results: Healthy subjects presented a mean correct response rate of 73% online and 93% offline. Three MCS patients had a correct response rate of ≥50% offline (10, 18, 0% online and 50, 53, 57% offline). Two of these three patients did not show any command following at the bedside. The 10 remaining MCS cases showed online and offline correct answers <50% (mean 33±9% online and 25±13% offline). Conclusion: Our auditory P300-based BCI permitted functional interactive communication in 15/16 controls (online) and in all offline. Our data obtained in patients with disorders of consciousness demonstrate the potential clinical usefulness of the technique following coma but also show lower accuracy in patients as compared to healthy volunteers. This might be due to fluctuating attentional levels and exhaustibility in the MCS and to the suboptimal EEG recording quality due to movement, ocular and respiration artifacts in these challenging patients. [less ▲]

Detailed reference viewed: 89 (11 ULg)
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See detailUnemployment and Retirement in a model with age-specific heterogeneity
Lefebvre, Mathieu ULg

Conference (2010, June)

Detailed reference viewed: 16 (0 ULg)
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See detailImpact of storage and handling on metabolites in a human plasma standard reference material
Eppe, Gauthier ULg; Dodder, Nathan; Lippa, Katrice et al

Conference (2010, June)

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See detailF-LARSP. French Language Assessment Remediation and Screening Procedure
Maillart, Christelle ULg; Parisse, christophe; Tommerdahl, Jodi

Conference (2010, June)

This paper presents the adaptation of the LARSP (Language Assessment, Remediation and Screening Procedure) (Crystal et al., 1976) from English into French based on the analysis of a corpus of French ... [more ▼]

This paper presents the adaptation of the LARSP (Language Assessment, Remediation and Screening Procedure) (Crystal et al., 1976) from English into French based on the analysis of a corpus of French speaking children ranging between the ages of 18 months and 5 years. Included is a description of particularities of French morphosyntax and the ensuing adaptations that are reflected on the new French LARSP (F-LARSP) chart. The LARSP is a linguistic profile commonly used by researchers and clinicians to carry out “comprehensive and consistent linguistic analysis” (Ball, 1999); more specifically a detailed analysis of the grammar and morphology of children’s spontaneous language samples. The profile was developed in a manner that allows the user to clearly see the child’s grammatical strengths and weaknesses in relation to their chronological age. This is made possible by the notion that the order in which syntactic structures are acquired is relatively stable, at least until the approximate age of 5. Correlation of a child’s morphosyntactic production to their age provides the therapist with vital information regarding an array of areas including the possible diagnosis of language impairment, remediation planning, and measuring treatment efficacy carried out since the last profiling session. The tool is therefore useful for professionals working with children who are suspected of or who have been diagnosed with having forms of language difficulties such as Specific Language Impairment (SLI) where morphology and syntax are commonly affected. The utility of the LARSP, originally designed for Anglophone use, has led to its adaptation to several other languages. Those which have been published for an international audience include Welsh (1988), Dutch (1987), Irish (1990) and Persian (1998). [less ▲]

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See detailImpact of age and breed on incidence of clinical signs after natural infection with bluetongue virus serotype 8 in sheep
Kirschvink, N.; Leemans, J.; Bolkerts, B. et al

Conference (2010, June)

Detailed reference viewed: 8 (3 ULg)
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See detailNear-death experiences: real or imagined?
Thonnard, Marie ULg; Laureys, Steven ULg; Brédart, Serge ULg et al

Conference (2010, June)

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See detailHow to construct fundamental risk factors?
Lambert, Marie ULg; Hübner, Georges ULg

Conference (2010, June)

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See detailSupervised learning for a Kraft recovery boiler: a data mining approach with Random Forests.
Sainlez, Matthieu ULg; Heyen, Georges ULg; Lafourcade, Sébastien

Conference (2010, June)

A data mining methodology, the random forests, is applied to predict high pressure steam production from the recovery boiler of a Kraft pulping process. Starting from a large database of raw process data ... [more ▼]

A data mining methodology, the random forests, is applied to predict high pressure steam production from the recovery boiler of a Kraft pulping process. Starting from a large database of raw process data, the goal is to identify the input variables that explain the most significant output variations and to predict the high pressure steam flow. [less ▲]

Detailed reference viewed: 32 (8 ULg)
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See detailLarge-scale palaeontological data analysis of the conodonts fossil history
Martínez-Pérez, Carlos; Botella, Héctor; Cascales - Miñana, Borja ULg

Conference (2010, June)

Detailed reference viewed: 13 (0 ULg)
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See detailStructural and core parameters of the hot B subdwarf KPD 1943+4058 as inferred from g-mode oscillations
Van Grootel, Valérie ULg; Charpinet, Stéphane; Fontaine, Gilles et al

Conference (2010, June)

We present a seismic analysis of the pulsating hot B subdwarf KPD 1943+4058 (KIC 005807616) on the basis of the long-period, gravity-mode pulsations recently uncovered by Kepler. This is the first time ... [more ▼]

We present a seismic analysis of the pulsating hot B subdwarf KPD 1943+4058 (KIC 005807616) on the basis of the long-period, gravity-mode pulsations recently uncovered by Kepler. This is the first time that g-mode seismology can be exploited quantitatively for stars on the extreme horizontal branch, all previous successful seismic analyses having been confined so far to short-period, p-mode pulsators. We demonstrate that current models of hot B subdwarfs can explain quite well the observed g-mode periods, while being consistent with independent constraints provided by spectroscopy. We identify the 18 pulsations retained in our analysis as low-degree (l = 1 and 2), intermediate-order (k = −9 through −58) g-modes. The periods (frequencies) are recovered, on the average, at the 0.22% level, which is comparable to the best results obtained for p-mode pulsators. We infer the following structural and core parameters for KPD 1943+4058 : Teff = 28,050 ± 470 K, log g = 5.520 ± 0.029, M∗ = 0.4964 ± 0.0013 M⊙, log (Menv/M∗) = −2.552 ± 0.070, log (1−Mcore/M∗) = −0.366 ± 0.010, and Xcore(C+O) = 0.2612 ± 0.0080. We additionally derive the age of the star since the Zero-Age EHB 18.4 ± 1.0 Myr, the radius R = 0.2026 ± 0.0070 R⊙, the luminosity L = 22.92 ± 3.13 L⊙, the absolute magnitude MV = 4.21 ± 0.11, the reddening index E(B − V ) = 0.094 ± 0.017, and the distance d = 1183 ± 93 pc. [less ▲]

Detailed reference viewed: 5 (0 ULg)
See detailComparison of growth limits of Listeria monocytogenes in milk, broth and cheese
Jordan, Kieran; Schvartzman Echenique, Maria Sol ULg; Belessi, C et al

Conference (2010, June)

Detailed reference viewed: 25 (0 ULg)
See detailInterprétation et élucidation du récit de rêve
Gauvry, Charlotte ULg

Conference (2010, June)

Detailed reference viewed: 6 (0 ULg)
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See detailRéponse autonome cardiaque chez l'enfant brûlé : un indice pronostic de la sévérité de l'atteinte.
SABOURDIN, Nada; RICHARD, Patrick; ROUSSEAU, Anne-Françoise ULg et al

Conference (2010, June)

Detailed reference viewed: 17 (2 ULg)
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See detailPotential estimation of titratable acidity in cow milk using mid-infrared spectrometry
Colinet, Frédéric ULg; Soyeurt, Hélène ULg; Anceau, Christine ULg et al

Conference (2010, June)

Milk coagulation has a direct effect on cheese yield. Several factors influence the milk coagulation kinetics. In addition to calcium and milk protein concentrations, titratable acidity influences all the ... [more ▼]

Milk coagulation has a direct effect on cheese yield. Several factors influence the milk coagulation kinetics. In addition to calcium and milk protein concentrations, titratable acidity influences all the phases of milk coagulation. The objective of this research was to study the feasibility of prediction of titratable acidity directly in bovine milk using mid-infrared spectrometry. In order to maximize the variability in the measurements of titratable acidity, milk samples were collected on basis of several criteria (e.g. breeds). The titratable acidity was recorded as Dornic degree. All samples were also analyzed by MIR spectrometry. Using partial least squares regressions and first derivative pretreatment of spectral data, a calibration equation was built to predict the Dornic degree in cow milk. First results were promising and showed the potentiality to this calibration. The calibration and cross-validation coefficients of determination were 92.25 and 89.88 %, respectively. Moreover, the ratio of standard error of prediction to standard deviation was 3.13 and permits us to consider the calibration equation as usable in most application such as scientific researches and the screening of the Walloon dairy herd particularly in order to improve the milk coagulation properties. [less ▲]

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See detailRepresenting real numbers in a generalized numeration system
Charlier, Emilie ULg

Conference (2010, June)

We show how to represent an interval of real numbers in an abstract numeration system built on a language that is not necessarily regular. As an application, we consider representations of real numbers ... [more ▼]

We show how to represent an interval of real numbers in an abstract numeration system built on a language that is not necessarily regular. As an application, we consider representations of real numbers using the Dyck language. We also show that our framework can be applied to the rational base numeration systems. [less ▲]

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See detailWillingness-to-pay for local milk-based dairy products in Senegal
Lefevre, Mélanie ULg

Conference (2010, June)

This paper aims to evaluate Senegalese consumers' willingness-to-pay (WTP) for local fresh milk-based products, in opposition to the ones produced with imported powder. Exploiting data from a choice-based ... [more ▼]

This paper aims to evaluate Senegalese consumers' willingness-to-pay (WTP) for local fresh milk-based products, in opposition to the ones produced with imported powder. Exploiting data from a choice-based-conjoint analysis conducted on 400 households in the region of Dakar, we evaluate the premium that consumers are willing to pay for fresh raw material (rather than powder) in the composition of sour milk. Based on an Ordered Probit Model, the results show evidence for a positive WTP for fresh raw material, which may be seen as a strong indication of preference for local products. This WTP greatly depends on the characteristics of the households. Wealthier households are willing to pay more than the medium households, while big households are ready to pay much less than the base category ones. Obviously, some niche markets exist, that producers may target to sell the local milk-based dairy products. However, more information has to be provided about the composition of dairy products, as consumers are not currently able to distinguish both types of raw material, even if they are willing to pay more for one of them. In spite of some restrictions about the presence of a potential "hypothetical bias" due to the nature of the data, this study gives a first insight of consumers' preferences for local milk-based dairy products. [less ▲]

Detailed reference viewed: 25 (5 ULg)
See detailPulsations in O and B stars
Godart, Mélanie ULg

Conference (2010, June)

Detailed reference viewed: 11 (6 ULg)
See detailAn Early Cretaceous ichthyosaur from SE France: implications on the evolution of post-Liassic Ichthyosauria
Fischer, Valentin ULg; Clément, Arnaud; Guiomar, Myette et al

Conference (2010, June)

A complete ichthyosaur rostrum with 124 associated teeth was recently discovered in Laux-Montaux locality, department of Drôme, southeastern France. The associated belemnites and ammonites indicate a late ... [more ▼]

A complete ichthyosaur rostrum with 124 associated teeth was recently discovered in Laux-Montaux locality, department of Drôme, southeastern France. The associated belemnites and ammonites indicate a late Valanginian age (Neocomites peregrinus Zone, Olcostephanus nicklesi Subzone) for this fossil, which consequently represents the first diagnostic ichthyosaur ever reported from Valanginian strata. Despite its incompleteness, this specimen is perfectly consistent with Aegirosaurus leptospondylus WAGNER 1853 and is therefore referred to this rare taxon. This specimen thus greatly increases the temporal and geographic biozones of this taxon, which was previously restricted to the Tithonian (Upper Jurassic) lithographic limestones of Bavaria (southern Germany). Moreover, it indicates that Late Jurassic ichthyosaurs actually crossed the Jurassic-Cretaceous boundary with a much lighter diversity drop than previously supposed. Finally, tooth morphology and wear pattern suggest that Aegirosaurus belonged to the “Pierce II/ Generalist” feeding guild sensu Massare (1987; 1997), which was hitherto not represented in post-Liassic ichthyosaurs. [less ▲]

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See detailPrediction of knee loads using a lower extremity model based on the Klein Horsman data set
Schwartz, Cédric ULg; Lund, Morten; de Zee, Mark et al

Conference (2010, June)

In this paper, the in-vivo loads of the knee joint provided by an instrumented prosthesis (Fregly et al., 2010, Lin et al., 2010, Kim et al., 2009) are compared to the results obtained from an ... [more ▼]

In this paper, the in-vivo loads of the knee joint provided by an instrumented prosthesis (Fregly et al., 2010, Lin et al., 2010, Kim et al., 2009) are compared to the results obtained from an implementation of the Klein Horsman data set (2007) in the AnyBody Modeling System. The lateral and medial knee contact forces are estimated directly from the knee modeled as a modified revolute joint. As such, this study presents what can be achieved by estimating the knee contact forces from a simplified knee model. [less ▲]

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See detailLes enjeux financiers et budgétaires
Husson, Jean-François ULg

Conference (2010, May 31)

This presentation offers an overview of the public financing of religious and philosophical communities in Brussels-Capital Region, by both regional and local authorities. Amounts and challenges are ... [more ▼]

This presentation offers an overview of the public financing of religious and philosophical communities in Brussels-Capital Region, by both regional and local authorities. Amounts and challenges are presented. [less ▲]

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See detailMass spectrometry of G-quadruplexes
Gabelica, Valérie ULg

Conference (2010, May 31)

Detailed reference viewed: 73 (3 ULg)
See detailL'insuffisance rénale
Krzesinski, Jean-Marie ULg

Conference (2010, May 30)

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See detailProducing Objectivity Under Assumption of Values
Dewalque, Arnaud ULg

Conference (2010, May 29)

My intention is to put the problem of objectivity under examination from a very specific viewpoint, namely by focusing on the theory of judgement, which has been defended in the so-called South-Western ... [more ▼]

My intention is to put the problem of objectivity under examination from a very specific viewpoint, namely by focusing on the theory of judgement, which has been defended in the so-called South-Western School of neo-Kantianism. As one knows, the main representatives of this School are Wilhelm Windelband, Heinrich Rickert, Emil Lask and Bruno Bauch. Those authors are known, first and foremost, for having supported the view that valuation and assumption of values play a basic role in almost all the domains of our life, including our scientific life. This view forms the basis of their theory of knowledge or epistemology, which is prior to any methodological distinction between natural and cultural sciences (so it would be misleading to say that they confine that view to their foundation of cultural sciences and humanities). What, then, does such an ‘axiological’ theory of knowledge exactly mean? What does it imply for the construction of a theory of objectivity? And how is it related to Kant’s foundational program? [less ▲]

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See detailL'alimentation des enfants prématurés aujourd'hui
Senterre, Thibault ULg

Conference (2010, May 29)

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See detailVisual memory is conceptual and visual search is perceptual: how meaning and expertise may confirm this hypothesis?
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2010, May 28)

The purpose of this study was to evaluate how stimulus meaning and subject’s expertise differentially influence visual memory and visual search. In order to answer this question, 20 novices and 20 experts ... [more ▼]

The purpose of this study was to evaluate how stimulus meaning and subject’s expertise differentially influence visual memory and visual search. In order to answer this question, 20 novices and 20 experts (art historians) performed both long term visual memory (LTVM) and visual search tasks with abstract and non-abstract stimuli (paintings). In the LTVM task, subjects were presented 100 abstract and 100 non-abstract paintings and after each stimuli set presentation, they performed a 3-forced-choice recognition test. In the visual search task, subjects had to find targets as quickly as possible in abstract or non-abstract paintings. Our data showed experts performed better than novices in LTVM task for both abstract and non-abstract stimuli, whereas novices and experts had a similar performance in the visual search task. This result suggests expertise and thus previous knowledge about the stimulus increase memory performance but not visual search performance. Concerning the type of stimulus, performance in LTVM with non-abstract paintings was better than with abstract paintings while the contrary was observed in the visual search task. Stimulus meaning is thus a significant factor for visual memory (as also shown by Chatterjee et al., JOV, 2008) but not for visual search. In conclusion, our findings suggest stimulus meaning and subject’s expertise influence VLTM but not visual search. These results confirm that VLTM is rather conceptual and influenced by top-down processes (like meaning and expertise) while visual search is rather perceptive and influenced by bottom-up processes (as suggested by Konkle, JEP, in press). [less ▲]

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See detailPerson recognition: Effects of face and voice learning on access to semantic information from names.
Barsics, Catherine ULg; Marloye, Zoé

Conference (2010, May 28)

Several studies showed that it is more difficult to retrieve semantic information from recognized voices than from recognized faces. However, earlier studies that investigated the recall of biographical ... [more ▼]

Several studies showed that it is more difficult to retrieve semantic information from recognized voices than from recognized faces. However, earlier studies that investigated the recall of biographical information following person recognition used stimuli that were pre-experimentally familiar to the participants, such as famous people’s voices and faces. The present study was designed in order to allow a stricter control of frequency exposure with both types of stimuli (voices and faces). In the present study, subjects had to associate lexical (i.e., name) and semantic information (i.e., occupation) with faces or voices. When asked later to recall semantic information being cued by the person’s names, participants provided significantly more occupations for the targets that had been previously associated with faces than with voices. These results and their implications for current Interactive Activation and Competition person recognition models are discussed. Finally, the potential role of the relative distinctiveness of voices and faces is also considered. [less ▲]

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See detailIndéterminations de la photographie (II)
Havelange, Carl ULg

Conference (2010, May 28)

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See detailPrerequisites for the implementation of a new heroin-assisted centre
Demaret, Isabelle ULg

Conference (2010, May 28)

Prerequisites for the implementation of a new heroin-assisted centre Background: TADAM, a randomised controlled trial of heroin-assisted treatment, will begin in Liège, Belgium, in 2010. Heroin-assisted ... [more ▼]

Prerequisites for the implementation of a new heroin-assisted centre Background: TADAM, a randomised controlled trial of heroin-assisted treatment, will begin in Liège, Belgium, in 2010. Heroin-assisted treatment of treatment resistant heroin addicts has been successfully tested in six countries: Switzerland, The Netherlands, Spain, Germany, Canada and United-Kingdom. Each country used a randomised controlled trial to assess this new treatment. It has now a strong evidence-based foundation. However in the peer-reviewed articles, there is little information on the concrete conditions to fulfil before implementing this treatment. With the experience of the other countries and ours, we have listed those conditions. Methodology: We collected information concerning the randomised controlled trial. This included articles published in international peer-review journals, reports, visits to heroin-assisted treatment centres and information given by researchers who participated in those experiments. We will illustrate our presentation with the example of Liège. Results: Before all, a political agreement at the national level is mandatory. It is never guaranteed even if it was already given in the past. Methadone treatments must be available and the collaboration with the addiction network will be an advantage for the project. There must be a sufficiently high number of heroin addicted in the concerned area and they must be correctly informed about the heroin-assisted treatment. But even if it is the case, the inclusion of the foreseen number of patients can be more difficult than expected because it is problematic to assess the exact number of patients fulfilling the inclusion criteria and because not all the eligible participants will accept to enter this treatment. Conclusion: For reasons other than medical or scientific ones, implementing a new heroin-assisted centre is still a challenge. [less ▲]

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See detailPiles à combustible : situation actuelle et perspectives
Job, Nathalie ULg

Conference (2010, May 27)

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See detailEvidence for atypical categorical speech perception in Williams syndrome.
Majerus, Steve ULg; Poncelet, Martine ULg; Serniclaes, W. et al

Conference (2010, May 27)

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See detailAdvanced engine dynamics using MBS: Application to twin-cylinder boxer engines
Louvigny, Yannick ULg; Duysinx, Pierre ULg

Conference (2010, May 27)

Engine simulation is an important issue to design mechanical components and to reduce the development cost of new vehicles. Dynamic simulations of a twin-cylinder boxer engine are carried out with rigid ... [more ▼]

Engine simulation is an important issue to design mechanical components and to reduce the development cost of new vehicles. Dynamic simulations of a twin-cylinder boxer engine are carried out with rigid and flexible multibody models using the finite element approach. In a first step, simulations of the engine running at constant revolution speed (4000 rpm) are done taking advantages of the actual geometry of engine parts coming from CAD models. Forces due to the gas pressure are added in the simulation to calculate more precisely the load applied on each engine part. A mixed model is developed; pistons and connecting rods are considered as rigid bodies while the crankshaft is meshed with flexible brick elements. With this model, calculation of crankshaft stresses and displacements is possible. Then, simulations are made with engine speed variations to evaluate the effect of inertia. Due to the complex shape of the crankshaft, the CPU time and computer resources can be important. As simulations with a variable rotation speed have to be carried out on a larger number of engine revolutions, it becomes difficult to work with the fully detailed crankshaft geometry. So, simplified models (a tridimensional model with simplified geometry and a beam model) of the crankshaft are developed and compared. These models are first validated with different tests including results of constant speed flexible simulations. [less ▲]

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See detailEvaluation des capacités parentales
Degraux, Christine ULg

Conference (2010, May 27)

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See detailLes voies traditionnelles de production d’hydrogène
Léonard, Angélique ULg

Conference (2010, May 27)

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See detailMaternal transfer of trace metals to offspring in grey seals
Habran, Sarah ULg; Pomeroy, Paddy; Debier, Cathy et al

Conference (2010, May 25)

Marine mammals may display high heavy metal levels in their tissues, which raises the question of the importance of toxic metal transfer from mother to offspring. Some lactating female phocids fast during ... [more ▼]

Marine mammals may display high heavy metal levels in their tissues, which raises the question of the importance of toxic metal transfer from mother to offspring. Some lactating female phocids fast during the suckling period. This fasting period involves not only an important mobilization of energy reserves, but also mobilization of potentially associated contaminants. We studied maternal transfer of trace metals to offspring in the grey seal (Halichoerus grypus). Trace metal concentrations were measured in whole blood, milk and hair of mother-pup pairs in early and late lactation. Metal levels in blood decreased according to the following pattern: Fe > Zn > Se > Cu > Hg > Pb > Cr > V in mothers and pups. Cd and Ni were not detected and V, Cr and Pb levels were very low in maternal and pup blood. However, Ni and Pb levels were detected in the milk showing a transmammary transfer of these metals. Hg levels in blood and milk were higher than levels of previous metals and levels varied significantly throughout lactation. The increasing maternal levels over lactation were likely due to the remobilization of energy reserves during fasting and milk production in mothers causing a Hg release in blood. All metals were detected in hair and lanugo according to the following pattern: Fe > Zn > Hg > Cu > Se > Ni > V > Pb > Cd > Cr in mothers and Zn > Fe > Hg > Se > Cu > Pb > Ni > V > Cr > Cd in pups. Pb levels were relatively high in comparison with other phocid species. Only Hg showed a significant relationship between hair/lanugo and blood levels. This study highlights (i) a transplacental and transmammary transfer of metals in grey seals, and shows that (ii) physiological processes such as lactation and/or fasting can modify trace metal levels in the blood of mothers and pups. [less ▲]

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See detailGlucose-responsive layer-by-layer microcapsules: a potential route to self-regulated insulin delivery
Alaimo, David ULg; Detrembleur, Christophe ULg; Auzély-Velty, Rachel et al

Conference (2010, May 25)

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See detailLa GRH, levier de changement?
Pichault, François ULg

Conference (2010, May 22)

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See detailNouveaux agents anti-inflammatoires en série N-(4-pyridyl)alcanesulfonamide
Renard, Jean-François ULg; Lecomte, Frédéric ULg; de Leval, Xavier et al

Conference (2010, May 21)

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See detailPolitiques, stratégies et pratiques en cours à la FAPSE de l’ULg et dans les Hautes Écoles de la Communauté française de Belgique
Denis, Brigitte ULg

Conference (2010, May 20)

The author presents different uses of ICT in courses and training curriculums at the Faculty of Psychology and Educational Sciences of the University of Liège. She also deals with some considerations on ... [more ▼]

The author presents different uses of ICT in courses and training curriculums at the Faculty of Psychology and Educational Sciences of the University of Liège. She also deals with some considerations on initial and continuous training in ICTE uses in High Schools of the French Community of Belgium. The presentation ends on different elements to be considered about policies, strategies and practices (e.g. Insertion of courses in the official initial training curriculums, teachers' certification in ICT and ICTE in Higher Education, ICT mastery...ergonomy and acceptability of tools, isomorphism principle, evaluation, creation and animation of networks and communities of practice to sustain contiunous traing). [less ▲]

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See detailHow King Leopold II used Emile de Laveleye’s intellectual network for the benefit of his African project…
Vandersmissen, Jan ULg

Conference (2010, May 20)

The “Belle Epoque” saw the revival of the colonial idea in new forms. A second European colonization wave washed over Africa. King Leopold II unfolded his activities in Congo from 1876 onwards. There, his ... [more ▼]

The “Belle Epoque” saw the revival of the colonial idea in new forms. A second European colonization wave washed over Africa. King Leopold II unfolded his activities in Congo from 1876 onwards. There, his efforts to develop a so-called “philanthropic” enterprise soon evolved in a process of state formation, overshadowed by intrigues and tensions that were a consequence of colonial competition between the western powers. Only a decade later, at the Berlin Conference of 1885, a definite arrangement was adopted. Everywhere in Europe, a disputed transition was made from liberal to more conservative ways of government. Of course this tension field also dominated intellectual life. There was an intense debate between partisans of colonialism and supporters of worldwide free trade. For the development of his colonial doctrine Leopold II had been inspired by intellectuals that supported economic expansionism. Most of them were active in the field of economic geography. But the King also searched for support in other academic circles and mobilized one of Europe’s brightest minds to join him in his quest for the most adequate economic, social and political model of a future state in the heart of Africa. In his books, articles and pamphlets, the liberal minded political economist Emile de Laveleye (1822-1892) – an opinion maker of European renown – showed himself an unshakable opponent of colonization and imperialism. However, in the period 1875-1885 – a decade so crucial for Congo – a surprising intellectual rapprochement between de Laveleye and Leopold II was established. For a certain time, this competent man of science advised the King, for example at the International Geographical Conference in Brussels, putting into royal service an intellectual network of European range. This paper investigates how, in the complex and constantly evolving public discussion about Congo, two apparently opposing minds attracted each other. Analyzing de Laveleye’s publications and correspondence we focus on his important pleas for a “neutral and international formula” that would place Leopold II in a conflicting situation with Portugal and France, countries that claimed Congo’s estuary for their own benefit. De Laveleye believed that Leopold was sincere about his civilizing mission and crusade against slavery. This study shows how, in the years preceding the Berlin Conference, de Laveleye got actively involved in a carefully orchestrated European media campaign in support of Leopold’s initiative. It was there that his intellectual circle became extremely useful and was fully implicated. His contacts in the world of law, especially among experts of international law, contributed to the important discussions about Congo’s juridical status. De Laveleye’s colleague Sir Travers Twiss, one of the most reputed jurists of that time, as well as the influential Institut de Droit international, of which de Laveleye had been one of the founders, entered the debate zone and took positions that were favorable for Leopold’s project. With this new approach, our paper also aims to give insight in the way Leopold II transformed his own reasoning into a more authoritative set of practical standards that were shared by an intellectual elite. [less ▲]

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See detailL’orgueil de Foucault. Ontologie, expérience et critique
Bolmain, Thomas ULg

Conference (2010, May 20)

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See detailPerte et ressources dans les nouvelles familles: le cas des familles recomposées
D'Amore, Salvatore ULg; Gresse, Karin; Pauss, Véronique

Conference (2010, May 19)

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See detailles stéréotypes sexués à l'adolescence et les enjeux scolaires
Gavray, Claire ULg

Conference (2010, May 19)

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See detailConclusions : à quelles conditions pouvons-nous travailler ensemble?
Dozo, Björn-Olav ULg; Clavert, Frédéric

Conference (2010, May 19)

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See detailComputational study of the error distribution in right-censored and selection-biased regression models
Laurent, Géraldine ULg; Heuchenne, Cédric ULg

Conference (2010, May 18)

Consider the regression model Y = m(X) + σ(X) Ɛ where m(X) =E [Y|X] and σ²(X) = Var [Y|X] are unknown smooth functions and the error Ɛ, with unknown distribution, is independent of X. The pair (X,Y) is ... [more ▼]

Consider the regression model Y = m(X) + σ(X) Ɛ where m(X) =E [Y|X] and σ²(X) = Var [Y|X] are unknown smooth functions and the error Ɛ, with unknown distribution, is independent of X. The pair (X,Y) is subject to generalized selection bias and the response to right censoring. We construct a new estimator for the cumulative distribution function of the error Ɛ, and develop a bootstrap technique to select the smoothing parameter involved in the procedure. The estimator is studied via extended simulations and applied to real unemployment data. [less ▲]

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See detailThe occurrence of multicolored ladybird, Harmonia axyridis Pallas, a biological control agent in agroecosystems in Wallonia
Vandereycken, Axel ULg; Durieux, Delphine ULg; Haubruge, Eric ULg et al

Conference (2010, May 18)

The Asian ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was imported in 1997 in Belgium to control aphid populations in greenhouses. It took only few years to the insect to get adapted ... [more ▼]

The Asian ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), was imported in 1997 in Belgium to control aphid populations in greenhouses. It took only few years to the insect to get adapted to temperate climate conditions and to spread out all over Europe. Now, H. axyridis is one of the coccinellid with the biggest size in Belgium, causing damages to the ecosystems through e.g. intraguild predation (IGP). We are still lacking information about the consequences of the introduction of this superpredator in our agro-ecosystems. This work focuses on the potential impacts of H. axyridis on the entomofauna associated with several crops (potatos, corn, wheat, broad bean). We evaluated in 2009 the occurrence as well as the interactions between aphids and their natural enemies (hoverflies, coccinellids and lacewings) in several agro-ecosystem sites in northern Wallonia. After one year of field observations, were found thirteen coccinellid species, most of the catched individuals being H. axyridis with 64% of the coccinellids, Propylea 14-punctata, 15%, or Coccinella 7-punctata, 14%. This invasive ladybird dominates the group of coccinellids generally in all crops in north Wallonia. The results with the sticky traps show that the maximum occurrence of H. axyridis in crops is observed in chicory, sugar beet and potatoes. The relationship aphid-ladybird in wheat for example, brings out that increase of density of Asian ladybird in mid-July follow the increase of aphids (Sitobion avenae, Sitobion fragariae, Metopolophium dirhodum, Aphis fabae) in the end of June. We also observe that, in most agro-ecosystems, hoverflies and lacewings are the dominant aphid natural enemies. In all crops investigate, the multicolored ladybird occurs with 5% of the aphidophagous after the Chrysopidae, 12% and the Syrphidae, 76%. In 2009, the agro-ecosystems with the most aphidophagous species are carrot and broad bean and these habitats are dominated by hoverflies. [less ▲]

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See detailStructuring effects of different lecithins on palm oil-based blends
Danthine, Sabine ULg; Delacharlerie, Sophie ULg; Flöter, Eckhard

Conference (2010, May 18)

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See detailThe partial proportional odds model in the analysis of
Donneau, Anne-Françoise ULg

Conference (2010, May 18)

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See detailThe modified Reyment's multivariate coefficient of variation
Zhang, Lixin ULg

Conference (2010, May 18)

Detailed reference viewed: 38 (9 ULg)
See detailA l’interface de l’humain et du non-humain : apprendre à être affecté.
Strivay, Lucienne ULg

Conference (2010, May 18)

Detailed reference viewed: 52 (13 ULg)
See detailJupiter's and Saturn's auroras as observed by the Hubble Space Telescope
Nichols, J. D.; Grodent, Denis ULg

Conference (2010, May 17)

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See detailAccompagner une réforme vers des programmes visant le développement de compétences – difficultés et leviers –
Poumay, Marianne ULg; Tardif, Jacques

Conference (2010, May 17)

En 2007, au sein de l’Université de Liège, l’IFRES a lancé un programme interne de financement et d’accompagnement de projets facultaires. Dans les projets sélectionnés, les enseignants s’engageaient à ... [more ▼]

En 2007, au sein de l’Université de Liège, l’IFRES a lancé un programme interne de financement et d’accompagnement de projets facultaires. Dans les projets sélectionnés, les enseignants s’engageaient à progresser concrètement dans l’opérationnalisation de formations orientées vers le développement de compétences chez leurs étudiants. A travers ce programme « compétences », l’objectif de l’IFRES était d’amorcer des réformes qui visent l’amélioration de l’apprentissage des étudiants. Suite à la nécessaire description de l’initiative et de quelques résultats concrets, le présent article mentionne brièvement les difficultés d’ordre institutionnel ou organisationnel et s’attarde surtout à déterminer et illustrer des problèmes conceptuels qui se posent dans ce type de réforme. Il mentionne certains freins et facteurs facilitateurs, soulignant entre autres l’intérêt d’un accompagnement semi-collectif par un consultant externe (en l’occurrence Jacques Tardif) et d’une large communication sur les avancées des projets en cours. [less ▲]

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See detail3D Modelling of the Black Sea northwestern Shelf Ecosystem
Capet, Arthur ULg; Grégoire, Marilaure ULg

Conference (2010, May 14)

Some validation procedures are presented concerning the physicis and the biology, as well as the decomposition of the oxygen cycle in its different components. The role of the Sevastopol eddy of retaining ... [more ▼]

Some validation procedures are presented concerning the physicis and the biology, as well as the decomposition of the oxygen cycle in its different components. The role of the Sevastopol eddy of retaining POM in the Crimea peninsula causing intense bacterial oxygen consumption is evidenced. [less ▲]

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See detailAdolescence et délinquances : quand la puberté s’en mêle …De l’intérêt d’une approche biopsychosociale de la délinquance adolescentaire
Glowacz, Fabienne ULg

Conference (2010, May 13)

De nombreuses recherches (Kaltiala-Heino et al., 2003 ; Parent et al., 2003 ; Beaver § Wright, 2005 ; Haynie § Piquero 2006 ; Lynne et al., 2007,..) ont établi ces dernières années un lien entre le ... [more ▼]

De nombreuses recherches (Kaltiala-Heino et al., 2003 ; Parent et al., 2003 ; Beaver § Wright, 2005 ; Haynie § Piquero 2006 ; Lynne et al., 2007,..) ont établi ces dernières années un lien entre le développement pubertaire et l’engagement à l’adolescence dans des comportements délictueux, usage de drogue, conduites sexuelles et autres comportements exploratoires et déviants. Felson et Haynie (2002) affirment que le développement pubertaire a des effets sur différents types de délinquance comparables à d’autres puissants prédicteurs de la délinquance. Bien que l’étude de Williams et Dunlop (1999) constate que les garçons à maturité précoce et tardive présentent des taux plus élevés de délinquance que leurs pairs à maturation normale, des recherches plus récentes (Ge et al., 2002 ; Beaver § Wright, 2005 ; Michaud et al., 2006 ; Lynne et al., 2007…) soutiennent l’hypothèse de la précocité pubertaire en tant que facteur de risque : les garçons à puberté précoce ont un plus haut niveau d’engagement dans des comportements délinquants et agressifs, alors que les garçons à puberté tardive s’engagent dans moins de délinquances (de type crime, violence, atteintes aux biens, usage de drogue). La délinquance sexuelle juvénile, au croisement de la délinquance et de la sexualité, incite à un questionnement sur les effets de la puberté au niveau des conduites sexuelles déviantes. Notre recherche « Adolescence, délinquances et processus pubertaire » portant sur un échantillon de 316 adolescents âgés de 13 à 18 ans, a notamment évalué l’incidence du timing pubertaire au niveau de l’adoption de conduites délinquantes sexuelles et non sexuelles. Nos résultats confirment la pertinence de la prise en compte du développement pubertaire dans les processus de socialisation et d’engagement dans la délinquance générale et/ou sexuelle à l’adolescence. [less ▲]

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See detailA paleolimnological study of Lake Kivu (East Africa)
Knops, Sébastien; Darchambeau, François ULg; Verleyen, Elie et al

Conference (2010, May 13)

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See detailvandaliser à l'adolescence
Gavray, Claire ULg; vettenburg, Nicole

Conference (2010, May 13)

The personal factor which explain vandalism amongst adolescents differ according to gender group. In the male group, we find an important impact of the valuation of violence and of the feeling of social ... [more ▼]

The personal factor which explain vandalism amongst adolescents differ according to gender group. In the male group, we find an important impact of the valuation of violence and of the feeling of social and statutory victimisation. In the female group, we find track of early victimisation in the family and the other spheres. [less ▲]

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See detailQualité de vie en oncologie pédiatrique : analyse comparative d’enfants en et hors traitements au moyen d’un outil modulaire
Missotten, Pierre ULg; Dupuis, Gilles; Hoyoux, Claire et al

Conference (2010, May 12)

Detailed reference viewed: 26 (1 ULg)